Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
3666a048 | 3 | Copyright (C) 1990-2021 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
e0eac551 | 47 | #include "readline/tilde.h" |
fe898f56 | 48 | #include "block.h" |
76727919 | 49 | #include "observable.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
268a13a5 TT |
59 | #include "gdbsupport/byte-vector.h" |
60 | #include "gdbsupport/pathstuff.h" | |
61 | #include "gdbsupport/selftest.h" | |
47fd17cd | 62 | #include "cli/cli-style.h" |
268a13a5 | 63 | #include "gdbsupport/forward-scope-exit.h" |
c906108c | 64 | |
c906108c SS |
65 | #include <sys/types.h> |
66 | #include <fcntl.h> | |
53ce3c39 | 67 | #include <sys/stat.h> |
c906108c | 68 | #include <ctype.h> |
dcb07cfa | 69 | #include <chrono> |
37e136b1 | 70 | #include <algorithm> |
c906108c | 71 | |
ccefe4c4 | 72 | #include "psymtab.h" |
c906108c | 73 | |
3e43a32a MS |
74 | int (*deprecated_ui_load_progress_hook) (const char *section, |
75 | unsigned long num); | |
9a4105ab | 76 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
77 | unsigned long section_sent, |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
c2d11a7d | 80 | unsigned long total_size); |
769d7dc4 AC |
81 | void (*deprecated_pre_add_symbol_hook) (const char *); |
82 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 83 | |
286526c1 TT |
84 | using clear_symtab_users_cleanup |
85 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 86 | |
c378eb4e | 87 | /* Global variables owned by this file. */ |
fe7a351a SM |
88 | |
89 | /* See symfile.h. */ | |
90 | ||
91 | int readnow_symbol_files; | |
92 | ||
93 | /* See symfile.h. */ | |
94 | ||
95 | int readnever_symbol_files; | |
c906108c | 96 | |
c378eb4e | 97 | /* Functions this file defines. */ |
c906108c | 98 | |
ecf45d2c | 99 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 100 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 101 | |
00b5771c | 102 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 103 | |
a14ed312 | 104 | static void overlay_invalidate_all (void); |
c906108c | 105 | |
a14ed312 | 106 | static void simple_free_overlay_table (void); |
c906108c | 107 | |
e17a4113 UW |
108 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
109 | enum bfd_endian); | |
c906108c | 110 | |
a14ed312 | 111 | static int simple_read_overlay_table (void); |
c906108c | 112 | |
a14ed312 | 113 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 114 | |
31d99776 DJ |
115 | static void symfile_find_segment_sections (struct objfile *objfile); |
116 | ||
c906108c SS |
117 | /* List of all available sym_fns. On gdb startup, each object file reader |
118 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 119 | prepared to read. */ |
c906108c | 120 | |
905014d7 | 121 | struct registered_sym_fns |
c256e171 | 122 | { |
905014d7 SM |
123 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
124 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
125 | {} | |
126 | ||
c256e171 DE |
127 | /* BFD flavour that we handle. */ |
128 | enum bfd_flavour sym_flavour; | |
129 | ||
130 | /* The "vtable" of symbol functions. */ | |
131 | const struct sym_fns *sym_fns; | |
905014d7 | 132 | }; |
c256e171 | 133 | |
905014d7 | 134 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 135 | |
770e7fc7 DE |
136 | /* Values for "set print symbol-loading". */ |
137 | ||
138 | const char print_symbol_loading_off[] = "off"; | |
139 | const char print_symbol_loading_brief[] = "brief"; | |
140 | const char print_symbol_loading_full[] = "full"; | |
141 | static const char *print_symbol_loading_enums[] = | |
142 | { | |
143 | print_symbol_loading_off, | |
144 | print_symbol_loading_brief, | |
145 | print_symbol_loading_full, | |
146 | NULL | |
147 | }; | |
148 | static const char *print_symbol_loading = print_symbol_loading_full; | |
149 | ||
f2f24aa9 | 150 | /* See symfile.h. */ |
c906108c | 151 | |
491144b5 | 152 | bool auto_solib_add = true; |
c906108c | 153 | \f |
c5aa993b | 154 | |
770e7fc7 DE |
155 | /* Return non-zero if symbol-loading messages should be printed. |
156 | FROM_TTY is the standard from_tty argument to gdb commands. | |
157 | If EXEC is non-zero the messages are for the executable. | |
158 | Otherwise, messages are for shared libraries. | |
159 | If FULL is non-zero then the caller is printing a detailed message. | |
160 | E.g., the message includes the shared library name. | |
161 | Otherwise, the caller is printing a brief "summary" message. */ | |
162 | ||
163 | int | |
164 | print_symbol_loading_p (int from_tty, int exec, int full) | |
165 | { | |
166 | if (!from_tty && !info_verbose) | |
167 | return 0; | |
168 | ||
169 | if (exec) | |
170 | { | |
171 | /* We don't check FULL for executables, there are few such | |
172 | messages, therefore brief == full. */ | |
173 | return print_symbol_loading != print_symbol_loading_off; | |
174 | } | |
175 | if (full) | |
176 | return print_symbol_loading == print_symbol_loading_full; | |
177 | return print_symbol_loading == print_symbol_loading_brief; | |
178 | } | |
179 | ||
0d14a781 | 180 | /* True if we are reading a symbol table. */ |
c906108c SS |
181 | |
182 | int currently_reading_symtab = 0; | |
183 | ||
ccefe4c4 TT |
184 | /* Increment currently_reading_symtab and return a cleanup that can be |
185 | used to decrement it. */ | |
3b7bacac | 186 | |
c83dd867 | 187 | scoped_restore_tmpl<int> |
ccefe4c4 | 188 | increment_reading_symtab (void) |
c906108c | 189 | { |
c83dd867 TT |
190 | gdb_assert (currently_reading_symtab >= 0); |
191 | return make_scoped_restore (¤tly_reading_symtab, | |
192 | currently_reading_symtab + 1); | |
c906108c SS |
193 | } |
194 | ||
5417f6dc | 195 | /* Remember the lowest-addressed loadable section we've seen. |
c906108c SS |
196 | |
197 | In case of equal vmas, the section with the largest size becomes the | |
198 | lowest-addressed loadable section. | |
199 | ||
200 | If the vmas and sizes are equal, the last section is considered the | |
201 | lowest-addressed loadable section. */ | |
202 | ||
ad7277da TT |
203 | static void |
204 | find_lowest_section (asection *sect, asection **lowest) | |
c906108c | 205 | { |
fd361982 | 206 | if (0 == (bfd_section_flags (sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
207 | return; |
208 | if (!*lowest) | |
209 | *lowest = sect; /* First loadable section */ | |
fd361982 | 210 | else if (bfd_section_vma (*lowest) > bfd_section_vma (sect)) |
c906108c | 211 | *lowest = sect; /* A lower loadable section */ |
fd361982 AM |
212 | else if (bfd_section_vma (*lowest) == bfd_section_vma (sect) |
213 | && (bfd_section_size (*lowest) <= bfd_section_size (sect))) | |
c906108c SS |
214 | *lowest = sect; |
215 | } | |
216 | ||
62557bbc | 217 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 218 | an existing section table. */ |
62557bbc | 219 | |
37e136b1 | 220 | section_addr_info |
bb2a6777 | 221 | build_section_addr_info_from_section_table (const target_section_table &table) |
62557bbc | 222 | { |
37e136b1 | 223 | section_addr_info sap; |
62557bbc | 224 | |
d7a78e5c | 225 | for (const target_section &stp : table) |
62557bbc | 226 | { |
bb2a6777 | 227 | struct bfd_section *asect = stp.the_bfd_section; |
2b2848e2 DE |
228 | bfd *abfd = asect->owner; |
229 | ||
fd361982 | 230 | if (bfd_section_flags (asect) & (SEC_ALLOC | SEC_LOAD) |
d7a78e5c | 231 | && sap.size () < table.size ()) |
bb2a6777 | 232 | sap.emplace_back (stp.addr, |
fd361982 | 233 | bfd_section_name (asect), |
37e136b1 | 234 | gdb_bfd_section_index (abfd, asect)); |
62557bbc KB |
235 | } |
236 | ||
237 | return sap; | |
238 | } | |
