Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
197e01b6 | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, |
777ea8f1 DJ |
4 | 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006 |
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" |
c906108c | 54 | |
c906108c SS |
55 | #include <sys/types.h> |
56 | #include <fcntl.h> | |
57 | #include "gdb_string.h" | |
58 | #include "gdb_stat.h" | |
59 | #include <ctype.h> | |
60 | #include <time.h> | |
2b71414d | 61 | #include <sys/time.h> |
c906108c SS |
62 | |
63 | #ifndef O_BINARY | |
64 | #define O_BINARY 0 | |
65 | #endif | |
66 | ||
9a4105ab AC |
67 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
68 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
69 | unsigned long section_sent, |
70 | unsigned long section_size, | |
71 | unsigned long total_sent, | |
c2d11a7d | 72 | unsigned long total_size); |
769d7dc4 AC |
73 | void (*deprecated_pre_add_symbol_hook) (const char *); |
74 | void (*deprecated_post_add_symbol_hook) (void); | |
9a4105ab | 75 | void (*deprecated_target_new_objfile_hook) (struct objfile *); |
c906108c | 76 | |
74b7792f AC |
77 | static void clear_symtab_users_cleanup (void *ignore); |
78 | ||
c906108c | 79 | /* Global variables owned by this file */ |
c5aa993b | 80 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 81 | |
c906108c SS |
82 | /* External variables and functions referenced. */ |
83 | ||
a14ed312 | 84 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
85 | |
86 | /* Functions this file defines */ | |
87 | ||
88 | #if 0 | |
a14ed312 KB |
89 | static int simple_read_overlay_region_table (void); |
90 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
91 | #endif |
92 | ||
a14ed312 | 93 | static void set_initial_language (void); |
c906108c | 94 | |
a14ed312 | 95 | static void load_command (char *, int); |
c906108c | 96 | |
d7db6da9 FN |
97 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
98 | ||
a14ed312 | 99 | static void add_symbol_file_command (char *, int); |
c906108c | 100 | |
a14ed312 | 101 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 102 | |
5b5d99cf JB |
103 | static void reread_separate_symbols (struct objfile *objfile); |
104 | ||
a14ed312 | 105 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 106 | |
a14ed312 | 107 | bfd *symfile_bfd_open (char *); |
c906108c | 108 | |
0e931cf0 JB |
109 | int get_section_index (struct objfile *, char *); |
110 | ||
a14ed312 | 111 | static void find_sym_fns (struct objfile *); |
c906108c | 112 | |
a14ed312 | 113 | static void decrement_reading_symtab (void *); |
c906108c | 114 | |
a14ed312 | 115 | static void overlay_invalidate_all (void); |
c906108c | 116 | |
a14ed312 | 117 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 118 | |
a14ed312 | 119 | void list_overlays_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | void map_overlay_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | void unmap_overlay_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void overlay_auto_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static void overlay_manual_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | static void overlay_off_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void overlay_load_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void overlay_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | static void simple_free_overlay_table (void); |
c906108c | 136 | |
a14ed312 | 137 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 138 | |
a14ed312 | 139 | static int simple_read_overlay_table (void); |
c906108c | 140 | |
a14ed312 | 141 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 142 | |
a14ed312 | 143 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 144 | |
a14ed312 | 145 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 146 | |
5b5d99cf JB |
147 | static char *find_separate_debug_file (struct objfile *objfile); |
148 | ||
a14ed312 | 149 | static void init_filename_language_table (void); |
392a587b | 150 | |
a14ed312 | 151 | void _initialize_symfile (void); |
c906108c SS |
152 | |
153 | /* List of all available sym_fns. On gdb startup, each object file reader | |
154 | calls add_symtab_fns() to register information on each format it is | |
155 | prepared to read. */ | |
156 | ||
157 | static struct sym_fns *symtab_fns = NULL; | |
158 | ||
159 | /* Flag for whether user will be reloading symbols multiple times. | |
160 | Defaults to ON for VxWorks, otherwise OFF. */ | |
161 | ||
162 | #ifdef SYMBOL_RELOADING_DEFAULT | |
163 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
164 | #else | |
165 | int symbol_reloading = 0; | |
166 | #endif | |
920d2a44 AC |
167 | static void |
168 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
169 | struct cmd_list_element *c, const char *value) | |
170 | { | |
171 | fprintf_filtered (file, _("\ | |
172 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
173 | value); | |
174 | } | |
175 | ||
c906108c | 176 | |
b7209cb4 FF |
177 | /* If non-zero, shared library symbols will be added automatically |
178 | when the inferior is created, new libraries are loaded, or when | |
179 | attaching to the inferior. This is almost always what users will | |
180 | want to have happen; but for very large programs, the startup time | |
181 | will be excessive, and so if this is a problem, the user can clear | |
182 | this flag and then add the shared library symbols as needed. Note | |
183 | that there is a potential for confusion, since if the shared | |
c906108c | 184 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 185 | report all the functions that are actually present. */ |
c906108c SS |
186 | |
187 | int auto_solib_add = 1; | |
b7209cb4 FF |
188 | |
189 | /* For systems that support it, a threshold size in megabytes. If | |
190 | automatically adding a new library's symbol table to those already | |
191 | known to the debugger would cause the total shared library symbol | |
192 | size to exceed this threshhold, then the shlib's symbols are not | |
193 | added. The threshold is ignored if the user explicitly asks for a | |
194 | shlib to be added, such as when using the "sharedlibrary" | |
195 | command. */ | |
196 | ||
197 | int auto_solib_limit; | |
c906108c | 198 | \f |
c5aa993b | 199 | |
0fe19209 DC |
200 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
201 | for the comparison. */ | |
c906108c SS |
202 | |
203 | static int | |
0cd64fe2 | 204 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 205 | { |
0fe19209 DC |
206 | struct partial_symbol *const *s1 = s1p; |
207 | struct partial_symbol *const *s2 = s2p; | |
208 | ||
4725b721 PH |
209 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
210 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
211 | } |
212 | ||
213 | void | |
fba45db2 | 214 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
215 | { |
216 | /* Sort the global list; don't sort the static list */ | |
217 | ||
c5aa993b JM |
218 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
219 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
220 | compare_psymbols); |
221 | } | |
222 | ||
c906108c SS |
223 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
224 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
225 | Note that the string at PTR does not have to be null terminated, I.E. it | |
226 | may be part of a larger string and we are only saving a substring. */ | |
227 | ||
228 | char * | |
63ca651f | 229 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 230 | { |
52f0bd74 | 231 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
232 | /* Open-coded memcpy--saves function call time. These strings are usually |
233 | short. FIXME: Is this really still true with a compiler that can | |
234 | inline memcpy? */ | |
235 | { | |
aa1ee363 AC |
236 | const char *p1 = ptr; |
237 | char *p2 = p; | |
63ca651f | 238 | const char *end = ptr + size; |
c906108c SS |
239 | while (p1 != end) |
240 | *p2++ = *p1++; | |
241 | } | |
242 | p[size] = 0; | |
243 | return p; | |
244 | } | |
245 | ||
246 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
247 | in the obstack pointed to by OBSTACKP. */ | |
248 | ||
249 | char * | |
fba45db2 KB |
250 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
251 | const char *s3) | |
c906108c | 252 | { |
52f0bd74 AC |
253 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
254 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
255 | strcpy (val, s1); |
256 | strcat (val, s2); | |
257 | strcat (val, s3); | |
258 | return val; | |
259 | } | |
260 | ||
261 | /* True if we are nested inside psymtab_to_symtab. */ | |
262 | ||
263 | int currently_reading_symtab = 0; | |
264 | ||
265 | static void | |
fba45db2 | 266 | decrement_reading_symtab (void *dummy) |
c906108c SS |
267 | { |
268 | currently_reading_symtab--; | |
269 | } | |
270 | ||
271 | /* Get the symbol table that corresponds to a partial_symtab. | |
272 | This is fast after the first time you do it. In fact, there | |
273 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
274 | case inline. */ | |
275 | ||
276 | struct symtab * | |
aa1ee363 | 277 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
278 | { |
279 | /* If it's been looked up before, return it. */ | |
280 | if (pst->symtab) | |
281 | return pst->symtab; | |
282 | ||
283 | /* If it has not yet been read in, read it. */ | |
284 | if (!pst->readin) | |
c5aa993b | 285 | { |
c906108c SS |
286 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
287 | currently_reading_symtab++; | |
288 | (*pst->read_symtab) (pst); | |
289 | do_cleanups (back_to); | |
290 | } | |
291 | ||
292 | return pst->symtab; | |
293 | } | |
294 | ||
5417f6dc RM |
295 | /* Remember the lowest-addressed loadable section we've seen. |
296 | This function is called via bfd_map_over_sections. | |
c906108c SS |
297 | |
298 | In case of equal vmas, the section with the largest size becomes the | |
299 | lowest-addressed loadable section. | |
300 | ||
301 | If the vmas and sizes are equal, the last section is considered the | |
302 | lowest-addressed loadable section. */ | |
303 | ||
304 | void | |
4efb68b1 | 305 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 306 | { |
c5aa993b | 307 | asection **lowest = (asection **) obj; |
c906108c SS |
308 | |
309 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
310 | return; | |
311 | if (!*lowest) | |
312 | *lowest = sect; /* First loadable section */ | |
313 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
314 | *lowest = sect; /* A lower loadable section */ | |
315 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
316 | && (bfd_section_size (abfd, (*lowest)) | |
317 | <= bfd_section_size (abfd, sect))) | |
318 | *lowest = sect; | |
319 | } | |
320 | ||
a39a16c4 MM |
321 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
322 | ||
323 | struct section_addr_info * | |
324 | alloc_section_addr_info (size_t num_sections) | |
325 | { | |
326 | struct section_addr_info *sap; | |
327 | size_t size; | |
328 | ||
329 | size = (sizeof (struct section_addr_info) | |
330 | + sizeof (struct other_sections) * (num_sections - 1)); | |
331 | sap = (struct section_addr_info *) xmalloc (size); | |
332 | memset (sap, 0, size); | |
333 | sap->num_sections = num_sections; | |
334 | ||
335 | return sap; | |
336 | } | |
62557bbc | 337 | |
7b90c3f9 JB |
338 | |
339 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
340 | any, are also freshly allocated copies of those in ADDRS. */ | |
341 | struct section_addr_info * | |
342 | copy_section_addr_info (struct section_addr_info *addrs) | |
343 | { | |
344 | struct section_addr_info *copy | |
345 | = alloc_section_addr_info (addrs->num_sections); | |
346 | int i; | |
347 | ||
348 | copy->num_sections = addrs->num_sections; | |
349 | for (i = 0; i < addrs->num_sections; i++) | |
350 | { | |
351 | copy->other[i].addr = addrs->other[i].addr; | |
352 | if (addrs->other[i].name) | |
353 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
354 | else | |
355 | copy->other[i].name = NULL; | |
356 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
357 | } | |
358 | ||
359 | return copy; | |
360 | } | |
361 | ||
362 | ||
363 | ||
62557bbc KB |
364 | /* Build (allocate and populate) a section_addr_info struct from |
365 | an existing section table. */ | |
366 | ||
367 | extern struct section_addr_info * | |
368 | build_section_addr_info_from_section_table (const struct section_table *start, | |
369 | const struct section_table *end) | |
370 | { | |
371 | struct section_addr_info *sap; | |
372 | const struct section_table *stp; | |
373 | int oidx; | |
374 | ||
a39a16c4 | 375 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
376 | |
377 | for (stp = start, oidx = 0; stp != end; stp++) | |
378 | { | |
5417f6dc | 379 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 380 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 381 | && oidx < end - start) |
62557bbc KB |
382 | { |
383 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 384 | sap->other[oidx].name |
fbd35540 | 385 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
386 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
387 | oidx++; | |
388 | } | |
389 | } | |
390 | ||
391 | return sap; | |
392 | } | |
393 | ||
394 | ||
395 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
396 | ||
397 | extern void | |
398 | free_section_addr_info (struct section_addr_info *sap) | |
399 | { | |
400 | int idx; | |
401 | ||
a39a16c4 | 402 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 403 | if (sap->other[idx].name) |
b8c9b27d KB |
404 | xfree (sap->other[idx].name); |
405 | xfree (sap); | |
62557bbc KB |
406 | } |
407 | ||
408 | ||
e8289572 JB |
409 | /* Initialize OBJFILE's sect_index_* members. */ |
410 | static void | |
411 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 412 | { |
e8289572 | 413 | asection *sect; |
c906108c | 414 | int i; |
5417f6dc | 415 | |
b8fbeb18 | 416 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 417 | if (sect) |
b8fbeb18 EZ |
418 | objfile->sect_index_text = sect->index; |
419 | ||
420 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 421 | if (sect) |
b8fbeb18 EZ |
422 | objfile->sect_index_data = sect->index; |
423 | ||
424 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 425 | if (sect) |
b8fbeb18 EZ |
426 | objfile->sect_index_bss = sect->index; |
427 | ||
428 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 429 | if (sect) |
b8fbeb18 EZ |
430 | objfile->sect_index_rodata = sect->index; |
431 | ||
bbcd32ad FF |
432 | /* This is where things get really weird... We MUST have valid |
433 | indices for the various sect_index_* members or gdb will abort. | |
434 | So if for example, there is no ".text" section, we have to | |
435 | accomodate that. Except when explicitly adding symbol files at | |
436 | some address, section_offsets contains nothing but zeros, so it | |
437 | doesn't matter which slot in section_offsets the individual | |
438 | sect_index_* members index into. So if they are all zero, it is | |
439 | safe to just point all the currently uninitialized indices to the | |
440 | first slot. */ | |
441 | ||
442 | for (i = 0; i < objfile->num_sections; i++) | |
443 | { | |
444 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
445 | { | |
446 | break; | |
447 | } | |
448 | } | |
449 | if (i == objfile->num_sections) | |
450 | { | |
451 | if (objfile->sect_index_text == -1) | |
452 | objfile->sect_index_text = 0; | |
453 | if (objfile->sect_index_data == -1) | |
454 | objfile->sect_index_data = 0; | |
455 | if (objfile->sect_index_bss == -1) | |
456 | objfile->sect_index_bss = 0; | |
457 | if (objfile->sect_index_rodata == -1) | |
458 | objfile->sect_index_rodata = 0; | |
459 | } | |
b8fbeb18 | 460 | } |
c906108c | 461 | |
c1bd25fd DJ |
462 | /* The arguments to place_section. */ |
463 | ||
464 | struct place_section_arg | |
465 | { | |
466 | struct section_offsets *offsets; | |
467 | CORE_ADDR lowest; | |
468 | }; | |
469 | ||
470 | /* Find a unique offset to use for loadable section SECT if | |
471 | the user did not provide an offset. */ | |
472 | ||
473 | void | |
474 | place_section (bfd *abfd, asection *sect, void *obj) | |
475 | { | |
476 | struct place_section_arg *arg = obj; | |
477 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
478 | int done; | |
3bd72c6f | 479 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd DJ |
480 | |
481 | /* We are only interested in loadable sections. */ | |
482 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
483 | return; | |
484 | ||
485 | /* If the user specified an offset, honor it. */ | |
486 | if (offsets[sect->index] != 0) | |
487 | return; | |
488 | ||
489 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
490 | start_addr = (arg->lowest + align - 1) & -align; |
491 | ||
c1bd25fd DJ |
492 | do { |
493 | asection *cur_sec; | |
c1bd25fd | 494 | |
c1bd25fd DJ |
495 | done = 1; |
496 | ||
497 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
498 | { | |
499 | int indx = cur_sec->index; | |
500 | CORE_ADDR cur_offset; | |
501 | ||
502 | /* We don't need to compare against ourself. */ | |
503 | if (cur_sec == sect) | |
504 | continue; | |
505 | ||
506 | /* We can only conflict with loadable sections. */ | |
507 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_LOAD) == 0) | |
508 | continue; | |
509 | ||
510 | /* We do not expect this to happen; just ignore sections in a | |
511 | relocatable file with an assigned VMA. */ | |
512 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
513 | continue; | |
514 | ||
515 | /* If the section offset is 0, either the section has not been placed | |
516 | yet, or it was the lowest section placed (in which case LOWEST | |
517 | will be past its end). */ | |
518 | if (offsets[indx] == 0) | |
519 | continue; | |
520 | ||
521 | /* If this section would overlap us, then we must move up. */ | |
522 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
523 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
524 | { | |
525 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
526 | start_addr = (start_addr + align - 1) & -align; | |
527 | done = 0; | |
3bd72c6f | 528 | break; |
c1bd25fd DJ |
529 | } |
530 | ||
531 | /* Otherwise, we appear to be OK. So far. */ | |
532 | } | |
533 | } | |
534 | while (!done); | |
535 | ||
536 | offsets[sect->index] = start_addr; | |
537 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
538 | ||
539 | exec_set_section_address (bfd_get_filename (abfd), sect->index, start_addr); | |
540 | } | |
e8289572 JB |
541 | |
542 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 543 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
544 | version of the sym_fns.sym_offsets function for symbol readers that |
545 | don't need to do anything special. It allocates a section_offsets table | |
