Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
0fb0cc75 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 |
777ea8f1 | 5 | Free Software Foundation, Inc. |
8926118c | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support, using pieces from other GDB modules. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
e17c207e | 25 | #include "arch-utils.h" |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
fb14de7b UW |
41 | #include "inferior.h" |
42 | #include "regcache.h" | |
5b5d99cf | 43 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 44 | #include "gdb-stabs.h" |
04ea0df1 | 45 | #include "gdb_obstack.h" |
d75b5104 | 46 | #include "completer.h" |
af5f3db6 | 47 | #include "bcache.h" |
2de7ced7 | 48 | #include "hashtab.h" |
dbda9972 | 49 | #include "readline/readline.h" |
7e8580c1 | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
ea53e89f | 52 | #include "observer.h" |
c1bd25fd | 53 | #include "exec.h" |
9bdcbae7 | 54 | #include "parser-defs.h" |
8756216b | 55 | #include "varobj.h" |
77069918 | 56 | #include "elf-bfd.h" |
e85a822c | 57 | #include "solib.h" |
f1838a98 | 58 | #include "remote.h" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include <time.h> | |
2b71414d | 66 | #include <sys/time.h> |
c906108c | 67 | |
c906108c | 68 | |
9a4105ab AC |
69 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
70 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
71 | unsigned long section_sent, |
72 | unsigned long section_size, | |
73 | unsigned long total_sent, | |
c2d11a7d | 74 | unsigned long total_size); |
769d7dc4 AC |
75 | void (*deprecated_pre_add_symbol_hook) (const char *); |
76 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 77 | |
74b7792f AC |
78 | static void clear_symtab_users_cleanup (void *ignore); |
79 | ||
c906108c | 80 | /* Global variables owned by this file */ |
c5aa993b | 81 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 82 | |
c906108c SS |
83 | /* External variables and functions referenced. */ |
84 | ||
a14ed312 | 85 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
86 | |
87 | /* Functions this file defines */ | |
88 | ||
89 | #if 0 | |
a14ed312 KB |
90 | static int simple_read_overlay_region_table (void); |
91 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
92 | #endif |
93 | ||
a14ed312 | 94 | static void load_command (char *, int); |
c906108c | 95 | |
d7db6da9 FN |
96 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
97 | ||
a14ed312 | 98 | static void add_symbol_file_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 101 | |
a14ed312 | 102 | bfd *symfile_bfd_open (char *); |
c906108c | 103 | |
0e931cf0 JB |
104 | int get_section_index (struct objfile *, char *); |
105 | ||
31d99776 | 106 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 107 | |
a14ed312 | 108 | static void decrement_reading_symtab (void *); |
c906108c | 109 | |
a14ed312 | 110 | static void overlay_invalidate_all (void); |
c906108c | 111 | |
a14ed312 | 112 | void list_overlays_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | void map_overlay_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | void unmap_overlay_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void overlay_auto_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_manual_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_off_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_load_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void overlay_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void simple_free_overlay_table (void); |
c906108c | 129 | |
e17a4113 UW |
130 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
131 | enum bfd_endian); | |
c906108c | 132 | |
a14ed312 | 133 | static int simple_read_overlay_table (void); |
c906108c | 134 | |
a14ed312 | 135 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 136 | |
a14ed312 | 137 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 138 | |
a14ed312 | 139 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 140 | |
a14ed312 | 141 | static void init_filename_language_table (void); |
392a587b | 142 | |
31d99776 DJ |
143 | static void symfile_find_segment_sections (struct objfile *objfile); |
144 | ||
a14ed312 | 145 | void _initialize_symfile (void); |
c906108c SS |
146 | |
147 | /* List of all available sym_fns. On gdb startup, each object file reader | |
148 | calls add_symtab_fns() to register information on each format it is | |
149 | prepared to read. */ | |
150 | ||
151 | static struct sym_fns *symtab_fns = NULL; | |
152 | ||
153 | /* Flag for whether user will be reloading symbols multiple times. | |
154 | Defaults to ON for VxWorks, otherwise OFF. */ | |
155 | ||
156 | #ifdef SYMBOL_RELOADING_DEFAULT | |
157 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
158 | #else | |
159 | int symbol_reloading = 0; | |
160 | #endif | |
920d2a44 AC |
161 | static void |
162 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
163 | struct cmd_list_element *c, const char *value) | |
164 | { | |
165 | fprintf_filtered (file, _("\ | |
166 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
167 | value); | |
168 | } | |
169 | ||
b7209cb4 FF |
170 | /* If non-zero, shared library symbols will be added automatically |
171 | when the inferior is created, new libraries are loaded, or when | |
172 | attaching to the inferior. This is almost always what users will | |
173 | want to have happen; but for very large programs, the startup time | |
174 | will be excessive, and so if this is a problem, the user can clear | |
175 | this flag and then add the shared library symbols as needed. Note | |
176 | that there is a potential for confusion, since if the shared | |
c906108c | 177 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 178 | report all the functions that are actually present. */ |
c906108c SS |
179 | |
180 | int auto_solib_add = 1; | |
b7209cb4 FF |
181 | |
182 | /* For systems that support it, a threshold size in megabytes. If | |
183 | automatically adding a new library's symbol table to those already | |
184 | known to the debugger would cause the total shared library symbol | |
185 | size to exceed this threshhold, then the shlib's symbols are not | |
186 | added. The threshold is ignored if the user explicitly asks for a | |
187 | shlib to be added, such as when using the "sharedlibrary" | |
188 | command. */ | |
189 | ||
190 | int auto_solib_limit; | |
c906108c | 191 | \f |
c5aa993b | 192 | |
0fe19209 DC |
193 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
194 | for the comparison. */ | |
c906108c SS |
195 | |
196 | static int | |
0cd64fe2 | 197 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 198 | { |
0fe19209 DC |
199 | struct partial_symbol *const *s1 = s1p; |
200 | struct partial_symbol *const *s2 = s2p; | |
201 | ||
4725b721 PH |
202 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
203 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
204 | } |
205 | ||
206 | void | |
fba45db2 | 207 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
208 | { |
209 | /* Sort the global list; don't sort the static list */ | |
210 | ||
c5aa993b JM |
211 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
212 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
213 | compare_psymbols); |
214 | } | |
215 | ||
c906108c SS |
216 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
217 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
218 | Note that the string at PTR does not have to be null terminated, I.E. it | |
219 | may be part of a larger string and we are only saving a substring. */ | |
220 | ||
221 | char * | |
63ca651f | 222 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 223 | { |
52f0bd74 | 224 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
225 | /* Open-coded memcpy--saves function call time. These strings are usually |
226 | short. FIXME: Is this really still true with a compiler that can | |
227 | inline memcpy? */ | |
228 | { | |
aa1ee363 AC |
229 | const char *p1 = ptr; |
230 | char *p2 = p; | |
63ca651f | 231 | const char *end = ptr + size; |
c906108c SS |
232 | while (p1 != end) |
233 | *p2++ = *p1++; | |
234 | } | |
235 | p[size] = 0; | |
236 | return p; | |
237 | } | |
238 | ||
239 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
240 | in the obstack pointed to by OBSTACKP. */ | |
241 | ||
242 | char * | |
fba45db2 KB |
243 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
244 | const char *s3) | |
c906108c | 245 | { |
52f0bd74 AC |
246 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
247 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
248 | strcpy (val, s1); |
249 | strcat (val, s2); | |
250 | strcat (val, s3); | |
251 | return val; | |
252 | } | |
253 | ||
254 | /* True if we are nested inside psymtab_to_symtab. */ | |
255 | ||
256 | int currently_reading_symtab = 0; | |
257 | ||
258 | static void | |
fba45db2 | 259 | decrement_reading_symtab (void *dummy) |
c906108c SS |
260 | { |
261 | currently_reading_symtab--; | |
262 | } | |
263 | ||
264 | /* Get the symbol table that corresponds to a partial_symtab. | |
265 | This is fast after the first time you do it. In fact, there | |
266 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
267 | case inline. */ | |
268 | ||
269 | struct symtab * | |
aa1ee363 | 270 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
271 | { |
272 | /* If it's been looked up before, return it. */ | |
273 | if (pst->symtab) | |
274 | return pst->symtab; | |
275 | ||
276 | /* If it has not yet been read in, read it. */ | |
277 | if (!pst->readin) | |
c5aa993b | 278 | { |
c906108c SS |
279 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
280 | currently_reading_symtab++; | |
281 | (*pst->read_symtab) (pst); | |
282 | do_cleanups (back_to); | |
283 | } | |
284 | ||
285 | return pst->symtab; | |
286 | } | |
287 | ||
5417f6dc RM |
288 | /* Remember the lowest-addressed loadable section we've seen. |
289 | This function is called via bfd_map_over_sections. | |
c906108c SS |
290 | |
291 | In case of equal vmas, the section with the largest size becomes the | |
292 | lowest-addressed loadable section. | |
293 | ||
294 | If the vmas and sizes are equal, the last section is considered the | |
295 | lowest-addressed loadable section. */ | |
296 | ||
297 | void | |
4efb68b1 | 298 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 299 | { |
c5aa993b | 300 | asection **lowest = (asection **) obj; |
c906108c SS |
301 | |
302 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
303 | return; | |
304 | if (!*lowest) | |
305 | *lowest = sect; /* First loadable section */ | |
306 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
307 | *lowest = sect; /* A lower loadable section */ | |
308 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
309 | && (bfd_section_size (abfd, (*lowest)) | |
310 | <= bfd_section_size (abfd, sect))) | |
311 | *lowest = sect; | |
312 | } | |
313 | ||
a39a16c4 MM |
314 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
315 | ||
316 | struct section_addr_info * | |
317 | alloc_section_addr_info (size_t num_sections) | |
318 | { | |
319 | struct section_addr_info *sap; | |
320 | size_t size; | |
321 | ||
322 | size = (sizeof (struct section_addr_info) | |
323 | + sizeof (struct other_sections) * (num_sections - 1)); | |
324 | sap = (struct section_addr_info *) xmalloc (size); | |
325 | memset (sap, 0, size); | |
326 | sap->num_sections = num_sections; | |
327 | ||
328 | return sap; | |
329 | } | |
62557bbc | 330 | |
7b90c3f9 JB |
331 | |
332 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
333 | any, are also freshly allocated copies of those in ADDRS. */ | |
334 | struct section_addr_info * | |
335 | copy_section_addr_info (struct section_addr_info *addrs) | |
336 | { | |
337 | struct section_addr_info *copy | |
338 | = alloc_section_addr_info (addrs->num_sections); | |
339 | int i; | |
340 | ||
341 | copy->num_sections = addrs->num_sections; | |
342 | for (i = 0; i < addrs->num_sections; i++) | |
343 | { | |
344 | copy->other[i].addr = addrs->other[i].addr; | |
345 | if (addrs->other[i].name) | |
346 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
347 | else | |
348 | copy->other[i].name = NULL; | |
349 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
350 | } | |
351 | ||
352 | return copy; | |
353 | } | |
354 | ||
355 | ||
356 | ||
62557bbc KB |
357 | /* Build (allocate and populate) a section_addr_info struct from |
358 | an existing section table. */ | |
359 | ||
360 | extern struct section_addr_info * | |
0542c86d PA |
361 | build_section_addr_info_from_section_table (const struct target_section *start, |
362 | const struct target_section *end) | |
62557bbc KB |
363 | { |
364 | struct section_addr_info *sap; | |
0542c86d | 365 | const struct target_section *stp; |
62557bbc KB |
366 | int oidx; |
367 | ||
a39a16c4 | 368 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
369 | |
370 | for (stp = start, oidx = 0; stp != end; stp++) | |
371 | { | |
5417f6dc | 372 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 373 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 374 | && oidx < end - start) |
62557bbc KB |
375 | { |
376 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 377 | sap->other[oidx].name |
fbd35540 | 378 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
379 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
380 | oidx++; | |
381 | } | |
382 | } | |
383 | ||
384 | return sap; | |
385 | } | |
386 | ||
387 | ||
388 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
389 | ||
390 | extern void | |
391 | free_section_addr_info (struct section_addr_info *sap) | |
392 | { | |
393 | int idx; | |
394 | ||
a39a16c4 | 395 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 396 | if (sap->other[idx].name) |
b8c9b27d KB |
397 | xfree (sap->other[idx].name); |
398 | xfree (sap); | |
62557bbc KB |
399 | } |
400 | ||
401 | ||
e8289572 JB |
402 | /* Initialize OBJFILE's sect_index_* members. */ |
403 | static void | |
404 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 405 | { |
e8289572 | 406 | asection *sect; |
c906108c | 407 | int i; |
5417f6dc | 408 | |
b8fbeb18 | 409 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 410 | if (sect) |
b8fbeb18 EZ |
411 | objfile->sect_index_text = sect->index; |
412 | ||
413 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 414 | if (sect) |
b8fbeb18 EZ |
415 | objfile->sect_index_data = sect->index; |
416 | ||
417 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 418 | if (sect) |
b8fbeb18 EZ |
419 | objfile->sect_index_bss = sect->index; |
420 | ||
421 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 422 | if (sect) |
b8fbeb18 EZ |
423 | objfile->sect_index_rodata = sect->index; |
424 | ||
bbcd32ad FF |
425 | /* This is where things get really weird... We MUST have valid |
426 | indices for the various sect_index_* members or gdb will abort. | |
427 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
428 | accomodate that. First, check for a file with the standard |
429 | one or two segments. */ | |
430 | ||
431 | symfile_find_segment_sections (objfile); | |
432 | ||
433 | /* Except when explicitly adding symbol files at some address, | |
434 | section_offsets contains nothing but zeros, so it doesn't matter | |
435 | which slot in section_offsets the individual sect_index_* members | |
436 | index into. So if they are all zero, it is safe to just point | |
437 | all the currently uninitialized indices to the first slot. But | |
438 | beware: if this is the main executable, it may be relocated | |
439 | later, e.g. by the remote qOffsets packet, and then this will | |
440 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
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 | ||
2c0b251b | 473 | static void |
c1bd25fd DJ |
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 | 480 | |
2711e456 DJ |
481 | /* We are only interested in allocated sections. */ |
482 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
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 | ||
2711e456 DJ |
506 | /* We can only conflict with allocated sections. */ |
507 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
508 | continue; |
509 | ||
510 | /* If the section offset is 0, either the section has not been placed | |
511 | yet, or it was the lowest section placed (in which case LOWEST | |
512 | will be past its end). */ | |
513 | if (offsets[indx] == 0) | |
514 | continue; | |
515 | ||
516 | /* If this section would overlap us, then we must move up. */ | |
517 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
518 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
519 | { | |
520 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
521 | start_addr = (start_addr + align - 1) & -align; | |
522 | done = 0; | |
3bd72c6f | 523 | break; |
c1bd25fd DJ |
524 | } |
525 | ||
526 | /* Otherwise, we appear to be OK. So far. */ | |
527 | } | |
528 | } | |
529 | while (!done); | |
530 | ||
531 | offsets[sect->index] = start_addr; | |
532 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 533 | } |
e8289572 JB |
534 | |
535 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 536 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
537 | version of the sym_fns.sym_offsets function for symbol readers that |
538 | don't need to do anything special. It allocates a section_offsets table | |
539 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
540 | ||
541 | void | |
542 | default_symfile_offsets (struct objfile *objfile, | |
543 | struct section_addr_info *addrs) | |
544 | { | |
545 | int i; | |
546 | ||
a39a16c4 | 547 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 548 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 549 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 550 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 551 | memset (objfile->section_offsets, 0, |
a39a16c4 | 552 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
553 | |
554 | /* Now calculate offsets for section that were specified by the | |
555 | caller. */ | |
a39a16c4 | 556 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
557 | { |
558 | struct other_sections *osp ; | |
559 | ||
560 | osp = &addrs->other[i] ; | |
561 | if (osp->addr == 0) | |
562 | continue; | |
563 | ||
564 | /* Record all sections in offsets */ | |
565 | /* The section_offsets in the objfile are here filled in using | |
566 | the BFD index. */ | |
567 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
568 | } | |
569 | ||
c1bd25fd DJ |
570 | /* For relocatable files, all loadable sections will start at zero. |
571 | The zero is meaningless, so try to pick arbitrary addresses such | |
572 | that no loadable sections overlap. This algorithm is quadratic, | |
573 | but the number of sections in a single object file is generally | |
574 | small. */ | |
575 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
576 | { | |
577 | struct place_section_arg arg; | |
2711e456 DJ |
578 | bfd *abfd = objfile->obfd; |
579 | asection *cur_sec; | |
580 | CORE_ADDR lowest = 0; | |
581 | ||
582 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
583 | /* We do not expect this to happen; just skip this step if the | |
584 | relocatable file has a section with an assigned VMA. */ | |
585 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
586 | break; | |
587 | ||
588 | if (cur_sec == NULL) | |
589 | { | |
590 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
591 | ||
592 | /* Pick non-overlapping offsets for sections the user did not | |
593 | place explicitly. */ | |
594 | arg.offsets = objfile->section_offsets; | |
595 | arg.lowest = 0; | |
596 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
597 | ||
598 | /* Correctly filling in the section offsets is not quite | |
599 | enough. Relocatable files have two properties that | |