239 | ||
82ccf5a5 | 240 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 241 | |
37e136b1 | 242 | static section_addr_info |
82ccf5a5 | 243 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 244 | { |
089b4803 TG |
245 | struct bfd_section *sec; |
246 | ||
37e136b1 TT |
247 | section_addr_info sap; |
248 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
fd361982 AM |
249 | if (bfd_section_flags (sec) & (SEC_ALLOC | SEC_LOAD)) |
250 | sap.emplace_back (bfd_section_vma (sec), | |
251 | bfd_section_name (sec), | |
37e136b1 | 252 | gdb_bfd_section_index (abfd, sec)); |
d76488d8 | 253 | |
089b4803 TG |
254 | return sap; |
255 | } | |
256 | ||
82ccf5a5 JK |
257 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
258 | ||
37e136b1 | 259 | section_addr_info |
82ccf5a5 JK |
260 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
261 | { | |
82ccf5a5 JK |
262 | int i; |
263 | ||
264 | /* Before reread_symbols gets rewritten it is not safe to call: | |
265 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
266 | */ | |
37e136b1 TT |
267 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
268 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 269 | { |
37e136b1 | 270 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 271 | |
6a053cb1 | 272 | sap[i].addr += objfile->section_offsets[sectindex]; |
82ccf5a5 JK |
273 | } |
274 | return sap; | |
275 | } | |
62557bbc | 276 | |
e8289572 | 277 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 278 | |
e8289572 JB |
279 | static void |
280 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 281 | { |
e8289572 | 282 | asection *sect; |
c906108c | 283 | int i; |
5417f6dc | 284 | |
b8fbeb18 | 285 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 286 | if (sect) |
b8fbeb18 EZ |
287 | objfile->sect_index_text = sect->index; |
288 | ||
289 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 290 | if (sect) |
b8fbeb18 EZ |
291 | objfile->sect_index_data = sect->index; |
292 | ||
293 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 294 | if (sect) |
b8fbeb18 EZ |
295 | objfile->sect_index_bss = sect->index; |
296 | ||
297 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 298 | if (sect) |
b8fbeb18 EZ |
299 | objfile->sect_index_rodata = sect->index; |
300 | ||
bbcd32ad FF |
301 | /* This is where things get really weird... We MUST have valid |
302 | indices for the various sect_index_* members or gdb will abort. | |
303 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
304 | accomodate that. First, check for a file with the standard |
305 | one or two segments. */ | |
306 | ||
307 | symfile_find_segment_sections (objfile); | |
308 | ||
309 | /* Except when explicitly adding symbol files at some address, | |
310 | section_offsets contains nothing but zeros, so it doesn't matter | |
311 | which slot in section_offsets the individual sect_index_* members | |
312 | index into. So if they are all zero, it is safe to just point | |
313 | all the currently uninitialized indices to the first slot. But | |
314 | beware: if this is the main executable, it may be relocated | |
315 | later, e.g. by the remote qOffsets packet, and then this will | |
316 | be wrong! That's why we try segments first. */ | |
bbcd32ad | 317 | |
6a053cb1 | 318 | for (i = 0; i < objfile->section_offsets.size (); i++) |
bbcd32ad | 319 | { |
6a053cb1 | 320 | if (objfile->section_offsets[i] != 0) |
bbcd32ad FF |
321 | { |
322 | break; | |
323 | } | |
324 | } | |
6a053cb1 | 325 | if (i == objfile->section_offsets.size ()) |
bbcd32ad FF |
326 | { |
327 | if (objfile->sect_index_text == -1) | |
328 | objfile->sect_index_text = 0; | |
329 | if (objfile->sect_index_data == -1) | |
330 | objfile->sect_index_data = 0; | |
331 | if (objfile->sect_index_bss == -1) | |
332 | objfile->sect_index_bss = 0; | |
333 | if (objfile->sect_index_rodata == -1) | |
334 | objfile->sect_index_rodata = 0; | |
335 | } | |
b8fbeb18 | 336 | } |
c906108c | 337 | |
c1bd25fd DJ |
338 | /* Find a unique offset to use for loadable section SECT if |
339 | the user did not provide an offset. */ | |
340 | ||
2c0b251b | 341 | static void |
ad7277da TT |
342 | place_section (bfd *abfd, asection *sect, section_offsets &offsets, |
343 | CORE_ADDR &lowest) | |
c1bd25fd | 344 | { |
6a053cb1 | 345 | CORE_ADDR start_addr; |
c1bd25fd | 346 | int done; |
fd361982 | 347 | ULONGEST align = ((ULONGEST) 1) << bfd_section_alignment (sect); |
c1bd25fd | 348 | |
2711e456 | 349 | /* We are only interested in allocated sections. */ |
fd361982 | 350 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
351 | return; |
352 | ||
353 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 354 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
355 | return; |
356 | ||
357 | /* Otherwise, let's try to find a place for the section. */ | |
ad7277da | 358 | start_addr = (lowest + align - 1) & -align; |
3bd72c6f | 359 | |
c1bd25fd DJ |
360 | do { |
361 | asection *cur_sec; | |
c1bd25fd | 362 | |
c1bd25fd DJ |
363 | done = 1; |
364 | ||
365 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
366 | { | |
367 | int indx = cur_sec->index; | |
c1bd25fd DJ |
368 | |
369 | /* We don't need to compare against ourself. */ | |
370 | if (cur_sec == sect) | |
371 | continue; | |
372 | ||
2711e456 | 373 | /* We can only conflict with allocated sections. */ |
fd361982 | 374 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
375 | continue; |
376 | ||
377 | /* If the section offset is 0, either the section has not been placed | |
378 | yet, or it was the lowest section placed (in which case LOWEST | |
379 | will be past its end). */ | |
380 | if (offsets[indx] == 0) | |
381 | continue; | |
382 | ||
383 | /* If this section would overlap us, then we must move up. */ | |
fd361982 AM |
384 | if (start_addr + bfd_section_size (sect) > offsets[indx] |
385 | && start_addr < offsets[indx] + bfd_section_size (cur_sec)) | |
c1bd25fd | 386 | { |
fd361982 | 387 | start_addr = offsets[indx] + bfd_section_size (cur_sec); |
c1bd25fd DJ |
388 | start_addr = (start_addr + align - 1) & -align; |
389 | done = 0; | |
3bd72c6f | 390 | break; |
c1bd25fd DJ |
391 | } |
392 | ||
393 | /* Otherwise, we appear to be OK. So far. */ | |
394 | } | |
395 | } | |
396 | while (!done); | |
397 | ||
65cf3563 | 398 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
ad7277da | 399 | lowest = start_addr + bfd_section_size (sect); |
c1bd25fd | 400 | } |
e8289572 | 401 | |
4f7ae6f5 | 402 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
6a053cb1 | 403 | filled-in) by addr_info_make_relative into SECTION_OFFSETS. */ |
e8289572 JB |
404 | |
405 | void | |
6a053cb1 | 406 | relative_addr_info_to_section_offsets (section_offsets §ion_offsets, |
37e136b1 | 407 | const section_addr_info &addrs) |
e8289572 JB |
408 | { |
409 | int i; | |
410 | ||
6a053cb1 | 411 | section_offsets.assign (section_offsets.size (), 0); |
e8289572 | 412 | |
c378eb4e | 413 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 414 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 415 | { |
3189cb12 | 416 | const struct other_sections *osp; |
e8289572 | 417 | |
37e136b1 | 418 | osp = &addrs[i]; |
5488dafb | 419 | if (osp->sectindex == -1) |
e8289572 JB |
420 | continue; |
421 | ||
c378eb4e | 422 | /* Record all sections in offsets. */ |
e8289572 | 423 | /* The section_offsets in the objfile are here filled in using |
dda83cd7 | 424 | the BFD index. */ |
6a053cb1 | 425 | section_offsets[osp->sectindex] = osp->addr; |
75242ef4 JK |
426 | } |
427 | } | |
428 | ||
1276c759 JK |
429 | /* Transform section name S for a name comparison. prelink can split section |
