Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1990-2020 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
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" |
e0eac551 | 47 | #include "readline/tilde.h" |
fe898f56 | 48 | #include "block.h" |
76727919 | 49 | #include "observable.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
268a13a5 TT |
59 | #include "gdbsupport/byte-vector.h" |
60 | #include "gdbsupport/pathstuff.h" | |
61 | #include "gdbsupport/selftest.h" | |
47fd17cd | 62 | #include "cli/cli-style.h" |
268a13a5 | 63 | #include "gdbsupport/forward-scope-exit.h" |
c906108c | 64 | |
c906108c SS |
65 | #include <sys/types.h> |
66 | #include <fcntl.h> | |
53ce3c39 | 67 | #include <sys/stat.h> |
c906108c | 68 | #include <ctype.h> |
dcb07cfa | 69 | #include <chrono> |
37e136b1 | 70 | #include <algorithm> |
c906108c | 71 | |
ccefe4c4 | 72 | #include "psymtab.h" |
c906108c | 73 | |
3e43a32a MS |
74 | int (*deprecated_ui_load_progress_hook) (const char *section, |
75 | unsigned long num); | |
9a4105ab | 76 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
77 | unsigned long section_sent, |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
c2d11a7d | 80 | unsigned long total_size); |
769d7dc4 AC |
81 | void (*deprecated_pre_add_symbol_hook) (const char *); |
82 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 83 | |
286526c1 TT |
84 | using clear_symtab_users_cleanup |
85 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 86 | |
c378eb4e MS |
87 | /* Global variables owned by this file. */ |
88 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 89 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 90 | |
c378eb4e | 91 | /* Functions this file defines. */ |
c906108c | 92 | |
ecf45d2c | 93 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 94 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 95 | |
00b5771c | 96 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 97 | |
a14ed312 | 98 | static void overlay_invalidate_all (void); |
c906108c | 99 | |
a14ed312 | 100 | static void simple_free_overlay_table (void); |
c906108c | 101 | |
e17a4113 UW |
102 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
103 | enum bfd_endian); | |
c906108c | 104 | |
a14ed312 | 105 | static int simple_read_overlay_table (void); |
c906108c | 106 | |
a14ed312 | 107 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 108 | |
31d99776 DJ |
109 | static void symfile_find_segment_sections (struct objfile *objfile); |
110 | ||
c906108c SS |
111 | /* List of all available sym_fns. On gdb startup, each object file reader |
112 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 113 | prepared to read. */ |
c906108c | 114 | |
905014d7 | 115 | struct registered_sym_fns |
c256e171 | 116 | { |
905014d7 SM |
117 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
118 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
119 | {} | |
120 | ||
c256e171 DE |
121 | /* BFD flavour that we handle. */ |
122 | enum bfd_flavour sym_flavour; | |
123 | ||
124 | /* The "vtable" of symbol functions. */ | |
125 | const struct sym_fns *sym_fns; | |
905014d7 | 126 | }; |
c256e171 | 127 | |
905014d7 | 128 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 129 | |
770e7fc7 DE |
130 | /* Values for "set print symbol-loading". */ |
131 | ||
132 | const char print_symbol_loading_off[] = "off"; | |
133 | const char print_symbol_loading_brief[] = "brief"; | |
134 | const char print_symbol_loading_full[] = "full"; | |
135 | static const char *print_symbol_loading_enums[] = | |
136 | { | |
137 | print_symbol_loading_off, | |
138 | print_symbol_loading_brief, | |
139 | print_symbol_loading_full, | |
140 | NULL | |
141 | }; | |
142 | static const char *print_symbol_loading = print_symbol_loading_full; | |
143 | ||
f2f24aa9 | 144 | /* See symfile.h. */ |
c906108c | 145 | |
491144b5 | 146 | bool auto_solib_add = true; |
c906108c | 147 | \f |
c5aa993b | 148 | |
770e7fc7 DE |
149 | /* Return non-zero if symbol-loading messages should be printed. |
150 | FROM_TTY is the standard from_tty argument to gdb commands. | |
151 | If EXEC is non-zero the messages are for the executable. | |
152 | Otherwise, messages are for shared libraries. | |
153 | If FULL is non-zero then the caller is printing a detailed message. | |
154 | E.g., the message includes the shared library name. | |
155 | Otherwise, the caller is printing a brief "summary" message. */ | |
156 | ||
157 | int | |
158 | print_symbol_loading_p (int from_tty, int exec, int full) | |
159 | { | |
160 | if (!from_tty && !info_verbose) | |
161 | return 0; | |
162 | ||
163 | if (exec) | |
164 | { | |
165 | /* We don't check FULL for executables, there are few such | |
166 | messages, therefore brief == full. */ | |
167 | return print_symbol_loading != print_symbol_loading_off; | |
168 | } | |
169 | if (full) | |
170 | return print_symbol_loading == print_symbol_loading_full; | |
171 | return print_symbol_loading == print_symbol_loading_brief; | |
172 | } | |
173 | ||
0d14a781 | 174 | /* True if we are reading a symbol table. */ |
c906108c SS |
175 | |
176 | int currently_reading_symtab = 0; | |
177 | ||
ccefe4c4 TT |
178 | /* Increment currently_reading_symtab and return a cleanup that can be |
179 | used to decrement it. */ | |
3b7bacac | 180 | |
c83dd867 | 181 | scoped_restore_tmpl<int> |
ccefe4c4 | 182 | increment_reading_symtab (void) |
c906108c | 183 | { |
c83dd867 TT |
184 | gdb_assert (currently_reading_symtab >= 0); |
185 | return make_scoped_restore (¤tly_reading_symtab, | |
186 | currently_reading_symtab + 1); | |
c906108c SS |
187 | } |
188 | ||
5417f6dc RM |
189 | /* Remember the lowest-addressed loadable section we've seen. |
190 | This function is called via bfd_map_over_sections. | |
c906108c SS |
191 | |
192 | In case of equal vmas, the section with the largest size becomes the | |
193 | lowest-addressed loadable section. | |
194 | ||
195 | If the vmas and sizes are equal, the last section is considered the | |
196 | lowest-addressed loadable section. */ | |
197 | ||
198 | void | |
4efb68b1 | 199 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 200 | { |
c5aa993b | 201 | asection **lowest = (asection **) obj; |
c906108c | 202 | |
fd361982 | 203 | if (0 == (bfd_section_flags (sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
204 | return; |
205 | if (!*lowest) | |
206 | *lowest = sect; /* First loadable section */ | |
fd361982 | 207 | else if (bfd_section_vma (*lowest) > bfd_section_vma (sect)) |
c906108c | 208 | *lowest = sect; /* A lower loadable section */ |
fd361982 AM |
209 | else if (bfd_section_vma (*lowest) == bfd_section_vma (sect) |
210 | && (bfd_section_size (*lowest) <= bfd_section_size (sect))) | |
c906108c SS |
211 | *lowest = sect; |
212 | } | |
213 | ||
62557bbc | 214 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 215 | an existing section table. */ |
62557bbc | 216 | |
37e136b1 | 217 | section_addr_info |
0542c86d PA |
218 | build_section_addr_info_from_section_table (const struct target_section *start, |
219 | const struct target_section *end) | |
62557bbc | 220 | { |
0542c86d | 221 | const struct target_section *stp; |
62557bbc | 222 | |
37e136b1 | 223 | section_addr_info sap; |
62557bbc | 224 | |
37e136b1 | 225 | for (stp = start; stp != end; stp++) |
62557bbc | 226 | { |
2b2848e2 DE |
227 | struct bfd_section *asect = stp->the_bfd_section; |
228 | bfd *abfd = asect->owner; | |
229 | ||
fd361982 | 230 | if (bfd_section_flags (asect) & (SEC_ALLOC | SEC_LOAD) |
37e136b1 TT |
231 | && sap.size () < end - start) |
232 | sap.emplace_back (stp->addr, | |
fd361982 | 233 | bfd_section_name (asect), |
37e136b1 | 234 | gdb_bfd_section_index (abfd, asect)); |
62557bbc KB |
235 | } |
236 | ||
237 | return sap; | |
238 | } | |
239 | ||
82ccf5a5 | 240 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 241 | |
37e136b1 | 242 | static section_addr_info |
82ccf5a5 | 243 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 244 | { |
089b4803 TG |
245 | struct bfd_section *sec; |
246 | ||
37e136b1 TT |
247 | section_addr_info sap; |
248 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
fd361982 AM |
249 | if (bfd_section_flags (sec) & (SEC_ALLOC | SEC_LOAD)) |
250 | sap.emplace_back (bfd_section_vma (sec), | |
251 | bfd_section_name (sec), | |
37e136b1 | 252 | gdb_bfd_section_index (abfd, sec)); |
d76488d8 | 253 | |
089b4803 TG |
254 | return sap; |
255 | } | |
256 | ||
82ccf5a5 JK |
257 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
258 | ||
37e136b1 | 259 | section_addr_info |
82ccf5a5 JK |
260 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
261 | { | |
82ccf5a5 JK |
262 | int i; |
263 | ||
264 | /* Before reread_symbols gets rewritten it is not safe to call: | |
265 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
266 | */ | |
37e136b1 TT |
267 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
268 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 269 | { |
37e136b1 | 270 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 271 | |
6a053cb1 | 272 | sap[i].addr += objfile->section_offsets[sectindex]; |
82ccf5a5 JK |
273 | } |
274 | return sap; | |
275 | } | |
62557bbc | 276 | |
e8289572 | 277 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 278 | |
e8289572 JB |
279 | static void |
280 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 281 | { |
e8289572 | 282 | asection *sect; |
c906108c | 283 | int i; |
5417f6dc | 284 | |
b8fbeb18 | 285 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 286 | if (sect) |
b8fbeb18 EZ |
287 | objfile->sect_index_text = sect->index; |
288 | ||
289 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 290 | if (sect) |
b8fbeb18 EZ |
291 | objfile->sect_index_data = sect->index; |
292 | ||
293 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 294 | if (sect) |
b8fbeb18 EZ |
295 | objfile->sect_index_bss = sect->index; |
296 | ||
297 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 298 | if (sect) |
b8fbeb18 EZ |
299 | objfile->sect_index_rodata = sect->index; |
300 | ||
bbcd32ad FF |
301 | /* This is where things get really weird... We MUST have valid |
302 | indices for the various sect_index_* members or gdb will abort. | |
303 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
304 | accomodate that. First, check for a file with the standard |
305 | one or two segments. */ | |
306 | ||
307 | symfile_find_segment_sections (objfile); | |
308 | ||
309 | /* Except when explicitly adding symbol files at some address, | |
310 | section_offsets contains nothing but zeros, so it doesn't matter | |
311 | which slot in section_offsets the individual sect_index_* members | |
312 | index into. So if they are all zero, it is safe to just point | |
313 | all the currently uninitialized indices to the first slot. But | |
314 | beware: if this is the main executable, it may be relocated | |
315 | later, e.g. by the remote qOffsets packet, and then this will | |
316 | be wrong! That's why we try segments first. */ | |
bbcd32ad | 317 | |
6a053cb1 | 318 | for (i = 0; i < objfile->section_offsets.size (); i++) |
bbcd32ad | 319 | { |
6a053cb1 | 320 | if (objfile->section_offsets[i] != 0) |
bbcd32ad FF |
321 | { |
322 | break; | |
323 | } | |
324 | } | |
6a053cb1 | 325 | if (i == objfile->section_offsets.size ()) |
bbcd32ad FF |
326 | { |
327 | if (objfile->sect_index_text == -1) | |
328 | objfile->sect_index_text = 0; | |
329 | if (objfile->sect_index_data == -1) | |
330 | objfile->sect_index_data = 0; | |
331 | if (objfile->sect_index_bss == -1) | |
332 | objfile->sect_index_bss = 0; | |
333 | if (objfile->sect_index_rodata == -1) | |
334 | objfile->sect_index_rodata = 0; | |
335 | } | |
b8fbeb18 | 336 | } |
c906108c | 337 | |
c1bd25fd DJ |
338 | /* The arguments to place_section. */ |
339 | ||
340 | struct place_section_arg | |
341 | { | |
6a053cb1 | 342 | section_offsets *offsets; |
c1bd25fd DJ |
343 | CORE_ADDR lowest; |
344 | }; | |
345 | ||
346 | /* Find a unique offset to use for loadable section SECT if | |
347 | the user did not provide an offset. */ | |
348 | ||
2c0b251b | 349 | static void |
c1bd25fd DJ |
350 | place_section (bfd *abfd, asection *sect, void *obj) |
351 | { | |
19ba03f4 | 352 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
6a053cb1 TT |
353 | section_offsets &offsets = *arg->offsets; |
354 | CORE_ADDR start_addr; | |
c1bd25fd | 355 | int done; |
fd361982 | 356 | ULONGEST align = ((ULONGEST) 1) << bfd_section_alignment (sect); |
c1bd25fd | 357 | |
2711e456 | 358 | /* We are only interested in allocated sections. */ |
fd361982 | 359 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
360 | return; |
361 | ||
362 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 363 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
364 | return; |
365 | ||
366 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
367 | start_addr = (arg->lowest + align - 1) & -align; |
368 | ||
c1bd25fd DJ |
369 | do { |
370 | asection *cur_sec; | |
c1bd25fd | 371 | |
c1bd25fd DJ |
372 | done = 1; |
373 | ||
374 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
375 | { | |
376 | int indx = cur_sec->index; | |
c1bd25fd DJ |
377 | |
378 | /* We don't need to compare against ourself. */ | |
379 | if (cur_sec == sect) | |
380 | continue; | |
381 | ||
2711e456 | 382 | /* We can only conflict with allocated sections. */ |
fd361982 | 383 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
384 | continue; |
385 | ||
386 | /* If the section offset is 0, either the section has not been placed | |
387 | yet, or it was the lowest section placed (in which case LOWEST | |
388 | will be past its end). */ | |
389 | if (offsets[indx] == 0) | |
390 | continue; | |
391 | ||
392 | /* If this section would overlap us, then we must move up. */ | |
fd361982 AM |
393 | if (start_addr + bfd_section_size (sect) > offsets[indx] |
394 | && start_addr < offsets[indx] + bfd_section_size (cur_sec)) | |
c1bd25fd | 395 | { |
fd361982 | 396 | start_addr = offsets[indx] + bfd_section_size (cur_sec); |
c1bd25fd DJ |
397 | start_addr = (start_addr + align - 1) & -align; |
398 | done = 0; | |
3bd72c6f | 399 | break; |
c1bd25fd DJ |
400 | } |
401 | ||
402 | /* Otherwise, we appear to be OK. So far. */ | |
403 | } | |
404 | } | |
405 | while (!done); | |
406 | ||
65cf3563 | 407 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
fd361982 | 408 | arg->lowest = start_addr + bfd_section_size (sect); |
c1bd25fd | 409 | } |
e8289572 | 410 | |
4f7ae6f5 | 411 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
6a053cb1 | 412 | filled-in) by addr_info_make_relative into SECTION_OFFSETS. */ |
e8289572 JB |
413 | |
414 | void | |
6a053cb1 | 415 | relative_addr_info_to_section_offsets (section_offsets §ion_offsets, |
37e136b1 | 416 | const section_addr_info &addrs) |
e8289572 JB |
417 | { |
418 | int i; | |
419 | ||
6a053cb1 | 420 | section_offsets.assign (section_offsets.size (), 0); |
e8289572 | 421 | |
c378eb4e | 422 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 423 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 424 | { |
3189cb12 | 425 | const struct other_sections *osp; |
e8289572 | 426 | |
37e136b1 | 427 | osp = &addrs[i]; |
5488dafb | 428 | if (osp->sectindex == -1) |
e8289572 JB |
429 | continue; |
430 | ||
c378eb4e | 431 | /* Record all sections in offsets. */ |
e8289572 | 432 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 433 | the BFD index. */ |
6a053cb1 | 434 | section_offsets[osp->sectindex] = osp->addr; |
75242ef4 JK |
435 | } |
436 | } | |
437 | ||
1276c759 JK |
438 | /* Transform section name S for a name comparison. prelink can split section |
439 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
440 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
441 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
442 | (`.sbss') section has invalid (increased) virtual address. */ | |
443 | ||
444 | static const char * | |
445 | addr_section_name (const char *s) | |
446 | { | |
447 | if (strcmp (s, ".dynbss") == 0) | |
448 | return ".bss"; | |
449 | if (strcmp (s, ".sdynbss") == 0) | |
450 | return ".sbss"; | |
451 | ||
452 | return s; | |
453 | } | |
454 | ||
37e136b1 TT |
455 | /* std::sort comparator for addrs_section_sort. Sort entries in |
456 | ascending order by their (name, sectindex) pair. sectindex makes | |
457 | the sort by name stable. */ | |
82ccf5a5 | 458 | |
37e136b1 TT |
459 | static bool |
460 | addrs_section_compar (const struct other_sections *a, | |
461 | const struct other_sections *b) | |
82ccf5a5 | 462 | { |
22e048c9 | 463 | int retval; |
82ccf5a5 | 464 | |
37e136b1 TT |
465 | retval = strcmp (addr_section_name (a->name.c_str ()), |
466 | addr_section_name (b->name.c_str ())); | |
467 | if (retval != 0) | |
468 | return retval < 0; | |
82ccf5a5 | 469 | |
37e136b1 | 470 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
471 | } |
472 | ||
37e136b1 | 473 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 474 | |
37e136b1 TT |
475 | static std::vector<const struct other_sections *> |
476 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 477 | { |
82ccf5a5 JK |
478 | int i; |
479 | ||
37e136b1 TT |
480 | std::vector<const struct other_sections *> array (addrs.size ()); |
481 | for (i = 0; i < addrs.size (); i++) | |
482 | array[i] = &addrs[i]; | |
82ccf5a5 | 483 | |
37e136b1 | 484 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
485 | |
486 | return array; | |
487 | } | |
488 | ||
75242ef4 | 489 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
490 | also SECTINDEXes specific to ABFD there. This function can be used to |
491 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
492 | |
493 | void | |
37e136b1 | 494 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
495 | { |
496 | asection *lower_sect; | |
75242ef4 JK |
497 | CORE_ADDR lower_offset; |
498 | int i; | |
499 | ||
500 | /* Find lowest loadable section to be used as starting point for | |
85102364 | 501 | contiguous sections. */ |
e76ab67f DJ |
502 | lower_sect = NULL; |
503 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
504 | if (lower_sect == NULL) |
505 | { | |
506 | warning (_("no loadable sections found in added symbol-file %s"), | |
507 | bfd_get_filename (abfd)); | |
508 | lower_offset = 0; | |
e8289572 | 509 | } |
75242ef4 | 510 | else |
fd361982 | 511 | lower_offset = bfd_section_vma (lower_sect); |
75242ef4 | 512 | |
82ccf5a5 JK |
513 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
514 | in ABFD. Section names are not unique - there can be multiple sections of | |
515 | the same name. Also the sections of the same name do not have to be | |
516 | adjacent to each other. Some sections may be present only in one of the | |
517 | files. Even sections present in both files do not have to be in the same | |
518 | order. | |
519 | ||
520 | Use stable sort by name for the sections in both files. Then linearly | |
521 | scan both lists matching as most of the entries as possible. */ | |
522 | ||
37e136b1 TT |
523 | std::vector<const struct other_sections *> addrs_sorted |
524 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 525 | |
37e136b1 TT |
526 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
527 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
528 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 529 | |
c378eb4e MS |
530 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
531 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 532 | |
37e136b1 TT |
533 | std::vector<const struct other_sections *> |
534 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 535 | |
37e136b1 TT |
536 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
537 | = abfd_addrs_sorted.begin (); | |
52941706 | 538 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 539 | { |
37e136b1 | 540 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 541 | |
37e136b1 TT |
542 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
543 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 544 | sect_name) < 0) |
37e136b1 | 545 | abfd_sorted_iter++; |
82ccf5a5 | 546 | |
37e136b1 TT |
547 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
548 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 549 | sect_name) == 0) |
82ccf5a5 JK |