600 | (most) shared objects do not: | |
601 | ||
602 | - Their debug information will contain relocations. Some | |
603 | shared libraries do also, but many do not, so this can not | |
604 | be assumed. | |
605 | ||
606 | - If there are multiple code sections they will be loaded | |
607 | at different relative addresses in memory than they are | |
608 | in the objfile, since all sections in the file will start | |
609 | at address zero. | |
610 | ||
611 | Because GDB has very limited ability to map from an | |
612 | address in debug info to the correct code section, | |
613 | it relies on adding SECT_OFF_TEXT to things which might be | |
614 | code. If we clear all the section offsets, and set the | |
615 | section VMAs instead, then symfile_relocate_debug_section | |
616 | will return meaningful debug information pointing at the | |
617 | correct sections. | |
618 | ||
619 | GDB has too many different data structures for section | |
620 | addresses - a bfd, objfile, and so_list all have section | |
621 | tables, as does exec_ops. Some of these could probably | |
622 | be eliminated. */ | |
623 | ||
624 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
625 | cur_sec = cur_sec->next) | |
626 | { | |
627 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
628 | continue; | |
629 | ||
630 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
631 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
632 | offsets[cur_sec->index]); | |
2711e456 DJ |
633 | offsets[cur_sec->index] = 0; |
634 | } | |
635 | } | |
c1bd25fd DJ |
636 | } |
637 | ||
e8289572 JB |
638 | /* Remember the bfd indexes for the .text, .data, .bss and |
639 | .rodata sections. */ | |
640 | init_objfile_sect_indices (objfile); | |
641 | } | |
642 | ||
643 | ||
31d99776 DJ |
644 | /* Divide the file into segments, which are individual relocatable units. |
645 | This is the default version of the sym_fns.sym_segments function for | |
646 | symbol readers that do not have an explicit representation of segments. | |
647 | It assumes that object files do not have segments, and fully linked | |
648 | files have a single segment. */ | |
649 | ||
650 | struct symfile_segment_data * | |
651 | default_symfile_segments (bfd *abfd) | |
652 | { | |
653 | int num_sections, i; | |
654 | asection *sect; | |
655 | struct symfile_segment_data *data; | |
656 | CORE_ADDR low, high; | |
657 | ||
658 | /* Relocatable files contain enough information to position each | |
659 | loadable section independently; they should not be relocated | |
660 | in segments. */ | |
661 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
662 | return NULL; | |
663 | ||
664 | /* Make sure there is at least one loadable section in the file. */ | |
665 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
666 | { | |
667 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
668 | continue; | |
669 | ||
670 | break; | |
671 | } | |
672 | if (sect == NULL) | |
673 | return NULL; | |
674 | ||
675 | low = bfd_get_section_vma (abfd, sect); | |
676 | high = low + bfd_get_section_size (sect); | |
677 | ||
678 | data = XZALLOC (struct symfile_segment_data); | |
679 | data->num_segments = 1; | |
680 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
681 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
682 | ||
683 | num_sections = bfd_count_sections (abfd); | |
684 | data->segment_info = XCALLOC (num_sections, int); | |
685 | ||
686 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
687 | { | |
688 | CORE_ADDR vma; | |
689 | ||
690 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
691 | continue; | |
692 | ||
693 | vma = bfd_get_section_vma (abfd, sect); | |
694 | if (vma < low) | |
695 | low = vma; | |
696 | if (vma + bfd_get_section_size (sect) > high) | |
697 | high = vma + bfd_get_section_size (sect); | |
698 | ||
699 | data->segment_info[i] = 1; | |
700 | } | |
701 | ||
702 | data->segment_bases[0] = low; | |
703 | data->segment_sizes[0] = high - low; | |
704 | ||
705 | return data; | |
706 | } | |
707 | ||
c906108c SS |
708 | /* Process a symbol file, as either the main file or as a dynamically |
709 | loaded file. | |
710 | ||
96baa820 JM |
711 | OBJFILE is where the symbols are to be read from. |
712 | ||
7e8580c1 JB |
713 | ADDRS is the list of section load addresses. If the user has given |
714 | an 'add-symbol-file' command, then this is the list of offsets and | |
715 | addresses he or she provided as arguments to the command; or, if | |
716 | we're handling a shared library, these are the actual addresses the | |
717 | sections are loaded at, according to the inferior's dynamic linker | |
718 | (as gleaned by GDB's shared library code). We convert each address | |
719 | into an offset from the section VMA's as it appears in the object | |
720 | file, and then call the file's sym_offsets function to convert this | |
721 | into a format-specific offset table --- a `struct section_offsets'. | |
722 | If ADDRS is non-zero, OFFSETS must be zero. | |
723 | ||
724 | OFFSETS is a table of section offsets already in the right | |
725 | format-specific representation. NUM_OFFSETS is the number of | |
726 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
727 | assume this is the proper table the call to sym_offsets described | |
728 | above would produce. Instead of calling sym_offsets, we just dump | |
729 | it right into objfile->section_offsets. (When we're re-reading | |
730 | symbols from an objfile, we don't have the original load address | |
731 | list any more; all we have is the section offset table.) If | |
732 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 733 | |
7eedccfa PP |
734 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
735 | an extra symbol file such as dynamically loaded code, and wether | |
736 | breakpoint reset should be deferred. */ | |
c906108c SS |
737 | |
738 | void | |
7e8580c1 JB |
739 | syms_from_objfile (struct objfile *objfile, |
740 | struct section_addr_info *addrs, | |
741 | struct section_offsets *offsets, | |
742 | int num_offsets, | |
7eedccfa | 743 | int add_flags) |
c906108c | 744 | { |
a39a16c4 | 745 | struct section_addr_info *local_addr = NULL; |
c906108c | 746 | struct cleanup *old_chain; |
7eedccfa | 747 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 748 | |
7e8580c1 | 749 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 750 | |
c906108c | 751 | init_entry_point_info (objfile); |
31d99776 | 752 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 753 | |
75245b24 MS |
754 | if (objfile->sf == NULL) |
755 | return; /* No symbols. */ | |
756 | ||
c906108c SS |
757 | /* Make sure that partially constructed symbol tables will be cleaned up |
758 | if an error occurs during symbol reading. */ | |
74b7792f | 759 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 760 | |
a39a16c4 MM |
761 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
762 | list. We now establish the convention that an addr of zero means | |
763 | no load address was specified. */ | |
764 | if (! addrs && ! offsets) | |
765 | { | |
5417f6dc | 766 | local_addr |
a39a16c4 MM |
767 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
768 | make_cleanup (xfree, local_addr); | |
769 | addrs = local_addr; | |
770 | } | |
771 | ||
772 | /* Now either addrs or offsets is non-zero. */ | |
773 | ||
c5aa993b | 774 | if (mainline) |
c906108c SS |
775 | { |
776 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 777 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 778 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
779 | |
780 | /* Since no error yet, throw away the old symbol table. */ | |
781 | ||
782 | if (symfile_objfile != NULL) | |
783 | { | |
784 | free_objfile (symfile_objfile); | |
adb7f338 | 785 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
786 | } |
787 | ||
788 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
789 | If the user wants to get rid of them, they should do "symbol-file" |
790 | without arguments first. Not sure this is the best behavior | |
791 | (PR 2207). */ | |
c906108c | 792 | |
c5aa993b | 793 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
794 | } |
795 | ||
796 | /* Convert addr into an offset rather than an absolute address. | |
797 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 798 | and assume that <addr> is where that got loaded. |
c906108c | 799 | |
53a5351d JM |
800 | We no longer warn if the lowest section is not a text segment (as |
801 | happens for the PA64 port. */ | |
1549f619 | 802 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 803 | { |
1549f619 EZ |
804 | asection *lower_sect; |
805 | asection *sect; | |
806 | CORE_ADDR lower_offset; | |
807 | int i; | |
808 | ||
5417f6dc | 809 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
810 | continguous sections. FIXME!! won't work without call to find |
811 | .text first, but this assumes text is lowest section. */ | |
812 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
813 | if (lower_sect == NULL) | |
c906108c | 814 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 815 | &lower_sect); |
2acceee2 | 816 | if (lower_sect == NULL) |
ff8e85c3 PA |
817 | { |
818 | warning (_("no loadable sections found in added symbol-file %s"), | |
819 | objfile->name); | |
820 | lower_offset = 0; | |
821 | } | |
2acceee2 | 822 | else |
ff8e85c3 | 823 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); |
5417f6dc | 824 | |
13de58df | 825 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
826 | FIXME! Sections must be in order of increasing loadable section |
827 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 828 | |
13de58df JB |
829 | Adjust offsets if the segments are not contiguous. |
830 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
831 | the offset of the highest loadable section lower than it |
832 | (the loadable section directly below it in memory). | |
833 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
834 | ||
1549f619 | 835 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
836 | { |
837 | if (addrs->other[i].addr != 0) | |
838 | { | |
839 | sect = bfd_get_section_by_name (objfile->obfd, | |
840 | addrs->other[i].name); | |
841 | if (sect) | |
842 | { | |
843 | addrs->other[i].addr | |
844 | -= bfd_section_vma (objfile->obfd, sect); | |
845 | lower_offset = addrs->other[i].addr; | |
846 | /* This is the index used by BFD. */ | |
847 | addrs->other[i].sectindex = sect->index ; | |
848 | } | |
849 | else | |
850 | { | |
8a3fe4f8 | 851 | warning (_("section %s not found in %s"), |
5417f6dc | 852 | addrs->other[i].name, |
7e8580c1 JB |
853 | objfile->name); |
854 | addrs->other[i].addr = 0; | |
855 | } | |
856 | } | |
857 | else | |
858 | addrs->other[i].addr = lower_offset; | |
859 | } | |
c906108c SS |
860 | } |
861 | ||
862 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
863 | appear for this new file, and record how verbose to be, then do the | |
864 | initial symbol reading for this file. */ | |
865 | ||
c5aa993b | 866 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 867 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 868 | |
7e8580c1 JB |
869 | if (addrs) |
870 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
871 | else | |
872 | { | |
873 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
874 | ||
875 | /* Just copy in the offset table directly as given to us. */ | |
876 | objfile->num_sections = num_offsets; | |
877 | objfile->section_offsets | |
878 | = ((struct section_offsets *) | |
8b92e4d5 | 879 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
880 | memcpy (objfile->section_offsets, offsets, size); |
881 | ||
882 | init_objfile_sect_indices (objfile); | |
883 | } | |
c906108c | 884 | |
f4352531 | 885 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 886 | |
c906108c SS |
887 | /* Discard cleanups as symbol reading was successful. */ |
888 | ||
889 | discard_cleanups (old_chain); | |
f7545552 | 890 | xfree (local_addr); |
c906108c SS |
891 | } |
892 | ||
893 | /* Perform required actions after either reading in the initial | |
894 | symbols for a new objfile, or mapping in the symbols from a reusable | |
895 | objfile. */ | |
c5aa993b | 896 | |
c906108c | 897 | void |
7eedccfa | 898 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c SS |
899 | { |
900 | ||
901 | /* If this is the main symbol file we have to clean up all users of the | |
902 | old main symbol file. Otherwise it is sufficient to fixup all the | |
903 | breakpoints that may have been redefined by this symbol file. */ | |
7eedccfa | 904 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
905 | { |
906 | /* OK, make it the "real" symbol file. */ | |
907 | symfile_objfile = objfile; | |
908 | ||
909 | clear_symtab_users (); | |
910 | } | |
7eedccfa | 911 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 912 | { |
69de3c6a | 913 | breakpoint_re_set (); |
c906108c SS |
914 | } |
915 | ||
916 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 917 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
918 | } |
919 | ||
920 | /* Process a symbol file, as either the main file or as a dynamically | |
921 | loaded file. | |
922 | ||
5417f6dc RM |
923 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
924 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 925 | |
7eedccfa PP |
926 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
927 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
928 | |
929 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
930 | syms_from_objfile, above. |
931 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 932 | |
c906108c SS |
933 | Upon success, returns a pointer to the objfile that was added. |
934 | Upon failure, jumps back to command level (never returns). */ | |
7eedccfa | 935 | |
7904e09f | 936 | static struct objfile * |
7eedccfa PP |
937 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
938 | int add_flags, | |
7904e09f JB |
939 | struct section_addr_info *addrs, |
940 | struct section_offsets *offsets, | |
941 | int num_offsets, | |
7eedccfa | 942 | int flags) |
c906108c SS |
943 | { |
944 | struct objfile *objfile; | |
945 | struct partial_symtab *psymtab; | |
a39a16c4 | 946 | struct cleanup *my_cleanups; |
5417f6dc | 947 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 948 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
c906108c | 949 | |
5417f6dc | 950 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 951 | |
5417f6dc RM |
952 | /* Give user a chance to burp if we'd be |
953 | interactively wiping out any existing symbols. */ | |
c906108c SS |
954 | |
955 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 956 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 957 | && from_tty |
9e2f0ad4 | 958 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 959 | error (_("Not confirmed.")); |
c906108c | 960 | |
2df3850c | 961 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 962 | discard_cleanups (my_cleanups); |
c906108c | 963 | |
78a4a9b9 AC |
964 | /* We either created a new mapped symbol table, mapped an existing |
965 | symbol table file which has not had initial symbol reading | |
966 | performed, or need to read an unmapped symbol table. */ | |
967 | if (from_tty || info_verbose) | |
c906108c | 968 | { |
769d7dc4 AC |
969 | if (deprecated_pre_add_symbol_hook) |
970 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 971 | else |
c906108c | 972 | { |
55333a84 DE |
973 | printf_unfiltered (_("Reading symbols from %s..."), name); |
974 | wrap_here (""); | |
975 | gdb_flush (gdb_stdout); | |
c906108c | 976 | } |
c906108c | 977 | } |
78a4a9b9 | 978 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 979 | add_flags); |
c906108c SS |
980 | |
981 | /* We now have at least a partial symbol table. Check to see if the | |
982 | user requested that all symbols be read on initial access via either | |
983 | the gdb startup command line or on a per symbol file basis. Expand | |
984 | all partial symbol tables for this objfile if so. */ | |
985 | ||
2acceee2 | 986 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 987 | { |
55333a84 | 988 | if (from_tty || info_verbose) |
c906108c | 989 | { |
a3f17187 | 990 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
991 | wrap_here (""); |
992 | gdb_flush (gdb_stdout); | |
993 | } | |
994 | ||
c5aa993b | 995 | for (psymtab = objfile->psymtabs; |
c906108c | 996 | psymtab != NULL; |
c5aa993b | 997 | psymtab = psymtab->next) |
c906108c SS |
998 | { |
999 | psymtab_to_symtab (psymtab); | |
1000 | } | |
1001 | } | |
1002 | ||
55333a84 | 1003 | if ((from_tty || info_verbose) |
e361b228 | 1004 | && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1005 | { |
1006 | wrap_here (""); | |
55333a84 | 1007 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1008 | wrap_here (""); |
1009 | } | |
1010 | ||
c906108c SS |
1011 | if (from_tty || info_verbose) |
1012 | { | |
769d7dc4 AC |
1013 | if (deprecated_post_add_symbol_hook) |
1014 | deprecated_post_add_symbol_hook (); | |
c906108c | 1015 | else |
55333a84 | 1016 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1017 | } |
1018 | ||
481d0f41 JB |
1019 | /* We print some messages regardless of whether 'from_tty || |
1020 | info_verbose' is true, so make sure they go out at the right | |
1021 | time. */ | |
1022 | gdb_flush (gdb_stdout); | |
1023 | ||
a39a16c4 MM |
1024 | do_cleanups (my_cleanups); |
1025 | ||
109f874e | 1026 | if (objfile->sf == NULL) |
8caee43b PP |
1027 | { |
1028 | observer_notify_new_objfile (objfile); | |
1029 | return objfile; /* No symbols. */ | |
1030 | } | |
109f874e | 1031 | |
7eedccfa | 1032 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1033 | |
06d3b283 | 1034 | observer_notify_new_objfile (objfile); |
c906108c | 1035 | |
ce7d4522 | 1036 | bfd_cache_close_all (); |
c906108c SS |
1037 | return (objfile); |
1038 | } | |
1039 | ||
9cce227f TG |
1040 | /* Add BFD as a separate debug file for OBJFILE. */ |
1041 | ||
1042 | void | |
1043 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1044 | { | |
1045 | /* Currently only one separate debug objfile is supported. */ | |
1046 | gdb_assert (objfile && objfile->separate_debug_objfile == NULL); | |
1047 | ||
1048 | objfile->separate_debug_objfile = | |
1049 | symbol_file_add_with_addrs_or_offsets | |
1050 | (bfd, symfile_flags, | |
1051 | 0, /* No addr table. */ | |
1052 | objfile->section_offsets, objfile->num_sections, | |
1053 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW | |
1054 | | OBJF_USERLOADED)); | |
1055 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
1056 | = objfile; | |
1057 | ||
1058 | /* Put the separate debug object before the normal one, this is so that | |
1059 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
1060 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
1061 | } | |
7904e09f | 1062 | |
eb4556d7 JB |
1063 | /* Process the symbol file ABFD, as either the main file or as a |
1064 | dynamically loaded file. | |
1065 | ||
1066 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1067 | details. */ | |
1068 | struct objfile * | |
7eedccfa | 1069 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1070 | struct section_addr_info *addrs, |
7eedccfa | 1071 | int flags) |
eb4556d7 | 1072 | { |
7eedccfa PP |
1073 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
1074 | flags); | |
eb4556d7 JB |
1075 | } |
1076 | ||
1077 | ||
7904e09f JB |
1078 | /* Process a symbol file, as either the main file or as a dynamically |
1079 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1080 | for details. */ | |
1081 | struct objfile * | |
7eedccfa PP |
1082 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1083 | int flags) | |
7904e09f | 1084 | { |
7eedccfa PP |
1085 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
1086 | flags); | |
7904e09f JB |
1087 | } |
1088 | ||
1089 | ||
d7db6da9 FN |