546 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
547 | ||
548 | void | |
549 | default_symfile_offsets (struct objfile *objfile, | |
550 | struct section_addr_info *addrs) | |
551 | { | |
552 | int i; | |
553 | ||
a39a16c4 | 554 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 555 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 556 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 557 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 558 | memset (objfile->section_offsets, 0, |
a39a16c4 | 559 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
560 | |
561 | /* Now calculate offsets for section that were specified by the | |
562 | caller. */ | |
a39a16c4 | 563 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
564 | { |
565 | struct other_sections *osp ; | |
566 | ||
567 | osp = &addrs->other[i] ; | |
568 | if (osp->addr == 0) | |
569 | continue; | |
570 | ||
571 | /* Record all sections in offsets */ | |
572 | /* The section_offsets in the objfile are here filled in using | |
573 | the BFD index. */ | |
574 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
575 | } | |
576 | ||
c1bd25fd DJ |
577 | /* For relocatable files, all loadable sections will start at zero. |
578 | The zero is meaningless, so try to pick arbitrary addresses such | |
579 | that no loadable sections overlap. This algorithm is quadratic, | |
580 | but the number of sections in a single object file is generally | |
581 | small. */ | |
582 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
583 | { | |
584 | struct place_section_arg arg; | |
585 | arg.offsets = objfile->section_offsets; | |
586 | arg.lowest = 0; | |
587 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
588 | } | |
589 | ||
e8289572 JB |
590 | /* Remember the bfd indexes for the .text, .data, .bss and |
591 | .rodata sections. */ | |
592 | init_objfile_sect_indices (objfile); | |
593 | } | |
594 | ||
595 | ||
c906108c SS |
596 | /* Process a symbol file, as either the main file or as a dynamically |
597 | loaded file. | |
598 | ||
96baa820 JM |
599 | OBJFILE is where the symbols are to be read from. |
600 | ||
7e8580c1 JB |
601 | ADDRS is the list of section load addresses. If the user has given |
602 | an 'add-symbol-file' command, then this is the list of offsets and | |
603 | addresses he or she provided as arguments to the command; or, if | |
604 | we're handling a shared library, these are the actual addresses the | |
605 | sections are loaded at, according to the inferior's dynamic linker | |
606 | (as gleaned by GDB's shared library code). We convert each address | |
607 | into an offset from the section VMA's as it appears in the object | |
608 | file, and then call the file's sym_offsets function to convert this | |
609 | into a format-specific offset table --- a `struct section_offsets'. | |
610 | If ADDRS is non-zero, OFFSETS must be zero. | |
611 | ||
612 | OFFSETS is a table of section offsets already in the right | |
613 | format-specific representation. NUM_OFFSETS is the number of | |
614 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
615 | assume this is the proper table the call to sym_offsets described | |
616 | above would produce. Instead of calling sym_offsets, we just dump | |
617 | it right into objfile->section_offsets. (When we're re-reading | |
618 | symbols from an objfile, we don't have the original load address | |
619 | list any more; all we have is the section offset table.) If | |
620 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
621 | |
622 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
623 | it's an extra symbol file such as dynamically loaded code. | |
624 | ||
625 | VERBO is nonzero if the caller has printed a verbose message about | |
626 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
627 | |
628 | void | |
7e8580c1 JB |
629 | syms_from_objfile (struct objfile *objfile, |
630 | struct section_addr_info *addrs, | |
631 | struct section_offsets *offsets, | |
632 | int num_offsets, | |
633 | int mainline, | |
634 | int verbo) | |
c906108c | 635 | { |
a39a16c4 | 636 | struct section_addr_info *local_addr = NULL; |
c906108c | 637 | struct cleanup *old_chain; |
2acceee2 | 638 | |
7e8580c1 | 639 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 640 | |
c906108c SS |
641 | init_entry_point_info (objfile); |
642 | find_sym_fns (objfile); | |
643 | ||
75245b24 MS |
644 | if (objfile->sf == NULL) |
645 | return; /* No symbols. */ | |
646 | ||
c906108c SS |
647 | /* Make sure that partially constructed symbol tables will be cleaned up |
648 | if an error occurs during symbol reading. */ | |
74b7792f | 649 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 650 | |
a39a16c4 MM |
651 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
652 | list. We now establish the convention that an addr of zero means | |
653 | no load address was specified. */ | |
654 | if (! addrs && ! offsets) | |
655 | { | |
5417f6dc | 656 | local_addr |
a39a16c4 MM |
657 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
658 | make_cleanup (xfree, local_addr); | |
659 | addrs = local_addr; | |
660 | } | |
661 | ||
662 | /* Now either addrs or offsets is non-zero. */ | |
663 | ||
c5aa993b | 664 | if (mainline) |
c906108c SS |
665 | { |
666 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 667 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 668 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
669 | |
670 | /* Since no error yet, throw away the old symbol table. */ | |
671 | ||
672 | if (symfile_objfile != NULL) | |
673 | { | |
674 | free_objfile (symfile_objfile); | |
675 | symfile_objfile = NULL; | |
676 | } | |
677 | ||
678 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
679 | If the user wants to get rid of them, they should do "symbol-file" |
680 | without arguments first. Not sure this is the best behavior | |
681 | (PR 2207). */ | |
c906108c | 682 | |
c5aa993b | 683 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
684 | } |
685 | ||
686 | /* Convert addr into an offset rather than an absolute address. | |
687 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 688 | and assume that <addr> is where that got loaded. |
c906108c | 689 | |
53a5351d JM |
690 | We no longer warn if the lowest section is not a text segment (as |
691 | happens for the PA64 port. */ | |
1549f619 | 692 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 693 | { |
1549f619 EZ |
694 | asection *lower_sect; |
695 | asection *sect; | |
696 | CORE_ADDR lower_offset; | |
697 | int i; | |
698 | ||
5417f6dc | 699 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
700 | continguous sections. FIXME!! won't work without call to find |
701 | .text first, but this assumes text is lowest section. */ | |
702 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
703 | if (lower_sect == NULL) | |
c906108c | 704 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 705 | &lower_sect); |
2acceee2 | 706 | if (lower_sect == NULL) |
8a3fe4f8 | 707 | warning (_("no loadable sections found in added symbol-file %s"), |
c906108c | 708 | objfile->name); |
5417f6dc | 709 | else |
b8fbeb18 | 710 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) |
8a3fe4f8 | 711 | warning (_("Lowest section in %s is %s at %s"), |
b8fbeb18 EZ |
712 | objfile->name, |
713 | bfd_section_name (objfile->obfd, lower_sect), | |
714 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
715 | if (lower_sect != NULL) |
716 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
717 | else | |
718 | lower_offset = 0; | |
5417f6dc | 719 | |
13de58df | 720 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
721 | FIXME! Sections must be in order of increasing loadable section |
722 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 723 | |
13de58df JB |
724 | Adjust offsets if the segments are not contiguous. |
725 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
726 | the offset of the highest loadable section lower than it |
727 | (the loadable section directly below it in memory). | |
728 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
729 | ||
1549f619 | 730 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
731 | { |
732 | if (addrs->other[i].addr != 0) | |
733 | { | |
734 | sect = bfd_get_section_by_name (objfile->obfd, | |
735 | addrs->other[i].name); | |
736 | if (sect) | |
737 | { | |
738 | addrs->other[i].addr | |
739 | -= bfd_section_vma (objfile->obfd, sect); | |
740 | lower_offset = addrs->other[i].addr; | |
741 | /* This is the index used by BFD. */ | |
742 | addrs->other[i].sectindex = sect->index ; | |
743 | } | |
744 | else | |
745 | { | |
8a3fe4f8 | 746 | warning (_("section %s not found in %s"), |
5417f6dc | 747 | addrs->other[i].name, |
7e8580c1 JB |
748 | objfile->name); |
749 | addrs->other[i].addr = 0; | |
750 | } | |
751 | } | |
752 | else | |
753 | addrs->other[i].addr = lower_offset; | |
754 | } | |
c906108c SS |
755 | } |
756 | ||
757 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
758 | appear for this new file, and record how verbose to be, then do the | |
759 | initial symbol reading for this file. */ | |
760 | ||
c5aa993b | 761 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 762 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 763 | |
7e8580c1 JB |
764 | if (addrs) |
765 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
766 | else | |
767 | { | |
768 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
769 | ||
770 | /* Just copy in the offset table directly as given to us. */ | |
771 | objfile->num_sections = num_offsets; | |
772 | objfile->section_offsets | |
773 | = ((struct section_offsets *) | |
8b92e4d5 | 774 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
775 | memcpy (objfile->section_offsets, offsets, size); |
776 | ||
777 | init_objfile_sect_indices (objfile); | |
778 | } | |
c906108c | 779 | |
52d16ba8 | 780 | #ifndef DEPRECATED_IBM6000_TARGET |
c906108c SS |
781 | /* This is a SVR4/SunOS specific hack, I think. In any event, it |
782 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
783 | because it knows the mapping between bfd sections and | |
784 | section_offsets. */ | |
785 | /* This is a hack. As far as I can tell, section offsets are not | |
786 | target dependent. They are all set to addr with a couple of | |
787 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
788 | offsets are kept in solib structures anyway and rs6000 xcoff | |
789 | which handles shared libraries in a completely unique way. | |
790 | ||
791 | Section offsets are built similarly, except that they are built | |
792 | by adding addr in all cases because there is no clear mapping | |
793 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 794 | has a different algorithm for finding section offsets. |
c906108c SS |
795 | |
796 | These should probably all be collapsed into some target | |
797 | independent form of shared library support. FIXME. */ | |
798 | ||
2acceee2 | 799 | if (addrs) |
c906108c SS |
800 | { |
801 | struct obj_section *s; | |
802 | ||
5417f6dc RM |
803 | /* Map section offsets in "addr" back to the object's |
804 | sections by comparing the section names with bfd's | |
2acceee2 JM |
805 | section names. Then adjust the section address by |
806 | the offset. */ /* for gdb/13815 */ | |
5417f6dc | 807 | |
96baa820 | 808 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 809 | { |
2acceee2 JM |
810 | CORE_ADDR s_addr = 0; |
811 | int i; | |
812 | ||
5417f6dc | 813 | for (i = 0; |
a39a16c4 | 814 | !s_addr && i < addrs->num_sections && addrs->other[i].name; |
62557bbc | 815 | i++) |
5417f6dc RM |
816 | if (strcmp (bfd_section_name (s->objfile->obfd, |
817 | s->the_bfd_section), | |
fbd35540 | 818 | addrs->other[i].name) == 0) |
2acceee2 | 819 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
5417f6dc | 820 | |
c906108c | 821 | s->addr -= s->offset; |
2acceee2 | 822 | s->addr += s_addr; |
c906108c | 823 | s->endaddr -= s->offset; |
2acceee2 JM |
824 | s->endaddr += s_addr; |
825 | s->offset += s_addr; | |
c906108c SS |
826 | } |
827 | } | |
52d16ba8 | 828 | #endif /* not DEPRECATED_IBM6000_TARGET */ |
c906108c | 829 | |
96baa820 | 830 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 831 | |
c906108c SS |
832 | /* Don't allow char * to have a typename (else would get caddr_t). |
833 | Ditto void *. FIXME: Check whether this is now done by all the | |
834 | symbol readers themselves (many of them now do), and if so remove | |
835 | it from here. */ | |
836 | ||
837 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
838 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
839 | ||
840 | /* Mark the objfile has having had initial symbol read attempted. Note | |
841 | that this does not mean we found any symbols... */ | |
842 | ||
c5aa993b | 843 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
844 | |
845 | /* Discard cleanups as symbol reading was successful. */ | |
846 | ||
847 | discard_cleanups (old_chain); | |
c906108c SS |
848 | } |
849 | ||
850 | /* Perform required actions after either reading in the initial | |
851 | symbols for a new objfile, or mapping in the symbols from a reusable | |
852 | objfile. */ | |
c5aa993b | 853 | |
c906108c | 854 | void |
fba45db2 | 855 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
856 | { |
857 | ||
858 | /* If this is the main symbol file we have to clean up all users of the | |
859 | old main symbol file. Otherwise it is sufficient to fixup all the | |
860 | breakpoints that may have been redefined by this symbol file. */ | |
861 | if (mainline) | |
862 | { | |
863 | /* OK, make it the "real" symbol file. */ | |
864 | symfile_objfile = objfile; | |
865 | ||
866 | clear_symtab_users (); | |
867 | } | |
868 | else | |
869 | { | |
870 | breakpoint_re_set (); | |
871 | } | |
872 | ||
873 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 874 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
875 | } |
876 | ||
877 | /* Process a symbol file, as either the main file or as a dynamically | |
878 | loaded file. | |
879 | ||
5417f6dc RM |
880 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
881 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f JB |
882 | |
883 | FROM_TTY says how verbose to be. | |
884 | ||
885 | MAINLINE specifies whether this is the main symbol file, or whether | |
886 | it's an extra symbol file such as dynamically loaded code. | |
887 | ||
888 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
889 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
890 | non-zero. | |
c906108c | 891 | |
c906108c SS |
892 | Upon success, returns a pointer to the objfile that was added. |
893 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f | 894 | static struct objfile * |
5417f6dc | 895 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, |
7904e09f JB |
896 | struct section_addr_info *addrs, |
897 | struct section_offsets *offsets, | |
898 | int num_offsets, | |
899 | int mainline, int flags) | |
c906108c SS |
900 | { |
901 | struct objfile *objfile; | |
902 | struct partial_symtab *psymtab; | |
5b5d99cf | 903 | char *debugfile; |
7b90c3f9 | 904 | struct section_addr_info *orig_addrs = NULL; |
a39a16c4 | 905 | struct cleanup *my_cleanups; |
5417f6dc | 906 | const char *name = bfd_get_filename (abfd); |
c906108c | 907 | |
5417f6dc | 908 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 909 | |
5417f6dc RM |
910 | /* Give user a chance to burp if we'd be |
911 | interactively wiping out any existing symbols. */ | |
c906108c SS |
912 | |
913 | if ((have_full_symbols () || have_partial_symbols ()) | |
914 | && mainline | |
915 | && from_tty | |
916 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
8a3fe4f8 | 917 | error (_("Not confirmed.")); |
c906108c | 918 | |
2df3850c | 919 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 920 | discard_cleanups (my_cleanups); |
c906108c | 921 | |
a39a16c4 | 922 | if (addrs) |
63cd24fe | 923 | { |
7b90c3f9 JB |
924 | orig_addrs = copy_section_addr_info (addrs); |
925 | make_cleanup_free_section_addr_info (orig_addrs); | |
63cd24fe | 926 | } |
a39a16c4 | 927 | |
78a4a9b9 AC |
928 | /* We either created a new mapped symbol table, mapped an existing |
929 | symbol table file which has not had initial symbol reading | |
930 | performed, or need to read an unmapped symbol table. */ | |
931 | if (from_tty || info_verbose) | |
c906108c | 932 | { |
769d7dc4 AC |
933 | if (deprecated_pre_add_symbol_hook) |
934 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 935 | else |
c906108c | 936 | { |
a3f17187 | 937 | printf_unfiltered (_("Reading symbols from %s..."), name); |
c906108c SS |
938 | wrap_here (""); |
939 | gdb_flush (gdb_stdout); | |
940 | } | |
c906108c | 941 | } |
78a4a9b9 AC |
942 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
943 | mainline, from_tty); | |
c906108c SS |
944 | |
945 | /* We now have at least a partial symbol table. Check to see if the | |
946 | user requested that all symbols be read on initial access via either | |
947 | the gdb startup command line or on a per symbol file basis. Expand | |
948 | all partial symbol tables for this objfile if so. */ | |
949 | ||
2acceee2 | 950 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
951 | { |
952 | if (from_tty || info_verbose) | |
953 | { | |
a3f17187 | 954 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
955 | wrap_here (""); |
956 | gdb_flush (gdb_stdout); | |
957 | } | |
958 | ||
c5aa993b | 959 | for (psymtab = objfile->psymtabs; |
c906108c | 960 | psymtab != NULL; |
c5aa993b | 961 | psymtab = psymtab->next) |
c906108c SS |
962 | { |
963 | psymtab_to_symtab (psymtab); | |
964 | } | |
965 | } | |
966 | ||
5b5d99cf JB |
967 | debugfile = find_separate_debug_file (objfile); |
968 | if (debugfile) | |
969 | { | |
5b5d99cf JB |
970 | if (addrs != NULL) |
971 | { | |
972 | objfile->separate_debug_objfile | |
a39a16c4 | 973 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
974 | } |
975 | else | |
976 | { | |
977 | objfile->separate_debug_objfile | |
978 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
979 | } | |
980 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
981 | = objfile; | |
5417f6dc | 982 | |
5b5d99cf JB |
983 | /* Put the separate debug object before the normal one, this is so that |
984 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
985 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 986 | |
5b5d99cf JB |
987 | xfree (debugfile); |
988 | } | |
5417f6dc | 989 | |
cb3c37b2 JB |
990 | if (!have_partial_symbols () && !have_full_symbols ()) |
991 | { | |
992 | wrap_here (""); | |
a3f17187 | 993 | printf_filtered (_("(no debugging symbols found)")); |
8f5ba92b JG |
994 | if (from_tty || info_verbose) |
995 | printf_filtered ("..."); | |
996 | else | |
997 | printf_filtered ("\n"); | |
cb3c37b2 JB |
998 | wrap_here (""); |
999 | } | |
1000 | ||
c906108c SS |
