Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1990-2019 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" |
dbda9972 | 47 | #include "readline/readline.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 | |
37e136b1 | 272 | sap[i].addr += objfile->section_offsets->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 FF |
317 | |
318 | for (i = 0; i < objfile->num_sections; i++) | |
319 | { | |
320 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
321 | { | |
322 | break; | |
323 | } | |
324 | } | |
325 | if (i == objfile->num_sections) | |
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 | { | |
342 | struct section_offsets *offsets; | |
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; |
c1bd25fd DJ |
353 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
354 | int done; | |
fd361982 | 355 | ULONGEST align = ((ULONGEST) 1) << bfd_section_alignment (sect); |
c1bd25fd | 356 | |
2711e456 | 357 | /* We are only interested in allocated sections. */ |
fd361982 | 358 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
359 | return; |
360 | ||
361 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 362 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
363 | return; |
364 | ||
365 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
366 | start_addr = (arg->lowest + align - 1) & -align; |
367 | ||
c1bd25fd DJ |
368 | do { |
369 | asection *cur_sec; | |
c1bd25fd | 370 | |
c1bd25fd DJ |
371 | done = 1; |
372 | ||
373 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
374 | { | |
375 | int indx = cur_sec->index; | |
c1bd25fd DJ |
376 | |
377 | /* We don't need to compare against ourself. */ | |
378 | if (cur_sec == sect) | |
379 | continue; | |
380 | ||
2711e456 | 381 | /* We can only conflict with allocated sections. */ |
fd361982 | 382 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
383 | continue; |
384 | ||
385 | /* If the section offset is 0, either the section has not been placed | |
386 | yet, or it was the lowest section placed (in which case LOWEST | |
387 | will be past its end). */ | |
388 | if (offsets[indx] == 0) | |
389 | continue; | |
390 | ||
391 | /* If this section would overlap us, then we must move up. */ | |
fd361982 AM |
392 | if (start_addr + bfd_section_size (sect) > offsets[indx] |
393 | && start_addr < offsets[indx] + bfd_section_size (cur_sec)) | |
c1bd25fd | 394 | { |
fd361982 | 395 | start_addr = offsets[indx] + bfd_section_size (cur_sec); |
c1bd25fd DJ |
396 | start_addr = (start_addr + align - 1) & -align; |
397 | done = 0; | |
3bd72c6f | 398 | break; |
c1bd25fd DJ |
399 | } |
400 | ||
401 | /* Otherwise, we appear to be OK. So far. */ | |
402 | } | |
403 | } | |
404 | while (!done); | |
405 | ||
65cf3563 | 406 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
fd361982 | 407 | arg->lowest = start_addr + bfd_section_size (sect); |
c1bd25fd | 408 | } |
e8289572 | 409 | |
4f7ae6f5 | 410 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
75242ef4 JK |
411 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS |
412 | entries. */ | |
e8289572 JB |
413 | |
414 | void | |
75242ef4 JK |
415 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
416 | int num_sections, | |
37e136b1 | 417 | const section_addr_info &addrs) |
e8289572 JB |
418 | { |
419 | int i; | |
420 | ||
75242ef4 | 421 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 422 | |
c378eb4e | 423 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 424 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 425 | { |
3189cb12 | 426 | const struct other_sections *osp; |
e8289572 | 427 | |
37e136b1 | 428 | osp = &addrs[i]; |
5488dafb | 429 | if (osp->sectindex == -1) |
e8289572 JB |
430 | continue; |
431 | ||
c378eb4e | 432 | /* Record all sections in offsets. */ |
e8289572 | 433 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 434 | the BFD index. */ |
75242ef4 JK |
435 | section_offsets->offsets[osp->sectindex] = osp->addr; |
436 | } | |
437 | } | |
438 | ||
1276c759 JK |
439 | /* Transform section name S for a name comparison. prelink can split section |
440 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
441 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
442 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
443 | (`.sbss') section has invalid (increased) virtual address. */ | |
444 | ||
445 | static const char * | |
446 | addr_section_name (const char *s) | |
447 | { | |
448 | if (strcmp (s, ".dynbss") == 0) | |
449 | return ".bss"; | |
450 | if (strcmp (s, ".sdynbss") == 0) | |
451 | return ".sbss"; | |
452 | ||
453 | return s; | |
454 | } | |
455 | ||
37e136b1 TT |
456 | /* std::sort comparator for addrs_section_sort. Sort entries in |
457 | ascending order by their (name, sectindex) pair. sectindex makes | |
458 | the sort by name stable. */ | |
82ccf5a5 | 459 | |
37e136b1 TT |
460 | static bool |
461 | addrs_section_compar (const struct other_sections *a, | |
462 | const struct other_sections *b) | |
82ccf5a5 | 463 | { |
22e048c9 | 464 | int retval; |
82ccf5a5 | 465 | |
37e136b1 TT |
466 | retval = strcmp (addr_section_name (a->name.c_str ()), |
467 | addr_section_name (b->name.c_str ())); | |
468 | if (retval != 0) | |
469 | return retval < 0; | |
82ccf5a5 | 470 | |
37e136b1 | 471 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
472 | } |
473 | ||
37e136b1 | 474 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 475 | |
37e136b1 TT |
476 | static std::vector<const struct other_sections *> |
477 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 478 | { |
82ccf5a5 JK |
479 | int i; |
480 | ||
37e136b1 TT |
481 | std::vector<const struct other_sections *> array (addrs.size ()); |
482 | for (i = 0; i < addrs.size (); i++) | |
483 | array[i] = &addrs[i]; | |
82ccf5a5 | 484 | |
37e136b1 | 485 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
486 | |
487 | return array; | |
488 | } | |
489 | ||
75242ef4 | 490 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
491 | also SECTINDEXes specific to ABFD there. This function can be used to |
492 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
493 | |
494 | void | |
37e136b1 | 495 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
496 | { |
497 | asection *lower_sect; | |
75242ef4 JK |
498 | CORE_ADDR lower_offset; |
499 | int i; | |
500 | ||
501 | /* Find lowest loadable section to be used as starting point for | |
85102364 | 502 | contiguous sections. */ |
e76ab67f DJ |
503 | lower_sect = NULL; |
504 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
505 | if (lower_sect == NULL) |
506 | { | |
507 | warning (_("no loadable sections found in added symbol-file %s"), | |
508 | bfd_get_filename (abfd)); | |
509 | lower_offset = 0; | |
e8289572 | 510 | } |
75242ef4 | 511 | else |
fd361982 | 512 | lower_offset = bfd_section_vma (lower_sect); |
75242ef4 | 513 | |
82ccf5a5 JK |
514 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
515 | in ABFD. Section names are not unique - there can be multiple sections of | |
516 | the same name. Also the sections of the same name do not have to be | |
517 | adjacent to each other. Some sections may be present only in one of the | |
518 | files. Even sections present in both files do not have to be in the same | |
519 | order. | |
520 | ||
521 | Use stable sort by name for the sections in both files. Then linearly | |
522 | scan both lists matching as most of the entries as possible. */ | |
523 | ||
37e136b1 TT |
524 | std::vector<const struct other_sections *> addrs_sorted |
525 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 526 | |
37e136b1 TT |
527 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
528 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
529 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 530 | |
c378eb4e MS |
531 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
532 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 533 | |
37e136b1 TT |
534 | std::vector<const struct other_sections *> |
535 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 536 | |
37e136b1 TT |
537 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
538 | = abfd_addrs_sorted.begin (); | |
52941706 | 539 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 540 | { |
37e136b1 | 541 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 542 | |
37e136b1 TT |
543 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
544 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 545 | sect_name) < 0) |
37e136b1 | 546 | abfd_sorted_iter++; |
82ccf5a5 | 547 | |
37e136b1 TT |
548 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
549 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 550 | sect_name) == 0) |
82ccf5a5 JK |
551 | { |
552 | int index_in_addrs; | |
553 | ||
554 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 555 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 556 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 557 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
558 | |
559 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 560 | abfd_sorted_iter++; |
82ccf5a5 | 561 | } |
82ccf5a5 JK |
562 | } |
563 | ||
75242ef4 JK |
564 | /* Calculate offsets for the loadable sections. |
565 | FIXME! Sections must be in order of increasing loadable section | |
566 | so that contiguous sections can use the lower-offset!!! | |
567 | ||
568 | Adjust offsets if the segments are not contiguous. | |
569 | If the section is contiguous, its offset should be set to | |
570 | the offset of the highest loadable section lower than it | |
571 | (the loadable section directly below it in memory). | |
572 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
573 | ||
37e136b1 | 574 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 575 | { |
37e136b1 | 576 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
577 | |
578 | if (sect) | |
75242ef4 | 579 | { |
c378eb4e | 580 | /* This is the index used by BFD. */ |
37e136b1 | 581 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 582 | |
37e136b1 | 583 | if ((*addrs)[i].addr != 0) |
75242ef4 | 584 | { |
37e136b1 TT |
585 | (*addrs)[i].addr -= sect->addr; |
586 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
587 | } |
588 | else | |
37e136b1 | 589 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
590 | } |
591 | else | |
672d9c23 | 592 | { |
1276c759 | 593 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 594 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 595 | |
b0fcb67f JK |
596 | /* This section does not exist in ABFD, which is normally |
597 | unexpected and we want to issue a warning. | |
598 | ||
4d9743af JK |
599 | However, the ELF prelinker does create a few sections which are |
600 | marked in the main executable as loadable (they are loaded in | |
601 | memory from the DYNAMIC segment) and yet are not present in | |
602 | separate debug info files. This is fine, and should not cause | |
603 | a warning. Shared libraries contain just the section | |
604 | ".gnu.liblist" but it is not marked as loadable there. There is | |
605 | no other way to identify them than by their name as the sections | |
1276c759 JK |
606 | created by prelink have no special flags. |
607 | ||
608 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 609 | |
37e136b1 TT |
610 | if (!(sect_name == ".gnu.liblist" |
611 | || sect_name == ".gnu.conflict" | |
612 | || (sect_name == ".bss" | |
1276c759 | 613 | && i > 0 |
37e136b1 | 614 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 615 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 616 | || (sect_name == ".sbss" |
1276c759 | 617 | && i > 0 |
37e136b1 | 618 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 619 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 620 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
621 | bfd_get_filename (abfd)); |
622 | ||
37e136b1 TT |
623 | (*addrs)[i].addr = 0; |
624 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 625 | } |
75242ef4 JK |
626 | } |
627 | } | |
628 | ||
629 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
630 | of how to represent it for fast symbol reading. This is the default | |
631 | version of the sym_fns.sym_offsets function for symbol readers that | |
632 | don't need to do anything special. It allocates a section_offsets table | |
633 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
634 | ||
635 | void | |
636 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 637 | const section_addr_info &addrs) |
75242ef4 | 638 | { |
d445b2f6 | 639 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
640 | objfile->section_offsets = (struct section_offsets *) |
641 | obstack_alloc (&objfile->objfile_obstack, | |
642 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
643 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
644 | objfile->num_sections, addrs); | |
e8289572 | 645 | |
c1bd25fd DJ |
646 | /* For relocatable files, all loadable sections will start at zero. |
647 | The zero is meaningless, so try to pick arbitrary addresses such | |
648 | that no loadable sections overlap. This algorithm is quadratic, | |
649 | but the number of sections in a single object file is generally | |
650 | small. */ | |
651 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
652 | { | |
653 | struct place_section_arg arg; | |
2711e456 DJ |
654 | bfd *abfd = objfile->obfd; |
655 | asection *cur_sec; | |
2711e456 DJ |
656 | |
657 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
658 | /* We do not expect this to happen; just skip this step if the | |
659 | relocatable file has a section with an assigned VMA. */ | |
fd361982 | 660 | if (bfd_section_vma (cur_sec) != 0) |
2711e456 DJ |
661 | break; |
662 | ||
663 | if (cur_sec == NULL) | |
664 | { | |
665 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
666 | ||
667 | /* Pick non-overlapping offsets for sections the user did not | |
668 | place explicitly. */ | |
669 | arg.offsets = objfile->section_offsets; | |
670 | arg.lowest = 0; | |
671 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
672 | ||
673 | /* Correctly filling in the section offsets is not quite | |
674 | enough. Relocatable files have two properties that | |
675 | (most) shared objects do not: | |
676 | ||
677 | - Their debug information will contain relocations. Some | |
678 | shared libraries do also, but many do not, so this can not | |
679 | be assumed. | |
680 | ||
681 | - If there are multiple code sections they will be loaded | |
682 | at different relative addresses in memory than they are | |
683 | in the objfile, since all sections in the file will start | |
684 | at address zero. | |
685 | ||
686 | Because GDB has very limited ability to map from an | |
687 | address in debug info to the correct code section, | |
688 | it relies on adding SECT_OFF_TEXT to things which might be | |
689 | code. If we clear all the section offsets, and set the | |
690 | section VMAs instead, then symfile_relocate_debug_section | |
691 | will return meaningful debug information pointing at the | |
692 | correct sections. | |
693 | ||
694 | GDB has too many different data structures for section | |
695 | addresses - a bfd, objfile, and so_list all have section | |
696 | tables, as does exec_ops. Some of these could probably | |
697 | be eliminated. */ | |
698 | ||
699 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
700 | cur_sec = cur_sec->next) | |
701 | { | |
fd361982 | 702 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
2711e456 DJ |
703 | continue; |
704 | ||
fd361982 | 705 | bfd_set_section_vma (cur_sec, offsets[cur_sec->index]); |
3e43a32a MS |
706 | exec_set_section_address (bfd_get_filename (abfd), |
707 | cur_sec->index, | |
30510692 | 708 | offsets[cur_sec->index]); |
2711e456 DJ |
709 | offsets[cur_sec->index] = 0; |
710 | } | |
711 | } | |
c1bd25fd DJ |
712 | } |
713 | ||
e8289572 | 714 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 715 | .rodata sections. */ |
e8289572 JB |
716 | init_objfile_sect_indices (objfile); |
717 | } | |
718 | ||
31d99776 DJ |
719 | /* Divide the file into segments, which are individual relocatable units. |
720 | This is the default version of the sym_fns.sym_segments function for | |
721 | symbol readers that do not have an explicit representation of segments. | |
722 | It assumes that object files do not have segments, and fully linked | |
723 | files have a single segment. */ | |
724 | ||
725 | struct symfile_segment_data * | |
726 | default_symfile_segments (bfd *abfd) | |
727 | { | |
728 | int num_sections, i; | |
729 | asection *sect; | |
730 | struct symfile_segment_data *data; | |
731 | CORE_ADDR low, high; | |
732 | ||
733 | /* Relocatable files contain enough information to position each | |
734 | loadable section independently; they should not be relocated | |
735 | in segments. */ | |
736 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
737 | return NULL; | |
738 | ||
739 | /* Make sure there is at least one loadable section in the file. */ | |
740 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
741 | { | |
fd361982 | 742 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
743 | continue; |
744 | ||
745 | break; | |
746 | } | |
747 | if (sect == NULL) | |
748 | return NULL; | |
749 | ||
fd361982 AM |
750 | low = bfd_section_vma (sect); |
751 | high = low + bfd_section_size (sect); | |
31d99776 | 752 | |
41bf6aca | 753 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 754 | data->num_segments = 1; |
fc270c35 TT |
755 | data->segment_bases = XCNEW (CORE_ADDR); |
756 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
757 | |
758 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 759 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
760 | |
761 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
762 | { | |
763 | CORE_ADDR vma; | |
764 | ||
fd361982 | 765 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
766 | continue; |
767 | ||
fd361982 | 768 | vma = bfd_section_vma (sect); |
31d99776 DJ |
769 | if (vma < low) |
770 | low = vma; | |
fd361982 AM |
771 | if (vma + bfd_section_size (sect) > high) |
772 | high = vma + bfd_section_size (sect); | |
31d99776 DJ |
773 | |
774 | data->segment_info[i] = 1; | |
775 | } | |
776 | ||
777 | data->segment_bases[0] = low; | |
778 | data->segment_sizes[0] = high - low; | |
779 | ||
780 | return data; | |
781 | } | |
782 | ||
608e2dbb TT |
783 | /* This is a convenience function to call sym_read for OBJFILE and |
784 | possibly force the partial symbols to be read. */ | |
785 | ||
786 | static void | |
b15cc25c | 787 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
788 | { |
789 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 790 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
791 | |
792 | /* find_separate_debug_file_in_section should be called only if there is | |
793 | single binary with no existing separate debug info file. */ | |
794 | if (!objfile_has_partial_symbols (objfile) | |