1090 | /* Call symbol_file_add() with default values and update whatever is |
1091 | affected by the loading of a new main(). | |
1092 | Used when the file is supplied in the gdb command line | |
1093 | and by some targets with special loading requirements. | |
1094 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1095 | argument for the switches that can only be specified in the symbol_file | |
1096 | command itself. */ | |
5417f6dc | 1097 | |
1adeb98a FN |
1098 | void |
1099 | symbol_file_add_main (char *args, int from_tty) | |
1100 | { | |
d7db6da9 FN |
1101 | symbol_file_add_main_1 (args, from_tty, 0); |
1102 | } | |
1103 | ||
1104 | static void | |
1105 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1106 | { | |
7eedccfa PP |
1107 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1108 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1109 | |
d7db6da9 FN |
1110 | /* Getting new symbols may change our opinion about |
1111 | what is frameless. */ | |
1112 | reinit_frame_cache (); | |
1113 | ||
1114 | set_initial_language (); | |
1adeb98a FN |
1115 | } |
1116 | ||
1117 | void | |
1118 | symbol_file_clear (int from_tty) | |
1119 | { | |
1120 | if ((have_full_symbols () || have_partial_symbols ()) | |
1121 | && from_tty | |
0430b0d6 AS |
1122 | && (symfile_objfile |
1123 | ? !query (_("Discard symbol table from `%s'? "), | |
1124 | symfile_objfile->name) | |
1125 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1126 | error (_("Not confirmed.")); |
1adeb98a | 1127 | |
d10c338d | 1128 | free_all_objfiles (); |
1adeb98a | 1129 | |
d10c338d DE |
1130 | /* solib descriptors may have handles to objfiles. Since their |
1131 | storage has just been released, we'd better wipe the solib | |
1132 | descriptors as well. */ | |
1133 | no_shared_libraries (NULL, from_tty); | |
1134 | ||
adb7f338 | 1135 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1136 | if (from_tty) |
1137 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1138 | } |
1139 | ||
5b5d99cf JB |
1140 | static char * |
1141 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1142 | { | |
1143 | asection *sect; | |
1144 | bfd_size_type debuglink_size; | |
1145 | unsigned long crc32; | |
1146 | char *contents; | |
1147 | int crc_offset; | |
1148 | unsigned char *p; | |
5417f6dc | 1149 | |
5b5d99cf JB |
1150 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1151 | ||
1152 | if (sect == NULL) | |
1153 | return NULL; | |
1154 | ||
1155 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1156 | |
5b5d99cf JB |
1157 | contents = xmalloc (debuglink_size); |
1158 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1159 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1160 | ||
1161 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1162 | crc_offset = strlen (contents) + 1; | |
1163 | crc_offset = (crc_offset + 3) & ~3; | |
1164 | ||
1165 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1166 | |
5b5d99cf JB |
1167 | *crc32_out = crc32; |
1168 | return contents; | |
1169 | } | |
1170 | ||
1171 | static int | |
287ccc17 | 1172 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1173 | struct objfile *parent_objfile) |
5b5d99cf JB |
1174 | { |
1175 | unsigned long file_crc = 0; | |
f1838a98 | 1176 | bfd *abfd; |
777ea8f1 | 1177 | gdb_byte buffer[8*1024]; |
5b5d99cf | 1178 | int count; |
32a0e547 JK |
1179 | struct stat parent_stat, abfd_stat; |
1180 | ||
1181 | /* Find a separate debug info file as if symbols would be present in | |
1182 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1183 | section can contain just the basename of PARENT_OBJFILE without any | |
1184 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
1185 | the separate debug infos with the same basename can exist. */ | |
1186 | ||
1187 | if (strcmp (name, parent_objfile->name) == 0) | |
1188 | return 0; | |
5b5d99cf | 1189 | |
874f5765 | 1190 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1191 | |
1192 | if (!abfd) | |
5b5d99cf JB |
1193 | return 0; |
1194 | ||
32a0e547 JK |
1195 | /* Verify symlinks were not the cause of strcmp name difference above. |
1196 | ||
1197 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1198 | st_ino; they always set it to zero. (Windows does provide a | |
1199 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1200 | case. While there is no guarantee that a system that provides | |
1201 | meaningful inode numbers will never set st_ino to zero, this is | |
1202 | merely an optimization, so we do not need to worry about false | |
1203 | negatives. */ | |
1204 | ||
1205 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
1206 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0 | |
1207 | && abfd_stat.st_dev == parent_stat.st_dev | |
1208 | && abfd_stat.st_ino == parent_stat.st_ino | |
1209 | && abfd_stat.st_ino != 0) | |
1210 | { | |
1211 | bfd_close (abfd); | |
1212 | return 0; | |
1213 | } | |
1214 | ||
f1838a98 | 1215 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1216 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1217 | ||
f1838a98 | 1218 | bfd_close (abfd); |
5b5d99cf | 1219 | |
287ccc17 JK |
1220 | if (crc != file_crc) |
1221 | { | |
1222 | warning (_("the debug information found in \"%s\"" | |
1223 | " does not match \"%s\" (CRC mismatch).\n"), | |
32a0e547 | 1224 | name, parent_objfile->name); |
287ccc17 JK |
1225 | return 0; |
1226 | } | |
1227 | ||
1228 | return 1; | |
5b5d99cf JB |
1229 | } |
1230 | ||
aa28a74e | 1231 | char *debug_file_directory = NULL; |
920d2a44 AC |
1232 | static void |
1233 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1234 | struct cmd_list_element *c, const char *value) | |
1235 | { | |
1236 | fprintf_filtered (file, _("\ | |
1237 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1238 | value); | |
1239 | } | |
5b5d99cf JB |
1240 | |
1241 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1242 | #define DEBUG_SUBDIRECTORY ".debug" | |
1243 | #endif | |
1244 | ||
9cce227f TG |
1245 | char * |
1246 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1247 | { | |
1248 | asection *sect; | |
1249 | char *basename, *name_copy, *debugdir; | |
1250 | char *dir = NULL; | |
1251 | char *debugfile = NULL; | |
1252 | char *canon_name = NULL; | |
1253 | bfd_size_type debuglink_size; | |
1254 | unsigned long crc32; | |
1255 | int i; | |
5b5d99cf JB |
1256 | |
1257 | basename = get_debug_link_info (objfile, &crc32); | |
1258 | ||
1259 | if (basename == NULL) | |
287ccc17 JK |
1260 | /* There's no separate debug info, hence there's no way we could |
1261 | load it => no warning. */ | |
25522fae | 1262 | goto cleanup_return_debugfile; |
5417f6dc | 1263 | |
5b5d99cf JB |
1264 | dir = xstrdup (objfile->name); |
1265 | ||
fe36c4f4 JB |
1266 | /* Strip off the final filename part, leaving the directory name, |
1267 | followed by a slash. Objfile names should always be absolute and | |
1268 | tilde-expanded, so there should always be a slash in there | |
1269 | somewhere. */ | |
5b5d99cf JB |
1270 | for (i = strlen(dir) - 1; i >= 0; i--) |
1271 | { | |
1272 | if (IS_DIR_SEPARATOR (dir[i])) | |
1273 | break; | |
1274 | } | |
fe36c4f4 | 1275 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1276 | dir[i+1] = '\0'; |
5417f6dc | 1277 | |
1ffa32ee JK |
1278 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1279 | canon_name = lrealpath (dir); | |
1280 | i = strlen (dir); | |
1281 | if (canon_name && strlen (canon_name) > i) | |
1282 | i = strlen (canon_name); | |
1283 | ||
25522fae JK |
1284 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1285 | + i | |
1286 | + strlen (DEBUG_SUBDIRECTORY) | |
1287 | + strlen ("/") | |
1288 | + strlen (basename) | |
1289 | + 1); | |
5b5d99cf JB |
1290 | |
1291 | /* First try in the same directory as the original file. */ | |
1292 | strcpy (debugfile, dir); | |
1293 | strcat (debugfile, basename); | |
1294 | ||
32a0e547 | 1295 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1296 | goto cleanup_return_debugfile; |
5417f6dc | 1297 | |
5b5d99cf JB |
1298 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1299 | strcpy (debugfile, dir); | |
1300 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1301 | strcat (debugfile, "/"); | |
1302 | strcat (debugfile, basename); | |
1303 | ||
32a0e547 | 1304 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1305 | goto cleanup_return_debugfile; |
5417f6dc | 1306 | |
24ddea62 JK |
1307 | /* Then try in the global debugfile directories. |
1308 | ||
1309 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1310 | cause "/..." lookups. */ | |
5417f6dc | 1311 | |
24ddea62 JK |
1312 | debugdir = debug_file_directory; |
1313 | do | |
aa28a74e | 1314 | { |
24ddea62 JK |
1315 | char *debugdir_end; |
1316 | ||
1317 | while (*debugdir == DIRNAME_SEPARATOR) | |
1318 | debugdir++; | |
1319 | ||
1320 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1321 | if (debugdir_end == NULL) | |
1322 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1323 | ||
1324 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1325 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1326 | strcat (debugfile, "/"); |
24ddea62 | 1327 | strcat (debugfile, dir); |
aa28a74e DJ |
1328 | strcat (debugfile, basename); |
1329 | ||
32a0e547 | 1330 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1331 | goto cleanup_return_debugfile; |
24ddea62 JK |
1332 | |
1333 | /* If the file is in the sysroot, try using its base path in the | |
1334 | global debugfile directory. */ | |
1335 | if (canon_name | |
1336 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1337 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1338 | { | |
1339 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1340 | debugfile[debugdir_end - debugdir] = 0; | |
1341 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1342 | strcat (debugfile, "/"); | |
1343 | strcat (debugfile, basename); | |
1344 | ||
32a0e547 | 1345 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1346 | goto cleanup_return_debugfile; |
1347 | } | |
1348 | ||
1349 | debugdir = debugdir_end; | |
aa28a74e | 1350 | } |
24ddea62 | 1351 | while (*debugdir != 0); |
aa28a74e | 1352 | |
25522fae JK |
1353 | xfree (debugfile); |
1354 | debugfile = NULL; | |
aa28a74e | 1355 | |
25522fae JK |
1356 | cleanup_return_debugfile: |
1357 | xfree (canon_name); | |
5b5d99cf JB |
1358 | xfree (basename); |
1359 | xfree (dir); | |
25522fae | 1360 | return debugfile; |
5b5d99cf JB |
1361 | } |
1362 | ||
1363 | ||
c906108c SS |
1364 | /* This is the symbol-file command. Read the file, analyze its |
1365 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1366 | the command is rather bizarre: |
1367 | ||
1368 | 1. The function buildargv implements various quoting conventions | |
1369 | which are undocumented and have little or nothing in common with | |
1370 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1371 | ||
1372 | 2. Options are used, which are not generally used in GDB (perhaps | |
1373 | "set mapped on", "set readnow on" would be better) | |
1374 | ||
1375 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1376 | conventions (because it is confusing and inconvenient). */ |
1377 | ||
1378 | void | |
fba45db2 | 1379 | symbol_file_command (char *args, int from_tty) |
c906108c | 1380 | { |
c906108c SS |
1381 | dont_repeat (); |
1382 | ||
1383 | if (args == NULL) | |
1384 | { | |
1adeb98a | 1385 | symbol_file_clear (from_tty); |
c906108c SS |
1386 | } |
1387 | else | |
1388 | { | |
d1a41061 | 1389 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1390 | int flags = OBJF_USERLOADED; |
1391 | struct cleanup *cleanups; | |
1392 | char *name = NULL; | |
1393 | ||
7a292a7a | 1394 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1395 | while (*argv != NULL) |
1396 | { | |
78a4a9b9 AC |
1397 | if (strcmp (*argv, "-readnow") == 0) |
1398 | flags |= OBJF_READNOW; | |
1399 | else if (**argv == '-') | |
8a3fe4f8 | 1400 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1401 | else |
1402 | { | |
cb2f3a29 | 1403 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1404 | name = *argv; |
78a4a9b9 | 1405 | } |
cb2f3a29 | 1406 | |
c906108c SS |
1407 | argv++; |
1408 | } | |
1409 | ||
1410 | if (name == NULL) | |
cb2f3a29 MK |
1411 | error (_("no symbol file name was specified")); |
1412 | ||
c906108c SS |
1413 | do_cleanups (cleanups); |
1414 | } | |
1415 | } | |
1416 | ||
1417 | /* Set the initial language. | |
1418 | ||
cb2f3a29 MK |
1419 | FIXME: A better solution would be to record the language in the |
1420 | psymtab when reading partial symbols, and then use it (if known) to | |
1421 | set the language. This would be a win for formats that encode the | |
1422 | language in an easily discoverable place, such as DWARF. For | |
1423 | stabs, we can jump through hoops looking for specially named | |
1424 | symbols or try to intuit the language from the specific type of | |
1425 | stabs we find, but we can't do that until later when we read in | |
1426 | full symbols. */ | |
c906108c | 1427 | |
8b60591b | 1428 | void |
fba45db2 | 1429 | set_initial_language (void) |
c906108c SS |
1430 | { |
1431 | struct partial_symtab *pst; | |
c5aa993b | 1432 | enum language lang = language_unknown; |
c906108c SS |
1433 | |
1434 | pst = find_main_psymtab (); | |
1435 | if (pst != NULL) | |
1436 | { | |
c5aa993b | 1437 | if (pst->filename != NULL) |
cb2f3a29 MK |
1438 | lang = deduce_language_from_filename (pst->filename); |
1439 | ||
c906108c SS |
1440 | if (lang == language_unknown) |
1441 | { | |
c5aa993b JM |
1442 | /* Make C the default language */ |
1443 | lang = language_c; | |
c906108c | 1444 | } |
cb2f3a29 | 1445 | |
c906108c | 1446 | set_language (lang); |
cb2f3a29 | 1447 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1448 | } |
1449 | } | |
1450 | ||
874f5765 TG |
1451 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1452 | open it normally. */ | |
1453 | ||
1454 | bfd * | |
1455 | bfd_open_maybe_remote (const char *name) | |
1456 | { | |
1457 | if (remote_filename_p (name)) | |
1458 | return remote_bfd_open (name, gnutarget); | |
1459 | else | |
1460 | return bfd_openr (name, gnutarget); | |
1461 | } | |
1462 | ||
1463 | ||
cb2f3a29 MK |
1464 | /* Open the file specified by NAME and hand it off to BFD for |
1465 | preliminary analysis. Return a newly initialized bfd *, which | |
1466 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1467 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1468 | |
1469 | bfd * | |
fba45db2 | 1470 | symfile_bfd_open (char *name) |
c906108c SS |
1471 | { |
1472 | bfd *sym_bfd; | |
1473 | int desc; | |
1474 | char *absolute_name; | |
1475 | ||
f1838a98 UW |
1476 | if (remote_filename_p (name)) |
1477 | { | |
1478 | name = xstrdup (name); | |
1479 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1480 | if (!sym_bfd) | |
1481 | { | |
1482 | make_cleanup (xfree, name); | |
1483 | error (_("`%s': can't open to read symbols: %s."), name, | |
1484 | bfd_errmsg (bfd_get_error ())); | |
1485 | } | |
1486 | ||
1487 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1488 | { | |
1489 | bfd_close (sym_bfd); | |
1490 | make_cleanup (xfree, name); | |
1491 | error (_("`%s': can't read symbols: %s."), name, | |
1492 | bfd_errmsg (bfd_get_error ())); | |
1493 | } | |
1494 | ||
1495 | return sym_bfd; | |
1496 | } | |
1497 | ||
cb2f3a29 | 1498 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1499 | |
1500 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1501 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1502 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1503 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1504 | if (desc < 0) |
1505 | { | |
1506 | char *exename = alloca (strlen (name) + 5); | |
1507 | strcat (strcpy (exename, name), ".exe"); | |
014d698b | 1508 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1509 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1510 | } |
1511 | #endif | |
1512 | if (desc < 0) | |
1513 | { | |
b8c9b27d | 1514 | make_cleanup (xfree, name); |
c906108c SS |
1515 | perror_with_name (name); |
1516 | } | |
cb2f3a29 MK |
1517 | |
1518 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1519 | bfd. It'll be freed in free_objfile(). */ | |
1520 | xfree (name); | |
1521 | name = absolute_name; | |
c906108c | 1522 | |
9f76c2cd | 1523 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1524 | if (!sym_bfd) |
1525 | { | |
1526 | close (desc); | |
b8c9b27d | 1527 | make_cleanup (xfree, name); |
f1838a98 | 1528 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1529 | bfd_errmsg (bfd_get_error ())); |
1530 | } | |
549c1eea | 1531 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1532 | |
1533 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1534 | { | |
cb2f3a29 MK |
1535 | /* FIXME: should be checking for errors from bfd_close (for one |
1536 | thing, on error it does not free all the storage associated | |
1537 | with the bfd). */ | |
1538 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1539 | make_cleanup (xfree, name); |
f1838a98 | 1540 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1541 | bfd_errmsg (bfd_get_error ())); |
1542 | } | |
cb2f3a29 | 1543 | |
4f6f9936 JK |
1544 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1545 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1546 | ||
cb2f3a29 | 1547 | return sym_bfd; |
c906108c SS |
1548 | } |
1549 | ||
cb2f3a29 MK |
1550 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1551 | the section was not found. */ | |
1552 | ||
0e931cf0 JB |
1553 | int |
1554 | get_section_index (struct objfile *objfile, char *section_name) | |
1555 | { | |
1556 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1557 | |
0e931cf0 JB |
1558 | if (sect) |
1559 | return sect->index; | |
1560 | else | |
1561 | return -1; | |
1562 | } | |
1563 | ||
cb2f3a29 MK |
1564 | /* Link SF into the global symtab_fns list. Called on startup by the |
1565 | _initialize routine in each object file format reader, to register | |
1566 | information about each format the the reader is prepared to | |
1567 | handle. */ | |
c906108c SS |
1568 | |
1569 | void | |
fba45db2 | 1570 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1571 | { |
1572 | sf->next = symtab_fns; | |
1573 | symtab_fns = sf; | |
1574 | } | |
1575 | ||
cb2f3a29 MK |
1576 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1577 | either returns or calls error(). The result is an initialized | |
1578 | struct sym_fns in the objfile structure, that contains cached | |
1579 | information about the symbol file. */ | |
c906108c | 1580 | |
31d99776 DJ |
1581 | static struct sym_fns * |
1582 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1583 | { |
1584 | struct sym_fns *sf; | |
31d99776 | 1585 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1586 | |
75245b24 MS |
1587 | if (our_flavour == bfd_target_srec_flavour |
1588 | || our_flavour == bfd_target_ihex_flavour | |
1589 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1590 | return NULL; /* No symbols. */ |
75245b24 | 1591 | |
c5aa993b | 1592 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1593 | if (our_flavour == sf->sym_flavour) |
1594 | return sf; | |
cb2f3a29 | 1595 | |
8a3fe4f8 | 1596 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1597 | bfd_get_target (abfd)); |
c906108c SS |
1598 | } |
1599 | \f | |
cb2f3a29 | 1600 | |
c906108c SS |
1601 | /* This function runs the load command of our current target. */ |
1602 | ||
1603 | static void | |
fba45db2 | 1604 | load_command (char *arg, int from_tty) |
c906108c | 1605 | { |
4487aabf PA |
1606 | /* The user might be reloading because the binary has changed. Take |
1607 | this opportunity to check. */ | |
1608 | reopen_exec_file (); | |
1609 | reread_symbols (); | |
1610 | ||
c906108c | 1611 | if (arg == NULL) |
1986bccd AS |
1612 | { |
1613 | char *parg; | |
1614 | int count = 0; | |