550 | { |
551 | int index_in_addrs; | |
552 | ||
553 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 554 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 555 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 556 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
557 | |
558 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 559 | abfd_sorted_iter++; |
82ccf5a5 | 560 | } |
82ccf5a5 JK |
561 | } |
562 | ||
75242ef4 JK |
563 | /* Calculate offsets for the loadable sections. |
564 | FIXME! Sections must be in order of increasing loadable section | |
565 | so that contiguous sections can use the lower-offset!!! | |
566 | ||
567 | Adjust offsets if the segments are not contiguous. | |
568 | If the section is contiguous, its offset should be set to | |
569 | the offset of the highest loadable section lower than it | |
570 | (the loadable section directly below it in memory). | |
571 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
572 | ||
37e136b1 | 573 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 574 | { |
37e136b1 | 575 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
576 | |
577 | if (sect) | |
75242ef4 | 578 | { |
c378eb4e | 579 | /* This is the index used by BFD. */ |
37e136b1 | 580 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 581 | |
37e136b1 | 582 | if ((*addrs)[i].addr != 0) |
75242ef4 | 583 | { |
37e136b1 TT |
584 | (*addrs)[i].addr -= sect->addr; |
585 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
586 | } |
587 | else | |
37e136b1 | 588 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
589 | } |
590 | else | |
672d9c23 | 591 | { |
1276c759 | 592 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 593 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 594 | |
b0fcb67f JK |
595 | /* This section does not exist in ABFD, which is normally |
596 | unexpected and we want to issue a warning. | |
597 | ||
4d9743af JK |
598 | However, the ELF prelinker does create a few sections which are |
599 | marked in the main executable as loadable (they are loaded in | |
600 | memory from the DYNAMIC segment) and yet are not present in | |
601 | separate debug info files. This is fine, and should not cause | |
602 | a warning. Shared libraries contain just the section | |
603 | ".gnu.liblist" but it is not marked as loadable there. There is | |
604 | no other way to identify them than by their name as the sections | |
1276c759 JK |
605 | created by prelink have no special flags. |
606 | ||
607 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 608 | |
37e136b1 TT |
609 | if (!(sect_name == ".gnu.liblist" |
610 | || sect_name == ".gnu.conflict" | |
611 | || (sect_name == ".bss" | |
1276c759 | 612 | && i > 0 |
37e136b1 | 613 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 614 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 615 | || (sect_name == ".sbss" |
1276c759 | 616 | && i > 0 |
37e136b1 | 617 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 618 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 619 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
620 | bfd_get_filename (abfd)); |
621 | ||
37e136b1 TT |
622 | (*addrs)[i].addr = 0; |
623 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 624 | } |
75242ef4 JK |
625 | } |
626 | } | |
627 | ||
628 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
629 | of how to represent it for fast symbol reading. This is the default | |
630 | version of the sym_fns.sym_offsets function for symbol readers that | |
631 | don't need to do anything special. It allocates a section_offsets table | |
632 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
633 | ||
634 | void | |
635 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 636 | const section_addr_info &addrs) |
75242ef4 | 637 | { |
6a053cb1 TT |
638 | objfile->section_offsets.resize (gdb_bfd_count_sections (objfile->obfd)); |
639 | relative_addr_info_to_section_offsets (objfile->section_offsets, addrs); | |
e8289572 | 640 | |
c1bd25fd DJ |
641 | /* For relocatable files, all loadable sections will start at zero. |
642 | The zero is meaningless, so try to pick arbitrary addresses such | |
643 | that no loadable sections overlap. This algorithm is quadratic, | |
644 | but the number of sections in a single object file is generally | |
645 | small. */ | |
646 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
647 | { | |
648 | struct place_section_arg arg; | |
2711e456 DJ |
649 | bfd *abfd = objfile->obfd; |
650 | asection *cur_sec; | |
2711e456 DJ |
651 | |
652 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
653 | /* We do not expect this to happen; just skip this step if the | |
654 | relocatable file has a section with an assigned VMA. */ | |
fd361982 | 655 | if (bfd_section_vma (cur_sec) != 0) |
2711e456 DJ |
656 | break; |
657 | ||
658 | if (cur_sec == NULL) | |
659 | { | |
6a053cb1 | 660 | section_offsets &offsets = objfile->section_offsets; |
2711e456 DJ |
661 | |
662 | /* Pick non-overlapping offsets for sections the user did not | |
663 | place explicitly. */ | |
6a053cb1 | 664 | arg.offsets = &objfile->section_offsets; |
2711e456 DJ |
665 | arg.lowest = 0; |
666 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
667 | ||
668 | /* Correctly filling in the section offsets is not quite | |
669 | enough. Relocatable files have two properties that | |
670 | (most) shared objects do not: | |
671 | ||
672 | - Their debug information will contain relocations. Some | |
673 | shared libraries do also, but many do not, so this can not | |
674 | be assumed. | |
675 | ||
676 | - If there are multiple code sections they will be loaded | |
677 | at different relative addresses in memory than they are | |
678 | in the objfile, since all sections in the file will start | |
679 | at address zero. | |
680 | ||
681 | Because GDB has very limited ability to map from an | |
682 | address in debug info to the correct code section, | |
683 | it relies on adding SECT_OFF_TEXT to things which might be | |
684 | code. If we clear all the section offsets, and set the | |
685 | section VMAs instead, then symfile_relocate_debug_section | |
686 | will return meaningful debug information pointing at the | |
687 | correct sections. | |
688 | ||
689 | GDB has too many different data structures for section | |
690 | addresses - a bfd, objfile, and so_list all have section | |
691 | tables, as does exec_ops. Some of these could probably | |
692 | be eliminated. */ | |
693 | ||
694 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
695 | cur_sec = cur_sec->next) | |
696 | { | |
fd361982 | 697 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
2711e456 DJ |
698 | continue; |
699 | ||
fd361982 | 700 | bfd_set_section_vma (cur_sec, offsets[cur_sec->index]); |
3e43a32a MS |
701 | exec_set_section_address (bfd_get_filename (abfd), |
702 | cur_sec->index, | |
30510692 | 703 | offsets[cur_sec->index]); |
2711e456 DJ |
704 | offsets[cur_sec->index] = 0; |
705 | } | |
706 | } | |
c1bd25fd DJ |
707 | } |
708 | ||
e8289572 | 709 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 710 | .rodata sections. */ |
e8289572 JB |
711 | init_objfile_sect_indices (objfile); |
712 | } | |
713 | ||
31d99776 DJ |
714 | /* Divide the file into segments, which are individual relocatable units. |
715 | This is the default version of the sym_fns.sym_segments function for | |
716 | symbol readers that do not have an explicit representation of segments. | |
717 | It assumes that object files do not have segments, and fully linked | |
718 | files have a single segment. */ | |
719 | ||
720 | struct symfile_segment_data * | |
721 | default_symfile_segments (bfd *abfd) | |
722 | { | |
723 | int num_sections, i; | |
724 | asection *sect; | |
725 | struct symfile_segment_data *data; | |
726 | CORE_ADDR low, high; | |
727 | ||
728 | /* Relocatable files contain enough information to position each | |
729 | loadable section independently; they should not be relocated | |
730 | in segments. */ | |
731 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
732 | return NULL; | |
733 | ||
734 | /* Make sure there is at least one loadable section in the file. */ | |
735 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
736 | { | |
fd361982 | 737 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
738 | continue; |
739 | ||
740 | break; | |
741 | } | |
742 | if (sect == NULL) | |
743 | return NULL; | |
744 | ||
fd361982 AM |
745 | low = bfd_section_vma (sect); |
746 | high = low + bfd_section_size (sect); | |
31d99776 | 747 | |
41bf6aca | 748 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 749 | data->num_segments = 1; |
fc270c35 TT |
750 | data->segment_bases = XCNEW (CORE_ADDR); |
751 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
752 | |
753 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 754 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
755 | |
756 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
757 | { | |
758 | CORE_ADDR vma; | |
759 | ||
fd361982 | 760 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
761 | continue; |
762 | ||
fd361982 | 763 | vma = bfd_section_vma (sect); |
31d99776 DJ |
764 | if (vma < low) |
765 | low = vma; | |
fd361982 AM |
766 | if (vma + bfd_section_size (sect) > high) |
767 | high = vma + bfd_section_size (sect); | |
31d99776 DJ |
768 | |
769 | data->segment_info[i] = 1; | |
770 | } | |
771 | ||
772 | data->segment_bases[0] = low; | |
773 | data->segment_sizes[0] = high - low; | |
774 | ||
775 | return data; | |
776 | } | |
777 | ||
608e2dbb TT |
778 | /* This is a convenience function to call sym_read for OBJFILE and |
779 | possibly force the partial symbols to be read. */ | |
780 | ||
781 | static void | |
b15cc25c | 782 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
783 | { |
784 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 785 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
786 | |
787 | /* find_separate_debug_file_in_section should be called only if there is | |
788 | single binary with no existing separate debug info file. */ | |
789 | if (!objfile_has_partial_symbols (objfile) | |
790 | && objfile->separate_debug_objfile == NULL | |
791 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 792 | { |
192b62ce | 793 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
794 | |
795 | if (abfd != NULL) | |
24ba069a JK |
796 | { |
797 | /* find_separate_debug_file_in_section uses the same filename for the | |
798 | virtual section-as-bfd like the bfd filename containing the | |
799 | section. Therefore use also non-canonical name form for the same | |
800 | file containing the section. */ | |
921222e2 TT |
801 | symbol_file_add_separate (abfd.get (), |
802 | bfd_get_filename (abfd.get ()), | |
803 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 804 | } |
608e2dbb TT |
805 | } |
806 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
26abc753 | 807 | require_partial_symbols (objfile, false); |
608e2dbb TT |
808 | } |
809 | ||
3d6e24f0 JB |
810 | /* Initialize entry point information for this objfile. */ |
811 | ||
812 | static void | |
813 | init_entry_point_info (struct objfile *objfile) | |
814 | { | |
6ef55de7 TT |
815 | struct entry_info *ei = &objfile->per_bfd->ei; |
816 | ||
817 | if (ei->initialized) | |
818 | return; | |
819 | ei->initialized = 1; | |
820 | ||
3d6e24f0 JB |
821 | /* Save startup file's range of PC addresses to help blockframe.c |
822 | decide where the bottom of the stack is. */ | |
823 | ||
824 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
825 | { | |
826 | /* Executable file -- record its entry point so we'll recognize | |
827 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
828 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
829 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
830 | } |
831 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
832 | && bfd_get_start_address (objfile->obfd) != 0) | |
833 | { | |
834 | /* Some shared libraries may have entry points set and be | |
835 | runnable. There's no clear way to indicate this, so just check | |
836 | for values other than zero. */ | |
6ef55de7 TT |
837 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
838 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
839 | } |
840 | else | |
841 | { | |
842 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 843 | ei->entry_point_p = 0; |
3d6e24f0 JB |
844 | } |
845 | ||
6ef55de7 | 846 | if (ei->entry_point_p) |
3d6e24f0 | 847 | { |
53eddfa6 | 848 | struct obj_section *osect; |
6ef55de7 | 849 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 850 | int found; |
3d6e24f0 JB |
851 | |
852 | /* Make certain that the address points at real code, and not a | |
853 | function descriptor. */ | |
854 | entry_point | |
df6d5441 | 855 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 | 856 | entry_point, |
8b88a78e | 857 | current_top_target ()); |
3d6e24f0 JB |
858 | |
859 | /* Remove any ISA markers, so that this matches entries in the | |
860 | symbol table. */ | |
6ef55de7 | 861 | ei->entry_point |
df6d5441 | 862 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
863 | |
864 | found = 0; | |
865 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
866 | { | |
867 | struct bfd_section *sect = osect->the_bfd_section; | |
868 | ||
fd361982 AM |
869 | if (entry_point >= bfd_section_vma (sect) |
870 | && entry_point < (bfd_section_vma (sect) | |
871 | + bfd_section_size (sect))) | |
53eddfa6 | 872 | { |
6ef55de7 | 873 | ei->the_bfd_section_index |
53eddfa6 TT |
874 | = gdb_bfd_section_index (objfile->obfd, sect); |
875 | found = 1; | |
876 | break; | |
877 | } | |
878 | } | |
879 | ||
880 | if (!found) | |
6ef55de7 | 881 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
882 | } |
883 | } | |
884 | ||
c906108c SS |
885 | /* Process a symbol file, as either the main file or as a dynamically |
886 | loaded file. | |
887 | ||
36e4d068 JB |
888 | This function does not set the OBJFILE's entry-point info. |
889 | ||
96baa820 JM |
890 | OBJFILE is where the symbols are to be read from. |
891 | ||
7e8580c1 JB |
892 | ADDRS is the list of section load addresses. If the user has given |
893 | an 'add-symbol-file' command, then this is the list of offsets and | |
894 | addresses he or she provided as arguments to the command; or, if | |
895 | we're handling a shared library, these are the actual addresses the | |
896 | sections are loaded at, according to the inferior's dynamic linker | |
897 | (as gleaned by GDB's shared library code). We convert each address | |
898 | into an offset from the section VMA's as it appears in the object | |
899 | file, and then call the file's sym_offsets function to convert this | |
6a053cb1 | 900 | into a format-specific offset table --- a `section_offsets'. |
d81a3eaf PT |
901 | The sectindex field is used to control the ordering of sections |
902 | with the same name. Upon return, it is updated to contain the | |
85102364 | 903 | corresponding BFD section index, or -1 if the section was not found. |
96baa820 | 904 | |
7eedccfa | 905 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
f71433ee | 906 | an extra symbol file such as dynamically loaded code, and whether |
7eedccfa | 907 | breakpoint reset should be deferred. */ |
c906108c | 908 | |
36e4d068 JB |
909 | static void |
910 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 911 | section_addr_info *addrs, |
b15cc25c | 912 | symfile_add_flags add_flags) |
c906108c | 913 | { |
37e136b1 | 914 | section_addr_info local_addr; |
7eedccfa | 915 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 916 | |
8fb8eb5c | 917 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 918 | |
75245b24 | 919 | if (objfile->sf == NULL) |
36e4d068 JB |
920 | { |
921 | /* No symbols to load, but we still need to make sure | |
922 | that the section_offsets table is allocated. */ | |
d445b2f6 | 923 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
36e4d068 | 924 | |
6a053cb1 | 925 | objfile->section_offsets.assign (num_sections, 0); |
36e4d068 JB |
926 | return; |
927 | } | |
75245b24 | 928 | |
c906108c SS |
929 | /* Make sure that partially constructed symbol tables will be cleaned up |
930 | if an error occurs during symbol reading. */ | |
286526c1 TT |
931 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
932 | ||
268e4f09 | 933 | objfile_up objfile_holder (objfile); |
c906108c | 934 | |
6bf667bb DE |
935 | /* If ADDRS is NULL, put together a dummy address list. |
936 | We now establish the convention that an addr of zero means | |
c378eb4e | 937 | no load address was specified. */ |
6bf667bb | 938 | if (! addrs) |
37e136b1 | 939 | addrs = &local_addr; |
a39a16c4 | 940 | |
c5aa993b | 941 | if (mainline) |
c906108c SS |
942 | { |
943 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 944 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 945 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
946 | |
947 | /* Since no error yet, throw away the old symbol table. */ | |
948 | ||
949 | if (symfile_objfile != NULL) | |
950 | { | |
268e4f09 | 951 | symfile_objfile->unlink (); |
adb7f338 | 952 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
953 | } |
954 | ||
955 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
956 | If the user wants to get rid of them, they should do "symbol-file" |
957 | without arguments first. Not sure this is the best behavior | |
958 | (PR 2207). */ | |
c906108c | 959 | |
c5aa993b | 960 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
961 | } |
962 | ||
963 | /* Convert addr into an offset rather than an absolute address. | |
964 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 965 | and assume that <addr> is where that got loaded. |
c906108c | 966 | |
53a5351d JM |
967 | We no longer warn if the lowest section is not a text segment (as |
968 | happens for the PA64 port. */ | |
37e136b1 | 969 | if (addrs->size () > 0) |
75242ef4 | 970 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
971 | |
972 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
973 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 974 | initial symbol reading for this file. */ |
c906108c | 975 | |
c5aa993b | 976 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 977 | clear_complaints (); |
c906108c | 978 | |
37e136b1 | 979 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 980 | |
608e2dbb | 981 | read_symbols (objfile, add_flags); |
b11896a5 | 982 | |
c906108c SS |
983 | /* Discard cleanups as symbol reading was successful. */ |
984 | ||
ed2b3126 | 985 | objfile_holder.release (); |
286526c1 TT |
986 | if (defer_clear_users) |
987 | defer_clear_users->release (); | |
c906108c SS |
988 | } |
989 | ||
36e4d068 JB |
990 | /* Same as syms_from_objfile_1, but also initializes the objfile |
991 | entry-point info. */ | |
992 | ||
6bf667bb | 993 | static void |
36e4d068 | 994 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 995 | section_addr_info *addrs, |
b15cc25c | 996 | symfile_add_flags add_flags) |
36e4d068 | 997 | { |
6bf667bb | 998 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
999 | init_entry_point_info (objfile); |
1000 | } | |
1001 | ||
c906108c SS |
1002 | /* Perform required actions after either reading in the initial |
1003 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1004 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1005 | |
e7d52ed3 | 1006 | static void |
b15cc25c | 1007 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1008 | { |
c906108c | 1009 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1010 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1011 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1012 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1013 | { |
1014 | /* OK, make it the "real" symbol file. */ | |
1015 | symfile_objfile = objfile; | |
1016 | ||
c1e56572 | 1017 | clear_symtab_users (add_flags); |
c906108c | 1018 | } |
7eedccfa | 1019 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1020 | { |
69de3c6a | 1021 | breakpoint_re_set (); |
c906108c SS |
1022 | } |
1023 | ||
1024 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1025 | clear_complaints (); |
c906108c SS |
1026 | } |
1027 | ||