1001 | if (from_tty || info_verbose) |
1002 | { | |
769d7dc4 AC |
1003 | if (deprecated_post_add_symbol_hook) |
1004 | deprecated_post_add_symbol_hook (); | |
c906108c | 1005 | else |
c5aa993b | 1006 | { |
a3f17187 | 1007 | printf_unfiltered (_("done.\n")); |
c5aa993b | 1008 | } |
c906108c SS |
1009 | } |
1010 | ||
481d0f41 JB |
1011 | /* We print some messages regardless of whether 'from_tty || |
1012 | info_verbose' is true, so make sure they go out at the right | |
1013 | time. */ | |
1014 | gdb_flush (gdb_stdout); | |
1015 | ||
a39a16c4 MM |
1016 | do_cleanups (my_cleanups); |
1017 | ||
109f874e MS |
1018 | if (objfile->sf == NULL) |
1019 | return objfile; /* No symbols. */ | |
1020 | ||
c906108c SS |
1021 | new_symfile_objfile (objfile, mainline, from_tty); |
1022 | ||
9a4105ab AC |
1023 | if (deprecated_target_new_objfile_hook) |
1024 | deprecated_target_new_objfile_hook (objfile); | |
c906108c | 1025 | |
ce7d4522 | 1026 | bfd_cache_close_all (); |
c906108c SS |
1027 | return (objfile); |
1028 | } | |
1029 | ||
7904e09f | 1030 | |
eb4556d7 JB |
1031 | /* Process the symbol file ABFD, as either the main file or as a |
1032 | dynamically loaded file. | |
1033 | ||
1034 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1035 | details. */ | |
1036 | struct objfile * | |
1037 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |
1038 | struct section_addr_info *addrs, | |
1039 | int mainline, int flags) | |
1040 | { | |
1041 | return symbol_file_add_with_addrs_or_offsets (abfd, | |
1042 | from_tty, addrs, 0, 0, | |
1043 | mainline, flags); | |
1044 | } | |
1045 | ||
1046 | ||
7904e09f JB |
1047 | /* Process a symbol file, as either the main file or as a dynamically |
1048 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1049 | for details. */ | |
1050 | struct objfile * | |
1051 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1052 | int mainline, int flags) | |
1053 | { | |
eb4556d7 JB |
1054 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, |
1055 | addrs, mainline, flags); | |
7904e09f JB |
1056 | } |
1057 | ||
1058 | ||
d7db6da9 FN |
1059 | /* Call symbol_file_add() with default values and update whatever is |
1060 | affected by the loading of a new main(). | |
1061 | Used when the file is supplied in the gdb command line | |
1062 | and by some targets with special loading requirements. | |
1063 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1064 | argument for the switches that can only be specified in the symbol_file | |
1065 | command itself. */ | |
5417f6dc | 1066 | |
1adeb98a FN |
1067 | void |
1068 | symbol_file_add_main (char *args, int from_tty) | |
1069 | { | |
d7db6da9 FN |
1070 | symbol_file_add_main_1 (args, from_tty, 0); |
1071 | } | |
1072 | ||
1073 | static void | |
1074 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1075 | { | |
1076 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1077 | ||
d7db6da9 FN |
1078 | /* Getting new symbols may change our opinion about |
1079 | what is frameless. */ | |
1080 | reinit_frame_cache (); | |
1081 | ||
1082 | set_initial_language (); | |
1adeb98a FN |
1083 | } |
1084 | ||
1085 | void | |
1086 | symbol_file_clear (int from_tty) | |
1087 | { | |
1088 | if ((have_full_symbols () || have_partial_symbols ()) | |
1089 | && from_tty | |
0430b0d6 AS |
1090 | && (symfile_objfile |
1091 | ? !query (_("Discard symbol table from `%s'? "), | |
1092 | symfile_objfile->name) | |
1093 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1094 | error (_("Not confirmed.")); |
1adeb98a FN |
1095 | free_all_objfiles (); |
1096 | ||
1097 | /* solib descriptors may have handles to objfiles. Since their | |
1098 | storage has just been released, we'd better wipe the solib | |
1099 | descriptors as well. | |
1100 | */ | |
1101 | #if defined(SOLIB_RESTART) | |
1102 | SOLIB_RESTART (); | |
1103 | #endif | |
1104 | ||
1105 | symfile_objfile = NULL; | |
1106 | if (from_tty) | |
a3f17187 | 1107 | printf_unfiltered (_("No symbol file now.\n")); |
1adeb98a FN |
1108 | } |
1109 | ||
5b5d99cf JB |
1110 | static char * |
1111 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1112 | { | |
1113 | asection *sect; | |
1114 | bfd_size_type debuglink_size; | |
1115 | unsigned long crc32; | |
1116 | char *contents; | |
1117 | int crc_offset; | |
1118 | unsigned char *p; | |
5417f6dc | 1119 | |
5b5d99cf JB |
1120 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1121 | ||
1122 | if (sect == NULL) | |
1123 | return NULL; | |
1124 | ||
1125 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1126 | |
5b5d99cf JB |
1127 | contents = xmalloc (debuglink_size); |
1128 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1129 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1130 | ||
1131 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1132 | crc_offset = strlen (contents) + 1; | |
1133 | crc_offset = (crc_offset + 3) & ~3; | |
1134 | ||
1135 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1136 | |
5b5d99cf JB |
1137 | *crc32_out = crc32; |
1138 | return contents; | |
1139 | } | |
1140 | ||
1141 | static int | |
1142 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1143 | { | |
1144 | unsigned long file_crc = 0; | |
1145 | int fd; | |
777ea8f1 | 1146 | gdb_byte buffer[8*1024]; |
5b5d99cf JB |
1147 | int count; |
1148 | ||
1149 | fd = open (name, O_RDONLY | O_BINARY); | |
1150 | if (fd < 0) | |
1151 | return 0; | |
1152 | ||
1153 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1154 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1155 | ||
1156 | close (fd); | |
1157 | ||
1158 | return crc == file_crc; | |
1159 | } | |
1160 | ||
1161 | static char *debug_file_directory = NULL; | |
920d2a44 AC |
1162 | static void |
1163 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1164 | struct cmd_list_element *c, const char *value) | |
1165 | { | |
1166 | fprintf_filtered (file, _("\ | |
1167 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1168 | value); | |
1169 | } | |
5b5d99cf JB |
1170 | |
1171 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1172 | #define DEBUG_SUBDIRECTORY ".debug" | |
1173 | #endif | |
1174 | ||
1175 | static char * | |
1176 | find_separate_debug_file (struct objfile *objfile) | |
1177 | { | |
1178 | asection *sect; | |
1179 | char *basename; | |
1180 | char *dir; | |
1181 | char *debugfile; | |
1182 | char *name_copy; | |
1183 | bfd_size_type debuglink_size; | |
1184 | unsigned long crc32; | |
1185 | int i; | |
1186 | ||
1187 | basename = get_debug_link_info (objfile, &crc32); | |
1188 | ||
1189 | if (basename == NULL) | |
1190 | return NULL; | |
5417f6dc | 1191 | |
5b5d99cf JB |
1192 | dir = xstrdup (objfile->name); |
1193 | ||
fe36c4f4 JB |
1194 | /* Strip off the final filename part, leaving the directory name, |
1195 | followed by a slash. Objfile names should always be absolute and | |
1196 | tilde-expanded, so there should always be a slash in there | |
1197 | somewhere. */ | |
5b5d99cf JB |
1198 | for (i = strlen(dir) - 1; i >= 0; i--) |
1199 | { | |
1200 | if (IS_DIR_SEPARATOR (dir[i])) | |
1201 | break; | |
1202 | } | |
fe36c4f4 | 1203 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1204 | dir[i+1] = '\0'; |
5417f6dc | 1205 | |
5b5d99cf JB |
1206 | debugfile = alloca (strlen (debug_file_directory) + 1 |
1207 | + strlen (dir) | |
1208 | + strlen (DEBUG_SUBDIRECTORY) | |
1209 | + strlen ("/") | |
5417f6dc | 1210 | + strlen (basename) |
5b5d99cf JB |
1211 | + 1); |
1212 | ||
1213 | /* First try in the same directory as the original file. */ | |
1214 | strcpy (debugfile, dir); | |
1215 | strcat (debugfile, basename); | |
1216 | ||
1217 | if (separate_debug_file_exists (debugfile, crc32)) | |
1218 | { | |
1219 | xfree (basename); | |
1220 | xfree (dir); | |
1221 | return xstrdup (debugfile); | |
1222 | } | |
5417f6dc | 1223 | |
5b5d99cf JB |
1224 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1225 | strcpy (debugfile, dir); | |
1226 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1227 | strcat (debugfile, "/"); | |
1228 | strcat (debugfile, basename); | |
1229 | ||
1230 | if (separate_debug_file_exists (debugfile, crc32)) | |
1231 | { | |
1232 | xfree (basename); | |
1233 | xfree (dir); | |
1234 | return xstrdup (debugfile); | |
1235 | } | |
5417f6dc | 1236 | |
5b5d99cf JB |
1237 | /* Then try in the global debugfile directory. */ |
1238 | strcpy (debugfile, debug_file_directory); | |
1239 | strcat (debugfile, "/"); | |
1240 | strcat (debugfile, dir); | |
5b5d99cf JB |
1241 | strcat (debugfile, basename); |
1242 | ||
1243 | if (separate_debug_file_exists (debugfile, crc32)) | |
1244 | { | |
1245 | xfree (basename); | |
1246 | xfree (dir); | |
1247 | return xstrdup (debugfile); | |
1248 | } | |
5417f6dc | 1249 | |
5b5d99cf JB |
1250 | xfree (basename); |
1251 | xfree (dir); | |
1252 | return NULL; | |
1253 | } | |
1254 | ||
1255 | ||
c906108c SS |
1256 | /* This is the symbol-file command. Read the file, analyze its |
1257 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1258 | the command is rather bizarre: |
1259 | ||
1260 | 1. The function buildargv implements various quoting conventions | |
1261 | which are undocumented and have little or nothing in common with | |
1262 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1263 | ||
1264 | 2. Options are used, which are not generally used in GDB (perhaps | |
1265 | "set mapped on", "set readnow on" would be better) | |
1266 | ||
1267 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1268 | conventions (because it is confusing and inconvenient). */ |
1269 | ||
1270 | void | |
fba45db2 | 1271 | symbol_file_command (char *args, int from_tty) |
c906108c | 1272 | { |
c906108c SS |
1273 | dont_repeat (); |
1274 | ||
1275 | if (args == NULL) | |
1276 | { | |
1adeb98a | 1277 | symbol_file_clear (from_tty); |
c906108c SS |
1278 | } |
1279 | else | |
1280 | { | |
cb2f3a29 MK |
1281 | char **argv = buildargv (args); |
1282 | int flags = OBJF_USERLOADED; | |
1283 | struct cleanup *cleanups; | |
1284 | char *name = NULL; | |
1285 | ||
1286 | if (argv == NULL) | |
1287 | nomem (0); | |
1288 | ||
7a292a7a | 1289 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1290 | while (*argv != NULL) |
1291 | { | |
78a4a9b9 AC |
1292 | if (strcmp (*argv, "-readnow") == 0) |
1293 | flags |= OBJF_READNOW; | |
1294 | else if (**argv == '-') | |
8a3fe4f8 | 1295 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1296 | else |
1297 | { | |
cb2f3a29 | 1298 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1299 | name = *argv; |
78a4a9b9 | 1300 | } |
cb2f3a29 | 1301 | |
c906108c SS |
1302 | argv++; |
1303 | } | |
1304 | ||
1305 | if (name == NULL) | |
cb2f3a29 MK |
1306 | error (_("no symbol file name was specified")); |
1307 | ||
c906108c SS |
1308 | do_cleanups (cleanups); |
1309 | } | |
1310 | } | |
1311 | ||
1312 | /* Set the initial language. | |
1313 | ||
cb2f3a29 MK |
1314 | FIXME: A better solution would be to record the language in the |
1315 | psymtab when reading partial symbols, and then use it (if known) to | |
1316 | set the language. This would be a win for formats that encode the | |
1317 | language in an easily discoverable place, such as DWARF. For | |
1318 | stabs, we can jump through hoops looking for specially named | |
1319 | symbols or try to intuit the language from the specific type of | |
1320 | stabs we find, but we can't do that until later when we read in | |
1321 | full symbols. */ | |
c906108c SS |
1322 | |
1323 | static void | |
fba45db2 | 1324 | set_initial_language (void) |
c906108c SS |
1325 | { |
1326 | struct partial_symtab *pst; | |
c5aa993b | 1327 | enum language lang = language_unknown; |
c906108c SS |
1328 | |
1329 | pst = find_main_psymtab (); | |
1330 | if (pst != NULL) | |
1331 | { | |
c5aa993b | 1332 | if (pst->filename != NULL) |
cb2f3a29 MK |
1333 | lang = deduce_language_from_filename (pst->filename); |
1334 | ||
c906108c SS |
1335 | if (lang == language_unknown) |
1336 | { | |
c5aa993b JM |
1337 | /* Make C the default language */ |
1338 | lang = language_c; | |
c906108c | 1339 | } |
cb2f3a29 | 1340 | |
c906108c | 1341 | set_language (lang); |
cb2f3a29 | 1342 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1343 | } |
1344 | } | |
1345 | ||
cb2f3a29 MK |
1346 | /* Open the file specified by NAME and hand it off to BFD for |
1347 | preliminary analysis. Return a newly initialized bfd *, which | |
1348 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1349 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1350 | |
1351 | bfd * | |
fba45db2 | 1352 | symfile_bfd_open (char *name) |
c906108c SS |
1353 | { |
1354 | bfd *sym_bfd; | |
1355 | int desc; | |
1356 | char *absolute_name; | |
1357 | ||
cb2f3a29 | 1358 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1359 | |
1360 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 MK |
1361 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
1362 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1363 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1364 | if (desc < 0) |
1365 | { | |
1366 | char *exename = alloca (strlen (name) + 5); | |
1367 | strcat (strcpy (exename, name), ".exe"); | |
014d698b EZ |
1368 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
1369 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
c906108c SS |
1370 | } |
1371 | #endif | |
1372 | if (desc < 0) | |
1373 | { | |
b8c9b27d | 1374 | make_cleanup (xfree, name); |
c906108c SS |
1375 | perror_with_name (name); |
1376 | } | |
cb2f3a29 MK |
1377 | |
1378 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1379 | bfd. It'll be freed in free_objfile(). */ | |
1380 | xfree (name); | |
1381 | name = absolute_name; | |
c906108c | 1382 | |
9f76c2cd | 1383 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1384 | if (!sym_bfd) |
1385 | { | |
1386 | close (desc); | |
b8c9b27d | 1387 | make_cleanup (xfree, name); |
8a3fe4f8 | 1388 | error (_("\"%s\": can't open to read symbols: %s."), name, |
c906108c SS |
1389 | bfd_errmsg (bfd_get_error ())); |
1390 | } | |
549c1eea | 1391 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1392 | |
1393 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1394 | { | |
cb2f3a29 MK |
1395 | /* FIXME: should be checking for errors from bfd_close (for one |
1396 | thing, on error it does not free all the storage associated | |
1397 | with the bfd). */ | |
1398 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1399 | make_cleanup (xfree, name); |
8a3fe4f8 | 1400 | error (_("\"%s\": can't read symbols: %s."), name, |
c906108c SS |
1401 | bfd_errmsg (bfd_get_error ())); |
1402 | } | |
cb2f3a29 MK |
1403 | |
1404 | return sym_bfd; | |
c906108c SS |
1405 | } |
1406 | ||
cb2f3a29 MK |
1407 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1408 | the section was not found. */ | |
1409 | ||
0e931cf0 JB |
1410 | int |
1411 | get_section_index (struct objfile *objfile, char *section_name) | |
1412 | { | |
1413 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1414 | |
0e931cf0 JB |
1415 | if (sect) |
1416 | return sect->index; | |
1417 | else | |
1418 | return -1; | |
1419 | } | |
1420 | ||
cb2f3a29 MK |
1421 | /* Link SF into the global symtab_fns list. Called on startup by the |
1422 | _initialize routine in each object file format reader, to register | |
1423 | information about each format the the reader is prepared to | |
1424 | handle. */ | |
c906108c SS |
1425 | |
1426 | void | |
fba45db2 | 1427 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1428 | { |
1429 | sf->next = symtab_fns; | |
1430 | symtab_fns = sf; | |
1431 | } | |
1432 | ||
cb2f3a29 MK |
1433 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1434 | either returns or calls error(). The result is an initialized | |
1435 | struct sym_fns in the objfile structure, that contains cached | |
1436 | information about the symbol file. */ | |
c906108c SS |
1437 | |
1438 | static void | |
fba45db2 | 1439 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1440 | { |
1441 | struct sym_fns *sf; | |
c5aa993b JM |
1442 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1443 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1444 | |
75245b24 MS |
1445 | if (our_flavour == bfd_target_srec_flavour |
1446 | || our_flavour == bfd_target_ihex_flavour | |
1447 | || our_flavour == bfd_target_tekhex_flavour) | |
cb2f3a29 | 1448 | return; /* No symbols. */ |
75245b24 | 1449 | |
c5aa993b | 1450 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1451 | { |
c5aa993b | 1452 | if (our_flavour == sf->sym_flavour) |
c906108c | 1453 | { |
c5aa993b | 1454 | objfile->sf = sf; |
c906108c SS |
1455 | return; |
1456 | } | |
1457 | } | |
cb2f3a29 | 1458 | |
8a3fe4f8 | 1459 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
c5aa993b | 1460 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1461 | } |
1462 | \f | |
cb2f3a29 | 1463 | |
c906108c SS |
1464 | /* This function runs the load command of our current target. */ |
1465 | ||
1466 | static void | |
fba45db2 | 1467 | load_command (char *arg, int from_tty) |
c906108c SS |
1468 | { |
1469 | if (arg == NULL) | |
1470 | arg = get_exec_file (1); | |
1471 | target_load (arg, from_tty); | |
2889e661 JB |
1472 | |
1473 | /* After re-loading the executable, we don't really know which | |
1474 | overlays are mapped any more. */ | |
1475 | overlay_cache_invalid = 1; | |
c906108c SS |
1476 | } |
1477 | ||
1478 | /* This version of "load" should be usable for any target. Currently | |
1479 | it is just used for remote targets, not inftarg.c or core files, | |
1480 | on the theory that only in that case is it useful. | |
1481 | ||
1482 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1483 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1484 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1485 | performance compares. */ | |
917317f4 JM |
1486 | |
1487 | static int download_write_size = 512; | |
920d2a44 AC |
1488 | static void |
1489 | show_download_write_size (struct ui_file *file, int from_tty, | |
1490 | struct cmd_list_element *c, const char *value) | |
1491 | { | |
1492 | fprintf_filtered (file, _("\ | |
1493 | The write size used when downloading a program is %s.\n"), | |
1494 | value); | |
1495 | } | |
917317f4 JM |
1496 | static int validate_download = 0; |
1497 | ||
e4f9b4d5 MS |
1498 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1499 | ||
1500 | static void | |
1501 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1502 | { | |
1503 | bfd_size_type *sum = data; | |
1504 | ||
2c500098 | 1505 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1506 | } |
1507 | ||
1508 | /* Opaque data for load_section_callback. */ | |
1509 | struct load_section_data { | |
1510 | unsigned long load_offset; | |
1511 | unsigned long write_count; | |
1512 | unsigned long data_count; | |
1513 | bfd_size_type total_size; | |
1514 | }; | |
1515 | ||
1516 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1517 | ||