795 | && objfile->separate_debug_objfile == NULL | |
796 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 797 | { |
192b62ce | 798 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
799 | |
800 | if (abfd != NULL) | |
24ba069a JK |
801 | { |
802 | /* find_separate_debug_file_in_section uses the same filename for the | |
803 | virtual section-as-bfd like the bfd filename containing the | |
804 | section. Therefore use also non-canonical name form for the same | |
805 | file containing the section. */ | |
921222e2 TT |
806 | symbol_file_add_separate (abfd.get (), |
807 | bfd_get_filename (abfd.get ()), | |
808 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 809 | } |
608e2dbb TT |
810 | } |
811 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
812 | require_partial_symbols (objfile, 0); | |
813 | } | |
814 | ||
3d6e24f0 JB |
815 | /* Initialize entry point information for this objfile. */ |
816 | ||
817 | static void | |
818 | init_entry_point_info (struct objfile *objfile) | |
819 | { | |
6ef55de7 TT |
820 | struct entry_info *ei = &objfile->per_bfd->ei; |
821 | ||
822 | if (ei->initialized) | |
823 | return; | |
824 | ei->initialized = 1; | |
825 | ||
3d6e24f0 JB |
826 | /* Save startup file's range of PC addresses to help blockframe.c |
827 | decide where the bottom of the stack is. */ | |
828 | ||
829 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
830 | { | |
831 | /* Executable file -- record its entry point so we'll recognize | |
832 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
833 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
834 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
835 | } |
836 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
837 | && bfd_get_start_address (objfile->obfd) != 0) | |
838 | { | |
839 | /* Some shared libraries may have entry points set and be | |
840 | runnable. There's no clear way to indicate this, so just check | |
841 | for values other than zero. */ | |
6ef55de7 TT |
842 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
843 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
844 | } |
845 | else | |
846 | { | |
847 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 848 | ei->entry_point_p = 0; |
3d6e24f0 JB |
849 | } |
850 | ||
6ef55de7 | 851 | if (ei->entry_point_p) |
3d6e24f0 | 852 | { |
53eddfa6 | 853 | struct obj_section *osect; |
6ef55de7 | 854 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 855 | int found; |
3d6e24f0 JB |
856 | |
857 | /* Make certain that the address points at real code, and not a | |
858 | function descriptor. */ | |
859 | entry_point | |
df6d5441 | 860 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 | 861 | entry_point, |
8b88a78e | 862 | current_top_target ()); |
3d6e24f0 JB |
863 | |
864 | /* Remove any ISA markers, so that this matches entries in the | |
865 | symbol table. */ | |
6ef55de7 | 866 | ei->entry_point |
df6d5441 | 867 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
868 | |
869 | found = 0; | |
870 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
871 | { | |
872 | struct bfd_section *sect = osect->the_bfd_section; | |
873 | ||
fd361982 AM |
874 | if (entry_point >= bfd_section_vma (sect) |
875 | && entry_point < (bfd_section_vma (sect) | |
876 | + bfd_section_size (sect))) | |
53eddfa6 | 877 | { |
6ef55de7 | 878 | ei->the_bfd_section_index |
53eddfa6 TT |
879 | = gdb_bfd_section_index (objfile->obfd, sect); |
880 | found = 1; | |
881 | break; | |
882 | } | |
883 | } | |
884 | ||
885 | if (!found) | |
6ef55de7 | 886 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
887 | } |
888 | } | |
889 | ||
c906108c SS |
890 | /* Process a symbol file, as either the main file or as a dynamically |
891 | loaded file. | |
892 | ||
36e4d068 JB |
893 | This function does not set the OBJFILE's entry-point info. |
894 | ||
96baa820 JM |
895 | OBJFILE is where the symbols are to be read from. |
896 | ||
7e8580c1 JB |
897 | ADDRS is the list of section load addresses. If the user has given |
898 | an 'add-symbol-file' command, then this is the list of offsets and | |
899 | addresses he or she provided as arguments to the command; or, if | |
900 | we're handling a shared library, these are the actual addresses the | |
901 | sections are loaded at, according to the inferior's dynamic linker | |
902 | (as gleaned by GDB's shared library code). We convert each address | |
903 | into an offset from the section VMA's as it appears in the object | |
904 | file, and then call the file's sym_offsets function to convert this | |
905 | into a format-specific offset table --- a `struct section_offsets'. | |
d81a3eaf PT |
906 | The sectindex field is used to control the ordering of sections |
907 | with the same name. Upon return, it is updated to contain the | |
85102364 | 908 | corresponding BFD section index, or -1 if the section was not found. |
96baa820 | 909 | |
7eedccfa | 910 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
f71433ee | 911 | an extra symbol file such as dynamically loaded code, and whether |
7eedccfa | 912 | breakpoint reset should be deferred. */ |
c906108c | 913 | |
36e4d068 JB |
914 | static void |
915 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 916 | section_addr_info *addrs, |
b15cc25c | 917 | symfile_add_flags add_flags) |
c906108c | 918 | { |
37e136b1 | 919 | section_addr_info local_addr; |
7eedccfa | 920 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 921 | |
8fb8eb5c | 922 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 923 | |
75245b24 | 924 | if (objfile->sf == NULL) |
36e4d068 JB |
925 | { |
926 | /* No symbols to load, but we still need to make sure | |
927 | that the section_offsets table is allocated. */ | |
d445b2f6 | 928 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 929 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
930 | |
931 | objfile->num_sections = num_sections; | |
932 | objfile->section_offsets | |
224c3ddb SM |
933 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
934 | size); | |
36e4d068 JB |
935 | memset (objfile->section_offsets, 0, size); |
936 | return; | |
937 | } | |
75245b24 | 938 | |
c906108c SS |
939 | /* Make sure that partially constructed symbol tables will be cleaned up |
940 | if an error occurs during symbol reading. */ | |
286526c1 TT |
941 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
942 | ||
ed2b3126 | 943 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
c906108c | 944 | |
6bf667bb DE |
945 | /* If ADDRS is NULL, put together a dummy address list. |
946 | We now establish the convention that an addr of zero means | |
c378eb4e | 947 | no load address was specified. */ |
6bf667bb | 948 | if (! addrs) |
37e136b1 | 949 | addrs = &local_addr; |
a39a16c4 | 950 | |
c5aa993b | 951 | if (mainline) |
c906108c SS |
952 | { |
953 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 954 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 955 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
956 | |
957 | /* Since no error yet, throw away the old symbol table. */ | |
958 | ||
959 | if (symfile_objfile != NULL) | |
960 | { | |
9e86da07 | 961 | delete symfile_objfile; |
adb7f338 | 962 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
963 | } |
964 | ||
965 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
966 | If the user wants to get rid of them, they should do "symbol-file" |
967 | without arguments first. Not sure this is the best behavior | |
968 | (PR 2207). */ | |
c906108c | 969 | |
c5aa993b | 970 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
971 | } |
972 | ||
973 | /* Convert addr into an offset rather than an absolute address. | |
974 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 975 | and assume that <addr> is where that got loaded. |
c906108c | 976 | |
53a5351d JM |
977 | We no longer warn if the lowest section is not a text segment (as |
978 | happens for the PA64 port. */ | |
37e136b1 | 979 | if (addrs->size () > 0) |
75242ef4 | 980 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
981 | |
982 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
983 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 984 | initial symbol reading for this file. */ |
c906108c | 985 | |
c5aa993b | 986 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 987 | clear_complaints (); |
c906108c | 988 | |
37e136b1 | 989 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 990 | |
608e2dbb | 991 | read_symbols (objfile, add_flags); |
b11896a5 | 992 | |
c906108c SS |
993 | /* Discard cleanups as symbol reading was successful. */ |
994 | ||
ed2b3126 | 995 | objfile_holder.release (); |
286526c1 TT |
996 | if (defer_clear_users) |
997 | defer_clear_users->release (); | |
c906108c SS |
998 | } |
999 | ||
36e4d068 JB |
1000 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1001 | entry-point info. */ | |
1002 | ||
6bf667bb | 1003 | static void |
36e4d068 | 1004 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 1005 | section_addr_info *addrs, |
b15cc25c | 1006 | symfile_add_flags add_flags) |
36e4d068 | 1007 | { |
6bf667bb | 1008 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1009 | init_entry_point_info (objfile); |
1010 | } | |
1011 | ||
c906108c SS |
1012 | /* Perform required actions after either reading in the initial |
1013 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1014 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1015 | |
e7d52ed3 | 1016 | static void |
b15cc25c | 1017 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1018 | { |
c906108c | 1019 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1020 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1021 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1022 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1023 | { |
1024 | /* OK, make it the "real" symbol file. */ | |
1025 | symfile_objfile = objfile; | |
1026 | ||
c1e56572 | 1027 | clear_symtab_users (add_flags); |
c906108c | 1028 | } |
7eedccfa | 1029 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1030 | { |
69de3c6a | 1031 | breakpoint_re_set (); |
c906108c SS |
1032 | } |
1033 | ||
1034 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1035 | clear_complaints (); |
c906108c SS |
1036 | } |
1037 | ||
1038 | /* Process a symbol file, as either the main file or as a dynamically | |
1039 | loaded file. | |
1040 | ||
5417f6dc | 1041 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1042 | A new reference is acquired by this function. |
7904e09f | 1043 | |
9e86da07 | 1044 | For NAME description see the objfile constructor. |
24ba069a | 1045 | |
7eedccfa | 1046 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
30baf67b | 1047 | extra, such as dynamically loaded code, and what to do with breakpoints. |
7904e09f | 1048 | |
6bf667bb | 1049 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1050 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1051 | |
63524580 JK |
1052 | PARENT is the original objfile if ABFD is a separate debug info file. |
1053 | Otherwise PARENT is NULL. | |
1054 | ||
c906108c | 1055 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1056 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1057 | |
7904e09f | 1058 | static struct objfile * |
b15cc25c PA |
1059 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1060 | symfile_add_flags add_flags, | |
37e136b1 | 1061 | section_addr_info *addrs, |
b15cc25c | 1062 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1063 | { |
1064 | struct objfile *objfile; | |
7eedccfa | 1065 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1066 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1067 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1068 | && (readnow_symbol_files |
1069 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1070 | |
9291a0cd | 1071 | if (readnow_symbol_files) |
b11896a5 TT |
1072 | { |
1073 | flags |= OBJF_READNOW; | |
1074 | add_flags &= ~SYMFILE_NO_READ; | |
1075 | } | |
97cbe998 SDJ |
1076 | else if (readnever_symbol_files |
1077 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1078 | { | |
1079 | flags |= OBJF_READNEVER; | |
1080 | add_flags |= SYMFILE_NO_READ; | |
1081 | } | |
921222e2 TT |
1082 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1083 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1084 | |
5417f6dc RM |
1085 | /* Give user a chance to burp if we'd be |
1086 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1087 | |
1088 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1089 | && mainline |
c906108c | 1090 | && from_tty |
9e2f0ad4 | 1091 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1092 | error (_("Not confirmed.")); |
c906108c | 1093 | |
b15cc25c PA |
1094 | if (mainline) |
1095 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1096 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1097 | |
63524580 JK |
1098 | if (parent) |
1099 | add_separate_debug_objfile (objfile, parent); | |
1100 | ||
78a4a9b9 AC |
1101 | /* We either created a new mapped symbol table, mapped an existing |
1102 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1103 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1104 | if (should_print) |
c906108c | 1105 | { |
769d7dc4 AC |
1106 | if (deprecated_pre_add_symbol_hook) |
1107 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1108 | else |
6a831f06 PA |
1109 | printf_filtered (_("Reading symbols from %ps...\n"), |
1110 | styled_string (file_name_style.style (), name)); | |
c906108c | 1111 | } |
6bf667bb | 1112 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1113 | |
1114 | /* We now have at least a partial symbol table. Check to see if the | |
1115 | user requested that all symbols be read on initial access via either | |
1116 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1117 | all partial symbol tables for this objfile if so. */ |
c906108c | 1118 | |
9291a0cd | 1119 | if ((flags & OBJF_READNOW)) |
c906108c | 1120 | { |
b11896a5 | 1121 | if (should_print) |
6a831f06 PA |
1122 | printf_filtered (_("Expanding full symbols from %ps...\n"), |
1123 | styled_string (file_name_style.style (), name)); | |
c906108c | 1124 | |
ccefe4c4 TT |
1125 | if (objfile->sf) |
1126 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1127 | } |
1128 | ||
e79497a1 TT |
1129 | /* Note that we only print a message if we have no symbols and have |
1130 | no separate debug file. If there is a separate debug file which | |
1131 | does not have symbols, we'll have emitted this message for that | |
1132 | file, and so printing it twice is just redundant. */ | |
1133 | if (should_print && !objfile_has_symbols (objfile) | |
1134 | && objfile->separate_debug_objfile == nullptr) | |
6a831f06 PA |
1135 | printf_filtered (_("(No debugging symbols found in %ps)\n"), |
1136 | styled_string (file_name_style.style (), name)); | |
cb3c37b2 | 1137 | |
b11896a5 | 1138 | if (should_print) |
c906108c | 1139 | { |
769d7dc4 AC |
1140 | if (deprecated_post_add_symbol_hook) |
1141 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1142 | } |
1143 | ||
481d0f41 JB |
1144 | /* We print some messages regardless of whether 'from_tty || |
1145 | info_verbose' is true, so make sure they go out at the right | |
1146 | time. */ | |
1147 | gdb_flush (gdb_stdout); | |
1148 | ||
109f874e | 1149 | if (objfile->sf == NULL) |
8caee43b | 1150 | { |
76727919 | 1151 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1152 | return objfile; /* No symbols. */ |
8caee43b | 1153 | } |
109f874e | 1154 | |
e7d52ed3 | 1155 | finish_new_objfile (objfile, add_flags); |
c906108c | 1156 | |
76727919 | 1157 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1158 | |
ce7d4522 | 1159 | bfd_cache_close_all (); |
c906108c SS |
1160 | return (objfile); |
1161 | } | |
1162 | ||
24ba069a | 1163 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1164 | see the objfile constructor. */ |
9cce227f TG |
1165 | |
1166 | void | |
b15cc25c PA |
1167 | symbol_file_add_separate (bfd *bfd, const char *name, |
1168 | symfile_add_flags symfile_flags, | |
24ba069a | 1169 | struct objfile *objfile) |
9cce227f | 1170 | { |
089b4803 TG |
1171 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1172 | because sections of BFD may not match sections of OBJFILE and because | |
1173 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1174 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1175 | |
870f88f7 | 1176 | symbol_file_add_with_addrs |
37e136b1 | 1177 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1178 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1179 | | OBJF_USERLOADED), |
1180 | objfile); | |
9cce227f | 1181 | } |
7904e09f | 1182 | |
eb4556d7 JB |
1183 | /* Process the symbol file ABFD, as either the main file or as a |
1184 | dynamically loaded file. | |
6bf667bb | 1185 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1186 | |
eb4556d7 | 1187 | struct objfile * |
b15cc25c PA |
1188 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1189 | symfile_add_flags add_flags, | |
37e136b1 | 1190 | section_addr_info *addrs, |
b15cc25c | 1191 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1192 | { |
24ba069a JK |
1193 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1194 | parent); | |
eb4556d7 JB |
1195 | } |
1196 | ||
7904e09f | 1197 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1198 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1199 | |
7904e09f | 1200 | struct objfile * |
b15cc25c | 1201 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1202 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1203 | { |
192b62ce | 1204 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1205 | |
192b62ce TT |
1206 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1207 | flags, NULL); | |
7904e09f JB |
1208 | } |
1209 | ||
d7db6da9 FN |
1210 | /* Call symbol_file_add() with default values and update whatever is |
1211 | affected by the loading of a new main(). | |
1212 | Used when the file is supplied in the gdb command line | |
1213 | and by some targets with special loading requirements. | |
1214 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1215 | argument for the switches that can only be specified in the symbol_file | |
1216 | command itself. */ | |
5417f6dc | 1217 | |
1adeb98a | 1218 | void |
ecf45d2c | 1219 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1220 | { |
d4d429d5 | 1221 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1222 | } |
1223 | ||
1224 | static void | |
ecf45d2c | 1225 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1226 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1227 | { |
ecf45d2c | 1228 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1229 | |
d4d429d5 PT |
1230 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1231 | if (reloff != 0) | |
1232 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1233 | |
d7db6da9 FN |
1234 | /* Getting new symbols may change our opinion about |
1235 | what is frameless. */ | |
