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, |
9b254dd1 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
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" | |
086df311 | 25 | #include "bfdlink.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "gdbtypes.h" | |
28 | #include "gdbcore.h" | |
29 | #include "frame.h" | |
30 | #include "target.h" | |
31 | #include "value.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
0378c332 | 34 | #include "source.h" |
c906108c SS |
35 | #include "gdbcmd.h" |
36 | #include "breakpoint.h" | |
37 | #include "language.h" | |
38 | #include "complaints.h" | |
39 | #include "demangle.h" | |
c5aa993b | 40 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
7e8580c1 | 48 | #include "gdb_assert.h" |
fe898f56 | 49 | #include "block.h" |
ea53e89f | 50 | #include "observer.h" |
c1bd25fd | 51 | #include "exec.h" |
9bdcbae7 | 52 | #include "parser-defs.h" |
8756216b | 53 | #include "varobj.h" |
77069918 | 54 | #include "elf-bfd.h" |
e85a822c | 55 | #include "solib.h" |
f1838a98 | 56 | #include "remote.h" |
c906108c | 57 | |
c906108c SS |
58 | #include <sys/types.h> |
59 | #include <fcntl.h> | |
60 | #include "gdb_string.h" | |
61 | #include "gdb_stat.h" | |
62 | #include <ctype.h> | |
63 | #include <time.h> | |
2b71414d | 64 | #include <sys/time.h> |
c906108c | 65 | |
c906108c | 66 | |
9a4105ab AC |
67 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
68 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
69 | unsigned long section_sent, |
70 | unsigned long section_size, | |
71 | unsigned long total_sent, | |
c2d11a7d | 72 | unsigned long total_size); |
769d7dc4 AC |
73 | void (*deprecated_pre_add_symbol_hook) (const char *); |
74 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 75 | |
74b7792f AC |
76 | static void clear_symtab_users_cleanup (void *ignore); |
77 | ||
c906108c | 78 | /* Global variables owned by this file */ |
c5aa993b | 79 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 80 | |
c906108c SS |
81 | /* External variables and functions referenced. */ |
82 | ||
a14ed312 | 83 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
84 | |
85 | /* Functions this file defines */ | |
86 | ||
87 | #if 0 | |
a14ed312 KB |
88 | static int simple_read_overlay_region_table (void); |
89 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
90 | #endif |
91 | ||
a14ed312 | 92 | static void load_command (char *, int); |
c906108c | 93 | |
d7db6da9 FN |
94 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
95 | ||
a14ed312 | 96 | static void add_symbol_file_command (char *, int); |
c906108c | 97 | |
a14ed312 | 98 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 99 | |
5b5d99cf JB |
100 | static void reread_separate_symbols (struct objfile *objfile); |
101 | ||
a14ed312 | 102 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 103 | |
a14ed312 | 104 | bfd *symfile_bfd_open (char *); |
c906108c | 105 | |
0e931cf0 JB |
106 | int get_section_index (struct objfile *, char *); |
107 | ||
31d99776 | 108 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 109 | |
a14ed312 | 110 | static void decrement_reading_symtab (void *); |
c906108c | 111 | |
a14ed312 | 112 | static void overlay_invalidate_all (void); |
c906108c | 113 | |
a14ed312 | 114 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 115 | |
a14ed312 | 116 | void list_overlays_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | void map_overlay_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | void unmap_overlay_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_auto_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_manual_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void overlay_off_command (char *, int); |
c906108c | 127 | |
a14ed312 | 128 | static void overlay_load_command (char *, int); |
c906108c | 129 | |
a14ed312 | 130 | static void overlay_command (char *, int); |
c906108c | 131 | |
a14ed312 | 132 | static void simple_free_overlay_table (void); |
c906108c | 133 | |
a14ed312 | 134 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 135 | |
a14ed312 | 136 | static int simple_read_overlay_table (void); |
c906108c | 137 | |
a14ed312 | 138 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 139 | |
a14ed312 | 140 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 141 | |
a14ed312 | 142 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 143 | |
5b5d99cf JB |
144 | static char *find_separate_debug_file (struct objfile *objfile); |
145 | ||
a14ed312 | 146 | static void init_filename_language_table (void); |
392a587b | 147 | |
31d99776 DJ |
148 | static void symfile_find_segment_sections (struct objfile *objfile); |
149 | ||
a14ed312 | 150 | void _initialize_symfile (void); |
c906108c SS |
151 | |
152 | /* List of all available sym_fns. On gdb startup, each object file reader | |
153 | calls add_symtab_fns() to register information on each format it is | |
154 | prepared to read. */ | |
155 | ||
156 | static struct sym_fns *symtab_fns = NULL; | |
157 | ||
158 | /* Flag for whether user will be reloading symbols multiple times. | |
159 | Defaults to ON for VxWorks, otherwise OFF. */ | |
160 | ||
161 | #ifdef SYMBOL_RELOADING_DEFAULT | |
162 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
163 | #else | |
164 | int symbol_reloading = 0; | |
165 | #endif | |
920d2a44 AC |
166 | static void |
167 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
168 | struct cmd_list_element *c, const char *value) | |
169 | { | |
170 | fprintf_filtered (file, _("\ | |
171 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
172 | value); | |
173 | } | |
174 | ||
bf250677 DE |
175 | /* If non-zero, gdb will notify the user when it is loading symbols |
176 | from a file. This is almost always what users will want to have happen; | |
177 | but for programs with lots of dynamically linked libraries, the output | |
178 | can be more noise than signal. */ | |
179 | ||
180 | int print_symbol_loading = 1; | |
c906108c | 181 | |
b7209cb4 FF |
182 | /* If non-zero, shared library symbols will be added automatically |
183 | when the inferior is created, new libraries are loaded, or when | |
184 | attaching to the inferior. This is almost always what users will | |
185 | want to have happen; but for very large programs, the startup time | |
186 | will be excessive, and so if this is a problem, the user can clear | |
187 | this flag and then add the shared library symbols as needed. Note | |
188 | that there is a potential for confusion, since if the shared | |
c906108c | 189 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 190 | report all the functions that are actually present. */ |
c906108c SS |
191 | |
192 | int auto_solib_add = 1; | |
b7209cb4 FF |
193 | |
194 | /* For systems that support it, a threshold size in megabytes. If | |
195 | automatically adding a new library's symbol table to those already | |
196 | known to the debugger would cause the total shared library symbol | |
197 | size to exceed this threshhold, then the shlib's symbols are not | |
198 | added. The threshold is ignored if the user explicitly asks for a | |
199 | shlib to be added, such as when using the "sharedlibrary" | |
200 | command. */ | |
201 | ||
202 | int auto_solib_limit; | |
c906108c | 203 | \f |
c5aa993b | 204 | |
0fe19209 DC |
205 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
206 | for the comparison. */ | |
c906108c SS |
207 | |
208 | static int | |
0cd64fe2 | 209 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 210 | { |
0fe19209 DC |
211 | struct partial_symbol *const *s1 = s1p; |
212 | struct partial_symbol *const *s2 = s2p; | |
213 | ||
4725b721 PH |
214 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
215 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
216 | } |
217 | ||
218 | void | |
fba45db2 | 219 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
220 | { |
221 | /* Sort the global list; don't sort the static list */ | |
222 | ||
c5aa993b JM |
223 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
224 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
225 | compare_psymbols); |
226 | } | |
227 | ||
c906108c SS |
228 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
229 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
230 | Note that the string at PTR does not have to be null terminated, I.E. it | |
231 | may be part of a larger string and we are only saving a substring. */ | |
232 | ||
233 | char * | |
63ca651f | 234 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 235 | { |
52f0bd74 | 236 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
237 | /* Open-coded memcpy--saves function call time. These strings are usually |
238 | short. FIXME: Is this really still true with a compiler that can | |
239 | inline memcpy? */ | |
240 | { | |
aa1ee363 AC |
241 | const char *p1 = ptr; |
242 | char *p2 = p; | |
63ca651f | 243 | const char *end = ptr + size; |
c906108c SS |
244 | while (p1 != end) |
245 | *p2++ = *p1++; | |
246 | } | |
247 | p[size] = 0; | |
248 | return p; | |
249 | } | |
250 | ||
251 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
252 | in the obstack pointed to by OBSTACKP. */ | |
253 | ||
254 | char * | |
fba45db2 KB |
255 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
256 | const char *s3) | |
c906108c | 257 | { |
52f0bd74 AC |
258 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
259 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
260 | strcpy (val, s1); |
261 | strcat (val, s2); | |
262 | strcat (val, s3); | |
263 | return val; | |
264 | } | |
265 | ||
266 | /* True if we are nested inside psymtab_to_symtab. */ | |
267 | ||
268 | int currently_reading_symtab = 0; | |
269 | ||
270 | static void | |
fba45db2 | 271 | decrement_reading_symtab (void *dummy) |
c906108c SS |
272 | { |
273 | currently_reading_symtab--; | |
274 | } | |
275 | ||
276 | /* Get the symbol table that corresponds to a partial_symtab. | |
277 | This is fast after the first time you do it. In fact, there | |
278 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
279 | case inline. */ | |
280 | ||
281 | struct symtab * | |
aa1ee363 | 282 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
283 | { |
284 | /* If it's been looked up before, return it. */ | |
285 | if (pst->symtab) | |
286 | return pst->symtab; | |
287 | ||
288 | /* If it has not yet been read in, read it. */ | |
289 | if (!pst->readin) | |
c5aa993b | 290 | { |
c906108c SS |
291 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
292 | currently_reading_symtab++; | |
293 | (*pst->read_symtab) (pst); | |
294 | do_cleanups (back_to); | |
295 | } | |
296 | ||
297 | return pst->symtab; | |
298 | } | |
299 | ||
5417f6dc RM |
300 | /* Remember the lowest-addressed loadable section we've seen. |
301 | This function is called via bfd_map_over_sections. | |
c906108c SS |
302 | |
303 | In case of equal vmas, the section with the largest size becomes the | |
304 | lowest-addressed loadable section. | |
305 | ||
306 | If the vmas and sizes are equal, the last section is considered the | |
307 | lowest-addressed loadable section. */ | |
308 | ||
309 | void | |
4efb68b1 | 310 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 311 | { |
c5aa993b | 312 | asection **lowest = (asection **) obj; |
c906108c SS |
313 | |
314 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
315 | return; | |
316 | if (!*lowest) | |
317 | *lowest = sect; /* First loadable section */ | |
318 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
319 | *lowest = sect; /* A lower loadable section */ | |
320 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
321 | && (bfd_section_size (abfd, (*lowest)) | |
322 | <= bfd_section_size (abfd, sect))) | |
323 | *lowest = sect; | |
324 | } | |
325 | ||
a39a16c4 MM |
326 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
327 | ||
328 | struct section_addr_info * | |
329 | alloc_section_addr_info (size_t num_sections) | |
330 | { | |
331 | struct section_addr_info *sap; | |
332 | size_t size; | |
333 | ||
334 | size = (sizeof (struct section_addr_info) | |
335 | + sizeof (struct other_sections) * (num_sections - 1)); | |
336 | sap = (struct section_addr_info *) xmalloc (size); | |
337 | memset (sap, 0, size); | |
338 | sap->num_sections = num_sections; | |
339 | ||
340 | return sap; | |
341 | } | |
62557bbc | 342 | |
7b90c3f9 JB |
343 | |
344 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
345 | any, are also freshly allocated copies of those in ADDRS. */ | |
346 | struct section_addr_info * | |
347 | copy_section_addr_info (struct section_addr_info *addrs) | |
348 | { | |
349 | struct section_addr_info *copy | |
350 | = alloc_section_addr_info (addrs->num_sections); | |
351 | int i; | |
352 | ||
353 | copy->num_sections = addrs->num_sections; | |
354 | for (i = 0; i < addrs->num_sections; i++) | |
355 | { | |
356 | copy->other[i].addr = addrs->other[i].addr; | |
357 | if (addrs->other[i].name) | |
358 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
359 | else | |
360 | copy->other[i].name = NULL; | |
361 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
362 | } | |
363 | ||
364 | return copy; | |
365 | } | |
366 | ||
367 | ||
368 | ||
62557bbc KB |
369 | /* Build (allocate and populate) a section_addr_info struct from |
370 | an existing section table. */ | |
371 | ||
372 | extern struct section_addr_info * | |
373 | build_section_addr_info_from_section_table (const struct section_table *start, | |
374 | const struct section_table *end) | |
375 | { | |
376 | struct section_addr_info *sap; | |
377 | const struct section_table *stp; | |
378 | int oidx; | |
379 | ||
a39a16c4 | 380 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
381 | |
382 | for (stp = start, oidx = 0; stp != end; stp++) | |
383 | { | |
5417f6dc | 384 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 385 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 386 | && oidx < end - start) |
62557bbc KB |
387 | { |
388 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 389 | sap->other[oidx].name |
fbd35540 | 390 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
391 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
392 | oidx++; | |
393 | } | |
394 | } | |
395 | ||
396 | return sap; | |
397 | } | |
398 | ||
399 | ||
400 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
401 | ||
402 | extern void | |
403 | free_section_addr_info (struct section_addr_info *sap) | |
404 | { | |
405 | int idx; | |
406 | ||
a39a16c4 | 407 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 408 | if (sap->other[idx].name) |
b8c9b27d KB |
409 | xfree (sap->other[idx].name); |
410 | xfree (sap); | |
62557bbc KB |
411 | } |
412 | ||
413 | ||
e8289572 JB |
414 | /* Initialize OBJFILE's sect_index_* members. */ |
415 | static void | |
416 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 417 | { |
e8289572 | 418 | asection *sect; |
c906108c | 419 | int i; |
5417f6dc | 420 | |
b8fbeb18 | 421 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 422 | if (sect) |
b8fbeb18 EZ |
423 | objfile->sect_index_text = sect->index; |
424 | ||
425 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 426 | if (sect) |
b8fbeb18 EZ |
427 | objfile->sect_index_data = sect->index; |
428 | ||
429 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 430 | if (sect) |
b8fbeb18 EZ |
431 | objfile->sect_index_bss = sect->index; |
432 | ||
433 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 434 | if (sect) |
b8fbeb18 EZ |
435 | objfile->sect_index_rodata = sect->index; |
436 | ||
bbcd32ad FF |
437 | /* This is where things get really weird... We MUST have valid |
438 | indices for the various sect_index_* members or gdb will abort. | |
439 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
440 | accomodate that. First, check for a file with the standard |
441 | one or two segments. */ | |
442 | ||
443 | symfile_find_segment_sections (objfile); | |
444 | ||
445 | /* Except when explicitly adding symbol files at some address, | |
446 | section_offsets contains nothing but zeros, so it doesn't matter | |
447 | which slot in section_offsets the individual sect_index_* members | |
448 | index into. So if they are all zero, it is safe to just point | |
449 | all the currently uninitialized indices to the first slot. But | |
450 | beware: if this is the main executable, it may be relocated | |
451 | later, e.g. by the remote qOffsets packet, and then this will | |
452 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
453 | |
454 | for (i = 0; i < objfile->num_sections; i++) | |
455 | { | |
456 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
457 | { | |
458 | break; | |
459 | } | |
460 | } | |
461 | if (i == objfile->num_sections) | |
462 | { | |
463 | if (objfile->sect_index_text == -1) | |
464 | objfile->sect_index_text = 0; | |
465 | if (objfile->sect_index_data == -1) | |
466 | objfile->sect_index_data = 0; | |
467 | if (objfile->sect_index_bss == -1) | |
468 | objfile->sect_index_bss = 0; | |
469 | if (objfile->sect_index_rodata == -1) | |
470 | objfile->sect_index_rodata = 0; | |
471 | } | |
b8fbeb18 | 472 | } |
c906108c | 473 | |
c1bd25fd DJ |
474 | /* The arguments to place_section. */ |
475 | ||
476 | struct place_section_arg | |
477 | { | |
478 | struct section_offsets *offsets; | |
479 | CORE_ADDR lowest; | |
480 | }; | |
481 | ||
482 | /* Find a unique offset to use for loadable section SECT if | |
483 | the user did not provide an offset. */ | |
484 | ||
485 | void | |
486 | place_section (bfd *abfd, asection *sect, void *obj) | |
487 | { | |
488 | struct place_section_arg *arg = obj; | |
489 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
490 | int done; | |
3bd72c6f | 491 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 492 | |
2711e456 DJ |
493 | /* We are only interested in allocated sections. */ |
494 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
495 | return; |
496 | ||
497 | /* If the user specified an offset, honor it. */ | |
498 | if (offsets[sect->index] != 0) | |
499 | return; | |
500 | ||
501 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
502 | start_addr = (arg->lowest + align - 1) & -align; |
503 | ||
c1bd25fd DJ |
504 | do { |
505 | asection *cur_sec; | |
c1bd25fd | 506 | |
c1bd25fd DJ |
507 | done = 1; |
508 | ||
509 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
510 | { | |
511 | int indx = cur_sec->index; | |
512 | CORE_ADDR cur_offset; | |
513 | ||
514 | /* We don't need to compare against ourself. */ | |
515 | if (cur_sec == sect) | |
516 | continue; | |
517 | ||
2711e456 DJ |
518 | /* We can only conflict with allocated sections. */ |
519 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
520 | continue; |
521 | ||
522 | /* If the section offset is 0, either the section has not been placed | |
523 | yet, or it was the lowest section placed (in which case LOWEST | |
524 | will be past its end). */ | |
525 | if (offsets[indx] == 0) | |
526 | continue; | |
527 | ||
528 | /* If this section would overlap us, then we must move up. */ | |
529 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
530 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
531 | { | |
532 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
533 | start_addr = (start_addr + align - 1) & -align; | |
534 | done = 0; | |
3bd72c6f | 535 | break; |
c1bd25fd DJ |
536 | } |
537 | ||
538 | /* Otherwise, we appear to be OK. So far. */ | |
539 | } | |
540 | } | |
541 | while (!done); | |
542 | ||
543 | offsets[sect->index] = start_addr; | |
544 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 545 | } |
e8289572 JB |
546 | |
547 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 548 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
549 | version of the sym_fns.sym_offsets function for symbol readers that |
550 | don't need to do anything special. It allocates a section_offsets table | |
551 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
552 | ||
553 | void | |
554 | default_symfile_offsets (struct objfile *objfile, | |
555 | struct section_addr_info *addrs) | |
556 | { | |
557 | int i; | |
558 | ||
a39a16c4 | 559 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 560 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 561 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 562 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 563 | memset (objfile->section_offsets, 0, |
a39a16c4 | 564 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
565 | |
566 | /* Now calculate offsets for section that were specified by the | |
567 | caller. */ | |
a39a16c4 | 568 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
569 | { |
570 | struct other_sections *osp ; | |
571 | ||
572 | osp = &addrs->other[i] ; | |
573 | if (osp->addr == 0) | |
574 | continue; | |
575 | ||