430 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
431 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
432 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
433 | (`.sbss') section has invalid (increased) virtual address. */ | |
434 | ||
435 | static const char * | |
436 | addr_section_name (const char *s) | |
437 | { | |
438 | if (strcmp (s, ".dynbss") == 0) | |
439 | return ".bss"; | |
440 | if (strcmp (s, ".sdynbss") == 0) | |
441 | return ".sbss"; | |
442 | ||
443 | return s; | |
444 | } | |
445 | ||
37e136b1 TT |
446 | /* std::sort comparator for addrs_section_sort. Sort entries in |
447 | ascending order by their (name, sectindex) pair. sectindex makes | |
448 | the sort by name stable. */ | |
82ccf5a5 | 449 | |
37e136b1 TT |
450 | static bool |
451 | addrs_section_compar (const struct other_sections *a, | |
452 | const struct other_sections *b) | |
82ccf5a5 | 453 | { |
22e048c9 | 454 | int retval; |
82ccf5a5 | 455 | |
37e136b1 TT |
456 | retval = strcmp (addr_section_name (a->name.c_str ()), |
457 | addr_section_name (b->name.c_str ())); | |
458 | if (retval != 0) | |
459 | return retval < 0; | |
82ccf5a5 | 460 | |
37e136b1 | 461 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
462 | } |
463 | ||
37e136b1 | 464 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 465 | |
37e136b1 TT |
466 | static std::vector<const struct other_sections *> |
467 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 468 | { |
82ccf5a5 JK |
469 | int i; |
470 | ||
37e136b1 TT |
471 | std::vector<const struct other_sections *> array (addrs.size ()); |
472 | for (i = 0; i < addrs.size (); i++) | |
473 | array[i] = &addrs[i]; | |
82ccf5a5 | 474 | |
37e136b1 | 475 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
476 | |
477 | return array; | |
478 | } | |
479 | ||
75242ef4 | 480 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
481 | also SECTINDEXes specific to ABFD there. This function can be used to |
482 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
483 | |
484 | void | |
37e136b1 | 485 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
486 | { |
487 | asection *lower_sect; | |
75242ef4 JK |
488 | CORE_ADDR lower_offset; |
489 | int i; | |
490 | ||
491 | /* Find lowest loadable section to be used as starting point for | |
85102364 | 492 | contiguous sections. */ |
e76ab67f | 493 | lower_sect = NULL; |
ad7277da TT |
494 | for (asection *iter : gdb_bfd_sections (abfd)) |
495 | find_lowest_section (iter, &lower_sect); | |
75242ef4 JK |
496 | if (lower_sect == NULL) |
497 | { | |
498 | warning (_("no loadable sections found in added symbol-file %s"), | |
499 | bfd_get_filename (abfd)); | |
500 | lower_offset = 0; | |
e8289572 | 501 | } |
75242ef4 | 502 | else |
fd361982 | 503 | lower_offset = bfd_section_vma (lower_sect); |
75242ef4 | 504 | |
82ccf5a5 JK |
505 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
506 | in ABFD. Section names are not unique - there can be multiple sections of | |
507 | the same name. Also the sections of the same name do not have to be | |
508 | adjacent to each other. Some sections may be present only in one of the | |
509 | files. Even sections present in both files do not have to be in the same | |
510 | order. | |
511 | ||
512 | Use stable sort by name for the sections in both files. Then linearly | |
513 | scan both lists matching as most of the entries as possible. */ | |
514 | ||
37e136b1 TT |
515 | std::vector<const struct other_sections *> addrs_sorted |
516 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 517 | |
37e136b1 TT |
518 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
519 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
520 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 521 | |
c378eb4e MS |
522 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
523 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 524 | |
37e136b1 TT |
525 | std::vector<const struct other_sections *> |
526 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 527 | |
37e136b1 TT |
528 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
529 | = abfd_addrs_sorted.begin (); | |
52941706 | 530 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 531 | { |
37e136b1 | 532 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 533 | |
37e136b1 TT |
534 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
535 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 536 | sect_name) < 0) |
37e136b1 | 537 | abfd_sorted_iter++; |
82ccf5a5 | 538 | |
37e136b1 TT |
539 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
540 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 541 | sect_name) == 0) |
82ccf5a5 JK |
542 | { |
543 | int index_in_addrs; | |
544 | ||
545 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 546 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 547 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 548 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
549 | |
550 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 551 | abfd_sorted_iter++; |
82ccf5a5 | 552 | } |
82ccf5a5 JK |
553 | } |
554 | ||
75242ef4 JK |
555 | /* Calculate offsets for the loadable sections. |
556 | FIXME! Sections must be in order of increasing loadable section | |
557 | so that contiguous sections can use the lower-offset!!! | |
558 | ||
559 | Adjust offsets if the segments are not contiguous. | |
560 | If the section is contiguous, its offset should be set to | |
561 | the offset of the highest loadable section lower than it | |
562 | (the loadable section directly below it in memory). | |
563 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
564 | ||
37e136b1 | 565 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 566 | { |
37e136b1 | 567 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
568 | |
569 | if (sect) | |
75242ef4 | 570 | { |
c378eb4e | 571 | /* This is the index used by BFD. */ |
37e136b1 | 572 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 573 | |
37e136b1 | 574 | if ((*addrs)[i].addr != 0) |
75242ef4 | 575 | { |
37e136b1 TT |
576 | (*addrs)[i].addr -= sect->addr; |
577 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
578 | } |
579 | else | |
37e136b1 | 580 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
581 | } |
582 | else | |
672d9c23 | 583 | { |
1276c759 | 584 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 585 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 586 | |
b0fcb67f JK |
587 | /* This section does not exist in ABFD, which is normally |
588 | unexpected and we want to issue a warning. | |
589 | ||
4d9743af JK |
590 | However, the ELF prelinker does create a few sections which are |
591 | marked in the main executable as loadable (they are loaded in | |
592 | memory from the DYNAMIC segment) and yet are not present in | |
593 | separate debug info files. This is fine, and should not cause | |
594 | a warning. Shared libraries contain just the section | |
595 | ".gnu.liblist" but it is not marked as loadable there. There is | |
596 | no other way to identify them than by their name as the sections | |
1276c759 JK |
597 | created by prelink have no special flags. |
598 | ||
599 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 600 | |
37e136b1 TT |
601 | if (!(sect_name == ".gnu.liblist" |
602 | || sect_name == ".gnu.conflict" | |
603 | || (sect_name == ".bss" | |
1276c759 | 604 | && i > 0 |
37e136b1 | 605 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 606 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 607 | || (sect_name == ".sbss" |
1276c759 | 608 | && i > 0 |