1518 | static void | |
1519 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1520 | { | |
1521 | struct load_section_data *args = data; | |
1522 | ||
1523 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1524 | { | |
2c500098 | 1525 | bfd_size_type size = bfd_get_section_size (asec); |
e4f9b4d5 MS |
1526 | if (size > 0) |
1527 | { | |
777ea8f1 | 1528 | gdb_byte *buffer; |
e4f9b4d5 MS |
1529 | struct cleanup *old_chain; |
1530 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1531 | bfd_size_type block_size; | |
1532 | int err; | |
1533 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1534 | bfd_size_type sent; | |
1535 | ||
1536 | if (download_write_size > 0 && size > download_write_size) | |
1537 | block_size = download_write_size; | |
1538 | else | |
1539 | block_size = size; | |
1540 | ||
1541 | buffer = xmalloc (size); | |
1542 | old_chain = make_cleanup (xfree, buffer); | |
1543 | ||
1544 | /* Is this really necessary? I guess it gives the user something | |
1545 | to look at during a long download. */ | |
e4f9b4d5 MS |
1546 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1547 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1548 | |
1549 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1550 | ||
1551 | sent = 0; | |
1552 | do | |
1553 | { | |
1554 | int len; | |
1555 | bfd_size_type this_transfer = size - sent; | |
1556 | ||
1557 | if (this_transfer >= block_size) | |
1558 | this_transfer = block_size; | |
1559 | len = target_write_memory_partial (lma, buffer, | |
1560 | this_transfer, &err); | |
1561 | if (err) | |
1562 | break; | |
1563 | if (validate_download) | |
1564 | { | |
1565 | /* Broken memories and broken monitors manifest | |
1566 | themselves here when bring new computers to | |
1567 | life. This doubles already slow downloads. */ | |
1568 | /* NOTE: cagney/1999-10-18: A more efficient | |
1569 | implementation might add a verify_memory() | |
1570 | method to the target vector and then use | |
1571 | that. remote.c could implement that method | |
1572 | using the ``qCRC'' packet. */ | |
777ea8f1 | 1573 | gdb_byte *check = xmalloc (len); |
5417f6dc | 1574 | struct cleanup *verify_cleanups = |
e4f9b4d5 MS |
1575 | make_cleanup (xfree, check); |
1576 | ||
1577 | if (target_read_memory (lma, check, len) != 0) | |
8a3fe4f8 | 1578 | error (_("Download verify read failed at 0x%s"), |
e4f9b4d5 MS |
1579 | paddr (lma)); |
1580 | if (memcmp (buffer, check, len) != 0) | |
8a3fe4f8 | 1581 | error (_("Download verify compare failed at 0x%s"), |
e4f9b4d5 MS |
1582 | paddr (lma)); |
1583 | do_cleanups (verify_cleanups); | |
1584 | } | |
1585 | args->data_count += len; | |
1586 | lma += len; | |
1587 | buffer += len; | |
1588 | args->write_count += 1; | |
1589 | sent += len; | |
1590 | if (quit_flag | |
9a4105ab AC |
1591 | || (deprecated_ui_load_progress_hook != NULL |
1592 | && deprecated_ui_load_progress_hook (sect_name, sent))) | |
8a3fe4f8 | 1593 | error (_("Canceled the download")); |
e4f9b4d5 | 1594 | |
9a4105ab AC |
1595 | if (deprecated_show_load_progress != NULL) |
1596 | deprecated_show_load_progress (sect_name, sent, size, | |
1597 | args->data_count, | |
1598 | args->total_size); | |
e4f9b4d5 MS |
1599 | } |
1600 | while (sent < size); | |
1601 | ||
1602 | if (err != 0) | |
8a3fe4f8 | 1603 | error (_("Memory access error while loading section %s."), sect_name); |
e4f9b4d5 MS |
1604 | |
1605 | do_cleanups (old_chain); | |
1606 | } | |
1607 | } | |
1608 | } | |
1609 | ||
c906108c | 1610 | void |
917317f4 | 1611 | generic_load (char *args, int from_tty) |
c906108c | 1612 | { |
c906108c SS |
1613 | asection *s; |
1614 | bfd *loadfile_bfd; | |
2b71414d | 1615 | struct timeval start_time, end_time; |
917317f4 JM |
1616 | char *filename; |
1617 | struct cleanup *old_cleanups; | |
1618 | char *offptr; | |
e4f9b4d5 MS |
1619 | struct load_section_data cbdata; |
1620 | CORE_ADDR entry; | |
1621 | ||
1622 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1623 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1624 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1625 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1626 | |
1627 | /* Parse the input argument - the user can specify a load offset as | |
1628 | a second argument. */ | |
1629 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1630 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1631 | strcpy (filename, args); |
1632 | offptr = strchr (filename, ' '); | |
1633 | if (offptr != NULL) | |
1634 | { | |
1635 | char *endptr; | |
ba5f2f8a | 1636 | |
e4f9b4d5 | 1637 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 | 1638 | if (offptr == endptr) |
8a3fe4f8 | 1639 | error (_("Invalid download offset:%s."), offptr); |
917317f4 JM |
1640 | *offptr = '\0'; |
1641 | } | |
c906108c | 1642 | else |
e4f9b4d5 | 1643 | cbdata.load_offset = 0; |
c906108c | 1644 | |
917317f4 | 1645 | /* Open the file for loading. */ |
c906108c SS |
1646 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1647 | if (loadfile_bfd == NULL) | |
1648 | { | |
1649 | perror_with_name (filename); | |
1650 | return; | |
1651 | } | |
917317f4 | 1652 | |
c906108c SS |
1653 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1654 | on error it does not free all the storage associated with the | |
1655 | bfd). */ | |
5c65bbb6 | 1656 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1657 | |
c5aa993b | 1658 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1659 | { |
8a3fe4f8 | 1660 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1661 | bfd_errmsg (bfd_get_error ())); |
1662 | } | |
c5aa993b | 1663 | |
5417f6dc | 1664 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
e4f9b4d5 | 1665 | (void *) &cbdata.total_size); |
c2d11a7d | 1666 | |
2b71414d | 1667 | gettimeofday (&start_time, NULL); |
c906108c | 1668 | |
e4f9b4d5 | 1669 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c | 1670 | |
2b71414d | 1671 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1672 | |
e4f9b4d5 | 1673 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1674 | ui_out_text (uiout, "Start address "); |
1675 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1676 | ui_out_text (uiout, ", load size "); | |
1677 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1678 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1679 | /* We were doing this in remote-mips.c, I suspect it is right |
1680 | for other targets too. */ | |
1681 | write_pc (entry); | |
c906108c | 1682 | |
7ca9f392 AC |
1683 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1684 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1685 | was commented out), making the call confuses GDB if more than one | |
1686 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1687 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1688 | |
5417f6dc | 1689 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
2b71414d | 1690 | cbdata.write_count, &start_time, &end_time); |
c906108c SS |
1691 | |
1692 | do_cleanups (old_cleanups); | |
1693 | } | |
1694 | ||
1695 | /* Report how fast the transfer went. */ | |
1696 | ||
917317f4 JM |
1697 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1698 | replaced by print_transfer_performance (with a very different | |
1699 | function signature). */ | |
1700 | ||
c906108c | 1701 | void |
fba45db2 KB |
1702 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1703 | time_t end_time) | |
c906108c | 1704 | { |
2b71414d DJ |
1705 | struct timeval start, end; |
1706 | ||
1707 | start.tv_sec = start_time; | |
1708 | start.tv_usec = 0; | |
1709 | end.tv_sec = end_time; | |
1710 | end.tv_usec = 0; | |
1711 | ||
1712 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
1713 | } |
1714 | ||
1715 | void | |
d9fcf2fb | 1716 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1717 | unsigned long data_count, |
1718 | unsigned long write_count, | |
2b71414d DJ |
1719 | const struct timeval *start_time, |
1720 | const struct timeval *end_time) | |
917317f4 | 1721 | { |
2b71414d DJ |
1722 | unsigned long time_count; |
1723 | ||
1724 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
1725 | accuracy and overflow. */ | |
1726 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
1727 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
1728 | ||
8b93c638 JM |
1729 | ui_out_text (uiout, "Transfer rate: "); |
1730 | if (time_count > 0) | |
1731 | { | |
5417f6dc | 1732 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
2b71414d | 1733 | 1000 * (data_count * 8) / time_count); |
8b93c638 JM |
1734 | ui_out_text (uiout, " bits/sec"); |
1735 | } | |
1736 | else | |
1737 | { | |
ba5f2f8a | 1738 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 1739 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
1740 | } |
1741 | if (write_count > 0) | |
1742 | { | |
1743 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1744 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1745 | ui_out_text (uiout, " bytes/write"); |
1746 | } | |
1747 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1748 | } |
1749 | ||
1750 | /* This function allows the addition of incrementally linked object files. | |
1751 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1752 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1753 | special case syntax for the rombug target (Rombug is the boot | |
1754 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1755 | rombug case, the user doesn't need to supply a text address, | |
1756 | instead a call to target_link() (in target.c) would supply the | |
1757 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 1758 | |
c906108c | 1759 | static void |
fba45db2 | 1760 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1761 | { |
db162d44 | 1762 | char *filename = NULL; |
2df3850c | 1763 | int flags = OBJF_USERLOADED; |
c906108c | 1764 | char *arg; |
2acceee2 | 1765 | int expecting_option = 0; |
db162d44 | 1766 | int section_index = 0; |
2acceee2 JM |
1767 | int argcnt = 0; |
1768 | int sec_num = 0; | |
1769 | int i; | |
db162d44 EZ |
1770 | int expecting_sec_name = 0; |
1771 | int expecting_sec_addr = 0; | |
1772 | ||
a39a16c4 | 1773 | struct sect_opt |
2acceee2 | 1774 | { |
2acceee2 JM |
1775 | char *name; |
1776 | char *value; | |
a39a16c4 | 1777 | }; |
db162d44 | 1778 | |
a39a16c4 MM |
1779 | struct section_addr_info *section_addrs; |
1780 | struct sect_opt *sect_opts = NULL; | |
1781 | size_t num_sect_opts = 0; | |
3017564a | 1782 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1783 | |
a39a16c4 | 1784 | num_sect_opts = 16; |
5417f6dc | 1785 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
1786 | * sizeof (struct sect_opt)); |
1787 | ||
c906108c SS |
1788 | dont_repeat (); |
1789 | ||
1790 | if (args == NULL) | |
8a3fe4f8 | 1791 | error (_("add-symbol-file takes a file name and an address")); |
c906108c SS |
1792 | |
1793 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1794 | args = xstrdup (args); |
c906108c | 1795 | |
2acceee2 | 1796 | while (*args != '\000') |
c906108c | 1797 | { |
db162d44 | 1798 | /* Any leading spaces? */ |
c5aa993b | 1799 | while (isspace (*args)) |
db162d44 EZ |
1800 | args++; |
1801 | ||
1802 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1803 | arg = args; |
db162d44 EZ |
1804 | |
1805 | /* Move args pointer over the argument. */ | |
c5aa993b | 1806 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1807 | args++; |
1808 | ||
1809 | /* If there are more arguments, terminate arg and | |
1810 | proceed past it. */ | |
c906108c | 1811 | if (*args != '\000') |
db162d44 EZ |
1812 | *args++ = '\000'; |
1813 | ||
1814 | /* Now process the argument. */ | |
1815 | if (argcnt == 0) | |
c906108c | 1816 | { |
db162d44 EZ |
1817 | /* The first argument is the file name. */ |
1818 | filename = tilde_expand (arg); | |
3017564a | 1819 | make_cleanup (xfree, filename); |
c906108c | 1820 | } |
db162d44 | 1821 | else |
7a78ae4e ND |
1822 | if (argcnt == 1) |
1823 | { | |
1824 | /* The second argument is always the text address at which | |
1825 | to load the program. */ | |
1826 | sect_opts[section_index].name = ".text"; | |
1827 | sect_opts[section_index].value = arg; | |
5417f6dc | 1828 | if (++section_index > num_sect_opts) |
a39a16c4 MM |
1829 | { |
1830 | num_sect_opts *= 2; | |
5417f6dc | 1831 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 1832 | xrealloc (sect_opts, |
5417f6dc | 1833 | num_sect_opts |
a39a16c4 MM |
1834 | * sizeof (struct sect_opt))); |
1835 | } | |
7a78ae4e ND |
1836 | } |
1837 | else | |
1838 | { | |
1839 | /* It's an option (starting with '-') or it's an argument | |
1840 | to an option */ | |
1841 | ||
1842 | if (*arg == '-') | |
1843 | { | |
78a4a9b9 AC |
1844 | if (strcmp (arg, "-readnow") == 0) |
1845 | flags |= OBJF_READNOW; | |
1846 | else if (strcmp (arg, "-s") == 0) | |
1847 | { | |
1848 | expecting_sec_name = 1; | |
1849 | expecting_sec_addr = 1; | |
1850 | } | |
7a78ae4e ND |
1851 | } |
1852 | else | |
1853 | { | |
1854 | if (expecting_sec_name) | |
db162d44 | 1855 | { |
7a78ae4e ND |
1856 | sect_opts[section_index].name = arg; |
1857 | expecting_sec_name = 0; | |
db162d44 EZ |
1858 | } |
1859 | else | |
7a78ae4e ND |
1860 | if (expecting_sec_addr) |
1861 | { | |
1862 | sect_opts[section_index].value = arg; | |
1863 | expecting_sec_addr = 0; | |
5417f6dc | 1864 | if (++section_index > num_sect_opts) |
a39a16c4 MM |
1865 | { |
1866 | num_sect_opts *= 2; | |
5417f6dc | 1867 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 1868 | xrealloc (sect_opts, |
5417f6dc | 1869 | num_sect_opts |
a39a16c4 MM |
1870 | * sizeof (struct sect_opt))); |
1871 | } | |
7a78ae4e ND |
1872 | } |
1873 | else | |
8a3fe4f8 | 1874 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
1875 | } |
1876 | } | |
db162d44 | 1877 | argcnt++; |
c906108c | 1878 | } |
c906108c | 1879 | |
927890d0 JB |
1880 | /* This command takes at least two arguments. The first one is a |
1881 | filename, and the second is the address where this file has been | |
1882 | loaded. Abort now if this address hasn't been provided by the | |
1883 | user. */ | |
1884 | if (section_index < 1) | |
1885 | error (_("The address where %s has been loaded is missing"), filename); | |
1886 | ||
db162d44 EZ |
1887 | /* Print the prompt for the query below. And save the arguments into |
1888 | a sect_addr_info structure to be passed around to other | |
1889 | functions. We have to split this up into separate print | |
bb599908 | 1890 | statements because hex_string returns a local static |
db162d44 | 1891 | string. */ |
5417f6dc | 1892 | |
a3f17187 | 1893 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
1894 | section_addrs = alloc_section_addr_info (section_index); |
1895 | make_cleanup (xfree, section_addrs); | |
db162d44 | 1896 | for (i = 0; i < section_index; i++) |
c906108c | 1897 | { |
db162d44 EZ |
1898 | CORE_ADDR addr; |
1899 | char *val = sect_opts[i].value; | |
1900 | char *sec = sect_opts[i].name; | |
5417f6dc | 1901 | |
ae822768 | 1902 | addr = parse_and_eval_address (val); |
db162d44 | 1903 | |
db162d44 EZ |
1904 | /* Here we store the section offsets in the order they were |
1905 | entered on the command line. */ | |
a39a16c4 MM |
1906 | section_addrs->other[sec_num].name = sec; |
1907 | section_addrs->other[sec_num].addr = addr; | |
46f45a4a | 1908 | printf_unfiltered ("\t%s_addr = %s\n", |
bb599908 | 1909 | sec, hex_string ((unsigned long)addr)); |
db162d44 EZ |
1910 | sec_num++; |
1911 | ||
5417f6dc | 1912 | /* The object's sections are initialized when a |
db162d44 | 1913 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 1914 | This happens in reread_symbols. |
db162d44 EZ |
1915 | At this point, we don't know what file type this is, |
1916 | so we can't determine what section names are valid. */ | |
2acceee2 | 1917 | } |
db162d44 | 1918 | |
2acceee2 | 1919 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 1920 | error (_("Not confirmed.")); |
c906108c | 1921 | |
a39a16c4 | 1922 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
1923 | |
1924 | /* Getting new symbols may change our opinion about what is | |
1925 | frameless. */ | |
1926 | reinit_frame_cache (); | |
db162d44 | 1927 | do_cleanups (my_cleanups); |
c906108c SS |
1928 | } |
1929 | \f | |
1930 | static void | |
fba45db2 | 1931 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1932 | { |
1933 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1934 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1935 | #else | |
8a3fe4f8 | 1936 | error (_("This command is not available in this configuration of GDB.")); |
c5aa993b | 1937 | #endif |
c906108c SS |
1938 | } |
1939 | \f | |
1940 | /* Re-read symbols if a symbol-file has changed. */ | |
1941 | void | |
fba45db2 | 1942 | reread_symbols (void) |
c906108c SS |
1943 | { |
1944 | struct objfile *objfile; | |
1945 | long new_modtime; | |
1946 | int reread_one = 0; | |
1947 | struct stat new_statbuf; | |
1948 | int res; | |
1949 | ||
1950 | /* With the addition of shared libraries, this should be modified, | |
1951 | the load time should be saved in the partial symbol tables, since | |
1952 | different tables may come from different source files. FIXME. | |
1953 | This routine should then walk down each partial symbol table | |
1954 | and see if the symbol table that it originates from has been changed */ | |
1955 | ||
c5aa993b JM |
1956 | for (objfile = object_files; objfile; objfile = objfile->next) |
1957 | { | |
1958 | if (objfile->obfd) | |
1959 | { | |
52d16ba8 | 1960 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
1961 | /* If this object is from a shared library, then you should |
1962 | stat on the library name, not member name. */ | |
c906108c | 1963 | |
c5aa993b JM |
1964 | if (objfile->obfd->my_archive) |
1965 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1966 | else | |
c906108c | 1967 | #endif |
c5aa993b JM |
1968 | res = stat (objfile->name, &new_statbuf); |
1969 | if (res != 0) | |
c906108c | 1970 | { |
c5aa993b | 1971 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
a3f17187 | 1972 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
c5aa993b JM |
1973 | objfile->name); |
1974 | continue; | |
c906108c | 1975 | } |
c5aa993b JM |
1976 | new_modtime = new_statbuf.st_mtime; |
1977 | if (new_modtime != objfile->mtime) | |
c906108c | 1978 | { |
c5aa993b JM |
1979 | struct cleanup *old_cleanups; |
1980 | struct section_offsets *offsets; | |
1981 | int num_offsets; | |
c5aa993b JM |
1982 | char *obfd_filename; |
1983 | ||
a3f17187 | 1984 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), |
c5aa993b JM |
1985 | objfile->name); |
1986 | ||
1987 | /* There are various functions like symbol_file_add, | |
1988 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1989 | appear to do what we want. But they have various other | |
1990 | effects which we *don't* want. So we just do stuff | |