1615 | ||
1616 | parg = arg = get_exec_file (1); | |
1617 | ||
1618 | /* Count how many \ " ' tab space there are in the name. */ | |
1619 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1620 | { | |
1621 | parg++; | |
1622 | count++; | |
1623 | } | |
1624 | ||
1625 | if (count) | |
1626 | { | |
1627 | /* We need to quote this string so buildargv can pull it apart. */ | |
1628 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1629 | char *ptemp = temp; | |
1630 | char *prev; | |
1631 | ||
1632 | make_cleanup (xfree, temp); | |
1633 | ||
1634 | prev = parg = arg; | |
1635 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1636 | { | |
1637 | strncpy (ptemp, prev, parg - prev); | |
1638 | ptemp += parg - prev; | |
1639 | prev = parg++; | |
1640 | *ptemp++ = '\\'; | |
1641 | } | |
1642 | strcpy (ptemp, prev); | |
1643 | ||
1644 | arg = temp; | |
1645 | } | |
1646 | } | |
1647 | ||
c906108c | 1648 | target_load (arg, from_tty); |
2889e661 JB |
1649 | |
1650 | /* After re-loading the executable, we don't really know which | |
1651 | overlays are mapped any more. */ | |
1652 | overlay_cache_invalid = 1; | |
c906108c SS |
1653 | } |
1654 | ||
1655 | /* This version of "load" should be usable for any target. Currently | |
1656 | it is just used for remote targets, not inftarg.c or core files, | |
1657 | on the theory that only in that case is it useful. | |
1658 | ||
1659 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1660 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1661 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1662 | performance compares. */ | |
917317f4 | 1663 | |
917317f4 JM |
1664 | static int validate_download = 0; |
1665 | ||
e4f9b4d5 MS |
1666 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1667 | ||
1668 | static void | |
1669 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1670 | { | |
1671 | bfd_size_type *sum = data; | |
1672 | ||
2c500098 | 1673 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1674 | } |
1675 | ||
1676 | /* Opaque data for load_section_callback. */ | |
1677 | struct load_section_data { | |
1678 | unsigned long load_offset; | |
a76d924d DJ |
1679 | struct load_progress_data *progress_data; |
1680 | VEC(memory_write_request_s) *requests; | |
1681 | }; | |
1682 | ||
1683 | /* Opaque data for load_progress. */ | |
1684 | struct load_progress_data { | |
1685 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1686 | unsigned long write_count; |
1687 | unsigned long data_count; | |
1688 | bfd_size_type total_size; | |
a76d924d DJ |
1689 | }; |
1690 | ||
1691 | /* Opaque data for load_progress for a single section. */ | |
1692 | struct load_progress_section_data { | |
1693 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1694 | |
a76d924d | 1695 | /* Per-section data. */ |
cf7a04e8 DJ |
1696 | const char *section_name; |
1697 | ULONGEST section_sent; | |
1698 | ULONGEST section_size; | |
1699 | CORE_ADDR lma; | |
1700 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1701 | }; |
1702 | ||
a76d924d | 1703 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1704 | |
1705 | static void | |
1706 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1707 | { | |
a76d924d DJ |
1708 | struct load_progress_section_data *args = untyped_arg; |
1709 | struct load_progress_data *totals; | |
1710 | ||
1711 | if (args == NULL) | |
1712 | /* Writing padding data. No easy way to get at the cumulative | |
1713 | stats, so just ignore this. */ | |
1714 | return; | |
1715 | ||
1716 | totals = args->cumulative; | |
1717 | ||
1718 | if (bytes == 0 && args->section_sent == 0) | |
1719 | { | |
1720 | /* The write is just starting. Let the user know we've started | |
1721 | this section. */ | |
5af949e3 UW |
1722 | ui_out_message (uiout, 0, "Loading section %s, size %s lma %s\n", |
1723 | args->section_name, hex_string (args->section_size), | |
1724 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1725 | return; |
1726 | } | |
cf7a04e8 DJ |
1727 | |
1728 | if (validate_download) | |
1729 | { | |
1730 | /* Broken memories and broken monitors manifest themselves here | |
1731 | when bring new computers to life. This doubles already slow | |
1732 | downloads. */ | |
1733 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1734 | might add a verify_memory() method to the target vector and | |
1735 | then use that. remote.c could implement that method using | |
1736 | the ``qCRC'' packet. */ | |
1737 | gdb_byte *check = xmalloc (bytes); | |
1738 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1739 | ||
1740 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1741 | error (_("Download verify read failed at %s"), |
1742 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1743 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1744 | error (_("Download verify compare failed at %s"), |
1745 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1746 | do_cleanups (verify_cleanups); |
1747 | } | |
a76d924d | 1748 | totals->data_count += bytes; |
cf7a04e8 DJ |
1749 | args->lma += bytes; |
1750 | args->buffer += bytes; | |
a76d924d | 1751 | totals->write_count += 1; |
cf7a04e8 DJ |
1752 | args->section_sent += bytes; |
1753 | if (quit_flag | |
1754 | || (deprecated_ui_load_progress_hook != NULL | |
1755 | && deprecated_ui_load_progress_hook (args->section_name, | |
1756 | args->section_sent))) | |
1757 | error (_("Canceled the download")); | |
1758 | ||
1759 | if (deprecated_show_load_progress != NULL) | |
1760 | deprecated_show_load_progress (args->section_name, | |
1761 | args->section_sent, | |
1762 | args->section_size, | |
a76d924d DJ |
1763 | totals->data_count, |
1764 | totals->total_size); | |
cf7a04e8 DJ |
1765 | } |
1766 | ||
e4f9b4d5 MS |
1767 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1768 | ||
1769 | static void | |
1770 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1771 | { | |
a76d924d | 1772 | struct memory_write_request *new_request; |
e4f9b4d5 | 1773 | struct load_section_data *args = data; |
a76d924d | 1774 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1775 | bfd_size_type size = bfd_get_section_size (asec); |
1776 | gdb_byte *buffer; | |
cf7a04e8 | 1777 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1778 | |
cf7a04e8 DJ |
1779 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1780 | return; | |
e4f9b4d5 | 1781 | |
cf7a04e8 DJ |
1782 | if (size == 0) |
1783 | return; | |
e4f9b4d5 | 1784 | |
a76d924d DJ |
1785 | new_request = VEC_safe_push (memory_write_request_s, |
1786 | args->requests, NULL); | |
1787 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1788 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1789 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1790 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1791 | new_request->data = xmalloc (size); | |
1792 | new_request->baton = section_data; | |
cf7a04e8 | 1793 | |
a76d924d | 1794 | buffer = new_request->data; |
cf7a04e8 | 1795 | |
a76d924d DJ |
1796 | section_data->cumulative = args->progress_data; |
1797 | section_data->section_name = sect_name; | |
1798 | section_data->section_size = size; | |
1799 | section_data->lma = new_request->begin; | |
1800 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1801 | |
1802 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1803 | } |
1804 | ||
1805 | /* Clean up an entire memory request vector, including load | |
1806 | data and progress records. */ | |
cf7a04e8 | 1807 | |
a76d924d DJ |
1808 | static void |
1809 | clear_memory_write_data (void *arg) | |
1810 | { | |
1811 | VEC(memory_write_request_s) **vec_p = arg; | |
1812 | VEC(memory_write_request_s) *vec = *vec_p; | |
1813 | int i; | |
1814 | struct memory_write_request *mr; | |
cf7a04e8 | 1815 | |
a76d924d DJ |
1816 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1817 | { | |
1818 | xfree (mr->data); | |
1819 | xfree (mr->baton); | |
1820 | } | |
1821 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1822 | } |
1823 | ||
c906108c | 1824 | void |
917317f4 | 1825 | generic_load (char *args, int from_tty) |
c906108c | 1826 | { |
c906108c | 1827 | bfd *loadfile_bfd; |
2b71414d | 1828 | struct timeval start_time, end_time; |
917317f4 | 1829 | char *filename; |
1986bccd | 1830 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1831 | struct load_section_data cbdata; |
a76d924d DJ |
1832 | struct load_progress_data total_progress; |
1833 | ||
e4f9b4d5 | 1834 | CORE_ADDR entry; |
1986bccd | 1835 | char **argv; |
e4f9b4d5 | 1836 | |
a76d924d DJ |
1837 | memset (&cbdata, 0, sizeof (cbdata)); |
1838 | memset (&total_progress, 0, sizeof (total_progress)); | |
1839 | cbdata.progress_data = &total_progress; | |
1840 | ||
1841 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1842 | |
d1a41061 PP |
1843 | if (args == NULL) |
1844 | error_no_arg (_("file to load")); | |
1986bccd | 1845 | |
d1a41061 | 1846 | argv = gdb_buildargv (args); |
1986bccd AS |
1847 | make_cleanup_freeargv (argv); |
1848 | ||
1849 | filename = tilde_expand (argv[0]); | |
1850 | make_cleanup (xfree, filename); | |
1851 | ||
1852 | if (argv[1] != NULL) | |
917317f4 JM |
1853 | { |
1854 | char *endptr; | |
ba5f2f8a | 1855 | |
1986bccd AS |
1856 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1857 | ||
1858 | /* If the last word was not a valid number then | |
1859 | treat it as a file name with spaces in. */ | |
1860 | if (argv[1] == endptr) | |
1861 | error (_("Invalid download offset:%s."), argv[1]); | |
1862 | ||
1863 | if (argv[2] != NULL) | |
1864 | error (_("Too many parameters.")); | |
917317f4 | 1865 | } |
c906108c | 1866 | |
917317f4 | 1867 | /* Open the file for loading. */ |
c906108c SS |
1868 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1869 | if (loadfile_bfd == NULL) | |
1870 | { | |
1871 | perror_with_name (filename); | |
1872 | return; | |
1873 | } | |
917317f4 | 1874 | |
c906108c SS |
1875 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1876 | on error it does not free all the storage associated with the | |
1877 | bfd). */ | |
5c65bbb6 | 1878 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1879 | |
c5aa993b | 1880 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1881 | { |
8a3fe4f8 | 1882 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1883 | bfd_errmsg (bfd_get_error ())); |
1884 | } | |
c5aa993b | 1885 | |
5417f6dc | 1886 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1887 | (void *) &total_progress.total_size); |
1888 | ||
1889 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1890 | |
2b71414d | 1891 | gettimeofday (&start_time, NULL); |
c906108c | 1892 | |
a76d924d DJ |
1893 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1894 | load_progress) != 0) | |
1895 | error (_("Load failed")); | |
c906108c | 1896 | |
2b71414d | 1897 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1898 | |
e4f9b4d5 | 1899 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 1900 | ui_out_text (uiout, "Start address "); |
5af949e3 | 1901 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 1902 | ui_out_text (uiout, ", load size "); |
a76d924d | 1903 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 1904 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
1905 | /* We were doing this in remote-mips.c, I suspect it is right |
1906 | for other targets too. */ | |
fb14de7b | 1907 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 1908 | |
7ca9f392 AC |
1909 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1910 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1911 | was commented out), making the call confuses GDB if more than one | |
1912 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1913 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1914 | |
a76d924d DJ |
1915 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
1916 | total_progress.write_count, | |
1917 | &start_time, &end_time); | |
c906108c SS |
1918 | |
1919 | do_cleanups (old_cleanups); | |
1920 | } | |
1921 | ||
1922 | /* Report how fast the transfer went. */ | |
1923 | ||
917317f4 JM |
1924 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1925 | replaced by print_transfer_performance (with a very different | |
1926 | function signature). */ | |
1927 | ||
c906108c | 1928 | void |
fba45db2 KB |
1929 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1930 | time_t end_time) | |
c906108c | 1931 | { |
2b71414d DJ |
1932 | struct timeval start, end; |
1933 | ||
1934 | start.tv_sec = start_time; | |
1935 | start.tv_usec = 0; | |
1936 | end.tv_sec = end_time; | |
1937 | end.tv_usec = 0; | |
1938 | ||
1939 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
1940 | } |
1941 | ||
1942 | void | |
d9fcf2fb | 1943 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1944 | unsigned long data_count, |
1945 | unsigned long write_count, | |
2b71414d DJ |
1946 | const struct timeval *start_time, |
1947 | const struct timeval *end_time) | |
917317f4 | 1948 | { |
9f43d28c | 1949 | ULONGEST time_count; |
2b71414d DJ |
1950 | |
1951 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
1952 | accuracy and overflow. */ | |
1953 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
1954 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
1955 | ||
8b93c638 JM |
1956 | ui_out_text (uiout, "Transfer rate: "); |
1957 | if (time_count > 0) | |
1958 | { | |
9f43d28c DJ |
1959 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
1960 | ||
1961 | if (ui_out_is_mi_like_p (uiout)) | |
1962 | { | |
1963 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
1964 | ui_out_text (uiout, " bits/sec"); | |
1965 | } | |
1966 | else if (rate < 1024) | |
1967 | { | |
1968 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
1969 | ui_out_text (uiout, " bytes/sec"); | |
1970 | } | |
1971 | else | |
1972 | { | |
1973 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
1974 | ui_out_text (uiout, " KB/sec"); | |
1975 | } | |
8b93c638 JM |
1976 | } |
1977 | else | |
1978 | { | |
ba5f2f8a | 1979 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 1980 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
1981 | } |
1982 | if (write_count > 0) | |
1983 | { | |
1984 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1985 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1986 | ui_out_text (uiout, " bytes/write"); |
1987 | } | |
1988 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1989 | } |
1990 | ||
1991 | /* This function allows the addition of incrementally linked object files. | |
1992 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1993 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1994 | special case syntax for the rombug target (Rombug is the boot | |
1995 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1996 | rombug case, the user doesn't need to supply a text address, | |
1997 | instead a call to target_link() (in target.c) would supply the | |
1998 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 1999 | |
c906108c | 2000 | static void |
fba45db2 | 2001 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2002 | { |
5af949e3 | 2003 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2004 | char *filename = NULL; |
2df3850c | 2005 | int flags = OBJF_USERLOADED; |
c906108c | 2006 | char *arg; |
2acceee2 | 2007 | int expecting_option = 0; |
db162d44 | 2008 | int section_index = 0; |
2acceee2 JM |
2009 | int argcnt = 0; |
2010 | int sec_num = 0; | |
2011 | int i; | |
db162d44 EZ |
2012 | int expecting_sec_name = 0; |
2013 | int expecting_sec_addr = 0; | |
5b96932b | 2014 | char **argv; |
db162d44 | 2015 | |
a39a16c4 | 2016 | struct sect_opt |
2acceee2 | 2017 | { |
2acceee2 JM |
2018 | char *name; |
2019 | char *value; | |
a39a16c4 | 2020 | }; |
db162d44 | 2021 | |
a39a16c4 MM |
2022 | struct section_addr_info *section_addrs; |
2023 | struct sect_opt *sect_opts = NULL; | |
2024 | size_t num_sect_opts = 0; | |
3017564a | 2025 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2026 | |
a39a16c4 | 2027 | num_sect_opts = 16; |
5417f6dc | 2028 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2029 | * sizeof (struct sect_opt)); |
2030 | ||
c906108c SS |
2031 | dont_repeat (); |
2032 | ||
2033 | if (args == NULL) | |
8a3fe4f8 | 2034 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2035 | |
d1a41061 | 2036 | argv = gdb_buildargv (args); |
5b96932b | 2037 | make_cleanup_freeargv (argv); |
db162d44 | 2038 | |
5b96932b AS |
2039 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2040 | { | |
2041 | /* Process the argument. */ | |
db162d44 | 2042 | if (argcnt == 0) |
c906108c | 2043 | { |
db162d44 EZ |
2044 | /* The first argument is the file name. */ |
2045 | filename = tilde_expand (arg); | |
3017564a | 2046 | make_cleanup (xfree, filename); |
c906108c | 2047 | } |
db162d44 | 2048 | else |
7a78ae4e ND |
2049 | if (argcnt == 1) |
2050 | { | |
2051 | /* The second argument is always the text address at which | |
2052 | to load the program. */ | |
2053 | sect_opts[section_index].name = ".text"; | |
2054 | sect_opts[section_index].value = arg; | |
f414f22f | 2055 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2056 | { |
2057 | num_sect_opts *= 2; | |
5417f6dc | 2058 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2059 | xrealloc (sect_opts, |
5417f6dc | 2060 | num_sect_opts |
a39a16c4 MM |
2061 | * sizeof (struct sect_opt))); |
2062 | } | |
7a78ae4e ND |
2063 | } |
2064 | else | |
2065 | { | |
2066 | /* It's an option (starting with '-') or it's an argument | |
2067 | to an option */ | |
2068 | ||
2069 | if (*arg == '-') | |
2070 | { | |
78a4a9b9 AC |
2071 | if (strcmp (arg, "-readnow") == 0) |
2072 | flags |= OBJF_READNOW; | |
2073 | else if (strcmp (arg, "-s") == 0) | |
2074 | { | |
2075 | expecting_sec_name = 1; | |
2076 | expecting_sec_addr = 1; | |
2077 | } | |
7a78ae4e ND |
2078 | } |
2079 | else | |
2080 | { | |
2081 | if (expecting_sec_name) | |
db162d44 | 2082 | { |
7a78ae4e ND |
2083 | sect_opts[section_index].name = arg; |
2084 | expecting_sec_name = 0; | |
db162d44 EZ |
2085 | } |
2086 | else | |
7a78ae4e ND |
2087 | if (expecting_sec_addr) |
2088 | { | |
2089 | sect_opts[section_index].value = arg; | |
2090 | expecting_sec_addr = 0; | |
f414f22f | 2091 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2092 | { |
2093 | num_sect_opts *= 2; | |
5417f6dc | 2094 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2095 | xrealloc (sect_opts, |
5417f6dc | 2096 | num_sect_opts |
a39a16c4 MM |
2097 | * sizeof (struct sect_opt))); |
2098 | } | |
7a78ae4e ND |
2099 | } |
2100 | else | |
8a3fe4f8 | 2101 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2102 | } |
2103 | } | |
c906108c | 2104 | } |
c906108c | 2105 | |
927890d0 JB |
2106 | /* This command takes at least two arguments. The first one is a |
2107 | filename, and the second is the address where this file has been | |
2108 | loaded. Abort now if this address hasn't been provided by the | |
2109 | user. */ | |
2110 | if (section_index < 1) | |
2111 | error (_("The address where %s has been loaded is missing"), filename); | |
2112 | ||
db162d44 EZ |
2113 | /* Print the prompt for the query below. And save the arguments into |
2114 | a sect_addr_info structure to be passed around to other | |
2115 | functions. We have to split this up into separate print | |
bb599908 | 2116 | statements because hex_string returns a local static |
db162d44 | 2117 | string. */ |
5417f6dc | 2118 | |
a3f17187 | 2119 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2120 | section_addrs = alloc_section_addr_info (section_index); |
2121 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2122 | for (i = 0; i < section_index; i++) |
c906108c | 2123 | { |
db162d44 EZ |
2124 | CORE_ADDR addr; |
2125 | char *val = sect_opts[i].value; | |
2126 | char *sec = sect_opts[i].name; | |
5417f6dc | 2127 | |
ae822768 | 2128 | addr = parse_and_eval_address (val); |
db162d44 | 2129 | |
db162d44 EZ |