37e136b1 | 609 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 610 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 611 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
612 | bfd_get_filename (abfd)); |
613 | ||
37e136b1 TT |
614 | (*addrs)[i].addr = 0; |
615 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 616 | } |
75242ef4 JK |
617 | } |
618 | } | |
619 | ||
620 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
621 | of how to represent it for fast symbol reading. This is the default | |
622 | version of the sym_fns.sym_offsets function for symbol readers that | |
623 | don't need to do anything special. It allocates a section_offsets table | |
624 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
625 | ||
626 | void | |
627 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 628 | const section_addr_info &addrs) |
75242ef4 | 629 | { |
6a053cb1 TT |
630 | objfile->section_offsets.resize (gdb_bfd_count_sections (objfile->obfd)); |
631 | relative_addr_info_to_section_offsets (objfile->section_offsets, addrs); | |
e8289572 | 632 | |
c1bd25fd DJ |
633 | /* For relocatable files, all loadable sections will start at zero. |
634 | The zero is meaningless, so try to pick arbitrary addresses such | |
635 | that no loadable sections overlap. This algorithm is quadratic, | |
636 | but the number of sections in a single object file is generally | |
637 | small. */ | |
638 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
639 | { | |
2711e456 DJ |
640 | bfd *abfd = objfile->obfd; |
641 | asection *cur_sec; | |
2711e456 DJ |
642 | |
643 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
644 | /* We do not expect this to happen; just skip this step if the | |
645 | relocatable file has a section with an assigned VMA. */ | |
fd361982 | 646 | if (bfd_section_vma (cur_sec) != 0) |
2711e456 DJ |
647 | break; |
648 | ||
649 | if (cur_sec == NULL) | |
650 | { | |
6a053cb1 | 651 | section_offsets &offsets = objfile->section_offsets; |
2711e456 DJ |
652 | |
653 | /* Pick non-overlapping offsets for sections the user did not | |
654 | place explicitly. */ | |
ad7277da TT |
655 | CORE_ADDR lowest = 0; |
656 | for (asection *sect : gdb_bfd_sections (objfile->obfd)) | |
657 | place_section (objfile->obfd, sect, objfile->section_offsets, | |
658 | lowest); | |
2711e456 DJ |
659 | |
660 | /* Correctly filling in the section offsets is not quite | |
661 | enough. Relocatable files have two properties that | |
662 | (most) shared objects do not: | |
663 | ||
664 | - Their debug information will contain relocations. Some | |
665 | shared libraries do also, but many do not, so this can not | |
666 | be assumed. | |
667 | ||
668 | - If there are multiple code sections they will be loaded | |
669 | at different relative addresses in memory than they are | |
670 | in the objfile, since all sections in the file will start | |
671 | at address zero. | |
672 | ||
673 | Because GDB has very limited ability to map from an | |
674 | address in debug info to the correct code section, | |
675 | it relies on adding SECT_OFF_TEXT to things which might be | |
676 | code. If we clear all the section offsets, and set the | |
677 | section VMAs instead, then symfile_relocate_debug_section | |
678 | will return meaningful debug information pointing at the | |
679 | correct sections. | |
680 | ||
681 | GDB has too many different data structures for section | |
682 | addresses - a bfd, objfile, and so_list all have section | |
683 | tables, as does exec_ops. Some of these could probably | |
684 | be eliminated. */ | |
685 | ||
686 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
687 | cur_sec = cur_sec->next) | |
688 | { | |
fd361982 | 689 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
2711e456 DJ |
690 | continue; |
691 | ||
fd361982 | 692 | bfd_set_section_vma (cur_sec, offsets[cur_sec->index]); |
3e43a32a MS |
693 | exec_set_section_address (bfd_get_filename (abfd), |
694 | cur_sec->index, | |
30510692 | 695 | offsets[cur_sec->index]); |
2711e456 DJ |
696 | offsets[cur_sec->index] = 0; |
697 | } | |
698 | } | |
c1bd25fd DJ |
699 | } |
700 | ||
e8289572 | 701 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 702 | .rodata sections. */ |
e8289572 JB |
703 | init_objfile_sect_indices (objfile); |
704 | } | |
705 | ||
31d99776 DJ |
706 | /* Divide the file into segments, which are individual relocatable units. |
707 | This is the default version of the sym_fns.sym_segments function for | |
708 | symbol readers that do not have an explicit representation of segments. | |
709 | It assumes that object files do not have segments, and fully linked | |
710 | files have a single segment. */ | |
711 | ||
62982abd | 712 | symfile_segment_data_up |
31d99776 DJ |
713 | default_symfile_segments (bfd *abfd) |
714 | { | |
715 | int num_sections, i; | |
716 | asection *sect; | |
31d99776 DJ |
717 | CORE_ADDR low, high; |
718 | ||
719 | /* Relocatable files contain enough information to position each | |
720 | loadable section independently; they should not be relocated | |
721 | in segments. */ | |
722 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
723 | return NULL; | |
724 | ||
725 | /* Make sure there is at least one loadable section in the file. */ | |
726 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
727 | { | |
fd361982 | 728 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
729 | continue; |
730 | ||
731 | break; | |
732 | } | |
733 | if (sect == NULL) | |
734 | return NULL; | |
735 | ||
fd361982 AM |
736 | low = bfd_section_vma (sect); |
737 | high = low + bfd_section_size (sect); | |
31d99776 | 738 | |
62982abd | 739 | symfile_segment_data_up data (new symfile_segment_data); |
31d99776 DJ |
740 | |
741 | num_sections = bfd_count_sections (abfd); | |
9005fbbb SM |
742 | |
743 | /* All elements are initialized to 0 (map to no segment). */ | |
744 | data->segment_info.resize (num_sections); | |
31d99776 DJ |
745 | |
746 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
747 | { | |
748 | CORE_ADDR vma; | |
749 | ||
fd361982 | 750 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
751 | continue; |
752 | ||
fd361982 | 753 | vma = bfd_section_vma (sect); |
31d99776 DJ |
754 | if (vma < low) |
755 | low = vma; | |
fd361982 AM |
756 | if (vma + bfd_section_size (sect) > high) |
757 | high = vma + bfd_section_size (sect); | |
31d99776 DJ |
758 | |
759 | data->segment_info[i] = 1; | |
760 | } | |
761 | ||
68b888ff | 762 | data->segments.emplace_back (low, high - low); |
31d99776 DJ |
763 | |
764 | return data; | |
765 | } | |
766 | ||
608e2dbb TT |
767 | /* This is a convenience function to call sym_read for OBJFILE and |
768 | possibly force the partial symbols to be read. */ | |
769 | ||
770 | static void | |
b15cc25c | 771 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
772 | { |
773 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 774 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
775 | |
776 | /* find_separate_debug_file_in_section should be called only if there is | |
777 | single binary with no existing separate debug info file. */ | |
a8ad4f3c | 778 | if (!objfile->has_partial_symbols () |
8a92335b JK |
779 | && objfile->separate_debug_objfile == NULL |
780 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 781 | { |
192b62ce | 782 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
783 | |
784 | if (abfd != NULL) | |
24ba069a JK |
785 | { |
786 | /* find_separate_debug_file_in_section uses the same filename for the | |
787 | virtual section-as-bfd like the bfd filename containing the | |