1028 | /* Process a symbol file, as either the main file or as a dynamically | |
1029 | loaded file. | |
1030 | ||
5417f6dc | 1031 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1032 | A new reference is acquired by this function. |
7904e09f | 1033 | |
9e86da07 | 1034 | For NAME description see the objfile constructor. |
24ba069a | 1035 | |
7eedccfa | 1036 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
30baf67b | 1037 | extra, such as dynamically loaded code, and what to do with breakpoints. |
7904e09f | 1038 | |
6bf667bb | 1039 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1040 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1041 | |
63524580 JK |
1042 | PARENT is the original objfile if ABFD is a separate debug info file. |
1043 | Otherwise PARENT is NULL. | |
1044 | ||
c906108c | 1045 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1046 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1047 | |
7904e09f | 1048 | static struct objfile * |
b15cc25c PA |
1049 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1050 | symfile_add_flags add_flags, | |
37e136b1 | 1051 | section_addr_info *addrs, |
b15cc25c | 1052 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1053 | { |
1054 | struct objfile *objfile; | |
7eedccfa | 1055 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1056 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1057 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1058 | && (readnow_symbol_files |
1059 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1060 | |
9291a0cd | 1061 | if (readnow_symbol_files) |
b11896a5 TT |
1062 | { |
1063 | flags |= OBJF_READNOW; | |
1064 | add_flags &= ~SYMFILE_NO_READ; | |
1065 | } | |
97cbe998 SDJ |
1066 | else if (readnever_symbol_files |
1067 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1068 | { | |
1069 | flags |= OBJF_READNEVER; | |
1070 | add_flags |= SYMFILE_NO_READ; | |
1071 | } | |
921222e2 TT |
1072 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1073 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1074 | |
5417f6dc RM |
1075 | /* Give user a chance to burp if we'd be |
1076 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1077 | |
1078 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1079 | && mainline |
c906108c | 1080 | && from_tty |
9e2f0ad4 | 1081 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1082 | error (_("Not confirmed.")); |
c906108c | 1083 | |
b15cc25c PA |
1084 | if (mainline) |
1085 | flags |= OBJF_MAINLINE; | |
f65fe570 | 1086 | objfile = objfile::make (abfd, name, flags, parent); |
63524580 | 1087 | |
78a4a9b9 AC |
1088 | /* We either created a new mapped symbol table, mapped an existing |
1089 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1090 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1091 | if (should_print) |
c906108c | 1092 | { |
769d7dc4 AC |
1093 | if (deprecated_pre_add_symbol_hook) |
1094 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1095 | else |
6a831f06 PA |
1096 | printf_filtered (_("Reading symbols from %ps...\n"), |
1097 | styled_string (file_name_style.style (), name)); | |
c906108c | 1098 | } |
6bf667bb | 1099 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1100 | |
1101 | /* We now have at least a partial symbol table. Check to see if the | |
1102 | user requested that all symbols be read on initial access via either | |
1103 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1104 | all partial symbol tables for this objfile if so. */ |
c906108c | 1105 | |
9291a0cd | 1106 | if ((flags & OBJF_READNOW)) |
c906108c | 1107 | { |
b11896a5 | 1108 | if (should_print) |
6a831f06 PA |
1109 | printf_filtered (_("Expanding full symbols from %ps...\n"), |
1110 | styled_string (file_name_style.style (), name)); | |
c906108c | 1111 | |
ccefe4c4 TT |
1112 | if (objfile->sf) |
1113 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1114 | } |
1115 | ||
e79497a1 TT |
1116 | /* Note that we only print a message if we have no symbols and have |
1117 | no separate debug file. If there is a separate debug file which | |
1118 | does not have symbols, we'll have emitted this message for that | |
1119 | file, and so printing it twice is just redundant. */ | |
1120 | if (should_print && !objfile_has_symbols (objfile) | |
1121 | && objfile->separate_debug_objfile == nullptr) | |
6a831f06 PA |
1122 | printf_filtered (_("(No debugging symbols found in %ps)\n"), |
1123 | styled_string (file_name_style.style (), name)); | |
cb3c37b2 | 1124 | |
b11896a5 | 1125 | if (should_print) |
c906108c | 1126 | { |
769d7dc4 AC |
1127 | if (deprecated_post_add_symbol_hook) |
1128 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1129 | } |
1130 | ||
481d0f41 JB |
1131 | /* We print some messages regardless of whether 'from_tty || |
1132 | info_verbose' is true, so make sure they go out at the right | |
1133 | time. */ | |
1134 | gdb_flush (gdb_stdout); | |
1135 | ||
109f874e | 1136 | if (objfile->sf == NULL) |
8caee43b | 1137 | { |
76727919 | 1138 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1139 | return objfile; /* No symbols. */ |
8caee43b | 1140 | } |
109f874e | 1141 | |
e7d52ed3 | 1142 | finish_new_objfile (objfile, add_flags); |
c906108c | 1143 | |
76727919 | 1144 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1145 | |
ce7d4522 | 1146 | bfd_cache_close_all (); |
c906108c SS |
1147 | return (objfile); |
1148 | } | |
1149 | ||
24ba069a | 1150 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1151 | see the objfile constructor. */ |
9cce227f TG |
1152 | |
1153 | void | |
b15cc25c PA |
1154 | symbol_file_add_separate (bfd *bfd, const char *name, |
1155 | symfile_add_flags symfile_flags, | |
24ba069a | 1156 | struct objfile *objfile) |
9cce227f | 1157 | { |
089b4803 TG |
1158 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1159 | because sections of BFD may not match sections of OBJFILE and because | |
1160 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1161 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1162 | |
870f88f7 | 1163 | symbol_file_add_with_addrs |
37e136b1 | 1164 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1165 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1166 | | OBJF_USERLOADED), |
1167 | objfile); | |
9cce227f | 1168 | } |
7904e09f | 1169 | |
eb4556d7 JB |
1170 | /* Process the symbol file ABFD, as either the main file or as a |
1171 | dynamically loaded file. | |
6bf667bb | 1172 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1173 | |
eb4556d7 | 1174 | struct objfile * |
b15cc25c PA |
1175 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1176 | symfile_add_flags add_flags, | |
37e136b1 | 1177 | section_addr_info *addrs, |
b15cc25c | 1178 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1179 | { |
24ba069a JK |
1180 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1181 | parent); | |
eb4556d7 JB |
1182 | } |
1183 | ||
7904e09f | 1184 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1185 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1186 | |
7904e09f | 1187 | struct objfile * |
b15cc25c | 1188 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1189 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1190 | { |
192b62ce | 1191 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1192 | |
192b62ce TT |
1193 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1194 | flags, NULL); | |
7904e09f JB |
1195 | } |
1196 | ||
d7db6da9 FN |
1197 | /* Call symbol_file_add() with default values and update whatever is |
1198 | affected by the loading of a new main(). | |
1199 | Used when the file is supplied in the gdb command line | |
1200 | and by some targets with special loading requirements. | |
1201 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1202 | argument for the switches that can only be specified in the symbol_file | |
1203 | command itself. */ | |
5417f6dc | 1204 | |
1adeb98a | 1205 | void |
ecf45d2c | 1206 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1207 | { |
d4d429d5 | 1208 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1209 | } |
1210 | ||
1211 | static void | |
ecf45d2c | 1212 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1213 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1214 | { |
ecf45d2c | 1215 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1216 | |
d4d429d5 PT |
1217 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1218 | if (reloff != 0) | |
1219 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1220 | |
d7db6da9 FN |
1221 | /* Getting new symbols may change our opinion about |
1222 | what is frameless. */ | |
1223 | reinit_frame_cache (); | |
1224 | ||
b15cc25c | 1225 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1226 | set_initial_language (); |
1adeb98a FN |
1227 | } |
1228 | ||
1229 | void | |
1230 | symbol_file_clear (int from_tty) | |
1231 | { | |
1232 | if ((have_full_symbols () || have_partial_symbols ()) | |
1233 | && from_tty | |
0430b0d6 AS |
1234 | && (symfile_objfile |
1235 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1236 | objfile_name (symfile_objfile)) |
0430b0d6 | 1237 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1238 | error (_("Not confirmed.")); |
1adeb98a | 1239 | |
0133421a JK |
1240 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1241 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1242 | no_shared_libraries (NULL, from_tty); |
1243 | ||
343cc952 | 1244 | current_program_space->free_all_objfiles (); |
0133421a | 1245 | |
f3c469b9 PA |
1246 | clear_symtab_users (0); |
1247 | ||
adb7f338 | 1248 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1249 | if (from_tty) |
22068491 | 1250 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1251 | } |
1252 | ||
c4dcb155 SM |
1253 | /* See symfile.h. */ |
1254 | ||
491144b5 | 1255 | bool separate_debug_file_debug = false; |
c4dcb155 | 1256 | |
5b5d99cf | 1257 | static int |
a8dbfd58 | 1258 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1259 | struct objfile *parent_objfile) |
5b5d99cf | 1260 | { |
904578ed JK |
1261 | unsigned long file_crc; |
1262 | int file_crc_p; | |
32a0e547 | 1263 | struct stat parent_stat, abfd_stat; |
904578ed | 1264 | int verified_as_different; |
32a0e547 JK |
1265 | |
1266 | /* Find a separate debug info file as if symbols would be present in | |
1267 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1268 | section can contain just the basename of PARENT_OBJFILE without any | |
1269 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1270 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1271 | |
a8dbfd58 | 1272 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1273 | return 0; |
5b5d99cf | 1274 | |
c4dcb155 | 1275 | if (separate_debug_file_debug) |
50794b45 SM |
1276 | { |
1277 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1278 | gdb_flush (gdb_stdout); | |
1279 | } | |
c4dcb155 | 1280 | |
a8dbfd58 | 1281 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1)); |
f1838a98 | 1282 | |
192b62ce | 1283 | if (abfd == NULL) |
50794b45 SM |
1284 | { |
1285 | if (separate_debug_file_debug) | |
1286 | printf_filtered (_(" no, unable to open.\n")); | |
1287 | ||
1288 | return 0; | |
1289 | } | |
5b5d99cf | 1290 | |
0ba1096a | 1291 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1292 | |
1293 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1294 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1295 | meaningful st_dev.) Files accessed from gdbservers that do not |
1296 | support the vFile:fstat packet will also have st_ino set to zero. | |
1297 | Do not indicate a duplicate library in either case. While there | |
1298 | is no guarantee that a system that provides meaningful inode | |
1299 | numbers will never set st_ino to zero, this is merely an | |
1300 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1301 | |
192b62ce | 1302 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1303 | && abfd_stat.st_ino != 0 |
1304 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1305 | { |
904578ed JK |
1306 | if (abfd_stat.st_dev == parent_stat.st_dev |
1307 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1308 | { |
1309 | if (separate_debug_file_debug) | |
1310 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1311 | ||
1312 | return 0; | |
1313 | } | |
904578ed | 1314 | verified_as_different = 1; |
32a0e547 | 1315 | } |
904578ed JK |
1316 | else |
1317 | verified_as_different = 0; | |
32a0e547 | 1318 | |
192b62ce | 1319 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1320 | |
904578ed | 1321 | if (!file_crc_p) |
50794b45 SM |
1322 | { |
1323 | if (separate_debug_file_debug) | |
1324 | printf_filtered (_(" no, error computing CRC.\n")); | |
1325 | ||
1326 | return 0; | |
1327 | } | |
904578ed | 1328 | |
287ccc17 JK |
1329 | if (crc != file_crc) |
1330 | { | |
dccee2de TT |
1331 | unsigned long parent_crc; |
1332 | ||
0a93529c GB |
1333 | /* If the files could not be verified as different with |
1334 | bfd_stat then we need to calculate the parent's CRC | |
1335 | to verify whether the files are different or not. */ | |
904578ed | 1336 | |
dccee2de | 1337 | if (!verified_as_different) |
904578ed | 1338 | { |
dccee2de | 1339 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1340 | { |
1341 | if (separate_debug_file_debug) | |
1342 | printf_filtered (_(" no, error computing CRC.\n")); | |
1343 | ||
1344 | return 0; | |
1345 | } | |
904578ed JK |
1346 | } |
1347 | ||
dccee2de | 1348 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1349 | warning (_("the debug information found in \"%s\"" |
1350 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1351 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1352 | |
50794b45 SM |
1353 | if (separate_debug_file_debug) |
1354 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1355 | ||
287ccc17 JK |
1356 | return 0; |
1357 | } | |
1358 | ||
50794b45 SM |
1359 | if (separate_debug_file_debug) |
1360 | printf_filtered (_(" yes!\n")); | |
1361 | ||
287ccc17 | 1362 | return 1; |
5b5d99cf JB |
1363 | } |
1364 | ||
aa28a74e | 1365 | char *debug_file_directory = NULL; |
920d2a44 AC |
1366 | static void |
1367 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1368 | struct cmd_list_element *c, const char *value) | |
1369 | { | |
3e43a32a MS |
1370 | fprintf_filtered (file, |
1371 | _("The directory where separate debug " | |
1372 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1373 | value); |
1374 | } | |
5b5d99cf JB |
1375 | |
1376 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1377 | #define DEBUG_SUBDIRECTORY ".debug" | |
1378 | #endif | |
1379 | ||
1db33378 PP |
1380 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1381 | where the original file resides (may not be the same as | |
1382 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1383 | looking for. CANON_DIR is the "realpath" form of DIR. |
1384 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1385 | Returns the path of the file with separate debug info, or an empty |
1386 | string. */ | |
1db33378 | 1387 | |
a8dbfd58 | 1388 | static std::string |
1db33378 PP |
1389 | find_separate_debug_file (const char *dir, |
1390 | const char *canon_dir, | |
1391 | const char *debuglink, | |
1392 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1393 | { |
c4dcb155 | 1394 | if (separate_debug_file_debug) |
22068491 TT |
1395 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1396 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1397 | |
5b5d99cf | 1398 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1399 | std::string debugfile = dir; |
1400 | debugfile += debuglink; | |
5b5d99cf | 1401 | |
32a0e547 | 1402 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1403 | return debugfile; |
5417f6dc | 1404 | |
5b5d99cf | 1405 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1406 | debugfile = dir; |
1407 | debugfile += DEBUG_SUBDIRECTORY; | |
1408 | debugfile += "/"; | |
1409 | debugfile += debuglink; | |
5b5d99cf | 1410 | |
32a0e547 | 1411 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1412 | return debugfile; |
5417f6dc | 1413 | |
24ddea62 | 1414 | /* Then try in the global debugfile directories. |
f888f159 | 1415 | |
24ddea62 JK |
1416 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1417 | cause "/..." lookups. */ | |
5417f6dc | 1418 | |
5d36dfb9 AU |
1419 | bool target_prefix = startswith (dir, "target:"); |
1420 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1421 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1422 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
f62318e9 | 1423 | gdb::unique_xmalloc_ptr<char> canon_sysroot = gdb_realpath (gdb_sysroot); |
24ddea62 | 1424 | |
5f2459c2 EZ |
1425 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1426 | convert the drive letter into a one-letter directory, so that the | |
1427 | file name resulting from splicing below will be valid. | |
1428 | ||
1429 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1430 | There are various remote-debugging scenarios where such a | |
1431 | transformation of the drive letter might be required when GDB runs | |
1432 | on a Posix host, see | |
1433 | ||
1434 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1435 | ||
85102364 | 1436 | If some of those scenarios need to be supported, we will need to |
5f2459c2 EZ |
1437 | use a different condition for HAS_DRIVE_SPEC and a different macro |
1438 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1439 | std::string drive; | |
1440 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1441 | { | |
1442 | drive = dir_notarget[0]; | |
1443 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1444 | } | |
1445 | ||
e80aaf61 | 1446 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1447 | { |
5d36dfb9 AU |
1448 | debugfile = target_prefix ? "target:" : ""; |
1449 | debugfile += debugdir.get (); | |
a8dbfd58 | 1450 | debugfile += "/"; |
5f2459c2 | 1451 | debugfile += drive; |
5d36dfb9 | 1452 | debugfile += dir_notarget; |
a8dbfd58 | 1453 | debugfile += debuglink; |
aa28a74e | 1454 | |
32a0e547 | 1455 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1456 | return debugfile; |
24ddea62 | 1457 | |
f62318e9 JB |
1458 | const char *base_path = NULL; |
1459 | if (canon_dir != NULL) | |
1460 | { | |
1461 | if (canon_sysroot.get () != NULL) | |
1462 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1463 | else | |
1464 | base_path = child_path (gdb_sysroot, canon_dir); | |
1465 | } | |
1466 | if (base_path != NULL) | |
24ddea62 | 1467 | { |
402d2bfe JB |
1468 | /* If the file is in the sysroot, try using its base path in |
1469 | the global debugfile directory. */ | |
5d36dfb9 AU |
1470 | debugfile = target_prefix ? "target:" : ""; |
1471 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1472 | debugfile += "/"; |
1473 | debugfile += base_path; | |
a8dbfd58 SM |
1474 | debugfile += "/"; |
1475 | debugfile += debuglink; | |
24ddea62 | 1476 | |
402d2bfe JB |
1477 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1478 | return debugfile; | |
1479 | ||
1480 | /* If the file is in the sysroot, try using its base path in | |
1481 | the sysroot's global debugfile directory. */ | |
1482 | debugfile = target_prefix ? "target:" : ""; | |
1483 | debugfile += gdb_sysroot; | |
1484 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1485 | debugfile += "/"; |
1486 | debugfile += base_path; | |
402d2bfe JB |
1487 | debugfile += "/"; |
1488 | debugfile += debuglink; | |
1489 | ||
32a0e547 | 1490 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1491 | return debugfile; |
24ddea62 | 1492 | } |
402d2bfe | 1493 | |
aa28a74e | 1494 | } |
f888f159 | 1495 | |
a8dbfd58 | 1496 | return std::string (); |
1db33378 PP |
1497 | } |
1498 | ||
7edbb660 | 1499 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1500 | If there were no directory separators in PATH, PATH will be empty |
1501 | string on return. */ | |
1502 | ||
1503 | static void | |
1504 | terminate_after_last_dir_separator (char *path) | |
1505 | { | |
1506 | int i; | |
1507 | ||
1508 | /* Strip off the final filename part, leaving the directory name, | |
1509 | followed by a slash. The directory can be relative or absolute. */ | |
1510 | for (i = strlen(path) - 1; i >= 0; i--) | |
1511 | if (IS_DIR_SEPARATOR (path[i])) | |