1236 | reinit_frame_cache (); | |
1237 | ||
b15cc25c | 1238 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1239 | set_initial_language (); |
1adeb98a FN |
1240 | } |
1241 | ||
1242 | void | |
1243 | symbol_file_clear (int from_tty) | |
1244 | { | |
1245 | if ((have_full_symbols () || have_partial_symbols ()) | |
1246 | && from_tty | |
0430b0d6 AS |
1247 | && (symfile_objfile |
1248 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1249 | objfile_name (symfile_objfile)) |
0430b0d6 | 1250 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1251 | error (_("Not confirmed.")); |
1adeb98a | 1252 | |
0133421a JK |
1253 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1254 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1255 | no_shared_libraries (NULL, from_tty); |
1256 | ||
0133421a JK |
1257 | free_all_objfiles (); |
1258 | ||
adb7f338 | 1259 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1260 | if (from_tty) |
22068491 | 1261 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1262 | } |
1263 | ||
c4dcb155 SM |
1264 | /* See symfile.h. */ |
1265 | ||
491144b5 | 1266 | bool separate_debug_file_debug = false; |
c4dcb155 | 1267 | |
5b5d99cf | 1268 | static int |
a8dbfd58 | 1269 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1270 | struct objfile *parent_objfile) |
5b5d99cf | 1271 | { |
904578ed JK |
1272 | unsigned long file_crc; |
1273 | int file_crc_p; | |
32a0e547 | 1274 | struct stat parent_stat, abfd_stat; |
904578ed | 1275 | int verified_as_different; |
32a0e547 JK |
1276 | |
1277 | /* Find a separate debug info file as if symbols would be present in | |
1278 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1279 | section can contain just the basename of PARENT_OBJFILE without any | |
1280 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1281 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1282 | |
a8dbfd58 | 1283 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1284 | return 0; |
5b5d99cf | 1285 | |
c4dcb155 | 1286 | if (separate_debug_file_debug) |
50794b45 SM |
1287 | { |
1288 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1289 | gdb_flush (gdb_stdout); | |
1290 | } | |
c4dcb155 | 1291 | |
a8dbfd58 | 1292 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1)); |
f1838a98 | 1293 | |
192b62ce | 1294 | if (abfd == NULL) |
50794b45 SM |
1295 | { |
1296 | if (separate_debug_file_debug) | |
1297 | printf_filtered (_(" no, unable to open.\n")); | |
1298 | ||
1299 | return 0; | |
1300 | } | |
5b5d99cf | 1301 | |
0ba1096a | 1302 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1303 | |
1304 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1305 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1306 | meaningful st_dev.) Files accessed from gdbservers that do not |
1307 | support the vFile:fstat packet will also have st_ino set to zero. | |
1308 | Do not indicate a duplicate library in either case. While there | |
1309 | is no guarantee that a system that provides meaningful inode | |
1310 | numbers will never set st_ino to zero, this is merely an | |
1311 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1312 | |
192b62ce | 1313 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1314 | && abfd_stat.st_ino != 0 |
1315 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1316 | { |
904578ed JK |
1317 | if (abfd_stat.st_dev == parent_stat.st_dev |
1318 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1319 | { |
1320 | if (separate_debug_file_debug) | |
1321 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1322 | ||
1323 | return 0; | |
1324 | } | |
904578ed | 1325 | verified_as_different = 1; |
32a0e547 | 1326 | } |
904578ed JK |
1327 | else |
1328 | verified_as_different = 0; | |
32a0e547 | 1329 | |
192b62ce | 1330 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1331 | |
904578ed | 1332 | if (!file_crc_p) |
50794b45 SM |
1333 | { |
1334 | if (separate_debug_file_debug) | |
1335 | printf_filtered (_(" no, error computing CRC.\n")); | |
1336 | ||
1337 | return 0; | |
1338 | } | |
904578ed | 1339 | |
287ccc17 JK |
1340 | if (crc != file_crc) |
1341 | { | |
dccee2de TT |
1342 | unsigned long parent_crc; |
1343 | ||
0a93529c GB |
1344 | /* If the files could not be verified as different with |
1345 | bfd_stat then we need to calculate the parent's CRC | |
1346 | to verify whether the files are different or not. */ | |
904578ed | 1347 | |
dccee2de | 1348 | if (!verified_as_different) |
904578ed | 1349 | { |
dccee2de | 1350 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1351 | { |
1352 | if (separate_debug_file_debug) | |
1353 | printf_filtered (_(" no, error computing CRC.\n")); | |
1354 | ||
1355 | return 0; | |
1356 | } | |
904578ed JK |
1357 | } |
1358 | ||
dccee2de | 1359 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1360 | warning (_("the debug information found in \"%s\"" |
1361 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1362 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1363 | |
50794b45 SM |
1364 | if (separate_debug_file_debug) |
1365 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1366 | ||
287ccc17 JK |
1367 | return 0; |
1368 | } | |
1369 | ||
50794b45 SM |
1370 | if (separate_debug_file_debug) |
1371 | printf_filtered (_(" yes!\n")); | |
1372 | ||
287ccc17 | 1373 | return 1; |
5b5d99cf JB |
1374 | } |
1375 | ||
aa28a74e | 1376 | char *debug_file_directory = NULL; |
920d2a44 AC |
1377 | static void |
1378 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1379 | struct cmd_list_element *c, const char *value) | |
1380 | { | |
3e43a32a MS |
1381 | fprintf_filtered (file, |
1382 | _("The directory where separate debug " | |
1383 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1384 | value); |
1385 | } | |
5b5d99cf JB |
1386 | |
1387 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1388 | #define DEBUG_SUBDIRECTORY ".debug" | |
1389 | #endif | |
1390 | ||
1db33378 PP |
1391 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1392 | where the original file resides (may not be the same as | |
1393 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1394 | looking for. CANON_DIR is the "realpath" form of DIR. |
1395 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1396 | Returns the path of the file with separate debug info, or an empty |
1397 | string. */ | |
1db33378 | 1398 | |
a8dbfd58 | 1399 | static std::string |
1db33378 PP |
1400 | find_separate_debug_file (const char *dir, |
1401 | const char *canon_dir, | |
1402 | const char *debuglink, | |
1403 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1404 | { |
c4dcb155 | 1405 | if (separate_debug_file_debug) |
22068491 TT |
1406 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1407 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1408 | |
5b5d99cf | 1409 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1410 | std::string debugfile = dir; |
1411 | debugfile += debuglink; | |
5b5d99cf | 1412 | |
32a0e547 | 1413 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1414 | return debugfile; |
5417f6dc | 1415 | |
5b5d99cf | 1416 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1417 | debugfile = dir; |
1418 | debugfile += DEBUG_SUBDIRECTORY; | |
1419 | debugfile += "/"; | |
1420 | debugfile += debuglink; | |
5b5d99cf | 1421 | |
32a0e547 | 1422 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1423 | return debugfile; |
5417f6dc | 1424 | |
24ddea62 | 1425 | /* Then try in the global debugfile directories. |
f888f159 | 1426 | |
24ddea62 JK |
1427 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1428 | cause "/..." lookups. */ | |
5417f6dc | 1429 | |
5d36dfb9 AU |
1430 | bool target_prefix = startswith (dir, "target:"); |
1431 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1432 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1433 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
f62318e9 | 1434 | gdb::unique_xmalloc_ptr<char> canon_sysroot = gdb_realpath (gdb_sysroot); |
24ddea62 | 1435 | |
5f2459c2 EZ |
1436 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1437 | convert the drive letter into a one-letter directory, so that the | |
1438 | file name resulting from splicing below will be valid. | |
1439 | ||
1440 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1441 | There are various remote-debugging scenarios where such a | |
1442 | transformation of the drive letter might be required when GDB runs | |
1443 | on a Posix host, see | |
1444 | ||
1445 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1446 | ||
85102364 | 1447 | If some of those scenarios need to be supported, we will need to |
5f2459c2 EZ |
1448 | use a different condition for HAS_DRIVE_SPEC and a different macro |
1449 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1450 | std::string drive; | |
1451 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1452 | { | |
1453 | drive = dir_notarget[0]; | |
1454 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1455 | } | |
1456 | ||
e80aaf61 | 1457 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1458 | { |
5d36dfb9 AU |
1459 | debugfile = target_prefix ? "target:" : ""; |
1460 | debugfile += debugdir.get (); | |
a8dbfd58 | 1461 | debugfile += "/"; |
5f2459c2 | 1462 | debugfile += drive; |
5d36dfb9 | 1463 | debugfile += dir_notarget; |
a8dbfd58 | 1464 | debugfile += debuglink; |
aa28a74e | 1465 | |
32a0e547 | 1466 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1467 | return debugfile; |
24ddea62 | 1468 | |
f62318e9 JB |
1469 | const char *base_path = NULL; |
1470 | if (canon_dir != NULL) | |
1471 | { | |
1472 | if (canon_sysroot.get () != NULL) | |
1473 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1474 | else | |
1475 | base_path = child_path (gdb_sysroot, canon_dir); | |
1476 | } | |
1477 | if (base_path != NULL) | |
24ddea62 | 1478 | { |
402d2bfe JB |
1479 | /* If the file is in the sysroot, try using its base path in |
1480 | the global debugfile directory. */ | |
5d36dfb9 AU |
1481 | debugfile = target_prefix ? "target:" : ""; |
1482 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1483 | debugfile += "/"; |
1484 | debugfile += base_path; | |
a8dbfd58 SM |
1485 | debugfile += "/"; |
1486 | debugfile += debuglink; | |
24ddea62 | 1487 | |
402d2bfe JB |
1488 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1489 | return debugfile; | |
1490 | ||
1491 | /* If the file is in the sysroot, try using its base path in | |
1492 | the sysroot's global debugfile directory. */ | |
1493 | debugfile = target_prefix ? "target:" : ""; | |
1494 | debugfile += gdb_sysroot; | |
1495 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1496 | debugfile += "/"; |
1497 | debugfile += base_path; | |
402d2bfe JB |
1498 | debugfile += "/"; |
1499 | debugfile += debuglink; | |
1500 | ||
32a0e547 | 1501 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1502 | return debugfile; |
24ddea62 | 1503 | } |
402d2bfe | 1504 | |
aa28a74e | 1505 | } |
f888f159 | 1506 | |
a8dbfd58 | 1507 | return std::string (); |
1db33378 PP |
1508 | } |
1509 | ||
7edbb660 | 1510 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1511 | If there were no directory separators in PATH, PATH will be empty |
1512 | string on return. */ | |
1513 | ||
1514 | static void | |
1515 | terminate_after_last_dir_separator (char *path) | |
1516 | { | |
1517 | int i; | |
1518 | ||
1519 | /* Strip off the final filename part, leaving the directory name, | |
1520 | followed by a slash. The directory can be relative or absolute. */ | |
1521 | for (i = strlen(path) - 1; i >= 0; i--) | |
1522 | if (IS_DIR_SEPARATOR (path[i])) | |
1523 | break; | |
1524 | ||
1525 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1526 | path[i + 1] = '\0'; | |
1527 | } | |
1528 | ||
1529 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1530 | Returns pathname, or an empty string. */ |
1db33378 | 1531 | |
a8dbfd58 | 1532 | std::string |
1db33378 PP |
1533 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1534 | { | |
1db33378 | 1535 | unsigned long crc32; |
1db33378 | 1536 | |
5eae7aea TT |
1537 | gdb::unique_xmalloc_ptr<char> debuglink |
1538 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1539 | |
1540 | if (debuglink == NULL) | |
1541 | { | |
1542 | /* There's no separate debug info, hence there's no way we could | |
1543 | load it => no warning. */ | |
a8dbfd58 | 1544 | return std::string (); |
1db33378 PP |
1545 | } |
1546 | ||
5eae7aea TT |
1547 | std::string dir = objfile_name (objfile); |
1548 | terminate_after_last_dir_separator (&dir[0]); | |
1549 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1550 | |
a8dbfd58 SM |
1551 | std::string debugfile |
1552 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1553 | debuglink.get (), crc32, objfile); | |
1db33378 | 1554 | |
a8dbfd58 | 1555 | if (debugfile.empty ()) |
1db33378 | 1556 | { |
1db33378 PP |
1557 | /* For PR gdb/9538, try again with realpath (if different from the |
1558 | original). */ | |
1559 | ||
1560 | struct stat st_buf; | |
1561 | ||
4262abfb JK |
1562 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1563 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1564 | { |
5eae7aea TT |
1565 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1566 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1567 | if (symlink_dir != NULL) |
1568 | { | |
5eae7aea TT |
1569 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1570 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1571 | { |
1572 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1573 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1574 | symlink_dir.get (), | |
1575 | debuglink.get (), | |
1db33378 PP |
1576 | crc32, |
1577 | objfile); | |
1578 | } | |
1579 | } | |
1580 | } | |
1db33378 | 1581 | } |
aa28a74e | 1582 | |
25522fae | 1583 | return debugfile; |
5b5d99cf JB |
1584 | } |
1585 | ||
97cbe998 SDJ |
1586 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1587 | simultaneously. */ | |
1588 | ||
1589 | static void | |
1590 | validate_readnow_readnever (objfile_flags flags) | |
1591 | { | |
1592 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1593 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1594 | } | |
1595 | ||
c906108c SS |
1596 | /* This is the symbol-file command. Read the file, analyze its |
1597 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1598 | the command is rather bizarre: |
1599 | ||
1600 | 1. The function buildargv implements various quoting conventions | |
1601 | which are undocumented and have little or nothing in common with | |
1602 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1603 | ||
1604 | 2. Options are used, which are not generally used in GDB (perhaps | |
1605 | "set mapped on", "set readnow on" would be better) | |
1606 | ||
1607 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1608 | conventions (because it is confusing and inconvenient). */ |
1609 | ||
1610 | void | |
1d8b34a7 | 1611 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1612 | { |
c906108c SS |
1613 | dont_repeat (); |
1614 | ||
1615 | if (args == NULL) | |
1616 | { | |
1adeb98a | 1617 | symbol_file_clear (from_tty); |
c906108c SS |
1618 | } |
1619 | else | |
1620 | { | |
b15cc25c | 1621 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1622 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1623 | char *name = NULL; |
40fc416f | 1624 | bool stop_processing_options = false; |
d4d429d5 | 1625 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1626 | int idx; |
1627 | char *arg; | |
cb2f3a29 | 1628 | |
ecf45d2c SL |
1629 | if (from_tty) |
1630 | add_flags |= SYMFILE_VERBOSE; | |
1631 | ||
773a1edc | 1632 | gdb_argv built_argv (args); |
40fc416f | 1633 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1634 | { |
40fc416f | 1635 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1636 | { |
40fc416f SDJ |
1637 | if (name == NULL) |
1638 | name = arg; | |
1639 | else | |
1640 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1641 | } |
40fc416f SDJ |
1642 | else if (strcmp (arg, "-readnow") == 0) |
1643 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1644 | else if (strcmp (arg, "-readnever") == 0) |
1645 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1646 | else if (strcmp (arg, "-o") == 0) |
1647 | { | |
1648 | arg = built_argv[++idx]; | |
1649 | if (arg == NULL) | |
1650 | error (_("Missing argument to -o")); | |
1651 | ||
1652 | offset = parse_and_eval_address (arg); | |
1653 | } | |
40fc416f SDJ |
1654 | else if (strcmp (arg, "--") == 0) |
1655 | stop_processing_options = true; | |
1656 | else | |
1657 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1658 | } |
1659 | ||
1660 | if (name == NULL) | |
cb2f3a29 | 1661 | error (_("no symbol file name was specified")); |
40fc416f | 1662 | |
97cbe998 SDJ |
1663 | validate_readnow_readnever (flags); |
1664 | ||
ea142fbf AH |
1665 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1666 | (Position Independent Executable) main symbol file will only be | |
1667 | computed by the solib_create_inferior_hook below. Without it, | |
1668 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1669 | displacement. */ | |
1670 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1671 | ||
d4d429d5 | 1672 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1673 | |
1674 | solib_create_inferior_hook (from_tty); | |
1675 | ||
1676 | /* Now it's safe to re-add the breakpoints. */ | |
1677 | breakpoint_re_set (); | |
c906108c SS |
1678 | } |
1679 | } | |
1680 | ||
1681 | /* Set the initial language. | |
1682 | ||
cb2f3a29 MK |
1683 | FIXME: A better solution would be to record the language in the |
1684 | psymtab when reading partial symbols, and then use it (if known) to | |
1685 | set the language. This would be a win for formats that encode the | |
1686 | language in an easily discoverable place, such as DWARF. For | |
1687 | stabs, we can jump through hoops looking for specially named | |
1688 | symbols or try to intuit the language from the specific type of | |
1689 | stabs we find, but we can't do that until later when we read in | |
1690 | full symbols. */ | |
c906108c | 1691 | |
8b60591b | 1692 | void |
fba45db2 | 1693 | set_initial_language (void) |
c906108c | 1694 | { |
9e6c82ad | 1695 | enum language lang = main_language (); |
c906108c | 1696 | |
9e6c82ad | 1697 | if (lang == language_unknown) |
01f8c46d | 1698 | { |
cd215b2e | 1699 | const char *name = main_name (); |
d12307c1 | 1700 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1701 | |
bf6d8a91 TT |
1702 | if (sym != NULL) |
1703 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1704 | } |
cb2f3a29 | 1705 | |
ccefe4c4 TT |
1706 | if (lang == language_unknown) |
1707 | { | |
1708 | /* Make C the default language */ | |
1709 | lang = language_c; | |
c906108c | 1710 | } |
ccefe4c4 TT |
1711 | |
1712 | set_language (lang); | |
1713 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1714 | } |
1715 | ||
cb2f3a29 MK |