576 | /* Record all sections in offsets */ | |
577 | /* The section_offsets in the objfile are here filled in using | |
578 | the BFD index. */ | |
579 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
580 | } | |
581 | ||
c1bd25fd DJ |
582 | /* For relocatable files, all loadable sections will start at zero. |
583 | The zero is meaningless, so try to pick arbitrary addresses such | |
584 | that no loadable sections overlap. This algorithm is quadratic, | |
585 | but the number of sections in a single object file is generally | |
586 | small. */ | |
587 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
588 | { | |
589 | struct place_section_arg arg; | |
2711e456 DJ |
590 | bfd *abfd = objfile->obfd; |
591 | asection *cur_sec; | |
592 | CORE_ADDR lowest = 0; | |
593 | ||
594 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
595 | /* We do not expect this to happen; just skip this step if the | |
596 | relocatable file has a section with an assigned VMA. */ | |
597 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
598 | break; | |
599 | ||
600 | if (cur_sec == NULL) | |
601 | { | |
602 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
603 | ||
604 | /* Pick non-overlapping offsets for sections the user did not | |
605 | place explicitly. */ | |
606 | arg.offsets = objfile->section_offsets; | |
607 | arg.lowest = 0; | |
608 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
609 | ||
610 | /* Correctly filling in the section offsets is not quite | |
611 | enough. Relocatable files have two properties that | |
612 | (most) shared objects do not: | |
613 | ||
614 | - Their debug information will contain relocations. Some | |
615 | shared libraries do also, but many do not, so this can not | |
616 | be assumed. | |
617 | ||
618 | - If there are multiple code sections they will be loaded | |
619 | at different relative addresses in memory than they are | |
620 | in the objfile, since all sections in the file will start | |
621 | at address zero. | |
622 | ||
623 | Because GDB has very limited ability to map from an | |
624 | address in debug info to the correct code section, | |
625 | it relies on adding SECT_OFF_TEXT to things which might be | |
626 | code. If we clear all the section offsets, and set the | |
627 | section VMAs instead, then symfile_relocate_debug_section | |
628 | will return meaningful debug information pointing at the | |
629 | correct sections. | |
630 | ||
631 | GDB has too many different data structures for section | |
632 | addresses - a bfd, objfile, and so_list all have section | |
633 | tables, as does exec_ops. Some of these could probably | |
634 | be eliminated. */ | |
635 | ||
636 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
637 | cur_sec = cur_sec->next) | |
638 | { | |
639 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
640 | continue; | |
641 | ||
642 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
643 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
644 | offsets[cur_sec->index]); | |
2711e456 DJ |
645 | offsets[cur_sec->index] = 0; |
646 | } | |
647 | } | |
c1bd25fd DJ |
648 | } |
649 | ||
e8289572 JB |
650 | /* Remember the bfd indexes for the .text, .data, .bss and |
651 | .rodata sections. */ | |
652 | init_objfile_sect_indices (objfile); | |
653 | } | |
654 | ||
655 | ||
31d99776 DJ |
656 | /* Divide the file into segments, which are individual relocatable units. |
657 | This is the default version of the sym_fns.sym_segments function for | |
658 | symbol readers that do not have an explicit representation of segments. | |
659 | It assumes that object files do not have segments, and fully linked | |
660 | files have a single segment. */ | |
661 | ||
662 | struct symfile_segment_data * | |
663 | default_symfile_segments (bfd *abfd) | |
664 | { | |
665 | int num_sections, i; | |
666 | asection *sect; | |
667 | struct symfile_segment_data *data; | |
668 | CORE_ADDR low, high; | |
669 | ||
670 | /* Relocatable files contain enough information to position each | |
671 | loadable section independently; they should not be relocated | |
672 | in segments. */ | |
673 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
674 | return NULL; | |
675 | ||
676 | /* Make sure there is at least one loadable section in the file. */ | |
677 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
678 | { | |
679 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
680 | continue; | |
681 | ||
682 | break; | |
683 | } | |
684 | if (sect == NULL) | |
685 | return NULL; | |
686 | ||
687 | low = bfd_get_section_vma (abfd, sect); | |
688 | high = low + bfd_get_section_size (sect); | |
689 | ||
690 | data = XZALLOC (struct symfile_segment_data); | |
691 | data->num_segments = 1; | |
692 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
693 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
694 | ||
695 | num_sections = bfd_count_sections (abfd); | |
696 | data->segment_info = XCALLOC (num_sections, int); | |
697 | ||
698 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
699 | { | |
700 | CORE_ADDR vma; | |
701 | ||
702 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
703 | continue; | |
704 | ||
705 | vma = bfd_get_section_vma (abfd, sect); | |
706 | if (vma < low) | |
707 | low = vma; | |
708 | if (vma + bfd_get_section_size (sect) > high) | |
709 | high = vma + bfd_get_section_size (sect); | |
710 | ||
711 | data->segment_info[i] = 1; | |
712 | } | |
713 | ||
714 | data->segment_bases[0] = low; | |
715 | data->segment_sizes[0] = high - low; | |
716 | ||
717 | return data; | |
718 | } | |
719 | ||
c906108c SS |
720 | /* Process a symbol file, as either the main file or as a dynamically |
721 | loaded file. | |
722 | ||
96baa820 JM |
723 | OBJFILE is where the symbols are to be read from. |
724 | ||
7e8580c1 JB |
725 | ADDRS is the list of section load addresses. If the user has given |
726 | an 'add-symbol-file' command, then this is the list of offsets and | |
727 | addresses he or she provided as arguments to the command; or, if | |
728 | we're handling a shared library, these are the actual addresses the | |
729 | sections are loaded at, according to the inferior's dynamic linker | |
730 | (as gleaned by GDB's shared library code). We convert each address | |
731 | into an offset from the section VMA's as it appears in the object | |
732 | file, and then call the file's sym_offsets function to convert this | |
733 | into a format-specific offset table --- a `struct section_offsets'. | |
734 | If ADDRS is non-zero, OFFSETS must be zero. | |
735 | ||
736 | OFFSETS is a table of section offsets already in the right | |
737 | format-specific representation. NUM_OFFSETS is the number of | |
738 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
739 | assume this is the proper table the call to sym_offsets described | |
740 | above would produce. Instead of calling sym_offsets, we just dump | |
741 | it right into objfile->section_offsets. (When we're re-reading | |
742 | symbols from an objfile, we don't have the original load address | |
743 | list any more; all we have is the section offset table.) If | |
744 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
745 | |
746 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
747 | it's an extra symbol file such as dynamically loaded code. | |
748 | ||
749 | VERBO is nonzero if the caller has printed a verbose message about | |
750 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
751 | |
752 | void | |
7e8580c1 JB |
753 | syms_from_objfile (struct objfile *objfile, |
754 | struct section_addr_info *addrs, | |
755 | struct section_offsets *offsets, | |
756 | int num_offsets, | |
757 | int mainline, | |
758 | int verbo) | |
c906108c | 759 | { |
a39a16c4 | 760 | struct section_addr_info *local_addr = NULL; |
c906108c | 761 | struct cleanup *old_chain; |
2acceee2 | 762 | |
7e8580c1 | 763 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 764 | |
c906108c | 765 | init_entry_point_info (objfile); |
31d99776 | 766 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 767 | |
75245b24 MS |
768 | if (objfile->sf == NULL) |
769 | return; /* No symbols. */ | |
770 | ||
c906108c SS |
771 | /* Make sure that partially constructed symbol tables will be cleaned up |
772 | if an error occurs during symbol reading. */ | |
74b7792f | 773 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 774 | |
a39a16c4 MM |
775 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
776 | list. We now establish the convention that an addr of zero means | |
777 | no load address was specified. */ | |
778 | if (! addrs && ! offsets) | |
779 | { | |
5417f6dc | 780 | local_addr |
a39a16c4 MM |
781 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
782 | make_cleanup (xfree, local_addr); | |
783 | addrs = local_addr; | |
784 | } | |
785 | ||
786 | /* Now either addrs or offsets is non-zero. */ | |
787 | ||
c5aa993b | 788 | if (mainline) |
c906108c SS |
789 | { |
790 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 791 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 792 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
793 | |
794 | /* Since no error yet, throw away the old symbol table. */ | |
795 | ||
796 | if (symfile_objfile != NULL) | |
797 | { | |
798 | free_objfile (symfile_objfile); | |
799 | symfile_objfile = NULL; | |
800 | } | |
801 | ||
802 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
803 | If the user wants to get rid of them, they should do "symbol-file" |
804 | without arguments first. Not sure this is the best behavior | |
805 | (PR 2207). */ | |
c906108c | 806 | |
c5aa993b | 807 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
808 | } |
809 | ||
810 | /* Convert addr into an offset rather than an absolute address. | |
811 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 812 | and assume that <addr> is where that got loaded. |
c906108c | 813 | |
53a5351d JM |
814 | We no longer warn if the lowest section is not a text segment (as |
815 | happens for the PA64 port. */ | |
1549f619 | 816 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 817 | { |
1549f619 EZ |
818 | asection *lower_sect; |
819 | asection *sect; | |
820 | CORE_ADDR lower_offset; | |
821 | int i; | |
822 | ||
5417f6dc | 823 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
824 | continguous sections. FIXME!! won't work without call to find |
825 | .text first, but this assumes text is lowest section. */ | |
826 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
827 | if (lower_sect == NULL) | |
c906108c | 828 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 829 | &lower_sect); |
2acceee2 | 830 | if (lower_sect == NULL) |
ff8e85c3 PA |
831 | { |
832 | warning (_("no loadable sections found in added symbol-file %s"), | |
833 | objfile->name); | |
834 | lower_offset = 0; | |
835 | } | |
2acceee2 | 836 | else |
ff8e85c3 | 837 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); |
5417f6dc | 838 | |
13de58df | 839 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
840 | FIXME! Sections must be in order of increasing loadable section |
841 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 842 | |
13de58df JB |
843 | Adjust offsets if the segments are not contiguous. |
844 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
845 | the offset of the highest loadable section lower than it |
846 | (the loadable section directly below it in memory). | |
847 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
848 | ||
1549f619 | 849 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
850 | { |
851 | if (addrs->other[i].addr != 0) | |
852 | { | |
853 | sect = bfd_get_section_by_name (objfile->obfd, | |
854 | addrs->other[i].name); | |
855 | if (sect) | |
856 | { | |
857 | addrs->other[i].addr | |
858 | -= bfd_section_vma (objfile->obfd, sect); | |
859 | lower_offset = addrs->other[i].addr; | |
860 | /* This is the index used by BFD. */ | |
861 | addrs->other[i].sectindex = sect->index ; | |
862 | } | |
863 | else | |
864 | { | |
8a3fe4f8 | 865 | warning (_("section %s not found in %s"), |
5417f6dc | 866 | addrs->other[i].name, |
7e8580c1 JB |
867 | objfile->name); |
868 | addrs->other[i].addr = 0; | |
869 | } | |
870 | } | |
871 | else | |
872 | addrs->other[i].addr = lower_offset; | |
873 | } | |
c906108c SS |
874 | } |
875 | ||
876 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
877 | appear for this new file, and record how verbose to be, then do the | |
878 | initial symbol reading for this file. */ | |
879 | ||
c5aa993b | 880 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 881 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 882 | |
7e8580c1 JB |
883 | if (addrs) |
884 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
885 | else | |
886 | { | |
887 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
888 | ||
889 | /* Just copy in the offset table directly as given to us. */ | |
890 | objfile->num_sections = num_offsets; | |
891 | objfile->section_offsets | |
892 | = ((struct section_offsets *) | |
8b92e4d5 | 893 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
894 | memcpy (objfile->section_offsets, offsets, size); |
895 | ||
896 | init_objfile_sect_indices (objfile); | |
897 | } | |
c906108c | 898 | |
96baa820 | 899 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 900 | |
c906108c SS |
901 | /* Don't allow char * to have a typename (else would get caddr_t). |
902 | Ditto void *. FIXME: Check whether this is now done by all the | |
903 | symbol readers themselves (many of them now do), and if so remove | |
904 | it from here. */ | |
905 | ||
906 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
907 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
908 | ||
909 | /* Mark the objfile has having had initial symbol read attempted. Note | |
910 | that this does not mean we found any symbols... */ | |
911 | ||
c5aa993b | 912 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
913 | |
914 | /* Discard cleanups as symbol reading was successful. */ | |
915 | ||
916 | discard_cleanups (old_chain); | |
c906108c SS |
917 | } |
918 | ||
919 | /* Perform required actions after either reading in the initial | |
920 | symbols for a new objfile, or mapping in the symbols from a reusable | |
921 | objfile. */ | |
c5aa993b | 922 | |
c906108c | 923 | void |
fba45db2 | 924 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
925 | { |
926 | ||
927 | /* If this is the main symbol file we have to clean up all users of the | |
928 | old main symbol file. Otherwise it is sufficient to fixup all the | |
929 | breakpoints that may have been redefined by this symbol file. */ | |
930 | if (mainline) | |
931 | { | |
932 | /* OK, make it the "real" symbol file. */ | |
933 | symfile_objfile = objfile; | |
934 | ||
935 | clear_symtab_users (); | |
936 | } | |
937 | else | |
938 | { | |
939 | breakpoint_re_set (); | |
940 | } | |
941 | ||
942 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 943 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
944 | } |
945 | ||
946 | /* Process a symbol file, as either the main file or as a dynamically | |
947 | loaded file. | |
948 | ||
5417f6dc RM |
949 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
950 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f JB |
951 | |
952 | FROM_TTY says how verbose to be. | |
953 | ||
954 | MAINLINE specifies whether this is the main symbol file, or whether | |
955 | it's an extra symbol file such as dynamically loaded code. | |
956 | ||
957 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
958 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
959 | non-zero. | |
c906108c | 960 | |
c906108c SS |
961 | Upon success, returns a pointer to the objfile that was added. |
962 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f | 963 | static struct objfile * |
5417f6dc | 964 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, |
7904e09f JB |
965 | struct section_addr_info *addrs, |
966 | struct section_offsets *offsets, | |
967 | int num_offsets, | |
968 | int mainline, int flags) | |
c906108c SS |
969 | { |
970 | struct objfile *objfile; | |
971 | struct partial_symtab *psymtab; | |
77069918 | 972 | char *debugfile = NULL; |
7b90c3f9 | 973 | struct section_addr_info *orig_addrs = NULL; |
a39a16c4 | 974 | struct cleanup *my_cleanups; |
5417f6dc | 975 | const char *name = bfd_get_filename (abfd); |
c906108c | 976 | |
5417f6dc | 977 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 978 | |
5417f6dc RM |
979 | /* Give user a chance to burp if we'd be |
980 | interactively wiping out any existing symbols. */ | |
c906108c SS |
981 | |
982 | if ((have_full_symbols () || have_partial_symbols ()) | |
983 | && mainline | |
984 | && from_tty | |
985 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
8a3fe4f8 | 986 | error (_("Not confirmed.")); |
c906108c | 987 | |
2df3850c | 988 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 989 | discard_cleanups (my_cleanups); |
c906108c | 990 | |
a39a16c4 | 991 | if (addrs) |
63cd24fe | 992 | { |
7b90c3f9 JB |
993 | orig_addrs = copy_section_addr_info (addrs); |
994 | make_cleanup_free_section_addr_info (orig_addrs); | |
63cd24fe | 995 | } |
a39a16c4 | 996 | |
78a4a9b9 AC |
997 | /* We either created a new mapped symbol table, mapped an existing |
998 | symbol table file which has not had initial symbol reading | |
999 | performed, or need to read an unmapped symbol table. */ | |
1000 | if (from_tty || info_verbose) | |
c906108c | 1001 | { |
769d7dc4 AC |
1002 | if (deprecated_pre_add_symbol_hook) |
1003 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1004 | else |
c906108c | 1005 | { |
bf250677 DE |
1006 | if (print_symbol_loading) |
1007 | { | |
1008 | printf_unfiltered (_("Reading symbols from %s..."), name); | |
1009 | wrap_here (""); | |
1010 | gdb_flush (gdb_stdout); | |
1011 | } | |
c906108c | 1012 | } |
c906108c | 1013 | } |
78a4a9b9 AC |
1014 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
1015 | mainline, from_tty); | |
c906108c SS |
1016 | |
1017 | /* We now have at least a partial symbol table. Check to see if the | |
1018 | user requested that all symbols be read on initial access via either | |
1019 | the gdb startup command line or on a per symbol file basis. Expand | |
1020 | all partial symbol tables for this objfile if so. */ | |
1021 | ||
2acceee2 | 1022 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 1023 | { |
bf250677 | 1024 | if ((from_tty || info_verbose) && print_symbol_loading) |
c906108c | 1025 | { |
a3f17187 | 1026 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1027 | wrap_here (""); |
1028 | gdb_flush (gdb_stdout); | |
1029 | } | |
1030 | ||
c5aa993b | 1031 | for (psymtab = objfile->psymtabs; |
c906108c | 1032 | psymtab != NULL; |
c5aa993b | 1033 | psymtab = psymtab->next) |
c906108c SS |
1034 | { |
1035 | psymtab_to_symtab (psymtab); | |
1036 | } | |
1037 | } | |
1038 | ||
77069918 JK |
1039 | /* If the file has its own symbol tables it has no separate debug info. |
1040 | `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to SYMTABS/PSYMTABS. | |
1041 | `.gnu_debuglink' may no longer be present with `.note.gnu.build-id'. */ | |
1042 | if (objfile->psymtabs == NULL) | |
1043 | debugfile = find_separate_debug_file (objfile); | |
5b5d99cf JB |
1044 | if (debugfile) |
1045 | { | |
5b5d99cf JB |
1046 | if (addrs != NULL) |
1047 | { | |
1048 | objfile->separate_debug_objfile | |
a39a16c4 | 1049 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
1050 | } |
1051 | else | |
1052 | { | |
1053 | objfile->separate_debug_objfile | |
1054 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
1055 | } | |
1056 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
1057 | = objfile; | |
5417f6dc | 1058 | |
5b5d99cf JB |
1059 | /* Put the separate debug object before the normal one, this is so that |
1060 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
1061 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 1062 | |
5b5d99cf JB |
1063 | xfree (debugfile); |
1064 | } | |
5417f6dc | 1065 | |
bf250677 DE |
1066 | if (!have_partial_symbols () && !have_full_symbols () |
1067 | && print_symbol_loading) | |
cb3c37b2 JB |
1068 | { |
1069 | wrap_here (""); | |
a3f17187 | 1070 | printf_filtered (_("(no debugging symbols found)")); |
8f5ba92b JG |
1071 | if (from_tty || info_verbose) |
1072 | printf_filtered ("..."); | |
1073 | else | |
1074 | printf_filtered ("\n"); | |
cb3c37b2 JB |
1075 | wrap_here (""); |
1076 | } | |
1077 | ||
c906108c SS |
1078 | if (from_tty || info_verbose) |
1079 | { | |
769d7dc4 AC |
1080 | if (deprecated_post_add_symbol_hook) |
1081 | deprecated_post_add_symbol_hook (); | |
c906108c | 1082 | else |
c5aa993b | 1083 | { |
bf250677 DE |
1084 | if (print_symbol_loading) |
1085 | printf_unfiltered (_("done.\n")); | |