1512 | break; | |
1513 | ||
1514 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1515 | path[i + 1] = '\0'; | |
1516 | } | |
1517 | ||
1518 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1519 | Returns pathname, or an empty string. */ |
1db33378 | 1520 | |
a8dbfd58 | 1521 | std::string |
1db33378 PP |
1522 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1523 | { | |
1db33378 | 1524 | unsigned long crc32; |
1db33378 | 1525 | |
5eae7aea TT |
1526 | gdb::unique_xmalloc_ptr<char> debuglink |
1527 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1528 | |
1529 | if (debuglink == NULL) | |
1530 | { | |
1531 | /* There's no separate debug info, hence there's no way we could | |
1532 | load it => no warning. */ | |
a8dbfd58 | 1533 | return std::string (); |
1db33378 PP |
1534 | } |
1535 | ||
5eae7aea TT |
1536 | std::string dir = objfile_name (objfile); |
1537 | terminate_after_last_dir_separator (&dir[0]); | |
1538 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1539 | |
a8dbfd58 SM |
1540 | std::string debugfile |
1541 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1542 | debuglink.get (), crc32, objfile); | |
1db33378 | 1543 | |
a8dbfd58 | 1544 | if (debugfile.empty ()) |
1db33378 | 1545 | { |
1db33378 PP |
1546 | /* For PR gdb/9538, try again with realpath (if different from the |
1547 | original). */ | |
1548 | ||
1549 | struct stat st_buf; | |
1550 | ||
4262abfb JK |
1551 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1552 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1553 | { |
5eae7aea TT |
1554 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1555 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1556 | if (symlink_dir != NULL) |
1557 | { | |
5eae7aea TT |
1558 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1559 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1560 | { |
1561 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1562 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1563 | symlink_dir.get (), | |
1564 | debuglink.get (), | |
1db33378 PP |
1565 | crc32, |
1566 | objfile); | |
1567 | } | |
1568 | } | |
1569 | } | |
1db33378 | 1570 | } |
aa28a74e | 1571 | |
25522fae | 1572 | return debugfile; |
5b5d99cf JB |
1573 | } |
1574 | ||
97cbe998 SDJ |
1575 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1576 | simultaneously. */ | |
1577 | ||
1578 | static void | |
1579 | validate_readnow_readnever (objfile_flags flags) | |
1580 | { | |
1581 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1582 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1583 | } | |
1584 | ||
c906108c SS |
1585 | /* This is the symbol-file command. Read the file, analyze its |
1586 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1587 | the command is rather bizarre: |
1588 | ||
1589 | 1. The function buildargv implements various quoting conventions | |
1590 | which are undocumented and have little or nothing in common with | |
1591 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1592 | ||
1593 | 2. Options are used, which are not generally used in GDB (perhaps | |
1594 | "set mapped on", "set readnow on" would be better) | |
1595 | ||
1596 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1597 | conventions (because it is confusing and inconvenient). */ |
1598 | ||
1599 | void | |
1d8b34a7 | 1600 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1601 | { |
c906108c SS |
1602 | dont_repeat (); |
1603 | ||
1604 | if (args == NULL) | |
1605 | { | |
1adeb98a | 1606 | symbol_file_clear (from_tty); |
c906108c SS |
1607 | } |
1608 | else | |
1609 | { | |
b15cc25c | 1610 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1611 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1612 | char *name = NULL; |
40fc416f | 1613 | bool stop_processing_options = false; |
d4d429d5 | 1614 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1615 | int idx; |
1616 | char *arg; | |
cb2f3a29 | 1617 | |
ecf45d2c SL |
1618 | if (from_tty) |
1619 | add_flags |= SYMFILE_VERBOSE; | |
1620 | ||
773a1edc | 1621 | gdb_argv built_argv (args); |
40fc416f | 1622 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1623 | { |
40fc416f | 1624 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1625 | { |
40fc416f SDJ |
1626 | if (name == NULL) |
1627 | name = arg; | |
1628 | else | |
1629 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1630 | } |
40fc416f SDJ |
1631 | else if (strcmp (arg, "-readnow") == 0) |
1632 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1633 | else if (strcmp (arg, "-readnever") == 0) |
1634 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1635 | else if (strcmp (arg, "-o") == 0) |
1636 | { | |
1637 | arg = built_argv[++idx]; | |
1638 | if (arg == NULL) | |
1639 | error (_("Missing argument to -o")); | |
1640 | ||
1641 | offset = parse_and_eval_address (arg); | |
1642 | } | |
40fc416f SDJ |
1643 | else if (strcmp (arg, "--") == 0) |
1644 | stop_processing_options = true; | |
1645 | else | |
1646 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1647 | } |
1648 | ||
1649 | if (name == NULL) | |
cb2f3a29 | 1650 | error (_("no symbol file name was specified")); |
40fc416f | 1651 | |
97cbe998 SDJ |
1652 | validate_readnow_readnever (flags); |
1653 | ||
ea142fbf AH |
1654 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1655 | (Position Independent Executable) main symbol file will only be | |
1656 | computed by the solib_create_inferior_hook below. Without it, | |
1657 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1658 | displacement. */ | |
1659 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1660 | ||
d4d429d5 | 1661 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1662 | |
1663 | solib_create_inferior_hook (from_tty); | |
1664 | ||
1665 | /* Now it's safe to re-add the breakpoints. */ | |
1666 | breakpoint_re_set (); | |
c906108c SS |
1667 | } |
1668 | } | |
1669 | ||
1670 | /* Set the initial language. | |
1671 | ||
cb2f3a29 MK |
1672 | FIXME: A better solution would be to record the language in the |
1673 | psymtab when reading partial symbols, and then use it (if known) to | |
1674 | set the language. This would be a win for formats that encode the | |
1675 | language in an easily discoverable place, such as DWARF. For | |
1676 | stabs, we can jump through hoops looking for specially named | |
1677 | symbols or try to intuit the language from the specific type of | |
1678 | stabs we find, but we can't do that until later when we read in | |
1679 | full symbols. */ | |
c906108c | 1680 | |
8b60591b | 1681 | void |
fba45db2 | 1682 | set_initial_language (void) |
c906108c | 1683 | { |
9e6c82ad | 1684 | enum language lang = main_language (); |
c906108c | 1685 | |
9e6c82ad | 1686 | if (lang == language_unknown) |
01f8c46d | 1687 | { |
cd215b2e | 1688 | const char *name = main_name (); |
d12307c1 | 1689 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1690 | |
bf6d8a91 | 1691 | if (sym != NULL) |
c1b5c1eb | 1692 | lang = sym->language (); |
01f8c46d | 1693 | } |
cb2f3a29 | 1694 | |
ccefe4c4 TT |
1695 | if (lang == language_unknown) |
1696 | { | |
1697 | /* Make C the default language */ | |
1698 | lang = language_c; | |
c906108c | 1699 | } |
ccefe4c4 TT |
1700 | |
1701 | set_language (lang); | |
1702 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1703 | } |
1704 | ||
cb2f3a29 MK |
1705 | /* Open the file specified by NAME and hand it off to BFD for |
1706 | preliminary analysis. Return a newly initialized bfd *, which | |
1707 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1708 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1709 | |
192b62ce | 1710 | gdb_bfd_ref_ptr |
97a41605 | 1711 | symfile_bfd_open (const char *name) |
c906108c | 1712 | { |
97a41605 | 1713 | int desc = -1; |
c906108c | 1714 | |
e0cc99a6 | 1715 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1716 | if (!is_target_filename (name)) |
f1838a98 | 1717 | { |
ee0c3293 | 1718 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1719 | |
97a41605 GB |
1720 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1721 | desc = openp (getenv ("PATH"), | |
1722 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1723 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1724 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1725 | if (desc < 0) |
1726 | { | |
ee0c3293 | 1727 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1728 | |
ee0c3293 | 1729 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1730 | desc = openp (getenv ("PATH"), |
1731 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1732 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1733 | } | |
c906108c | 1734 | #endif |
97a41605 | 1735 | if (desc < 0) |
ee0c3293 | 1736 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1737 | |
e0cc99a6 | 1738 | name = absolute_name.get (); |
97a41605 | 1739 | } |
c906108c | 1740 | |
192b62ce TT |
1741 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1742 | if (sym_bfd == NULL) | |
faab9922 JK |
1743 | error (_("`%s': can't open to read symbols: %s."), name, |
1744 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1745 | |
192b62ce TT |
1746 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1747 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1748 | |
192b62ce TT |
1749 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1750 | error (_("`%s': can't read symbols: %s."), name, | |
1751 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1752 | |
1753 | return sym_bfd; | |
c906108c SS |
1754 | } |
1755 | ||
cb2f3a29 MK |
1756 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1757 | the section was not found. */ | |
1758 | ||
0e931cf0 | 1759 | int |
a121b7c1 | 1760 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1761 | { |
1762 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1763 | |
0e931cf0 JB |
1764 | if (sect) |
1765 | return sect->index; | |
1766 | else | |
1767 | return -1; | |
1768 | } | |
1769 | ||
c256e171 DE |
1770 | /* Link SF into the global symtab_fns list. |
1771 | FLAVOUR is the file format that SF handles. | |
1772 | Called on startup by the _initialize routine in each object file format | |
1773 | reader, to register information about each format the reader is prepared | |
1774 | to handle. */ | |
c906108c SS |
1775 | |
1776 | void | |
c256e171 | 1777 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1778 | { |
905014d7 | 1779 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1780 | } |
1781 | ||
cb2f3a29 MK |
1782 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1783 | either returns or calls error(). The result is an initialized | |
1784 | struct sym_fns in the objfile structure, that contains cached | |
1785 | information about the symbol file. */ | |
c906108c | 1786 | |
00b5771c | 1787 | static const struct sym_fns * |
31d99776 | 1788 | find_sym_fns (bfd *abfd) |
c906108c | 1789 | { |
31d99776 | 1790 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1791 | |
75245b24 MS |
1792 | if (our_flavour == bfd_target_srec_flavour |
1793 | || our_flavour == bfd_target_ihex_flavour | |
1794 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1795 | return NULL; /* No symbols. */ |
75245b24 | 1796 | |
905014d7 SM |
1797 | for (const registered_sym_fns &rsf : symtab_fns) |
1798 | if (our_flavour == rsf.sym_flavour) | |
1799 | return rsf.sym_fns; | |
cb2f3a29 | 1800 | |
8a3fe4f8 | 1801 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1802 | bfd_get_target (abfd)); |
c906108c SS |
1803 | } |
1804 | \f | |
cb2f3a29 | 1805 | |
c906108c SS |
1806 | /* This function runs the load command of our current target. */ |
1807 | ||
1808 | static void | |
5fed81ff | 1809 | load_command (const char *arg, int from_tty) |
c906108c | 1810 | { |
e5cc9f32 JB |
1811 | dont_repeat (); |
1812 | ||
4487aabf PA |
1813 | /* The user might be reloading because the binary has changed. Take |
1814 | this opportunity to check. */ | |
1815 | reopen_exec_file (); | |
1816 | reread_symbols (); | |
1817 | ||
b577b6af | 1818 | std::string temp; |
c906108c | 1819 | if (arg == NULL) |
1986bccd | 1820 | { |
b577b6af | 1821 | const char *parg, *prev; |
1986bccd | 1822 | |
b577b6af | 1823 | arg = get_exec_file (1); |
1986bccd | 1824 | |
b577b6af TT |
1825 | /* We may need to quote this string so buildargv can pull it |
1826 | apart. */ | |
1827 | prev = parg = arg; | |
1986bccd AS |
1828 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1829 | { | |
b577b6af TT |
1830 | temp.append (prev, parg - prev); |
1831 | prev = parg++; | |
1832 | temp.push_back ('\\'); | |
1986bccd | 1833 | } |
b577b6af TT |
1834 | /* If we have not copied anything yet, then we didn't see a |
1835 | character to quote, and we can just leave ARG unchanged. */ | |
1836 | if (!temp.empty ()) | |
1986bccd | 1837 | { |
b577b6af TT |
1838 | temp.append (prev); |
1839 | arg = temp.c_str (); | |
1986bccd AS |
1840 | } |
1841 | } | |
1842 | ||
c906108c | 1843 | target_load (arg, from_tty); |
2889e661 JB |
1844 | |
1845 | /* After re-loading the executable, we don't really know which | |
1846 | overlays are mapped any more. */ | |
1847 | overlay_cache_invalid = 1; | |
c906108c SS |
1848 | } |
1849 | ||
1850 | /* This version of "load" should be usable for any target. Currently | |
1851 | it is just used for remote targets, not inftarg.c or core files, | |
1852 | on the theory that only in that case is it useful. | |
1853 | ||
1854 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1855 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1856 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1857 | performance compares. */ | |
917317f4 | 1858 | |
917317f4 JM |
1859 | static int validate_download = 0; |
1860 | ||
e4f9b4d5 MS |
1861 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1862 | ||
1863 | static void | |
1864 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1865 | { | |
19ba03f4 | 1866 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1867 | |
fd361982 | 1868 | *sum += bfd_section_size (asec); |
e4f9b4d5 MS |
1869 | } |
1870 | ||
a76d924d | 1871 | /* Opaque data for load_progress. */ |
55089490 TT |
1872 | struct load_progress_data |
1873 | { | |
a76d924d | 1874 | /* Cumulative data. */ |
55089490 TT |
1875 | unsigned long write_count = 0; |
1876 | unsigned long data_count = 0; | |
1877 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1878 | }; |
1879 | ||
1880 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1881 | struct load_progress_section_data |
1882 | { | |
1883 | load_progress_section_data (load_progress_data *cumulative_, | |
1884 | const char *section_name_, ULONGEST section_size_, | |
1885 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1886 | : cumulative (cumulative_), section_name (section_name_), | |
1887 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1888 | {} | |
1889 | ||
a76d924d | 1890 | struct load_progress_data *cumulative; |
cf7a04e8 | 1891 | |
a76d924d | 1892 | /* Per-section data. */ |
cf7a04e8 | 1893 | const char *section_name; |
55089490 | 1894 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1895 | ULONGEST section_size; |
1896 | CORE_ADDR lma; | |
1897 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1898 | }; |
1899 | ||
55089490 TT |
1900 | /* Opaque data for load_section_callback. */ |
1901 | struct load_section_data | |
1902 | { | |
1903 | load_section_data (load_progress_data *progress_data_) | |
1904 | : progress_data (progress_data_) | |
1905 | {} | |
1906 | ||
1907 | ~load_section_data () | |
1908 | { | |
1909 | for (auto &&request : requests) | |
1910 | { | |
1911 | xfree (request.data); | |
1912 | delete ((load_progress_section_data *) request.baton); | |
1913 | } | |
1914 | } | |
1915 | ||
1916 | CORE_ADDR load_offset = 0; | |
1917 | struct load_progress_data *progress_data; | |
1918 | std::vector<struct memory_write_request> requests; | |
1919 | }; | |
1920 | ||
a76d924d | 1921 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1922 | |
1923 | static void | |
1924 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1925 | { | |
19ba03f4 SM |
1926 | struct load_progress_section_data *args |
1927 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1928 | struct load_progress_data *totals; |
1929 | ||
1930 | if (args == NULL) | |
1931 | /* Writing padding data. No easy way to get at the cumulative | |
1932 | stats, so just ignore this. */ | |
1933 | return; | |
1934 | ||
1935 | totals = args->cumulative; | |
1936 | ||
1937 | if (bytes == 0 && args->section_sent == 0) | |
1938 | { | |
1939 | /* The write is just starting. Let the user know we've started | |
1940 | this section. */ | |
112e8700 SM |
1941 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1942 | args->section_name, | |
1943 | hex_string (args->section_size), | |
1944 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1945 | return; |
1946 | } | |
cf7a04e8 DJ |
1947 | |
1948 | if (validate_download) | |
1949 | { | |
1950 | /* Broken memories and broken monitors manifest themselves here | |
1951 | when bring new computers to life. This doubles already slow | |
1952 | downloads. */ | |
1953 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1954 | might add a verify_memory() method to the target vector and | |
1955 | then use that. remote.c could implement that method using | |
1956 | the ``qCRC'' packet. */ | |
0efef640 | 1957 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1958 | |
0efef640 | 1959 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1960 | error (_("Download verify read failed at %s"), |
f5656ead | 1961 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1962 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1963 | error (_("Download verify compare failed at %s"), |
f5656ead | 1964 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1965 | } |
a76d924d | 1966 | totals->data_count += bytes; |
cf7a04e8 DJ |
1967 | args->lma += bytes; |
1968 | args->buffer += bytes; | |
a76d924d | 1969 | totals->write_count += 1; |
cf7a04e8 | 1970 | args->section_sent += bytes; |
522002f9 | 1971 | if (check_quit_flag () |
cf7a04e8 DJ |
1972 | || (deprecated_ui_load_progress_hook != NULL |
1973 | && deprecated_ui_load_progress_hook (args->section_name, | |
1974 | args->section_sent))) | |
1975 | error (_("Canceled the download")); | |
1976 | ||
1977 | if (deprecated_show_load_progress != NULL) | |
1978 | deprecated_show_load_progress (args->section_name, | |
1979 | args->section_sent, | |
1980 | args->section_size, | |
a76d924d DJ |
1981 | totals->data_count, |
1982 | totals->total_size); | |
cf7a04e8 DJ |
1983 | } |
1984 | ||
e4f9b4d5 MS |
1985 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1986 | ||
1987 | static void | |
1988 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1989 | { | |
19ba03f4 | 1990 | struct load_section_data *args = (struct load_section_data *) data; |
fd361982 AM |
1991 | bfd_size_type size = bfd_section_size (asec); |
1992 | const char *sect_name = bfd_section_name (asec); | |
e4f9b4d5 | 1993 | |
fd361982 | 1994 | if ((bfd_section_flags (asec) & SEC_LOAD) == 0) |
cf7a04e8 | 1995 | return; |
e4f9b4d5 | 1996 | |
cf7a04e8 DJ |
1997 | if (size == 0) |
1998 | return; | |
e4f9b4d5 | 1999 | |
fd361982 | 2000 | ULONGEST begin = bfd_section_lma (asec) + args->load_offset; |
55089490 TT |
2001 | ULONGEST end = begin + size; |
2002 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 2003 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 2004 | |
55089490 TT |
2005 | load_progress_section_data *section_data |
2006 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
2007 | begin, buffer); | |
cf7a04e8 | 2008 | |
55089490 | 2009 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
2010 | } |
2011 | ||
dcb07cfa PA |
2012 | static void print_transfer_performance (struct ui_file *stream, |
2013 | unsigned long data_count, | |
2014 | unsigned long write_count, | |
2015 | std::chrono::steady_clock::duration d); | |
2016 | ||
854f6088 SM |
2017 | /* See symfile.h. */ |
2018 | ||
c906108c | 2019 | void |
9cbe5fff | 2020 | generic_load (const char *args, int from_tty) |
c906108c | 2021 | { |
a76d924d | 2022 | struct load_progress_data total_progress; |
55089490 | 2023 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2024 | struct ui_out *uiout = current_uiout; |