1716 | /* Open the file specified by NAME and hand it off to BFD for |
1717 | preliminary analysis. Return a newly initialized bfd *, which | |
1718 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1719 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1720 | |
192b62ce | 1721 | gdb_bfd_ref_ptr |
97a41605 | 1722 | symfile_bfd_open (const char *name) |
c906108c | 1723 | { |
97a41605 | 1724 | int desc = -1; |
c906108c | 1725 | |
e0cc99a6 | 1726 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1727 | if (!is_target_filename (name)) |
f1838a98 | 1728 | { |
ee0c3293 | 1729 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1730 | |
97a41605 GB |
1731 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1732 | desc = openp (getenv ("PATH"), | |
1733 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1734 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1735 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1736 | if (desc < 0) |
1737 | { | |
ee0c3293 | 1738 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1739 | |
ee0c3293 | 1740 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1741 | desc = openp (getenv ("PATH"), |
1742 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1743 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1744 | } | |
c906108c | 1745 | #endif |
97a41605 | 1746 | if (desc < 0) |
ee0c3293 | 1747 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1748 | |
e0cc99a6 | 1749 | name = absolute_name.get (); |
97a41605 | 1750 | } |
c906108c | 1751 | |
192b62ce TT |
1752 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1753 | if (sym_bfd == NULL) | |
faab9922 JK |
1754 | error (_("`%s': can't open to read symbols: %s."), name, |
1755 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1756 | |
192b62ce TT |
1757 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1758 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1759 | |
192b62ce TT |
1760 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1761 | error (_("`%s': can't read symbols: %s."), name, | |
1762 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1763 | |
1764 | return sym_bfd; | |
c906108c SS |
1765 | } |
1766 | ||
cb2f3a29 MK |
1767 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1768 | the section was not found. */ | |
1769 | ||
0e931cf0 | 1770 | int |
a121b7c1 | 1771 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1772 | { |
1773 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1774 | |
0e931cf0 JB |
1775 | if (sect) |
1776 | return sect->index; | |
1777 | else | |
1778 | return -1; | |
1779 | } | |
1780 | ||
c256e171 DE |
1781 | /* Link SF into the global symtab_fns list. |
1782 | FLAVOUR is the file format that SF handles. | |
1783 | Called on startup by the _initialize routine in each object file format | |
1784 | reader, to register information about each format the reader is prepared | |
1785 | to handle. */ | |
c906108c SS |
1786 | |
1787 | void | |
c256e171 | 1788 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1789 | { |
905014d7 | 1790 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1791 | } |
1792 | ||
cb2f3a29 MK |
1793 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1794 | either returns or calls error(). The result is an initialized | |
1795 | struct sym_fns in the objfile structure, that contains cached | |
1796 | information about the symbol file. */ | |
c906108c | 1797 | |
00b5771c | 1798 | static const struct sym_fns * |
31d99776 | 1799 | find_sym_fns (bfd *abfd) |
c906108c | 1800 | { |
31d99776 | 1801 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1802 | |
75245b24 MS |
1803 | if (our_flavour == bfd_target_srec_flavour |
1804 | || our_flavour == bfd_target_ihex_flavour | |
1805 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1806 | return NULL; /* No symbols. */ |
75245b24 | 1807 | |
905014d7 SM |
1808 | for (const registered_sym_fns &rsf : symtab_fns) |
1809 | if (our_flavour == rsf.sym_flavour) | |
1810 | return rsf.sym_fns; | |
cb2f3a29 | 1811 | |
8a3fe4f8 | 1812 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1813 | bfd_get_target (abfd)); |
c906108c SS |
1814 | } |
1815 | \f | |
cb2f3a29 | 1816 | |
c906108c SS |
1817 | /* This function runs the load command of our current target. */ |
1818 | ||
1819 | static void | |
5fed81ff | 1820 | load_command (const char *arg, int from_tty) |
c906108c | 1821 | { |
e5cc9f32 JB |
1822 | dont_repeat (); |
1823 | ||
4487aabf PA |
1824 | /* The user might be reloading because the binary has changed. Take |
1825 | this opportunity to check. */ | |
1826 | reopen_exec_file (); | |
1827 | reread_symbols (); | |
1828 | ||
b577b6af | 1829 | std::string temp; |
c906108c | 1830 | if (arg == NULL) |
1986bccd | 1831 | { |
b577b6af | 1832 | const char *parg, *prev; |
1986bccd | 1833 | |
b577b6af | 1834 | arg = get_exec_file (1); |
1986bccd | 1835 | |
b577b6af TT |
1836 | /* We may need to quote this string so buildargv can pull it |
1837 | apart. */ | |
1838 | prev = parg = arg; | |
1986bccd AS |
1839 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1840 | { | |
b577b6af TT |
1841 | temp.append (prev, parg - prev); |
1842 | prev = parg++; | |
1843 | temp.push_back ('\\'); | |
1986bccd | 1844 | } |
b577b6af TT |
1845 | /* If we have not copied anything yet, then we didn't see a |
1846 | character to quote, and we can just leave ARG unchanged. */ | |
1847 | if (!temp.empty ()) | |
1986bccd | 1848 | { |
b577b6af TT |
1849 | temp.append (prev); |
1850 | arg = temp.c_str (); | |
1986bccd AS |
1851 | } |
1852 | } | |
1853 | ||
c906108c | 1854 | target_load (arg, from_tty); |
2889e661 JB |
1855 | |
1856 | /* After re-loading the executable, we don't really know which | |
1857 | overlays are mapped any more. */ | |
1858 | overlay_cache_invalid = 1; | |
c906108c SS |
1859 | } |
1860 | ||
1861 | /* This version of "load" should be usable for any target. Currently | |
1862 | it is just used for remote targets, not inftarg.c or core files, | |
1863 | on the theory that only in that case is it useful. | |
1864 | ||
1865 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1866 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1867 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1868 | performance compares. */ | |
917317f4 | 1869 | |
917317f4 JM |
1870 | static int validate_download = 0; |
1871 | ||
e4f9b4d5 MS |
1872 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1873 | ||
1874 | static void | |
1875 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1876 | { | |
19ba03f4 | 1877 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1878 | |
fd361982 | 1879 | *sum += bfd_section_size (asec); |
e4f9b4d5 MS |
1880 | } |
1881 | ||
a76d924d | 1882 | /* Opaque data for load_progress. */ |
55089490 TT |
1883 | struct load_progress_data |
1884 | { | |
a76d924d | 1885 | /* Cumulative data. */ |
55089490 TT |
1886 | unsigned long write_count = 0; |
1887 | unsigned long data_count = 0; | |
1888 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1889 | }; |
1890 | ||
1891 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1892 | struct load_progress_section_data |
1893 | { | |
1894 | load_progress_section_data (load_progress_data *cumulative_, | |
1895 | const char *section_name_, ULONGEST section_size_, | |
1896 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1897 | : cumulative (cumulative_), section_name (section_name_), | |
1898 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1899 | {} | |
1900 | ||
a76d924d | 1901 | struct load_progress_data *cumulative; |
cf7a04e8 | 1902 | |
a76d924d | 1903 | /* Per-section data. */ |
cf7a04e8 | 1904 | const char *section_name; |
55089490 | 1905 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1906 | ULONGEST section_size; |
1907 | CORE_ADDR lma; | |
1908 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1909 | }; |
1910 | ||
55089490 TT |
1911 | /* Opaque data for load_section_callback. */ |
1912 | struct load_section_data | |
1913 | { | |
1914 | load_section_data (load_progress_data *progress_data_) | |
1915 | : progress_data (progress_data_) | |
1916 | {} | |
1917 | ||
1918 | ~load_section_data () | |
1919 | { | |
1920 | for (auto &&request : requests) | |
1921 | { | |
1922 | xfree (request.data); | |
1923 | delete ((load_progress_section_data *) request.baton); | |
1924 | } | |
1925 | } | |
1926 | ||
1927 | CORE_ADDR load_offset = 0; | |
1928 | struct load_progress_data *progress_data; | |
1929 | std::vector<struct memory_write_request> requests; | |
1930 | }; | |
1931 | ||
a76d924d | 1932 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1933 | |
1934 | static void | |
1935 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1936 | { | |
19ba03f4 SM |
1937 | struct load_progress_section_data *args |
1938 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1939 | struct load_progress_data *totals; |
1940 | ||
1941 | if (args == NULL) | |
1942 | /* Writing padding data. No easy way to get at the cumulative | |
1943 | stats, so just ignore this. */ | |
1944 | return; | |
1945 | ||
1946 | totals = args->cumulative; | |
1947 | ||
1948 | if (bytes == 0 && args->section_sent == 0) | |
1949 | { | |
1950 | /* The write is just starting. Let the user know we've started | |
1951 | this section. */ | |
112e8700 SM |
1952 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1953 | args->section_name, | |
1954 | hex_string (args->section_size), | |
1955 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1956 | return; |
1957 | } | |
cf7a04e8 DJ |
1958 | |
1959 | if (validate_download) | |
1960 | { | |
1961 | /* Broken memories and broken monitors manifest themselves here | |
1962 | when bring new computers to life. This doubles already slow | |
1963 | downloads. */ | |
1964 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1965 | might add a verify_memory() method to the target vector and | |
1966 | then use that. remote.c could implement that method using | |
1967 | the ``qCRC'' packet. */ | |
0efef640 | 1968 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1969 | |
0efef640 | 1970 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1971 | error (_("Download verify read failed at %s"), |
f5656ead | 1972 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1973 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1974 | error (_("Download verify compare failed at %s"), |
f5656ead | 1975 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1976 | } |
a76d924d | 1977 | totals->data_count += bytes; |
cf7a04e8 DJ |
1978 | args->lma += bytes; |
1979 | args->buffer += bytes; | |
a76d924d | 1980 | totals->write_count += 1; |
cf7a04e8 | 1981 | args->section_sent += bytes; |
522002f9 | 1982 | if (check_quit_flag () |
cf7a04e8 DJ |
1983 | || (deprecated_ui_load_progress_hook != NULL |
1984 | && deprecated_ui_load_progress_hook (args->section_name, | |
1985 | args->section_sent))) | |
1986 | error (_("Canceled the download")); | |
1987 | ||
1988 | if (deprecated_show_load_progress != NULL) | |
1989 | deprecated_show_load_progress (args->section_name, | |
1990 | args->section_sent, | |
1991 | args->section_size, | |
a76d924d DJ |
1992 | totals->data_count, |
1993 | totals->total_size); | |
cf7a04e8 DJ |
1994 | } |
1995 | ||
e4f9b4d5 MS |
1996 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1997 | ||
1998 | static void | |
1999 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2000 | { | |
19ba03f4 | 2001 | struct load_section_data *args = (struct load_section_data *) data; |
fd361982 AM |
2002 | bfd_size_type size = bfd_section_size (asec); |
2003 | const char *sect_name = bfd_section_name (asec); | |
e4f9b4d5 | 2004 | |
fd361982 | 2005 | if ((bfd_section_flags (asec) & SEC_LOAD) == 0) |
cf7a04e8 | 2006 | return; |
e4f9b4d5 | 2007 | |
cf7a04e8 DJ |
2008 | if (size == 0) |
2009 | return; | |
e4f9b4d5 | 2010 | |
fd361982 | 2011 | ULONGEST begin = bfd_section_lma (asec) + args->load_offset; |
55089490 TT |
2012 | ULONGEST end = begin + size; |
2013 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 2014 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 2015 | |
55089490 TT |
2016 | load_progress_section_data *section_data |
2017 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
2018 | begin, buffer); | |
cf7a04e8 | 2019 | |
55089490 | 2020 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
2021 | } |
2022 | ||
dcb07cfa PA |
2023 | static void print_transfer_performance (struct ui_file *stream, |
2024 | unsigned long data_count, | |
2025 | unsigned long write_count, | |
2026 | std::chrono::steady_clock::duration d); | |
2027 | ||
854f6088 SM |
2028 | /* See symfile.h. */ |
2029 | ||
c906108c | 2030 | void |
9cbe5fff | 2031 | generic_load (const char *args, int from_tty) |
c906108c | 2032 | { |
a76d924d | 2033 | struct load_progress_data total_progress; |
55089490 | 2034 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2035 | struct ui_out *uiout = current_uiout; |
a76d924d | 2036 | |
d1a41061 PP |
2037 | if (args == NULL) |
2038 | error_no_arg (_("file to load")); | |
1986bccd | 2039 | |
773a1edc | 2040 | gdb_argv argv (args); |
1986bccd | 2041 | |
ee0c3293 | 2042 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2043 | |
2044 | if (argv[1] != NULL) | |
917317f4 | 2045 | { |
f698ca8e | 2046 | const char *endptr; |
ba5f2f8a | 2047 | |
f698ca8e | 2048 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2049 | |
2050 | /* If the last word was not a valid number then | |
2051 | treat it as a file name with spaces in. */ | |
2052 | if (argv[1] == endptr) | |
2053 | error (_("Invalid download offset:%s."), argv[1]); | |
2054 | ||
2055 | if (argv[2] != NULL) | |
2056 | error (_("Too many parameters.")); | |
917317f4 | 2057 | } |
c906108c | 2058 | |
c378eb4e | 2059 | /* Open the file for loading. */ |
ee0c3293 | 2060 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2061 | if (loadfile_bfd == NULL) |
ee0c3293 | 2062 | perror_with_name (filename.get ()); |
917317f4 | 2063 | |
192b62ce | 2064 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2065 | { |
ee0c3293 | 2066 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2067 | bfd_errmsg (bfd_get_error ())); |
2068 | } | |
c5aa993b | 2069 | |
192b62ce | 2070 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2071 | (void *) &total_progress.total_size); |
2072 | ||
192b62ce | 2073 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2074 | |
dcb07cfa PA |
2075 | using namespace std::chrono; |
2076 | ||
2077 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2078 | |
a76d924d DJ |
2079 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2080 | load_progress) != 0) | |
2081 | error (_("Load failed")); | |
c906108c | 2082 | |
dcb07cfa | 2083 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2084 | |
55089490 | 2085 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2086 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2087 | uiout->text ("Start address "); |
ca8d69be | 2088 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2089 | uiout->text (", load size "); |
1f77b012 | 2090 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2091 | uiout->text ("\n"); |
fb14de7b | 2092 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2093 | |
38963c97 DJ |
2094 | /* Reset breakpoints, now that we have changed the load image. For |
2095 | instance, breakpoints may have been set (or reset, by | |
2096 | post_create_inferior) while connected to the target but before we | |
2097 | loaded the program. In that case, the prologue analyzer could | |
2098 | have read instructions from the target to find the right | |
2099 | breakpoint locations. Loading has changed the contents of that | |
2100 | memory. */ | |
2101 | ||
2102 | breakpoint_re_set (); | |
2103 | ||
a76d924d DJ |
2104 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2105 | total_progress.write_count, | |
dcb07cfa | 2106 | end_time - start_time); |
c906108c SS |
2107 | } |
2108 | ||
dcb07cfa PA |
2109 | /* Report on STREAM the performance of a memory transfer operation, |
2110 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2111 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2112 | that information is not available. TIME is how long the operation | |
2113 | lasted. */ | |
c906108c | 2114 | |
dcb07cfa | 2115 | static void |
d9fcf2fb | 2116 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2117 | unsigned long data_count, |
2118 | unsigned long write_count, | |
dcb07cfa | 2119 | std::chrono::steady_clock::duration time) |
917317f4 | 2120 | { |
dcb07cfa | 2121 | using namespace std::chrono; |
79a45e25 | 2122 | struct ui_out *uiout = current_uiout; |
2b71414d | 2123 | |
dcb07cfa | 2124 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2125 | |
112e8700 | 2126 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2127 | if (ms.count () > 0) |
8b93c638 | 2128 | { |
dcb07cfa | 2129 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2130 | |
112e8700 | 2131 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2132 | { |
1f77b012 | 2133 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2134 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2135 | } |
2136 | else if (rate < 1024) | |
2137 | { | |
1f77b012 | 2138 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2139 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2140 | } |
2141 | else | |
2142 | { | |
1f77b012 | 2143 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2144 | uiout->text (" KB/sec"); |
9f43d28c | 2145 | } |
8b93c638 JM |
2146 | } |
2147 | else | |
2148 | { | |
1f77b012 | 2149 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2150 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2151 | } |
2152 | if (write_count > 0) | |
2153 | { | |
112e8700 | 2154 | uiout->text (", "); |
1f77b012 | 2155 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2156 | uiout->text (" bytes/write"); |
8b93c638 | 2157 | } |
112e8700 | 2158 | uiout->text (".\n"); |
c906108c SS |
2159 | } |
2160 | ||
291f9a96 PT |
2161 | /* Add an OFFSET to the start address of each section in OBJF, except |
2162 | sections that were specified in ADDRS. */ | |
2163 | ||
2164 | static void | |
2165 | set_objfile_default_section_offset (struct objfile *objf, | |
2166 | const section_addr_info &addrs, | |
2167 | CORE_ADDR offset) | |
2168 | { | |
2169 | /* Add OFFSET to all sections by default. */ | |
2170 | std::vector<struct section_offsets> offsets (objf->num_sections, | |
027a4c30 | 2171 | { { offset } }); |
291f9a96 PT |
2172 | |
2173 | /* Create sorted lists of all sections in ADDRS as well as all | |
2174 | sections in OBJF. */ | |
2175 | ||
2176 | std::vector<const struct other_sections *> addrs_sorted | |
2177 | = addrs_section_sort (addrs); | |
2178 | ||
2179 | section_addr_info objf_addrs | |
2180 | = build_section_addr_info_from_objfile (objf); | |
2181 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2182 | = addrs_section_sort (objf_addrs); | |
2183 | ||
2184 | /* Walk the BFD section list, and if a matching section is found in | |