2130 | /* Here we store the section offsets in the order they were |
2131 | entered on the command line. */ | |
a39a16c4 MM |
2132 | section_addrs->other[sec_num].name = sec; |
2133 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2134 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2135 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2136 | sec_num++; |
2137 | ||
5417f6dc | 2138 | /* The object's sections are initialized when a |
db162d44 | 2139 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2140 | This happens in reread_symbols. |
db162d44 EZ |
2141 | At this point, we don't know what file type this is, |
2142 | so we can't determine what section names are valid. */ | |
2acceee2 | 2143 | } |
db162d44 | 2144 | |
2acceee2 | 2145 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2146 | error (_("Not confirmed.")); |
c906108c | 2147 | |
7eedccfa PP |
2148 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2149 | section_addrs, flags); | |
c906108c SS |
2150 | |
2151 | /* Getting new symbols may change our opinion about what is | |
2152 | frameless. */ | |
2153 | reinit_frame_cache (); | |
db162d44 | 2154 | do_cleanups (my_cleanups); |
c906108c SS |
2155 | } |
2156 | \f | |
70992597 | 2157 | |
c906108c SS |
2158 | /* Re-read symbols if a symbol-file has changed. */ |
2159 | void | |
fba45db2 | 2160 | reread_symbols (void) |
c906108c SS |
2161 | { |
2162 | struct objfile *objfile; | |
2163 | long new_modtime; | |
2164 | int reread_one = 0; | |
2165 | struct stat new_statbuf; | |
2166 | int res; | |
2167 | ||
2168 | /* With the addition of shared libraries, this should be modified, | |
2169 | the load time should be saved in the partial symbol tables, since | |
2170 | different tables may come from different source files. FIXME. | |
2171 | This routine should then walk down each partial symbol table | |
2172 | and see if the symbol table that it originates from has been changed */ | |
2173 | ||
c5aa993b JM |
2174 | for (objfile = object_files; objfile; objfile = objfile->next) |
2175 | { | |
9cce227f TG |
2176 | /* solib-sunos.c creates one objfile with obfd. */ |
2177 | if (objfile->obfd == NULL) | |
2178 | continue; | |
2179 | ||
2180 | /* Separate debug objfiles are handled in the main objfile. */ | |
2181 | if (objfile->separate_debug_objfile_backlink) | |
2182 | continue; | |
2183 | ||
52d16ba8 | 2184 | #ifdef DEPRECATED_IBM6000_TARGET |
9cce227f TG |
2185 | /* If this object is from a shared library, then you should |
2186 | stat on the library name, not member name. */ | |
c906108c | 2187 | |
9cce227f TG |
2188 | if (objfile->obfd->my_archive) |
2189 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2190 | else | |
c906108c | 2191 | #endif |
9cce227f TG |
2192 | res = stat (objfile->name, &new_statbuf); |
2193 | if (res != 0) | |
2194 | { | |
2195 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ | |
2196 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), | |
2197 | objfile->name); | |
2198 | continue; | |
2199 | } | |
2200 | new_modtime = new_statbuf.st_mtime; | |
2201 | if (new_modtime != objfile->mtime) | |
2202 | { | |
2203 | struct cleanup *old_cleanups; | |
2204 | struct section_offsets *offsets; | |
2205 | int num_offsets; | |
2206 | char *obfd_filename; | |
2207 | ||
2208 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2209 | objfile->name); | |
2210 | ||
2211 | /* There are various functions like symbol_file_add, | |
2212 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2213 | appear to do what we want. But they have various other | |
2214 | effects which we *don't* want. So we just do stuff | |
2215 | ourselves. We don't worry about mapped files (for one thing, | |
2216 | any mapped file will be out of date). */ | |
2217 | ||
2218 | /* If we get an error, blow away this objfile (not sure if | |
2219 | that is the correct response for things like shared | |
2220 | libraries). */ | |
2221 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2222 | /* We need to do this whenever any symbols go away. */ | |
2223 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2224 | ||
2225 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), | |
2226 | bfd_get_filename (exec_bfd)) == 0) | |
2227 | { | |
2228 | /* Reload EXEC_BFD without asking anything. */ | |
2229 | ||
2230 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2231 | } | |
2232 | ||
2233 | /* Clean up any state BFD has sitting around. We don't need | |
2234 | to close the descriptor but BFD lacks a way of closing the | |
2235 | BFD without closing the descriptor. */ | |
2236 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2237 | if (!bfd_close (objfile->obfd)) | |
2238 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2239 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2240 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2241 | if (objfile->obfd == NULL) |
2242 | error (_("Can't open %s to read symbols."), objfile->name); | |
2243 | else | |
2244 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2245 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2246 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2247 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2248 | bfd_errmsg (bfd_get_error ())); | |
2249 | ||
2250 | /* Save the offsets, we will nuke them with the rest of the | |
2251 | objfile_obstack. */ | |
2252 | num_offsets = objfile->num_sections; | |
2253 | offsets = ((struct section_offsets *) | |
2254 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2255 | memcpy (offsets, objfile->section_offsets, | |
2256 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2257 | ||
2258 | /* Remove any references to this objfile in the global | |
2259 | value lists. */ | |
2260 | preserve_values (objfile); | |
2261 | ||
2262 | /* Nuke all the state that we will re-read. Much of the following | |
2263 | code which sets things to NULL really is necessary to tell | |
2264 | other parts of GDB that there is nothing currently there. | |
2265 | ||
2266 | Try to keep the freeing order compatible with free_objfile. */ | |
2267 | ||
2268 | if (objfile->sf != NULL) | |
2269 | { | |
2270 | (*objfile->sf->sym_finish) (objfile); | |
2271 | } | |
2272 | ||
2273 | clear_objfile_data (objfile); | |
2274 | ||
2275 | /* Free the separate debug objfile if there is one. It will be | |
2276 | automatically recreated by sym_read. */ | |
2277 | if (objfile->separate_debug_objfile) | |
2278 | { | |
2279 | /* Note: no need to clear separate_debug_objfile field as it is | |
2280 | done by free_objfile. */ | |
2281 | free_objfile (objfile->separate_debug_objfile); | |
2282 | } | |
2283 | ||
2284 | /* FIXME: Do we have to free a whole linked list, or is this | |
2285 | enough? */ | |
2286 | if (objfile->global_psymbols.list) | |
2287 | xfree (objfile->global_psymbols.list); | |
2288 | memset (&objfile->global_psymbols, 0, | |
2289 | sizeof (objfile->global_psymbols)); | |
2290 | if (objfile->static_psymbols.list) | |
2291 | xfree (objfile->static_psymbols.list); | |
2292 | memset (&objfile->static_psymbols, 0, | |
2293 | sizeof (objfile->static_psymbols)); | |
2294 | ||
2295 | /* Free the obstacks for non-reusable objfiles */ | |
2296 | bcache_xfree (objfile->psymbol_cache); | |
2297 | objfile->psymbol_cache = bcache_xmalloc (); | |
2298 | bcache_xfree (objfile->macro_cache); | |
2299 | objfile->macro_cache = bcache_xmalloc (); | |
2300 | bcache_xfree (objfile->filename_cache); | |
2301 | objfile->filename_cache = bcache_xmalloc (); | |
2302 | if (objfile->demangled_names_hash != NULL) | |
2303 | { | |
2304 | htab_delete (objfile->demangled_names_hash); | |
2305 | objfile->demangled_names_hash = NULL; | |
2306 | } | |
2307 | obstack_free (&objfile->objfile_obstack, 0); | |
2308 | objfile->sections = NULL; | |
2309 | objfile->symtabs = NULL; | |
2310 | objfile->psymtabs = NULL; | |
2311 | objfile->psymtabs_addrmap = NULL; | |
2312 | objfile->free_psymtabs = NULL; | |
2313 | objfile->cp_namespace_symtab = NULL; | |
2314 | objfile->msymbols = NULL; | |
2315 | objfile->deprecated_sym_private = NULL; | |
2316 | objfile->minimal_symbol_count = 0; | |
2317 | memset (&objfile->msymbol_hash, 0, | |
2318 | sizeof (objfile->msymbol_hash)); | |
2319 | memset (&objfile->msymbol_demangled_hash, 0, | |
2320 | sizeof (objfile->msymbol_demangled_hash)); | |
2321 | ||
2322 | objfile->psymbol_cache = bcache_xmalloc (); | |
2323 | objfile->macro_cache = bcache_xmalloc (); | |
2324 | objfile->filename_cache = bcache_xmalloc (); | |
2325 | /* obstack_init also initializes the obstack so it is | |
2326 | empty. We could use obstack_specify_allocation but | |
2327 | gdb_obstack.h specifies the alloc/dealloc | |
2328 | functions. */ | |
2329 | obstack_init (&objfile->objfile_obstack); | |
2330 | if (build_objfile_section_table (objfile)) | |
2331 | { | |
2332 | error (_("Can't find the file sections in `%s': %s"), | |
2333 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2334 | } | |
2335 | terminate_minimal_symbol_table (objfile); | |
2336 | ||
2337 | /* We use the same section offsets as from last time. I'm not | |
2338 | sure whether that is always correct for shared libraries. */ | |
2339 | objfile->section_offsets = (struct section_offsets *) | |
2340 | obstack_alloc (&objfile->objfile_obstack, | |
2341 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2342 | memcpy (objfile->section_offsets, offsets, | |
2343 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2344 | objfile->num_sections = num_offsets; | |
2345 | ||
2346 | /* What the hell is sym_new_init for, anyway? The concept of | |
2347 | distinguishing between the main file and additional files | |
2348 | in this way seems rather dubious. */ | |
2349 | if (objfile == symfile_objfile) | |
c906108c | 2350 | { |
9cce227f | 2351 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2352 | } |
9cce227f TG |
2353 | |
2354 | (*objfile->sf->sym_init) (objfile); | |
2355 | clear_complaints (&symfile_complaints, 1, 1); | |
2356 | /* Do not set flags as this is safe and we don't want to be | |
2357 | verbose. */ | |
2358 | (*objfile->sf->sym_read) (objfile, 0); | |
2359 | if (!objfile_has_symbols (objfile)) | |
c906108c | 2360 | { |
9cce227f TG |
2361 | wrap_here (""); |
2362 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2363 | wrap_here (""); | |
c5aa993b | 2364 | } |
9cce227f TG |
2365 | |
2366 | /* We're done reading the symbol file; finish off complaints. */ | |
2367 | clear_complaints (&symfile_complaints, 0, 1); | |
2368 | ||
2369 | /* Getting new symbols may change our opinion about what is | |
2370 | frameless. */ | |
2371 | ||
2372 | reinit_frame_cache (); | |
2373 | ||
2374 | /* Discard cleanups as symbol reading was successful. */ | |
2375 | discard_cleanups (old_cleanups); | |
2376 | ||
2377 | /* If the mtime has changed between the time we set new_modtime | |
2378 | and now, we *want* this to be out of date, so don't call stat | |
2379 | again now. */ | |
2380 | objfile->mtime = new_modtime; | |
2381 | reread_one = 1; | |
2382 | init_entry_point_info (objfile); | |
c906108c SS |
2383 | } |
2384 | } | |
c906108c SS |
2385 | |
2386 | if (reread_one) | |
ea53e89f | 2387 | { |
ff3536bc UW |
2388 | /* Notify objfiles that we've modified objfile sections. */ |
2389 | objfiles_changed (); | |
2390 | ||
ea53e89f JB |
2391 | clear_symtab_users (); |
2392 | /* At least one objfile has changed, so we can consider that | |
2393 | the executable we're debugging has changed too. */ | |
781b42b0 | 2394 | observer_notify_executable_changed (); |
ea53e89f | 2395 | } |
c906108c | 2396 | } |
c906108c SS |
2397 | \f |
2398 | ||
c5aa993b JM |
2399 | |
2400 | typedef struct | |
2401 | { | |
2402 | char *ext; | |
c906108c | 2403 | enum language lang; |
c5aa993b JM |
2404 | } |
2405 | filename_language; | |
c906108c | 2406 | |
c5aa993b | 2407 | static filename_language *filename_language_table; |
c906108c SS |
2408 | static int fl_table_size, fl_table_next; |
2409 | ||
2410 | static void | |
fba45db2 | 2411 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2412 | { |
2413 | if (fl_table_next >= fl_table_size) | |
2414 | { | |
2415 | fl_table_size += 10; | |
5417f6dc | 2416 | filename_language_table = |
25bf3106 PM |
2417 | xrealloc (filename_language_table, |
2418 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2419 | } |
2420 | ||
4fcf66da | 2421 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2422 | filename_language_table[fl_table_next].lang = lang; |
2423 | fl_table_next++; | |
2424 | } | |
2425 | ||
2426 | static char *ext_args; | |
920d2a44 AC |
2427 | static void |
2428 | show_ext_args (struct ui_file *file, int from_tty, | |
2429 | struct cmd_list_element *c, const char *value) | |
2430 | { | |
2431 | fprintf_filtered (file, _("\ | |
2432 | Mapping between filename extension and source language is \"%s\".\n"), | |
2433 | value); | |
2434 | } | |
c906108c SS |
2435 | |
2436 | static void | |
26c41df3 | 2437 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2438 | { |
2439 | int i; | |
2440 | char *cp = ext_args; | |
2441 | enum language lang; | |
2442 | ||
2443 | /* First arg is filename extension, starting with '.' */ | |
2444 | if (*cp != '.') | |
8a3fe4f8 | 2445 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2446 | |
2447 | /* Find end of first arg. */ | |
c5aa993b | 2448 | while (*cp && !isspace (*cp)) |
c906108c SS |
2449 | cp++; |
2450 | ||
2451 | if (*cp == '\0') | |
8a3fe4f8 | 2452 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2453 | ext_args); |
2454 | ||
2455 | /* Null-terminate first arg */ | |
c5aa993b | 2456 | *cp++ = '\0'; |
c906108c SS |
2457 | |
2458 | /* Find beginning of second arg, which should be a source language. */ | |
2459 | while (*cp && isspace (*cp)) | |
2460 | cp++; | |
2461 | ||
2462 | if (*cp == '\0') | |
8a3fe4f8 | 2463 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2464 | ext_args); |
2465 | ||
2466 | /* Lookup the language from among those we know. */ | |
2467 | lang = language_enum (cp); | |
2468 | ||
2469 | /* Now lookup the filename extension: do we already know it? */ | |
2470 | for (i = 0; i < fl_table_next; i++) | |
2471 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2472 | break; | |
2473 | ||
2474 | if (i >= fl_table_next) | |
2475 | { | |
2476 | /* new file extension */ | |
2477 | add_filename_language (ext_args, lang); | |
2478 | } | |
2479 | else | |
2480 | { | |
2481 | /* redefining a previously known filename extension */ | |
2482 | ||
2483 | /* if (from_tty) */ | |
2484 | /* query ("Really make files of type %s '%s'?", */ | |
2485 | /* ext_args, language_str (lang)); */ | |
2486 | ||
b8c9b27d | 2487 | xfree (filename_language_table[i].ext); |
4fcf66da | 2488 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2489 | filename_language_table[i].lang = lang; |
2490 | } | |
2491 | } | |
2492 | ||
2493 | static void | |
fba45db2 | 2494 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2495 | { |
2496 | int i; | |
2497 | ||
a3f17187 | 2498 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2499 | printf_filtered ("\n\n"); |
2500 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2501 | printf_filtered ("\t%s\t- %s\n", |
2502 | filename_language_table[i].ext, | |
c906108c SS |
2503 | language_str (filename_language_table[i].lang)); |
2504 | } | |
2505 | ||
2506 | static void | |
fba45db2 | 2507 | init_filename_language_table (void) |
c906108c SS |
2508 | { |
2509 | if (fl_table_size == 0) /* protect against repetition */ | |
2510 | { | |
2511 | fl_table_size = 20; | |
2512 | fl_table_next = 0; | |
c5aa993b | 2513 | filename_language_table = |
c906108c | 2514 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2515 | add_filename_language (".c", language_c); |
2516 | add_filename_language (".C", language_cplus); | |
2517 | add_filename_language (".cc", language_cplus); | |
2518 | add_filename_language (".cp", language_cplus); | |
2519 | add_filename_language (".cpp", language_cplus); | |
2520 | add_filename_language (".cxx", language_cplus); | |
2521 | add_filename_language (".c++", language_cplus); | |
2522 | add_filename_language (".java", language_java); | |
c906108c | 2523 | add_filename_language (".class", language_java); |
da2cf7e0 | 2524 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2525 | add_filename_language (".f", language_fortran); |
2526 | add_filename_language (".F", language_fortran); | |
2527 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2528 | add_filename_language (".sx", language_asm); |
c5aa993b | 2529 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2530 | add_filename_language (".pas", language_pascal); |
2531 | add_filename_language (".p", language_pascal); | |
2532 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2533 | add_filename_language (".adb", language_ada); |
2534 | add_filename_language (".ads", language_ada); | |
2535 | add_filename_language (".a", language_ada); | |
2536 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2537 | } |
2538 | } | |
2539 | ||
2540 | enum language | |
fba45db2 | 2541 | deduce_language_from_filename (char *filename) |
c906108c SS |
2542 | { |
2543 | int i; | |
2544 | char *cp; | |
2545 | ||
2546 | if (filename != NULL) | |
2547 | if ((cp = strrchr (filename, '.')) != NULL) | |
2548 | for (i = 0; i < fl_table_next; i++) | |
2549 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2550 | return filename_language_table[i].lang; | |
2551 | ||
2552 | return language_unknown; | |
2553 | } | |
2554 | \f | |
2555 | /* allocate_symtab: | |
2556 | ||
2557 | Allocate and partly initialize a new symbol table. Return a pointer | |
2558 | to it. error() if no space. | |
2559 | ||
2560 | Caller must set these fields: | |
c5aa993b JM |
2561 | LINETABLE(symtab) |
2562 | symtab->blockvector | |
2563 | symtab->dirname | |
2564 | symtab->free_code | |
2565 | symtab->free_ptr | |
2566 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2567 | */ |
2568 | ||
2569 | struct symtab * | |
fba45db2 | 2570 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2571 | { |
52f0bd74 | 2572 | struct symtab *symtab; |
c906108c SS |
2573 | |
2574 | symtab = (struct symtab *) | |
4a146b47 | 2575 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2576 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2577 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2578 | objfile->filename_cache); | |
c5aa993b JM |
2579 | symtab->fullname = NULL; |
2580 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2581 | symtab->debugformat = "unknown"; |
c906108c SS |
2582 | |
2583 | /* Hook it to the objfile it comes from */ | |
2584 | ||
c5aa993b JM |
2585 | symtab->objfile = objfile; |
2586 | symtab->next = objfile->symtabs; | |
2587 | objfile->symtabs = symtab; | |
c906108c | 2588 | |
c906108c SS |
2589 | return (symtab); |
2590 | } | |
2591 | ||
2592 | struct partial_symtab * | |
d85a05f0 | 2593 | allocate_psymtab (const char *filename, struct objfile *objfile) |
c906108c SS |
2594 | { |
2595 | struct partial_symtab *psymtab; | |
2596 | ||
c5aa993b | 2597 | if (objfile->free_psymtabs) |
c906108c | 2598 | { |
c5aa993b JM |
2599 | psymtab = objfile->free_psymtabs; |
2600 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2601 | } |
2602 | else | |
2603 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2604 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2605 | sizeof (struct partial_symtab)); |
2606 | ||
2607 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
10abe6bf TT |
2608 | psymtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2609 | objfile->filename_cache); | |
c5aa993b | 2610 | psymtab->symtab = NULL; |
c906108c SS |
2611 | |
2612 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2613 | Psymtabs are searched in most recent inserted -> least recent | |
2614 | inserted order. */ | |
2615 | ||
c5aa993b JM |