c5aa993b | 1086 | } |
c906108c SS |
1087 | } |
1088 | ||
481d0f41 JB |
1089 | /* We print some messages regardless of whether 'from_tty || |
1090 | info_verbose' is true, so make sure they go out at the right | |
1091 | time. */ | |
1092 | gdb_flush (gdb_stdout); | |
1093 | ||
a39a16c4 MM |
1094 | do_cleanups (my_cleanups); |
1095 | ||
109f874e MS |
1096 | if (objfile->sf == NULL) |
1097 | return objfile; /* No symbols. */ | |
1098 | ||
c906108c SS |
1099 | new_symfile_objfile (objfile, mainline, from_tty); |
1100 | ||
06d3b283 | 1101 | observer_notify_new_objfile (objfile); |
c906108c | 1102 | |
ce7d4522 | 1103 | bfd_cache_close_all (); |
c906108c SS |
1104 | return (objfile); |
1105 | } | |
1106 | ||
7904e09f | 1107 | |
eb4556d7 JB |
1108 | /* Process the symbol file ABFD, as either the main file or as a |
1109 | dynamically loaded file. | |
1110 | ||
1111 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1112 | details. */ | |
1113 | struct objfile * | |
1114 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |
1115 | struct section_addr_info *addrs, | |
1116 | int mainline, int flags) | |
1117 | { | |
1118 | return symbol_file_add_with_addrs_or_offsets (abfd, | |
1119 | from_tty, addrs, 0, 0, | |
1120 | mainline, flags); | |
1121 | } | |
1122 | ||
1123 | ||
7904e09f JB |
1124 | /* Process a symbol file, as either the main file or as a dynamically |
1125 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1126 | for details. */ | |
1127 | struct objfile * | |
1128 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1129 | int mainline, int flags) | |
1130 | { | |
eb4556d7 JB |
1131 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, |
1132 | addrs, mainline, flags); | |
7904e09f JB |
1133 | } |
1134 | ||
1135 | ||
d7db6da9 FN |
1136 | /* Call symbol_file_add() with default values and update whatever is |
1137 | affected by the loading of a new main(). | |
1138 | Used when the file is supplied in the gdb command line | |
1139 | and by some targets with special loading requirements. | |
1140 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1141 | argument for the switches that can only be specified in the symbol_file | |
1142 | command itself. */ | |
5417f6dc | 1143 | |
1adeb98a FN |
1144 | void |
1145 | symbol_file_add_main (char *args, int from_tty) | |
1146 | { | |
d7db6da9 FN |
1147 | symbol_file_add_main_1 (args, from_tty, 0); |
1148 | } | |
1149 | ||
1150 | static void | |
1151 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1152 | { | |
1153 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1154 | ||
d7db6da9 FN |
1155 | /* Getting new symbols may change our opinion about |
1156 | what is frameless. */ | |
1157 | reinit_frame_cache (); | |
1158 | ||
1159 | set_initial_language (); | |
1adeb98a FN |
1160 | } |
1161 | ||
1162 | void | |
1163 | symbol_file_clear (int from_tty) | |
1164 | { | |
1165 | if ((have_full_symbols () || have_partial_symbols ()) | |
1166 | && from_tty | |
0430b0d6 AS |
1167 | && (symfile_objfile |
1168 | ? !query (_("Discard symbol table from `%s'? "), | |
1169 | symfile_objfile->name) | |
1170 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1171 | error (_("Not confirmed.")); |
1adeb98a FN |
1172 | free_all_objfiles (); |
1173 | ||
1174 | /* solib descriptors may have handles to objfiles. Since their | |
1175 | storage has just been released, we'd better wipe the solib | |
1176 | descriptors as well. | |
1177 | */ | |
e85a822c | 1178 | no_shared_libraries (NULL, from_tty); |
1adeb98a FN |
1179 | |
1180 | symfile_objfile = NULL; | |
1181 | if (from_tty) | |
a3f17187 | 1182 | printf_unfiltered (_("No symbol file now.\n")); |
1adeb98a FN |
1183 | } |
1184 | ||
77069918 JK |
1185 | struct build_id |
1186 | { | |
1187 | size_t size; | |
1188 | gdb_byte data[1]; | |
1189 | }; | |
1190 | ||
1191 | /* Locate NT_GNU_BUILD_ID from ABFD and return its content. */ | |
1192 | ||
1193 | static struct build_id * | |
1194 | build_id_bfd_get (bfd *abfd) | |
1195 | { | |
1196 | struct build_id *retval; | |
1197 | ||
1198 | if (!bfd_check_format (abfd, bfd_object) | |
1199 | || bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1200 | || elf_tdata (abfd)->build_id == NULL) | |
1201 | return NULL; | |
1202 | ||
1203 | retval = xmalloc (sizeof *retval - 1 + elf_tdata (abfd)->build_id_size); | |
1204 | retval->size = elf_tdata (abfd)->build_id_size; | |
1205 | memcpy (retval->data, elf_tdata (abfd)->build_id, retval->size); | |
1206 | ||
1207 | return retval; | |
1208 | } | |
1209 | ||
1210 | /* Return if FILENAME has NT_GNU_BUILD_ID matching the CHECK value. */ | |
1211 | ||
1212 | static int | |
1213 | build_id_verify (const char *filename, struct build_id *check) | |
1214 | { | |
1215 | bfd *abfd; | |
1216 | struct build_id *found = NULL; | |
1217 | int retval = 0; | |
1218 | ||
1219 | /* We expect to be silent on the non-existing files. */ | |
f1838a98 UW |
1220 | if (remote_filename_p (filename)) |
1221 | abfd = remote_bfd_open (filename, gnutarget); | |
1222 | else | |
1223 | abfd = bfd_openr (filename, gnutarget); | |
77069918 JK |
1224 | if (abfd == NULL) |
1225 | return 0; | |
1226 | ||
1227 | found = build_id_bfd_get (abfd); | |
1228 | ||
1229 | if (found == NULL) | |
1230 | warning (_("File \"%s\" has no build-id, file skipped"), filename); | |
1231 | else if (found->size != check->size | |
1232 | || memcmp (found->data, check->data, found->size) != 0) | |
1233 | warning (_("File \"%s\" has a different build-id, file skipped"), filename); | |
1234 | else | |
1235 | retval = 1; | |
1236 | ||
1237 | if (!bfd_close (abfd)) | |
1238 | warning (_("cannot close \"%s\": %s"), filename, | |
1239 | bfd_errmsg (bfd_get_error ())); | |
1240 | return retval; | |
1241 | } | |
1242 | ||
1243 | static char * | |
1244 | build_id_to_debug_filename (struct build_id *build_id) | |
1245 | { | |
1246 | char *link, *s, *retval = NULL; | |
1247 | gdb_byte *data = build_id->data; | |
1248 | size_t size = build_id->size; | |
1249 | ||
1250 | /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */ | |
1251 | link = xmalloc (strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1 | |
1252 | + 2 * size + (sizeof ".debug" - 1) + 1); | |
1253 | s = link + sprintf (link, "%s/.build-id/", debug_file_directory); | |
1254 | if (size > 0) | |
1255 | { | |
1256 | size--; | |
1257 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1258 | } | |
1259 | if (size > 0) | |
1260 | *s++ = '/'; | |
1261 | while (size-- > 0) | |
1262 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1263 | strcpy (s, ".debug"); | |
1264 | ||
1265 | /* lrealpath() is expensive even for the usually non-existent files. */ | |
1266 | if (access (link, F_OK) == 0) | |
1267 | retval = lrealpath (link); | |
1268 | xfree (link); | |
1269 | ||
1270 | if (retval != NULL && !build_id_verify (retval, build_id)) | |
1271 | { | |
1272 | xfree (retval); | |
1273 | retval = NULL; | |
1274 | } | |
1275 | ||
1276 | return retval; | |
1277 | } | |
1278 | ||
5b5d99cf JB |
1279 | static char * |
1280 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1281 | { | |
1282 | asection *sect; | |
1283 | bfd_size_type debuglink_size; | |
1284 | unsigned long crc32; | |
1285 | char *contents; | |
1286 | int crc_offset; | |
1287 | unsigned char *p; | |
5417f6dc | 1288 | |
5b5d99cf JB |
1289 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1290 | ||
1291 | if (sect == NULL) | |
1292 | return NULL; | |
1293 | ||
1294 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1295 | |
5b5d99cf JB |
1296 | contents = xmalloc (debuglink_size); |
1297 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1298 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1299 | ||
1300 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1301 | crc_offset = strlen (contents) + 1; | |
1302 | crc_offset = (crc_offset + 3) & ~3; | |
1303 | ||
1304 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1305 | |
5b5d99cf JB |
1306 | *crc32_out = crc32; |
1307 | return contents; | |
1308 | } | |
1309 | ||
1310 | static int | |
1311 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1312 | { | |
1313 | unsigned long file_crc = 0; | |
f1838a98 | 1314 | bfd *abfd; |
777ea8f1 | 1315 | gdb_byte buffer[8*1024]; |
5b5d99cf JB |
1316 | int count; |
1317 | ||
f1838a98 UW |
1318 | if (remote_filename_p (name)) |
1319 | abfd = remote_bfd_open (name, gnutarget); | |
1320 | else | |
1321 | abfd = bfd_openr (name, gnutarget); | |
1322 | ||
1323 | if (!abfd) | |
5b5d99cf JB |
1324 | return 0; |
1325 | ||
f1838a98 | 1326 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1327 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1328 | ||
f1838a98 | 1329 | bfd_close (abfd); |
5b5d99cf JB |
1330 | |
1331 | return crc == file_crc; | |
1332 | } | |
1333 | ||
aa28a74e | 1334 | char *debug_file_directory = NULL; |
920d2a44 AC |
1335 | static void |
1336 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1337 | struct cmd_list_element *c, const char *value) | |
1338 | { | |
1339 | fprintf_filtered (file, _("\ | |
1340 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1341 | value); | |
1342 | } | |
5b5d99cf JB |
1343 | |
1344 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1345 | #define DEBUG_SUBDIRECTORY ".debug" | |
1346 | #endif | |
1347 | ||
1348 | static char * | |
1349 | find_separate_debug_file (struct objfile *objfile) | |
1350 | { | |
1351 | asection *sect; | |
1352 | char *basename; | |
1353 | char *dir; | |
1354 | char *debugfile; | |
1355 | char *name_copy; | |
aa28a74e | 1356 | char *canon_name; |
5b5d99cf JB |
1357 | bfd_size_type debuglink_size; |
1358 | unsigned long crc32; | |
1359 | int i; | |
77069918 JK |
1360 | struct build_id *build_id; |
1361 | ||
1362 | build_id = build_id_bfd_get (objfile->obfd); | |
1363 | if (build_id != NULL) | |
1364 | { | |
1365 | char *build_id_name; | |
1366 | ||
1367 | build_id_name = build_id_to_debug_filename (build_id); | |
1368 | free (build_id); | |
1369 | /* Prevent looping on a stripped .debug file. */ | |
1370 | if (build_id_name != NULL && strcmp (build_id_name, objfile->name) == 0) | |
1371 | { | |
1372 | warning (_("\"%s\": separate debug info file has no debug info"), | |
1373 | build_id_name); | |
1374 | xfree (build_id_name); | |
1375 | } | |
1376 | else if (build_id_name != NULL) | |
1377 | return build_id_name; | |
1378 | } | |
5b5d99cf JB |
1379 | |
1380 | basename = get_debug_link_info (objfile, &crc32); | |
1381 | ||
1382 | if (basename == NULL) | |
1383 | return NULL; | |
5417f6dc | 1384 | |
5b5d99cf JB |
1385 | dir = xstrdup (objfile->name); |
1386 | ||
fe36c4f4 JB |
1387 | /* Strip off the final filename part, leaving the directory name, |
1388 | followed by a slash. Objfile names should always be absolute and | |
1389 | tilde-expanded, so there should always be a slash in there | |
1390 | somewhere. */ | |
5b5d99cf JB |
1391 | for (i = strlen(dir) - 1; i >= 0; i--) |
1392 | { | |
1393 | if (IS_DIR_SEPARATOR (dir[i])) | |
1394 | break; | |
1395 | } | |
fe36c4f4 | 1396 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1397 | dir[i+1] = '\0'; |
5417f6dc | 1398 | |
5b5d99cf JB |
1399 | debugfile = alloca (strlen (debug_file_directory) + 1 |
1400 | + strlen (dir) | |
1401 | + strlen (DEBUG_SUBDIRECTORY) | |
1402 | + strlen ("/") | |
5417f6dc | 1403 | + strlen (basename) |
5b5d99cf JB |
1404 | + 1); |
1405 | ||
1406 | /* First try in the same directory as the original file. */ | |
1407 | strcpy (debugfile, dir); | |
1408 | strcat (debugfile, basename); | |
1409 | ||
1410 | if (separate_debug_file_exists (debugfile, crc32)) | |
1411 | { | |
1412 | xfree (basename); | |
1413 | xfree (dir); | |
1414 | return xstrdup (debugfile); | |
1415 | } | |
5417f6dc | 1416 | |
5b5d99cf JB |
1417 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1418 | strcpy (debugfile, dir); | |
1419 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1420 | strcat (debugfile, "/"); | |
1421 | strcat (debugfile, basename); | |
1422 | ||
1423 | if (separate_debug_file_exists (debugfile, crc32)) | |
1424 | { | |
1425 | xfree (basename); | |
1426 | xfree (dir); | |
1427 | return xstrdup (debugfile); | |
1428 | } | |
5417f6dc | 1429 | |
5b5d99cf JB |
1430 | /* Then try in the global debugfile directory. */ |
1431 | strcpy (debugfile, debug_file_directory); | |
1432 | strcat (debugfile, "/"); | |
1433 | strcat (debugfile, dir); | |
5b5d99cf JB |
1434 | strcat (debugfile, basename); |
1435 | ||
1436 | if (separate_debug_file_exists (debugfile, crc32)) | |
1437 | { | |
1438 | xfree (basename); | |
1439 | xfree (dir); | |
1440 | return xstrdup (debugfile); | |
1441 | } | |
5417f6dc | 1442 | |
aa28a74e DJ |
1443 | /* If the file is in the sysroot, try using its base path in the |
1444 | global debugfile directory. */ | |
1445 | canon_name = lrealpath (dir); | |
1446 | if (canon_name | |
1447 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1448 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1449 | { | |
1450 | strcpy (debugfile, debug_file_directory); | |
1451 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1452 | strcat (debugfile, "/"); | |
1453 | strcat (debugfile, basename); | |
1454 | ||
1455 | if (separate_debug_file_exists (debugfile, crc32)) | |
1456 | { | |
1457 | xfree (canon_name); | |
1458 | xfree (basename); | |
1459 | xfree (dir); | |
1460 | return xstrdup (debugfile); | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | if (canon_name) | |
1465 | xfree (canon_name); | |
1466 | ||
5b5d99cf JB |
1467 | xfree (basename); |
1468 | xfree (dir); | |
1469 | return NULL; | |
1470 | } | |
1471 | ||
1472 | ||
c906108c SS |
1473 | /* This is the symbol-file command. Read the file, analyze its |
1474 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1475 | the command is rather bizarre: |
1476 | ||
1477 | 1. The function buildargv implements various quoting conventions | |
1478 | which are undocumented and have little or nothing in common with | |
1479 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1480 | ||
1481 | 2. Options are used, which are not generally used in GDB (perhaps | |
1482 | "set mapped on", "set readnow on" would be better) | |
1483 | ||
1484 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1485 | conventions (because it is confusing and inconvenient). */ |
1486 | ||
1487 | void | |
fba45db2 | 1488 | symbol_file_command (char *args, int from_tty) |
c906108c | 1489 | { |
c906108c SS |
1490 | dont_repeat (); |
1491 | ||
1492 | if (args == NULL) | |
1493 | { | |
1adeb98a | 1494 | symbol_file_clear (from_tty); |
c906108c SS |
1495 | } |
1496 | else | |
1497 | { | |
cb2f3a29 MK |
1498 | char **argv = buildargv (args); |
1499 | int flags = OBJF_USERLOADED; | |
1500 | struct cleanup *cleanups; | |
1501 | char *name = NULL; | |
1502 | ||
1503 | if (argv == NULL) | |
1504 | nomem (0); | |
1505 | ||
7a292a7a | 1506 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1507 | while (*argv != NULL) |
1508 | { | |
78a4a9b9 AC |
1509 | if (strcmp (*argv, "-readnow") == 0) |
1510 | flags |= OBJF_READNOW; | |
1511 | else if (**argv == '-') | |
8a3fe4f8 | 1512 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1513 | else |
1514 | { | |
cb2f3a29 | 1515 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1516 | name = *argv; |
78a4a9b9 | 1517 | } |
cb2f3a29 | 1518 | |
c906108c SS |
1519 | argv++; |
1520 | } | |
1521 | ||
1522 | if (name == NULL) | |
cb2f3a29 MK |
1523 | error (_("no symbol file name was specified")); |
1524 | ||
c906108c SS |
1525 | do_cleanups (cleanups); |
1526 | } | |
1527 | } | |
1528 | ||
1529 | /* Set the initial language. | |
1530 | ||
cb2f3a29 MK |
1531 | FIXME: A better solution would be to record the language in the |
1532 | psymtab when reading partial symbols, and then use it (if known) to | |
1533 | set the language. This would be a win for formats that encode the | |
1534 | language in an easily discoverable place, such as DWARF. For | |
1535 | stabs, we can jump through hoops looking for specially named | |
1536 | symbols or try to intuit the language from the specific type of | |
1537 | stabs we find, but we can't do that until later when we read in | |
1538 | full symbols. */ | |
c906108c | 1539 | |
8b60591b | 1540 | void |
fba45db2 | 1541 | set_initial_language (void) |
c906108c SS |
1542 | { |
1543 | struct partial_symtab *pst; | |
c5aa993b | 1544 | enum language lang = language_unknown; |
c906108c SS |
1545 | |
1546 | pst = find_main_psymtab (); | |
1547 | if (pst != NULL) | |
1548 | { | |
c5aa993b | 1549 | if (pst->filename != NULL) |
cb2f3a29 MK |
1550 | lang = deduce_language_from_filename (pst->filename); |
1551 | ||
c906108c SS |
1552 | if (lang == language_unknown) |
1553 | { | |
c5aa993b JM |
1554 | /* Make C the default language */ |
1555 | lang = language_c; | |
c906108c | 1556 | } |
cb2f3a29 | 1557 | |
c906108c | 1558 | set_language (lang); |
cb2f3a29 | 1559 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1560 | } |
1561 | } | |
1562 | ||
cb2f3a29 MK |
1563 | /* Open the file specified by NAME and hand it off to BFD for |
1564 | preliminary analysis. Return a newly initialized bfd *, which | |
1565 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1566 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1567 | |
1568 | bfd * | |
fba45db2 | 1569 | symfile_bfd_open (char *name) |
c906108c SS |
1570 | { |
1571 | bfd *sym_bfd; | |
1572 | int desc; | |
1573 | char *absolute_name; | |
1574 | ||
f1838a98 UW |
1575 | if (remote_filename_p (name)) |
1576 | { | |
1577 | name = xstrdup (name); | |
1578 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1579 | if (!sym_bfd) | |
1580 | { | |
1581 | make_cleanup (xfree, name); | |
1582 | error (_("`%s': can't open to read symbols: %s."), name, | |
1583 | bfd_errmsg (bfd_get_error ())); | |
1584 | } | |
1585 | ||
1586 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1587 | { | |
1588 | bfd_close (sym_bfd); | |
1589 | make_cleanup (xfree, name); | |
1590 | error (_("`%s': can't read symbols: %s."), name, | |
1591 | bfd_errmsg (bfd_get_error ())); | |
1592 | } | |
1593 | ||
1594 | return sym_bfd; | |
1595 | } | |
1596 | ||
cb2f3a29 | 1597 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1598 | |
1599 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 MK |
1600 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
1601 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1602 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1603 | if (desc < 0) |
1604 | { | |
1605 | char *exename = alloca (strlen (name) + 5); | |
1606 | strcat (strcpy (exename, name), ".exe"); | |
014d698b EZ |
1607 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
1608 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
c906108c SS |
1609 | } |
1610 | #endif | |
1611 | if (desc < 0) | |
1612 | { | |
b8c9b27d | 1613 | make_cleanup (xfree, name); |
c906108c SS |
1614 | perror_with_name (name); |
1615 | } | |
cb2f3a29 MK |
1616 | |
1617 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1618 | bfd. It'll be freed in free_objfile(). */ | |
1619 | xfree (name); | |
1620 | name = absolute_name; | |
c906108c | 1621 | |
9f76c2cd | 1622 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1623 | if (!sym_bfd) |
1624 | { | |
1625 | close (desc); | |
b8c9b27d | 1626 | make_cleanup (xfree, name); |
f1838a98 | 1627 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1628 | bfd_errmsg (bfd_get_error ())); |
1629 | } | |
549c1eea | 1630 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1631 | |
1632 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1633 | { | |
cb2f3a29 MK |
1634 | /* FIXME: should be checking for errors from bfd_close (for one |
1635 | thing, on error it does not free all the storage associated | |
1636 | with the bfd). */ | |
1637 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1638 | make_cleanup (xfree, name); |
f1838a98 | 1639 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1640 | bfd_errmsg (bfd_get_error ())); |
1641 | } | |
cb2f3a29 MK |
1642 | |
1643 | return sym_bfd; | |
c906108c SS |
1644 | } |
1645 | ||
cb2f3a29 MK |
1646 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1647 | the section was not found. */ | |
1648 | ||
0e931cf0 JB |
1649 | int |
1650 | get_section_index (struct objfile *objfile, char *section_name) | |
1651 | { | |
1652 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1653 | |
0e931cf0 JB |
1654 | if (sect) |
1655 | return sect->index; | |
1656 | else | |
1657 | return -1; | |
1658 | } | |
1659 | ||
cb2f3a29 MK |
1660 | /* Link SF into the global symtab_fns list. Called on startup by the |
1661 | _initialize routine in each object file format reader, to register | |
1662 | information about each format the the reader is prepared to | |
1663 | handle. */ | |
c906108c SS |
1664 | |
1665 | void | |