788 | section. Therefore use also non-canonical name form for the same | |
789 | file containing the section. */ | |
921222e2 TT |
790 | symbol_file_add_separate (abfd.get (), |
791 | bfd_get_filename (abfd.get ()), | |
792 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 793 | } |
608e2dbb TT |
794 | } |
795 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
26abc753 | 796 | require_partial_symbols (objfile, false); |
608e2dbb TT |
797 | } |
798 | ||
3d6e24f0 JB |
799 | /* Initialize entry point information for this objfile. */ |
800 | ||
801 | static void | |
802 | init_entry_point_info (struct objfile *objfile) | |
803 | { | |
6ef55de7 TT |
804 | struct entry_info *ei = &objfile->per_bfd->ei; |
805 | ||
806 | if (ei->initialized) | |
807 | return; | |
808 | ei->initialized = 1; | |
809 | ||
3d6e24f0 JB |
810 | /* Save startup file's range of PC addresses to help blockframe.c |
811 | decide where the bottom of the stack is. */ | |
812 | ||
813 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
814 | { | |
815 | /* Executable file -- record its entry point so we'll recognize | |
dda83cd7 | 816 | the startup file because it contains the entry point. */ |
6ef55de7 TT |
817 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
818 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
819 | } |
820 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
821 | && bfd_get_start_address (objfile->obfd) != 0) | |
822 | { | |
823 | /* Some shared libraries may have entry points set and be | |
824 | runnable. There's no clear way to indicate this, so just check | |
825 | for values other than zero. */ | |
6ef55de7 TT |
826 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
827 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
828 | } |
829 | else | |
830 | { | |
831 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 832 | ei->entry_point_p = 0; |
3d6e24f0 JB |
833 | } |
834 | ||
6ef55de7 | 835 | if (ei->entry_point_p) |
3d6e24f0 | 836 | { |
53eddfa6 | 837 | struct obj_section *osect; |
6ef55de7 | 838 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 839 | int found; |
3d6e24f0 JB |
840 | |
841 | /* Make certain that the address points at real code, and not a | |
842 | function descriptor. */ | |
843 | entry_point | |
08feed99 | 844 | = gdbarch_convert_from_func_ptr_addr (objfile->arch (), |
3d6e24f0 | 845 | entry_point, |
8b88a78e | 846 | current_top_target ()); |
3d6e24f0 JB |
847 | |
848 | /* Remove any ISA markers, so that this matches entries in the | |
849 | symbol table. */ | |
6ef55de7 | 850 | ei->entry_point |
08feed99 | 851 | = gdbarch_addr_bits_remove (objfile->arch (), entry_point); |
53eddfa6 TT |
852 | |
853 | found = 0; | |
854 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
855 | { | |
856 | struct bfd_section *sect = osect->the_bfd_section; | |
857 | ||
fd361982 AM |
858 | if (entry_point >= bfd_section_vma (sect) |
859 | && entry_point < (bfd_section_vma (sect) | |
860 | + bfd_section_size (sect))) | |
53eddfa6 | 861 | { |
6ef55de7 | 862 | ei->the_bfd_section_index |
53eddfa6 TT |
863 | = gdb_bfd_section_index (objfile->obfd, sect); |
864 | found = 1; | |
865 | break; | |
866 | } | |
867 | } | |
868 | ||
869 | if (!found) | |
6ef55de7 | 870 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
871 | } |
872 | } | |
873 | ||
c906108c SS |
874 | /* Process a symbol file, as either the main file or as a dynamically |
875 | loaded file. | |
876 | ||
36e4d068 JB |
877 | This function does not set the OBJFILE's entry-point info. |
878 | ||
96baa820 JM |
879 | OBJFILE is where the symbols are to be read from. |
880 | ||
7e8580c1 JB |
881 | ADDRS is the list of section load addresses. If the user has given |
882 | an 'add-symbol-file' command, then this is the list of offsets and | |
883 | addresses he or she provided as arguments to the command; or, if | |
884 | we're handling a shared library, these are the actual addresses the | |
885 | sections are loaded at, according to the inferior's dynamic linker | |
886 | (as gleaned by GDB's shared library code). We convert each address | |
887 | into an offset from the section VMA's as it appears in the object | |
888 | file, and then call the file's sym_offsets function to convert this | |
6a053cb1 | 889 | into a format-specific offset table --- a `section_offsets'. |
d81a3eaf PT |
890 | The sectindex field is used to control the ordering of sections |
891 | with the same name. Upon return, it is updated to contain the | |
85102364 | 892 | corresponding BFD section index, or -1 if the section was not found. |
96baa820 | 893 | |
7eedccfa | 894 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
f71433ee | 895 | an extra symbol file such as dynamically loaded code, and whether |
7eedccfa | 896 | breakpoint reset should be deferred. */ |
c906108c | 897 | |
36e4d068 JB |
898 | static void |
899 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 900 | section_addr_info *addrs, |
b15cc25c | 901 | symfile_add_flags add_flags) |
c906108c | 902 | { |
37e136b1 | 903 | section_addr_info local_addr; |
7eedccfa | 904 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 905 | |
8fb8eb5c | 906 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 907 | |
75245b24 | 908 | if (objfile->sf == NULL) |
36e4d068 JB |
909 | { |
910 | /* No symbols to load, but we still need to make sure | |
911 | that the section_offsets table is allocated. */ | |
d445b2f6 | 912 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
36e4d068 | 913 | |
6a053cb1 | 914 | objfile->section_offsets.assign (num_sections, 0); |
36e4d068 JB |
915 | return; |
916 | } | |
75245b24 | 917 | |
c906108c SS |
918 | /* Make sure that partially constructed symbol tables will be cleaned up |
919 | if an error occurs during symbol reading. */ | |
286526c1 TT |
920 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
921 | ||
268e4f09 | 922 | objfile_up objfile_holder (objfile); |
c906108c | 923 | |
6bf667bb DE |
924 | /* If ADDRS is NULL, put together a dummy address list. |
925 | We now establish the convention that an addr of zero means | |
c378eb4e | 926 | no load address was specified. */ |
6bf667bb | 927 | if (! addrs) |
37e136b1 | 928 | addrs = &local_addr; |
a39a16c4 | 929 | |
c5aa993b | 930 | if (mainline) |
c906108c SS |
931 | { |
932 | /* We will modify the main symbol table, make sure that all its users | |
dda83cd7 | 933 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 934 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
935 | |
936 | /* Since no error yet, throw away the old symbol table. */ | |
937 | ||
a42d7dd8 | 938 | if (current_program_space->symfile_object_file != NULL) |
c906108c | 939 | { |
a42d7dd8 TT |
940 | current_program_space->symfile_object_file->unlink (); |
941 | gdb_assert (current_program_space->symfile_object_file == NULL); | |
c906108c SS |
942 | } |
943 | ||
944 | /* Currently we keep symbols from the add-symbol-file command. | |
dda83cd7 SM |
945 | If the user wants to get rid of them, they should do "symbol-file" |
946 | without arguments first. Not sure this is the best behavior | |
947 | (PR 2207). */ | |
c906108c | 948 | |
c5aa993b | 949 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
950 | } |
951 | ||
952 | /* Convert addr into an offset rather than an absolute address. | |
953 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 954 | and assume that <addr> is where that got loaded. |
c906108c | 955 | |
53a5351d JM |
956 | We no longer warn if the lowest section is not a text segment (as |
957 | happens for the PA64 port. */ | |
37e136b1 | 958 | if (addrs->size () > 0) |