1991 | ourselves. We don't worry about mapped files (for one thing, | |
1992 | any mapped file will be out of date). */ | |
1993 | ||
1994 | /* If we get an error, blow away this objfile (not sure if | |
1995 | that is the correct response for things like shared | |
1996 | libraries). */ | |
74b7792f | 1997 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1998 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1999 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
2000 | |
2001 | /* Clean up any state BFD has sitting around. We don't need | |
2002 | to close the descriptor but BFD lacks a way of closing the | |
2003 | BFD without closing the descriptor. */ | |
2004 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2005 | if (!bfd_close (objfile->obfd)) | |
8a3fe4f8 | 2006 | error (_("Can't close BFD for %s: %s"), objfile->name, |
c5aa993b JM |
2007 | bfd_errmsg (bfd_get_error ())); |
2008 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
2009 | if (objfile->obfd == NULL) | |
8a3fe4f8 | 2010 | error (_("Can't open %s to read symbols."), objfile->name); |
c5aa993b JM |
2011 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2012 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
8a3fe4f8 | 2013 | error (_("Can't read symbols from %s: %s."), objfile->name, |
c5aa993b JM |
2014 | bfd_errmsg (bfd_get_error ())); |
2015 | ||
2016 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 2017 | objfile_obstack. */ |
c5aa993b | 2018 | num_offsets = objfile->num_sections; |
5417f6dc | 2019 | offsets = ((struct section_offsets *) |
a39a16c4 | 2020 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 2021 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 2022 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b | 2023 | |
ae5a43e0 DJ |
2024 | /* Remove any references to this objfile in the global |
2025 | value lists. */ | |
2026 | preserve_values (objfile); | |
2027 | ||
c5aa993b JM |
2028 | /* Nuke all the state that we will re-read. Much of the following |
2029 | code which sets things to NULL really is necessary to tell | |
2030 | other parts of GDB that there is nothing currently there. */ | |
2031 | ||
2032 | /* FIXME: Do we have to free a whole linked list, or is this | |
2033 | enough? */ | |
2034 | if (objfile->global_psymbols.list) | |
2dc74dc1 | 2035 | xfree (objfile->global_psymbols.list); |
c5aa993b JM |
2036 | memset (&objfile->global_psymbols, 0, |
2037 | sizeof (objfile->global_psymbols)); | |
2038 | if (objfile->static_psymbols.list) | |
2dc74dc1 | 2039 | xfree (objfile->static_psymbols.list); |
c5aa993b JM |
2040 | memset (&objfile->static_psymbols, 0, |
2041 | sizeof (objfile->static_psymbols)); | |
2042 | ||
2043 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
2044 | bcache_xfree (objfile->psymbol_cache); |
2045 | objfile->psymbol_cache = bcache_xmalloc (); | |
2046 | bcache_xfree (objfile->macro_cache); | |
2047 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
2048 | if (objfile->demangled_names_hash != NULL) |
2049 | { | |
2050 | htab_delete (objfile->demangled_names_hash); | |
2051 | objfile->demangled_names_hash = NULL; | |
2052 | } | |
b99607ea | 2053 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
2054 | objfile->sections = NULL; |
2055 | objfile->symtabs = NULL; | |
2056 | objfile->psymtabs = NULL; | |
2057 | objfile->free_psymtabs = NULL; | |
a1b8c067 | 2058 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 2059 | objfile->msymbols = NULL; |
0a6ddd08 | 2060 | objfile->deprecated_sym_private = NULL; |
c5aa993b | 2061 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
2062 | memset (&objfile->msymbol_hash, 0, |
2063 | sizeof (objfile->msymbol_hash)); | |
2064 | memset (&objfile->msymbol_demangled_hash, 0, | |
2065 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b | 2066 | objfile->fundamental_types = NULL; |
7b097ae3 | 2067 | clear_objfile_data (objfile); |
c5aa993b JM |
2068 | if (objfile->sf != NULL) |
2069 | { | |
2070 | (*objfile->sf->sym_finish) (objfile); | |
2071 | } | |
2072 | ||
2073 | /* We never make this a mapped file. */ | |
2074 | objfile->md = NULL; | |
af5f3db6 AC |
2075 | objfile->psymbol_cache = bcache_xmalloc (); |
2076 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
2077 | /* obstack_init also initializes the obstack so it is |
2078 | empty. We could use obstack_specify_allocation but | |
2079 | gdb_obstack.h specifies the alloc/dealloc | |
2080 | functions. */ | |
2081 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
2082 | if (build_objfile_section_table (objfile)) |
2083 | { | |
8a3fe4f8 | 2084 | error (_("Can't find the file sections in `%s': %s"), |
c5aa993b JM |
2085 | objfile->name, bfd_errmsg (bfd_get_error ())); |
2086 | } | |
15831452 | 2087 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2088 | |
2089 | /* We use the same section offsets as from last time. I'm not | |
2090 | sure whether that is always correct for shared libraries. */ | |
2091 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 2092 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 2093 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 2094 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 2095 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
2096 | objfile->num_sections = num_offsets; |
2097 | ||
2098 | /* What the hell is sym_new_init for, anyway? The concept of | |
2099 | distinguishing between the main file and additional files | |
2100 | in this way seems rather dubious. */ | |
2101 | if (objfile == symfile_objfile) | |
2102 | { | |
2103 | (*objfile->sf->sym_new_init) (objfile); | |
c5aa993b JM |
2104 | } |
2105 | ||
2106 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2107 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2108 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2109 | zero is OK since dbxread.c also does what it needs to do if | |
2110 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2111 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2112 | if (!have_partial_symbols () && !have_full_symbols ()) |
2113 | { | |
2114 | wrap_here (""); | |
a3f17187 | 2115 | printf_unfiltered (_("(no debugging symbols found)\n")); |
c5aa993b JM |
2116 | wrap_here (""); |
2117 | } | |
2118 | objfile->flags |= OBJF_SYMS; | |
2119 | ||
2120 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2121 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2122 | |
c5aa993b JM |
2123 | /* Getting new symbols may change our opinion about what is |
2124 | frameless. */ | |
c906108c | 2125 | |
c5aa993b | 2126 | reinit_frame_cache (); |
c906108c | 2127 | |
c5aa993b JM |
2128 | /* Discard cleanups as symbol reading was successful. */ |
2129 | discard_cleanups (old_cleanups); | |
c906108c | 2130 | |
c5aa993b JM |
2131 | /* If the mtime has changed between the time we set new_modtime |
2132 | and now, we *want* this to be out of date, so don't call stat | |
2133 | again now. */ | |
2134 | objfile->mtime = new_modtime; | |
2135 | reread_one = 1; | |
5b5d99cf | 2136 | reread_separate_symbols (objfile); |
c5aa993b | 2137 | } |
c906108c SS |
2138 | } |
2139 | } | |
c906108c SS |
2140 | |
2141 | if (reread_one) | |
ea53e89f JB |
2142 | { |
2143 | clear_symtab_users (); | |
2144 | /* At least one objfile has changed, so we can consider that | |
2145 | the executable we're debugging has changed too. */ | |
2146 | observer_notify_executable_changed (NULL); | |
2147 | } | |
2148 | ||
c906108c | 2149 | } |
5b5d99cf JB |
2150 | |
2151 | ||
2152 | /* Handle separate debug info for OBJFILE, which has just been | |
2153 | re-read: | |
2154 | - If we had separate debug info before, but now we don't, get rid | |
2155 | of the separated objfile. | |
2156 | - If we didn't have separated debug info before, but now we do, | |
2157 | read in the new separated debug info file. | |
2158 | - If the debug link points to a different file, toss the old one | |
2159 | and read the new one. | |
2160 | This function does *not* handle the case where objfile is still | |
2161 | using the same separate debug info file, but that file's timestamp | |
2162 | has changed. That case should be handled by the loop in | |
2163 | reread_symbols already. */ | |
2164 | static void | |
2165 | reread_separate_symbols (struct objfile *objfile) | |
2166 | { | |
2167 | char *debug_file; | |
2168 | unsigned long crc32; | |
2169 | ||
2170 | /* Does the updated objfile's debug info live in a | |
2171 | separate file? */ | |
2172 | debug_file = find_separate_debug_file (objfile); | |
2173 | ||
2174 | if (objfile->separate_debug_objfile) | |
2175 | { | |
2176 | /* There are two cases where we need to get rid of | |
2177 | the old separated debug info objfile: | |
2178 | - if the new primary objfile doesn't have | |
2179 | separated debug info, or | |
2180 | - if the new primary objfile has separate debug | |
2181 | info, but it's under a different filename. | |
5417f6dc | 2182 | |
5b5d99cf JB |
2183 | If the old and new objfiles both have separate |
2184 | debug info, under the same filename, then we're | |
2185 | okay --- if the separated file's contents have | |
2186 | changed, we will have caught that when we | |
2187 | visited it in this function's outermost | |
2188 | loop. */ | |
2189 | if (! debug_file | |
2190 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2191 | free_objfile (objfile->separate_debug_objfile); | |
2192 | } | |
2193 | ||
2194 | /* If the new objfile has separate debug info, and we | |
2195 | haven't loaded it already, do so now. */ | |
2196 | if (debug_file | |
2197 | && ! objfile->separate_debug_objfile) | |
2198 | { | |
2199 | /* Use the same section offset table as objfile itself. | |
2200 | Preserve the flags from objfile that make sense. */ | |
2201 | objfile->separate_debug_objfile | |
2202 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2203 | (symfile_bfd_open (debug_file), |
5b5d99cf JB |
2204 | info_verbose, /* from_tty: Don't override the default. */ |
2205 | 0, /* No addr table. */ | |
2206 | objfile->section_offsets, objfile->num_sections, | |
2207 | 0, /* Not mainline. See comments about this above. */ | |
78a4a9b9 | 2208 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2209 | | OBJF_USERLOADED))); |
2210 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2211 | = objfile; | |
2212 | } | |
2213 | } | |
2214 | ||
2215 | ||
c906108c SS |
2216 | \f |
2217 | ||
c5aa993b JM |
2218 | |
2219 | typedef struct | |
2220 | { | |
2221 | char *ext; | |
c906108c | 2222 | enum language lang; |
c5aa993b JM |
2223 | } |
2224 | filename_language; | |
c906108c | 2225 | |
c5aa993b | 2226 | static filename_language *filename_language_table; |
c906108c SS |
2227 | static int fl_table_size, fl_table_next; |
2228 | ||
2229 | static void | |
fba45db2 | 2230 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2231 | { |
2232 | if (fl_table_next >= fl_table_size) | |
2233 | { | |
2234 | fl_table_size += 10; | |
5417f6dc | 2235 | filename_language_table = |
25bf3106 PM |
2236 | xrealloc (filename_language_table, |
2237 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2238 | } |
2239 | ||
4fcf66da | 2240 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2241 | filename_language_table[fl_table_next].lang = lang; |
2242 | fl_table_next++; | |
2243 | } | |
2244 | ||
2245 | static char *ext_args; | |
920d2a44 AC |
2246 | static void |
2247 | show_ext_args (struct ui_file *file, int from_tty, | |
2248 | struct cmd_list_element *c, const char *value) | |
2249 | { | |
2250 | fprintf_filtered (file, _("\ | |
2251 | Mapping between filename extension and source language is \"%s\".\n"), | |
2252 | value); | |
2253 | } | |
c906108c SS |
2254 | |
2255 | static void | |
26c41df3 | 2256 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2257 | { |
2258 | int i; | |
2259 | char *cp = ext_args; | |
2260 | enum language lang; | |
2261 | ||
2262 | /* First arg is filename extension, starting with '.' */ | |
2263 | if (*cp != '.') | |
8a3fe4f8 | 2264 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2265 | |
2266 | /* Find end of first arg. */ | |
c5aa993b | 2267 | while (*cp && !isspace (*cp)) |
c906108c SS |
2268 | cp++; |
2269 | ||
2270 | if (*cp == '\0') | |
8a3fe4f8 | 2271 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2272 | ext_args); |
2273 | ||
2274 | /* Null-terminate first arg */ | |
c5aa993b | 2275 | *cp++ = '\0'; |
c906108c SS |
2276 | |
2277 | /* Find beginning of second arg, which should be a source language. */ | |
2278 | while (*cp && isspace (*cp)) | |
2279 | cp++; | |
2280 | ||
2281 | if (*cp == '\0') | |
8a3fe4f8 | 2282 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2283 | ext_args); |
2284 | ||
2285 | /* Lookup the language from among those we know. */ | |
2286 | lang = language_enum (cp); | |
2287 | ||
2288 | /* Now lookup the filename extension: do we already know it? */ | |
2289 | for (i = 0; i < fl_table_next; i++) | |
2290 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2291 | break; | |
2292 | ||
2293 | if (i >= fl_table_next) | |
2294 | { | |
2295 | /* new file extension */ | |
2296 | add_filename_language (ext_args, lang); | |
2297 | } | |
2298 | else | |
2299 | { | |
2300 | /* redefining a previously known filename extension */ | |
2301 | ||
2302 | /* if (from_tty) */ | |
2303 | /* query ("Really make files of type %s '%s'?", */ | |
2304 | /* ext_args, language_str (lang)); */ | |
2305 | ||
b8c9b27d | 2306 | xfree (filename_language_table[i].ext); |
4fcf66da | 2307 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2308 | filename_language_table[i].lang = lang; |
2309 | } | |
2310 | } | |
2311 | ||
2312 | static void | |
fba45db2 | 2313 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2314 | { |
2315 | int i; | |
2316 | ||
a3f17187 | 2317 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2318 | printf_filtered ("\n\n"); |
2319 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2320 | printf_filtered ("\t%s\t- %s\n", |
2321 | filename_language_table[i].ext, | |
c906108c SS |
2322 | language_str (filename_language_table[i].lang)); |
2323 | } | |
2324 | ||
2325 | static void | |
fba45db2 | 2326 | init_filename_language_table (void) |
c906108c SS |
2327 | { |
2328 | if (fl_table_size == 0) /* protect against repetition */ | |
2329 | { | |
2330 | fl_table_size = 20; | |
2331 | fl_table_next = 0; | |
c5aa993b | 2332 | filename_language_table = |
c906108c | 2333 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2334 | add_filename_language (".c", language_c); |
2335 | add_filename_language (".C", language_cplus); | |
2336 | add_filename_language (".cc", language_cplus); | |
2337 | add_filename_language (".cp", language_cplus); | |
2338 | add_filename_language (".cpp", language_cplus); | |
2339 | add_filename_language (".cxx", language_cplus); | |
2340 | add_filename_language (".c++", language_cplus); | |
2341 | add_filename_language (".java", language_java); | |
c906108c | 2342 | add_filename_language (".class", language_java); |
da2cf7e0 | 2343 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2344 | add_filename_language (".f", language_fortran); |
2345 | add_filename_language (".F", language_fortran); | |
2346 | add_filename_language (".s", language_asm); | |
2347 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2348 | add_filename_language (".pas", language_pascal); |
2349 | add_filename_language (".p", language_pascal); | |
2350 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2351 | add_filename_language (".adb", language_ada); |
2352 | add_filename_language (".ads", language_ada); | |
2353 | add_filename_language (".a", language_ada); | |
2354 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2355 | } |
2356 | } | |
2357 | ||
2358 | enum language | |
fba45db2 | 2359 | deduce_language_from_filename (char *filename) |
c906108c SS |
2360 | { |
2361 | int i; | |
2362 | char *cp; | |
2363 | ||
2364 | if (filename != NULL) | |
2365 | if ((cp = strrchr (filename, '.')) != NULL) | |
2366 | for (i = 0; i < fl_table_next; i++) | |
2367 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2368 | return filename_language_table[i].lang; | |
2369 | ||
2370 | return language_unknown; | |
2371 | } | |
2372 | \f | |
2373 | /* allocate_symtab: | |
2374 | ||
2375 | Allocate and partly initialize a new symbol table. Return a pointer | |
2376 | to it. error() if no space. | |
2377 | ||
2378 | Caller must set these fields: | |
c5aa993b JM |
2379 | LINETABLE(symtab) |
2380 | symtab->blockvector | |
2381 | symtab->dirname | |
2382 | symtab->free_code | |
2383 | symtab->free_ptr | |
2384 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2385 | */ |
2386 | ||
2387 | struct symtab * | |
fba45db2 | 2388 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2389 | { |
52f0bd74 | 2390 | struct symtab *symtab; |
c906108c SS |
2391 | |
2392 | symtab = (struct symtab *) | |
4a146b47 | 2393 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2394 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2395 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2396 | &objfile->objfile_obstack); |
c5aa993b JM |
2397 | symtab->fullname = NULL; |
2398 | symtab->language = deduce_language_from_filename (filename); | |
2399 | symtab->debugformat = obsavestring ("unknown", 7, | |
4a146b47 | 2400 | &objfile->objfile_obstack); |
c906108c SS |
2401 | |
2402 | /* Hook it to the objfile it comes from */ | |
2403 | ||
c5aa993b JM |
2404 | symtab->objfile = objfile; |
2405 | symtab->next = objfile->symtabs; | |
2406 | objfile->symtabs = symtab; | |
c906108c SS |
2407 | |
2408 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2409 | and the Z8000 definition of this macro doesn't have anything to | |
2410 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2411 | here for convenience. */ | |
2412 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2413 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2414 | #endif | |
2415 | ||
2416 | return (symtab); | |
2417 | } | |
2418 | ||
2419 | struct partial_symtab * | |
fba45db2 | 2420 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2421 | { |
2422 | struct partial_symtab *psymtab; | |
2423 | ||
c5aa993b | 2424 | if (objfile->free_psymtabs) |
c906108c | 2425 | { |
c5aa993b JM |
2426 | psymtab = objfile->free_psymtabs; |
2427 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2428 | } |
2429 | else | |
2430 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2431 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2432 | sizeof (struct partial_symtab)); |
2433 | ||
2434 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2435 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2436 | &objfile->objfile_obstack); |
c5aa993b | 2437 | psymtab->symtab = NULL; |
c906108c SS |
2438 | |
2439 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2440 | Psymtabs are searched in most recent inserted -> least recent | |