fba45db2 | 1666 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1667 | { |
1668 | sf->next = symtab_fns; | |
1669 | symtab_fns = sf; | |
1670 | } | |
1671 | ||
cb2f3a29 MK |
1672 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1673 | either returns or calls error(). The result is an initialized | |
1674 | struct sym_fns in the objfile structure, that contains cached | |
1675 | information about the symbol file. */ | |
c906108c | 1676 | |
31d99776 DJ |
1677 | static struct sym_fns * |
1678 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1679 | { |
1680 | struct sym_fns *sf; | |
31d99776 | 1681 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1682 | |
75245b24 MS |
1683 | if (our_flavour == bfd_target_srec_flavour |
1684 | || our_flavour == bfd_target_ihex_flavour | |
1685 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1686 | return NULL; /* No symbols. */ |
75245b24 | 1687 | |
c5aa993b | 1688 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1689 | if (our_flavour == sf->sym_flavour) |
1690 | return sf; | |
cb2f3a29 | 1691 | |
8a3fe4f8 | 1692 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1693 | bfd_get_target (abfd)); |
c906108c SS |
1694 | } |
1695 | \f | |
cb2f3a29 | 1696 | |
c906108c SS |
1697 | /* This function runs the load command of our current target. */ |
1698 | ||
1699 | static void | |
fba45db2 | 1700 | load_command (char *arg, int from_tty) |
c906108c | 1701 | { |
4487aabf PA |
1702 | /* The user might be reloading because the binary has changed. Take |
1703 | this opportunity to check. */ | |
1704 | reopen_exec_file (); | |
1705 | reread_symbols (); | |
1706 | ||
c906108c | 1707 | if (arg == NULL) |
1986bccd AS |
1708 | { |
1709 | char *parg; | |
1710 | int count = 0; | |
1711 | ||
1712 | parg = arg = get_exec_file (1); | |
1713 | ||
1714 | /* Count how many \ " ' tab space there are in the name. */ | |
1715 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1716 | { | |
1717 | parg++; | |
1718 | count++; | |
1719 | } | |
1720 | ||
1721 | if (count) | |
1722 | { | |
1723 | /* We need to quote this string so buildargv can pull it apart. */ | |
1724 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1725 | char *ptemp = temp; | |
1726 | char *prev; | |
1727 | ||
1728 | make_cleanup (xfree, temp); | |
1729 | ||
1730 | prev = parg = arg; | |
1731 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1732 | { | |
1733 | strncpy (ptemp, prev, parg - prev); | |
1734 | ptemp += parg - prev; | |
1735 | prev = parg++; | |
1736 | *ptemp++ = '\\'; | |
1737 | } | |
1738 | strcpy (ptemp, prev); | |
1739 | ||
1740 | arg = temp; | |
1741 | } | |
1742 | } | |
1743 | ||
c906108c | 1744 | target_load (arg, from_tty); |
2889e661 JB |
1745 | |
1746 | /* After re-loading the executable, we don't really know which | |
1747 | overlays are mapped any more. */ | |
1748 | overlay_cache_invalid = 1; | |
c906108c SS |
1749 | } |
1750 | ||
1751 | /* This version of "load" should be usable for any target. Currently | |
1752 | it is just used for remote targets, not inftarg.c or core files, | |
1753 | on the theory that only in that case is it useful. | |
1754 | ||
1755 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1756 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1757 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1758 | performance compares. */ | |
917317f4 | 1759 | |
917317f4 JM |
1760 | static int validate_download = 0; |
1761 | ||
e4f9b4d5 MS |
1762 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1763 | ||
1764 | static void | |
1765 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1766 | { | |
1767 | bfd_size_type *sum = data; | |
1768 | ||
2c500098 | 1769 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1770 | } |
1771 | ||
1772 | /* Opaque data for load_section_callback. */ | |
1773 | struct load_section_data { | |
1774 | unsigned long load_offset; | |
a76d924d DJ |
1775 | struct load_progress_data *progress_data; |
1776 | VEC(memory_write_request_s) *requests; | |
1777 | }; | |
1778 | ||
1779 | /* Opaque data for load_progress. */ | |
1780 | struct load_progress_data { | |
1781 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1782 | unsigned long write_count; |
1783 | unsigned long data_count; | |
1784 | bfd_size_type total_size; | |
a76d924d DJ |
1785 | }; |
1786 | ||
1787 | /* Opaque data for load_progress for a single section. */ | |
1788 | struct load_progress_section_data { | |
1789 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1790 | |
a76d924d | 1791 | /* Per-section data. */ |
cf7a04e8 DJ |
1792 | const char *section_name; |
1793 | ULONGEST section_sent; | |
1794 | ULONGEST section_size; | |
1795 | CORE_ADDR lma; | |
1796 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1797 | }; |
1798 | ||
a76d924d | 1799 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1800 | |
1801 | static void | |
1802 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1803 | { | |
a76d924d DJ |
1804 | struct load_progress_section_data *args = untyped_arg; |
1805 | struct load_progress_data *totals; | |
1806 | ||
1807 | if (args == NULL) | |
1808 | /* Writing padding data. No easy way to get at the cumulative | |
1809 | stats, so just ignore this. */ | |
1810 | return; | |
1811 | ||
1812 | totals = args->cumulative; | |
1813 | ||
1814 | if (bytes == 0 && args->section_sent == 0) | |
1815 | { | |
1816 | /* The write is just starting. Let the user know we've started | |
1817 | this section. */ | |
1818 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |
1819 | args->section_name, paddr_nz (args->section_size), | |
1820 | paddr_nz (args->lma)); | |
1821 | return; | |
1822 | } | |
cf7a04e8 DJ |
1823 | |
1824 | if (validate_download) | |
1825 | { | |
1826 | /* Broken memories and broken monitors manifest themselves here | |
1827 | when bring new computers to life. This doubles already slow | |
1828 | downloads. */ | |
1829 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1830 | might add a verify_memory() method to the target vector and | |
1831 | then use that. remote.c could implement that method using | |
1832 | the ``qCRC'' packet. */ | |
1833 | gdb_byte *check = xmalloc (bytes); | |
1834 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1835 | ||
1836 | if (target_read_memory (args->lma, check, bytes) != 0) | |
1837 | error (_("Download verify read failed at 0x%s"), | |
1838 | paddr (args->lma)); | |
1839 | if (memcmp (args->buffer, check, bytes) != 0) | |
1840 | error (_("Download verify compare failed at 0x%s"), | |
1841 | paddr (args->lma)); | |
1842 | do_cleanups (verify_cleanups); | |
1843 | } | |
a76d924d | 1844 | totals->data_count += bytes; |
cf7a04e8 DJ |
1845 | args->lma += bytes; |
1846 | args->buffer += bytes; | |
a76d924d | 1847 | totals->write_count += 1; |
cf7a04e8 DJ |
1848 | args->section_sent += bytes; |
1849 | if (quit_flag | |
1850 | || (deprecated_ui_load_progress_hook != NULL | |
1851 | && deprecated_ui_load_progress_hook (args->section_name, | |
1852 | args->section_sent))) | |
1853 | error (_("Canceled the download")); | |
1854 | ||
1855 | if (deprecated_show_load_progress != NULL) | |
1856 | deprecated_show_load_progress (args->section_name, | |
1857 | args->section_sent, | |
1858 | args->section_size, | |
a76d924d DJ |
1859 | totals->data_count, |
1860 | totals->total_size); | |
cf7a04e8 DJ |
1861 | } |
1862 | ||
e4f9b4d5 MS |
1863 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1864 | ||
1865 | static void | |
1866 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1867 | { | |
a76d924d | 1868 | struct memory_write_request *new_request; |
e4f9b4d5 | 1869 | struct load_section_data *args = data; |
a76d924d | 1870 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1871 | bfd_size_type size = bfd_get_section_size (asec); |
1872 | gdb_byte *buffer; | |
cf7a04e8 | 1873 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1874 | |
cf7a04e8 DJ |
1875 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1876 | return; | |
e4f9b4d5 | 1877 | |
cf7a04e8 DJ |
1878 | if (size == 0) |
1879 | return; | |
e4f9b4d5 | 1880 | |
a76d924d DJ |
1881 | new_request = VEC_safe_push (memory_write_request_s, |
1882 | args->requests, NULL); | |
1883 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1884 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1885 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1886 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1887 | new_request->data = xmalloc (size); | |
1888 | new_request->baton = section_data; | |
cf7a04e8 | 1889 | |
a76d924d | 1890 | buffer = new_request->data; |
cf7a04e8 | 1891 | |
a76d924d DJ |
1892 | section_data->cumulative = args->progress_data; |
1893 | section_data->section_name = sect_name; | |
1894 | section_data->section_size = size; | |
1895 | section_data->lma = new_request->begin; | |
1896 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1897 | |
1898 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1899 | } |
1900 | ||
1901 | /* Clean up an entire memory request vector, including load | |
1902 | data and progress records. */ | |
cf7a04e8 | 1903 | |
a76d924d DJ |
1904 | static void |
1905 | clear_memory_write_data (void *arg) | |
1906 | { | |
1907 | VEC(memory_write_request_s) **vec_p = arg; | |
1908 | VEC(memory_write_request_s) *vec = *vec_p; | |
1909 | int i; | |
1910 | struct memory_write_request *mr; | |
cf7a04e8 | 1911 | |
a76d924d DJ |
1912 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1913 | { | |
1914 | xfree (mr->data); | |
1915 | xfree (mr->baton); | |
1916 | } | |
1917 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1918 | } |
1919 | ||
c906108c | 1920 | void |
917317f4 | 1921 | generic_load (char *args, int from_tty) |
c906108c | 1922 | { |
c906108c | 1923 | bfd *loadfile_bfd; |
2b71414d | 1924 | struct timeval start_time, end_time; |
917317f4 | 1925 | char *filename; |
1986bccd | 1926 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1927 | struct load_section_data cbdata; |
a76d924d DJ |
1928 | struct load_progress_data total_progress; |
1929 | ||
e4f9b4d5 | 1930 | CORE_ADDR entry; |
1986bccd | 1931 | char **argv; |
e4f9b4d5 | 1932 | |
a76d924d DJ |
1933 | memset (&cbdata, 0, sizeof (cbdata)); |
1934 | memset (&total_progress, 0, sizeof (total_progress)); | |
1935 | cbdata.progress_data = &total_progress; | |
1936 | ||
1937 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1938 | |
1986bccd AS |
1939 | argv = buildargv (args); |
1940 | ||
1941 | if (argv == NULL) | |
1942 | nomem(0); | |
1943 | ||
1944 | make_cleanup_freeargv (argv); | |
1945 | ||
1946 | filename = tilde_expand (argv[0]); | |
1947 | make_cleanup (xfree, filename); | |
1948 | ||
1949 | if (argv[1] != NULL) | |
917317f4 JM |
1950 | { |
1951 | char *endptr; | |
ba5f2f8a | 1952 | |
1986bccd AS |
1953 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1954 | ||
1955 | /* If the last word was not a valid number then | |
1956 | treat it as a file name with spaces in. */ | |
1957 | if (argv[1] == endptr) | |
1958 | error (_("Invalid download offset:%s."), argv[1]); | |
1959 | ||
1960 | if (argv[2] != NULL) | |
1961 | error (_("Too many parameters.")); | |
917317f4 | 1962 | } |
c906108c | 1963 | |
917317f4 | 1964 | /* Open the file for loading. */ |
c906108c SS |
1965 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1966 | if (loadfile_bfd == NULL) | |
1967 | { | |
1968 | perror_with_name (filename); | |
1969 | return; | |
1970 | } | |
917317f4 | 1971 | |
c906108c SS |
1972 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1973 | on error it does not free all the storage associated with the | |
1974 | bfd). */ | |
5c65bbb6 | 1975 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1976 | |
c5aa993b | 1977 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1978 | { |
8a3fe4f8 | 1979 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1980 | bfd_errmsg (bfd_get_error ())); |
1981 | } | |
c5aa993b | 1982 | |
5417f6dc | 1983 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1984 | (void *) &total_progress.total_size); |
1985 | ||
1986 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1987 | |
2b71414d | 1988 | gettimeofday (&start_time, NULL); |
c906108c | 1989 | |
a76d924d DJ |
1990 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1991 | load_progress) != 0) | |
1992 | error (_("Load failed")); | |
c906108c | 1993 | |
2b71414d | 1994 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1995 | |
e4f9b4d5 | 1996 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1997 | ui_out_text (uiout, "Start address "); |
1998 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1999 | ui_out_text (uiout, ", load size "); | |
a76d924d | 2000 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 2001 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
2002 | /* We were doing this in remote-mips.c, I suspect it is right |
2003 | for other targets too. */ | |
2004 | write_pc (entry); | |
c906108c | 2005 | |
7ca9f392 AC |
2006 | /* FIXME: are we supposed to call symbol_file_add or not? According |
2007 | to a comment from remote-mips.c (where a call to symbol_file_add | |
2008 | was commented out), making the call confuses GDB if more than one | |
2009 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 2010 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 2011 | |
a76d924d DJ |
2012 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2013 | total_progress.write_count, | |
2014 | &start_time, &end_time); | |
c906108c SS |
2015 | |
2016 | do_cleanups (old_cleanups); | |
2017 | } | |
2018 | ||
2019 | /* Report how fast the transfer went. */ | |
2020 | ||
917317f4 JM |
2021 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
2022 | replaced by print_transfer_performance (with a very different | |
2023 | function signature). */ | |
2024 | ||
c906108c | 2025 | void |
fba45db2 KB |
2026 | report_transfer_performance (unsigned long data_count, time_t start_time, |
2027 | time_t end_time) | |
c906108c | 2028 | { |
2b71414d DJ |
2029 | struct timeval start, end; |
2030 | ||
2031 | start.tv_sec = start_time; | |
2032 | start.tv_usec = 0; | |
2033 | end.tv_sec = end_time; | |
2034 | end.tv_usec = 0; | |
2035 | ||
2036 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2037 | } |
2038 | ||
2039 | void | |
d9fcf2fb | 2040 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2041 | unsigned long data_count, |
2042 | unsigned long write_count, | |
2b71414d DJ |
2043 | const struct timeval *start_time, |
2044 | const struct timeval *end_time) | |
917317f4 | 2045 | { |
9f43d28c | 2046 | ULONGEST time_count; |
2b71414d DJ |
2047 | |
2048 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2049 | accuracy and overflow. */ | |
2050 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2051 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2052 | ||
8b93c638 JM |
2053 | ui_out_text (uiout, "Transfer rate: "); |
2054 | if (time_count > 0) | |
2055 | { | |
9f43d28c DJ |
2056 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2057 | ||
2058 | if (ui_out_is_mi_like_p (uiout)) | |
2059 | { | |
2060 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2061 | ui_out_text (uiout, " bits/sec"); | |
2062 | } | |
2063 | else if (rate < 1024) | |
2064 | { | |
2065 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2066 | ui_out_text (uiout, " bytes/sec"); | |
2067 | } | |
2068 | else | |
2069 | { | |
2070 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2071 | ui_out_text (uiout, " KB/sec"); | |
2072 | } | |
8b93c638 JM |
2073 | } |
2074 | else | |
2075 | { | |
ba5f2f8a | 2076 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2077 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2078 | } |
2079 | if (write_count > 0) | |
2080 | { | |
2081 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2082 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2083 | ui_out_text (uiout, " bytes/write"); |
2084 | } | |
2085 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2086 | } |
2087 | ||
2088 | /* This function allows the addition of incrementally linked object files. | |
2089 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2090 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2091 | special case syntax for the rombug target (Rombug is the boot | |
2092 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2093 | rombug case, the user doesn't need to supply a text address, | |
2094 | instead a call to target_link() (in target.c) would supply the | |
2095 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2096 | |
c906108c | 2097 | static void |
fba45db2 | 2098 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2099 | { |
db162d44 | 2100 | char *filename = NULL; |
2df3850c | 2101 | int flags = OBJF_USERLOADED; |
c906108c | 2102 | char *arg; |
2acceee2 | 2103 | int expecting_option = 0; |
db162d44 | 2104 | int section_index = 0; |
2acceee2 JM |
2105 | int argcnt = 0; |
2106 | int sec_num = 0; | |
2107 | int i; | |
db162d44 EZ |
2108 | int expecting_sec_name = 0; |
2109 | int expecting_sec_addr = 0; | |
5b96932b | 2110 | char **argv; |
db162d44 | 2111 | |
a39a16c4 | 2112 | struct sect_opt |
2acceee2 | 2113 | { |
2acceee2 JM |
2114 | char *name; |
2115 | char *value; | |
a39a16c4 | 2116 | }; |
db162d44 | 2117 | |
a39a16c4 MM |
2118 | struct section_addr_info *section_addrs; |
2119 | struct sect_opt *sect_opts = NULL; | |
2120 | size_t num_sect_opts = 0; | |
3017564a | 2121 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2122 | |
a39a16c4 | 2123 | num_sect_opts = 16; |
5417f6dc | 2124 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2125 | * sizeof (struct sect_opt)); |
2126 | ||
c906108c SS |
2127 | dont_repeat (); |
2128 | ||
2129 | if (args == NULL) | |
8a3fe4f8 | 2130 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2131 | |
5b96932b AS |
2132 | argv = buildargv (args); |
2133 | make_cleanup_freeargv (argv); | |
db162d44 | 2134 | |
5b96932b AS |
2135 | if (argv == NULL) |
2136 | nomem (0); | |
db162d44 | 2137 | |
5b96932b AS |
2138 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2139 | { | |
2140 | /* Process the argument. */ | |
db162d44 | 2141 | if (argcnt == 0) |
c906108c | 2142 | { |
db162d44 EZ |
2143 | /* The first argument is the file name. */ |
2144 | filename = tilde_expand (arg); | |
3017564a | 2145 | make_cleanup (xfree, filename); |
c906108c | 2146 | } |
db162d44 | 2147 | else |
7a78ae4e ND |
2148 | if (argcnt == 1) |
2149 | { | |
2150 | /* The second argument is always the text address at which | |
2151 | to load the program. */ | |
2152 | sect_opts[section_index].name = ".text"; | |
2153 | sect_opts[section_index].value = arg; | |
f414f22f | 2154 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2155 | { |
2156 | num_sect_opts *= 2; | |
5417f6dc | 2157 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2158 | xrealloc (sect_opts, |
5417f6dc | 2159 | num_sect_opts |
a39a16c4 MM |
2160 | * sizeof (struct sect_opt))); |
2161 | } | |
7a78ae4e ND |
2162 | } |
2163 | else | |
2164 | { | |
2165 | /* It's an option (starting with '-') or it's an argument | |
2166 | to an option */ | |
2167 | ||
2168 | if (*arg == '-') | |
2169 | { | |
78a4a9b9 AC |
2170 | if (strcmp (arg, "-readnow") == 0) |
2171 | flags |= OBJF_READNOW; | |
2172 | else if (strcmp (arg, "-s") == 0) | |
2173 | { | |
2174 | expecting_sec_name = 1; | |
2175 | expecting_sec_addr = 1; | |
2176 | } | |
7a78ae4e ND |
2177 | } |
2178 | else | |
2179 | { | |
2180 | if (expecting_sec_name) | |
db162d44 | 2181 | { |
7a78ae4e ND |
2182 | sect_opts[section_index].name = arg; |
2183 | expecting_sec_name = 0; | |
db162d44 EZ |
2184 | } |
2185 | else | |
7a78ae4e ND |
2186 | if (expecting_sec_addr) |
2187 | { | |
2188 | sect_opts[section_index].value = arg; | |
2189 | expecting_sec_addr = 0; | |
f414f22f | 2190 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2191 | { |
2192 | num_sect_opts *= 2; | |
5417f6dc | 2193 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2194 | xrealloc (sect_opts, |
5417f6dc | 2195 | num_sect_opts |
a39a16c4 MM |
2196 | * sizeof (struct sect_opt))); |
2197 | } | |
7a78ae4e ND |
2198 | } |
2199 | else | |
8a3fe4f8 | 2200 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2201 | } |
2202 | } | |
c906108c | 2203 | } |
c906108c | 2204 | |
927890d0 JB |
2205 | /* This command takes at least two arguments. The first one is a |
2206 | filename, and the second is the address where this file has been | |
2207 | loaded. Abort now if this address hasn't been provided by the | |
2208 | user. */ | |
2209 | if (section_index < 1) | |
2210 | error (_("The address where %s has been loaded is missing"), filename); | |
2211 | ||
db162d44 EZ |
2212 | /* Print the prompt for the query below. And save the arguments into |
2213 | a sect_addr_info structure to be passed around to other | |