2616 | psymtab->objfile = objfile; |
2617 | psymtab->next = objfile->psymtabs; | |
2618 | objfile->psymtabs = psymtab; | |
c906108c SS |
2619 | #if 0 |
2620 | { | |
2621 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2622 | psymtab->objfile = objfile; |
2623 | psymtab->next = NULL; | |
2624 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2625 | while ((*prev_pst) != NULL) |
c5aa993b | 2626 | prev_pst = &((*prev_pst)->next); |
c906108c | 2627 | (*prev_pst) = psymtab; |
c5aa993b | 2628 | } |
c906108c | 2629 | #endif |
c5aa993b | 2630 | |
c906108c SS |
2631 | return (psymtab); |
2632 | } | |
2633 | ||
2634 | void | |
fba45db2 | 2635 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2636 | { |
2637 | struct partial_symtab **prev_pst; | |
2638 | ||
2639 | /* From dbxread.c: | |
2640 | Empty psymtabs happen as a result of header files which don't | |
2641 | have any symbols in them. There can be a lot of them. But this | |
2642 | check is wrong, in that a psymtab with N_SLINE entries but | |
2643 | nothing else is not empty, but we don't realize that. Fixing | |
2644 | that without slowing things down might be tricky. */ | |
2645 | ||
2646 | /* First, snip it out of the psymtab chain */ | |
2647 | ||
2648 | prev_pst = &(pst->objfile->psymtabs); | |
2649 | while ((*prev_pst) != pst) | |
2650 | prev_pst = &((*prev_pst)->next); | |
2651 | (*prev_pst) = pst->next; | |
2652 | ||
2653 | /* Next, put it on a free list for recycling */ | |
2654 | ||
2655 | pst->next = pst->objfile->free_psymtabs; | |
2656 | pst->objfile->free_psymtabs = pst; | |
2657 | } | |
c906108c | 2658 | \f |
c5aa993b | 2659 | |
c906108c SS |
2660 | /* Reset all data structures in gdb which may contain references to symbol |
2661 | table data. */ | |
2662 | ||
2663 | void | |
fba45db2 | 2664 | clear_symtab_users (void) |
c906108c SS |
2665 | { |
2666 | /* Someday, we should do better than this, by only blowing away | |
2667 | the things that really need to be blown. */ | |
c0501be5 DJ |
2668 | |
2669 | /* Clear the "current" symtab first, because it is no longer valid. | |
2670 | breakpoint_re_set may try to access the current symtab. */ | |
2671 | clear_current_source_symtab_and_line (); | |
2672 | ||
c906108c | 2673 | clear_displays (); |
c906108c | 2674 | breakpoint_re_set (); |
6c95b8df | 2675 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2676 | clear_pc_function_cache (); |
06d3b283 | 2677 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2678 | |
2679 | /* Clear globals which might have pointed into a removed objfile. | |
2680 | FIXME: It's not clear which of these are supposed to persist | |
2681 | between expressions and which ought to be reset each time. */ | |
2682 | expression_context_block = NULL; | |
2683 | innermost_block = NULL; | |
8756216b DP |
2684 | |
2685 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2686 | varobj_invalidate (); | |
2687 | ||
c906108c SS |
2688 | } |
2689 | ||
74b7792f AC |
2690 | static void |
2691 | clear_symtab_users_cleanup (void *ignore) | |
2692 | { | |
2693 | clear_symtab_users (); | |
2694 | } | |
2695 | ||
c906108c SS |
2696 | /* clear_symtab_users_once: |
2697 | ||
2698 | This function is run after symbol reading, or from a cleanup. | |
2699 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2700 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2701 | reference it have not yet been cleared or re-directed. (The old |
2702 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2703 | below.) | |
2704 | ||
2705 | This function can be queued N times as a cleanup, or called | |
2706 | directly; it will do all the work the first time, and then will be a | |
2707 | no-op until the next time it is queued. This works by bumping a | |
2708 | counter at queueing time. Much later when the cleanup is run, or at | |
2709 | the end of symbol processing (in case the cleanup is discarded), if | |
2710 | the queued count is greater than the "done-count", we do the work | |
2711 | and set the done-count to the queued count. If the queued count is | |
2712 | less than or equal to the done-count, we just ignore the call. This | |
2713 | is needed because reading a single .o file will often replace many | |
2714 | symtabs (one per .h file, for example), and we don't want to reset | |
2715 | the breakpoints N times in the user's face. | |
2716 | ||
2717 | The reason we both queue a cleanup, and call it directly after symbol | |
2718 | reading, is because the cleanup protects us in case of errors, but is | |
2719 | discarded if symbol reading is successful. */ | |
2720 | ||
2721 | #if 0 | |
2722 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2723 | is no longer needed. */ | |
a14ed312 | 2724 | static void clear_symtab_users_once (void); |
c906108c SS |
2725 | |
2726 | static int clear_symtab_users_queued; | |
2727 | static int clear_symtab_users_done; | |
2728 | ||
2729 | static void | |
fba45db2 | 2730 | clear_symtab_users_once (void) |
c906108c SS |
2731 | { |
2732 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2733 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2734 | return; | |
2735 | clear_symtab_users_done = clear_symtab_users_queued; | |
2736 | ||
2737 | clear_symtab_users (); | |
2738 | } | |
2739 | #endif | |
2740 | ||
2741 | /* Delete the specified psymtab, and any others that reference it. */ | |
2742 | ||
2743 | static void | |
fba45db2 | 2744 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2745 | { |
2746 | struct partial_symtab *ps, *pprev = NULL; | |
2747 | int i; | |
2748 | ||
2749 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2750 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2751 | { | |
2752 | if (ps == pst) | |
2753 | break; | |
2754 | pprev = ps; | |
2755 | } | |
c906108c | 2756 | |
c5aa993b JM |
2757 | if (ps) |
2758 | { | |
2759 | /* Unhook it from the chain. */ | |
2760 | if (ps == pst->objfile->psymtabs) | |
2761 | pst->objfile->psymtabs = ps->next; | |
2762 | else | |
2763 | pprev->next = ps->next; | |
2764 | ||
2765 | /* FIXME, we can't conveniently deallocate the entries in the | |
2766 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2767 | this psymtab points to. These just take up space until all | |
2768 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2769 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2770 | |
2771 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2772 | again: | |
2773 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2774 | { | |
2775 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2776 | { | |
2777 | if (ps->dependencies[i] == pst) | |
2778 | { | |
2779 | cashier_psymtab (ps); | |
2780 | goto again; /* Must restart, chain has been munged. */ | |
2781 | } | |
2782 | } | |
c906108c | 2783 | } |
c906108c | 2784 | } |
c906108c SS |
2785 | } |
2786 | ||
2787 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2788 | with any dependent breakpoints, displays, etc. | |
2789 | Used when loading new versions of object modules with the "add-file" | |
2790 | command. This is only called on the top-level symtab or psymtab's name; | |
2791 | it is not called for subsidiary files such as .h files. | |
2792 | ||
2793 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2794 | FIXME. The return value appears to never be used. |
c906108c SS |
2795 | |
2796 | FIXME. I think this is not the best way to do this. We should | |
2797 | work on being gentler to the environment while still cleaning up | |
2798 | all stray pointers into the freed symtab. */ | |
2799 | ||
2800 | int | |
fba45db2 | 2801 | free_named_symtabs (char *name) |
c906108c SS |
2802 | { |
2803 | #if 0 | |
2804 | /* FIXME: With the new method of each objfile having it's own | |
2805 | psymtab list, this function needs serious rethinking. In particular, | |
2806 | why was it ever necessary to toss psymtabs with specific compilation | |
2807 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2808 | file? -- fnf | |
2809 | Well, the answer is that some systems permit reloading of particular | |
2810 | compilation units. We want to blow away any old info about these | |
2811 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2812 | ||
52f0bd74 AC |
2813 | struct symtab *s; |
2814 | struct symtab *prev; | |
2815 | struct partial_symtab *ps; | |
c906108c SS |
2816 | struct blockvector *bv; |
2817 | int blewit = 0; | |
2818 | ||
2819 | /* We only wack things if the symbol-reload switch is set. */ | |
2820 | if (!symbol_reloading) | |
2821 | return 0; | |
2822 | ||
2823 | /* Some symbol formats have trouble providing file names... */ | |
2824 | if (name == 0 || *name == '\0') | |
2825 | return 0; | |
2826 | ||
2827 | /* Look for a psymtab with the specified name. */ | |
2828 | ||
2829 | again2: | |
c5aa993b JM |
2830 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2831 | { | |
6314a349 | 2832 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2833 | { |
2834 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2835 | goto again2; /* Must restart, chain has been munged */ | |
2836 | } | |
c906108c | 2837 | } |
c906108c SS |
2838 | |
2839 | /* Look for a symtab with the specified name. */ | |
2840 | ||
2841 | for (s = symtab_list; s; s = s->next) | |
2842 | { | |
6314a349 | 2843 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2844 | break; |
2845 | prev = s; | |
2846 | } | |
2847 | ||
2848 | if (s) | |
2849 | { | |
2850 | if (s == symtab_list) | |
2851 | symtab_list = s->next; | |
2852 | else | |
2853 | prev->next = s->next; | |
2854 | ||
2855 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2856 | or not they depend on the symtab being freed. This should be |
2857 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2858 | |
2859 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2860 | This test is necessary due to a bug in "dbxread.c" that |
2861 | causes empty symtabs to be created for N_SO symbols that | |
2862 | contain the pathname of the object file. (This problem | |
2863 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2864 | |
2865 | bv = BLOCKVECTOR (s); | |
2866 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2867 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2868 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2869 | { | |
e2e0b3e5 | 2870 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 2871 | name); |
c906108c SS |
2872 | clear_symtab_users_queued++; |
2873 | make_cleanup (clear_symtab_users_once, 0); | |
2874 | blewit = 1; | |
c5aa993b JM |
2875 | } |
2876 | else | |
e2e0b3e5 AC |
2877 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
2878 | name); | |
c906108c SS |
2879 | |
2880 | free_symtab (s); | |
2881 | } | |
2882 | else | |
2883 | { | |
2884 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2885 | even though no symtab was found, since the file might have |
2886 | been compiled without debugging, and hence not be associated | |
2887 | with a symtab. In order to handle this correctly, we would need | |
2888 | to keep a list of text address ranges for undebuggable files. | |
2889 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2890 | ; |
2891 | } | |
2892 | ||
2893 | /* FIXME, what about the minimal symbol table? */ | |
2894 | return blewit; | |
2895 | #else | |
2896 | return (0); | |
2897 | #endif | |
2898 | } | |
2899 | \f | |
2900 | /* Allocate and partially fill a partial symtab. It will be | |
2901 | completely filled at the end of the symbol list. | |
2902 | ||
d4f3574e | 2903 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2904 | |
2905 | struct partial_symtab * | |
fba45db2 | 2906 | start_psymtab_common (struct objfile *objfile, |
d85a05f0 DJ |
2907 | struct section_offsets *section_offsets, |
2908 | const char *filename, | |
fba45db2 KB |
2909 | CORE_ADDR textlow, struct partial_symbol **global_syms, |
2910 | struct partial_symbol **static_syms) | |
c906108c SS |
2911 | { |
2912 | struct partial_symtab *psymtab; | |
2913 | ||
2914 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2915 | psymtab->section_offsets = section_offsets; |
2916 | psymtab->textlow = textlow; | |
2917 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2918 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2919 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2920 | return (psymtab); |
2921 | } | |
2922 | \f | |
2e618c13 AR |
2923 | /* Helper function, initialises partial symbol structure and stashes |
2924 | it into objfile's bcache. Note that our caching mechanism will | |
2925 | use all fields of struct partial_symbol to determine hash value of the | |
2926 | structure. In other words, having two symbols with the same name but | |
2927 | different domain (or address) is possible and correct. */ | |
2928 | ||
11d31d94 | 2929 | static const struct partial_symbol * |
04a679b8 TT |
2930 | add_psymbol_to_bcache (char *name, int namelength, int copy_name, |
2931 | domain_enum domain, | |
2e618c13 AR |
2932 | enum address_class class, |
2933 | long val, /* Value as a long */ | |
2934 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2935 | enum language language, struct objfile *objfile, | |
2936 | int *added) | |
2937 | { | |
69a943f0 TT |
2938 | /* psymbol is static so that there will be no uninitialized gaps in the |
2939 | structure which might contain random data, causing cache misses in | |
2940 | bcache. */ | |
2941 | static struct partial_symbol psymbol; | |
2942 | ||
2943 | /* However, we must ensure that the entire 'value' field has been | |
2944 | zeroed before assigning to it, because an assignment may not | |
2945 | write the entire field. */ | |
2946 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
2e618c13 AR |
2947 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2948 | if (val != 0) | |
2949 | { | |
2950 | SYMBOL_VALUE (&psymbol) = val; | |
2951 | } | |
2952 | else | |
2953 | { | |
2954 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2955 | } | |
2956 | SYMBOL_SECTION (&psymbol) = 0; | |
2957 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2958 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
2959 | PSYMBOL_CLASS (&psymbol) = class; | |
2960 | ||
04a679b8 | 2961 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); |
2e618c13 AR |
2962 | |
2963 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
2964 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
2965 | objfile->psymbol_cache, added); | |
2e618c13 AR |
2966 | } |
2967 | ||
2968 | /* Helper function, adds partial symbol to the given partial symbol | |
2969 | list. */ | |
2970 | ||
2971 | static void | |
2972 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 2973 | const struct partial_symbol *psym, |
2e618c13 AR |
2974 | struct objfile *objfile) |
2975 | { | |
2976 | if (list->next >= list->list + list->size) | |
2977 | extend_psymbol_list (list, objfile); | |
11d31d94 | 2978 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
2979 | OBJSTAT (objfile, n_psyms++); |
2980 | } | |
2981 | ||
c906108c | 2982 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 2983 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
2984 | Return the partial symbol that has been added. */ |
2985 | ||
2986 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
2987 | symbol is so that callers can get access to the symbol's demangled | |
2988 | name, which they don't have any cheap way to determine otherwise. | |
2989 | (Currenly, dwarf2read.c is the only file who uses that information, | |
2990 | though it's possible that other readers might in the future.) | |
2991 | Elena wasn't thrilled about that, and I don't blame her, but we | |
2992 | couldn't come up with a better way to get that information. If | |
2993 | it's needed in other situations, we could consider breaking up | |
2994 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
2995 | cache. */ | |
2996 | ||
2997 | const struct partial_symbol * | |
04a679b8 TT |
2998 | add_psymbol_to_list (char *name, int namelength, int copy_name, |
2999 | domain_enum domain, | |
fba45db2 | 3000 | enum address_class class, |
2e618c13 AR |
3001 | struct psymbol_allocation_list *list, |
3002 | long val, /* Value as a long */ | |
fba45db2 KB |
3003 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
3004 | enum language language, struct objfile *objfile) | |
c906108c | 3005 | { |
11d31d94 | 3006 | const struct partial_symbol *psym; |
2de7ced7 | 3007 | |
2e618c13 | 3008 | int added; |
c906108c SS |
3009 | |
3010 | /* Stash the partial symbol away in the cache */ | |
04a679b8 | 3011 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, |
2e618c13 | 3012 | val, coreaddr, language, objfile, &added); |
c906108c | 3013 | |
2e618c13 AR |
3014 | /* Do not duplicate global partial symbols. */ |
3015 | if (list == &objfile->global_psymbols | |
3016 | && !added) | |
3017 | return psym; | |
5c4e30ca | 3018 | |
2e618c13 AR |
3019 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
3020 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 3021 | return psym; |
c906108c SS |
3022 | } |
3023 | ||
c906108c SS |
3024 | /* Initialize storage for partial symbols. */ |
3025 | ||
3026 | void | |
fba45db2 | 3027 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
3028 | { |
3029 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
3030 | |
3031 | if (objfile->global_psymbols.list) | |
c906108c | 3032 | { |
2dc74dc1 | 3033 | xfree (objfile->global_psymbols.list); |
c906108c | 3034 | } |
c5aa993b | 3035 | if (objfile->static_psymbols.list) |
c906108c | 3036 | { |
2dc74dc1 | 3037 | xfree (objfile->static_psymbols.list); |
c906108c | 3038 | } |
c5aa993b | 3039 | |
c906108c SS |
3040 | /* Current best guess is that approximately a twentieth |
3041 | of the total symbols (in a debugging file) are global or static | |
3042 | oriented symbols */ | |
c906108c | 3043 | |
c5aa993b JM |
3044 | objfile->global_psymbols.size = total_symbols / 10; |
3045 | objfile->static_psymbols.size = total_symbols / 10; | |
3046 | ||
3047 | if (objfile->global_psymbols.size > 0) | |
c906108c | 3048 | { |
c5aa993b JM |
3049 | objfile->global_psymbols.next = |
3050 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3051 | xmalloc ((objfile->global_psymbols.size |
3052 | * sizeof (struct partial_symbol *))); | |
c906108c | 3053 | } |
c5aa993b | 3054 | if (objfile->static_psymbols.size > 0) |
c906108c | 3055 | { |
c5aa993b JM |
3056 | objfile->static_psymbols.next = |
3057 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3058 | xmalloc ((objfile->static_psymbols.size |
3059 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
3060 | } |
3061 | } | |
3062 | ||
3063 | /* OVERLAYS: | |
3064 | The following code implements an abstraction for debugging overlay sections. | |
3065 | ||
3066 | The target model is as follows: | |
3067 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3068 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3069 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3070 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3071 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3072 | sections should be considered to be mapped from the VMA to the LMA. |
3073 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3074 | For instance, if a section has been mapped then its contents |
c5aa993b | 3075 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3076 | |
3077 | Two levels of debugger support for overlays are available. One is | |
3078 | "manual", in which the debugger relies on the user to tell it which | |
3079 | overlays are currently mapped. This level of support is | |
3080 | implemented entirely in the core debugger, and the information about | |
3081 | whether a section is mapped is kept in the objfile->obj_section table. | |
3082 | ||
3083 | The second level of support is "automatic", and is only available if | |
3084 | the target-specific code provides functionality to read the target's | |