2441 | inserted order. */ | |
2442 | ||
c5aa993b JM |
2443 | psymtab->objfile = objfile; |
2444 | psymtab->next = objfile->psymtabs; | |
2445 | objfile->psymtabs = psymtab; | |
c906108c SS |
2446 | #if 0 |
2447 | { | |
2448 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2449 | psymtab->objfile = objfile; |
2450 | psymtab->next = NULL; | |
2451 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2452 | while ((*prev_pst) != NULL) |
c5aa993b | 2453 | prev_pst = &((*prev_pst)->next); |
c906108c | 2454 | (*prev_pst) = psymtab; |
c5aa993b | 2455 | } |
c906108c | 2456 | #endif |
c5aa993b | 2457 | |
c906108c SS |
2458 | return (psymtab); |
2459 | } | |
2460 | ||
2461 | void | |
fba45db2 | 2462 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2463 | { |
2464 | struct partial_symtab **prev_pst; | |
2465 | ||
2466 | /* From dbxread.c: | |
2467 | Empty psymtabs happen as a result of header files which don't | |
2468 | have any symbols in them. There can be a lot of them. But this | |
2469 | check is wrong, in that a psymtab with N_SLINE entries but | |
2470 | nothing else is not empty, but we don't realize that. Fixing | |
2471 | that without slowing things down might be tricky. */ | |
2472 | ||
2473 | /* First, snip it out of the psymtab chain */ | |
2474 | ||
2475 | prev_pst = &(pst->objfile->psymtabs); | |
2476 | while ((*prev_pst) != pst) | |
2477 | prev_pst = &((*prev_pst)->next); | |
2478 | (*prev_pst) = pst->next; | |
2479 | ||
2480 | /* Next, put it on a free list for recycling */ | |
2481 | ||
2482 | pst->next = pst->objfile->free_psymtabs; | |
2483 | pst->objfile->free_psymtabs = pst; | |
2484 | } | |
c906108c | 2485 | \f |
c5aa993b | 2486 | |
c906108c SS |
2487 | /* Reset all data structures in gdb which may contain references to symbol |
2488 | table data. */ | |
2489 | ||
2490 | void | |
fba45db2 | 2491 | clear_symtab_users (void) |
c906108c SS |
2492 | { |
2493 | /* Someday, we should do better than this, by only blowing away | |
2494 | the things that really need to be blown. */ | |
c0501be5 DJ |
2495 | |
2496 | /* Clear the "current" symtab first, because it is no longer valid. | |
2497 | breakpoint_re_set may try to access the current symtab. */ | |
2498 | clear_current_source_symtab_and_line (); | |
2499 | ||
c906108c | 2500 | clear_displays (); |
c906108c SS |
2501 | breakpoint_re_set (); |
2502 | set_default_breakpoint (0, 0, 0, 0); | |
c906108c | 2503 | clear_pc_function_cache (); |
9a4105ab AC |
2504 | if (deprecated_target_new_objfile_hook) |
2505 | deprecated_target_new_objfile_hook (NULL); | |
c906108c SS |
2506 | } |
2507 | ||
74b7792f AC |
2508 | static void |
2509 | clear_symtab_users_cleanup (void *ignore) | |
2510 | { | |
2511 | clear_symtab_users (); | |
2512 | } | |
2513 | ||
c906108c SS |
2514 | /* clear_symtab_users_once: |
2515 | ||
2516 | This function is run after symbol reading, or from a cleanup. | |
2517 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2518 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2519 | reference it have not yet been cleared or re-directed. (The old |
2520 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2521 | below.) | |
2522 | ||
2523 | This function can be queued N times as a cleanup, or called | |
2524 | directly; it will do all the work the first time, and then will be a | |
2525 | no-op until the next time it is queued. This works by bumping a | |
2526 | counter at queueing time. Much later when the cleanup is run, or at | |
2527 | the end of symbol processing (in case the cleanup is discarded), if | |
2528 | the queued count is greater than the "done-count", we do the work | |
2529 | and set the done-count to the queued count. If the queued count is | |
2530 | less than or equal to the done-count, we just ignore the call. This | |
2531 | is needed because reading a single .o file will often replace many | |
2532 | symtabs (one per .h file, for example), and we don't want to reset | |
2533 | the breakpoints N times in the user's face. | |
2534 | ||
2535 | The reason we both queue a cleanup, and call it directly after symbol | |
2536 | reading, is because the cleanup protects us in case of errors, but is | |
2537 | discarded if symbol reading is successful. */ | |
2538 | ||
2539 | #if 0 | |
2540 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2541 | is no longer needed. */ | |
a14ed312 | 2542 | static void clear_symtab_users_once (void); |
c906108c SS |
2543 | |
2544 | static int clear_symtab_users_queued; | |
2545 | static int clear_symtab_users_done; | |
2546 | ||
2547 | static void | |
fba45db2 | 2548 | clear_symtab_users_once (void) |
c906108c SS |
2549 | { |
2550 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2551 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2552 | return; | |
2553 | clear_symtab_users_done = clear_symtab_users_queued; | |
2554 | ||
2555 | clear_symtab_users (); | |
2556 | } | |
2557 | #endif | |
2558 | ||
2559 | /* Delete the specified psymtab, and any others that reference it. */ | |
2560 | ||
2561 | static void | |
fba45db2 | 2562 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2563 | { |
2564 | struct partial_symtab *ps, *pprev = NULL; | |
2565 | int i; | |
2566 | ||
2567 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2568 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2569 | { | |
2570 | if (ps == pst) | |
2571 | break; | |
2572 | pprev = ps; | |
2573 | } | |
c906108c | 2574 | |
c5aa993b JM |
2575 | if (ps) |
2576 | { | |
2577 | /* Unhook it from the chain. */ | |
2578 | if (ps == pst->objfile->psymtabs) | |
2579 | pst->objfile->psymtabs = ps->next; | |
2580 | else | |
2581 | pprev->next = ps->next; | |
2582 | ||
2583 | /* FIXME, we can't conveniently deallocate the entries in the | |
2584 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2585 | this psymtab points to. These just take up space until all | |
2586 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2587 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2588 | |
2589 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2590 | again: | |
2591 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2592 | { | |
2593 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2594 | { | |
2595 | if (ps->dependencies[i] == pst) | |
2596 | { | |
2597 | cashier_psymtab (ps); | |
2598 | goto again; /* Must restart, chain has been munged. */ | |
2599 | } | |
2600 | } | |
c906108c | 2601 | } |
c906108c | 2602 | } |
c906108c SS |
2603 | } |
2604 | ||
2605 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2606 | with any dependent breakpoints, displays, etc. | |
2607 | Used when loading new versions of object modules with the "add-file" | |
2608 | command. This is only called on the top-level symtab or psymtab's name; | |
2609 | it is not called for subsidiary files such as .h files. | |
2610 | ||
2611 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2612 | FIXME. The return value appears to never be used. |
c906108c SS |
2613 | |
2614 | FIXME. I think this is not the best way to do this. We should | |
2615 | work on being gentler to the environment while still cleaning up | |
2616 | all stray pointers into the freed symtab. */ | |
2617 | ||
2618 | int | |
fba45db2 | 2619 | free_named_symtabs (char *name) |
c906108c SS |
2620 | { |
2621 | #if 0 | |
2622 | /* FIXME: With the new method of each objfile having it's own | |
2623 | psymtab list, this function needs serious rethinking. In particular, | |
2624 | why was it ever necessary to toss psymtabs with specific compilation | |
2625 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2626 | file? -- fnf | |
2627 | Well, the answer is that some systems permit reloading of particular | |
2628 | compilation units. We want to blow away any old info about these | |
2629 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2630 | ||
52f0bd74 AC |
2631 | struct symtab *s; |
2632 | struct symtab *prev; | |
2633 | struct partial_symtab *ps; | |
c906108c SS |
2634 | struct blockvector *bv; |
2635 | int blewit = 0; | |
2636 | ||
2637 | /* We only wack things if the symbol-reload switch is set. */ | |
2638 | if (!symbol_reloading) | |
2639 | return 0; | |
2640 | ||
2641 | /* Some symbol formats have trouble providing file names... */ | |
2642 | if (name == 0 || *name == '\0') | |
2643 | return 0; | |
2644 | ||
2645 | /* Look for a psymtab with the specified name. */ | |
2646 | ||
2647 | again2: | |
c5aa993b JM |
2648 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2649 | { | |
6314a349 | 2650 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2651 | { |
2652 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2653 | goto again2; /* Must restart, chain has been munged */ | |
2654 | } | |
c906108c | 2655 | } |
c906108c SS |
2656 | |
2657 | /* Look for a symtab with the specified name. */ | |
2658 | ||
2659 | for (s = symtab_list; s; s = s->next) | |
2660 | { | |
6314a349 | 2661 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2662 | break; |
2663 | prev = s; | |
2664 | } | |
2665 | ||
2666 | if (s) | |
2667 | { | |
2668 | if (s == symtab_list) | |
2669 | symtab_list = s->next; | |
2670 | else | |
2671 | prev->next = s->next; | |
2672 | ||
2673 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2674 | or not they depend on the symtab being freed. This should be |
2675 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2676 | |
2677 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2678 | This test is necessary due to a bug in "dbxread.c" that |
2679 | causes empty symtabs to be created for N_SO symbols that | |
2680 | contain the pathname of the object file. (This problem | |
2681 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2682 | |
2683 | bv = BLOCKVECTOR (s); | |
2684 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2685 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2686 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2687 | { | |
e2e0b3e5 | 2688 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 2689 | name); |
c906108c SS |
2690 | clear_symtab_users_queued++; |
2691 | make_cleanup (clear_symtab_users_once, 0); | |
2692 | blewit = 1; | |
c5aa993b JM |
2693 | } |
2694 | else | |
e2e0b3e5 AC |
2695 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
2696 | name); | |
c906108c SS |
2697 | |
2698 | free_symtab (s); | |
2699 | } | |
2700 | else | |
2701 | { | |
2702 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2703 | even though no symtab was found, since the file might have |
2704 | been compiled without debugging, and hence not be associated | |
2705 | with a symtab. In order to handle this correctly, we would need | |
2706 | to keep a list of text address ranges for undebuggable files. | |
2707 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2708 | ; |
2709 | } | |
2710 | ||
2711 | /* FIXME, what about the minimal symbol table? */ | |
2712 | return blewit; | |
2713 | #else | |
2714 | return (0); | |
2715 | #endif | |
2716 | } | |
2717 | \f | |
2718 | /* Allocate and partially fill a partial symtab. It will be | |
2719 | completely filled at the end of the symbol list. | |
2720 | ||
d4f3574e | 2721 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2722 | |
2723 | struct partial_symtab * | |
fba45db2 KB |
2724 | start_psymtab_common (struct objfile *objfile, |
2725 | struct section_offsets *section_offsets, char *filename, | |
2726 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2727 | struct partial_symbol **static_syms) | |
c906108c SS |
2728 | { |
2729 | struct partial_symtab *psymtab; | |
2730 | ||
2731 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2732 | psymtab->section_offsets = section_offsets; |
2733 | psymtab->textlow = textlow; | |
2734 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2735 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2736 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2737 | return (psymtab); |
2738 | } | |
2739 | \f | |
2740 | /* Add a symbol with a long value to a psymtab. | |
5417f6dc | 2741 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
2742 | Return the partial symbol that has been added. */ |
2743 | ||
2744 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
2745 | symbol is so that callers can get access to the symbol's demangled | |
2746 | name, which they don't have any cheap way to determine otherwise. | |
2747 | (Currenly, dwarf2read.c is the only file who uses that information, | |
2748 | though it's possible that other readers might in the future.) | |
2749 | Elena wasn't thrilled about that, and I don't blame her, but we | |
2750 | couldn't come up with a better way to get that information. If | |
2751 | it's needed in other situations, we could consider breaking up | |
2752 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
2753 | cache. */ | |
2754 | ||
2755 | const struct partial_symbol * | |
176620f1 | 2756 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 KB |
2757 | enum address_class class, |
2758 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2759 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2760 | enum language language, struct objfile *objfile) | |
c906108c | 2761 | { |
52f0bd74 | 2762 | struct partial_symbol *psym; |
c906108c SS |
2763 | char *buf = alloca (namelength + 1); |
2764 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2765 | structure which might contain random data, causing cache misses in | |
2766 | bcache. */ | |
2767 | static struct partial_symbol psymbol; | |
2768 | ||
2769 | /* Create local copy of the partial symbol */ | |
2770 | memcpy (buf, name, namelength); | |
2771 | buf[namelength] = '\0'; | |
c906108c SS |
2772 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2773 | if (val != 0) | |
2774 | { | |
2775 | SYMBOL_VALUE (&psymbol) = val; | |
2776 | } | |
2777 | else | |
2778 | { | |
2779 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2780 | } | |
2781 | SYMBOL_SECTION (&psymbol) = 0; | |
2782 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2783 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c | 2784 | PSYMBOL_CLASS (&psymbol) = class; |
2de7ced7 DJ |
2785 | |
2786 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
c906108c SS |
2787 | |
2788 | /* Stash the partial symbol away in the cache */ | |
3a16a68c AC |
2789 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), |
2790 | objfile->psymbol_cache); | |
c906108c SS |
2791 | |
2792 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2793 | if (list->next >= list->list + list->size) | |
2794 | { | |
2795 | extend_psymbol_list (list, objfile); | |
2796 | } | |
2797 | *list->next++ = psym; | |
2798 | OBJSTAT (objfile, n_psyms++); | |
5c4e30ca DC |
2799 | |
2800 | return psym; | |
c906108c SS |
2801 | } |
2802 | ||
2803 | /* Add a symbol with a long value to a psymtab. This differs from | |
2804 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2805 | * name. */ | |
2806 | ||
2807 | void | |
fba45db2 | 2808 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
176620f1 | 2809 | int dem_namelength, domain_enum domain, |
fba45db2 KB |
2810 | enum address_class class, |
2811 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2812 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2813 | enum language language, | |
2814 | struct objfile *objfile) | |
c906108c | 2815 | { |
52f0bd74 | 2816 | struct partial_symbol *psym; |
c906108c SS |
2817 | char *buf = alloca (namelength + 1); |
2818 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2819 | structure which might contain random data, causing cache misses in | |
2820 | bcache. */ | |
2821 | static struct partial_symbol psymbol; | |
2822 | ||
2823 | /* Create local copy of the partial symbol */ | |
2824 | ||
2825 | memcpy (buf, name, namelength); | |
2826 | buf[namelength] = '\0'; | |
3a16a68c AC |
2827 | DEPRECATED_SYMBOL_NAME (&psymbol) = deprecated_bcache (buf, namelength + 1, |
2828 | objfile->psymbol_cache); | |
c906108c SS |
2829 | |
2830 | buf = alloca (dem_namelength + 1); | |
2831 | memcpy (buf, dem_name, dem_namelength); | |
2832 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2833 | |
c906108c SS |
2834 | switch (language) |
2835 | { | |
c5aa993b JM |
2836 | case language_c: |
2837 | case language_cplus: | |
2838 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
3a16a68c | 2839 | deprecated_bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2840 | break; |
c906108c SS |
2841 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2842 | } | |
2843 | ||
2844 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2845 | if (val != 0) | |
2846 | { | |
2847 | SYMBOL_VALUE (&psymbol) = val; | |
2848 | } | |
2849 | else | |
2850 | { | |
2851 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2852 | } | |
2853 | SYMBOL_SECTION (&psymbol) = 0; | |
2854 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2855 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c SS |
2856 | PSYMBOL_CLASS (&psymbol) = class; |
2857 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2858 | ||
2859 | /* Stash the partial symbol away in the cache */ | |
3a16a68c AC |
2860 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), |
2861 | objfile->psymbol_cache); | |
c906108c SS |
2862 | |
2863 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2864 | if (list->next >= list->list + list->size) | |
2865 | { | |
2866 | extend_psymbol_list (list, objfile); | |
2867 | } | |
2868 | *list->next++ = psym; | |
2869 | OBJSTAT (objfile, n_psyms++); | |
2870 | } | |
2871 | ||
2872 | /* Initialize storage for partial symbols. */ | |
2873 | ||
2874 | void | |
fba45db2 | 2875 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2876 | { |
2877 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2878 | |
2879 | if (objfile->global_psymbols.list) | |
c906108c | 2880 | { |
2dc74dc1 | 2881 | xfree (objfile->global_psymbols.list); |
c906108c | 2882 | } |
c5aa993b | 2883 | if (objfile->static_psymbols.list) |
c906108c | 2884 | { |
2dc74dc1 | 2885 | xfree (objfile->static_psymbols.list); |
c906108c | 2886 | } |
c5aa993b | 2887 | |
c906108c SS |
2888 | /* Current best guess is that approximately a twentieth |
2889 | of the total symbols (in a debugging file) are global or static | |
2890 | oriented symbols */ | |
c906108c | 2891 | |
c5aa993b JM |
2892 | objfile->global_psymbols.size = total_symbols / 10; |
2893 | objfile->static_psymbols.size = total_symbols / 10; | |
2894 | ||
2895 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2896 | { |
c5aa993b JM |
2897 | objfile->global_psymbols.next = |
2898 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2899 | xmalloc ((objfile->global_psymbols.size |
2900 | * sizeof (struct partial_symbol *))); | |
c906108c | 2901 | } |
c5aa993b | 2902 | if (objfile->static_psymbols.size > 0) |
c906108c | 2903 | { |
c5aa993b JM |
2904 | objfile->static_psymbols.next = |