a76d924d | 2025 | |
d1a41061 PP |
2026 | if (args == NULL) |
2027 | error_no_arg (_("file to load")); | |
1986bccd | 2028 | |
773a1edc | 2029 | gdb_argv argv (args); |
1986bccd | 2030 | |
ee0c3293 | 2031 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2032 | |
2033 | if (argv[1] != NULL) | |
917317f4 | 2034 | { |
f698ca8e | 2035 | const char *endptr; |
ba5f2f8a | 2036 | |
f698ca8e | 2037 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2038 | |
2039 | /* If the last word was not a valid number then | |
2040 | treat it as a file name with spaces in. */ | |
2041 | if (argv[1] == endptr) | |
2042 | error (_("Invalid download offset:%s."), argv[1]); | |
2043 | ||
2044 | if (argv[2] != NULL) | |
2045 | error (_("Too many parameters.")); | |
917317f4 | 2046 | } |
c906108c | 2047 | |
c378eb4e | 2048 | /* Open the file for loading. */ |
ee0c3293 | 2049 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2050 | if (loadfile_bfd == NULL) |
ee0c3293 | 2051 | perror_with_name (filename.get ()); |
917317f4 | 2052 | |
192b62ce | 2053 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2054 | { |
ee0c3293 | 2055 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2056 | bfd_errmsg (bfd_get_error ())); |
2057 | } | |
c5aa993b | 2058 | |
192b62ce | 2059 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2060 | (void *) &total_progress.total_size); |
2061 | ||
192b62ce | 2062 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2063 | |
dcb07cfa PA |
2064 | using namespace std::chrono; |
2065 | ||
2066 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2067 | |
a76d924d DJ |
2068 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2069 | load_progress) != 0) | |
2070 | error (_("Load failed")); | |
c906108c | 2071 | |
dcb07cfa | 2072 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2073 | |
55089490 | 2074 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2075 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2076 | uiout->text ("Start address "); |
ca8d69be | 2077 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2078 | uiout->text (", load size "); |
1f77b012 | 2079 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2080 | uiout->text ("\n"); |
fb14de7b | 2081 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2082 | |
38963c97 DJ |
2083 | /* Reset breakpoints, now that we have changed the load image. For |
2084 | instance, breakpoints may have been set (or reset, by | |
2085 | post_create_inferior) while connected to the target but before we | |
2086 | loaded the program. In that case, the prologue analyzer could | |
2087 | have read instructions from the target to find the right | |
2088 | breakpoint locations. Loading has changed the contents of that | |
2089 | memory. */ | |
2090 | ||
2091 | breakpoint_re_set (); | |
2092 | ||
a76d924d DJ |
2093 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2094 | total_progress.write_count, | |
dcb07cfa | 2095 | end_time - start_time); |
c906108c SS |
2096 | } |
2097 | ||
dcb07cfa PA |
2098 | /* Report on STREAM the performance of a memory transfer operation, |
2099 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2100 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2101 | that information is not available. TIME is how long the operation | |
2102 | lasted. */ | |
c906108c | 2103 | |
dcb07cfa | 2104 | static void |
d9fcf2fb | 2105 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2106 | unsigned long data_count, |
2107 | unsigned long write_count, | |
dcb07cfa | 2108 | std::chrono::steady_clock::duration time) |
917317f4 | 2109 | { |
dcb07cfa | 2110 | using namespace std::chrono; |
79a45e25 | 2111 | struct ui_out *uiout = current_uiout; |
2b71414d | 2112 | |
dcb07cfa | 2113 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2114 | |
112e8700 | 2115 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2116 | if (ms.count () > 0) |
8b93c638 | 2117 | { |
dcb07cfa | 2118 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2119 | |
112e8700 | 2120 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2121 | { |
1f77b012 | 2122 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2123 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2124 | } |
2125 | else if (rate < 1024) | |
2126 | { | |
1f77b012 | 2127 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2128 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2129 | } |
2130 | else | |
2131 | { | |
1f77b012 | 2132 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2133 | uiout->text (" KB/sec"); |
9f43d28c | 2134 | } |
8b93c638 JM |
2135 | } |
2136 | else | |
2137 | { | |
1f77b012 | 2138 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2139 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2140 | } |
2141 | if (write_count > 0) | |
2142 | { | |
112e8700 | 2143 | uiout->text (", "); |
1f77b012 | 2144 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2145 | uiout->text (" bytes/write"); |
8b93c638 | 2146 | } |
112e8700 | 2147 | uiout->text (".\n"); |
c906108c SS |
2148 | } |
2149 | ||
291f9a96 PT |
2150 | /* Add an OFFSET to the start address of each section in OBJF, except |
2151 | sections that were specified in ADDRS. */ | |
2152 | ||
2153 | static void | |
2154 | set_objfile_default_section_offset (struct objfile *objf, | |
2155 | const section_addr_info &addrs, | |
2156 | CORE_ADDR offset) | |
2157 | { | |
2158 | /* Add OFFSET to all sections by default. */ | |
6a053cb1 | 2159 | section_offsets offsets (objf->section_offsets.size (), offset); |
291f9a96 PT |
2160 | |
2161 | /* Create sorted lists of all sections in ADDRS as well as all | |
2162 | sections in OBJF. */ | |
2163 | ||
2164 | std::vector<const struct other_sections *> addrs_sorted | |
2165 | = addrs_section_sort (addrs); | |
2166 | ||
2167 | section_addr_info objf_addrs | |
2168 | = build_section_addr_info_from_objfile (objf); | |
2169 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2170 | = addrs_section_sort (objf_addrs); | |
2171 | ||
2172 | /* Walk the BFD section list, and if a matching section is found in | |
2173 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2174 | unchanged. | |
2175 | ||
2176 | Note that both lists may contain multiple sections with the same | |
2177 | name, and then the sections from ADDRS are matched in BFD order | |
2178 | (thanks to sectindex). */ | |
2179 | ||
2180 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2181 | = addrs_sorted.begin (); | |
ff27d073 | 2182 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2183 | { |
2184 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2185 | int cmp = -1; | |
2186 | ||
2187 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2188 | { | |
2189 | const struct other_sections *sect = *addrs_sorted_iter; | |
2190 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2191 | cmp = strcmp (sect_name, objf_name); | |
2192 | if (cmp <= 0) | |
2193 | ++addrs_sorted_iter; | |
2194 | } | |
2195 | ||
2196 | if (cmp == 0) | |
6a053cb1 | 2197 | offsets[objf_sect->sectindex] = 0; |
291f9a96 PT |
2198 | } |
2199 | ||
2200 | /* Apply the new section offsets. */ | |
6a053cb1 | 2201 | objfile_relocate (objf, offsets); |
291f9a96 PT |
2202 | } |
2203 | ||
c906108c SS |
2204 | /* This function allows the addition of incrementally linked object files. |
2205 | It does not modify any state in the target, only in the debugger. */ | |
2206 | ||
c906108c | 2207 | static void |
2cf311eb | 2208 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2209 | { |
5af949e3 | 2210 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2211 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2212 | char *arg; |
2acceee2 | 2213 | int argcnt = 0; |
76ad5e1e | 2214 | struct objfile *objf; |
b15cc25c PA |
2215 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2216 | symfile_add_flags add_flags = 0; | |
2217 | ||
2218 | if (from_tty) | |
2219 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2220 | |
a39a16c4 | 2221 | struct sect_opt |
2acceee2 | 2222 | { |
a121b7c1 PA |
2223 | const char *name; |
2224 | const char *value; | |
a39a16c4 | 2225 | }; |
db162d44 | 2226 | |
40fc416f SDJ |
2227 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2228 | bool stop_processing_options = false; | |
291f9a96 | 2229 | CORE_ADDR offset = 0; |
c5aa993b | 2230 | |
c906108c SS |
2231 | dont_repeat (); |
2232 | ||
2233 | if (args == NULL) | |
8a3fe4f8 | 2234 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2235 | |
40fc416f | 2236 | bool seen_addr = false; |
291f9a96 | 2237 | bool seen_offset = false; |
773a1edc | 2238 | gdb_argv argv (args); |
db162d44 | 2239 | |
5b96932b AS |
2240 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2241 | { | |
40fc416f | 2242 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2243 | { |
40fc416f | 2244 | if (filename == NULL) |
41dc8db8 | 2245 | { |
40fc416f SDJ |
2246 | /* First non-option argument is always the filename. */ |
2247 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2248 | } |
40fc416f | 2249 | else if (!seen_addr) |
41dc8db8 | 2250 | { |
40fc416f SDJ |
2251 | /* The second non-option argument is always the text |
2252 | address at which to load the program. */ | |
2253 | sect_opts[0].value = arg; | |
2254 | seen_addr = true; | |
41dc8db8 MB |
2255 | } |
2256 | else | |
02ca603a | 2257 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2258 | } |
40fc416f SDJ |
2259 | else if (strcmp (arg, "-readnow") == 0) |
2260 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2261 | else if (strcmp (arg, "-readnever") == 0) |
2262 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2263 | else if (strcmp (arg, "-s") == 0) |
2264 | { | |
2265 | if (argv[argcnt + 1] == NULL) | |
2266 | error (_("Missing section name after \"-s\"")); | |
2267 | else if (argv[argcnt + 2] == NULL) | |
2268 | error (_("Missing section address after \"-s\"")); | |
2269 | ||
2270 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2271 | ||
2272 | sect_opts.push_back (sect); | |
2273 | argcnt += 2; | |
2274 | } | |
291f9a96 PT |
2275 | else if (strcmp (arg, "-o") == 0) |
2276 | { | |
2277 | arg = argv[++argcnt]; | |
2278 | if (arg == NULL) | |
2279 | error (_("Missing argument to -o")); | |
2280 | ||
2281 | offset = parse_and_eval_address (arg); | |
2282 | seen_offset = true; | |
2283 | } | |
40fc416f SDJ |
2284 | else if (strcmp (arg, "--") == 0) |
2285 | stop_processing_options = true; | |
2286 | else | |
2287 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2288 | } |
c906108c | 2289 | |
40fc416f SDJ |
2290 | if (filename == NULL) |
2291 | error (_("You must provide a filename to be loaded.")); | |
2292 | ||
97cbe998 SDJ |
2293 | validate_readnow_readnever (flags); |
2294 | ||
c378eb4e | 2295 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2296 | a sect_addr_info structure to be passed around to other |
2297 | functions. We have to split this up into separate print | |
bb599908 | 2298 | statements because hex_string returns a local static |
c378eb4e | 2299 | string. */ |
5417f6dc | 2300 | |
ed6dfe51 | 2301 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2302 | filename.get ()); |
37e136b1 | 2303 | section_addr_info section_addrs; |
ed6dfe51 PT |
2304 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2305 | if (!seen_addr) | |
2306 | ++it; | |
2307 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2308 | { |
db162d44 | 2309 | CORE_ADDR addr; |
ed6dfe51 PT |
2310 | const char *val = it->value; |
2311 | const char *sec = it->name; | |
5417f6dc | 2312 | |
ed6dfe51 PT |
2313 | if (section_addrs.empty ()) |
2314 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2315 | addr = parse_and_eval_address (val); |
db162d44 | 2316 | |
db162d44 | 2317 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2318 | entered on the command line. Every array element is |
2319 | assigned an ascending section index to preserve the above | |
2320 | order over an unstable sorting algorithm. This dummy | |
2321 | index is not used for any other purpose. | |
2322 | */ | |
2323 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2324 | printf_filtered ("\t%s_addr = %s\n", sec, |
2325 | paddress (gdbarch, addr)); | |
db162d44 | 2326 | |
5417f6dc | 2327 | /* The object's sections are initialized when a |
db162d44 | 2328 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2329 | This happens in reread_symbols. |
db162d44 EZ |
2330 | At this point, we don't know what file type this is, |
2331 | so we can't determine what section names are valid. */ | |
2acceee2 | 2332 | } |
291f9a96 PT |
2333 | if (seen_offset) |
2334 | printf_unfiltered (_("%s offset by %s\n"), | |
2335 | (section_addrs.empty () | |
2336 | ? _(" with all sections") | |
2337 | : _("with other sections")), | |
2338 | paddress (gdbarch, offset)); | |
2339 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2340 | printf_unfiltered ("\n"); |
db162d44 | 2341 | |
2acceee2 | 2342 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2343 | error (_("Not confirmed.")); |
c906108c | 2344 | |
37e136b1 TT |
2345 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2346 | flags); | |
f5686554 TT |
2347 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2348 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2349 | filename.get ()); | |
76ad5e1e | 2350 | |
291f9a96 PT |
2351 | if (seen_offset) |
2352 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2353 | ||
76ad5e1e | 2354 | add_target_sections_of_objfile (objf); |
c906108c SS |
2355 | |
2356 | /* Getting new symbols may change our opinion about what is | |
2357 | frameless. */ | |
2358 | reinit_frame_cache (); | |
2359 | } | |
2360 | \f | |
70992597 | 2361 | |
63644780 NB |
2362 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2363 | ||
2364 | static void | |
2cf311eb | 2365 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2366 | { |
63644780 | 2367 | struct objfile *objf = NULL; |
63644780 | 2368 | struct program_space *pspace = current_program_space; |
63644780 NB |
2369 | |
2370 | dont_repeat (); | |
2371 | ||
2372 | if (args == NULL) | |
2373 | error (_("remove-symbol-file: no symbol file provided")); | |
2374 | ||
773a1edc | 2375 | gdb_argv argv (args); |
63644780 NB |
2376 | |
2377 | if (strcmp (argv[0], "-a") == 0) | |
2378 | { | |
2379 | /* Interpret the next argument as an address. */ | |
2380 | CORE_ADDR addr; | |
2381 | ||
2382 | if (argv[1] == NULL) | |
2383 | error (_("Missing address argument")); | |
2384 | ||
2385 | if (argv[2] != NULL) | |
2386 | error (_("Junk after %s"), argv[1]); | |
2387 | ||
2388 | addr = parse_and_eval_address (argv[1]); | |
2389 | ||
2030c079 | 2390 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2391 | { |
aed57c53 TT |
2392 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2393 | && (objfile->flags & OBJF_SHARED) != 0 | |
2394 | && objfile->pspace == pspace | |
2395 | && is_addr_in_objfile (addr, objfile)) | |
2396 | { | |
2397 | objf = objfile; | |
2398 | break; | |
2399 | } | |
63644780 NB |
2400 | } |
2401 | } | |
2402 | else if (argv[0] != NULL) | |
2403 | { | |
2404 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2405 | |
2406 | if (argv[1] != NULL) | |
2407 | error (_("Junk after %s"), argv[0]); | |
2408 | ||
ee0c3293 | 2409 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2410 | |
2030c079 | 2411 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2412 | { |
aed57c53 TT |
2413 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2414 | && (objfile->flags & OBJF_SHARED) != 0 | |
2415 | && objfile->pspace == pspace | |
2416 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2417 | { | |
2418 | objf = objfile; | |
2419 | break; | |
2420 | } | |
63644780 NB |
2421 | } |
2422 | } | |
2423 | ||
2424 | if (objf == NULL) | |
2425 | error (_("No symbol file found")); | |
2426 | ||
2427 | if (from_tty | |
2428 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2429 | objfile_name (objf))) | |
2430 | error (_("Not confirmed.")); | |
2431 | ||
268e4f09 | 2432 | objf->unlink (); |
63644780 | 2433 | clear_symtab_users (0); |
63644780 NB |
2434 | } |
2435 | ||
c906108c | 2436 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2437 | |
c906108c | 2438 | void |
fba45db2 | 2439 | reread_symbols (void) |
c906108c | 2440 | { |
c906108c | 2441 | long new_modtime; |
c906108c SS |
2442 | struct stat new_statbuf; |
2443 | int res; | |
4c404b8b | 2444 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2445 | |
bf227d61 | 2446 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2447 | { |
9cce227f TG |
2448 | if (objfile->obfd == NULL) |
2449 | continue; | |
2450 | ||
2451 | /* Separate debug objfiles are handled in the main objfile. */ | |
2452 | if (objfile->separate_debug_objfile_backlink) | |
2453 | continue; | |
2454 | ||
02aeec7b JB |
2455 | /* If this object is from an archive (what you usually create with |
2456 | `ar', often called a `static library' on most systems, though | |
2457 | a `shared library' on AIX is also an archive), then you should | |
2458 | stat on the archive name, not member name. */ | |
9cce227f TG |
2459 | if (objfile->obfd->my_archive) |
2460 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2461 | else | |
4262abfb | 2462 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2463 | if (res != 0) |
2464 | { | |
c378eb4e | 2465 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2466 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2467 | objfile_name (objfile)); | |
9cce227f TG |
2468 | continue; |
2469 | } | |
2470 | new_modtime = new_statbuf.st_mtime; | |
2471 | if (new_modtime != objfile->mtime) | |
2472 | { | |
22068491 TT |
2473 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2474 | objfile_name (objfile)); | |
9cce227f TG |
2475 | |
2476 | /* There are various functions like symbol_file_add, | |
2477 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2478 | appear to do what we want. But they have various other | |
2479 | effects which we *don't* want. So we just do stuff | |
2480 | ourselves. We don't worry about mapped files (for one thing, | |
2481 | any mapped file will be out of date). */ | |
2482 | ||
2483 | /* If we get an error, blow away this objfile (not sure if | |
2484 | that is the correct response for things like shared | |
2485 | libraries). */ | |
268e4f09 | 2486 | objfile_up objfile_holder (objfile); |
ed2b3126 | 2487 | |
9cce227f | 2488 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2489 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2490 | |
0ba1096a KT |
2491 | if (exec_bfd != NULL |
2492 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2493 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2494 | { |
2495 | /* Reload EXEC_BFD without asking anything. */ | |
2496 | ||
2497 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2498 | } | |
2499 | ||
f6eeced0 JK |
2500 | /* Keep the calls order approx. the same as in free_objfile. */ |
2501 | ||
2502 | /* Free the separate debug objfiles. It will be | |
2503 | automatically recreated by sym_read. */ | |
2504 | free_objfile_separate_debug (objfile); | |
2505 | ||
7b71fc97 L |
2506 | /* Clear the stale source cache. */ |
2507 | forget_cached_source_info (); | |
2508 | ||
f6eeced0 JK |
2509 | /* Remove any references to this objfile in the global |
2510 | value lists. */ | |
2511 | preserve_values (objfile); | |
2512 | ||
2513 | /* Nuke all the state that we will re-read. Much of the following | |
2514 | code which sets things to NULL really is necessary to tell | |
2515 | other parts of GDB that there is nothing currently there. | |
2516 | ||
2517 | Try to keep the freeing order compatible with free_objfile. */ | |
2518 | ||
2519 | if (objfile->sf != NULL) | |
2520 | { | |
2521 | (*objfile->sf->sym_finish) (objfile); | |
2522 | } | |
2523 | ||
2524 | clear_objfile_data (objfile); | |
2525 | ||
e1507e95 | 2526 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2527 | { |
192b62ce | 2528 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
b16c44de | 2529 | const char *obfd_filename; |
a4453b7e TT |
2530 | |
2531 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2532 | /* Open the new BFD before freeing the old one, so that | |
2533 | the filename remains live. */ | |
192b62ce TT |