3085 | overlay mapping table, and translate its contents for the debugger | |
3086 | (by updating the mapped state information in the obj_section tables). | |
3087 | ||
3088 | The interface is as follows: | |
c5aa993b JM |
3089 | User commands: |
3090 | overlay map <name> -- tell gdb to consider this section mapped | |
3091 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3092 | overlay list -- list the sections that GDB thinks are mapped | |
3093 | overlay read-target -- get the target's state of what's mapped | |
3094 | overlay off/manual/auto -- set overlay debugging state | |
3095 | Functional interface: | |
3096 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3097 | section, return that section. | |
5417f6dc | 3098 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 3099 | the pc, either in its VMA or its LMA |
714835d5 | 3100 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
3101 | section_is_overlay(sect): true if section's VMA != LMA |
3102 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3103 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3104 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3105 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3106 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3107 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3108 | either in VMA or LMA depending on whether | |
3109 | the symbol's section is currently mapped | |
c906108c SS |
3110 | */ |
3111 | ||
3112 | /* Overlay debugging state: */ | |
3113 | ||
d874f1e2 | 3114 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3115 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3116 | ||
c906108c | 3117 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3118 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3119 | SECTION is loaded at an address different from where it will "run". */ |
3120 | ||
3121 | int | |
714835d5 | 3122 | section_is_overlay (struct obj_section *section) |
c906108c | 3123 | { |
714835d5 UW |
3124 | if (overlay_debugging && section) |
3125 | { | |
3126 | bfd *abfd = section->objfile->obfd; | |
3127 | asection *bfd_section = section->the_bfd_section; | |
3128 | ||
3129 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
3130 | && bfd_section_lma (abfd, bfd_section) | |
3131 | != bfd_section_vma (abfd, bfd_section)) | |
3132 | return 1; | |
3133 | } | |
c906108c SS |
3134 | |
3135 | return 0; | |
3136 | } | |
3137 | ||
3138 | /* Function: overlay_invalidate_all (void) | |
3139 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3140 | ||
3141 | static void | |
fba45db2 | 3142 | overlay_invalidate_all (void) |
c906108c | 3143 | { |
c5aa993b | 3144 | struct objfile *objfile; |
c906108c SS |
3145 | struct obj_section *sect; |
3146 | ||
3147 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
3148 | if (section_is_overlay (sect)) |
3149 | sect->ovly_mapped = -1; | |
c906108c SS |
3150 | } |
3151 | ||
714835d5 | 3152 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3153 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3154 | |
3155 | Access to the ovly_mapped flag is restricted to this function, so | |
3156 | that we can do automatic update. If the global flag | |
3157 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3158 | overlay_invalidate_all. If the mapped state of the particular | |
3159 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3160 | ||
714835d5 UW |
3161 | int |
3162 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3163 | { |
9216df95 UW |
3164 | struct gdbarch *gdbarch; |
3165 | ||
714835d5 | 3166 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3167 | return 0; |
3168 | ||
c5aa993b | 3169 | switch (overlay_debugging) |
c906108c SS |
3170 | { |
3171 | default: | |
d874f1e2 | 3172 | case ovly_off: |
c5aa993b | 3173 | return 0; /* overlay debugging off */ |
d874f1e2 | 3174 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3175 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3176 | there's really nothing useful to do here (can't really go auto) */ |
9216df95 UW |
3177 | gdbarch = get_objfile_arch (osect->objfile); |
3178 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3179 | { |
3180 | if (overlay_cache_invalid) | |
3181 | { | |
3182 | overlay_invalidate_all (); | |
3183 | overlay_cache_invalid = 0; | |
3184 | } | |
3185 | if (osect->ovly_mapped == -1) | |
9216df95 | 3186 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
3187 | } |
3188 | /* fall thru to manual case */ | |
d874f1e2 | 3189 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3190 | return osect->ovly_mapped == 1; |
3191 | } | |
3192 | } | |
3193 | ||
c906108c SS |
3194 | /* Function: pc_in_unmapped_range |
3195 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3196 | ||
3197 | CORE_ADDR | |
714835d5 | 3198 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3199 | { |
714835d5 UW |
3200 | if (section_is_overlay (section)) |
3201 | { | |
3202 | bfd *abfd = section->objfile->obfd; | |
3203 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3204 | |
714835d5 UW |
3205 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3206 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3207 | CORE_ADDR offset = obj_section_offset (section); | |
3208 | ||
3209 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3210 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3211 | return 1; | |
3212 | } | |
c906108c | 3213 | |
c906108c SS |
3214 | return 0; |
3215 | } | |
3216 | ||
3217 | /* Function: pc_in_mapped_range | |
3218 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3219 | ||
3220 | CORE_ADDR | |
714835d5 | 3221 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3222 | { |
714835d5 UW |
3223 | if (section_is_overlay (section)) |
3224 | { | |
3225 | if (obj_section_addr (section) <= pc | |
3226 | && pc < obj_section_endaddr (section)) | |
3227 | return 1; | |
3228 | } | |
c906108c | 3229 | |
c906108c SS |
3230 | return 0; |
3231 | } | |
3232 | ||
9ec8e6a0 JB |
3233 | |
3234 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3235 | otherwise. */ | |
b9362cc7 | 3236 | static int |
714835d5 | 3237 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3238 | { |
714835d5 UW |
3239 | CORE_ADDR a_start = obj_section_addr (a); |
3240 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3241 | CORE_ADDR b_start = obj_section_addr (b); | |
3242 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3243 | |
3244 | return (a_start < b_end && b_start < a_end); | |
3245 | } | |
3246 | ||
c906108c SS |
3247 | /* Function: overlay_unmapped_address (PC, SECTION) |
3248 | Returns the address corresponding to PC in the unmapped (load) range. | |
3249 | May be the same as PC. */ | |
3250 | ||
3251 | CORE_ADDR | |
714835d5 | 3252 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3253 | { |
714835d5 UW |
3254 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3255 | { | |
3256 | bfd *abfd = section->objfile->obfd; | |
3257 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3258 | |
714835d5 UW |
3259 | return pc + bfd_section_lma (abfd, bfd_section) |
3260 | - bfd_section_vma (abfd, bfd_section); | |
3261 | } | |
c906108c SS |
3262 | |
3263 | return pc; | |
3264 | } | |
3265 | ||
3266 | /* Function: overlay_mapped_address (PC, SECTION) | |
3267 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3268 | May be the same as PC. */ | |
3269 | ||
3270 | CORE_ADDR | |
714835d5 | 3271 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3272 | { |
714835d5 UW |
3273 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3274 | { | |
3275 | bfd *abfd = section->objfile->obfd; | |
3276 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3277 | |
714835d5 UW |
3278 | return pc + bfd_section_vma (abfd, bfd_section) |
3279 | - bfd_section_lma (abfd, bfd_section); | |
3280 | } | |
c906108c SS |
3281 | |
3282 | return pc; | |
3283 | } | |
3284 | ||
3285 | ||
5417f6dc | 3286 | /* Function: symbol_overlayed_address |
c906108c SS |
3287 | Return one of two addresses (relative to the VMA or to the LMA), |
3288 | depending on whether the section is mapped or not. */ | |
3289 | ||
c5aa993b | 3290 | CORE_ADDR |
714835d5 | 3291 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3292 | { |
3293 | if (overlay_debugging) | |
3294 | { | |
3295 | /* If the symbol has no section, just return its regular address. */ | |
3296 | if (section == 0) | |
3297 | return address; | |
3298 | /* If the symbol's section is not an overlay, just return its address */ | |
3299 | if (!section_is_overlay (section)) | |
3300 | return address; | |
3301 | /* If the symbol's section is mapped, just return its address */ | |
3302 | if (section_is_mapped (section)) | |
3303 | return address; | |
3304 | /* | |
3305 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3306 | * then return its LOADED address rather than its vma address!! | |
3307 | */ | |
3308 | return overlay_unmapped_address (address, section); | |
3309 | } | |
3310 | return address; | |
3311 | } | |
3312 | ||
5417f6dc | 3313 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3314 | Return the best-match overlay section for PC: |
3315 | If PC matches a mapped overlay section's VMA, return that section. | |
3316 | Else if PC matches an unmapped section's VMA, return that section. | |
3317 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3318 | ||
714835d5 | 3319 | struct obj_section * |
fba45db2 | 3320 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3321 | { |
c5aa993b | 3322 | struct objfile *objfile; |
c906108c SS |
3323 | struct obj_section *osect, *best_match = NULL; |
3324 | ||
3325 | if (overlay_debugging) | |
3326 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3327 | if (section_is_overlay (osect)) |
c5aa993b | 3328 | { |
714835d5 | 3329 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3330 | { |
714835d5 UW |
3331 | if (section_is_mapped (osect)) |
3332 | return osect; | |
c5aa993b JM |
3333 | else |
3334 | best_match = osect; | |
3335 | } | |
714835d5 | 3336 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3337 | best_match = osect; |
3338 | } | |
714835d5 | 3339 | return best_match; |
c906108c SS |
3340 | } |
3341 | ||
3342 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3343 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3344 | currently marked as MAPPED, return that section. Else return NULL. */ |
3345 | ||
714835d5 | 3346 | struct obj_section * |
fba45db2 | 3347 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3348 | { |
c5aa993b | 3349 | struct objfile *objfile; |
c906108c SS |
3350 | struct obj_section *osect; |
3351 | ||
3352 | if (overlay_debugging) | |
3353 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3354 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3355 | return osect; | |
c906108c SS |
3356 | |
3357 | return NULL; | |
3358 | } | |
3359 | ||
3360 | /* Function: list_overlays_command | |
3361 | Print a list of mapped sections and their PC ranges */ | |
3362 | ||
3363 | void | |
fba45db2 | 3364 | list_overlays_command (char *args, int from_tty) |
c906108c | 3365 | { |
c5aa993b JM |
3366 | int nmapped = 0; |
3367 | struct objfile *objfile; | |
c906108c SS |
3368 | struct obj_section *osect; |
3369 | ||
3370 | if (overlay_debugging) | |
3371 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3372 | if (section_is_mapped (osect)) |
c5aa993b | 3373 | { |
5af949e3 | 3374 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3375 | const char *name; |
3376 | bfd_vma lma, vma; | |
3377 | int size; | |
3378 | ||
3379 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3380 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3381 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3382 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3383 | ||
3384 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3385 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3386 | puts_filtered (" - "); |
5af949e3 | 3387 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3388 | printf_filtered (", mapped at "); |
5af949e3 | 3389 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3390 | puts_filtered (" - "); |
5af949e3 | 3391 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3392 | puts_filtered ("\n"); |
3393 | ||
3394 | nmapped++; | |
3395 | } | |
c906108c | 3396 | if (nmapped == 0) |
a3f17187 | 3397 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3398 | } |
3399 | ||
3400 | /* Function: map_overlay_command | |
3401 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3402 | ||
3403 | void | |
fba45db2 | 3404 | map_overlay_command (char *args, int from_tty) |
c906108c | 3405 | { |
c5aa993b JM |
3406 | struct objfile *objfile, *objfile2; |
3407 | struct obj_section *sec, *sec2; | |
c906108c SS |
3408 | |
3409 | if (!overlay_debugging) | |
8a3fe4f8 | 3410 | error (_("\ |
515ad16c | 3411 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3412 | the 'overlay manual' command.")); |
c906108c SS |
3413 | |
3414 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3415 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3416 | |
3417 | /* First, find a section matching the user supplied argument */ | |
3418 | ALL_OBJSECTIONS (objfile, sec) | |
3419 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3420 | { |
3421 | /* Now, check to see if the section is an overlay. */ | |
714835d5 | 3422 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3423 | continue; /* not an overlay section */ |
3424 | ||
3425 | /* Mark the overlay as "mapped" */ | |
3426 | sec->ovly_mapped = 1; | |
3427 | ||
3428 | /* Next, make a pass and unmap any sections that are | |
3429 | overlapped by this new section: */ | |
3430 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3431 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3432 | { |
3433 | if (info_verbose) | |
a3f17187 | 3434 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3435 | bfd_section_name (objfile->obfd, |
3436 | sec2->the_bfd_section)); | |
3437 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3438 | } | |
3439 | return; | |
3440 | } | |
8a3fe4f8 | 3441 | error (_("No overlay section called %s"), args); |
c906108c SS |
3442 | } |
3443 | ||
3444 | /* Function: unmap_overlay_command | |
5417f6dc | 3445 | Mark the overlay section as unmapped |
c906108c SS |
3446 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3447 | ||
3448 | void | |
fba45db2 | 3449 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3450 | { |
c5aa993b | 3451 | struct objfile *objfile; |
c906108c SS |
3452 | struct obj_section *sec; |
3453 | ||
3454 | if (!overlay_debugging) | |
8a3fe4f8 | 3455 | error (_("\ |
515ad16c | 3456 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3457 | the 'overlay manual' command.")); |
c906108c SS |
3458 | |
3459 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3460 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3461 | |
3462 | /* First, find a section matching the user supplied argument */ | |
3463 | ALL_OBJSECTIONS (objfile, sec) | |
3464 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3465 | { |
3466 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3467 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3468 | sec->ovly_mapped = 0; |
3469 | return; | |
3470 | } | |
8a3fe4f8 | 3471 | error (_("No overlay section called %s"), args); |
c906108c SS |
3472 | } |
3473 | ||
3474 | /* Function: overlay_auto_command | |
3475 | A utility command to turn on overlay debugging. | |
3476 | Possibly this should be done via a set/show command. */ | |
3477 | ||
3478 | static void | |
fba45db2 | 3479 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3480 | { |
d874f1e2 | 3481 | overlay_debugging = ovly_auto; |
1900040c | 3482 | enable_overlay_breakpoints (); |
c906108c | 3483 | if (info_verbose) |
a3f17187 | 3484 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3485 | } |
3486 | ||
3487 | /* Function: overlay_manual_command | |
3488 | A utility command to turn on overlay debugging. | |
3489 | Possibly this should be done via a set/show command. */ | |
3490 | ||
3491 | static void | |
fba45db2 | 3492 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3493 | { |
d874f1e2 | 3494 | overlay_debugging = ovly_on; |
1900040c | 3495 | disable_overlay_breakpoints (); |
c906108c | 3496 | if (info_verbose) |
a3f17187 | 3497 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3498 | } |
3499 | ||
3500 | /* Function: overlay_off_command | |
3501 | A utility command to turn on overlay debugging. | |
3502 | Possibly this should be done via a set/show command. */ | |
3503 | ||
3504 | static void | |
fba45db2 | 3505 | overlay_off_command (char *args, int from_tty) |
c906108c | 3506 | { |
d874f1e2 | 3507 | overlay_debugging = ovly_off; |
1900040c | 3508 | disable_overlay_breakpoints (); |
c906108c | 3509 | if (info_verbose) |
a3f17187 | 3510 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3511 | } |
3512 | ||
3513 | static void | |
fba45db2 | 3514 | overlay_load_command (char *args, int from_tty) |
c906108c | 3515 | { |
e17c207e UW |
3516 | struct gdbarch *gdbarch = get_current_arch (); |
3517 | ||
3518 | if (gdbarch_overlay_update_p (gdbarch)) | |
3519 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3520 | else |
8a3fe4f8 | 3521 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3522 | } |
3523 | ||
3524 | /* Function: overlay_command | |
3525 | A place-holder for a mis-typed command */ | |
3526 | ||
3527 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3528 | struct cmd_list_element *overlaylist; | |
3529 | ||
3530 | static void | |
fba45db2 | 3531 | overlay_command (char *args, int from_tty) |
c906108c | 3532 | { |
c5aa993b | 3533 | printf_unfiltered |
c906108c SS |
3534 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3535 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3536 | } | |
3537 | ||
3538 | ||
3539 | /* Target Overlays for the "Simplest" overlay manager: | |
3540 | ||
5417f6dc RM |
3541 | This is GDB's default target overlay layer. It works with the |
3542 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3543 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3544 | so targets that use a different runtime overlay manager can |
c906108c SS |
3545 | substitute their own overlay_update function and take over the |
3546 | function pointer. | |
3547 | ||
3548 | The overlay_update function pokes around in the target's data structures | |
3549 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3550 | this information. | |
3551 | ||
3552 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3553 | unsigned _novlys; /# number of overlay sections #/ |
3554 | unsigned _ovly_table[_novlys][4] = { | |
3555 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3556 | {..., ..., ..., ...}, | |
3557 | } | |
3558 | unsigned _novly_regions; /# number of overlay regions #/ | |
3559 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3560 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3561 | {..., ..., ...}, | |
3562 | } | |
c906108c SS |
3563 | These functions will attempt to update GDB's mappedness state in the |
3564 | symbol section table, based on the target's mappedness state. | |
3565 | ||
3566 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3567 | attempt to detect when the cached copy is invalidated. The main | |
3568 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3569 | the cached table and re-reads only the entry for that section from | |
3570 | the target (whenever possible). | |
3571 | */ | |
3572 | ||
3573 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3574 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3575 | #if 0 |
c5aa993b | 3576 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3577 | #endif |
c5aa993b | 3578 | static unsigned cache_novlys = 0; |
c906108c | 3579 | #if 0 |
c5aa993b | 3580 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3581 | #endif |