2905 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2906 | xmalloc ((objfile->static_psymbols.size |
2907 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2908 | } |
2909 | } | |
2910 | ||
2911 | /* OVERLAYS: | |
2912 | The following code implements an abstraction for debugging overlay sections. | |
2913 | ||
2914 | The target model is as follows: | |
2915 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2916 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2917 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2918 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2919 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2920 | sections should be considered to be mapped from the VMA to the LMA. |
2921 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2922 | For instance, if a section has been mapped then its contents |
c5aa993b | 2923 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2924 | |
2925 | Two levels of debugger support for overlays are available. One is | |
2926 | "manual", in which the debugger relies on the user to tell it which | |
2927 | overlays are currently mapped. This level of support is | |
2928 | implemented entirely in the core debugger, and the information about | |
2929 | whether a section is mapped is kept in the objfile->obj_section table. | |
2930 | ||
2931 | The second level of support is "automatic", and is only available if | |
2932 | the target-specific code provides functionality to read the target's | |
2933 | overlay mapping table, and translate its contents for the debugger | |
2934 | (by updating the mapped state information in the obj_section tables). | |
2935 | ||
2936 | The interface is as follows: | |
c5aa993b JM |
2937 | User commands: |
2938 | overlay map <name> -- tell gdb to consider this section mapped | |
2939 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2940 | overlay list -- list the sections that GDB thinks are mapped | |
2941 | overlay read-target -- get the target's state of what's mapped | |
2942 | overlay off/manual/auto -- set overlay debugging state | |
2943 | Functional interface: | |
2944 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2945 | section, return that section. | |
5417f6dc | 2946 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b JM |
2947 | the pc, either in its VMA or its LMA |
2948 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2949 | section_is_overlay(sect): true if section's VMA != LMA | |
2950 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2951 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2952 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2953 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2954 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2955 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2956 | either in VMA or LMA depending on whether | |
2957 | the symbol's section is currently mapped | |
c906108c SS |
2958 | */ |
2959 | ||
2960 | /* Overlay debugging state: */ | |
2961 | ||
d874f1e2 | 2962 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2963 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2964 | ||
2965 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2966 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2967 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2968 | |
2969 | /* Function: section_is_overlay (SECTION) | |
5417f6dc | 2970 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2971 | SECTION is loaded at an address different from where it will "run". */ |
2972 | ||
2973 | int | |
fba45db2 | 2974 | section_is_overlay (asection *section) |
c906108c | 2975 | { |
fbd35540 MS |
2976 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2977 | ||
c906108c SS |
2978 | if (overlay_debugging) |
2979 | if (section && section->lma != 0 && | |
2980 | section->vma != section->lma) | |
2981 | return 1; | |
2982 | ||
2983 | return 0; | |
2984 | } | |
2985 | ||
2986 | /* Function: overlay_invalidate_all (void) | |
2987 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2988 | ||
2989 | static void | |
fba45db2 | 2990 | overlay_invalidate_all (void) |
c906108c | 2991 | { |
c5aa993b | 2992 | struct objfile *objfile; |
c906108c SS |
2993 | struct obj_section *sect; |
2994 | ||
2995 | ALL_OBJSECTIONS (objfile, sect) | |
2996 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2997 | sect->ovly_mapped = -1; |
c906108c SS |
2998 | } |
2999 | ||
3000 | /* Function: overlay_is_mapped (SECTION) | |
5417f6dc | 3001 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3002 | Private: public access is thru function section_is_mapped. |
3003 | ||
3004 | Access to the ovly_mapped flag is restricted to this function, so | |
3005 | that we can do automatic update. If the global flag | |
3006 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3007 | overlay_invalidate_all. If the mapped state of the particular | |
3008 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3009 | ||
c5aa993b | 3010 | static int |
fba45db2 | 3011 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
3012 | { |
3013 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
3014 | return 0; | |
3015 | ||
c5aa993b | 3016 | switch (overlay_debugging) |
c906108c SS |
3017 | { |
3018 | default: | |
d874f1e2 | 3019 | case ovly_off: |
c5aa993b | 3020 | return 0; /* overlay debugging off */ |
d874f1e2 | 3021 | case ovly_auto: /* overlay debugging automatic */ |
5417f6dc | 3022 | /* Unles there is a target_overlay_update function, |
c5aa993b | 3023 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
3024 | if (target_overlay_update) |
3025 | { | |
3026 | if (overlay_cache_invalid) | |
3027 | { | |
3028 | overlay_invalidate_all (); | |
3029 | overlay_cache_invalid = 0; | |
3030 | } | |
3031 | if (osect->ovly_mapped == -1) | |
3032 | (*target_overlay_update) (osect); | |
3033 | } | |
3034 | /* fall thru to manual case */ | |
d874f1e2 | 3035 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3036 | return osect->ovly_mapped == 1; |
3037 | } | |
3038 | } | |
3039 | ||
3040 | /* Function: section_is_mapped | |
3041 | Returns true if section is an overlay, and is currently mapped. */ | |
3042 | ||
3043 | int | |
fba45db2 | 3044 | section_is_mapped (asection *section) |
c906108c | 3045 | { |
c5aa993b | 3046 | struct objfile *objfile; |
c906108c SS |
3047 | struct obj_section *osect; |
3048 | ||
3049 | if (overlay_debugging) | |
3050 | if (section && section_is_overlay (section)) | |
3051 | ALL_OBJSECTIONS (objfile, osect) | |
3052 | if (osect->the_bfd_section == section) | |
c5aa993b | 3053 | return overlay_is_mapped (osect); |
c906108c SS |
3054 | |
3055 | return 0; | |
3056 | } | |
3057 | ||
3058 | /* Function: pc_in_unmapped_range | |
3059 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3060 | ||
3061 | CORE_ADDR | |
fba45db2 | 3062 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3063 | { |
fbd35540 MS |
3064 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3065 | ||
c906108c SS |
3066 | int size; |
3067 | ||
3068 | if (overlay_debugging) | |
3069 | if (section && section_is_overlay (section)) | |
3070 | { | |
2c500098 | 3071 | size = bfd_get_section_size (section); |
c906108c SS |
3072 | if (section->lma <= pc && pc < section->lma + size) |
3073 | return 1; | |
3074 | } | |
3075 | return 0; | |
3076 | } | |
3077 | ||
3078 | /* Function: pc_in_mapped_range | |
3079 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3080 | ||
3081 | CORE_ADDR | |
fba45db2 | 3082 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3083 | { |
fbd35540 MS |
3084 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3085 | ||
c906108c SS |
3086 | int size; |
3087 | ||
3088 | if (overlay_debugging) | |
3089 | if (section && section_is_overlay (section)) | |
3090 | { | |
2c500098 | 3091 | size = bfd_get_section_size (section); |
c906108c SS |
3092 | if (section->vma <= pc && pc < section->vma + size) |
3093 | return 1; | |
3094 | } | |
3095 | return 0; | |
3096 | } | |
3097 | ||
9ec8e6a0 JB |
3098 | |
3099 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3100 | otherwise. */ | |
b9362cc7 | 3101 | static int |
9ec8e6a0 JB |
3102 | sections_overlap (asection *a, asection *b) |
3103 | { | |
fbd35540 MS |
3104 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3105 | ||
9ec8e6a0 | 3106 | CORE_ADDR a_start = a->vma; |
2c500098 | 3107 | CORE_ADDR a_end = a->vma + bfd_get_section_size (a); |
9ec8e6a0 | 3108 | CORE_ADDR b_start = b->vma; |
2c500098 | 3109 | CORE_ADDR b_end = b->vma + bfd_get_section_size (b); |
9ec8e6a0 JB |
3110 | |
3111 | return (a_start < b_end && b_start < a_end); | |
3112 | } | |
3113 | ||
c906108c SS |
3114 | /* Function: overlay_unmapped_address (PC, SECTION) |
3115 | Returns the address corresponding to PC in the unmapped (load) range. | |
3116 | May be the same as PC. */ | |
3117 | ||
3118 | CORE_ADDR | |
fba45db2 | 3119 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3120 | { |
fbd35540 MS |
3121 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3122 | ||
c906108c SS |
3123 | if (overlay_debugging) |
3124 | if (section && section_is_overlay (section) && | |
3125 | pc_in_mapped_range (pc, section)) | |
3126 | return pc + section->lma - section->vma; | |
3127 | ||
3128 | return pc; | |
3129 | } | |
3130 | ||
3131 | /* Function: overlay_mapped_address (PC, SECTION) | |
3132 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3133 | May be the same as PC. */ | |
3134 | ||
3135 | CORE_ADDR | |
fba45db2 | 3136 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3137 | { |
fbd35540 MS |
3138 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3139 | ||
c906108c SS |
3140 | if (overlay_debugging) |
3141 | if (section && section_is_overlay (section) && | |
3142 | pc_in_unmapped_range (pc, section)) | |
3143 | return pc + section->vma - section->lma; | |
3144 | ||
3145 | return pc; | |
3146 | } | |
3147 | ||
3148 | ||
5417f6dc | 3149 | /* Function: symbol_overlayed_address |
c906108c SS |
3150 | Return one of two addresses (relative to the VMA or to the LMA), |
3151 | depending on whether the section is mapped or not. */ | |
3152 | ||
c5aa993b | 3153 | CORE_ADDR |
fba45db2 | 3154 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3155 | { |
3156 | if (overlay_debugging) | |
3157 | { | |
3158 | /* If the symbol has no section, just return its regular address. */ | |
3159 | if (section == 0) | |
3160 | return address; | |
3161 | /* If the symbol's section is not an overlay, just return its address */ | |
3162 | if (!section_is_overlay (section)) | |
3163 | return address; | |
3164 | /* If the symbol's section is mapped, just return its address */ | |
3165 | if (section_is_mapped (section)) | |
3166 | return address; | |
3167 | /* | |
3168 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3169 | * then return its LOADED address rather than its vma address!! | |
3170 | */ | |
3171 | return overlay_unmapped_address (address, section); | |
3172 | } | |
3173 | return address; | |
3174 | } | |
3175 | ||
5417f6dc | 3176 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3177 | Return the best-match overlay section for PC: |
3178 | If PC matches a mapped overlay section's VMA, return that section. | |
3179 | Else if PC matches an unmapped section's VMA, return that section. | |
3180 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3181 | ||
3182 | asection * | |
fba45db2 | 3183 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3184 | { |
c5aa993b | 3185 | struct objfile *objfile; |
c906108c SS |
3186 | struct obj_section *osect, *best_match = NULL; |
3187 | ||
3188 | if (overlay_debugging) | |
3189 | ALL_OBJSECTIONS (objfile, osect) | |
3190 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3191 | { |
3192 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3193 | { | |
3194 | if (overlay_is_mapped (osect)) | |
3195 | return osect->the_bfd_section; | |
3196 | else | |
3197 | best_match = osect; | |
3198 | } | |
3199 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3200 | best_match = osect; | |
3201 | } | |
c906108c SS |
3202 | return best_match ? best_match->the_bfd_section : NULL; |
3203 | } | |
3204 | ||
3205 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3206 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3207 | currently marked as MAPPED, return that section. Else return NULL. */ |
3208 | ||
3209 | asection * | |
fba45db2 | 3210 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3211 | { |
c5aa993b | 3212 | struct objfile *objfile; |
c906108c SS |
3213 | struct obj_section *osect; |
3214 | ||
3215 | if (overlay_debugging) | |
3216 | ALL_OBJSECTIONS (objfile, osect) | |
3217 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3218 | overlay_is_mapped (osect)) | |
c5aa993b | 3219 | return osect->the_bfd_section; |
c906108c SS |
3220 | |
3221 | return NULL; | |
3222 | } | |
3223 | ||
3224 | /* Function: list_overlays_command | |
3225 | Print a list of mapped sections and their PC ranges */ | |
3226 | ||
3227 | void | |
fba45db2 | 3228 | list_overlays_command (char *args, int from_tty) |
c906108c | 3229 | { |
c5aa993b JM |
3230 | int nmapped = 0; |
3231 | struct objfile *objfile; | |
c906108c SS |
3232 | struct obj_section *osect; |
3233 | ||
3234 | if (overlay_debugging) | |
3235 | ALL_OBJSECTIONS (objfile, osect) | |
3236 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3237 | { |
3238 | const char *name; | |
3239 | bfd_vma lma, vma; | |
3240 | int size; | |
3241 | ||
3242 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3243 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3244 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3245 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3246 | ||
3247 | printf_filtered ("Section %s, loaded at ", name); | |
66bf4b3a | 3248 | deprecated_print_address_numeric (lma, 1, gdb_stdout); |
c5aa993b | 3249 | puts_filtered (" - "); |
66bf4b3a | 3250 | deprecated_print_address_numeric (lma + size, 1, gdb_stdout); |
c5aa993b | 3251 | printf_filtered (", mapped at "); |
66bf4b3a | 3252 | deprecated_print_address_numeric (vma, 1, gdb_stdout); |
c5aa993b | 3253 | puts_filtered (" - "); |
66bf4b3a | 3254 | deprecated_print_address_numeric (vma + size, 1, gdb_stdout); |
c5aa993b JM |
3255 | puts_filtered ("\n"); |
3256 | ||
3257 | nmapped++; | |
3258 | } | |
c906108c | 3259 | if (nmapped == 0) |
a3f17187 | 3260 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3261 | } |
3262 | ||
3263 | /* Function: map_overlay_command | |
3264 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3265 | ||
3266 | void | |
fba45db2 | 3267 | map_overlay_command (char *args, int from_tty) |
c906108c | 3268 | { |
c5aa993b JM |
3269 | struct objfile *objfile, *objfile2; |
3270 | struct obj_section *sec, *sec2; | |
3271 | asection *bfdsec; | |
c906108c SS |
3272 | |
3273 | if (!overlay_debugging) | |
8a3fe4f8 | 3274 | error (_("\ |
515ad16c | 3275 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3276 | the 'overlay manual' command.")); |
c906108c SS |
3277 | |
3278 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3279 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3280 | |
3281 | /* First, find a section matching the user supplied argument */ | |
3282 | ALL_OBJSECTIONS (objfile, sec) | |
3283 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3284 | { |
3285 | /* Now, check to see if the section is an overlay. */ | |
3286 | bfdsec = sec->the_bfd_section; | |
3287 | if (!section_is_overlay (bfdsec)) | |
3288 | continue; /* not an overlay section */ | |
3289 | ||
3290 | /* Mark the overlay as "mapped" */ | |
3291 | sec->ovly_mapped = 1; | |
3292 | ||
3293 | /* Next, make a pass and unmap any sections that are | |
3294 | overlapped by this new section: */ | |
3295 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3296 | if (sec2->ovly_mapped |
3297 | && sec != sec2 | |
3298 | && sec->the_bfd_section != sec2->the_bfd_section | |
3299 | && sections_overlap (sec->the_bfd_section, | |
3300 | sec2->the_bfd_section)) | |
c5aa993b JM |
3301 | { |
3302 | if (info_verbose) | |
a3f17187 | 3303 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3304 | bfd_section_name (objfile->obfd, |
3305 | sec2->the_bfd_section)); | |
3306 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3307 | } | |
3308 | return; | |
3309 | } | |
8a3fe4f8 | 3310 | error (_("No overlay section called %s"), args); |
c906108c SS |
3311 | } |
3312 | ||
3313 | /* Function: unmap_overlay_command | |
5417f6dc | 3314 | Mark the overlay section as unmapped |
c906108c SS |
3315 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3316 | ||
3317 | void | |
fba45db2 | 3318 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3319 | { |
c5aa993b | 3320 | struct objfile *objfile; |
c906108c SS |
3321 | struct obj_section *sec; |
3322 | ||
3323 | if (!overlay_debugging) | |
8a3fe4f8 | 3324 | error (_("\ |
515ad16c | 3325 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3326 | the 'overlay manual' command.")); |
c906108c SS |
3327 | |
3328 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3329 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3330 | |
3331 | /* First, find a section matching the user supplied argument */ | |
3332 | ALL_OBJSECTIONS (objfile, sec) | |
3333 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3334 | { |
3335 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3336 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3337 | sec->ovly_mapped = 0; |
3338 | return; | |
3339 | } | |
8a3fe4f8 | 3340 | error (_("No overlay section called %s"), args); |
c906108c SS |
3341 | } |
3342 | ||
3343 | /* Function: overlay_auto_command | |
3344 | A utility command to turn on overlay debugging. | |
3345 | Possibly this should be done via a set/show command. */ | |
3346 | ||
3347 | static void | |
fba45db2 | 3348 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3349 | { |
d874f1e2 | 3350 | overlay_debugging = ovly_auto; |
1900040c | 3351 | enable_overlay_breakpoints (); |
c906108c | 3352 | if (info_verbose) |
a3f17187 | 3353 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3354 | } |
3355 | ||
3356 | /* Function: overlay_manual_command | |
3357 | A utility command to turn on overlay debugging. | |
3358 | Possibly this should be done via a set/show command. */ | |
3359 | ||
3360 | static void | |
fba45db2 | 3361 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3362 | { |
d874f1e2 | 3363 | overlay_debugging = ovly_on; |
1900040c | 3364 | disable_overlay_breakpoints (); |
c906108c | 3365 | if (info_verbose) |
a3f17187 | 3366 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3367 | } |
3368 | ||
3369 | /* Function: overlay_off_command | |
3370 | A utility command to turn on overlay debugging. | |
3371 | Possibly this should be done via a set/show command. */ | |
3372 | ||
3373 | static void | |
fba45db2 | 3374 | overlay_off_command (char *args, int from_tty) |