2214 | functions. We have to split this up into separate print | |
bb599908 | 2215 | statements because hex_string returns a local static |
db162d44 | 2216 | string. */ |
5417f6dc | 2217 | |
a3f17187 | 2218 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2219 | section_addrs = alloc_section_addr_info (section_index); |
2220 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2221 | for (i = 0; i < section_index; i++) |
c906108c | 2222 | { |
db162d44 EZ |
2223 | CORE_ADDR addr; |
2224 | char *val = sect_opts[i].value; | |
2225 | char *sec = sect_opts[i].name; | |
5417f6dc | 2226 | |
ae822768 | 2227 | addr = parse_and_eval_address (val); |
db162d44 | 2228 | |
db162d44 EZ |
2229 | /* Here we store the section offsets in the order they were |
2230 | entered on the command line. */ | |
a39a16c4 MM |
2231 | section_addrs->other[sec_num].name = sec; |
2232 | section_addrs->other[sec_num].addr = addr; | |
35076fa0 | 2233 | printf_unfiltered ("\t%s_addr = %s\n", sec, paddress (addr)); |
db162d44 EZ |
2234 | sec_num++; |
2235 | ||
5417f6dc | 2236 | /* The object's sections are initialized when a |
db162d44 | 2237 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2238 | This happens in reread_symbols. |
db162d44 EZ |
2239 | At this point, we don't know what file type this is, |
2240 | so we can't determine what section names are valid. */ | |
2acceee2 | 2241 | } |
db162d44 | 2242 | |
2acceee2 | 2243 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2244 | error (_("Not confirmed.")); |
c906108c | 2245 | |
a39a16c4 | 2246 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
2247 | |
2248 | /* Getting new symbols may change our opinion about what is | |
2249 | frameless. */ | |
2250 | reinit_frame_cache (); | |
db162d44 | 2251 | do_cleanups (my_cleanups); |
c906108c SS |
2252 | } |
2253 | \f | |
2254 | static void | |
fba45db2 | 2255 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
2256 | { |
2257 | #ifdef ADD_SHARED_SYMBOL_FILES | |
2258 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
2259 | #else | |
8a3fe4f8 | 2260 | error (_("This command is not available in this configuration of GDB.")); |
c5aa993b | 2261 | #endif |
c906108c SS |
2262 | } |
2263 | \f | |
2264 | /* Re-read symbols if a symbol-file has changed. */ | |
2265 | void | |
fba45db2 | 2266 | reread_symbols (void) |
c906108c SS |
2267 | { |
2268 | struct objfile *objfile; | |
2269 | long new_modtime; | |
2270 | int reread_one = 0; | |
2271 | struct stat new_statbuf; | |
2272 | int res; | |
2273 | ||
2274 | /* With the addition of shared libraries, this should be modified, | |
2275 | the load time should be saved in the partial symbol tables, since | |
2276 | different tables may come from different source files. FIXME. | |
2277 | This routine should then walk down each partial symbol table | |
2278 | and see if the symbol table that it originates from has been changed */ | |
2279 | ||
c5aa993b JM |
2280 | for (objfile = object_files; objfile; objfile = objfile->next) |
2281 | { | |
2282 | if (objfile->obfd) | |
2283 | { | |
52d16ba8 | 2284 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
2285 | /* If this object is from a shared library, then you should |
2286 | stat on the library name, not member name. */ | |
c906108c | 2287 | |
c5aa993b JM |
2288 | if (objfile->obfd->my_archive) |
2289 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2290 | else | |
c906108c | 2291 | #endif |
c5aa993b JM |
2292 | res = stat (objfile->name, &new_statbuf); |
2293 | if (res != 0) | |
c906108c | 2294 | { |
c5aa993b | 2295 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
a3f17187 | 2296 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
c5aa993b JM |
2297 | objfile->name); |
2298 | continue; | |
c906108c | 2299 | } |
c5aa993b JM |
2300 | new_modtime = new_statbuf.st_mtime; |
2301 | if (new_modtime != objfile->mtime) | |
c906108c | 2302 | { |
c5aa993b JM |
2303 | struct cleanup *old_cleanups; |
2304 | struct section_offsets *offsets; | |
2305 | int num_offsets; | |
c5aa993b JM |
2306 | char *obfd_filename; |
2307 | ||
a3f17187 | 2308 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), |
c5aa993b JM |
2309 | objfile->name); |
2310 | ||
2311 | /* There are various functions like symbol_file_add, | |
2312 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2313 | appear to do what we want. But they have various other | |
2314 | effects which we *don't* want. So we just do stuff | |
2315 | ourselves. We don't worry about mapped files (for one thing, | |
2316 | any mapped file will be out of date). */ | |
2317 | ||
2318 | /* If we get an error, blow away this objfile (not sure if | |
2319 | that is the correct response for things like shared | |
2320 | libraries). */ | |
74b7792f | 2321 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 2322 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 2323 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b | 2324 | |
b2de52bb JK |
2325 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), |
2326 | bfd_get_filename (exec_bfd)) == 0) | |
2327 | { | |
2328 | /* Reload EXEC_BFD without asking anything. */ | |
2329 | ||
2330 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2331 | } | |
2332 | ||
c5aa993b JM |
2333 | /* Clean up any state BFD has sitting around. We don't need |
2334 | to close the descriptor but BFD lacks a way of closing the | |
2335 | BFD without closing the descriptor. */ | |
2336 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2337 | if (!bfd_close (objfile->obfd)) | |
8a3fe4f8 | 2338 | error (_("Can't close BFD for %s: %s"), objfile->name, |
c5aa993b | 2339 | bfd_errmsg (bfd_get_error ())); |
f1838a98 UW |
2340 | if (remote_filename_p (obfd_filename)) |
2341 | objfile->obfd = remote_bfd_open (obfd_filename, gnutarget); | |
2342 | else | |
2343 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
c5aa993b | 2344 | if (objfile->obfd == NULL) |
8a3fe4f8 | 2345 | error (_("Can't open %s to read symbols."), objfile->name); |
c5aa993b JM |
2346 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2347 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
8a3fe4f8 | 2348 | error (_("Can't read symbols from %s: %s."), objfile->name, |
c5aa993b JM |
2349 | bfd_errmsg (bfd_get_error ())); |
2350 | ||
2351 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 2352 | objfile_obstack. */ |
c5aa993b | 2353 | num_offsets = objfile->num_sections; |
5417f6dc | 2354 | offsets = ((struct section_offsets *) |
a39a16c4 | 2355 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 2356 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 2357 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b | 2358 | |
ae5a43e0 DJ |
2359 | /* Remove any references to this objfile in the global |
2360 | value lists. */ | |
2361 | preserve_values (objfile); | |
2362 | ||
c5aa993b JM |
2363 | /* Nuke all the state that we will re-read. Much of the following |
2364 | code which sets things to NULL really is necessary to tell | |
2365 | other parts of GDB that there is nothing currently there. */ | |
2366 | ||
2367 | /* FIXME: Do we have to free a whole linked list, or is this | |
2368 | enough? */ | |
2369 | if (objfile->global_psymbols.list) | |
2dc74dc1 | 2370 | xfree (objfile->global_psymbols.list); |
c5aa993b JM |
2371 | memset (&objfile->global_psymbols, 0, |
2372 | sizeof (objfile->global_psymbols)); | |
2373 | if (objfile->static_psymbols.list) | |
2dc74dc1 | 2374 | xfree (objfile->static_psymbols.list); |
c5aa993b JM |
2375 | memset (&objfile->static_psymbols, 0, |
2376 | sizeof (objfile->static_psymbols)); | |
2377 | ||
2378 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
2379 | bcache_xfree (objfile->psymbol_cache); |
2380 | objfile->psymbol_cache = bcache_xmalloc (); | |
2381 | bcache_xfree (objfile->macro_cache); | |
2382 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
2383 | if (objfile->demangled_names_hash != NULL) |
2384 | { | |
2385 | htab_delete (objfile->demangled_names_hash); | |
2386 | objfile->demangled_names_hash = NULL; | |
2387 | } | |
b99607ea | 2388 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
2389 | objfile->sections = NULL; |
2390 | objfile->symtabs = NULL; | |
2391 | objfile->psymtabs = NULL; | |
2392 | objfile->free_psymtabs = NULL; | |
a1b8c067 | 2393 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 2394 | objfile->msymbols = NULL; |
0a6ddd08 | 2395 | objfile->deprecated_sym_private = NULL; |
c5aa993b | 2396 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
2397 | memset (&objfile->msymbol_hash, 0, |
2398 | sizeof (objfile->msymbol_hash)); | |
2399 | memset (&objfile->msymbol_demangled_hash, 0, | |
2400 | sizeof (objfile->msymbol_demangled_hash)); | |
7b097ae3 | 2401 | clear_objfile_data (objfile); |
c5aa993b JM |
2402 | if (objfile->sf != NULL) |
2403 | { | |
2404 | (*objfile->sf->sym_finish) (objfile); | |
2405 | } | |
2406 | ||
af5f3db6 AC |
2407 | objfile->psymbol_cache = bcache_xmalloc (); |
2408 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
2409 | /* obstack_init also initializes the obstack so it is |
2410 | empty. We could use obstack_specify_allocation but | |
2411 | gdb_obstack.h specifies the alloc/dealloc | |
2412 | functions. */ | |
2413 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
2414 | if (build_objfile_section_table (objfile)) |
2415 | { | |
8a3fe4f8 | 2416 | error (_("Can't find the file sections in `%s': %s"), |
c5aa993b JM |
2417 | objfile->name, bfd_errmsg (bfd_get_error ())); |
2418 | } | |
15831452 | 2419 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2420 | |
2421 | /* We use the same section offsets as from last time. I'm not | |
2422 | sure whether that is always correct for shared libraries. */ | |
2423 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 2424 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 2425 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 2426 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 2427 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
2428 | objfile->num_sections = num_offsets; |
2429 | ||
2430 | /* What the hell is sym_new_init for, anyway? The concept of | |
2431 | distinguishing between the main file and additional files | |
2432 | in this way seems rather dubious. */ | |
2433 | if (objfile == symfile_objfile) | |
2434 | { | |
2435 | (*objfile->sf->sym_new_init) (objfile); | |
c5aa993b JM |
2436 | } |
2437 | ||
2438 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2439 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2440 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2441 | zero is OK since dbxread.c also does what it needs to do if | |
2442 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2443 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2444 | if (!have_partial_symbols () && !have_full_symbols ()) |
2445 | { | |
2446 | wrap_here (""); | |
a3f17187 | 2447 | printf_unfiltered (_("(no debugging symbols found)\n")); |
c5aa993b JM |
2448 | wrap_here (""); |
2449 | } | |
2450 | objfile->flags |= OBJF_SYMS; | |
2451 | ||
2452 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2453 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2454 | |
c5aa993b JM |
2455 | /* Getting new symbols may change our opinion about what is |
2456 | frameless. */ | |
c906108c | 2457 | |
c5aa993b | 2458 | reinit_frame_cache (); |
c906108c | 2459 | |
c5aa993b JM |
2460 | /* Discard cleanups as symbol reading was successful. */ |
2461 | discard_cleanups (old_cleanups); | |
c906108c | 2462 | |
c5aa993b JM |
2463 | /* If the mtime has changed between the time we set new_modtime |
2464 | and now, we *want* this to be out of date, so don't call stat | |
2465 | again now. */ | |
2466 | objfile->mtime = new_modtime; | |
2467 | reread_one = 1; | |
5b5d99cf | 2468 | reread_separate_symbols (objfile); |
6528a9ea | 2469 | init_entry_point_info (objfile); |
c5aa993b | 2470 | } |
c906108c SS |
2471 | } |
2472 | } | |
c906108c SS |
2473 | |
2474 | if (reread_one) | |
ea53e89f JB |
2475 | { |
2476 | clear_symtab_users (); | |
2477 | /* At least one objfile has changed, so we can consider that | |
2478 | the executable we're debugging has changed too. */ | |
781b42b0 | 2479 | observer_notify_executable_changed (); |
ea53e89f JB |
2480 | } |
2481 | ||
c906108c | 2482 | } |
5b5d99cf JB |
2483 | |
2484 | ||
2485 | /* Handle separate debug info for OBJFILE, which has just been | |
2486 | re-read: | |
2487 | - If we had separate debug info before, but now we don't, get rid | |
2488 | of the separated objfile. | |
2489 | - If we didn't have separated debug info before, but now we do, | |
2490 | read in the new separated debug info file. | |
2491 | - If the debug link points to a different file, toss the old one | |
2492 | and read the new one. | |
2493 | This function does *not* handle the case where objfile is still | |
2494 | using the same separate debug info file, but that file's timestamp | |
2495 | has changed. That case should be handled by the loop in | |
2496 | reread_symbols already. */ | |
2497 | static void | |
2498 | reread_separate_symbols (struct objfile *objfile) | |
2499 | { | |
2500 | char *debug_file; | |
2501 | unsigned long crc32; | |
2502 | ||
2503 | /* Does the updated objfile's debug info live in a | |
2504 | separate file? */ | |
2505 | debug_file = find_separate_debug_file (objfile); | |
2506 | ||
2507 | if (objfile->separate_debug_objfile) | |
2508 | { | |
2509 | /* There are two cases where we need to get rid of | |
2510 | the old separated debug info objfile: | |
2511 | - if the new primary objfile doesn't have | |
2512 | separated debug info, or | |
2513 | - if the new primary objfile has separate debug | |
2514 | info, but it's under a different filename. | |
5417f6dc | 2515 | |
5b5d99cf JB |
2516 | If the old and new objfiles both have separate |
2517 | debug info, under the same filename, then we're | |
2518 | okay --- if the separated file's contents have | |
2519 | changed, we will have caught that when we | |
2520 | visited it in this function's outermost | |
2521 | loop. */ | |
2522 | if (! debug_file | |
2523 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2524 | free_objfile (objfile->separate_debug_objfile); | |
2525 | } | |
2526 | ||
2527 | /* If the new objfile has separate debug info, and we | |
2528 | haven't loaded it already, do so now. */ | |
2529 | if (debug_file | |
2530 | && ! objfile->separate_debug_objfile) | |
2531 | { | |
2532 | /* Use the same section offset table as objfile itself. | |
2533 | Preserve the flags from objfile that make sense. */ | |
2534 | objfile->separate_debug_objfile | |
2535 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2536 | (symfile_bfd_open (debug_file), |
5b5d99cf JB |
2537 | info_verbose, /* from_tty: Don't override the default. */ |
2538 | 0, /* No addr table. */ | |
2539 | objfile->section_offsets, objfile->num_sections, | |
2540 | 0, /* Not mainline. See comments about this above. */ | |
78a4a9b9 | 2541 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2542 | | OBJF_USERLOADED))); |
2543 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2544 | = objfile; | |
2545 | } | |
73780b3c MS |
2546 | if (debug_file) |
2547 | xfree (debug_file); | |
5b5d99cf JB |
2548 | } |
2549 | ||
2550 | ||
c906108c SS |
2551 | \f |
2552 | ||
c5aa993b JM |
2553 | |
2554 | typedef struct | |
2555 | { | |
2556 | char *ext; | |
c906108c | 2557 | enum language lang; |
c5aa993b JM |
2558 | } |
2559 | filename_language; | |
c906108c | 2560 | |
c5aa993b | 2561 | static filename_language *filename_language_table; |
c906108c SS |
2562 | static int fl_table_size, fl_table_next; |
2563 | ||
2564 | static void | |
fba45db2 | 2565 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2566 | { |
2567 | if (fl_table_next >= fl_table_size) | |
2568 | { | |
2569 | fl_table_size += 10; | |
5417f6dc | 2570 | filename_language_table = |
25bf3106 PM |
2571 | xrealloc (filename_language_table, |
2572 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2573 | } |
2574 | ||
4fcf66da | 2575 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2576 | filename_language_table[fl_table_next].lang = lang; |
2577 | fl_table_next++; | |
2578 | } | |
2579 | ||
2580 | static char *ext_args; | |
920d2a44 AC |
2581 | static void |
2582 | show_ext_args (struct ui_file *file, int from_tty, | |
2583 | struct cmd_list_element *c, const char *value) | |
2584 | { | |
2585 | fprintf_filtered (file, _("\ | |
2586 | Mapping between filename extension and source language is \"%s\".\n"), | |
2587 | value); | |
2588 | } | |
c906108c SS |
2589 | |
2590 | static void | |
26c41df3 | 2591 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2592 | { |
2593 | int i; | |
2594 | char *cp = ext_args; | |
2595 | enum language lang; | |
2596 | ||
2597 | /* First arg is filename extension, starting with '.' */ | |
2598 | if (*cp != '.') | |
8a3fe4f8 | 2599 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2600 | |
2601 | /* Find end of first arg. */ | |
c5aa993b | 2602 | while (*cp && !isspace (*cp)) |
c906108c SS |
2603 | cp++; |
2604 | ||
2605 | if (*cp == '\0') | |
8a3fe4f8 | 2606 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2607 | ext_args); |
2608 | ||
2609 | /* Null-terminate first arg */ | |
c5aa993b | 2610 | *cp++ = '\0'; |
c906108c SS |
2611 | |
2612 | /* Find beginning of second arg, which should be a source language. */ | |
2613 | while (*cp && isspace (*cp)) | |
2614 | cp++; | |
2615 | ||
2616 | if (*cp == '\0') | |
8a3fe4f8 | 2617 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2618 | ext_args); |
2619 | ||
2620 | /* Lookup the language from among those we know. */ | |
2621 | lang = language_enum (cp); | |
2622 | ||
2623 | /* Now lookup the filename extension: do we already know it? */ | |
2624 | for (i = 0; i < fl_table_next; i++) | |
2625 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2626 | break; | |
2627 | ||
2628 | if (i >= fl_table_next) | |
2629 | { | |
2630 | /* new file extension */ | |
2631 | add_filename_language (ext_args, lang); | |
2632 | } | |
2633 | else | |
2634 | { | |
2635 | /* redefining a previously known filename extension */ | |
2636 | ||
2637 | /* if (from_tty) */ | |
2638 | /* query ("Really make files of type %s '%s'?", */ | |
2639 | /* ext_args, language_str (lang)); */ | |
2640 | ||
b8c9b27d | 2641 | xfree (filename_language_table[i].ext); |
4fcf66da | 2642 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2643 | filename_language_table[i].lang = lang; |
2644 | } | |
2645 | } | |
2646 | ||
2647 | static void | |
fba45db2 | 2648 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2649 | { |
2650 | int i; | |
2651 | ||
a3f17187 | 2652 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2653 | printf_filtered ("\n\n"); |
2654 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2655 | printf_filtered ("\t%s\t- %s\n", |
2656 | filename_language_table[i].ext, | |
c906108c SS |
2657 | language_str (filename_language_table[i].lang)); |
2658 | } | |
2659 | ||
2660 | static void | |
fba45db2 | 2661 | init_filename_language_table (void) |
c906108c SS |
2662 | { |
2663 | if (fl_table_size == 0) /* protect against repetition */ | |
2664 | { | |
2665 | fl_table_size = 20; | |
2666 | fl_table_next = 0; | |
c5aa993b | 2667 | filename_language_table = |
c906108c | 2668 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2669 | add_filename_language (".c", language_c); |
2670 | add_filename_language (".C", language_cplus); | |
2671 | add_filename_language (".cc", language_cplus); | |
2672 | add_filename_language (".cp", language_cplus); | |
2673 | add_filename_language (".cpp", language_cplus); | |
2674 | add_filename_language (".cxx", language_cplus); | |
2675 | add_filename_language (".c++", language_cplus); | |
2676 | add_filename_language (".java", language_java); | |
c906108c | 2677 | add_filename_language (".class", language_java); |
da2cf7e0 | 2678 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2679 | add_filename_language (".f", language_fortran); |
2680 | add_filename_language (".F", language_fortran); | |
2681 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2682 | add_filename_language (".sx", language_asm); |
c5aa993b | 2683 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2684 | add_filename_language (".pas", language_pascal); |
2685 | add_filename_language (".p", language_pascal); | |
2686 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2687 | add_filename_language (".adb", language_ada); |
2688 | add_filename_language (".ads", language_ada); | |
2689 | add_filename_language (".a", language_ada); | |
2690 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2691 | } |
2692 | } | |
2693 | ||
2694 | enum language | |
fba45db2 | 2695 | deduce_language_from_filename (char *filename) |
c906108c SS |
2696 | { |
2697 | int i; | |