3582 | static CORE_ADDR cache_ovly_table_base = 0; | |
3583 | #if 0 | |
3584 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3585 | #endif | |
c5aa993b JM |
3586 | enum ovly_index |
3587 | { | |
3588 | VMA, SIZE, LMA, MAPPED | |
3589 | }; | |
c906108c SS |
3590 | |
3591 | /* Throw away the cached copy of _ovly_table */ | |
3592 | static void | |
fba45db2 | 3593 | simple_free_overlay_table (void) |
c906108c SS |
3594 | { |
3595 | if (cache_ovly_table) | |
b8c9b27d | 3596 | xfree (cache_ovly_table); |
c5aa993b | 3597 | cache_novlys = 0; |
c906108c SS |
3598 | cache_ovly_table = NULL; |
3599 | cache_ovly_table_base = 0; | |
3600 | } | |
3601 | ||
3602 | #if 0 | |
3603 | /* Throw away the cached copy of _ovly_region_table */ | |
3604 | static void | |
fba45db2 | 3605 | simple_free_overlay_region_table (void) |
c906108c SS |
3606 | { |
3607 | if (cache_ovly_region_table) | |
b8c9b27d | 3608 | xfree (cache_ovly_region_table); |
c5aa993b | 3609 | cache_novly_regions = 0; |
c906108c SS |
3610 | cache_ovly_region_table = NULL; |
3611 | cache_ovly_region_table_base = 0; | |
3612 | } | |
3613 | #endif | |
3614 | ||
9216df95 | 3615 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c906108c SS |
3616 | Convert to host order. int LEN is number of ints */ |
3617 | static void | |
9216df95 | 3618 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3619 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3620 | { |
34c0bd93 | 3621 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3622 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3623 | int i; |
c906108c | 3624 | |
9216df95 | 3625 | read_memory (memaddr, buf, len * size); |
c906108c | 3626 | for (i = 0; i < len; i++) |
e17a4113 | 3627 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3628 | } |
3629 | ||
3630 | /* Find and grab a copy of the target _ovly_table | |
3631 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3632 | static int |
fba45db2 | 3633 | simple_read_overlay_table (void) |
c906108c | 3634 | { |
0d43edd1 | 3635 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3636 | struct gdbarch *gdbarch; |
3637 | int word_size; | |
e17a4113 | 3638 | enum bfd_endian byte_order; |
c906108c SS |
3639 | |
3640 | simple_free_overlay_table (); | |
9b27852e | 3641 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3642 | if (! novlys_msym) |
c906108c | 3643 | { |
8a3fe4f8 | 3644 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3645 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3646 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3647 | return 0; |
c906108c | 3648 | } |
0d43edd1 | 3649 | |
9b27852e | 3650 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3651 | if (! ovly_table_msym) |
3652 | { | |
8a3fe4f8 | 3653 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3654 | "`_ovly_table' array\n" |
8a3fe4f8 | 3655 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3656 | return 0; |
3657 | } | |
3658 | ||
9216df95 UW |
3659 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3660 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3661 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3662 | |
e17a4113 UW |
3663 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3664 | 4, byte_order); | |
0d43edd1 JB |
3665 | cache_ovly_table |
3666 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3667 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3668 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3669 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3670 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3671 | |
c5aa993b | 3672 | return 1; /* SUCCESS */ |
c906108c SS |
3673 | } |
3674 | ||
3675 | #if 0 | |
3676 | /* Find and grab a copy of the target _ovly_region_table | |
3677 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3678 | static int |
fba45db2 | 3679 | simple_read_overlay_region_table (void) |
c906108c SS |
3680 | { |
3681 | struct minimal_symbol *msym; | |
e17a4113 UW |
3682 | struct gdbarch *gdbarch; |
3683 | int word_size; | |
3684 | enum bfd_endian byte_order; | |
c906108c SS |
3685 | |
3686 | simple_free_overlay_region_table (); | |
9b27852e | 3687 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
e17a4113 | 3688 | if (msym == NULL) |
c5aa993b | 3689 | return 0; /* failure */ |
e17a4113 UW |
3690 | |
3691 | gdbarch = get_objfile_arch (msymbol_objfile (msym)); | |
3692 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
3693 | byte_order = gdbarch_byte_order (gdbarch); | |
3694 | ||
3695 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), | |
3696 | 4, byte_order); | |
3697 | ||
c906108c SS |
3698 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3699 | if (cache_ovly_region_table != NULL) | |
3700 | { | |
9b27852e | 3701 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3702 | if (msym != NULL) |
3703 | { | |
3704 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3705 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3706 | (unsigned int *) cache_ovly_region_table, |
e17a4113 UW |
3707 | cache_novly_regions * 3, |
3708 | word_size, byte_order); | |
c906108c | 3709 | } |
c5aa993b JM |
3710 | else |
3711 | return 0; /* failure */ | |
c906108c | 3712 | } |
c5aa993b JM |
3713 | else |
3714 | return 0; /* failure */ | |
3715 | return 1; /* SUCCESS */ | |
c906108c SS |
3716 | } |
3717 | #endif | |
3718 | ||
5417f6dc | 3719 | /* Function: simple_overlay_update_1 |
c906108c SS |
3720 | A helper function for simple_overlay_update. Assuming a cached copy |
3721 | of _ovly_table exists, look through it to find an entry whose vma, | |
3722 | lma and size match those of OSECT. Re-read the entry and make sure | |
3723 | it still matches OSECT (else the table may no longer be valid). | |
3724 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3725 | success, 0 for failure. */ | |
3726 | ||
3727 | static int | |
fba45db2 | 3728 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3729 | { |
3730 | int i, size; | |
fbd35540 MS |
3731 | bfd *obfd = osect->objfile->obfd; |
3732 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3733 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3734 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3735 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3736 | |
2c500098 | 3737 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3738 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3739 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3740 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3741 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3742 | { |
9216df95 UW |
3743 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3744 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3745 | 4, word_size, byte_order); |
fbd35540 MS |
3746 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3747 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3748 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3749 | { |
3750 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3751 | return 1; | |
3752 | } | |
fbd35540 | 3753 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3754 | return 0; |
3755 | } | |
3756 | return 0; | |
3757 | } | |
3758 | ||
3759 | /* Function: simple_overlay_update | |
5417f6dc RM |
3760 | If OSECT is NULL, then update all sections' mapped state |
3761 | (after re-reading the entire target _ovly_table). | |
3762 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3763 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3764 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3765 | re-read the entire cache, and go ahead and update all sections. */ |
3766 | ||
1c772458 | 3767 | void |
fba45db2 | 3768 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3769 | { |
c5aa993b | 3770 | struct objfile *objfile; |
c906108c SS |
3771 | |
3772 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3773 | if (osect) | |
3774 | /* Have we got a cached copy of the target's overlay table? */ | |
3775 | if (cache_ovly_table != NULL) | |
3776 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3777 | if (cache_ovly_table_base == |
9b27852e | 3778 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3779 | /* Then go ahead and try to look up this single section in the cache */ |
3780 | if (simple_overlay_update_1 (osect)) | |
3781 | /* Found it! We're done. */ | |
3782 | return; | |
3783 | ||
3784 | /* Cached table no good: need to read the entire table anew. | |
3785 | Or else we want all the sections, in which case it's actually | |
3786 | more efficient to read the whole table in one block anyway. */ | |
3787 | ||
0d43edd1 JB |
3788 | if (! simple_read_overlay_table ()) |
3789 | return; | |
3790 | ||
c906108c SS |
3791 | /* Now may as well update all sections, even if only one was requested. */ |
3792 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3793 | if (section_is_overlay (osect)) |
c5aa993b JM |
3794 | { |
3795 | int i, size; | |
fbd35540 MS |
3796 | bfd *obfd = osect->objfile->obfd; |
3797 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3798 | |
2c500098 | 3799 | size = bfd_get_section_size (bsect); |
c5aa993b | 3800 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3801 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3802 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3803 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3804 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3805 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3806 | break; /* finished with inner for loop: break out */ | |
3807 | } | |
3808 | } | |
c906108c SS |
3809 | } |
3810 | ||
086df311 DJ |
3811 | /* Set the output sections and output offsets for section SECTP in |
3812 | ABFD. The relocation code in BFD will read these offsets, so we | |
3813 | need to be sure they're initialized. We map each section to itself, | |
3814 | with no offset; this means that SECTP->vma will be honored. */ | |
3815 | ||
3816 | static void | |
3817 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3818 | { | |
3819 | sectp->output_section = sectp; | |
3820 | sectp->output_offset = 0; | |
3821 | } | |
3822 | ||
3823 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3824 | contents are stored in BUF if it is non-NULL, or returned in a | |
3825 | malloc'd buffer otherwise. | |
3826 | ||
3827 | For some platforms and debug info formats, shared libraries contain | |
3828 | relocations against the debug sections (particularly for DWARF-2; | |
3829 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3830 | the version of the linker in use). Also, ELF object files naturally | |
3831 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3832 | the relocations in order to get the locations of symbols correct. |
3833 | Another example that may require relocation processing, is the | |
3834 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3835 | debug section. */ | |
086df311 DJ |
3836 | |
3837 | bfd_byte * | |
3838 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3839 | { | |
065a2c74 | 3840 | /* We're only interested in sections with relocation |
086df311 DJ |
3841 | information. */ |
3842 | if ((sectp->flags & SEC_RELOC) == 0) | |
3843 | return NULL; | |
086df311 DJ |
3844 | |
3845 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3846 | all sections begin at 0. */ | |
3847 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3848 | ||
97606a13 | 3849 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3850 | } |
c906108c | 3851 | |
31d99776 DJ |
3852 | struct symfile_segment_data * |
3853 | get_symfile_segment_data (bfd *abfd) | |
3854 | { | |
3855 | struct sym_fns *sf = find_sym_fns (abfd); | |
3856 | ||
3857 | if (sf == NULL) | |
3858 | return NULL; | |
3859 | ||
3860 | return sf->sym_segments (abfd); | |
3861 | } | |
3862 | ||
3863 | void | |
3864 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3865 | { | |
3866 | xfree (data->segment_bases); | |
3867 | xfree (data->segment_sizes); | |
3868 | xfree (data->segment_info); | |
3869 | xfree (data); | |
3870 | } | |
3871 | ||
28c32713 JB |
3872 | |
3873 | /* Given: | |
3874 | - DATA, containing segment addresses from the object file ABFD, and | |
3875 | the mapping from ABFD's sections onto the segments that own them, | |
3876 | and | |
3877 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3878 | segment addresses reported by the target, | |
3879 | store the appropriate offsets for each section in OFFSETS. | |
3880 | ||
3881 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3882 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3883 | ||
8d385431 DJ |
3884 | If there are more entries, then ignore the extra. The target may |
3885 | not be able to distinguish between an empty data segment and a | |
3886 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3887 | int |
3888 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3889 | struct section_offsets *offsets, | |
3890 | int num_segment_bases, | |
3891 | const CORE_ADDR *segment_bases) | |
3892 | { | |
3893 | int i; | |
3894 | asection *sect; | |
3895 | ||
28c32713 JB |
3896 | /* It doesn't make sense to call this function unless you have some |
3897 | segment base addresses. */ | |
3898 | gdb_assert (segment_bases > 0); | |
3899 | ||
31d99776 DJ |
3900 | /* If we do not have segment mappings for the object file, we |
3901 | can not relocate it by segments. */ | |
3902 | gdb_assert (data != NULL); | |
3903 | gdb_assert (data->num_segments > 0); | |
3904 | ||
31d99776 DJ |
3905 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3906 | { | |
31d99776 DJ |
3907 | int which = data->segment_info[i]; |
3908 | ||
28c32713 JB |
3909 | gdb_assert (0 <= which && which <= data->num_segments); |
3910 | ||
3911 | /* Don't bother computing offsets for sections that aren't | |
3912 | loaded as part of any segment. */ | |
3913 | if (! which) | |
3914 | continue; | |
3915 | ||
3916 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3917 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3918 | if (which > num_segment_bases) |
28c32713 | 3919 | which = num_segment_bases; |
31d99776 | 3920 | |
28c32713 JB |
3921 | offsets->offsets[i] = (segment_bases[which - 1] |
3922 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3923 | } |
3924 | ||
3925 | return 1; | |
3926 | } | |
3927 | ||
3928 | static void | |
3929 | symfile_find_segment_sections (struct objfile *objfile) | |
3930 | { | |
3931 | bfd *abfd = objfile->obfd; | |
3932 | int i; | |
3933 | asection *sect; | |
3934 | struct symfile_segment_data *data; | |
3935 | ||
3936 | data = get_symfile_segment_data (objfile->obfd); | |
3937 | if (data == NULL) | |
3938 | return; | |
3939 | ||
3940 | if (data->num_segments != 1 && data->num_segments != 2) | |
3941 | { | |
3942 | free_symfile_segment_data (data); | |
3943 | return; | |
3944 | } | |
3945 | ||
3946 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3947 | { | |
3948 | CORE_ADDR vma; | |
3949 | int which = data->segment_info[i]; | |
3950 | ||
3951 | if (which == 1) | |
3952 | { | |
3953 | if (objfile->sect_index_text == -1) | |
3954 | objfile->sect_index_text = sect->index; | |
3955 | ||
3956 | if (objfile->sect_index_rodata == -1) | |
3957 | objfile->sect_index_rodata = sect->index; | |
3958 | } | |
3959 | else if (which == 2) | |
3960 | { | |
3961 | if (objfile->sect_index_data == -1) | |
3962 | objfile->sect_index_data = sect->index; | |
3963 | ||
3964 | if (objfile->sect_index_bss == -1) | |
3965 | objfile->sect_index_bss = sect->index; | |
3966 | } | |
3967 | } | |
3968 | ||
3969 | free_symfile_segment_data (data); | |
3970 | } | |
3971 | ||
c906108c | 3972 | void |
fba45db2 | 3973 | _initialize_symfile (void) |
c906108c SS |
3974 | { |
3975 | struct cmd_list_element *c; | |
c5aa993b | 3976 | |
1a966eab AC |
3977 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3978 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3979 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3980 | to execute."), &cmdlist); |
5ba2abeb | 3981 | set_cmd_completer (c, filename_completer); |
c906108c | 3982 | |
1a966eab | 3983 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3984 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 3985 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 3986 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3987 | The optional arguments are section-name section-address pairs and\n\ |
3988 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3989 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3990 | &cmdlist); |
5ba2abeb | 3991 | set_cmd_completer (c, filename_completer); |
c906108c | 3992 | |
1a966eab AC |
3993 | c = add_cmd ("load", class_files, load_command, _("\ |
3994 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3995 | for access from GDB.\n\ |
3996 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3997 | set_cmd_completer (c, filename_completer); |
c906108c | 3998 | |
5bf193a2 AC |
3999 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
4000 | &symbol_reloading, _("\ | |
4001 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
4002 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
4003 | NULL, | |
920d2a44 | 4004 | show_symbol_reloading, |
5bf193a2 | 4005 | &setlist, &showlist); |
c906108c | 4006 | |
c5aa993b | 4007 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 4008 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
4009 | "overlay ", 0, &cmdlist); |
4010 | ||
4011 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
4012 | add_com_alias ("ov", "overlay", class_alias, 1); | |
4013 | ||
c5aa993b | 4014 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 4015 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 4016 | |
c5aa993b | 4017 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4018 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4019 | |
c5aa993b | 4020 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4021 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4022 | |
c5aa993b | 4023 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4024 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4025 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4026 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4027 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4028 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4029 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4030 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4031 | |
4032 | /* Filename extension to source language lookup table: */ | |
4033 | init_filename_language_table (); | |
26c41df3 AC |
4034 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4035 | &ext_args, _("\ | |
4036 | Set mapping between filename extension and source language."), _("\ | |
4037 | Show mapping between filename extension and source language."), _("\ | |
4038 | Usage: set extension-language .foo bar"), | |
4039 | set_ext_lang_command, | |
920d2a44 | 4040 | show_ext_args, |
26c41df3 | 4041 | &setlist, &showlist); |
c906108c | 4042 | |
c5aa993b | 4043 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4044 | _("All filename extensions associated with a source language.")); |
917317f4 | 4045 | |
525226b5 AC |
4046 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4047 | &debug_file_directory, _("\ | |
24ddea62 JK |
4048 | Set the directories where separate debug symbols are searched for."), _("\ |
4049 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4050 | Separate debug symbols are first searched for in the same\n\ |
4051 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4052 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4053 | each global debug-file-directory component prepended."), |
525226b5 | 4054 | NULL, |
920d2a44 | 4055 | show_debug_file_directory, |
525226b5 | 4056 | &setlist, &showlist); |
c906108c | 4057 | } |