75242ef4 | 959 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
960 | |
961 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
962 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 963 | initial symbol reading for this file. */ |
c906108c | 964 | |
c5aa993b | 965 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 966 | clear_complaints (); |
c906108c | 967 | |
37e136b1 | 968 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 969 | |
608e2dbb | 970 | read_symbols (objfile, add_flags); |
b11896a5 | 971 | |
c906108c SS |
972 | /* Discard cleanups as symbol reading was successful. */ |
973 | ||
ed2b3126 | 974 | objfile_holder.release (); |
286526c1 TT |
975 | if (defer_clear_users) |
976 | defer_clear_users->release (); | |
c906108c SS |
977 | } |
978 | ||
36e4d068 JB |
979 | /* Same as syms_from_objfile_1, but also initializes the objfile |
980 | entry-point info. */ | |
981 | ||
6bf667bb | 982 | static void |
36e4d068 | 983 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 984 | section_addr_info *addrs, |
b15cc25c | 985 | symfile_add_flags add_flags) |
36e4d068 | 986 | { |
6bf667bb | 987 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
988 | init_entry_point_info (objfile); |
989 | } | |
990 | ||
c906108c SS |
991 | /* Perform required actions after either reading in the initial |
992 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 993 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 994 | |
e7d52ed3 | 995 | static void |
b15cc25c | 996 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 997 | { |
c906108c | 998 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 999 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1000 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1001 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1002 | { |
1003 | /* OK, make it the "real" symbol file. */ | |
a42d7dd8 | 1004 | current_program_space->symfile_object_file = objfile; |
c906108c | 1005 | |
c1e56572 | 1006 | clear_symtab_users (add_flags); |
c906108c | 1007 | } |
7eedccfa | 1008 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1009 | { |
69de3c6a | 1010 | breakpoint_re_set (); |
c906108c SS |
1011 | } |
1012 | ||
1013 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1014 | clear_complaints (); |
c906108c SS |
1015 | } |
1016 | ||
1017 | /* Process a symbol file, as either the main file or as a dynamically | |
1018 | loaded file. | |
1019 | ||
5417f6dc | 1020 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1021 | A new reference is acquired by this function. |
7904e09f | 1022 | |
9e86da07 | 1023 | For NAME description see the objfile constructor. |
24ba069a | 1024 | |
7eedccfa | 1025 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
30baf67b | 1026 | extra, such as dynamically loaded code, and what to do with breakpoints. |
7904e09f | 1027 | |
6bf667bb | 1028 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1029 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1030 | |
63524580 JK |
1031 | PARENT is the original objfile if ABFD is a separate debug info file. |
1032 | Otherwise PARENT is NULL. | |
1033 | ||
c906108c | 1034 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1035 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1036 | |
7904e09f | 1037 | static struct objfile * |
b15cc25c PA |
1038 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1039 | symfile_add_flags add_flags, | |
37e136b1 | 1040 | section_addr_info *addrs, |
b15cc25c | 1041 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1042 | { |
1043 | struct objfile *objfile; | |
7eedccfa | 1044 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1045 | const int mainline = add_flags & SYMFILE_MAINLINE; |
a8654e7d | 1046 | const int always_confirm = add_flags & SYMFILE_ALWAYS_CONFIRM; |
770e7fc7 | 1047 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1048 | && (readnow_symbol_files |
1049 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1050 | |
9291a0cd | 1051 | if (readnow_symbol_files) |
b11896a5 TT |
1052 | { |
1053 | flags |= OBJF_READNOW; | |
1054 | add_flags &= ~SYMFILE_NO_READ; | |
1055 | } | |
97cbe998 SDJ |
1056 | else if (readnever_symbol_files |
1057 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1058 | { | |
1059 | flags |= OBJF_READNEVER; | |
1060 | add_flags |= SYMFILE_NO_READ; | |
1061 | } | |
921222e2 TT |
1062 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1063 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1064 | |
a8654e7d | 1065 | /* Give user a chance to burp if ALWAYS_CONFIRM or we'd be |
5417f6dc | 1066 | interactively wiping out any existing symbols. */ |
c906108c | 1067 | |
a8654e7d PW |
1068 | if (from_tty |
1069 | && (always_confirm | |
1070 | || ((have_full_symbols () || have_partial_symbols ()) | |
1071 | && mainline)) | |
9e2f0ad4 | 1072 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1073 | error (_("Not confirmed.")); |
c906108c | 1074 | |
b15cc25c PA |
1075 | if (mainline) |
1076 | flags |= OBJF_MAINLINE; | |
f65fe570 | 1077 | objfile = objfile::make (abfd, name, flags, parent); |
63524580 | 1078 | |
78a4a9b9 AC |
1079 | /* We either created a new mapped symbol table, mapped an existing |
1080 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1081 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1082 | if (should_print) |
c906108c | 1083 | { |
769d7dc4 AC |
1084 | if (deprecated_pre_add_symbol_hook) |
1085 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1086 | else |
6a831f06 PA |
1087 | printf_filtered (_("Reading symbols from %ps...\n"), |
1088 | styled_string (file_name_style.style (), name)); | |
c906108c | 1089 | } |
6bf667bb | 1090 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1091 | |
1092 | /* We now have at least a partial symbol table. Check to see if the | |
1093 | user requested that all symbols be read on initial access via either | |
1094 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1095 | all partial symbol tables for this objfile if so. */ |
c906108c | 1096 | |
9291a0cd | 1097 | if ((flags & OBJF_READNOW)) |
c906108c | 1098 | { |
b11896a5 | 1099 | if (should_print) |
6a831f06 PA |
1100 | printf_filtered (_("Expanding full symbols from %ps...\n"), |
1101 | styled_string (file_name_style.style (), name)); | |
c906108c | 1102 | |
ccefe4c4 TT |
1103 | if (objfile->sf) |
1104 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1105 | } |
1106 | ||
e79497a1 TT |
1107 | /* Note that we only print a message if we have no symbols and have |
1108 | no separate debug file. If there is a separate debug file which | |
1109 | does not have symbols, we'll have emitted this message for that | |
1110 | file, and so printing it twice is just redundant. */ | |
1111 | if (should_print && !objfile_has_symbols (objfile) | |
1112 | && objfile->separate_debug_objfile == nullptr) | |
6a831f06 PA |
1113 | printf_filtered (_("(No debugging symbols found in %ps)\n"), |
1114 | styled_string (file_name_style.style (), name)); | |
cb3c37b2 | 1115 | |
b11896a5 | 1116 | if (should_print) |
c906108c | 1117 | { |
769d7dc4 AC |
1118 | if (deprecated_post_add_symbol_hook) |
1119 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1120 | } |
1121 | ||
481d0f41 JB |
1122 | /* We print some messages regardless of whether 'from_tty || |
1123 | info_verbose' is true, so make sure they go out at the right | |
1124 | time. */ | |
1125 | gdb_flush (gdb_stdout); | |
1126 | ||
109f874e | 1127 | if (objfile->sf == NULL) |
8caee43b | 1128 | { |
76727919 | 1129 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1130 | return objfile; /* No symbols. */ |