2698 | char *cp; | |
2699 | ||
2700 | if (filename != NULL) | |
2701 | if ((cp = strrchr (filename, '.')) != NULL) | |
2702 | for (i = 0; i < fl_table_next; i++) | |
2703 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2704 | return filename_language_table[i].lang; | |
2705 | ||
2706 | return language_unknown; | |
2707 | } | |
2708 | \f | |
2709 | /* allocate_symtab: | |
2710 | ||
2711 | Allocate and partly initialize a new symbol table. Return a pointer | |
2712 | to it. error() if no space. | |
2713 | ||
2714 | Caller must set these fields: | |
c5aa993b JM |
2715 | LINETABLE(symtab) |
2716 | symtab->blockvector | |
2717 | symtab->dirname | |
2718 | symtab->free_code | |
2719 | symtab->free_ptr | |
2720 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2721 | */ |
2722 | ||
2723 | struct symtab * | |
fba45db2 | 2724 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2725 | { |
52f0bd74 | 2726 | struct symtab *symtab; |
c906108c SS |
2727 | |
2728 | symtab = (struct symtab *) | |
4a146b47 | 2729 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2730 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2731 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2732 | &objfile->objfile_obstack); |
c5aa993b JM |
2733 | symtab->fullname = NULL; |
2734 | symtab->language = deduce_language_from_filename (filename); | |
2735 | symtab->debugformat = obsavestring ("unknown", 7, | |
4a146b47 | 2736 | &objfile->objfile_obstack); |
c906108c SS |
2737 | |
2738 | /* Hook it to the objfile it comes from */ | |
2739 | ||
c5aa993b JM |
2740 | symtab->objfile = objfile; |
2741 | symtab->next = objfile->symtabs; | |
2742 | objfile->symtabs = symtab; | |
c906108c | 2743 | |
c906108c SS |
2744 | return (symtab); |
2745 | } | |
2746 | ||
2747 | struct partial_symtab * | |
fba45db2 | 2748 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2749 | { |
2750 | struct partial_symtab *psymtab; | |
2751 | ||
c5aa993b | 2752 | if (objfile->free_psymtabs) |
c906108c | 2753 | { |
c5aa993b JM |
2754 | psymtab = objfile->free_psymtabs; |
2755 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2756 | } |
2757 | else | |
2758 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2759 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2760 | sizeof (struct partial_symtab)); |
2761 | ||
2762 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2763 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2764 | &objfile->objfile_obstack); |
c5aa993b | 2765 | psymtab->symtab = NULL; |
c906108c SS |
2766 | |
2767 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2768 | Psymtabs are searched in most recent inserted -> least recent | |
2769 | inserted order. */ | |
2770 | ||
c5aa993b JM |
2771 | psymtab->objfile = objfile; |
2772 | psymtab->next = objfile->psymtabs; | |
2773 | objfile->psymtabs = psymtab; | |
c906108c SS |
2774 | #if 0 |
2775 | { | |
2776 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2777 | psymtab->objfile = objfile; |
2778 | psymtab->next = NULL; | |
2779 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2780 | while ((*prev_pst) != NULL) |
c5aa993b | 2781 | prev_pst = &((*prev_pst)->next); |
c906108c | 2782 | (*prev_pst) = psymtab; |
c5aa993b | 2783 | } |
c906108c | 2784 | #endif |
c5aa993b | 2785 | |
c906108c SS |
2786 | return (psymtab); |
2787 | } | |
2788 | ||
2789 | void | |
fba45db2 | 2790 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2791 | { |
2792 | struct partial_symtab **prev_pst; | |
2793 | ||
2794 | /* From dbxread.c: | |
2795 | Empty psymtabs happen as a result of header files which don't | |
2796 | have any symbols in them. There can be a lot of them. But this | |
2797 | check is wrong, in that a psymtab with N_SLINE entries but | |
2798 | nothing else is not empty, but we don't realize that. Fixing | |
2799 | that without slowing things down might be tricky. */ | |
2800 | ||
2801 | /* First, snip it out of the psymtab chain */ | |
2802 | ||
2803 | prev_pst = &(pst->objfile->psymtabs); | |
2804 | while ((*prev_pst) != pst) | |
2805 | prev_pst = &((*prev_pst)->next); | |
2806 | (*prev_pst) = pst->next; | |
2807 | ||
2808 | /* Next, put it on a free list for recycling */ | |
2809 | ||
2810 | pst->next = pst->objfile->free_psymtabs; | |
2811 | pst->objfile->free_psymtabs = pst; | |
2812 | } | |
c906108c | 2813 | \f |
c5aa993b | 2814 | |
c906108c SS |
2815 | /* Reset all data structures in gdb which may contain references to symbol |
2816 | table data. */ | |
2817 | ||
2818 | void | |
fba45db2 | 2819 | clear_symtab_users (void) |
c906108c SS |
2820 | { |
2821 | /* Someday, we should do better than this, by only blowing away | |
2822 | the things that really need to be blown. */ | |
c0501be5 DJ |
2823 | |
2824 | /* Clear the "current" symtab first, because it is no longer valid. | |
2825 | breakpoint_re_set may try to access the current symtab. */ | |
2826 | clear_current_source_symtab_and_line (); | |
2827 | ||
c906108c | 2828 | clear_displays (); |
c906108c SS |
2829 | breakpoint_re_set (); |
2830 | set_default_breakpoint (0, 0, 0, 0); | |
c906108c | 2831 | clear_pc_function_cache (); |
06d3b283 | 2832 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2833 | |
2834 | /* Clear globals which might have pointed into a removed objfile. | |
2835 | FIXME: It's not clear which of these are supposed to persist | |
2836 | between expressions and which ought to be reset each time. */ | |
2837 | expression_context_block = NULL; | |
2838 | innermost_block = NULL; | |
8756216b DP |
2839 | |
2840 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2841 | varobj_invalidate (); | |
2842 | ||
c906108c SS |
2843 | } |
2844 | ||
74b7792f AC |
2845 | static void |
2846 | clear_symtab_users_cleanup (void *ignore) | |
2847 | { | |
2848 | clear_symtab_users (); | |
2849 | } | |
2850 | ||
c906108c SS |
2851 | /* clear_symtab_users_once: |
2852 | ||
2853 | This function is run after symbol reading, or from a cleanup. | |
2854 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2855 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2856 | reference it have not yet been cleared or re-directed. (The old |
2857 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2858 | below.) | |
2859 | ||
2860 | This function can be queued N times as a cleanup, or called | |
2861 | directly; it will do all the work the first time, and then will be a | |
2862 | no-op until the next time it is queued. This works by bumping a | |
2863 | counter at queueing time. Much later when the cleanup is run, or at | |
2864 | the end of symbol processing (in case the cleanup is discarded), if | |
2865 | the queued count is greater than the "done-count", we do the work | |
2866 | and set the done-count to the queued count. If the queued count is | |
2867 | less than or equal to the done-count, we just ignore the call. This | |
2868 | is needed because reading a single .o file will often replace many | |
2869 | symtabs (one per .h file, for example), and we don't want to reset | |
2870 | the breakpoints N times in the user's face. | |
2871 | ||
2872 | The reason we both queue a cleanup, and call it directly after symbol | |
2873 | reading, is because the cleanup protects us in case of errors, but is | |
2874 | discarded if symbol reading is successful. */ | |
2875 | ||
2876 | #if 0 | |
2877 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2878 | is no longer needed. */ | |
a14ed312 | 2879 | static void clear_symtab_users_once (void); |
c906108c SS |
2880 | |
2881 | static int clear_symtab_users_queued; | |
2882 | static int clear_symtab_users_done; | |
2883 | ||
2884 | static void | |
fba45db2 | 2885 | clear_symtab_users_once (void) |
c906108c SS |
2886 | { |
2887 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2888 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2889 | return; | |
2890 | clear_symtab_users_done = clear_symtab_users_queued; | |
2891 | ||
2892 | clear_symtab_users (); | |
2893 | } | |
2894 | #endif | |
2895 | ||
2896 | /* Delete the specified psymtab, and any others that reference it. */ | |
2897 | ||
2898 | static void | |
fba45db2 | 2899 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2900 | { |
2901 | struct partial_symtab *ps, *pprev = NULL; | |
2902 | int i; | |
2903 | ||
2904 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2905 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2906 | { | |
2907 | if (ps == pst) | |
2908 | break; | |
2909 | pprev = ps; | |
2910 | } | |
c906108c | 2911 | |
c5aa993b JM |
2912 | if (ps) |
2913 | { | |
2914 | /* Unhook it from the chain. */ | |
2915 | if (ps == pst->objfile->psymtabs) | |
2916 | pst->objfile->psymtabs = ps->next; | |
2917 | else | |
2918 | pprev->next = ps->next; | |
2919 | ||
2920 | /* FIXME, we can't conveniently deallocate the entries in the | |
2921 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2922 | this psymtab points to. These just take up space until all | |
2923 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2924 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2925 | |
2926 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2927 | again: | |
2928 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2929 | { | |
2930 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2931 | { | |
2932 | if (ps->dependencies[i] == pst) | |
2933 | { | |
2934 | cashier_psymtab (ps); | |
2935 | goto again; /* Must restart, chain has been munged. */ | |
2936 | } | |
2937 | } | |
c906108c | 2938 | } |
c906108c | 2939 | } |
c906108c SS |
2940 | } |
2941 | ||
2942 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2943 | with any dependent breakpoints, displays, etc. | |
2944 | Used when loading new versions of object modules with the "add-file" | |
2945 | command. This is only called on the top-level symtab or psymtab's name; | |
2946 | it is not called for subsidiary files such as .h files. | |
2947 | ||
2948 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2949 | FIXME. The return value appears to never be used. |
c906108c SS |
2950 | |
2951 | FIXME. I think this is not the best way to do this. We should | |
2952 | work on being gentler to the environment while still cleaning up | |
2953 | all stray pointers into the freed symtab. */ | |
2954 | ||
2955 | int | |
fba45db2 | 2956 | free_named_symtabs (char *name) |
c906108c SS |
2957 | { |
2958 | #if 0 | |
2959 | /* FIXME: With the new method of each objfile having it's own | |
2960 | psymtab list, this function needs serious rethinking. In particular, | |
2961 | why was it ever necessary to toss psymtabs with specific compilation | |
2962 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2963 | file? -- fnf | |
2964 | Well, the answer is that some systems permit reloading of particular | |
2965 | compilation units. We want to blow away any old info about these | |
2966 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2967 | ||
52f0bd74 AC |
2968 | struct symtab *s; |
2969 | struct symtab *prev; | |
2970 | struct partial_symtab *ps; | |
c906108c SS |
2971 | struct blockvector *bv; |
2972 | int blewit = 0; | |
2973 | ||
2974 | /* We only wack things if the symbol-reload switch is set. */ | |
2975 | if (!symbol_reloading) | |
2976 | return 0; | |
2977 | ||
2978 | /* Some symbol formats have trouble providing file names... */ | |
2979 | if (name == 0 || *name == '\0') | |
2980 | return 0; | |
2981 | ||
2982 | /* Look for a psymtab with the specified name. */ | |
2983 | ||
2984 | again2: | |
c5aa993b JM |
2985 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2986 | { | |
6314a349 | 2987 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2988 | { |
2989 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2990 | goto again2; /* Must restart, chain has been munged */ | |
2991 | } | |
c906108c | 2992 | } |
c906108c SS |
2993 | |
2994 | /* Look for a symtab with the specified name. */ | |
2995 | ||
2996 | for (s = symtab_list; s; s = s->next) | |
2997 | { | |
6314a349 | 2998 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2999 | break; |
3000 | prev = s; | |
3001 | } | |
3002 | ||
3003 | if (s) | |
3004 | { | |
3005 | if (s == symtab_list) | |
3006 | symtab_list = s->next; | |
3007 | else | |
3008 | prev->next = s->next; | |
3009 | ||
3010 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
3011 | or not they depend on the symtab being freed. This should be |
3012 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
3013 | |
3014 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
3015 | This test is necessary due to a bug in "dbxread.c" that |
3016 | causes empty symtabs to be created for N_SO symbols that | |
3017 | contain the pathname of the object file. (This problem | |
3018 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
3019 | |
3020 | bv = BLOCKVECTOR (s); | |
3021 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
3022 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
3023 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
3024 | { | |
e2e0b3e5 | 3025 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 3026 | name); |
c906108c SS |
3027 | clear_symtab_users_queued++; |
3028 | make_cleanup (clear_symtab_users_once, 0); | |
3029 | blewit = 1; | |
c5aa993b JM |
3030 | } |
3031 | else | |
e2e0b3e5 AC |
3032 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
3033 | name); | |
c906108c SS |
3034 | |
3035 | free_symtab (s); | |
3036 | } | |
3037 | else | |
3038 | { | |
3039 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
3040 | even though no symtab was found, since the file might have |
3041 | been compiled without debugging, and hence not be associated | |
3042 | with a symtab. In order to handle this correctly, we would need | |
3043 | to keep a list of text address ranges for undebuggable files. | |
3044 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
3045 | ; |
3046 | } | |
3047 | ||
3048 | /* FIXME, what about the minimal symbol table? */ | |
3049 | return blewit; | |
3050 | #else | |
3051 | return (0); | |
3052 | #endif | |
3053 | } | |
3054 | \f | |
3055 | /* Allocate and partially fill a partial symtab. It will be | |
3056 | completely filled at the end of the symbol list. | |
3057 | ||
d4f3574e | 3058 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
3059 | |
3060 | struct partial_symtab * | |
fba45db2 KB |
3061 | start_psymtab_common (struct objfile *objfile, |
3062 | struct section_offsets *section_offsets, char *filename, | |
3063 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
3064 | struct partial_symbol **static_syms) | |
c906108c SS |
3065 | { |
3066 | struct partial_symtab *psymtab; | |
3067 | ||
3068 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
3069 | psymtab->section_offsets = section_offsets; |
3070 | psymtab->textlow = textlow; | |
3071 | psymtab->texthigh = psymtab->textlow; /* default */ | |
3072 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
3073 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
3074 | return (psymtab); |
3075 | } | |
3076 | \f | |
2e618c13 AR |
3077 | /* Helper function, initialises partial symbol structure and stashes |
3078 | it into objfile's bcache. Note that our caching mechanism will | |
3079 | use all fields of struct partial_symbol to determine hash value of the | |
3080 | structure. In other words, having two symbols with the same name but | |
3081 | different domain (or address) is possible and correct. */ | |
3082 | ||
11d31d94 | 3083 | static const struct partial_symbol * |
2e618c13 AR |
3084 | add_psymbol_to_bcache (char *name, int namelength, domain_enum domain, |
3085 | enum address_class class, | |
3086 | long val, /* Value as a long */ | |
3087 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
3088 | enum language language, struct objfile *objfile, | |
3089 | int *added) | |
3090 | { | |
3091 | char *buf = name; | |
3092 | /* psymbol is static so that there will be no uninitialized gaps in the | |
3093 | structure which might contain random data, causing cache misses in | |
3094 | bcache. */ | |
3095 | static struct partial_symbol psymbol; | |
3096 | ||
3097 | if (name[namelength] != '\0') | |
3098 | { | |
3099 | buf = alloca (namelength + 1); | |
3100 | /* Create local copy of the partial symbol */ | |
3101 | memcpy (buf, name, namelength); | |
3102 | buf[namelength] = '\0'; | |
3103 | } | |
3104 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
3105 | if (val != 0) | |
3106 | { | |
3107 | SYMBOL_VALUE (&psymbol) = val; | |
3108 | } | |
3109 | else | |
3110 | { | |
3111 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
3112 | } | |
3113 | SYMBOL_SECTION (&psymbol) = 0; | |
3114 | SYMBOL_LANGUAGE (&psymbol) = language; | |
3115 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
3116 | PSYMBOL_CLASS (&psymbol) = class; | |
3117 | ||
3118 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
3119 | ||
3120 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
3121 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
3122 | objfile->psymbol_cache, added); | |
2e618c13 AR |
3123 | } |
3124 | ||
3125 | /* Helper function, adds partial symbol to the given partial symbol | |
3126 | list. */ | |
3127 | ||
3128 | static void | |
3129 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 3130 | const struct partial_symbol *psym, |
2e618c13 AR |
3131 | struct objfile *objfile) |
3132 | { | |
3133 | if (list->next >= list->list + list->size) | |
3134 | extend_psymbol_list (list, objfile); | |
11d31d94 | 3135 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
3136 | OBJSTAT (objfile, n_psyms++); |
3137 | } | |
3138 | ||
c906108c | 3139 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 3140 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
3141 | Return the partial symbol that has been added. */ |
3142 | ||
3143 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
3144 | symbol is so that callers can get access to the symbol's demangled | |
3145 | name, which they don't have any cheap way to determine otherwise. | |
3146 | (Currenly, dwarf2read.c is the only file who uses that information, | |
3147 | though it's possible that other readers might in the future.) | |
3148 | Elena wasn't thrilled about that, and I don't blame her, but we | |
3149 | couldn't come up with a better way to get that information. If | |
3150 | it's needed in other situations, we could consider breaking up | |
3151 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
3152 | cache. */ | |
3153 | ||
3154 | const struct partial_symbol * | |
176620f1 | 3155 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 | 3156 | enum address_class class, |
2e618c13 AR |
3157 | struct psymbol_allocation_list *list, |
3158 | long val, /* Value as a long */ | |
fba45db2 KB |
3159 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
3160 | enum language language, struct objfile *objfile) | |
c906108c | 3161 | { |
11d31d94 | 3162 | const struct partial_symbol *psym; |
2de7ced7 | 3163 | |
2e618c13 | 3164 | int added; |
c906108c SS |
3165 | |
3166 | /* Stash the partial symbol away in the cache */ | |
2e618c13 AR |
3167 | psym = add_psymbol_to_bcache (name, namelength, domain, class, |
3168 | val, coreaddr, language, objfile, &added); | |
c906108c | 3169 | |
2e618c13 AR |
3170 | /* Do not duplicate global partial symbols. */ |
3171 | if (list == &objfile->global_psymbols | |
3172 | && !added) | |
3173 | return psym; | |
5c4e30ca | 3174 | |
2e618c13 AR |
3175 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
3176 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 3177 | return psym; |
c906108c SS |
3178 | } |
3179 | ||
c906108c SS |
3180 | /* Initialize storage for partial symbols. */ |
3181 | ||
3182 | void | |
fba45db2 | 3183 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
3184 | { |
3185 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
3186 | |
3187 | if (objfile->global_psymbols.list) | |
c906108c | 3188 | { |
2dc74dc1 | 3189 | xfree (objfile->global_psymbols.list); |
c906108c | 3190 | } |
c5aa993b | 3191 | if (objfile->static_psymbols.list) |
c906108c | 3192 | { |
2dc74dc1 | 3193 | xfree (objfile->static_psymbols.list); |
c906108c | 3194 | } |
c5aa993b | 3195 | |
c906108c SS |
3196 | /* Current best guess is that approximately a twentieth |
3197 | of the total symbols (in a debugging file) are global or static | |
3198 | oriented symbols */ | |
c906108c | 3199 | |
c5aa993b JM |
3200 | objfile->global_psymbols.size = total_symbols / 10; |
3201 | objfile->static_psymbols.size = total_symbols / 10; | |
3202 | ||
3203 | if (objfile->global_psymbols.size > 0) | |
c906108c | 3204 | { |
c5aa993b JM |
3205 | objfile->global_psymbols.next = |
3206 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3207 | xmalloc ((objfile->global_psymbols.size |
3208 | * sizeof (struct partial_symbol *))); | |