2534 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2535 | objfile->obfd = temp.release (); | |
e1507e95 | 2536 | if (objfile->obfd == NULL) |
192b62ce | 2537 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2538 | } |
2539 | ||
c0c9f665 | 2540 | std::string original_name = objfile->original_name; |
24ba069a | 2541 | |
9cce227f TG |
2542 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2543 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2544 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2545 | bfd_errmsg (bfd_get_error ())); |
2546 | ||
6d6a12bf | 2547 | objfile->reset_psymtabs (); |
41664b45 DG |
2548 | |
2549 | /* NB: after this call to obstack_free, objfiles_changed | |
2550 | will need to be called (see discussion below). */ | |
9cce227f TG |
2551 | obstack_free (&objfile->objfile_obstack, 0); |
2552 | objfile->sections = NULL; | |
43f3e411 | 2553 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2554 | objfile->template_symbols = NULL; |
cf250e36 | 2555 | objfile->static_links.reset (nullptr); |
9cce227f | 2556 | |
9cce227f TG |
2557 | /* obstack_init also initializes the obstack so it is |
2558 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2559 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2560 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2561 | |
846060df JB |
2562 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2563 | data on the objfile's obstack (if sharing data across | |
2564 | multiple users is not possible), so it's important to | |
2565 | do it *after* the obstack has been initialized. */ | |
2566 | set_objfile_per_bfd (objfile); | |
2567 | ||
224c3ddb | 2568 | objfile->original_name |
efba19b0 | 2569 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2570 | |
779bd270 DE |
2571 | /* Reset the sym_fns pointer. The ELF reader can change it |
2572 | based on whether .gdb_index is present, and we need it to | |
2573 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2574 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2575 | |
d82ea6a8 | 2576 | build_objfile_section_table (objfile); |
9cce227f | 2577 | |
9cce227f TG |
2578 | /* What the hell is sym_new_init for, anyway? The concept of |
2579 | distinguishing between the main file and additional files | |
2580 | in this way seems rather dubious. */ | |
2581 | if (objfile == symfile_objfile) | |
c906108c | 2582 | { |
9cce227f | 2583 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2584 | } |
9cce227f TG |
2585 | |
2586 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2587 | clear_complaints (); |
608e2dbb TT |
2588 | |
2589 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2590 | |
2591 | /* We are about to read new symbols and potentially also | |
2592 | DWARF information. Some targets may want to pass addresses | |
2593 | read from DWARF DIE's through an adjustment function before | |
2594 | saving them, like MIPS, which may call into | |
2595 | "find_pc_section". When called, that function will make | |
2596 | use of per-objfile program space data. | |
2597 | ||
2598 | Since we discarded our section information above, we have | |
2599 | dangling pointers in the per-objfile program space data | |
2600 | structure. Force GDB to update the section mapping | |
2601 | information by letting it know the objfile has changed, | |
2602 | making the dangling pointers point to correct data | |
2603 | again. */ | |
2604 | ||
2605 | objfiles_changed (); | |
2606 | ||
608e2dbb | 2607 | read_symbols (objfile, 0); |
b11896a5 | 2608 | |
9cce227f | 2609 | if (!objfile_has_symbols (objfile)) |
c906108c | 2610 | { |
9cce227f | 2611 | wrap_here (""); |
22068491 | 2612 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2613 | wrap_here (""); |
c5aa993b | 2614 | } |
9cce227f TG |
2615 | |
2616 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2617 | clear_complaints (); |
9cce227f TG |
2618 | |
2619 | /* Getting new symbols may change our opinion about what is | |
2620 | frameless. */ | |
2621 | ||
2622 | reinit_frame_cache (); | |
2623 | ||
2624 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2625 | objfile_holder.release (); |
286526c1 | 2626 | defer_clear_users.release (); |
9cce227f TG |
2627 | |
2628 | /* If the mtime has changed between the time we set new_modtime | |
2629 | and now, we *want* this to be out of date, so don't call stat | |
2630 | again now. */ | |
2631 | objfile->mtime = new_modtime; | |
9cce227f | 2632 | init_entry_point_info (objfile); |
4ac39b97 | 2633 | |
4c404b8b | 2634 | new_objfiles.push_back (objfile); |
c906108c SS |
2635 | } |
2636 | } | |
c906108c | 2637 | |
4c404b8b | 2638 | if (!new_objfiles.empty ()) |
ea53e89f | 2639 | { |
c1e56572 | 2640 | clear_symtab_users (0); |
4ac39b97 JK |
2641 | |
2642 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2643 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2644 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2645 | for (auto iter : new_objfiles) |
c486b610 | 2646 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2647 | |
ea53e89f JB |
2648 | /* At least one objfile has changed, so we can consider that |
2649 | the executable we're debugging has changed too. */ | |
76727919 | 2650 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2651 | } |
c906108c | 2652 | } |
c906108c SS |
2653 | \f |
2654 | ||
593e3209 | 2655 | struct filename_language |
c5aa993b | 2656 | { |
593e3209 SM |
2657 | filename_language (const std::string &ext_, enum language lang_) |
2658 | : ext (ext_), lang (lang_) | |
2659 | {} | |
3fcf0b0d | 2660 | |
593e3209 SM |
2661 | std::string ext; |
2662 | enum language lang; | |
2663 | }; | |
c906108c | 2664 | |
593e3209 | 2665 | static std::vector<filename_language> filename_language_table; |
c906108c | 2666 | |
56618e20 TT |
2667 | /* See symfile.h. */ |
2668 | ||
2669 | void | |
2670 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2671 | { |
593e3209 | 2672 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2673 | } |
2674 | ||
2675 | static char *ext_args; | |
920d2a44 AC |
2676 | static void |
2677 | show_ext_args (struct ui_file *file, int from_tty, | |
2678 | struct cmd_list_element *c, const char *value) | |
2679 | { | |
3e43a32a MS |
2680 | fprintf_filtered (file, |
2681 | _("Mapping between filename extension " | |
2682 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2683 | value); |
2684 | } | |
c906108c SS |
2685 | |
2686 | static void | |
eb4c3f4a TT |
2687 | set_ext_lang_command (const char *args, |
2688 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2689 | { |
c906108c SS |
2690 | char *cp = ext_args; |
2691 | enum language lang; | |
2692 | ||
c378eb4e | 2693 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2694 | if (*cp != '.') |
8a3fe4f8 | 2695 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2696 | |
2697 | /* Find end of first arg. */ | |
c5aa993b | 2698 | while (*cp && !isspace (*cp)) |
c906108c SS |
2699 | cp++; |
2700 | ||
2701 | if (*cp == '\0') | |
3e43a32a MS |
2702 | error (_("'%s': two arguments required -- " |
2703 | "filename extension and language"), | |
c906108c SS |
2704 | ext_args); |
2705 | ||
c378eb4e | 2706 | /* Null-terminate first arg. */ |
c5aa993b | 2707 | *cp++ = '\0'; |
c906108c SS |
2708 | |
2709 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2710 | cp = skip_spaces (cp); |
c906108c SS |
2711 | |
2712 | if (*cp == '\0') | |
3e43a32a MS |
2713 | error (_("'%s': two arguments required -- " |
2714 | "filename extension and language"), | |
c906108c SS |
2715 | ext_args); |
2716 | ||
2717 | /* Lookup the language from among those we know. */ | |
2718 | lang = language_enum (cp); | |
2719 | ||
593e3209 | 2720 | auto it = filename_language_table.begin (); |
c906108c | 2721 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2722 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2723 | { |
593e3209 | 2724 | if (it->ext == ext_args) |
3fcf0b0d TT |
2725 | break; |
2726 | } | |
c906108c | 2727 | |
593e3209 | 2728 | if (it == filename_language_table.end ()) |
c906108c | 2729 | { |
c378eb4e | 2730 | /* New file extension. */ |
c906108c SS |
2731 | add_filename_language (ext_args, lang); |
2732 | } | |
2733 | else | |
2734 | { | |
c378eb4e | 2735 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2736 | |
2737 | /* if (from_tty) */ | |
2738 | /* query ("Really make files of type %s '%s'?", */ | |
2739 | /* ext_args, language_str (lang)); */ | |
2740 | ||
593e3209 | 2741 | it->lang = lang; |
c906108c SS |
2742 | } |
2743 | } | |
2744 | ||
2745 | static void | |
1d12d88f | 2746 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2747 | { |
a3f17187 | 2748 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2749 | printf_filtered ("\n\n"); |
593e3209 SM |
2750 | for (const filename_language &entry : filename_language_table) |
2751 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2752 | language_str (entry.lang)); | |
c906108c SS |
2753 | } |
2754 | ||
c906108c | 2755 | enum language |
dd786858 | 2756 | deduce_language_from_filename (const char *filename) |
c906108c | 2757 | { |
e6a959d6 | 2758 | const char *cp; |
c906108c SS |
2759 | |
2760 | if (filename != NULL) | |
2761 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2762 | { |
593e3209 SM |
2763 | for (const filename_language &entry : filename_language_table) |
2764 | if (entry.ext == cp) | |
2765 | return entry.lang; | |
3fcf0b0d | 2766 | } |
c906108c SS |
2767 | |
2768 | return language_unknown; | |
2769 | } | |
2770 | \f | |
43f3e411 DE |
2771 | /* Allocate and initialize a new symbol table. |
2772 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2773 | |
2774 | struct symtab * | |
43f3e411 | 2775 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2776 | { |
43f3e411 DE |
2777 | struct objfile *objfile = cust->objfile; |
2778 | struct symtab *symtab | |
2779 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2780 | |
19ba03f4 | 2781 | symtab->filename |
25629dfd TT |
2782 | = ((const char *) objfile->per_bfd->filename_cache.insert |
2783 | (filename, strlen (filename) + 1)); | |
c5aa993b JM |
2784 | symtab->fullname = NULL; |
2785 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2786 | |
db0fec5c DE |
2787 | /* This can be very verbose with lots of headers. |
2788 | Only print at higher debug levels. */ | |
2789 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2790 | { |
2791 | /* Be a bit clever with debugging messages, and don't print objfile | |
2792 | every time, only when it changes. */ | |
2793 | static char *last_objfile_name = NULL; | |
2794 | ||
2795 | if (last_objfile_name == NULL | |
4262abfb | 2796 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2797 | { |
2798 | xfree (last_objfile_name); | |
4262abfb | 2799 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2800 | fprintf_filtered (gdb_stdlog, |
2801 | "Creating one or more symtabs for objfile %s ...\n", | |
2802 | last_objfile_name); | |
45cfd468 | 2803 | } |
22068491 TT |
2804 | fprintf_filtered (gdb_stdlog, |
2805 | "Created symtab %s for module %s.\n", | |
2806 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2807 | } |
2808 | ||
43f3e411 DE |
2809 | /* Add it to CUST's list of symtabs. */ |
2810 | if (cust->filetabs == NULL) | |
2811 | { | |
2812 | cust->filetabs = symtab; | |
2813 | cust->last_filetab = symtab; | |
2814 | } | |
2815 | else | |
2816 | { | |
2817 | cust->last_filetab->next = symtab; | |
2818 | cust->last_filetab = symtab; | |
2819 | } | |
2820 | ||
2821 | /* Backlink to the containing compunit symtab. */ | |
2822 | symtab->compunit_symtab = cust; | |
2823 | ||
2824 | return symtab; | |
2825 | } | |
2826 | ||
2827 | /* Allocate and initialize a new compunit. | |
2828 | NAME is the name of the main source file, if there is one, or some | |
2829 | descriptive text if there are no source files. */ | |
2830 | ||
2831 | struct compunit_symtab * | |
2832 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2833 | { | |
2834 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2835 | struct compunit_symtab); | |
2836 | const char *saved_name; | |
2837 | ||
2838 | cu->objfile = objfile; | |
2839 | ||
2840 | /* The name we record here is only for display/debugging purposes. | |
2841 | Just save the basename to avoid path issues (too long for display, | |
2842 | relative vs absolute, etc.). */ | |
2843 | saved_name = lbasename (name); | |
021887d8 | 2844 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 DE |
2845 | |
2846 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2847 | ||
2848 | if (symtab_create_debug) | |
2849 | { | |
22068491 TT |
2850 | fprintf_filtered (gdb_stdlog, |
2851 | "Created compunit symtab %s for %s.\n", | |
2852 | host_address_to_string (cu), | |
2853 | cu->name); | |
43f3e411 DE |
2854 | } |
2855 | ||
2856 | return cu; | |
2857 | } | |
2858 | ||
2859 | /* Hook CU to the objfile it comes from. */ | |
2860 | ||
2861 | void | |
2862 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2863 | { | |
2864 | cu->next = cu->objfile->compunit_symtabs; | |
2865 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2866 | } |
c906108c | 2867 | \f |
c5aa993b | 2868 | |
b15cc25c PA |
2869 | /* Reset all data structures in gdb which may contain references to |
2870 | symbol table data. */ | |
c906108c SS |
2871 | |
2872 | void | |
b15cc25c | 2873 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2874 | { |
2875 | /* Someday, we should do better than this, by only blowing away | |
2876 | the things that really need to be blown. */ | |
c0501be5 DJ |
2877 | |
2878 | /* Clear the "current" symtab first, because it is no longer valid. | |
2879 | breakpoint_re_set may try to access the current symtab. */ | |
2880 | clear_current_source_symtab_and_line (); | |
2881 | ||
c906108c | 2882 | clear_displays (); |
1bfeeb0f | 2883 | clear_last_displayed_sal (); |
c906108c | 2884 | clear_pc_function_cache (); |
76727919 | 2885 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2886 | |
8756216b DP |
2887 | /* Varobj may refer to old symbols, perform a cleanup. */ |
2888 | varobj_invalidate (); | |
2889 | ||
e700d1b2 JB |
2890 | /* Now that the various caches have been cleared, we can re_set |
2891 | our breakpoints without risking it using stale data. */ | |
2892 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2893 | breakpoint_re_set (); | |
c906108c | 2894 | } |
c906108c | 2895 | \f |
c906108c SS |
2896 | /* OVERLAYS: |
2897 | The following code implements an abstraction for debugging overlay sections. | |
2898 | ||
2899 | The target model is as follows: | |
2900 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2901 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2902 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2903 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2904 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2905 | sections should be considered to be mapped from the VMA to the LMA. |
2906 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2907 | For instance, if a section has been mapped then its contents |
c5aa993b | 2908 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2909 | |
2910 | Two levels of debugger support for overlays are available. One is | |
2911 | "manual", in which the debugger relies on the user to tell it which | |
2912 | overlays are currently mapped. This level of support is | |
2913 | implemented entirely in the core debugger, and the information about | |
2914 | whether a section is mapped is kept in the objfile->obj_section table. | |
2915 | ||
2916 | The second level of support is "automatic", and is only available if | |
2917 | the target-specific code provides functionality to read the target's | |
2918 | overlay mapping table, and translate its contents for the debugger | |
2919 | (by updating the mapped state information in the obj_section tables). | |
2920 | ||
2921 | The interface is as follows: | |
c5aa993b JM |
2922 | User commands: |
2923 | overlay map <name> -- tell gdb to consider this section mapped | |
2924 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2925 | overlay list -- list the sections that GDB thinks are mapped | |
2926 | overlay read-target -- get the target's state of what's mapped | |
2927 | overlay off/manual/auto -- set overlay debugging state | |
2928 | Functional interface: | |
2929 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2930 | section, return that section. | |
5417f6dc | 2931 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2932 | the pc, either in its VMA or its LMA |
714835d5 | 2933 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2934 | section_is_overlay(sect): true if section's VMA != LMA |
2935 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2936 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2937 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2938 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2939 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2940 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2941 | either in VMA or LMA depending on whether | |
c378eb4e | 2942 | the symbol's section is currently mapped. */ |
c906108c SS |
2943 | |
2944 | /* Overlay debugging state: */ | |
2945 | ||
d874f1e2 | 2946 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2947 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2948 | |
c906108c | 2949 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2950 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2951 | SECTION is loaded at an address different from where it will "run". */ |
2952 | ||
2953 | int | |
714835d5 | 2954 | section_is_overlay (struct obj_section *section) |
c906108c | 2955 | { |
714835d5 UW |
2956 | if (overlay_debugging && section) |
2957 | { | |
714835d5 | 2958 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2959 | |
fd361982 AM |
2960 | if (bfd_section_lma (bfd_section) != 0 |
2961 | && bfd_section_lma (bfd_section) != bfd_section_vma (bfd_section)) | |
714835d5 UW |
2962 | return 1; |
2963 | } | |
c906108c SS |
2964 | |
2965 | return 0; | |
2966 | } | |
2967 | ||
2968 | /* Function: overlay_invalidate_all (void) | |
2969 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2970 | ||
2971 | static void | |
fba45db2 | 2972 | overlay_invalidate_all (void) |
c906108c | 2973 | { |
c906108c SS |
2974 | struct obj_section *sect; |
2975 | ||
2030c079 | 2976 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
2977 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
2978 | if (section_is_overlay (sect)) | |
2979 | sect->ovly_mapped = -1; | |
c906108c SS |
2980 | } |
2981 | ||
714835d5 | 2982 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2983 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2984 | |
2985 | Access to the ovly_mapped flag is restricted to this function, so | |
2986 | that we can do automatic update. If the global flag | |
2987 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2988 | overlay_invalidate_all. If the mapped state of the particular | |
2989 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2990 | ||
714835d5 UW |
2991 | int |
2992 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2993 | { |
9216df95 UW |
2994 | struct gdbarch *gdbarch; |
2995 | ||
714835d5 | 2996 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2997 | return 0; |
2998 | ||
c5aa993b | 2999 | switch (overlay_debugging) |
c906108c SS |
3000 | { |
3001 | default: | |
d874f1e2 | 3002 | case ovly_off: |
c5aa993b | 3003 | return 0; /* overlay debugging off */ |
d874f1e2 | 3004 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3005 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3006 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3007 | gdbarch = get_objfile_arch (osect->objfile); |
3008 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3009 | { |
3010 | if (overlay_cache_invalid) | |
3011 | { | |
3012 | overlay_invalidate_all (); | |
3013 | overlay_cache_invalid = 0; | |
3014 | } | |
3015 | if (osect->ovly_mapped == -1) | |
9216df95 | 3016 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3017 | } |
86a73007 | 3018 | /* fall thru */ |
d874f1e2 | 3019 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3020 | return osect->ovly_mapped == 1; |
3021 | } | |
3022 | } | |