8caee43b | 1131 | } |
109f874e | 1132 | |
e7d52ed3 | 1133 | finish_new_objfile (objfile, add_flags); |
c906108c | 1134 | |
76727919 | 1135 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1136 | |
ce7d4522 | 1137 | bfd_cache_close_all (); |
c906108c SS |
1138 | return (objfile); |
1139 | } | |
1140 | ||
24ba069a | 1141 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1142 | see the objfile constructor. */ |
9cce227f TG |
1143 | |
1144 | void | |
b15cc25c PA |
1145 | symbol_file_add_separate (bfd *bfd, const char *name, |
1146 | symfile_add_flags symfile_flags, | |
24ba069a | 1147 | struct objfile *objfile) |
9cce227f | 1148 | { |
089b4803 TG |
1149 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1150 | because sections of BFD may not match sections of OBJFILE and because | |
1151 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1152 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1153 | |
870f88f7 | 1154 | symbol_file_add_with_addrs |
37e136b1 | 1155 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1156 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
0c4311ab | 1157 | | OBJF_USERLOADED | OBJF_MAINLINE), |
63524580 | 1158 | objfile); |
9cce227f | 1159 | } |
7904e09f | 1160 | |
eb4556d7 JB |
1161 | /* Process the symbol file ABFD, as either the main file or as a |
1162 | dynamically loaded file. | |
6bf667bb | 1163 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1164 | |
eb4556d7 | 1165 | struct objfile * |
b15cc25c PA |
1166 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1167 | symfile_add_flags add_flags, | |
37e136b1 | 1168 | section_addr_info *addrs, |
dda83cd7 | 1169 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1170 | { |
24ba069a JK |
1171 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1172 | parent); | |
eb4556d7 JB |
1173 | } |
1174 | ||
7904e09f | 1175 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1176 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1177 | |
7904e09f | 1178 | struct objfile * |
b15cc25c | 1179 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1180 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1181 | { |
192b62ce | 1182 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1183 | |
192b62ce TT |
1184 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1185 | flags, NULL); | |
7904e09f JB |
1186 | } |
1187 | ||
d7db6da9 FN |
1188 | /* Call symbol_file_add() with default values and update whatever is |
1189 | affected by the loading of a new main(). | |
1190 | Used when the file is supplied in the gdb command line | |
1191 | and by some targets with special loading requirements. | |
1192 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1193 | argument for the switches that can only be specified in the symbol_file | |
1194 | command itself. */ | |
5417f6dc | 1195 | |
1adeb98a | 1196 | void |
ecf45d2c | 1197 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1198 | { |
d4d429d5 | 1199 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1200 | } |
1201 | ||
1202 | static void | |
ecf45d2c | 1203 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1204 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1205 | { |
ecf45d2c | 1206 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1207 | |
d4d429d5 PT |
1208 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1209 | if (reloff != 0) | |
1210 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1211 | |
d7db6da9 FN |
1212 | /* Getting new symbols may change our opinion about |
1213 | what is frameless. */ | |
1214 | reinit_frame_cache (); | |
1215 | ||
b15cc25c | 1216 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1217 | set_initial_language (); |
1adeb98a FN |
1218 | } |
1219 | ||
1220 | void | |
1221 | symbol_file_clear (int from_tty) | |
1222 | { | |
1223 | if ((have_full_symbols () || have_partial_symbols ()) | |
1224 | && from_tty | |
a42d7dd8 | 1225 | && (current_program_space->symfile_object_file |
0430b0d6 | 1226 | ? !query (_("Discard symbol table from `%s'? "), |
a42d7dd8 | 1227 | objfile_name (current_program_space->symfile_object_file)) |
0430b0d6 | 1228 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1229 | error (_("Not confirmed.")); |
1adeb98a | 1230 | |
0133421a JK |
1231 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1232 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1233 | no_shared_libraries (NULL, from_tty); |
1234 | ||
343cc952 | 1235 | current_program_space->free_all_objfiles (); |
0133421a | 1236 | |
f3c469b9 PA |
1237 | clear_symtab_users (0); |
1238 | ||
a42d7dd8 | 1239 | gdb_assert (current_program_space->symfile_object_file == NULL); |
d10c338d | 1240 | if (from_tty) |
22068491 | 1241 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1242 | } |
1243 | ||
c4dcb155 SM |
1244 | /* See symfile.h. */ |
1245 | ||
491144b5 | 1246 | bool separate_debug_file_debug = false; |
c4dcb155 | 1247 | |
5b5d99cf | 1248 | static int |
a8dbfd58 | 1249 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1250 | struct objfile *parent_objfile) |
5b5d99cf | 1251 | { |
904578ed JK |
1252 | unsigned long file_crc; |
1253 | int file_crc_p; | |
32a0e547 | 1254 | struct stat parent_stat, abfd_stat; |
904578ed | 1255 | int verified_as_different; |
32a0e547 JK |
1256 | |
1257 | /* Find a separate debug info file as if symbols would be present in | |
1258 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1259 | section can contain just the basename of PARENT_OBJFILE without any | |
1260 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1261 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1262 | |
a8dbfd58 | 1263 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1264 | return 0; |
5b5d99cf | 1265 | |
c4dcb155 | 1266 | if (separate_debug_file_debug) |
50794b45 SM |
1267 | { |
1268 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1269 | gdb_flush (gdb_stdout); | |
1270 | } | |
c4dcb155 | 1271 | |
ad80db5b | 1272 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget)); |
f1838a98 | 1273 | |
192b62ce | 1274 | if (abfd == NULL) |
50794b45 SM |
1275 | { |
1276 | if (separate_debug_file_debug) | |
1277 | printf_filtered (_(" no, unable to open.\n")); | |
1278 | ||
1279 | return 0; | |
1280 | } | |
5b5d99cf | 1281 | |
0ba1096a | 1282 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1283 | |
1284 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1285 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1286 | meaningful st_dev.) Files accessed from gdbservers that do not |
1287 | support the vFile:fstat packet will also have st_ino set to zero. | |
1288 | Do not indicate a duplicate library in either case. While there | |
1289 | is no guarantee that a system that provides meaningful inode | |
1290 | numbers will never set st_ino to zero, this is merely an | |
1291 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1292 | |
192b62ce | 1293 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1294 | && abfd_stat.st_ino != 0 |
1295 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1296 | { |
904578ed JK |
1297 | if (abfd_stat.st_dev == parent_stat.st_dev |
1298 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1299 | { |
1300 | if (separate_debug_file_debug) | |
1301 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1302 | ||
1303 | return 0; | |
1304 | } | |
904578ed | 1305 | verified_as_different = 1; |
32a0e547 | 1306 | } |
904578ed JK |
1307 | else |
1308 | verified_as_different = 0; | |
32a0e547 | 1309 | |
192b62ce | 1310 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1311 | |
904578ed | 1312 | if (!file_crc_p) |