c906108c | 3209 | } |
c5aa993b | 3210 | if (objfile->static_psymbols.size > 0) |
c906108c | 3211 | { |
c5aa993b JM |
3212 | objfile->static_psymbols.next = |
3213 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3214 | xmalloc ((objfile->static_psymbols.size |
3215 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
3216 | } |
3217 | } | |
3218 | ||
3219 | /* OVERLAYS: | |
3220 | The following code implements an abstraction for debugging overlay sections. | |
3221 | ||
3222 | The target model is as follows: | |
3223 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3224 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3225 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3226 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3227 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3228 | sections should be considered to be mapped from the VMA to the LMA. |
3229 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3230 | For instance, if a section has been mapped then its contents |
c5aa993b | 3231 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3232 | |
3233 | Two levels of debugger support for overlays are available. One is | |
3234 | "manual", in which the debugger relies on the user to tell it which | |
3235 | overlays are currently mapped. This level of support is | |
3236 | implemented entirely in the core debugger, and the information about | |
3237 | whether a section is mapped is kept in the objfile->obj_section table. | |
3238 | ||
3239 | The second level of support is "automatic", and is only available if | |
3240 | the target-specific code provides functionality to read the target's | |
3241 | overlay mapping table, and translate its contents for the debugger | |
3242 | (by updating the mapped state information in the obj_section tables). | |
3243 | ||
3244 | The interface is as follows: | |
c5aa993b JM |
3245 | User commands: |
3246 | overlay map <name> -- tell gdb to consider this section mapped | |
3247 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3248 | overlay list -- list the sections that GDB thinks are mapped | |
3249 | overlay read-target -- get the target's state of what's mapped | |
3250 | overlay off/manual/auto -- set overlay debugging state | |
3251 | Functional interface: | |
3252 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3253 | section, return that section. | |
5417f6dc | 3254 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b JM |
3255 | the pc, either in its VMA or its LMA |
3256 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
3257 | section_is_overlay(sect): true if section's VMA != LMA | |
3258 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3259 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3260 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3261 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3262 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3263 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3264 | either in VMA or LMA depending on whether | |
3265 | the symbol's section is currently mapped | |
c906108c SS |
3266 | */ |
3267 | ||
3268 | /* Overlay debugging state: */ | |
3269 | ||
d874f1e2 | 3270 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3271 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3272 | ||
c906108c | 3273 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3274 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3275 | SECTION is loaded at an address different from where it will "run". */ |
3276 | ||
3277 | int | |
fba45db2 | 3278 | section_is_overlay (asection *section) |
c906108c | 3279 | { |
fbd35540 MS |
3280 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3281 | ||
c906108c SS |
3282 | if (overlay_debugging) |
3283 | if (section && section->lma != 0 && | |
3284 | section->vma != section->lma) | |
3285 | return 1; | |
3286 | ||
3287 | return 0; | |
3288 | } | |
3289 | ||
3290 | /* Function: overlay_invalidate_all (void) | |
3291 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3292 | ||
3293 | static void | |
fba45db2 | 3294 | overlay_invalidate_all (void) |
c906108c | 3295 | { |
c5aa993b | 3296 | struct objfile *objfile; |
c906108c SS |
3297 | struct obj_section *sect; |
3298 | ||
3299 | ALL_OBJSECTIONS (objfile, sect) | |
3300 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 3301 | sect->ovly_mapped = -1; |
c906108c SS |
3302 | } |
3303 | ||
3304 | /* Function: overlay_is_mapped (SECTION) | |
5417f6dc | 3305 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3306 | Private: public access is thru function section_is_mapped. |
3307 | ||
3308 | Access to the ovly_mapped flag is restricted to this function, so | |
3309 | that we can do automatic update. If the global flag | |
3310 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3311 | overlay_invalidate_all. If the mapped state of the particular | |
3312 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3313 | ||
c5aa993b | 3314 | static int |
fba45db2 | 3315 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
3316 | { |
3317 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
3318 | return 0; | |
3319 | ||
c5aa993b | 3320 | switch (overlay_debugging) |
c906108c SS |
3321 | { |
3322 | default: | |
d874f1e2 | 3323 | case ovly_off: |
c5aa993b | 3324 | return 0; /* overlay debugging off */ |
d874f1e2 | 3325 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3326 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3327 | there's really nothing useful to do here (can't really go auto) */ |
1c772458 | 3328 | if (gdbarch_overlay_update_p (current_gdbarch)) |
c906108c SS |
3329 | { |
3330 | if (overlay_cache_invalid) | |
3331 | { | |
3332 | overlay_invalidate_all (); | |
3333 | overlay_cache_invalid = 0; | |
3334 | } | |
3335 | if (osect->ovly_mapped == -1) | |
1c772458 | 3336 | gdbarch_overlay_update (current_gdbarch, osect); |
c906108c SS |
3337 | } |
3338 | /* fall thru to manual case */ | |
d874f1e2 | 3339 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3340 | return osect->ovly_mapped == 1; |
3341 | } | |
3342 | } | |
3343 | ||
3344 | /* Function: section_is_mapped | |
3345 | Returns true if section is an overlay, and is currently mapped. */ | |
3346 | ||
3347 | int | |
fba45db2 | 3348 | section_is_mapped (asection *section) |
c906108c | 3349 | { |
c5aa993b | 3350 | struct objfile *objfile; |
c906108c SS |
3351 | struct obj_section *osect; |
3352 | ||
3353 | if (overlay_debugging) | |
3354 | if (section && section_is_overlay (section)) | |
3355 | ALL_OBJSECTIONS (objfile, osect) | |
3356 | if (osect->the_bfd_section == section) | |
c5aa993b | 3357 | return overlay_is_mapped (osect); |
c906108c SS |
3358 | |
3359 | return 0; | |
3360 | } | |
3361 | ||
3362 | /* Function: pc_in_unmapped_range | |
3363 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3364 | ||
3365 | CORE_ADDR | |
fba45db2 | 3366 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3367 | { |
fbd35540 MS |
3368 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3369 | ||
c906108c SS |
3370 | int size; |
3371 | ||
3372 | if (overlay_debugging) | |
3373 | if (section && section_is_overlay (section)) | |
3374 | { | |
2c500098 | 3375 | size = bfd_get_section_size (section); |
c906108c SS |
3376 | if (section->lma <= pc && pc < section->lma + size) |
3377 | return 1; | |
3378 | } | |
3379 | return 0; | |
3380 | } | |
3381 | ||
3382 | /* Function: pc_in_mapped_range | |
3383 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3384 | ||
3385 | CORE_ADDR | |
fba45db2 | 3386 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3387 | { |
fbd35540 MS |
3388 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3389 | ||
c906108c SS |
3390 | int size; |
3391 | ||
3392 | if (overlay_debugging) | |
3393 | if (section && section_is_overlay (section)) | |
3394 | { | |
2c500098 | 3395 | size = bfd_get_section_size (section); |
c906108c SS |
3396 | if (section->vma <= pc && pc < section->vma + size) |
3397 | return 1; | |
3398 | } | |
3399 | return 0; | |
3400 | } | |
3401 | ||
9ec8e6a0 JB |
3402 | |
3403 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3404 | otherwise. */ | |
b9362cc7 | 3405 | static int |
9ec8e6a0 JB |
3406 | sections_overlap (asection *a, asection *b) |
3407 | { | |
fbd35540 MS |
3408 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3409 | ||
9ec8e6a0 | 3410 | CORE_ADDR a_start = a->vma; |
2c500098 | 3411 | CORE_ADDR a_end = a->vma + bfd_get_section_size (a); |
9ec8e6a0 | 3412 | CORE_ADDR b_start = b->vma; |
2c500098 | 3413 | CORE_ADDR b_end = b->vma + bfd_get_section_size (b); |
9ec8e6a0 JB |
3414 | |
3415 | return (a_start < b_end && b_start < a_end); | |
3416 | } | |
3417 | ||
c906108c SS |
3418 | /* Function: overlay_unmapped_address (PC, SECTION) |
3419 | Returns the address corresponding to PC in the unmapped (load) range. | |
3420 | May be the same as PC. */ | |
3421 | ||
3422 | CORE_ADDR | |
fba45db2 | 3423 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3424 | { |
fbd35540 MS |
3425 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3426 | ||
c906108c SS |
3427 | if (overlay_debugging) |
3428 | if (section && section_is_overlay (section) && | |
3429 | pc_in_mapped_range (pc, section)) | |
3430 | return pc + section->lma - section->vma; | |
3431 | ||
3432 | return pc; | |
3433 | } | |
3434 | ||
3435 | /* Function: overlay_mapped_address (PC, SECTION) | |
3436 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3437 | May be the same as PC. */ | |
3438 | ||
3439 | CORE_ADDR | |
fba45db2 | 3440 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3441 | { |
fbd35540 MS |
3442 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3443 | ||
c906108c SS |
3444 | if (overlay_debugging) |
3445 | if (section && section_is_overlay (section) && | |
3446 | pc_in_unmapped_range (pc, section)) | |
3447 | return pc + section->vma - section->lma; | |
3448 | ||
3449 | return pc; | |
3450 | } | |
3451 | ||
3452 | ||
5417f6dc | 3453 | /* Function: symbol_overlayed_address |
c906108c SS |
3454 | Return one of two addresses (relative to the VMA or to the LMA), |
3455 | depending on whether the section is mapped or not. */ | |
3456 | ||
c5aa993b | 3457 | CORE_ADDR |
fba45db2 | 3458 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3459 | { |
3460 | if (overlay_debugging) | |
3461 | { | |
3462 | /* If the symbol has no section, just return its regular address. */ | |
3463 | if (section == 0) | |
3464 | return address; | |
3465 | /* If the symbol's section is not an overlay, just return its address */ | |
3466 | if (!section_is_overlay (section)) | |
3467 | return address; | |
3468 | /* If the symbol's section is mapped, just return its address */ | |
3469 | if (section_is_mapped (section)) | |
3470 | return address; | |
3471 | /* | |
3472 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3473 | * then return its LOADED address rather than its vma address!! | |
3474 | */ | |
3475 | return overlay_unmapped_address (address, section); | |
3476 | } | |
3477 | return address; | |
3478 | } | |
3479 | ||
5417f6dc | 3480 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3481 | Return the best-match overlay section for PC: |
3482 | If PC matches a mapped overlay section's VMA, return that section. | |
3483 | Else if PC matches an unmapped section's VMA, return that section. | |
3484 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3485 | ||
3486 | asection * | |
fba45db2 | 3487 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3488 | { |
c5aa993b | 3489 | struct objfile *objfile; |
c906108c SS |
3490 | struct obj_section *osect, *best_match = NULL; |
3491 | ||
3492 | if (overlay_debugging) | |
3493 | ALL_OBJSECTIONS (objfile, osect) | |
3494 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3495 | { |
3496 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3497 | { | |
3498 | if (overlay_is_mapped (osect)) | |
3499 | return osect->the_bfd_section; | |
3500 | else | |
3501 | best_match = osect; | |
3502 | } | |
3503 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3504 | best_match = osect; | |
3505 | } | |
c906108c SS |
3506 | return best_match ? best_match->the_bfd_section : NULL; |
3507 | } | |
3508 | ||
3509 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3510 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3511 | currently marked as MAPPED, return that section. Else return NULL. */ |
3512 | ||
3513 | asection * | |
fba45db2 | 3514 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3515 | { |
c5aa993b | 3516 | struct objfile *objfile; |
c906108c SS |
3517 | struct obj_section *osect; |
3518 | ||
3519 | if (overlay_debugging) | |
3520 | ALL_OBJSECTIONS (objfile, osect) | |
3521 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3522 | overlay_is_mapped (osect)) | |
c5aa993b | 3523 | return osect->the_bfd_section; |
c906108c SS |
3524 | |
3525 | return NULL; | |
3526 | } | |
3527 | ||
3528 | /* Function: list_overlays_command | |
3529 | Print a list of mapped sections and their PC ranges */ | |
3530 | ||
3531 | void | |
fba45db2 | 3532 | list_overlays_command (char *args, int from_tty) |
c906108c | 3533 | { |
c5aa993b JM |
3534 | int nmapped = 0; |
3535 | struct objfile *objfile; | |
c906108c SS |
3536 | struct obj_section *osect; |
3537 | ||
3538 | if (overlay_debugging) | |
3539 | ALL_OBJSECTIONS (objfile, osect) | |
3540 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3541 | { |
3542 | const char *name; | |
3543 | bfd_vma lma, vma; | |
3544 | int size; | |
3545 | ||
3546 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3547 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3548 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3549 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3550 | ||
3551 | printf_filtered ("Section %s, loaded at ", name); | |
ed49a04f | 3552 | fputs_filtered (paddress (lma), gdb_stdout); |
c5aa993b | 3553 | puts_filtered (" - "); |
ed49a04f | 3554 | fputs_filtered (paddress (lma + size), gdb_stdout); |
c5aa993b | 3555 | printf_filtered (", mapped at "); |
ed49a04f | 3556 | fputs_filtered (paddress (vma), gdb_stdout); |
c5aa993b | 3557 | puts_filtered (" - "); |
ed49a04f | 3558 | fputs_filtered (paddress (vma + size), gdb_stdout); |
c5aa993b JM |
3559 | puts_filtered ("\n"); |
3560 | ||
3561 | nmapped++; | |
3562 | } | |
c906108c | 3563 | if (nmapped == 0) |
a3f17187 | 3564 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3565 | } |
3566 | ||
3567 | /* Function: map_overlay_command | |
3568 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3569 | ||
3570 | void | |
fba45db2 | 3571 | map_overlay_command (char *args, int from_tty) |
c906108c | 3572 | { |
c5aa993b JM |
3573 | struct objfile *objfile, *objfile2; |
3574 | struct obj_section *sec, *sec2; | |
3575 | asection *bfdsec; | |
c906108c SS |
3576 | |
3577 | if (!overlay_debugging) | |
8a3fe4f8 | 3578 | error (_("\ |
515ad16c | 3579 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3580 | the 'overlay manual' command.")); |
c906108c SS |
3581 | |
3582 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3583 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3584 | |
3585 | /* First, find a section matching the user supplied argument */ | |
3586 | ALL_OBJSECTIONS (objfile, sec) | |
3587 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3588 | { |
3589 | /* Now, check to see if the section is an overlay. */ | |
3590 | bfdsec = sec->the_bfd_section; | |
3591 | if (!section_is_overlay (bfdsec)) | |
3592 | continue; /* not an overlay section */ | |
3593 | ||
3594 | /* Mark the overlay as "mapped" */ | |
3595 | sec->ovly_mapped = 1; | |
3596 | ||
3597 | /* Next, make a pass and unmap any sections that are | |
3598 | overlapped by this new section: */ | |
3599 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3600 | if (sec2->ovly_mapped |
3601 | && sec != sec2 | |
3602 | && sec->the_bfd_section != sec2->the_bfd_section | |
3603 | && sections_overlap (sec->the_bfd_section, | |
3604 | sec2->the_bfd_section)) | |
c5aa993b JM |
3605 | { |
3606 | if (info_verbose) | |
a3f17187 | 3607 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3608 | bfd_section_name (objfile->obfd, |
3609 | sec2->the_bfd_section)); | |
3610 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3611 | } | |
3612 | return; | |
3613 | } | |
8a3fe4f8 | 3614 | error (_("No overlay section called %s"), args); |
c906108c SS |
3615 | } |
3616 | ||
3617 | /* Function: unmap_overlay_command | |
5417f6dc | 3618 | Mark the overlay section as unmapped |
c906108c SS |
3619 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3620 | ||
3621 | void | |
fba45db2 | 3622 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3623 | { |
c5aa993b | 3624 | struct objfile *objfile; |
c906108c SS |
3625 | struct obj_section *sec; |
3626 | ||
3627 | if (!overlay_debugging) | |
8a3fe4f8 | 3628 | error (_("\ |
515ad16c | 3629 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3630 | the 'overlay manual' command.")); |
c906108c SS |
3631 | |
3632 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3633 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3634 | |
3635 | /* First, find a section matching the user supplied argument */ | |
3636 | ALL_OBJSECTIONS (objfile, sec) | |
3637 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3638 | { |
3639 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3640 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3641 | sec->ovly_mapped = 0; |
3642 | return; | |
3643 | } | |
8a3fe4f8 | 3644 | error (_("No overlay section called %s"), args); |
c906108c SS |
3645 | } |
3646 | ||
3647 | /* Function: overlay_auto_command | |
3648 | A utility command to turn on overlay debugging. | |
3649 | Possibly this should be done via a set/show command. */ | |
3650 | ||
3651 | static void | |
fba45db2 | 3652 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3653 | { |
d874f1e2 | 3654 | overlay_debugging = ovly_auto; |
1900040c | 3655 | enable_overlay_breakpoints (); |
c906108c | 3656 | if (info_verbose) |
a3f17187 | 3657 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3658 | } |
3659 | ||
3660 | /* Function: overlay_manual_command | |
3661 | A utility command to turn on overlay debugging. | |
3662 | Possibly this should be done via a set/show command. */ | |
3663 | ||
3664 | static void | |
fba45db2 | 3665 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3666 | { |
d874f1e2 | 3667 | overlay_debugging = ovly_on; |
1900040c | 3668 | disable_overlay_breakpoints (); |
c906108c | 3669 | if (info_verbose) |
a3f17187 | 3670 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3671 | } |
3672 | ||
3673 | /* Function: overlay_off_command | |
3674 | A utility command to turn on overlay debugging. | |
3675 | Possibly this should be done via a set/show command. */ | |
3676 | ||
3677 | static void | |
fba45db2 | 3678 | overlay_off_command (char *args, int from_tty) |
c906108c | 3679 | { |
d874f1e2 | 3680 | overlay_debugging = ovly_off; |
1900040c | 3681 | disable_overlay_breakpoints (); |
c906108c | 3682 | if (info_verbose) |
a3f17187 | 3683 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3684 | } |
3685 | ||
3686 | static void | |
fba45db2 | 3687 | overlay_load_command (char *args, int from_tty) |
c906108c | 3688 | { |
1c772458 UW |
3689 | if (gdbarch_overlay_update_p (current_gdbarch)) |
3690 | gdbarch_overlay_update (current_gdbarch, NULL); | |
c906108c | 3691 | else |
8a3fe4f8 | 3692 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3693 | } |
3694 | ||
3695 | /* Function: overlay_command | |
3696 | A place-holder for a mis-typed command */ | |
3697 | ||
3698 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3699 | struct cmd_list_element *overlaylist; | |
3700 | ||
3701 | static void | |
fba45db2 | 3702 | overlay_command (char *args, int from_tty) |
c906108c | 3703 | { |
c5aa993b | 3704 | printf_unfiltered |
c906108c SS |
3705 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3706 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3707 | } | |
3708 | ||
3709 | ||
3710 | /* Target Overlays for the "Simplest" overlay manager: | |
3711 | ||
5417f6dc RM |
3712 | This is GDB's default target overlay layer. It works with the |
3713 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3714 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3715 | so targets that use a different runtime overlay manager can |
c906108c SS |
3716 | substitute their own overlay_update function and take over the |
3717 | function pointer. | |
3718 | ||
3719 | The overlay_update function pokes around in the target's data structures | |
3720 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3721 | this information. | |
3722 | ||
3723 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3724 | unsigned _novlys; /# number of overlay sections #/ |