3023 | ||
c906108c SS |
3024 | /* Function: pc_in_unmapped_range |
3025 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3026 | ||
3027 | CORE_ADDR | |
714835d5 | 3028 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3029 | { |
714835d5 UW |
3030 | if (section_is_overlay (section)) |
3031 | { | |
714835d5 | 3032 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3033 | |
714835d5 | 3034 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
fd361982 | 3035 | bfd_vma size = bfd_section_size (bfd_section); |
714835d5 UW |
3036 | CORE_ADDR offset = obj_section_offset (section); |
3037 | ||
fd361982 AM |
3038 | if (bfd_section_lma (bfd_section) + offset <= pc |
3039 | && pc < bfd_section_lma (bfd_section) + offset + size) | |
714835d5 UW |
3040 | return 1; |
3041 | } | |
c906108c | 3042 | |
c906108c SS |
3043 | return 0; |
3044 | } | |
3045 | ||
3046 | /* Function: pc_in_mapped_range | |
3047 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3048 | ||
3049 | CORE_ADDR | |
714835d5 | 3050 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3051 | { |
714835d5 UW |
3052 | if (section_is_overlay (section)) |
3053 | { | |
3054 | if (obj_section_addr (section) <= pc | |
3055 | && pc < obj_section_endaddr (section)) | |
3056 | return 1; | |
3057 | } | |
c906108c | 3058 | |
c906108c SS |
3059 | return 0; |
3060 | } | |
3061 | ||
9ec8e6a0 JB |
3062 | /* Return true if the mapped ranges of sections A and B overlap, false |
3063 | otherwise. */ | |
3b7bacac | 3064 | |
b9362cc7 | 3065 | static int |
714835d5 | 3066 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3067 | { |
714835d5 UW |
3068 | CORE_ADDR a_start = obj_section_addr (a); |
3069 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3070 | CORE_ADDR b_start = obj_section_addr (b); | |
3071 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3072 | |
3073 | return (a_start < b_end && b_start < a_end); | |
3074 | } | |
3075 | ||
c906108c SS |
3076 | /* Function: overlay_unmapped_address (PC, SECTION) |
3077 | Returns the address corresponding to PC in the unmapped (load) range. | |
3078 | May be the same as PC. */ | |
3079 | ||
3080 | CORE_ADDR | |
714835d5 | 3081 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3082 | { |
714835d5 UW |
3083 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3084 | { | |
714835d5 | 3085 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3086 | |
fd361982 AM |
3087 | return (pc + bfd_section_lma (bfd_section) |
3088 | - bfd_section_vma (bfd_section)); | |
714835d5 | 3089 | } |
c906108c SS |
3090 | |
3091 | return pc; | |
3092 | } | |
3093 | ||
3094 | /* Function: overlay_mapped_address (PC, SECTION) | |
3095 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3096 | May be the same as PC. */ | |
3097 | ||
3098 | CORE_ADDR | |
714835d5 | 3099 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3100 | { |
714835d5 UW |
3101 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3102 | { | |
714835d5 | 3103 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3104 | |
fd361982 AM |
3105 | return (pc + bfd_section_vma (bfd_section) |
3106 | - bfd_section_lma (bfd_section)); | |
714835d5 | 3107 | } |
c906108c SS |
3108 | |
3109 | return pc; | |
3110 | } | |
3111 | ||
5417f6dc | 3112 | /* Function: symbol_overlayed_address |
c906108c SS |
3113 | Return one of two addresses (relative to the VMA or to the LMA), |
3114 | depending on whether the section is mapped or not. */ | |
3115 | ||
c5aa993b | 3116 | CORE_ADDR |
714835d5 | 3117 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3118 | { |
3119 | if (overlay_debugging) | |
3120 | { | |
c378eb4e | 3121 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3122 | if (section == 0) |
3123 | return address; | |
c378eb4e MS |
3124 | /* If the symbol's section is not an overlay, just return its |
3125 | address. */ | |
c906108c SS |
3126 | if (!section_is_overlay (section)) |
3127 | return address; | |
c378eb4e | 3128 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3129 | if (section_is_mapped (section)) |
3130 | return address; | |
3131 | /* | |
3132 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3133 | * then return its LOADED address rather than its vma address!! | |
3134 | */ | |
3135 | return overlay_unmapped_address (address, section); | |
3136 | } | |
3137 | return address; | |
3138 | } | |
3139 | ||
5417f6dc | 3140 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3141 | Return the best-match overlay section for PC: |
3142 | If PC matches a mapped overlay section's VMA, return that section. | |
3143 | Else if PC matches an unmapped section's VMA, return that section. | |
3144 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3145 | ||
714835d5 | 3146 | struct obj_section * |
fba45db2 | 3147 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3148 | { |
c906108c SS |
3149 | struct obj_section *osect, *best_match = NULL; |
3150 | ||
3151 | if (overlay_debugging) | |
b631e59b | 3152 | { |
2030c079 | 3153 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3154 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3155 | if (section_is_overlay (osect)) | |
3156 | { | |
3157 | if (pc_in_mapped_range (pc, osect)) | |
3158 | { | |
3159 | if (section_is_mapped (osect)) | |
3160 | return osect; | |
3161 | else | |
3162 | best_match = osect; | |
3163 | } | |
3164 | else if (pc_in_unmapped_range (pc, osect)) | |
3165 | best_match = osect; | |
3166 | } | |
b631e59b | 3167 | } |
714835d5 | 3168 | return best_match; |
c906108c SS |
3169 | } |
3170 | ||
3171 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3172 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3173 | currently marked as MAPPED, return that section. Else return NULL. */ |
3174 | ||
714835d5 | 3175 | struct obj_section * |
fba45db2 | 3176 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3177 | { |
c906108c SS |
3178 | struct obj_section *osect; |
3179 | ||
3180 | if (overlay_debugging) | |
b631e59b | 3181 | { |
2030c079 | 3182 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3183 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3184 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3185 | return osect; | |
b631e59b | 3186 | } |
c906108c SS |
3187 | |
3188 | return NULL; | |
3189 | } | |
3190 | ||
3191 | /* Function: list_overlays_command | |
c378eb4e | 3192 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3193 | |
5d3055ad | 3194 | static void |
2cf311eb | 3195 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3196 | { |
c5aa993b | 3197 | int nmapped = 0; |
c906108c SS |
3198 | struct obj_section *osect; |
3199 | ||
3200 | if (overlay_debugging) | |
b631e59b | 3201 | { |
2030c079 | 3202 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3203 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3204 | if (section_is_mapped (osect)) | |
3205 | { | |
3206 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3207 | const char *name; | |
3208 | bfd_vma lma, vma; | |
3209 | int size; | |
3210 | ||
fd361982 AM |
3211 | vma = bfd_section_vma (osect->the_bfd_section); |
3212 | lma = bfd_section_lma (osect->the_bfd_section); | |
3213 | size = bfd_section_size (osect->the_bfd_section); | |
3214 | name = bfd_section_name (osect->the_bfd_section); | |
3b9d3ac2 TT |
3215 | |
3216 | printf_filtered ("Section %s, loaded at ", name); | |
3217 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3218 | puts_filtered (" - "); | |
3219 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3220 | printf_filtered (", mapped at "); | |
3221 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3222 | puts_filtered (" - "); | |
3223 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3224 | puts_filtered ("\n"); | |
3225 | ||
3226 | nmapped++; | |
3227 | } | |
b631e59b | 3228 | } |
c906108c | 3229 | if (nmapped == 0) |
a3f17187 | 3230 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3231 | } |
3232 | ||
3233 | /* Function: map_overlay_command | |
3234 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3235 | ||
5d3055ad | 3236 | static void |
2cf311eb | 3237 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3238 | { |
c5aa993b | 3239 | struct obj_section *sec, *sec2; |
c906108c SS |
3240 | |
3241 | if (!overlay_debugging) | |
3e43a32a MS |
3242 | error (_("Overlay debugging not enabled. Use " |
3243 | "either the 'overlay auto' or\n" | |
3244 | "the 'overlay manual' command.")); | |
c906108c SS |
3245 | |
3246 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3247 | error (_("Argument required: name of an overlay section")); |
c906108c | 3248 | |
c378eb4e | 3249 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3250 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 | 3251 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
fd361982 | 3252 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
c5aa993b | 3253 | { |
3b9d3ac2 TT |
3254 | /* Now, check to see if the section is an overlay. */ |
3255 | if (!section_is_overlay (sec)) | |
3256 | continue; /* not an overlay section */ | |
3257 | ||
3258 | /* Mark the overlay as "mapped". */ | |
3259 | sec->ovly_mapped = 1; | |
3260 | ||
3261 | /* Next, make a pass and unmap any sections that are | |
3262 | overlapped by this new section: */ | |
2030c079 | 3263 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3264 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3265 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3266 | sec2)) | |
3267 | { | |
3268 | if (info_verbose) | |
3269 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
fd361982 | 3270 | bfd_section_name (sec2->the_bfd_section)); |
3b9d3ac2 TT |
3271 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
3272 | } | |
3273 | return; | |
c5aa993b | 3274 | } |
8a3fe4f8 | 3275 | error (_("No overlay section called %s"), args); |
c906108c SS |
3276 | } |
3277 | ||
3278 | /* Function: unmap_overlay_command | |
5417f6dc | 3279 | Mark the overlay section as unmapped |
c906108c SS |
3280 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3281 | ||
5d3055ad | 3282 | static void |
2cf311eb | 3283 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3284 | { |
7a270e0c | 3285 | struct obj_section *sec = NULL; |
c906108c SS |
3286 | |
3287 | if (!overlay_debugging) | |
3e43a32a MS |
3288 | error (_("Overlay debugging not enabled. " |
3289 | "Use either the 'overlay auto' or\n" | |
3290 | "the 'overlay manual' command.")); | |
c906108c SS |
3291 | |
3292 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3293 | error (_("Argument required: name of an overlay section")); |
c906108c | 3294 | |
c378eb4e | 3295 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3296 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 3297 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
fd361982 | 3298 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
3b9d3ac2 TT |
3299 | { |
3300 | if (!sec->ovly_mapped) | |
3301 | error (_("Section %s is not mapped"), args); | |
3302 | sec->ovly_mapped = 0; | |
3303 | return; | |
3304 | } | |
8a3fe4f8 | 3305 | error (_("No overlay section called %s"), args); |
c906108c SS |
3306 | } |
3307 | ||
3308 | /* Function: overlay_auto_command | |
3309 | A utility command to turn on overlay debugging. | |
c378eb4e | 3310 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3311 | |
3312 | static void | |
2cf311eb | 3313 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3314 | { |
d874f1e2 | 3315 | overlay_debugging = ovly_auto; |
1900040c | 3316 | enable_overlay_breakpoints (); |
c906108c | 3317 | if (info_verbose) |
a3f17187 | 3318 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3319 | } |
3320 | ||
3321 | /* Function: overlay_manual_command | |
3322 | A utility command to turn on overlay debugging. | |
c378eb4e | 3323 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3324 | |
3325 | static void | |
2cf311eb | 3326 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3327 | { |
d874f1e2 | 3328 | overlay_debugging = ovly_on; |
1900040c | 3329 | disable_overlay_breakpoints (); |
c906108c | 3330 | if (info_verbose) |
a3f17187 | 3331 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3332 | } |
3333 | ||
3334 | /* Function: overlay_off_command | |
3335 | A utility command to turn on overlay debugging. | |
c378eb4e | 3336 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3337 | |
3338 | static void | |
2cf311eb | 3339 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3340 | { |
d874f1e2 | 3341 | overlay_debugging = ovly_off; |
1900040c | 3342 | disable_overlay_breakpoints (); |
c906108c | 3343 | if (info_verbose) |
a3f17187 | 3344 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3345 | } |
3346 | ||
3347 | static void | |
2cf311eb | 3348 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3349 | { |
e17c207e UW |
3350 | struct gdbarch *gdbarch = get_current_arch (); |
3351 | ||
3352 | if (gdbarch_overlay_update_p (gdbarch)) | |
3353 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3354 | else |
8a3fe4f8 | 3355 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3356 | } |
3357 | ||
3358 | /* Function: overlay_command | |
c378eb4e | 3359 | A place-holder for a mis-typed command. */ |
c906108c | 3360 | |
c378eb4e | 3361 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3362 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3363 | |
3364 | static void | |
981a3fb3 | 3365 | overlay_command (const char *args, int from_tty) |
c906108c | 3366 | { |
c5aa993b | 3367 | printf_unfiltered |
c906108c | 3368 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3369 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3370 | } |
3371 | ||
c906108c SS |
3372 | /* Target Overlays for the "Simplest" overlay manager: |
3373 | ||
5417f6dc RM |
3374 | This is GDB's default target overlay layer. It works with the |
3375 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3376 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3377 | so targets that use a different runtime overlay manager can |
c906108c SS |
3378 | substitute their own overlay_update function and take over the |
3379 | function pointer. | |
3380 | ||
3381 | The overlay_update function pokes around in the target's data structures | |
3382 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3383 | this information. | |
3384 | ||
3385 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3386 | unsigned _novlys; /# number of overlay sections #/ |
3387 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3388 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3389 | {..., ..., ..., ...}, |
3390 | } | |
3391 | unsigned _novly_regions; /# number of overlay regions #/ | |
3392 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3393 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3394 | {..., ..., ...}, |
3395 | } | |
c906108c SS |
3396 | These functions will attempt to update GDB's mappedness state in the |
3397 | symbol section table, based on the target's mappedness state. | |
3398 | ||
3399 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3400 | attempt to detect when the cached copy is invalidated. The main | |
3401 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3402 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3403 | the target (whenever possible). */ |
c906108c SS |
3404 | |
3405 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3406 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3407 | static unsigned cache_novlys = 0; |
c906108c | 3408 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3409 | enum ovly_index |
3410 | { | |
438e1e42 | 3411 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3412 | }; |
c906108c | 3413 | |
c378eb4e | 3414 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3415 | |
c906108c | 3416 | static void |
fba45db2 | 3417 | simple_free_overlay_table (void) |
c906108c SS |
3418 | { |
3419 | if (cache_ovly_table) | |
b8c9b27d | 3420 | xfree (cache_ovly_table); |
c5aa993b | 3421 | cache_novlys = 0; |
c906108c SS |
3422 | cache_ovly_table = NULL; |
3423 | cache_ovly_table_base = 0; | |
3424 | } | |
3425 | ||
9216df95 | 3426 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3427 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3428 | |
c906108c | 3429 | static void |
9216df95 | 3430 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3431 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3432 | { |
c378eb4e | 3433 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3434 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3435 | int i; |
c906108c | 3436 | |
9216df95 | 3437 | read_memory (memaddr, buf, len * size); |
c906108c | 3438 | for (i = 0; i < len; i++) |
e17a4113 | 3439 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3440 | } |
3441 | ||
3442 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3443 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3444 | |
c5aa993b | 3445 | static int |
fba45db2 | 3446 | simple_read_overlay_table (void) |
c906108c | 3447 | { |
3b7344d5 | 3448 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3449 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3450 | struct gdbarch *gdbarch; |
3451 | int word_size; | |
e17a4113 | 3452 | enum bfd_endian byte_order; |
c906108c SS |
3453 | |
3454 | simple_free_overlay_table (); | |
9b27852e | 3455 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3456 | if (! novlys_msym.minsym) |
c906108c | 3457 | { |
8a3fe4f8 | 3458 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3459 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3460 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3461 | return 0; |
c906108c | 3462 | } |
0d43edd1 | 3463 | |
7c7b6655 TT |
3464 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3465 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3466 | { |
8a3fe4f8 | 3467 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3468 | "`_ovly_table' array\n" |
8a3fe4f8 | 3469 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3470 | return 0; |
3471 | } | |
3472 | ||
7c7b6655 | 3473 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3474 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3475 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3476 | |
77e371c0 TT |
3477 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3478 | 4, byte_order); | |
0d43edd1 | 3479 | cache_ovly_table |
224c3ddb | 3480 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3481 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3482 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3483 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3484 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3485 | |
c5aa993b | 3486 | return 1; /* SUCCESS */ |
c906108c SS |
3487 | } |
3488 | ||
5417f6dc | 3489 | /* Function: simple_overlay_update_1 |
c906108c SS |
3490 | A helper function for simple_overlay_update. Assuming a cached copy |
3491 | of _ovly_table exists, look through it to find an entry whose vma, | |
3492 | lma and size match those of OSECT. Re-read the entry and make sure | |
3493 | it still matches OSECT (else the table may no longer be valid). | |
3494 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3495 | success, 0 for failure. */ | |
3496 | ||
3497 | static int | |
fba45db2 | 3498 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3499 | { |
764c99c1 | 3500 | int i; |
fbd35540 | 3501 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3502 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3503 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3504 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3505 | |
c906108c | 3506 | for (i = 0; i < cache_novlys; i++) |
fd361982 AM |
3507 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3508 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c | 3509 | { |
9216df95 UW |
3510 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3511 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3512 | 4, word_size, byte_order); |
fd361982 AM |
3513 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3514 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c SS |
3515 | { |
3516 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3517 | return 1; | |
3518 | } | |
c378eb4e | 3519 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3520 | return 0; |