c906108c | 3375 | { |
d874f1e2 | 3376 | overlay_debugging = ovly_off; |
1900040c | 3377 | disable_overlay_breakpoints (); |
c906108c | 3378 | if (info_verbose) |
a3f17187 | 3379 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3380 | } |
3381 | ||
3382 | static void | |
fba45db2 | 3383 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
3384 | { |
3385 | if (target_overlay_update) | |
3386 | (*target_overlay_update) (NULL); | |
3387 | else | |
8a3fe4f8 | 3388 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3389 | } |
3390 | ||
3391 | /* Function: overlay_command | |
3392 | A place-holder for a mis-typed command */ | |
3393 | ||
3394 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3395 | struct cmd_list_element *overlaylist; | |
3396 | ||
3397 | static void | |
fba45db2 | 3398 | overlay_command (char *args, int from_tty) |
c906108c | 3399 | { |
c5aa993b | 3400 | printf_unfiltered |
c906108c SS |
3401 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3402 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3403 | } | |
3404 | ||
3405 | ||
3406 | /* Target Overlays for the "Simplest" overlay manager: | |
3407 | ||
5417f6dc RM |
3408 | This is GDB's default target overlay layer. It works with the |
3409 | minimal overlay manager supplied as an example by Cygnus. The | |
3410 | entry point is via a function pointer "target_overlay_update", | |
3411 | so targets that use a different runtime overlay manager can | |
c906108c SS |
3412 | substitute their own overlay_update function and take over the |
3413 | function pointer. | |
3414 | ||
3415 | The overlay_update function pokes around in the target's data structures | |
3416 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3417 | this information. | |
3418 | ||
3419 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3420 | unsigned _novlys; /# number of overlay sections #/ |
3421 | unsigned _ovly_table[_novlys][4] = { | |
3422 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3423 | {..., ..., ..., ...}, | |
3424 | } | |
3425 | unsigned _novly_regions; /# number of overlay regions #/ | |
3426 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3427 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3428 | {..., ..., ...}, | |
3429 | } | |
c906108c SS |
3430 | These functions will attempt to update GDB's mappedness state in the |
3431 | symbol section table, based on the target's mappedness state. | |
3432 | ||
3433 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3434 | attempt to detect when the cached copy is invalidated. The main | |
3435 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3436 | the cached table and re-reads only the entry for that section from | |
3437 | the target (whenever possible). | |
3438 | */ | |
3439 | ||
3440 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3441 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3442 | #if 0 |
c5aa993b | 3443 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3444 | #endif |
c5aa993b | 3445 | static unsigned cache_novlys = 0; |
c906108c | 3446 | #if 0 |
c5aa993b | 3447 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3448 | #endif |
3449 | static CORE_ADDR cache_ovly_table_base = 0; | |
3450 | #if 0 | |
3451 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3452 | #endif | |
c5aa993b JM |
3453 | enum ovly_index |
3454 | { | |
3455 | VMA, SIZE, LMA, MAPPED | |
3456 | }; | |
c906108c SS |
3457 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3458 | ||
3459 | /* Throw away the cached copy of _ovly_table */ | |
3460 | static void | |
fba45db2 | 3461 | simple_free_overlay_table (void) |
c906108c SS |
3462 | { |
3463 | if (cache_ovly_table) | |
b8c9b27d | 3464 | xfree (cache_ovly_table); |
c5aa993b | 3465 | cache_novlys = 0; |
c906108c SS |
3466 | cache_ovly_table = NULL; |
3467 | cache_ovly_table_base = 0; | |
3468 | } | |
3469 | ||
3470 | #if 0 | |
3471 | /* Throw away the cached copy of _ovly_region_table */ | |
3472 | static void | |
fba45db2 | 3473 | simple_free_overlay_region_table (void) |
c906108c SS |
3474 | { |
3475 | if (cache_ovly_region_table) | |
b8c9b27d | 3476 | xfree (cache_ovly_region_table); |
c5aa993b | 3477 | cache_novly_regions = 0; |
c906108c SS |
3478 | cache_ovly_region_table = NULL; |
3479 | cache_ovly_region_table_base = 0; | |
3480 | } | |
3481 | #endif | |
3482 | ||
3483 | /* Read an array of ints from the target into a local buffer. | |
3484 | Convert to host order. int LEN is number of ints */ | |
3485 | static void | |
fba45db2 | 3486 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3487 | { |
34c0bd93 | 3488 | /* FIXME (alloca): Not safe if array is very large. */ |
777ea8f1 | 3489 | gdb_byte *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3490 | int i; |
c906108c SS |
3491 | |
3492 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3493 | for (i = 0; i < len; i++) | |
c5aa993b | 3494 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3495 | TARGET_LONG_BYTES); |
3496 | } | |
3497 | ||
3498 | /* Find and grab a copy of the target _ovly_table | |
3499 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3500 | static int |
fba45db2 | 3501 | simple_read_overlay_table (void) |
c906108c | 3502 | { |
0d43edd1 | 3503 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3504 | |
3505 | simple_free_overlay_table (); | |
9b27852e | 3506 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3507 | if (! novlys_msym) |
c906108c | 3508 | { |
8a3fe4f8 | 3509 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3510 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3511 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3512 | return 0; |
c906108c | 3513 | } |
0d43edd1 | 3514 | |
9b27852e | 3515 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3516 | if (! ovly_table_msym) |
3517 | { | |
8a3fe4f8 | 3518 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3519 | "`_ovly_table' array\n" |
8a3fe4f8 | 3520 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3521 | return 0; |
3522 | } | |
3523 | ||
3524 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3525 | cache_ovly_table | |
3526 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3527 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3528 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3529 | (unsigned int *) cache_ovly_table, |
0d43edd1 JB |
3530 | cache_novlys * 4); |
3531 | ||
c5aa993b | 3532 | return 1; /* SUCCESS */ |
c906108c SS |
3533 | } |
3534 | ||
3535 | #if 0 | |
3536 | /* Find and grab a copy of the target _ovly_region_table | |
3537 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3538 | static int |
fba45db2 | 3539 | simple_read_overlay_region_table (void) |
c906108c SS |
3540 | { |
3541 | struct minimal_symbol *msym; | |
3542 | ||
3543 | simple_free_overlay_region_table (); | |
9b27852e | 3544 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3545 | if (msym != NULL) |
3546 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3547 | else |
3548 | return 0; /* failure */ | |
c906108c SS |
3549 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3550 | if (cache_ovly_region_table != NULL) | |
3551 | { | |
9b27852e | 3552 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3553 | if (msym != NULL) |
3554 | { | |
3555 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3556 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3557 | (unsigned int *) cache_ovly_region_table, |
c906108c SS |
3558 | cache_novly_regions * 3); |
3559 | } | |
c5aa993b JM |
3560 | else |
3561 | return 0; /* failure */ | |
c906108c | 3562 | } |
c5aa993b JM |
3563 | else |
3564 | return 0; /* failure */ | |
3565 | return 1; /* SUCCESS */ | |
c906108c SS |
3566 | } |
3567 | #endif | |
3568 | ||
5417f6dc | 3569 | /* Function: simple_overlay_update_1 |
c906108c SS |
3570 | A helper function for simple_overlay_update. Assuming a cached copy |
3571 | of _ovly_table exists, look through it to find an entry whose vma, | |
3572 | lma and size match those of OSECT. Re-read the entry and make sure | |
3573 | it still matches OSECT (else the table may no longer be valid). | |
3574 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3575 | success, 0 for failure. */ | |
3576 | ||
3577 | static int | |
fba45db2 | 3578 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3579 | { |
3580 | int i, size; | |
fbd35540 MS |
3581 | bfd *obfd = osect->objfile->obfd; |
3582 | asection *bsect = osect->the_bfd_section; | |
c906108c | 3583 | |
2c500098 | 3584 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3585 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3586 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3587 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3588 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3589 | { |
3590 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
777ea8f1 | 3591 | (unsigned int *) cache_ovly_table[i], 4); |
fbd35540 MS |
3592 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3593 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3594 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3595 | { |
3596 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3597 | return 1; | |
3598 | } | |
fbd35540 | 3599 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3600 | return 0; |
3601 | } | |
3602 | return 0; | |
3603 | } | |
3604 | ||
3605 | /* Function: simple_overlay_update | |
5417f6dc RM |
3606 | If OSECT is NULL, then update all sections' mapped state |
3607 | (after re-reading the entire target _ovly_table). | |
3608 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3609 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3610 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3611 | re-read the entire cache, and go ahead and update all sections. */ |
3612 | ||
3613 | static void | |
fba45db2 | 3614 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3615 | { |
c5aa993b | 3616 | struct objfile *objfile; |
c906108c SS |
3617 | |
3618 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3619 | if (osect) | |
3620 | /* Have we got a cached copy of the target's overlay table? */ | |
3621 | if (cache_ovly_table != NULL) | |
3622 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3623 | if (cache_ovly_table_base == |
9b27852e | 3624 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3625 | /* Then go ahead and try to look up this single section in the cache */ |
3626 | if (simple_overlay_update_1 (osect)) | |
3627 | /* Found it! We're done. */ | |
3628 | return; | |
3629 | ||
3630 | /* Cached table no good: need to read the entire table anew. | |
3631 | Or else we want all the sections, in which case it's actually | |
3632 | more efficient to read the whole table in one block anyway. */ | |
3633 | ||
0d43edd1 JB |
3634 | if (! simple_read_overlay_table ()) |
3635 | return; | |
3636 | ||
c906108c SS |
3637 | /* Now may as well update all sections, even if only one was requested. */ |
3638 | ALL_OBJSECTIONS (objfile, osect) | |
3639 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3640 | { |
3641 | int i, size; | |
fbd35540 MS |
3642 | bfd *obfd = osect->objfile->obfd; |
3643 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3644 | |
2c500098 | 3645 | size = bfd_get_section_size (bsect); |
c5aa993b | 3646 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3647 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3648 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3649 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3650 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3651 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3652 | break; /* finished with inner for loop: break out */ | |
3653 | } | |
3654 | } | |
c906108c SS |
3655 | } |
3656 | ||
086df311 DJ |
3657 | /* Set the output sections and output offsets for section SECTP in |
3658 | ABFD. The relocation code in BFD will read these offsets, so we | |
3659 | need to be sure they're initialized. We map each section to itself, | |
3660 | with no offset; this means that SECTP->vma will be honored. */ | |
3661 | ||
3662 | static void | |
3663 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3664 | { | |
3665 | sectp->output_section = sectp; | |
3666 | sectp->output_offset = 0; | |
3667 | } | |
3668 | ||
3669 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3670 | contents are stored in BUF if it is non-NULL, or returned in a | |
3671 | malloc'd buffer otherwise. | |
3672 | ||
3673 | For some platforms and debug info formats, shared libraries contain | |
3674 | relocations against the debug sections (particularly for DWARF-2; | |
3675 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3676 | the version of the linker in use). Also, ELF object files naturally | |
3677 | have unresolved relocations for their debug sections. We need to apply | |
3678 | the relocations in order to get the locations of symbols correct. */ | |
3679 | ||
3680 | bfd_byte * | |
3681 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3682 | { | |
3683 | /* We're only interested in debugging sections with relocation | |
3684 | information. */ | |
3685 | if ((sectp->flags & SEC_RELOC) == 0) | |
3686 | return NULL; | |
3687 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3688 | return NULL; | |
3689 | ||
3690 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3691 | all sections begin at 0. */ | |
3692 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3693 | ||
97606a13 | 3694 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3695 | } |
c906108c SS |
3696 | |
3697 | void | |
fba45db2 | 3698 | _initialize_symfile (void) |
c906108c SS |
3699 | { |
3700 | struct cmd_list_element *c; | |
c5aa993b | 3701 | |
1a966eab AC |
3702 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3703 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3704 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3705 | to execute."), &cmdlist); |
5ba2abeb | 3706 | set_cmd_completer (c, filename_completer); |
c906108c | 3707 | |
1a966eab AC |
3708 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
3709 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ | |
c906108c | 3710 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3711 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3712 | The optional arguments are section-name section-address pairs and\n\ |
3713 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3714 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3715 | &cmdlist); |
5ba2abeb | 3716 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3717 | |
3718 | c = add_cmd ("add-shared-symbol-files", class_files, | |
1a966eab AC |
3719 | add_shared_symbol_files_command, _("\ |
3720 | Load the symbols from shared objects in the dynamic linker's link map."), | |
c5aa993b | 3721 | &cmdlist); |
c906108c SS |
3722 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3723 | &cmdlist); | |
3724 | ||
1a966eab AC |
3725 | c = add_cmd ("load", class_files, load_command, _("\ |
3726 | Dynamically load FILE into the running program, and record its symbols\n\ | |
3727 | for access from GDB."), &cmdlist); | |
5ba2abeb | 3728 | set_cmd_completer (c, filename_completer); |
c906108c | 3729 | |
5bf193a2 AC |
3730 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3731 | &symbol_reloading, _("\ | |
3732 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3733 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3734 | NULL, | |
920d2a44 | 3735 | show_symbol_reloading, |
5bf193a2 | 3736 | &setlist, &showlist); |
c906108c | 3737 | |
c5aa993b | 3738 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3739 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3740 | "overlay ", 0, &cmdlist); |
3741 | ||
3742 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3743 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3744 | ||
c5aa993b | 3745 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3746 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3747 | |
c5aa993b | 3748 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3749 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3750 | |
c5aa993b | 3751 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3752 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3753 | |
c5aa993b | 3754 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3755 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3756 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3757 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3758 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3759 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3760 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3761 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3762 | |
3763 | /* Filename extension to source language lookup table: */ | |
3764 | init_filename_language_table (); | |
26c41df3 AC |
3765 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3766 | &ext_args, _("\ | |
3767 | Set mapping between filename extension and source language."), _("\ | |
3768 | Show mapping between filename extension and source language."), _("\ | |
3769 | Usage: set extension-language .foo bar"), | |
3770 | set_ext_lang_command, | |
920d2a44 | 3771 | show_ext_args, |
26c41df3 | 3772 | &setlist, &showlist); |
c906108c | 3773 | |
c5aa993b | 3774 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3775 | _("All filename extensions associated with a source language.")); |
917317f4 | 3776 | |
4d28ad1e AC |
3777 | add_setshow_integer_cmd ("download-write-size", class_obscure, |
3778 | &download_write_size, _("\ | |
3779 | Set the write size used when downloading a program."), _("\ | |
3780 | Show the write size used when downloading a program."), _("\ | |
3781 | Only used when downloading a program onto a remote\n\ | |
3782 | target. Specify zero, or a negative value, to disable\n\ | |
3783 | blocked writes. The actual size of each transfer is also\n\ | |
3784 | limited by the size of the target packet and the memory\n\ | |
3785 | cache."), | |
3786 | NULL, | |
920d2a44 | 3787 | show_download_write_size, |
4d28ad1e | 3788 | &setlist, &showlist); |
5b5d99cf JB |
3789 | |
3790 | debug_file_directory = xstrdup (DEBUGDIR); | |
525226b5 AC |
3791 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3792 | &debug_file_directory, _("\ | |
3793 | Set the directory where separate debug symbols are searched for."), _("\ | |
3794 | Show the directory where separate debug symbols are searched for."), _("\ | |
3795 | Separate debug symbols are first searched for in the same\n\ | |
3796 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3797 | and lastly at the path of the directory of the binary with\n\ | |
3798 | the global debug-file directory prepended."), | |
3799 | NULL, | |
920d2a44 | 3800 | show_debug_file_directory, |
525226b5 | 3801 | &setlist, &showlist); |
c906108c | 3802 | } |