2185 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2186 | unchanged. | |
2187 | ||
2188 | Note that both lists may contain multiple sections with the same | |
2189 | name, and then the sections from ADDRS are matched in BFD order | |
2190 | (thanks to sectindex). */ | |
2191 | ||
2192 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2193 | = addrs_sorted.begin (); | |
ff27d073 | 2194 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2195 | { |
2196 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2197 | int cmp = -1; | |
2198 | ||
2199 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2200 | { | |
2201 | const struct other_sections *sect = *addrs_sorted_iter; | |
2202 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2203 | cmp = strcmp (sect_name, objf_name); | |
2204 | if (cmp <= 0) | |
2205 | ++addrs_sorted_iter; | |
2206 | } | |
2207 | ||
2208 | if (cmp == 0) | |
2209 | offsets[objf_sect->sectindex].offsets[0] = 0; | |
2210 | } | |
2211 | ||
2212 | /* Apply the new section offsets. */ | |
2213 | objfile_relocate (objf, offsets.data ()); | |
2214 | } | |
2215 | ||
c906108c SS |
2216 | /* This function allows the addition of incrementally linked object files. |
2217 | It does not modify any state in the target, only in the debugger. */ | |
2218 | ||
c906108c | 2219 | static void |
2cf311eb | 2220 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2221 | { |
5af949e3 | 2222 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2223 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2224 | char *arg; |
2acceee2 | 2225 | int argcnt = 0; |
76ad5e1e | 2226 | struct objfile *objf; |
b15cc25c PA |
2227 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2228 | symfile_add_flags add_flags = 0; | |
2229 | ||
2230 | if (from_tty) | |
2231 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2232 | |
a39a16c4 | 2233 | struct sect_opt |
2acceee2 | 2234 | { |
a121b7c1 PA |
2235 | const char *name; |
2236 | const char *value; | |
a39a16c4 | 2237 | }; |
db162d44 | 2238 | |
40fc416f SDJ |
2239 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2240 | bool stop_processing_options = false; | |
291f9a96 | 2241 | CORE_ADDR offset = 0; |
c5aa993b | 2242 | |
c906108c SS |
2243 | dont_repeat (); |
2244 | ||
2245 | if (args == NULL) | |
8a3fe4f8 | 2246 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2247 | |
40fc416f | 2248 | bool seen_addr = false; |
291f9a96 | 2249 | bool seen_offset = false; |
773a1edc | 2250 | gdb_argv argv (args); |
db162d44 | 2251 | |
5b96932b AS |
2252 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2253 | { | |
40fc416f | 2254 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2255 | { |
40fc416f | 2256 | if (filename == NULL) |
41dc8db8 | 2257 | { |
40fc416f SDJ |
2258 | /* First non-option argument is always the filename. */ |
2259 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2260 | } |
40fc416f | 2261 | else if (!seen_addr) |
41dc8db8 | 2262 | { |
40fc416f SDJ |
2263 | /* The second non-option argument is always the text |
2264 | address at which to load the program. */ | |
2265 | sect_opts[0].value = arg; | |
2266 | seen_addr = true; | |
41dc8db8 MB |
2267 | } |
2268 | else | |
02ca603a | 2269 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2270 | } |
40fc416f SDJ |
2271 | else if (strcmp (arg, "-readnow") == 0) |
2272 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2273 | else if (strcmp (arg, "-readnever") == 0) |
2274 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2275 | else if (strcmp (arg, "-s") == 0) |
2276 | { | |
2277 | if (argv[argcnt + 1] == NULL) | |
2278 | error (_("Missing section name after \"-s\"")); | |
2279 | else if (argv[argcnt + 2] == NULL) | |
2280 | error (_("Missing section address after \"-s\"")); | |
2281 | ||
2282 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2283 | ||
2284 | sect_opts.push_back (sect); | |
2285 | argcnt += 2; | |
2286 | } | |
291f9a96 PT |
2287 | else if (strcmp (arg, "-o") == 0) |
2288 | { | |
2289 | arg = argv[++argcnt]; | |
2290 | if (arg == NULL) | |
2291 | error (_("Missing argument to -o")); | |
2292 | ||
2293 | offset = parse_and_eval_address (arg); | |
2294 | seen_offset = true; | |
2295 | } | |
40fc416f SDJ |
2296 | else if (strcmp (arg, "--") == 0) |
2297 | stop_processing_options = true; | |
2298 | else | |
2299 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2300 | } |
c906108c | 2301 | |
40fc416f SDJ |
2302 | if (filename == NULL) |
2303 | error (_("You must provide a filename to be loaded.")); | |
2304 | ||
97cbe998 SDJ |
2305 | validate_readnow_readnever (flags); |
2306 | ||
c378eb4e | 2307 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2308 | a sect_addr_info structure to be passed around to other |
2309 | functions. We have to split this up into separate print | |
bb599908 | 2310 | statements because hex_string returns a local static |
c378eb4e | 2311 | string. */ |
5417f6dc | 2312 | |
ed6dfe51 | 2313 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2314 | filename.get ()); |
37e136b1 | 2315 | section_addr_info section_addrs; |
ed6dfe51 PT |
2316 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2317 | if (!seen_addr) | |
2318 | ++it; | |
2319 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2320 | { |
db162d44 | 2321 | CORE_ADDR addr; |
ed6dfe51 PT |
2322 | const char *val = it->value; |
2323 | const char *sec = it->name; | |
5417f6dc | 2324 | |
ed6dfe51 PT |
2325 | if (section_addrs.empty ()) |
2326 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2327 | addr = parse_and_eval_address (val); |
db162d44 | 2328 | |
db162d44 | 2329 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2330 | entered on the command line. Every array element is |
2331 | assigned an ascending section index to preserve the above | |
2332 | order over an unstable sorting algorithm. This dummy | |
2333 | index is not used for any other purpose. | |
2334 | */ | |
2335 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2336 | printf_filtered ("\t%s_addr = %s\n", sec, |
2337 | paddress (gdbarch, addr)); | |
db162d44 | 2338 | |
5417f6dc | 2339 | /* The object's sections are initialized when a |
db162d44 | 2340 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2341 | This happens in reread_symbols. |
db162d44 EZ |
2342 | At this point, we don't know what file type this is, |
2343 | so we can't determine what section names are valid. */ | |
2acceee2 | 2344 | } |
291f9a96 PT |
2345 | if (seen_offset) |
2346 | printf_unfiltered (_("%s offset by %s\n"), | |
2347 | (section_addrs.empty () | |
2348 | ? _(" with all sections") | |
2349 | : _("with other sections")), | |
2350 | paddress (gdbarch, offset)); | |
2351 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2352 | printf_unfiltered ("\n"); |
db162d44 | 2353 | |
2acceee2 | 2354 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2355 | error (_("Not confirmed.")); |
c906108c | 2356 | |
37e136b1 TT |
2357 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2358 | flags); | |
f5686554 TT |
2359 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2360 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2361 | filename.get ()); | |
76ad5e1e | 2362 | |
291f9a96 PT |
2363 | if (seen_offset) |
2364 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2365 | ||
76ad5e1e | 2366 | add_target_sections_of_objfile (objf); |
c906108c SS |
2367 | |
2368 | /* Getting new symbols may change our opinion about what is | |
2369 | frameless. */ | |
2370 | reinit_frame_cache (); | |
2371 | } | |
2372 | \f | |
70992597 | 2373 | |
63644780 NB |
2374 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2375 | ||
2376 | static void | |
2cf311eb | 2377 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2378 | { |
63644780 | 2379 | struct objfile *objf = NULL; |
63644780 | 2380 | struct program_space *pspace = current_program_space; |
63644780 NB |
2381 | |
2382 | dont_repeat (); | |
2383 | ||
2384 | if (args == NULL) | |
2385 | error (_("remove-symbol-file: no symbol file provided")); | |
2386 | ||
773a1edc | 2387 | gdb_argv argv (args); |
63644780 NB |
2388 | |
2389 | if (strcmp (argv[0], "-a") == 0) | |
2390 | { | |
2391 | /* Interpret the next argument as an address. */ | |
2392 | CORE_ADDR addr; | |
2393 | ||
2394 | if (argv[1] == NULL) | |
2395 | error (_("Missing address argument")); | |
2396 | ||
2397 | if (argv[2] != NULL) | |
2398 | error (_("Junk after %s"), argv[1]); | |
2399 | ||
2400 | addr = parse_and_eval_address (argv[1]); | |
2401 | ||
2030c079 | 2402 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2403 | { |
aed57c53 TT |
2404 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2405 | && (objfile->flags & OBJF_SHARED) != 0 | |
2406 | && objfile->pspace == pspace | |
2407 | && is_addr_in_objfile (addr, objfile)) | |
2408 | { | |
2409 | objf = objfile; | |
2410 | break; | |
2411 | } | |
63644780 NB |
2412 | } |
2413 | } | |
2414 | else if (argv[0] != NULL) | |
2415 | { | |
2416 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2417 | |
2418 | if (argv[1] != NULL) | |
2419 | error (_("Junk after %s"), argv[0]); | |
2420 | ||
ee0c3293 | 2421 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2422 | |
2030c079 | 2423 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2424 | { |
aed57c53 TT |
2425 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2426 | && (objfile->flags & OBJF_SHARED) != 0 | |
2427 | && objfile->pspace == pspace | |
2428 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2429 | { | |
2430 | objf = objfile; | |
2431 | break; | |
2432 | } | |
63644780 NB |
2433 | } |
2434 | } | |
2435 | ||
2436 | if (objf == NULL) | |
2437 | error (_("No symbol file found")); | |
2438 | ||
2439 | if (from_tty | |
2440 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2441 | objfile_name (objf))) | |
2442 | error (_("Not confirmed.")); | |
2443 | ||
9e86da07 | 2444 | delete objf; |
63644780 | 2445 | clear_symtab_users (0); |
63644780 NB |
2446 | } |
2447 | ||
c906108c | 2448 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2449 | |
c906108c | 2450 | void |
fba45db2 | 2451 | reread_symbols (void) |
c906108c | 2452 | { |
c906108c | 2453 | long new_modtime; |
c906108c SS |
2454 | struct stat new_statbuf; |
2455 | int res; | |
4c404b8b | 2456 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2457 | |
bf227d61 | 2458 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2459 | { |
9cce227f TG |
2460 | if (objfile->obfd == NULL) |
2461 | continue; | |
2462 | ||
2463 | /* Separate debug objfiles are handled in the main objfile. */ | |
2464 | if (objfile->separate_debug_objfile_backlink) | |
2465 | continue; | |
2466 | ||
02aeec7b JB |
2467 | /* If this object is from an archive (what you usually create with |
2468 | `ar', often called a `static library' on most systems, though | |
2469 | a `shared library' on AIX is also an archive), then you should | |
2470 | stat on the archive name, not member name. */ | |
9cce227f TG |
2471 | if (objfile->obfd->my_archive) |
2472 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2473 | else | |
4262abfb | 2474 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2475 | if (res != 0) |
2476 | { | |
c378eb4e | 2477 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2478 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2479 | objfile_name (objfile)); | |
9cce227f TG |
2480 | continue; |
2481 | } | |
2482 | new_modtime = new_statbuf.st_mtime; | |
2483 | if (new_modtime != objfile->mtime) | |
2484 | { | |
9cce227f TG |
2485 | struct section_offsets *offsets; |
2486 | int num_offsets; | |
9cce227f | 2487 | |
22068491 TT |
2488 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2489 | objfile_name (objfile)); | |
9cce227f TG |
2490 | |
2491 | /* There are various functions like symbol_file_add, | |
2492 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2493 | appear to do what we want. But they have various other | |
2494 | effects which we *don't* want. So we just do stuff | |
2495 | ourselves. We don't worry about mapped files (for one thing, | |
2496 | any mapped file will be out of date). */ | |
2497 | ||
2498 | /* If we get an error, blow away this objfile (not sure if | |
2499 | that is the correct response for things like shared | |
2500 | libraries). */ | |
ed2b3126 TT |
2501 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2502 | ||
9cce227f | 2503 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2504 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2505 | |
0ba1096a KT |
2506 | if (exec_bfd != NULL |
2507 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2508 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2509 | { |
2510 | /* Reload EXEC_BFD without asking anything. */ | |
2511 | ||
2512 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2513 | } | |
2514 | ||
f6eeced0 JK |
2515 | /* Keep the calls order approx. the same as in free_objfile. */ |
2516 | ||
2517 | /* Free the separate debug objfiles. It will be | |
2518 | automatically recreated by sym_read. */ | |
2519 | free_objfile_separate_debug (objfile); | |
2520 | ||
7b71fc97 L |
2521 | /* Clear the stale source cache. */ |
2522 | forget_cached_source_info (); | |
2523 | ||
f6eeced0 JK |
2524 | /* Remove any references to this objfile in the global |
2525 | value lists. */ | |
2526 | preserve_values (objfile); | |
2527 | ||
2528 | /* Nuke all the state that we will re-read. Much of the following | |
2529 | code which sets things to NULL really is necessary to tell | |
2530 | other parts of GDB that there is nothing currently there. | |
2531 | ||
2532 | Try to keep the freeing order compatible with free_objfile. */ | |
2533 | ||
2534 | if (objfile->sf != NULL) | |
2535 | { | |
2536 | (*objfile->sf->sym_finish) (objfile); | |
2537 | } | |
2538 | ||
2539 | clear_objfile_data (objfile); | |
2540 | ||
e1507e95 | 2541 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2542 | { |
192b62ce | 2543 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
b16c44de | 2544 | const char *obfd_filename; |
a4453b7e TT |
2545 | |
2546 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2547 | /* Open the new BFD before freeing the old one, so that | |
2548 | the filename remains live. */ | |
192b62ce TT |
2549 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2550 | objfile->obfd = temp.release (); | |
e1507e95 | 2551 | if (objfile->obfd == NULL) |
192b62ce | 2552 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2553 | } |
2554 | ||
c0c9f665 | 2555 | std::string original_name = objfile->original_name; |
24ba069a | 2556 | |
9cce227f TG |
2557 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2558 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2559 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2560 | bfd_errmsg (bfd_get_error ())); |
2561 | ||
2562 | /* Save the offsets, we will nuke them with the rest of the | |
2563 | objfile_obstack. */ | |
2564 | num_offsets = objfile->num_sections; | |
2565 | offsets = ((struct section_offsets *) | |
2566 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2567 | memcpy (offsets, objfile->section_offsets, | |
2568 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2569 | ||
6d6a12bf | 2570 | objfile->reset_psymtabs (); |
41664b45 DG |
2571 | |
2572 | /* NB: after this call to obstack_free, objfiles_changed | |
2573 | will need to be called (see discussion below). */ | |
9cce227f TG |
2574 | obstack_free (&objfile->objfile_obstack, 0); |
2575 | objfile->sections = NULL; | |
43f3e411 | 2576 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2577 | objfile->template_symbols = NULL; |
cf250e36 | 2578 | objfile->static_links.reset (nullptr); |
9cce227f | 2579 | |
9cce227f TG |
2580 | /* obstack_init also initializes the obstack so it is |
2581 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2582 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2583 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2584 | |
846060df JB |
2585 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2586 | data on the objfile's obstack (if sharing data across | |
2587 | multiple users is not possible), so it's important to | |
2588 | do it *after* the obstack has been initialized. */ | |
2589 | set_objfile_per_bfd (objfile); | |
2590 | ||
224c3ddb | 2591 | objfile->original_name |
efba19b0 | 2592 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2593 | |
779bd270 DE |
2594 | /* Reset the sym_fns pointer. The ELF reader can change it |
2595 | based on whether .gdb_index is present, and we need it to | |
2596 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2597 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2598 | |
d82ea6a8 | 2599 | build_objfile_section_table (objfile); |
9cce227f TG |
2600 | |
2601 | /* We use the same section offsets as from last time. I'm not | |
2602 | sure whether that is always correct for shared libraries. */ | |
2603 | objfile->section_offsets = (struct section_offsets *) | |
2604 | obstack_alloc (&objfile->objfile_obstack, | |
2605 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2606 | memcpy (objfile->section_offsets, offsets, | |
2607 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2608 | objfile->num_sections = num_offsets; | |
2609 | ||
2610 | /* What the hell is sym_new_init for, anyway? The concept of | |
2611 | distinguishing between the main file and additional files | |
2612 | in this way seems rather dubious. */ | |
2613 | if (objfile == symfile_objfile) | |
c906108c | 2614 | { |
9cce227f | 2615 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2616 | } |
9cce227f TG |
2617 | |
2618 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2619 | clear_complaints (); |
608e2dbb TT |
2620 | |
2621 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2622 | |
2623 | /* We are about to read new symbols and potentially also | |
2624 | DWARF information. Some targets may want to pass addresses | |
2625 | read from DWARF DIE's through an adjustment function before | |
2626 | saving them, like MIPS, which may call into | |
2627 | "find_pc_section". When called, that function will make | |
2628 | use of per-objfile program space data. | |
2629 | ||
2630 | Since we discarded our section information above, we have | |
2631 | dangling pointers in the per-objfile program space data | |
2632 | structure. Force GDB to update the section mapping | |
2633 | information by letting it know the objfile has changed, | |
2634 | making the dangling pointers point to correct data | |
2635 | again. */ | |
2636 | ||
2637 | objfiles_changed (); | |
2638 | ||
608e2dbb | 2639 | read_symbols (objfile, 0); |
b11896a5 | 2640 | |
9cce227f | 2641 | if (!objfile_has_symbols (objfile)) |
c906108c | 2642 | { |
9cce227f | 2643 | wrap_here (""); |
22068491 | 2644 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2645 | wrap_here (""); |
c5aa993b | 2646 | } |
9cce227f TG |
2647 | |
2648 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2649 | clear_complaints (); |