3521 | } | |
3522 | return 0; | |
3523 | } | |
3524 | ||
3525 | /* Function: simple_overlay_update | |
5417f6dc RM |
3526 | If OSECT is NULL, then update all sections' mapped state |
3527 | (after re-reading the entire target _ovly_table). | |
3528 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3529 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3530 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3531 | re-read the entire cache, and go ahead and update all sections. */ |
3532 | ||
1c772458 | 3533 | void |
fba45db2 | 3534 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3535 | { |
c378eb4e | 3536 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3537 | if (osect) |
c378eb4e | 3538 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3539 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3540 | { |
3541 | /* Does its cached location match what's currently in the | |
3542 | symtab? */ | |
3b7344d5 | 3543 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3544 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3545 | ||
3b7344d5 | 3546 | if (minsym.minsym == NULL) |
9cc89665 MS |
3547 | error (_("Error reading inferior's overlay table: couldn't " |
3548 | "find `_ovly_table' array\n" | |
3549 | "in inferior. Use `overlay manual' mode.")); | |
3550 | ||
77e371c0 | 3551 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3552 | /* Then go ahead and try to look up this single section in |
3553 | the cache. */ | |
3554 | if (simple_overlay_update_1 (osect)) | |
3555 | /* Found it! We're done. */ | |
3556 | return; | |
3557 | } | |
c906108c SS |
3558 | |
3559 | /* Cached table no good: need to read the entire table anew. | |
3560 | Or else we want all the sections, in which case it's actually | |
3561 | more efficient to read the whole table in one block anyway. */ | |
3562 | ||
0d43edd1 JB |
3563 | if (! simple_read_overlay_table ()) |
3564 | return; | |
3565 | ||
c378eb4e | 3566 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3567 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3568 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3569 | if (section_is_overlay (osect)) | |
3570 | { | |
3571 | int i; | |
3572 | asection *bsect = osect->the_bfd_section; | |
3573 | ||
3574 | for (i = 0; i < cache_novlys; i++) | |
fd361982 AM |
3575 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3576 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
3b9d3ac2 TT |
3577 | { /* obj_section matches i'th entry in ovly_table. */ |
3578 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3579 | break; /* finished with inner for loop: break out. */ | |
3580 | } | |
3581 | } | |
c906108c SS |
3582 | } |
3583 | ||
086df311 DJ |
3584 | /* Set the output sections and output offsets for section SECTP in |
3585 | ABFD. The relocation code in BFD will read these offsets, so we | |
3586 | need to be sure they're initialized. We map each section to itself, | |
3587 | with no offset; this means that SECTP->vma will be honored. */ | |
3588 | ||
3589 | static void | |
3590 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3591 | { | |
3592 | sectp->output_section = sectp; | |
3593 | sectp->output_offset = 0; | |
3594 | } | |
3595 | ||
ac8035ab TG |
3596 | /* Default implementation for sym_relocate. */ |
3597 | ||
ac8035ab TG |
3598 | bfd_byte * |
3599 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3600 | bfd_byte *buf) | |
3601 | { | |
3019eac3 DE |
3602 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3603 | DWO file. */ | |
3604 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3605 | |
3606 | /* We're only interested in sections with relocation | |
3607 | information. */ | |
3608 | if ((sectp->flags & SEC_RELOC) == 0) | |
3609 | return NULL; | |
3610 | ||
3611 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3612 | all sections begin at 0. */ | |
3613 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3614 | ||
3615 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3616 | } | |
3617 | ||
086df311 DJ |
3618 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3619 | contents are stored in BUF if it is non-NULL, or returned in a | |
3620 | malloc'd buffer otherwise. | |
3621 | ||
3622 | For some platforms and debug info formats, shared libraries contain | |
3623 | relocations against the debug sections (particularly for DWARF-2; | |
3624 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3625 | the version of the linker in use). Also, ELF object files naturally | |
3626 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3627 | the relocations in order to get the locations of symbols correct. |
3628 | Another example that may require relocation processing, is the | |
3629 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3630 | debug section. */ | |
086df311 DJ |
3631 | |
3632 | bfd_byte * | |
ac8035ab TG |
3633 | symfile_relocate_debug_section (struct objfile *objfile, |
3634 | asection *sectp, bfd_byte *buf) | |
086df311 | 3635 | { |
ac8035ab | 3636 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3637 | |
ac8035ab | 3638 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3639 | } |
c906108c | 3640 | |
31d99776 DJ |
3641 | struct symfile_segment_data * |
3642 | get_symfile_segment_data (bfd *abfd) | |
3643 | { | |
00b5771c | 3644 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3645 | |
3646 | if (sf == NULL) | |
3647 | return NULL; | |
3648 | ||
3649 | return sf->sym_segments (abfd); | |
3650 | } | |
3651 | ||
3652 | void | |
3653 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3654 | { | |
3655 | xfree (data->segment_bases); | |
3656 | xfree (data->segment_sizes); | |
3657 | xfree (data->segment_info); | |
3658 | xfree (data); | |
3659 | } | |
3660 | ||
28c32713 JB |
3661 | /* Given: |
3662 | - DATA, containing segment addresses from the object file ABFD, and | |
3663 | the mapping from ABFD's sections onto the segments that own them, | |
3664 | and | |
3665 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3666 | segment addresses reported by the target, | |
3667 | store the appropriate offsets for each section in OFFSETS. | |
3668 | ||
3669 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3670 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3671 | ||
8d385431 DJ |
3672 | If there are more entries, then ignore the extra. The target may |
3673 | not be able to distinguish between an empty data segment and a | |
3674 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3675 | |
31d99776 | 3676 | int |
3189cb12 DE |
3677 | symfile_map_offsets_to_segments (bfd *abfd, |
3678 | const struct symfile_segment_data *data, | |
6a053cb1 | 3679 | section_offsets &offsets, |
31d99776 DJ |
3680 | int num_segment_bases, |
3681 | const CORE_ADDR *segment_bases) | |
3682 | { | |
3683 | int i; | |
3684 | asection *sect; | |
3685 | ||
28c32713 JB |
3686 | /* It doesn't make sense to call this function unless you have some |
3687 | segment base addresses. */ | |
202b96c1 | 3688 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3689 | |
31d99776 DJ |
3690 | /* If we do not have segment mappings for the object file, we |
3691 | can not relocate it by segments. */ | |
3692 | gdb_assert (data != NULL); | |
3693 | gdb_assert (data->num_segments > 0); | |
3694 | ||
31d99776 DJ |
3695 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3696 | { | |
31d99776 DJ |
3697 | int which = data->segment_info[i]; |
3698 | ||
28c32713 JB |
3699 | gdb_assert (0 <= which && which <= data->num_segments); |
3700 | ||
3701 | /* Don't bother computing offsets for sections that aren't | |
3702 | loaded as part of any segment. */ | |
3703 | if (! which) | |
3704 | continue; | |
3705 | ||
3706 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3707 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3708 | if (which > num_segment_bases) |
28c32713 | 3709 | which = num_segment_bases; |
31d99776 | 3710 | |
6a053cb1 | 3711 | offsets[i] = segment_bases[which - 1] - data->segment_bases[which - 1]; |
31d99776 DJ |
3712 | } |
3713 | ||
3714 | return 1; | |
3715 | } | |
3716 | ||
3717 | static void | |
3718 | symfile_find_segment_sections (struct objfile *objfile) | |
3719 | { | |
3720 | bfd *abfd = objfile->obfd; | |
3721 | int i; | |
3722 | asection *sect; | |
3723 | struct symfile_segment_data *data; | |
3724 | ||
3725 | data = get_symfile_segment_data (objfile->obfd); | |
3726 | if (data == NULL) | |
3727 | return; | |
3728 | ||
3729 | if (data->num_segments != 1 && data->num_segments != 2) | |
3730 | { | |
3731 | free_symfile_segment_data (data); | |
3732 | return; | |
3733 | } | |
3734 | ||
3735 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3736 | { | |
31d99776 DJ |
3737 | int which = data->segment_info[i]; |
3738 | ||
3739 | if (which == 1) | |
3740 | { | |
3741 | if (objfile->sect_index_text == -1) | |
3742 | objfile->sect_index_text = sect->index; | |
3743 | ||
3744 | if (objfile->sect_index_rodata == -1) | |
3745 | objfile->sect_index_rodata = sect->index; | |
3746 | } | |
3747 | else if (which == 2) | |
3748 | { | |
3749 | if (objfile->sect_index_data == -1) | |
3750 | objfile->sect_index_data = sect->index; | |
3751 | ||
3752 | if (objfile->sect_index_bss == -1) | |
3753 | objfile->sect_index_bss = sect->index; | |
3754 | } | |
3755 | } | |
3756 | ||
3757 | free_symfile_segment_data (data); | |
3758 | } | |
3759 | ||
76ad5e1e NB |
3760 | /* Listen for free_objfile events. */ |
3761 | ||
3762 | static void | |
3763 | symfile_free_objfile (struct objfile *objfile) | |
3764 | { | |
c33b2f12 MM |
3765 | /* Remove the target sections owned by this objfile. */ |
3766 | if (objfile != NULL) | |
76ad5e1e NB |
3767 | remove_target_sections ((void *) objfile); |
3768 | } | |
3769 | ||
540c2971 DE |
3770 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3771 | Expand all symtabs that match the specified criteria. | |
3772 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3773 | ||
3774 | void | |
14bc53a8 PA |
3775 | expand_symtabs_matching |
3776 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3777 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3778 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3779 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3780 | enum search_domain kind) | |
540c2971 | 3781 | { |
2030c079 | 3782 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3783 | { |
3784 | if (objfile->sf) | |
3785 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
3786 | lookup_name, | |
3787 | symbol_matcher, | |
3788 | expansion_notify, kind); | |
3789 | } | |
540c2971 DE |
3790 | } |
3791 | ||
3792 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3793 | Map function FUN over every file. | |
3794 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3795 | ||
3796 | void | |
bb4142cf DE |
3797 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3798 | int need_fullname) | |
540c2971 | 3799 | { |
2030c079 | 3800 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3801 | { |
3802 | if (objfile->sf) | |
3803 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3804 | need_fullname); | |
3805 | } | |
540c2971 DE |
3806 | } |
3807 | ||
32fa66eb SM |
3808 | #if GDB_SELF_TEST |
3809 | ||
3810 | namespace selftests { | |
3811 | namespace filename_language { | |
3812 | ||
32fa66eb SM |
3813 | static void test_filename_language () |
3814 | { | |
3815 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3816 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3817 | |
3818 | /* Test deducing an unknown extension. */ | |
3819 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3820 | SELF_CHECK (lang == language_unknown); | |
3821 | ||
3822 | /* Test deducing a known extension. */ | |
3823 | lang = deduce_language_from_filename ("myfile.c"); | |
3824 | SELF_CHECK (lang == language_c); | |
3825 | ||
3826 | /* Test adding a new extension using the internal API. */ | |
3827 | add_filename_language (".blah", language_pascal); | |
3828 | lang = deduce_language_from_filename ("myfile.blah"); | |
3829 | SELF_CHECK (lang == language_pascal); | |
3830 | } | |
3831 | ||
3832 | static void | |
3833 | test_set_ext_lang_command () | |
3834 | { | |
3835 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3836 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3837 | |
3838 | /* Confirm that the .hello extension is not known. */ | |
3839 | language lang = deduce_language_from_filename ("cake.hello"); | |
3840 | SELF_CHECK (lang == language_unknown); | |
3841 | ||
3842 | /* Test adding a new extension using the CLI command. */ | |
b02f78f9 | 3843 | auto args_holder = make_unique_xstrdup (".hello rust"); |
32fa66eb SM |
3844 | ext_args = args_holder.get (); |
3845 | set_ext_lang_command (NULL, 1, NULL); | |
3846 | ||
3847 | lang = deduce_language_from_filename ("cake.hello"); | |
3848 | SELF_CHECK (lang == language_rust); | |
3849 | ||
3850 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3851 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3852 | args_holder.reset (xstrdup (".hello pascal")); |
3853 | ext_args = args_holder.get (); | |
3854 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3855 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3856 | |
3857 | lang = deduce_language_from_filename ("cake.hello"); | |
3858 | SELF_CHECK (lang == language_pascal); | |
3859 | SELF_CHECK (size_before == size_after); | |
3860 | } | |
3861 | ||
3862 | } /* namespace filename_language */ | |
3863 | } /* namespace selftests */ | |
3864 | ||
3865 | #endif /* GDB_SELF_TEST */ | |
3866 | ||
6c265988 | 3867 | void _initialize_symfile (); |
c906108c | 3868 | void |
6c265988 | 3869 | _initialize_symfile () |
c906108c SS |
3870 | { |
3871 | struct cmd_list_element *c; | |
c5aa993b | 3872 | |
76727919 | 3873 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3874 | |
97cbe998 | 3875 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3876 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3877 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3878 | faster.\n\ |
3879 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3880 | symbolic debug information." | |
8ca2f0b9 | 3881 | |
1a966eab AC |
3882 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3883 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3884 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3885 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3886 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3887 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3888 | set_cmd_completer (c, filename_completer); |
c906108c | 3889 | |
1a966eab | 3890 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3891 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3892 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3893 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3894 | ADDR is the starting address of the file's text.\n\ |
3895 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3896 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3897 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3898 | OFF is an optional offset which is added to the default load addresses\n\ | |
3899 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3900 | READNOW_READNEVER_HELP), |
c906108c | 3901 | &cmdlist); |
5ba2abeb | 3902 | set_cmd_completer (c, filename_completer); |
c906108c | 3903 | |
63644780 NB |
3904 | c = add_cmd ("remove-symbol-file", class_files, |
3905 | remove_symbol_file_command, _("\ | |
3906 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3907 | Usage: remove-symbol-file FILENAME\n\ | |
3908 | remove-symbol-file -a ADDRESS\n\ | |
3909 | The file to remove can be identified by its filename or by an address\n\ | |
3910 | that lies within the boundaries of this symbol file in memory."), | |
3911 | &cmdlist); | |
3912 | ||
1a966eab | 3913 | c = add_cmd ("load", class_files, load_command, _("\ |
590042fc PW |
3914 | Dynamically load FILE into the running program.\n\ |
3915 | FILE symbols are recorded for access from GDB.\n\ | |
8ca2f0b9 | 3916 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3917 | An optional load OFFSET may also be given as a literal address.\n\ |
3918 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3919 | on its own."), &cmdlist); |
5ba2abeb | 3920 | set_cmd_completer (c, filename_completer); |
c906108c | 3921 | |
c5aa993b | 3922 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3923 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3924 | "overlay ", 0, &cmdlist); |
3925 | ||
3926 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3927 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3928 | ||
c5aa993b | 3929 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3930 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3931 | |
c5aa993b | 3932 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3933 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3934 | |
c5aa993b | 3935 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3936 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3937 | |
c5aa993b | 3938 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3939 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3940 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3941 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3942 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3943 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3944 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3945 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3946 | |
3947 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3948 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3949 | &ext_args, _("\ | |
3950 | Set mapping between filename extension and source language."), _("\ | |
3951 | Show mapping between filename extension and source language."), _("\ | |
3952 | Usage: set extension-language .foo bar"), | |
3953 | set_ext_lang_command, | |
920d2a44 | 3954 | show_ext_args, |
26c41df3 | 3955 | &setlist, &showlist); |
c906108c | 3956 | |
c5aa993b | 3957 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3958 | _("All filename extensions associated with a source language.")); |
917317f4 | 3959 | |
525226b5 AC |
3960 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3961 | &debug_file_directory, _("\ | |
24ddea62 JK |
3962 | Set the directories where separate debug symbols are searched for."), _("\ |
3963 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3964 | Separate debug symbols are first searched for in the same\n\ |
3965 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3966 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3967 | each global debug-file-directory component prepended."), |
525226b5 | 3968 | NULL, |
920d2a44 | 3969 | show_debug_file_directory, |
525226b5 | 3970 | &setlist, &showlist); |
770e7fc7 DE |
3971 | |
3972 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3973 | print_symbol_loading_enums, &print_symbol_loading, | |
3974 | _("\ | |
3975 | Set printing of symbol loading messages."), _("\ | |
3976 | Show printing of symbol loading messages."), _("\ | |
3977 | off == turn all messages off\n\ | |
3978 | brief == print messages for the executable,\n\ | |
3979 | and brief messages for shared libraries\n\ | |
3980 | full == print messages for the executable,\n\ | |
3981 | and messages for each shared library."), | |
3982 | NULL, | |
3983 | NULL, | |
3984 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3985 | |
3986 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3987 | &separate_debug_file_debug, _("\ | |
3988 | Set printing of separate debug info file search debug."), _("\ | |
3989 | Show printing of separate debug info file search debug."), _("\ | |
3990 | When on, GDB prints the searched locations while looking for separate debug \ | |
3991 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3992 | |
3993 | #if GDB_SELF_TEST | |
3994 | selftests::register_test | |
3995 | ("filename_language", selftests::filename_language::test_filename_language); | |
3996 | selftests::register_test | |
3997 | ("set_ext_lang_command", | |
3998 | selftests::filename_language::test_set_ext_lang_command); | |
3999 | #endif | |
c906108c | 4000 | } |