3725 | unsigned _ovly_table[_novlys][4] = { | |
3726 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3727 | {..., ..., ..., ...}, | |
3728 | } | |
3729 | unsigned _novly_regions; /# number of overlay regions #/ | |
3730 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3731 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3732 | {..., ..., ...}, | |
3733 | } | |
c906108c SS |
3734 | These functions will attempt to update GDB's mappedness state in the |
3735 | symbol section table, based on the target's mappedness state. | |
3736 | ||
3737 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3738 | attempt to detect when the cached copy is invalidated. The main | |
3739 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3740 | the cached table and re-reads only the entry for that section from | |
3741 | the target (whenever possible). | |
3742 | */ | |
3743 | ||
3744 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3745 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3746 | #if 0 |
c5aa993b | 3747 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3748 | #endif |
c5aa993b | 3749 | static unsigned cache_novlys = 0; |
c906108c | 3750 | #if 0 |
c5aa993b | 3751 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3752 | #endif |
3753 | static CORE_ADDR cache_ovly_table_base = 0; | |
3754 | #if 0 | |
3755 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3756 | #endif | |
c5aa993b JM |
3757 | enum ovly_index |
3758 | { | |
3759 | VMA, SIZE, LMA, MAPPED | |
3760 | }; | |
9a76efb6 UW |
3761 | #define TARGET_LONG_BYTES (gdbarch_long_bit (current_gdbarch) \ |
3762 | / TARGET_CHAR_BIT) | |
c906108c SS |
3763 | |
3764 | /* Throw away the cached copy of _ovly_table */ | |
3765 | static void | |
fba45db2 | 3766 | simple_free_overlay_table (void) |
c906108c SS |
3767 | { |
3768 | if (cache_ovly_table) | |
b8c9b27d | 3769 | xfree (cache_ovly_table); |
c5aa993b | 3770 | cache_novlys = 0; |
c906108c SS |
3771 | cache_ovly_table = NULL; |
3772 | cache_ovly_table_base = 0; | |
3773 | } | |
3774 | ||
3775 | #if 0 | |
3776 | /* Throw away the cached copy of _ovly_region_table */ | |
3777 | static void | |
fba45db2 | 3778 | simple_free_overlay_region_table (void) |
c906108c SS |
3779 | { |
3780 | if (cache_ovly_region_table) | |
b8c9b27d | 3781 | xfree (cache_ovly_region_table); |
c5aa993b | 3782 | cache_novly_regions = 0; |
c906108c SS |
3783 | cache_ovly_region_table = NULL; |
3784 | cache_ovly_region_table_base = 0; | |
3785 | } | |
3786 | #endif | |
3787 | ||
3788 | /* Read an array of ints from the target into a local buffer. | |
3789 | Convert to host order. int LEN is number of ints */ | |
3790 | static void | |
fba45db2 | 3791 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3792 | { |
34c0bd93 | 3793 | /* FIXME (alloca): Not safe if array is very large. */ |
777ea8f1 | 3794 | gdb_byte *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3795 | int i; |
c906108c SS |
3796 | |
3797 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3798 | for (i = 0; i < len; i++) | |
c5aa993b | 3799 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3800 | TARGET_LONG_BYTES); |
3801 | } | |
3802 | ||
3803 | /* Find and grab a copy of the target _ovly_table | |
3804 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3805 | static int |
fba45db2 | 3806 | simple_read_overlay_table (void) |
c906108c | 3807 | { |
0d43edd1 | 3808 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3809 | |
3810 | simple_free_overlay_table (); | |
9b27852e | 3811 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3812 | if (! novlys_msym) |
c906108c | 3813 | { |
8a3fe4f8 | 3814 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3815 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3816 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3817 | return 0; |
c906108c | 3818 | } |
0d43edd1 | 3819 | |
9b27852e | 3820 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3821 | if (! ovly_table_msym) |
3822 | { | |
8a3fe4f8 | 3823 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3824 | "`_ovly_table' array\n" |
8a3fe4f8 | 3825 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3826 | return 0; |
3827 | } | |
3828 | ||
3829 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3830 | cache_ovly_table | |
3831 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3832 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3833 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3834 | (unsigned int *) cache_ovly_table, |
0d43edd1 JB |
3835 | cache_novlys * 4); |
3836 | ||
c5aa993b | 3837 | return 1; /* SUCCESS */ |
c906108c SS |
3838 | } |
3839 | ||
3840 | #if 0 | |
3841 | /* Find and grab a copy of the target _ovly_region_table | |
3842 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3843 | static int |
fba45db2 | 3844 | simple_read_overlay_region_table (void) |
c906108c SS |
3845 | { |
3846 | struct minimal_symbol *msym; | |
3847 | ||
3848 | simple_free_overlay_region_table (); | |
9b27852e | 3849 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3850 | if (msym != NULL) |
3851 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3852 | else |
3853 | return 0; /* failure */ | |
c906108c SS |
3854 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3855 | if (cache_ovly_region_table != NULL) | |
3856 | { | |
9b27852e | 3857 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3858 | if (msym != NULL) |
3859 | { | |
3860 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3861 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3862 | (unsigned int *) cache_ovly_region_table, |
c906108c SS |
3863 | cache_novly_regions * 3); |
3864 | } | |
c5aa993b JM |
3865 | else |
3866 | return 0; /* failure */ | |
c906108c | 3867 | } |
c5aa993b JM |
3868 | else |
3869 | return 0; /* failure */ | |
3870 | return 1; /* SUCCESS */ | |
c906108c SS |
3871 | } |
3872 | #endif | |
3873 | ||
5417f6dc | 3874 | /* Function: simple_overlay_update_1 |
c906108c SS |
3875 | A helper function for simple_overlay_update. Assuming a cached copy |
3876 | of _ovly_table exists, look through it to find an entry whose vma, | |
3877 | lma and size match those of OSECT. Re-read the entry and make sure | |
3878 | it still matches OSECT (else the table may no longer be valid). | |
3879 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3880 | success, 0 for failure. */ | |
3881 | ||
3882 | static int | |
fba45db2 | 3883 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3884 | { |
3885 | int i, size; | |
fbd35540 MS |
3886 | bfd *obfd = osect->objfile->obfd; |
3887 | asection *bsect = osect->the_bfd_section; | |
c906108c | 3888 | |
2c500098 | 3889 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3890 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3891 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3892 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3893 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3894 | { |
3895 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
777ea8f1 | 3896 | (unsigned int *) cache_ovly_table[i], 4); |
fbd35540 MS |
3897 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3898 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3899 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3900 | { |
3901 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3902 | return 1; | |
3903 | } | |
fbd35540 | 3904 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3905 | return 0; |
3906 | } | |
3907 | return 0; | |
3908 | } | |
3909 | ||
3910 | /* Function: simple_overlay_update | |
5417f6dc RM |
3911 | If OSECT is NULL, then update all sections' mapped state |
3912 | (after re-reading the entire target _ovly_table). | |
3913 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3914 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3915 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3916 | re-read the entire cache, and go ahead and update all sections. */ |
3917 | ||
1c772458 | 3918 | void |
fba45db2 | 3919 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3920 | { |
c5aa993b | 3921 | struct objfile *objfile; |
c906108c SS |
3922 | |
3923 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3924 | if (osect) | |
3925 | /* Have we got a cached copy of the target's overlay table? */ | |
3926 | if (cache_ovly_table != NULL) | |
3927 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3928 | if (cache_ovly_table_base == |
9b27852e | 3929 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3930 | /* Then go ahead and try to look up this single section in the cache */ |
3931 | if (simple_overlay_update_1 (osect)) | |
3932 | /* Found it! We're done. */ | |
3933 | return; | |
3934 | ||
3935 | /* Cached table no good: need to read the entire table anew. | |
3936 | Or else we want all the sections, in which case it's actually | |
3937 | more efficient to read the whole table in one block anyway. */ | |
3938 | ||
0d43edd1 JB |
3939 | if (! simple_read_overlay_table ()) |
3940 | return; | |
3941 | ||
c906108c SS |
3942 | /* Now may as well update all sections, even if only one was requested. */ |
3943 | ALL_OBJSECTIONS (objfile, osect) | |
3944 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3945 | { |
3946 | int i, size; | |
fbd35540 MS |
3947 | bfd *obfd = osect->objfile->obfd; |
3948 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3949 | |
2c500098 | 3950 | size = bfd_get_section_size (bsect); |
c5aa993b | 3951 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3952 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3953 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3954 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3955 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3956 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3957 | break; /* finished with inner for loop: break out */ | |
3958 | } | |
3959 | } | |
c906108c SS |
3960 | } |
3961 | ||
086df311 DJ |
3962 | /* Set the output sections and output offsets for section SECTP in |
3963 | ABFD. The relocation code in BFD will read these offsets, so we | |
3964 | need to be sure they're initialized. We map each section to itself, | |
3965 | with no offset; this means that SECTP->vma will be honored. */ | |
3966 | ||
3967 | static void | |
3968 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3969 | { | |
3970 | sectp->output_section = sectp; | |
3971 | sectp->output_offset = 0; | |
3972 | } | |
3973 | ||
3974 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3975 | contents are stored in BUF if it is non-NULL, or returned in a | |
3976 | malloc'd buffer otherwise. | |
3977 | ||
3978 | For some platforms and debug info formats, shared libraries contain | |
3979 | relocations against the debug sections (particularly for DWARF-2; | |
3980 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3981 | the version of the linker in use). Also, ELF object files naturally | |
3982 | have unresolved relocations for their debug sections. We need to apply | |
3983 | the relocations in order to get the locations of symbols correct. */ | |
3984 | ||
3985 | bfd_byte * | |
3986 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3987 | { | |
3988 | /* We're only interested in debugging sections with relocation | |
3989 | information. */ | |
3990 | if ((sectp->flags & SEC_RELOC) == 0) | |
3991 | return NULL; | |
3992 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3993 | return NULL; | |
3994 | ||
3995 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3996 | all sections begin at 0. */ | |
3997 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3998 | ||
97606a13 | 3999 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 4000 | } |
c906108c | 4001 | |
31d99776 DJ |
4002 | struct symfile_segment_data * |
4003 | get_symfile_segment_data (bfd *abfd) | |
4004 | { | |
4005 | struct sym_fns *sf = find_sym_fns (abfd); | |
4006 | ||
4007 | if (sf == NULL) | |
4008 | return NULL; | |
4009 | ||
4010 | return sf->sym_segments (abfd); | |
4011 | } | |
4012 | ||
4013 | void | |
4014 | free_symfile_segment_data (struct symfile_segment_data *data) | |
4015 | { | |
4016 | xfree (data->segment_bases); | |
4017 | xfree (data->segment_sizes); | |
4018 | xfree (data->segment_info); | |
4019 | xfree (data); | |
4020 | } | |
4021 | ||
28c32713 JB |
4022 | |
4023 | /* Given: | |
4024 | - DATA, containing segment addresses from the object file ABFD, and | |
4025 | the mapping from ABFD's sections onto the segments that own them, | |
4026 | and | |
4027 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
4028 | segment addresses reported by the target, | |
4029 | store the appropriate offsets for each section in OFFSETS. | |
4030 | ||
4031 | If there are fewer entries in SEGMENT_BASES than there are segments | |
4032 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
4033 | ||
8d385431 DJ |
4034 | If there are more entries, then ignore the extra. The target may |
4035 | not be able to distinguish between an empty data segment and a | |
4036 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
4037 | int |
4038 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
4039 | struct section_offsets *offsets, | |
4040 | int num_segment_bases, | |
4041 | const CORE_ADDR *segment_bases) | |
4042 | { | |
4043 | int i; | |
4044 | asection *sect; | |
4045 | ||
28c32713 JB |
4046 | /* It doesn't make sense to call this function unless you have some |
4047 | segment base addresses. */ | |
4048 | gdb_assert (segment_bases > 0); | |
4049 | ||
31d99776 DJ |
4050 | /* If we do not have segment mappings for the object file, we |
4051 | can not relocate it by segments. */ | |
4052 | gdb_assert (data != NULL); | |
4053 | gdb_assert (data->num_segments > 0); | |
4054 | ||
31d99776 DJ |
4055 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
4056 | { | |
31d99776 DJ |
4057 | int which = data->segment_info[i]; |
4058 | ||
28c32713 JB |
4059 | gdb_assert (0 <= which && which <= data->num_segments); |
4060 | ||
4061 | /* Don't bother computing offsets for sections that aren't | |
4062 | loaded as part of any segment. */ | |
4063 | if (! which) | |
4064 | continue; | |
4065 | ||
4066 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
4067 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 4068 | if (which > num_segment_bases) |
28c32713 | 4069 | which = num_segment_bases; |
31d99776 | 4070 | |
28c32713 JB |
4071 | offsets->offsets[i] = (segment_bases[which - 1] |
4072 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
4073 | } |
4074 | ||
4075 | return 1; | |
4076 | } | |
4077 | ||
4078 | static void | |
4079 | symfile_find_segment_sections (struct objfile *objfile) | |
4080 | { | |
4081 | bfd *abfd = objfile->obfd; | |
4082 | int i; | |
4083 | asection *sect; | |
4084 | struct symfile_segment_data *data; | |
4085 | ||
4086 | data = get_symfile_segment_data (objfile->obfd); | |
4087 | if (data == NULL) | |
4088 | return; | |
4089 | ||
4090 | if (data->num_segments != 1 && data->num_segments != 2) | |
4091 | { | |
4092 | free_symfile_segment_data (data); | |
4093 | return; | |
4094 | } | |
4095 | ||
4096 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
4097 | { | |
4098 | CORE_ADDR vma; | |
4099 | int which = data->segment_info[i]; | |
4100 | ||
4101 | if (which == 1) | |
4102 | { | |
4103 | if (objfile->sect_index_text == -1) | |
4104 | objfile->sect_index_text = sect->index; | |
4105 | ||
4106 | if (objfile->sect_index_rodata == -1) | |
4107 | objfile->sect_index_rodata = sect->index; | |
4108 | } | |
4109 | else if (which == 2) | |
4110 | { | |
4111 | if (objfile->sect_index_data == -1) | |
4112 | objfile->sect_index_data = sect->index; | |
4113 | ||
4114 | if (objfile->sect_index_bss == -1) | |
4115 | objfile->sect_index_bss = sect->index; | |
4116 | } | |
4117 | } | |
4118 | ||
4119 | free_symfile_segment_data (data); | |
4120 | } | |
4121 | ||
c906108c | 4122 | void |
fba45db2 | 4123 | _initialize_symfile (void) |
c906108c SS |
4124 | { |
4125 | struct cmd_list_element *c; | |
c5aa993b | 4126 | |
1a966eab AC |
4127 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
4128 | Load symbol table from executable file FILE.\n\ | |
c906108c | 4129 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 4130 | to execute."), &cmdlist); |
5ba2abeb | 4131 | set_cmd_completer (c, filename_completer); |
c906108c | 4132 | |
1a966eab | 4133 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 4134 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 4135 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 4136 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
4137 | The optional arguments are section-name section-address pairs and\n\ |
4138 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 4139 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 4140 | &cmdlist); |
5ba2abeb | 4141 | set_cmd_completer (c, filename_completer); |
c906108c SS |
4142 | |
4143 | c = add_cmd ("add-shared-symbol-files", class_files, | |
1a966eab AC |
4144 | add_shared_symbol_files_command, _("\ |
4145 | Load the symbols from shared objects in the dynamic linker's link map."), | |
c5aa993b | 4146 | &cmdlist); |
c906108c SS |
4147 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
4148 | &cmdlist); | |
4149 | ||
1a966eab AC |
4150 | c = add_cmd ("load", class_files, load_command, _("\ |
4151 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
4152 | for access from GDB.\n\ |
4153 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 4154 | set_cmd_completer (c, filename_completer); |
c906108c | 4155 | |
5bf193a2 AC |
4156 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
4157 | &symbol_reloading, _("\ | |
4158 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
4159 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
4160 | NULL, | |
920d2a44 | 4161 | show_symbol_reloading, |
5bf193a2 | 4162 | &setlist, &showlist); |
c906108c | 4163 | |
c5aa993b | 4164 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 4165 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
4166 | "overlay ", 0, &cmdlist); |
4167 | ||
4168 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
4169 | add_com_alias ("ov", "overlay", class_alias, 1); | |
4170 | ||
c5aa993b | 4171 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 4172 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 4173 | |
c5aa993b | 4174 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4175 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4176 | |
c5aa993b | 4177 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4178 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4179 | |
c5aa993b | 4180 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4181 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4182 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4183 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4184 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4185 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4186 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4187 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4188 | |
4189 | /* Filename extension to source language lookup table: */ | |
4190 | init_filename_language_table (); | |
26c41df3 AC |
4191 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4192 | &ext_args, _("\ | |
4193 | Set mapping between filename extension and source language."), _("\ | |
4194 | Show mapping between filename extension and source language."), _("\ | |
4195 | Usage: set extension-language .foo bar"), | |
4196 | set_ext_lang_command, | |
920d2a44 | 4197 | show_ext_args, |
26c41df3 | 4198 | &setlist, &showlist); |
c906108c | 4199 | |
c5aa993b | 4200 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4201 | _("All filename extensions associated with a source language.")); |
917317f4 | 4202 | |
525226b5 AC |
4203 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4204 | &debug_file_directory, _("\ | |
4205 | Set the directory where separate debug symbols are searched for."), _("\ | |
4206 | Show the directory where separate debug symbols are searched for."), _("\ | |
4207 | Separate debug symbols are first searched for in the same\n\ | |
4208 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4209 | and lastly at the path of the directory of the binary with\n\ | |
4210 | the global debug-file directory prepended."), | |
4211 | NULL, | |
920d2a44 | 4212 | show_debug_file_directory, |
525226b5 | 4213 | &setlist, &showlist); |
bf250677 DE |
4214 | |
4215 | add_setshow_boolean_cmd ("symbol-loading", no_class, | |
4216 | &print_symbol_loading, _("\ | |
4217 | Set printing of symbol loading messages."), _("\ | |
4218 | Show printing of symbol loading messages."), NULL, | |
4219 | NULL, | |
4220 | NULL, | |
4221 | &setprintlist, &showprintlist); | |
c906108c | 4222 | } |