9cce227f TG |
2650 | |
2651 | /* Getting new symbols may change our opinion about what is | |
2652 | frameless. */ | |
2653 | ||
2654 | reinit_frame_cache (); | |
2655 | ||
2656 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2657 | objfile_holder.release (); |
286526c1 | 2658 | defer_clear_users.release (); |
9cce227f TG |
2659 | |
2660 | /* If the mtime has changed between the time we set new_modtime | |
2661 | and now, we *want* this to be out of date, so don't call stat | |
2662 | again now. */ | |
2663 | objfile->mtime = new_modtime; | |
9cce227f | 2664 | init_entry_point_info (objfile); |
4ac39b97 | 2665 | |
4c404b8b | 2666 | new_objfiles.push_back (objfile); |
c906108c SS |
2667 | } |
2668 | } | |
c906108c | 2669 | |
4c404b8b | 2670 | if (!new_objfiles.empty ()) |
ea53e89f | 2671 | { |
c1e56572 | 2672 | clear_symtab_users (0); |
4ac39b97 JK |
2673 | |
2674 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2675 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2676 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2677 | for (auto iter : new_objfiles) |
c486b610 | 2678 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2679 | |
ea53e89f JB |
2680 | /* At least one objfile has changed, so we can consider that |
2681 | the executable we're debugging has changed too. */ | |
76727919 | 2682 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2683 | } |
c906108c | 2684 | } |
c906108c SS |
2685 | \f |
2686 | ||
593e3209 | 2687 | struct filename_language |
c5aa993b | 2688 | { |
593e3209 SM |
2689 | filename_language (const std::string &ext_, enum language lang_) |
2690 | : ext (ext_), lang (lang_) | |
2691 | {} | |
3fcf0b0d | 2692 | |
593e3209 SM |
2693 | std::string ext; |
2694 | enum language lang; | |
2695 | }; | |
c906108c | 2696 | |
593e3209 | 2697 | static std::vector<filename_language> filename_language_table; |
c906108c | 2698 | |
56618e20 TT |
2699 | /* See symfile.h. */ |
2700 | ||
2701 | void | |
2702 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2703 | { |
593e3209 | 2704 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2705 | } |
2706 | ||
2707 | static char *ext_args; | |
920d2a44 AC |
2708 | static void |
2709 | show_ext_args (struct ui_file *file, int from_tty, | |
2710 | struct cmd_list_element *c, const char *value) | |
2711 | { | |
3e43a32a MS |
2712 | fprintf_filtered (file, |
2713 | _("Mapping between filename extension " | |
2714 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2715 | value); |
2716 | } | |
c906108c SS |
2717 | |
2718 | static void | |
eb4c3f4a TT |
2719 | set_ext_lang_command (const char *args, |
2720 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2721 | { |
c906108c SS |
2722 | char *cp = ext_args; |
2723 | enum language lang; | |
2724 | ||
c378eb4e | 2725 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2726 | if (*cp != '.') |
8a3fe4f8 | 2727 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2728 | |
2729 | /* Find end of first arg. */ | |
c5aa993b | 2730 | while (*cp && !isspace (*cp)) |
c906108c SS |
2731 | cp++; |
2732 | ||
2733 | if (*cp == '\0') | |
3e43a32a MS |
2734 | error (_("'%s': two arguments required -- " |
2735 | "filename extension and language"), | |
c906108c SS |
2736 | ext_args); |
2737 | ||
c378eb4e | 2738 | /* Null-terminate first arg. */ |
c5aa993b | 2739 | *cp++ = '\0'; |
c906108c SS |
2740 | |
2741 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2742 | cp = skip_spaces (cp); |
c906108c SS |
2743 | |
2744 | if (*cp == '\0') | |
3e43a32a MS |
2745 | error (_("'%s': two arguments required -- " |
2746 | "filename extension and language"), | |
c906108c SS |
2747 | ext_args); |
2748 | ||
2749 | /* Lookup the language from among those we know. */ | |
2750 | lang = language_enum (cp); | |
2751 | ||
593e3209 | 2752 | auto it = filename_language_table.begin (); |
c906108c | 2753 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2754 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2755 | { |
593e3209 | 2756 | if (it->ext == ext_args) |
3fcf0b0d TT |
2757 | break; |
2758 | } | |
c906108c | 2759 | |
593e3209 | 2760 | if (it == filename_language_table.end ()) |
c906108c | 2761 | { |
c378eb4e | 2762 | /* New file extension. */ |
c906108c SS |
2763 | add_filename_language (ext_args, lang); |
2764 | } | |
2765 | else | |
2766 | { | |
c378eb4e | 2767 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2768 | |
2769 | /* if (from_tty) */ | |
2770 | /* query ("Really make files of type %s '%s'?", */ | |
2771 | /* ext_args, language_str (lang)); */ | |
2772 | ||
593e3209 | 2773 | it->lang = lang; |
c906108c SS |
2774 | } |
2775 | } | |
2776 | ||
2777 | static void | |
1d12d88f | 2778 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2779 | { |
a3f17187 | 2780 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2781 | printf_filtered ("\n\n"); |
593e3209 SM |
2782 | for (const filename_language &entry : filename_language_table) |
2783 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2784 | language_str (entry.lang)); | |
c906108c SS |
2785 | } |
2786 | ||
c906108c | 2787 | enum language |
dd786858 | 2788 | deduce_language_from_filename (const char *filename) |
c906108c | 2789 | { |
e6a959d6 | 2790 | const char *cp; |
c906108c SS |
2791 | |
2792 | if (filename != NULL) | |
2793 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2794 | { |
593e3209 SM |
2795 | for (const filename_language &entry : filename_language_table) |
2796 | if (entry.ext == cp) | |
2797 | return entry.lang; | |
3fcf0b0d | 2798 | } |
c906108c SS |
2799 | |
2800 | return language_unknown; | |
2801 | } | |
2802 | \f | |
43f3e411 DE |
2803 | /* Allocate and initialize a new symbol table. |
2804 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2805 | |
2806 | struct symtab * | |
43f3e411 | 2807 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2808 | { |
43f3e411 DE |
2809 | struct objfile *objfile = cust->objfile; |
2810 | struct symtab *symtab | |
2811 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2812 | |
19ba03f4 | 2813 | symtab->filename |
25629dfd TT |
2814 | = ((const char *) objfile->per_bfd->filename_cache.insert |
2815 | (filename, strlen (filename) + 1)); | |
c5aa993b JM |
2816 | symtab->fullname = NULL; |
2817 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2818 | |
db0fec5c DE |
2819 | /* This can be very verbose with lots of headers. |
2820 | Only print at higher debug levels. */ | |
2821 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2822 | { |
2823 | /* Be a bit clever with debugging messages, and don't print objfile | |
2824 | every time, only when it changes. */ | |
2825 | static char *last_objfile_name = NULL; | |
2826 | ||
2827 | if (last_objfile_name == NULL | |
4262abfb | 2828 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2829 | { |
2830 | xfree (last_objfile_name); | |
4262abfb | 2831 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2832 | fprintf_filtered (gdb_stdlog, |
2833 | "Creating one or more symtabs for objfile %s ...\n", | |
2834 | last_objfile_name); | |
45cfd468 | 2835 | } |
22068491 TT |
2836 | fprintf_filtered (gdb_stdlog, |
2837 | "Created symtab %s for module %s.\n", | |
2838 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2839 | } |
2840 | ||
43f3e411 DE |
2841 | /* Add it to CUST's list of symtabs. */ |
2842 | if (cust->filetabs == NULL) | |
2843 | { | |
2844 | cust->filetabs = symtab; | |
2845 | cust->last_filetab = symtab; | |
2846 | } | |
2847 | else | |
2848 | { | |
2849 | cust->last_filetab->next = symtab; | |
2850 | cust->last_filetab = symtab; | |
2851 | } | |
2852 | ||
2853 | /* Backlink to the containing compunit symtab. */ | |
2854 | symtab->compunit_symtab = cust; | |
2855 | ||
2856 | return symtab; | |
2857 | } | |
2858 | ||
2859 | /* Allocate and initialize a new compunit. | |
2860 | NAME is the name of the main source file, if there is one, or some | |
2861 | descriptive text if there are no source files. */ | |
2862 | ||
2863 | struct compunit_symtab * | |
2864 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2865 | { | |
2866 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2867 | struct compunit_symtab); | |
2868 | const char *saved_name; | |
2869 | ||
2870 | cu->objfile = objfile; | |
2871 | ||
2872 | /* The name we record here is only for display/debugging purposes. | |
2873 | Just save the basename to avoid path issues (too long for display, | |
2874 | relative vs absolute, etc.). */ | |
2875 | saved_name = lbasename (name); | |
021887d8 | 2876 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 DE |
2877 | |
2878 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2879 | ||
2880 | if (symtab_create_debug) | |
2881 | { | |
22068491 TT |
2882 | fprintf_filtered (gdb_stdlog, |
2883 | "Created compunit symtab %s for %s.\n", | |
2884 | host_address_to_string (cu), | |
2885 | cu->name); | |
43f3e411 DE |
2886 | } |
2887 | ||
2888 | return cu; | |
2889 | } | |
2890 | ||
2891 | /* Hook CU to the objfile it comes from. */ | |
2892 | ||
2893 | void | |
2894 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2895 | { | |
2896 | cu->next = cu->objfile->compunit_symtabs; | |
2897 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2898 | } |
c906108c | 2899 | \f |
c5aa993b | 2900 | |
b15cc25c PA |
2901 | /* Reset all data structures in gdb which may contain references to |
2902 | symbol table data. */ | |
c906108c SS |
2903 | |
2904 | void | |
b15cc25c | 2905 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2906 | { |
2907 | /* Someday, we should do better than this, by only blowing away | |
2908 | the things that really need to be blown. */ | |
c0501be5 DJ |
2909 | |
2910 | /* Clear the "current" symtab first, because it is no longer valid. | |
2911 | breakpoint_re_set may try to access the current symtab. */ | |
2912 | clear_current_source_symtab_and_line (); | |
2913 | ||
c906108c | 2914 | clear_displays (); |
1bfeeb0f | 2915 | clear_last_displayed_sal (); |
c906108c | 2916 | clear_pc_function_cache (); |
76727919 | 2917 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2918 | |
8756216b DP |
2919 | /* Varobj may refer to old symbols, perform a cleanup. */ |
2920 | varobj_invalidate (); | |
2921 | ||
e700d1b2 JB |
2922 | /* Now that the various caches have been cleared, we can re_set |
2923 | our breakpoints without risking it using stale data. */ | |
2924 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2925 | breakpoint_re_set (); | |
c906108c | 2926 | } |
c906108c | 2927 | \f |
c906108c SS |
2928 | /* OVERLAYS: |
2929 | The following code implements an abstraction for debugging overlay sections. | |
2930 | ||
2931 | The target model is as follows: | |
2932 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2933 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2934 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2935 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2936 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2937 | sections should be considered to be mapped from the VMA to the LMA. |
2938 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2939 | For instance, if a section has been mapped then its contents |
c5aa993b | 2940 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2941 | |
2942 | Two levels of debugger support for overlays are available. One is | |
2943 | "manual", in which the debugger relies on the user to tell it which | |
2944 | overlays are currently mapped. This level of support is | |
2945 | implemented entirely in the core debugger, and the information about | |
2946 | whether a section is mapped is kept in the objfile->obj_section table. | |
2947 | ||
2948 | The second level of support is "automatic", and is only available if | |
2949 | the target-specific code provides functionality to read the target's | |
2950 | overlay mapping table, and translate its contents for the debugger | |
2951 | (by updating the mapped state information in the obj_section tables). | |
2952 | ||
2953 | The interface is as follows: | |
c5aa993b JM |
2954 | User commands: |
2955 | overlay map <name> -- tell gdb to consider this section mapped | |
2956 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2957 | overlay list -- list the sections that GDB thinks are mapped | |
2958 | overlay read-target -- get the target's state of what's mapped | |
2959 | overlay off/manual/auto -- set overlay debugging state | |
2960 | Functional interface: | |
2961 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2962 | section, return that section. | |
5417f6dc | 2963 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2964 | the pc, either in its VMA or its LMA |
714835d5 | 2965 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2966 | section_is_overlay(sect): true if section's VMA != LMA |
2967 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2968 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2969 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2970 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2971 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2972 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2973 | either in VMA or LMA depending on whether | |
c378eb4e | 2974 | the symbol's section is currently mapped. */ |
c906108c SS |
2975 | |
2976 | /* Overlay debugging state: */ | |
2977 | ||
d874f1e2 | 2978 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2979 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2980 | |
c906108c | 2981 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2982 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2983 | SECTION is loaded at an address different from where it will "run". */ |
2984 | ||
2985 | int | |
714835d5 | 2986 | section_is_overlay (struct obj_section *section) |
c906108c | 2987 | { |
714835d5 UW |
2988 | if (overlay_debugging && section) |
2989 | { | |
714835d5 | 2990 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2991 | |
fd361982 AM |
2992 | if (bfd_section_lma (bfd_section) != 0 |
2993 | && bfd_section_lma (bfd_section) != bfd_section_vma (bfd_section)) | |
714835d5 UW |
2994 | return 1; |
2995 | } | |
c906108c SS |
2996 | |
2997 | return 0; | |
2998 | } | |
2999 | ||
3000 | /* Function: overlay_invalidate_all (void) | |
3001 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3002 | ||
3003 | static void | |
fba45db2 | 3004 | overlay_invalidate_all (void) |
c906108c | 3005 | { |
c906108c SS |
3006 | struct obj_section *sect; |
3007 | ||
2030c079 | 3008 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3009 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
3010 | if (section_is_overlay (sect)) | |
3011 | sect->ovly_mapped = -1; | |
c906108c SS |
3012 | } |
3013 | ||
714835d5 | 3014 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3015 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3016 | |
3017 | Access to the ovly_mapped flag is restricted to this function, so | |
3018 | that we can do automatic update. If the global flag | |
3019 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3020 | overlay_invalidate_all. If the mapped state of the particular | |
3021 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3022 | ||
714835d5 UW |
3023 | int |
3024 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3025 | { |
9216df95 UW |
3026 | struct gdbarch *gdbarch; |
3027 | ||
714835d5 | 3028 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3029 | return 0; |
3030 | ||
c5aa993b | 3031 | switch (overlay_debugging) |
c906108c SS |
3032 | { |
3033 | default: | |
d874f1e2 | 3034 | case ovly_off: |
c5aa993b | 3035 | return 0; /* overlay debugging off */ |
d874f1e2 | 3036 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3037 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3038 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3039 | gdbarch = get_objfile_arch (osect->objfile); |
3040 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3041 | { |
3042 | if (overlay_cache_invalid) | |
3043 | { | |
3044 | overlay_invalidate_all (); | |
3045 | overlay_cache_invalid = 0; | |
3046 | } | |
3047 | if (osect->ovly_mapped == -1) | |
9216df95 | 3048 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3049 | } |
86a73007 | 3050 | /* fall thru */ |
d874f1e2 | 3051 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3052 | return osect->ovly_mapped == 1; |
3053 | } | |
3054 | } | |
3055 | ||
c906108c SS |
3056 | /* Function: pc_in_unmapped_range |
3057 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3058 | ||
3059 | CORE_ADDR | |
714835d5 | 3060 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3061 | { |
714835d5 UW |
3062 | if (section_is_overlay (section)) |
3063 | { | |
714835d5 | 3064 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3065 | |
714835d5 | 3066 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
fd361982 | 3067 | bfd_vma size = bfd_section_size (bfd_section); |
714835d5 UW |
3068 | CORE_ADDR offset = obj_section_offset (section); |
3069 | ||
fd361982 AM |
3070 | if (bfd_section_lma (bfd_section) + offset <= pc |
3071 | && pc < bfd_section_lma (bfd_section) + offset + size) | |
714835d5 UW |
3072 | return 1; |
3073 | } | |
c906108c | 3074 | |
c906108c SS |
3075 | return 0; |
3076 | } | |
3077 | ||
3078 | /* Function: pc_in_mapped_range | |
3079 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3080 | ||
3081 | CORE_ADDR | |
714835d5 | 3082 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3083 | { |
714835d5 UW |
3084 | if (section_is_overlay (section)) |
3085 | { | |
3086 | if (obj_section_addr (section) <= pc | |
3087 | && pc < obj_section_endaddr (section)) | |
3088 | return 1; | |
3089 | } | |
c906108c | 3090 | |
c906108c SS |
3091 | return 0; |
3092 | } | |
3093 | ||
9ec8e6a0 JB |
3094 | /* Return true if the mapped ranges of sections A and B overlap, false |
3095 | otherwise. */ | |
3b7bacac | 3096 | |
b9362cc7 | 3097 | static int |
714835d5 | 3098 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3099 | { |
714835d5 UW |
3100 | CORE_ADDR a_start = obj_section_addr (a); |
3101 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3102 | CORE_ADDR b_start = obj_section_addr (b); | |
3103 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3104 | |
3105 | return (a_start < b_end && b_start < a_end); | |
3106 | } | |
3107 | ||
c906108c SS |
3108 | /* Function: overlay_unmapped_address (PC, SECTION) |
3109 | Returns the address corresponding to PC in the unmapped (load) range. | |
3110 | May be the same as PC. */ | |
3111 | ||
3112 | CORE_ADDR | |
714835d5 | 3113 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3114 | { |
714835d5 UW |
3115 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3116 | { | |
714835d5 | 3117 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3118 | |
fd361982 AM |
3119 | return (pc + bfd_section_lma (bfd_section) |
3120 | - bfd_section_vma (bfd_section)); | |
714835d5 | 3121 | } |
c906108c SS |
3122 | |
3123 | return pc; | |
3124 | } | |
3125 | ||
3126 | /* Function: overlay_mapped_address (PC, SECTION) | |
3127 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3128 | May be the same as PC. */ | |
3129 | ||
3130 | CORE_ADDR | |
714835d5 | 3131 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3132 | { |
714835d5 UW |
3133 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3134 | { | |
714835d5 | 3135 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3136 | |
fd361982 AM |
3137 | return (pc + bfd_section_vma (bfd_section) |
3138 | - bfd_section_lma (bfd_section)); | |
714835d5 | 3139 | } |
c906108c SS |
3140 | |
3141 | return pc; | |
3142 | } | |
3143 | ||
5417f6dc | 3144 | /* Function: symbol_overlayed_address |
c906108c SS |
3145 | Return one of two addresses (relative to the VMA or to the LMA), |
3146 | depending on whether the section is mapped or not. */ | |
3147 | ||
c5aa993b | 3148 | CORE_ADDR |
714835d5 | 3149 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3150 | { |
3151 | if (overlay_debugging) | |
3152 | { | |
c378eb4e | 3153 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3154 | if (section == 0) |
3155 | return address; | |
c378eb4e MS |
3156 | /* If the symbol's section is not an overlay, just return its |
3157 | address. */ | |
c906108c SS |
3158 | if (!section_is_overlay (section)) |
3159 | return address; | |
c378eb4e | 3160 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3161 | if (section_is_mapped (section)) |
3162 | return address; | |
3163 | /* | |
3164 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3165 | * then return its LOADED address rather than its vma address!! | |
3166 | */ | |
3167 | return overlay_unmapped_address (address, section); | |
3168 | } | |
3169 | return address; | |
3170 | } | |
3171 | ||
5417f6dc | 3172 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3173 | Return the best-match overlay section for PC: |
3174 | If PC matches a mapped overlay section's VMA, return that section. | |
3175 | Else if PC matches an unmapped section's VMA, return that section. | |
3176 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3177 | ||
714835d5 | 3178 | struct obj_section * |
fba45db2 | 3179 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3180 | { |
c906108c SS |
3181 | struct obj_section *osect, *best_match = NULL; |
3182 | ||
3183 | if (overlay_debugging) | |
b631e59b | 3184 | { |
2030c079 | 3185 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3186 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3187 | if (section_is_overlay (osect)) | |
3188 | { | |
3189 | if (pc_in_mapped_range (pc, osect)) | |
3190 | { | |
3191 | if (section_is_mapped (osect)) | |
3192 | return osect; | |
3193 | else | |
3194 | best_match = osect; | |
3195 | } | |
3196 | else if (pc_in_unmapped_range (pc, osect)) | |
3197 | best_match = osect; | |
3198 | } | |
b631e59b | 3199 | } |
714835d5 | 3200 | return best_match; |
c906108c SS |
3201 | } |
3202 | ||
3203 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3204 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3205 | currently marked as MAPPED, return that section. Else return NULL. */ |
3206 | ||
714835d5 | 3207 | struct obj_section * |
fba45db2 | 3208 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3209 | { |
c906108c SS |
3210 | struct obj_section *osect; |
3211 | ||
3212 | if (overlay_debugging) | |
b631e59b | 3213 | { |
2030c079 | 3214 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3215 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3216 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3217 | return osect; | |
b631e59b | 3218 | } |
c906108c SS |
3219 | |
3220 | return NULL; | |
3221 | } | |
3222 | ||
3223 | /* Function: list_overlays_command | |
c378eb4e | 3224 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3225 | |
5d3055ad | 3226 | static void |
2cf311eb | 3227 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3228 | { |
c5aa993b | 3229 | int nmapped = 0; |
c906108c SS |
3230 | struct obj_section *osect; |
3231 | ||
3232 | if (overlay_debugging) | |
b631e59b | 3233 | { |
2030c079 | 3234 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3235 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3236 | if (section_is_mapped (osect)) | |
3237 | { | |
3238 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3239 | const char *name; | |
3240 | bfd_vma lma, vma; | |
3241 | int size; | |
3242 | ||
fd361982 AM |
3243 | vma = bfd_section_vma (osect->the_bfd_section); |
3244 | lma = bfd_section_lma (osect->the_bfd_section); | |
3245 | size = bfd_section_size (osect->the_bfd_section); | |
3246 | name = bfd_section_name (osect->the_bfd_section); | |
3b9d3ac2 TT |
3247 | |
3248 | printf_filtered ("Section %s, loaded at ", name); | |
3249 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3250 | puts_filtered (" - "); | |
3251 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3252 | printf_filtered (", mapped at "); | |
3253 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3254 | puts_filtered (" - "); | |
3255 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3256 | puts_filtered ("\n"); | |
3257 | ||
3258 | nmapped++; | |
3259 | } | |
b631e59b | 3260 | } |
c906108c | 3261 | if (nmapped == 0) |
a3f17187 | 3262 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3263 | } |
3264 | ||
3265 | /* Function: map_overlay_command | |
3266 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3267 | ||
5d3055ad | 3268 | static void |
2cf311eb | 3269 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3270 | { |
c5aa993b | 3271 | struct obj_section *sec, *sec2; |
c906108c SS |
3272 | |
3273 | if (!overlay_debugging) | |
3e43a32a MS |
3274 | error (_("Overlay debugging not enabled. Use " |
3275 | "either the 'overlay auto' or\n" | |
3276 | "the 'overlay manual' command.")); | |
c906108c SS |
3277 | |
3278 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3279 | error (_("Argument required: name of an overlay section")); |
c906108c | 3280 | |
c378eb4e | 3281 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3282 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 | 3283 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
fd361982 | 3284 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
c5aa993b | 3285 | { |
3b9d3ac2 TT |
3286 | /* Now, check to see if the section is an overlay. */ |
3287 | if (!section_is_overlay (sec)) | |
3288 | continue; /* not an overlay section */ | |
3289 | ||
3290 | /* Mark the overlay as "mapped". */ | |
3291 | sec->ovly_mapped = 1; | |
3292 | ||
3293 | /* Next, make a pass and unmap any sections that are | |
3294 | overlapped by this new section: */ | |
2030c079 | 3295 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3296 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3297 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3298 | sec2)) | |
3299 | { | |
3300 | if (info_verbose) | |
3301 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
fd361982 | 3302 | bfd_section_name (sec2->the_bfd_section)); |
3b9d3ac2 TT |
3303 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
3304 | } | |
3305 | return; | |
c5aa993b | 3306 | } |
8a3fe4f8 | 3307 | error (_("No overlay section called %s"), args); |
c906108c SS |
3308 | } |
3309 | ||
3310 | /* Function: unmap_overlay_command | |
5417f6dc | 3311 | Mark the overlay section as unmapped |
c906108c SS |
3312 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3313 | ||
5d3055ad | 3314 | static void |
2cf311eb | 3315 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3316 | { |
7a270e0c | 3317 | struct obj_section *sec = NULL; |
c906108c SS |
3318 | |
3319 | if (!overlay_debugging) | |
3e43a32a MS |
3320 | error (_("Overlay debugging not enabled. " |
3321 | "Use either the 'overlay auto' or\n" | |
3322 | "the 'overlay manual' command.")); | |
c906108c SS |
3323 | |
3324 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3325 | error (_("Argument required: name of an overlay section")); |
c906108c | 3326 | |
c378eb4e | 3327 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3328 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 3329 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
fd361982 | 3330 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
3b9d3ac2 TT |
3331 | { |
3332 | if (!sec->ovly_mapped) | |
3333 | error (_("Section %s is not mapped"), args); | |
3334 | sec->ovly_mapped = 0; | |
3335 | return; | |
3336 | } | |
8a3fe4f8 | 3337 | error (_("No overlay section called %s"), args); |
c906108c SS |
3338 | } |
3339 | ||
3340 | /* Function: overlay_auto_command | |
3341 | A utility command to turn on overlay debugging. | |
c378eb4e | 3342 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3343 | |
3344 | static void | |
2cf311eb | 3345 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3346 | { |
d874f1e2 | 3347 | overlay_debugging = ovly_auto; |
1900040c | 3348 | enable_overlay_breakpoints (); |
c906108c | 3349 | if (info_verbose) |
a3f17187 | 3350 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3351 | } |
3352 | ||
3353 | /* Function: overlay_manual_command | |
3354 | A utility command to turn on overlay debugging. | |
c378eb4e | 3355 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3356 | |
3357 | static void | |
2cf311eb | 3358 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3359 | { |
d874f1e2 | 3360 | overlay_debugging = ovly_on; |
1900040c | 3361 | disable_overlay_breakpoints (); |
c906108c | 3362 | if (info_verbose) |
a3f17187 | 3363 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3364 | } |
3365 | ||
3366 | /* Function: overlay_off_command | |
3367 | A utility command to turn on overlay debugging. | |
c378eb4e | 3368 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3369 | |
3370 | static void | |
2cf311eb | 3371 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3372 | { |
d874f1e2 | 3373 | overlay_debugging = ovly_off; |
1900040c | 3374 | disable_overlay_breakpoints (); |
c906108c | 3375 | if (info_verbose) |
a3f17187 | 3376 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3377 | } |
3378 | ||
3379 | static void | |
2cf311eb | 3380 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3381 | { |
e17c207e UW |
3382 | struct gdbarch *gdbarch = get_current_arch (); |
3383 | ||
3384 | if (gdbarch_overlay_update_p (gdbarch)) | |
3385 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3386 | else |
8a3fe4f8 | 3387 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3388 | } |
3389 | ||
3390 | /* Function: overlay_command | |
c378eb4e | 3391 | A place-holder for a mis-typed command. */ |
c906108c | 3392 | |
c378eb4e | 3393 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3394 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3395 | |
3396 | static void | |
981a3fb3 | 3397 | overlay_command (const char *args, int from_tty) |
c906108c | 3398 | { |
c5aa993b | 3399 | printf_unfiltered |
c906108c | 3400 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3401 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3402 | } |
3403 | ||
c906108c SS |
3404 | /* Target Overlays for the "Simplest" overlay manager: |
3405 | ||
5417f6dc RM |
3406 | This is GDB's default target overlay layer. It works with the |
3407 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3408 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3409 | so targets that use a different runtime overlay manager can |
c906108c SS |
3410 | substitute their own overlay_update function and take over the |
3411 | function pointer. | |
3412 | ||
3413 | The overlay_update function pokes around in the target's data structures | |
3414 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3415 | this information. | |
3416 | ||
3417 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3418 | unsigned _novlys; /# number of overlay sections #/ |
3419 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3420 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3421 | {..., ..., ..., ...}, |
3422 | } | |
3423 | unsigned _novly_regions; /# number of overlay regions #/ | |
3424 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3425 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3426 | {..., ..., ...}, |
3427 | } | |
c906108c SS |
3428 | These functions will attempt to update GDB's mappedness state in the |
3429 | symbol section table, based on the target's mappedness state. | |
3430 | ||
3431 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3432 | attempt to detect when the cached copy is invalidated. The main | |
3433 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3434 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3435 | the target (whenever possible). */ |
c906108c SS |
3436 | |
3437 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3438 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3439 | static unsigned cache_novlys = 0; |
c906108c | 3440 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3441 | enum ovly_index |
3442 | { | |
438e1e42 | 3443 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3444 | }; |
c906108c | 3445 | |
c378eb4e | 3446 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3447 | |
c906108c | 3448 | static void |
fba45db2 | 3449 | simple_free_overlay_table (void) |
c906108c SS |
3450 | { |
3451 | if (cache_ovly_table) | |
b8c9b27d | 3452 | xfree (cache_ovly_table); |
c5aa993b | 3453 | cache_novlys = 0; |
c906108c SS |
3454 | cache_ovly_table = NULL; |
3455 | cache_ovly_table_base = 0; | |
3456 | } | |
3457 | ||
9216df95 | 3458 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3459 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3460 | |
c906108c | 3461 | static void |
9216df95 | 3462 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3463 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3464 | { |
c378eb4e | 3465 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3466 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3467 | int i; |
c906108c | 3468 | |
9216df95 | 3469 | read_memory (memaddr, buf, len * size); |
c906108c | 3470 | for (i = 0; i < len; i++) |
e17a4113 | 3471 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3472 | } |
3473 | ||
3474 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3475 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3476 | |
c5aa993b | 3477 | static int |
fba45db2 | 3478 | simple_read_overlay_table (void) |
c906108c | 3479 | { |
3b7344d5 | 3480 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3481 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3482 | struct gdbarch *gdbarch; |
3483 | int word_size; | |
e17a4113 | 3484 | enum bfd_endian byte_order; |
c906108c SS |
3485 | |
3486 | simple_free_overlay_table (); | |
9b27852e | 3487 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3488 | if (! novlys_msym.minsym) |
c906108c | 3489 | { |
8a3fe4f8 | 3490 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3491 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3492 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3493 | return 0; |
c906108c | 3494 | } |
0d43edd1 | 3495 | |
7c7b6655 TT |
3496 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3497 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3498 | { |
8a3fe4f8 | 3499 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3500 | "`_ovly_table' array\n" |
8a3fe4f8 | 3501 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3502 | return 0; |
3503 | } | |
3504 | ||
7c7b6655 | 3505 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3506 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3507 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3508 | |
77e371c0 TT |
3509 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3510 | 4, byte_order); | |
0d43edd1 | 3511 | cache_ovly_table |
224c3ddb | 3512 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3513 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3514 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3515 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3516 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3517 | |
c5aa993b | 3518 | return 1; /* SUCCESS */ |
c906108c SS |
3519 | } |
3520 | ||
5417f6dc | 3521 | /* Function: simple_overlay_update_1 |
c906108c SS |
3522 | A helper function for simple_overlay_update. Assuming a cached copy |
3523 | of _ovly_table exists, look through it to find an entry whose vma, | |
3524 | lma and size match those of OSECT. Re-read the entry and make sure | |
3525 | it still matches OSECT (else the table may no longer be valid). | |
3526 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3527 | success, 0 for failure. */ | |
3528 | ||
3529 | static int | |
fba45db2 | 3530 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3531 | { |
764c99c1 | 3532 | int i; |
fbd35540 | 3533 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3534 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3535 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3536 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3537 | |
c906108c | 3538 | for (i = 0; i < cache_novlys; i++) |
fd361982 AM |
3539 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3540 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c | 3541 | { |
9216df95 UW |
3542 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3543 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3544 | 4, word_size, byte_order); |
fd361982 AM |
3545 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3546 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c SS |
3547 | { |
3548 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3549 | return 1; | |
3550 | } | |
c378eb4e | 3551 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3552 | return 0; |
3553 | } | |
3554 | return 0; | |
3555 | } | |
3556 | ||
3557 | /* Function: simple_overlay_update | |
5417f6dc RM |
3558 | If OSECT is NULL, then update all sections' mapped state |
3559 | (after re-reading the entire target _ovly_table). | |
3560 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3561 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3562 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3563 | re-read the entire cache, and go ahead and update all sections. */ |
3564 | ||
1c772458 | 3565 | void |
fba45db2 | 3566 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3567 | { |
c378eb4e | 3568 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3569 | if (osect) |
c378eb4e | 3570 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3571 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3572 | { |
3573 | /* Does its cached location match what's currently in the | |
3574 | symtab? */ | |
3b7344d5 | 3575 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3576 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3577 | ||
3b7344d5 | 3578 | if (minsym.minsym == NULL) |
9cc89665 MS |
3579 | error (_("Error reading inferior's overlay table: couldn't " |
3580 | "find `_ovly_table' array\n" | |
3581 | "in inferior. Use `overlay manual' mode.")); | |
3582 | ||
77e371c0 | 3583 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3584 | /* Then go ahead and try to look up this single section in |
3585 | the cache. */ | |
3586 | if (simple_overlay_update_1 (osect)) | |
3587 | /* Found it! We're done. */ | |
3588 | return; | |
3589 | } | |
c906108c SS |
3590 | |
3591 | /* Cached table no good: need to read the entire table anew. | |
3592 | Or else we want all the sections, in which case it's actually | |
3593 | more efficient to read the whole table in one block anyway. */ | |
3594 | ||
0d43edd1 JB |
3595 | if (! simple_read_overlay_table ()) |
3596 | return; | |
3597 | ||
c378eb4e | 3598 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3599 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3600 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3601 | if (section_is_overlay (osect)) | |
3602 | { | |
3603 | int i; | |
3604 | asection *bsect = osect->the_bfd_section; | |
3605 | ||
3606 | for (i = 0; i < cache_novlys; i++) | |
fd361982 AM |
3607 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3608 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
3b9d3ac2 TT |
3609 | { /* obj_section matches i'th entry in ovly_table. */ |
3610 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3611 | break; /* finished with inner for loop: break out. */ | |
3612 | } | |
3613 | } | |
c906108c SS |
3614 | } |
3615 | ||
086df311 DJ |
3616 | /* Set the output sections and output offsets for section SECTP in |
3617 | ABFD. The relocation code in BFD will read these offsets, so we | |
3618 | need to be sure they're initialized. We map each section to itself, | |
3619 | with no offset; this means that SECTP->vma will be honored. */ | |
3620 | ||
3621 | static void | |
3622 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3623 | { | |
3624 | sectp->output_section = sectp; | |
3625 | sectp->output_offset = 0; | |
3626 | } | |
3627 | ||
ac8035ab TG |
3628 | /* Default implementation for sym_relocate. */ |
3629 | ||
ac8035ab TG |
3630 | bfd_byte * |
3631 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3632 | bfd_byte *buf) | |
3633 | { | |
3019eac3 DE |
3634 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3635 | DWO file. */ | |
3636 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3637 | |
3638 | /* We're only interested in sections with relocation | |
3639 | information. */ | |
3640 | if ((sectp->flags & SEC_RELOC) == 0) | |
3641 | return NULL; | |
3642 | ||
3643 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3644 | all sections begin at 0. */ | |
3645 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3646 | ||
3647 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3648 | } | |
3649 | ||
086df311 DJ |
3650 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3651 | contents are stored in BUF if it is non-NULL, or returned in a | |
3652 | malloc'd buffer otherwise. | |
3653 | ||
3654 | For some platforms and debug info formats, shared libraries contain | |
3655 | relocations against the debug sections (particularly for DWARF-2; | |
3656 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3657 | the version of the linker in use). Also, ELF object files naturally | |
3658 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3659 | the relocations in order to get the locations of symbols correct. |
3660 | Another example that may require relocation processing, is the | |
3661 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3662 | debug section. */ | |
086df311 DJ |
3663 | |
3664 | bfd_byte * | |
ac8035ab TG |
3665 | symfile_relocate_debug_section (struct objfile *objfile, |
3666 | asection *sectp, bfd_byte *buf) | |
086df311 | 3667 | { |
ac8035ab | 3668 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3669 | |
ac8035ab | 3670 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3671 | } |
c906108c | 3672 | |
31d99776 DJ |
3673 | struct symfile_segment_data * |
3674 | get_symfile_segment_data (bfd *abfd) | |
3675 | { | |
00b5771c | 3676 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3677 | |
3678 | if (sf == NULL) | |
3679 | return NULL; | |
3680 | ||
3681 | return sf->sym_segments (abfd); | |
3682 | } | |
3683 | ||
3684 | void | |
3685 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3686 | { | |
3687 | xfree (data->segment_bases); | |
3688 | xfree (data->segment_sizes); | |
3689 | xfree (data->segment_info); | |
3690 | xfree (data); | |
3691 | } | |
3692 | ||
28c32713 JB |
3693 | /* Given: |
3694 | - DATA, containing segment addresses from the object file ABFD, and | |
3695 | the mapping from ABFD's sections onto the segments that own them, | |
3696 | and | |
3697 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3698 | segment addresses reported by the target, | |
3699 | store the appropriate offsets for each section in OFFSETS. | |
3700 | ||
3701 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3702 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3703 | ||
8d385431 DJ |
3704 | If there are more entries, then ignore the extra. The target may |
3705 | not be able to distinguish between an empty data segment and a | |
3706 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3707 | |
31d99776 | 3708 | int |
3189cb12 DE |
3709 | symfile_map_offsets_to_segments (bfd *abfd, |
3710 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3711 | struct section_offsets *offsets, |
3712 | int num_segment_bases, | |
3713 | const CORE_ADDR *segment_bases) | |
3714 | { | |
3715 | int i; | |
3716 | asection *sect; | |
3717 | ||
28c32713 JB |
3718 | /* It doesn't make sense to call this function unless you have some |
3719 | segment base addresses. */ | |
202b96c1 | 3720 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3721 | |
31d99776 DJ |
3722 | /* If we do not have segment mappings for the object file, we |
3723 | can not relocate it by segments. */ | |
3724 | gdb_assert (data != NULL); | |
3725 | gdb_assert (data->num_segments > 0); | |
3726 | ||
31d99776 DJ |
3727 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3728 | { | |
31d99776 DJ |
3729 | int which = data->segment_info[i]; |
3730 | ||
28c32713 JB |
3731 | gdb_assert (0 <= which && which <= data->num_segments); |
3732 | ||
3733 | /* Don't bother computing offsets for sections that aren't | |
3734 | loaded as part of any segment. */ | |
3735 | if (! which) | |
3736 | continue; | |
3737 | ||
3738 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3739 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3740 | if (which > num_segment_bases) |
28c32713 | 3741 | which = num_segment_bases; |
31d99776 | 3742 | |
28c32713 JB |
3743 | offsets->offsets[i] = (segment_bases[which - 1] |
3744 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3745 | } |
3746 | ||
3747 | return 1; | |
3748 | } | |
3749 | ||
3750 | static void | |
3751 | symfile_find_segment_sections (struct objfile *objfile) | |
3752 | { | |
3753 | bfd *abfd = objfile->obfd; | |
3754 | int i; | |
3755 | asection *sect; | |
3756 | struct symfile_segment_data *data; | |
3757 | ||
3758 | data = get_symfile_segment_data (objfile->obfd); | |
3759 | if (data == NULL) | |
3760 | return; | |
3761 | ||
3762 | if (data->num_segments != 1 && data->num_segments != 2) | |
3763 | { | |
3764 | free_symfile_segment_data (data); | |
3765 | return; | |
3766 | } | |
3767 | ||
3768 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3769 | { | |
31d99776 DJ |
3770 | int which = data->segment_info[i]; |
3771 | ||
3772 | if (which == 1) | |
3773 | { | |
3774 | if (objfile->sect_index_text == -1) | |
3775 | objfile->sect_index_text = sect->index; | |
3776 | ||
3777 | if (objfile->sect_index_rodata == -1) | |
3778 | objfile->sect_index_rodata = sect->index; | |
3779 | } | |
3780 | else if (which == 2) | |
3781 | { | |
3782 | if (objfile->sect_index_data == -1) | |
3783 | objfile->sect_index_data = sect->index; | |
3784 | ||
3785 | if (objfile->sect_index_bss == -1) | |
3786 | objfile->sect_index_bss = sect->index; | |
3787 | } | |
3788 | } | |
3789 | ||
3790 | free_symfile_segment_data (data); | |
3791 | } | |
3792 | ||
76ad5e1e NB |
3793 | /* Listen for free_objfile events. */ |
3794 | ||
3795 | static void | |
3796 | symfile_free_objfile (struct objfile *objfile) | |
3797 | { | |
c33b2f12 MM |
3798 | /* Remove the target sections owned by this objfile. */ |
3799 | if (objfile != NULL) | |
76ad5e1e NB |
3800 | remove_target_sections ((void *) objfile); |
3801 | } | |
3802 | ||
540c2971 DE |
3803 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3804 | Expand all symtabs that match the specified criteria. | |
3805 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3806 | ||
3807 | void | |
14bc53a8 PA |
3808 | expand_symtabs_matching |
3809 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3810 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3811 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3812 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3813 | enum search_domain kind) | |
540c2971 | 3814 | { |
2030c079 | 3815 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3816 | { |
3817 | if (objfile->sf) | |
3818 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
3819 | lookup_name, | |
3820 | symbol_matcher, | |
3821 | expansion_notify, kind); | |
3822 | } | |
540c2971 DE |
3823 | } |
3824 | ||
3825 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3826 | Map function FUN over every file. | |
3827 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3828 | ||
3829 | void | |
bb4142cf DE |
3830 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3831 | int need_fullname) | |
540c2971 | 3832 | { |
2030c079 | 3833 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3834 | { |
3835 | if (objfile->sf) | |
3836 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3837 | need_fullname); | |
3838 | } | |
540c2971 DE |
3839 | } |
3840 | ||
32fa66eb SM |
3841 | #if GDB_SELF_TEST |
3842 | ||
3843 | namespace selftests { | |
3844 | namespace filename_language { | |
3845 | ||
32fa66eb SM |
3846 | static void test_filename_language () |
3847 | { | |
3848 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3849 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3850 | |
3851 | /* Test deducing an unknown extension. */ | |
3852 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3853 | SELF_CHECK (lang == language_unknown); | |
3854 | ||
3855 | /* Test deducing a known extension. */ | |
3856 | lang = deduce_language_from_filename ("myfile.c"); | |
3857 | SELF_CHECK (lang == language_c); | |
3858 | ||
3859 | /* Test adding a new extension using the internal API. */ | |
3860 | add_filename_language (".blah", language_pascal); | |
3861 | lang = deduce_language_from_filename ("myfile.blah"); | |
3862 | SELF_CHECK (lang == language_pascal); | |
3863 | } | |
3864 | ||
3865 | static void | |
3866 | test_set_ext_lang_command () | |
3867 | { | |
3868 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3869 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3870 | |
3871 | /* Confirm that the .hello extension is not known. */ | |
3872 | language lang = deduce_language_from_filename ("cake.hello"); | |
3873 | SELF_CHECK (lang == language_unknown); | |
3874 | ||
3875 | /* Test adding a new extension using the CLI command. */ | |
b02f78f9 | 3876 | auto args_holder = make_unique_xstrdup (".hello rust"); |
32fa66eb SM |
3877 | ext_args = args_holder.get (); |
3878 | set_ext_lang_command (NULL, 1, NULL); | |
3879 | ||
3880 | lang = deduce_language_from_filename ("cake.hello"); | |
3881 | SELF_CHECK (lang == language_rust); | |
3882 | ||
3883 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3884 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3885 | args_holder.reset (xstrdup (".hello pascal")); |
3886 | ext_args = args_holder.get (); | |
3887 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3888 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3889 | |
3890 | lang = deduce_language_from_filename ("cake.hello"); | |
3891 | SELF_CHECK (lang == language_pascal); | |
3892 | SELF_CHECK (size_before == size_after); | |
3893 | } | |
3894 | ||
3895 | } /* namespace filename_language */ | |
3896 | } /* namespace selftests */ | |
3897 | ||
3898 | #endif /* GDB_SELF_TEST */ | |
3899 | ||
c906108c | 3900 | void |
fba45db2 | 3901 | _initialize_symfile (void) |
c906108c SS |
3902 | { |
3903 | struct cmd_list_element *c; | |
c5aa993b | 3904 | |
76727919 | 3905 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3906 | |
97cbe998 | 3907 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3908 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3909 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3910 | faster.\n\ |
3911 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3912 | symbolic debug information." | |
8ca2f0b9 | 3913 | |
1a966eab AC |
3914 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3915 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3916 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3917 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3918 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3919 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3920 | set_cmd_completer (c, filename_completer); |
c906108c | 3921 | |
1a966eab | 3922 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3923 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3924 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3925 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3926 | ADDR is the starting address of the file's text.\n\ |
3927 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3928 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3929 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3930 | OFF is an optional offset which is added to the default load addresses\n\ | |
3931 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3932 | READNOW_READNEVER_HELP), |
c906108c | 3933 | &cmdlist); |
5ba2abeb | 3934 | set_cmd_completer (c, filename_completer); |
c906108c | 3935 | |
63644780 NB |
3936 | c = add_cmd ("remove-symbol-file", class_files, |
3937 | remove_symbol_file_command, _("\ | |
3938 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3939 | Usage: remove-symbol-file FILENAME\n\ | |
3940 | remove-symbol-file -a ADDRESS\n\ | |
3941 | The file to remove can be identified by its filename or by an address\n\ | |
3942 | that lies within the boundaries of this symbol file in memory."), | |
3943 | &cmdlist); | |
3944 | ||
1a966eab | 3945 | c = add_cmd ("load", class_files, load_command, _("\ |
590042fc PW |
3946 | Dynamically load FILE into the running program.\n\ |
3947 | FILE symbols are recorded for access from GDB.\n\ | |
8ca2f0b9 | 3948 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3949 | An optional load OFFSET may also be given as a literal address.\n\ |
3950 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3951 | on its own."), &cmdlist); |
5ba2abeb | 3952 | set_cmd_completer (c, filename_completer); |
c906108c | 3953 | |
c5aa993b | 3954 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3955 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3956 | "overlay ", 0, &cmdlist); |
3957 | ||
3958 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3959 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3960 | ||
c5aa993b | 3961 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3962 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3963 | |
c5aa993b | 3964 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3965 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3966 | |
c5aa993b | 3967 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3968 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3969 | |
c5aa993b | 3970 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3971 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3972 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3973 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3974 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3975 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3976 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3977 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3978 | |
3979 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3980 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3981 | &ext_args, _("\ | |
3982 | Set mapping between filename extension and source language."), _("\ | |
3983 | Show mapping between filename extension and source language."), _("\ | |
3984 | Usage: set extension-language .foo bar"), | |
3985 | set_ext_lang_command, | |
920d2a44 | 3986 | show_ext_args, |
26c41df3 | 3987 | &setlist, &showlist); |
c906108c | 3988 | |
c5aa993b | 3989 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3990 | _("All filename extensions associated with a source language.")); |
917317f4 | 3991 | |
525226b5 AC |
3992 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3993 | &debug_file_directory, _("\ | |
24ddea62 JK |
3994 | Set the directories where separate debug symbols are searched for."), _("\ |
3995 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3996 | Separate debug symbols are first searched for in the same\n\ |
3997 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3998 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3999 | each global debug-file-directory component prepended."), |
525226b5 | 4000 | NULL, |
920d2a44 | 4001 | show_debug_file_directory, |
525226b5 | 4002 | &setlist, &showlist); |
770e7fc7 DE |
4003 | |
4004 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
4005 | print_symbol_loading_enums, &print_symbol_loading, | |
4006 | _("\ | |
4007 | Set printing of symbol loading messages."), _("\ | |
4008 | Show printing of symbol loading messages."), _("\ | |
4009 | off == turn all messages off\n\ | |
4010 | brief == print messages for the executable,\n\ | |
4011 | and brief messages for shared libraries\n\ | |
4012 | full == print messages for the executable,\n\ | |
4013 | and messages for each shared library."), | |
4014 | NULL, | |
4015 | NULL, | |
4016 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
4017 | |
4018 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
4019 | &separate_debug_file_debug, _("\ | |
4020 | Set printing of separate debug info file search debug."), _("\ | |
4021 | Show printing of separate debug info file search debug."), _("\ | |
4022 | When on, GDB prints the searched locations while looking for separate debug \ | |
4023 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4024 | |
4025 | #if GDB_SELF_TEST | |
4026 | selftests::register_test | |
4027 | ("filename_language", selftests::filename_language::test_filename_language); | |
4028 | selftests::register_test | |
4029 | ("set_ext_lang_command", | |
4030 | selftests::filename_language::test_set_ext_lang_command); | |
4031 | #endif | |
c906108c | 4032 | } |