50794b45 SM |
1313 | { |
1314 | if (separate_debug_file_debug) | |
1315 | printf_filtered (_(" no, error computing CRC.\n")); | |
1316 | ||
1317 | return 0; | |
1318 | } | |
904578ed | 1319 | |
287ccc17 JK |
1320 | if (crc != file_crc) |
1321 | { | |
dccee2de TT |
1322 | unsigned long parent_crc; |
1323 | ||
0a93529c GB |
1324 | /* If the files could not be verified as different with |
1325 | bfd_stat then we need to calculate the parent's CRC | |
1326 | to verify whether the files are different or not. */ | |
904578ed | 1327 | |
dccee2de | 1328 | if (!verified_as_different) |
904578ed | 1329 | { |
dccee2de | 1330 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1331 | { |
1332 | if (separate_debug_file_debug) | |
1333 | printf_filtered (_(" no, error computing CRC.\n")); | |
1334 | ||
1335 | return 0; | |
1336 | } | |
904578ed JK |
1337 | } |
1338 | ||
dccee2de | 1339 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1340 | warning (_("the debug information found in \"%s\"" |
1341 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1342 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1343 | |
50794b45 SM |
1344 | if (separate_debug_file_debug) |
1345 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1346 | ||
287ccc17 JK |
1347 | return 0; |
1348 | } | |
1349 | ||
50794b45 SM |
1350 | if (separate_debug_file_debug) |
1351 | printf_filtered (_(" yes!\n")); | |
1352 | ||
287ccc17 | 1353 | return 1; |
5b5d99cf JB |
1354 | } |
1355 | ||
aa28a74e | 1356 | char *debug_file_directory = NULL; |
920d2a44 AC |
1357 | static void |
1358 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1359 | struct cmd_list_element *c, const char *value) | |
1360 | { | |
3e43a32a MS |
1361 | fprintf_filtered (file, |
1362 | _("The directory where separate debug " | |
1363 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1364 | value); |
1365 | } | |
5b5d99cf JB |
1366 | |
1367 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1368 | #define DEBUG_SUBDIRECTORY ".debug" | |
1369 | #endif | |
1370 | ||
1db33378 PP |
1371 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1372 | where the original file resides (may not be the same as | |
1373 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1374 | looking for. CANON_DIR is the "realpath" form of DIR. |
1375 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1376 | Returns the path of the file with separate debug info, or an empty |
1377 | string. */ | |
1db33378 | 1378 | |
a8dbfd58 | 1379 | static std::string |
1db33378 PP |
1380 | find_separate_debug_file (const char *dir, |
1381 | const char *canon_dir, | |
1382 | const char *debuglink, | |
1383 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1384 | { |
c4dcb155 | 1385 | if (separate_debug_file_debug) |
22068491 TT |
1386 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1387 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1388 | |
5b5d99cf | 1389 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1390 | std::string debugfile = dir; |
1391 | debugfile += debuglink; | |
5b5d99cf | 1392 | |
32a0e547 | 1393 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1394 | return debugfile; |
5417f6dc | 1395 | |
5b5d99cf | 1396 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1397 | debugfile = dir; |
1398 | debugfile += DEBUG_SUBDIRECTORY; | |
1399 | debugfile += "/"; | |
1400 | debugfile += debuglink; | |
5b5d99cf | 1401 | |
32a0e547 | 1402 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1403 | return debugfile; |
5417f6dc | 1404 | |
24ddea62 | 1405 | /* Then try in the global debugfile directories. |
f888f159 | 1406 | |
24ddea62 JK |
1407 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1408 | cause "/..." lookups. */ | |
5417f6dc | 1409 | |
5d36dfb9 AU |
1410 | bool target_prefix = startswith (dir, "target:"); |
1411 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1412 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1413 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
f62318e9 | 1414 | gdb::unique_xmalloc_ptr<char> canon_sysroot = gdb_realpath (gdb_sysroot); |
24ddea62 | 1415 | |
5f2459c2 EZ |
1416 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1417 | convert the drive letter into a one-letter directory, so that the | |
1418 | file name resulting from splicing below will be valid. | |
1419 | ||
1420 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1421 | There are various remote-debugging scenarios where such a | |
1422 | transformation of the drive letter might be required when GDB runs | |
1423 | on a Posix host, see | |
1424 | ||
1425 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1426 | ||
85102364 | 1427 | If some of those scenarios need to be supported, we will need to |
5f2459c2 EZ |
1428 | use a different condition for HAS_DRIVE_SPEC and a different macro |
1429 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1430 | std::string drive; | |
1431 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1432 | { | |
1433 | drive = dir_notarget[0]; | |
1434 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1435 | } | |
1436 | ||
e80aaf61 | 1437 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1438 | { |
5d36dfb9 AU |
1439 | debugfile = target_prefix ? "target:" : ""; |
1440 | debugfile += debugdir.get (); | |
a8dbfd58 | 1441 | debugfile += "/"; |
5f2459c2 | 1442 | debugfile += drive; |
5d36dfb9 | 1443 | debugfile += dir_notarget; |
a8dbfd58 | 1444 | debugfile += debuglink; |
aa28a74e | 1445 | |
32a0e547 | 1446 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1447 | return debugfile; |
24ddea62 | 1448 | |
f62318e9 JB |
1449 | const char *base_path = NULL; |
1450 | if (canon_dir != NULL) | |
1451 | { | |
1452 | if (canon_sysroot.get () != NULL) | |
1453 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1454 | else | |
1455 | base_path = child_path (gdb_sysroot, canon_dir); | |
1456 | } | |
1457 | if (base_path != NULL) | |
24ddea62 | 1458 | { |
402d2bfe JB |
1459 | /* If the file is in the sysroot, try using its base path in |
1460 | the global debugfile directory. */ | |
5d36dfb9 AU |
1461 | debugfile = target_prefix ? "target:" : ""; |
1462 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1463 | debugfile += "/"; |
1464 | debugfile += base_path; | |
a8dbfd58 SM |
1465 | debugfile += "/"; |
1466 | debugfile += debuglink; | |
24ddea62 | 1467 | |
402d2bfe JB |
1468 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1469 | return debugfile; | |
1470 | ||
1471 | /* If the file is in the sysroot, try using its base path in | |
1472 | the sysroot's global debugfile directory. */ | |
1473 | debugfile = target_prefix ? "target:" : ""; | |
1474 | debugfile += gdb_sysroot; | |
1475 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1476 | debugfile += "/"; |
1477 | debugfile += base_path; | |
402d2bfe JB |
1478 | debugfile += "/"; |
1479 | debugfile += debuglink; | |
1480 | ||
32a0e547 | 1481 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1482 | return debugfile; |
24ddea62 | 1483 | } |
402d2bfe | 1484 | |
aa28a74e | 1485 | } |
f888f159 | 1486 | |
a8dbfd58 | 1487 | return std::string (); |
1db33378 PP |
1488 | } |
1489 | ||
7edbb660 | 1490 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1491 | If there were no directory separators in PATH, PATH will be empty |
1492 | string on return. */ | |
1493 | ||
1494 | static void | |
1495 | terminate_after_last_dir_separator (char *path) | |
1496 | { | |
1497 | int i; | |
1498 | ||
1499 | /* Strip off the final filename part, leaving the directory name, | |
1500 | followed by a slash. The directory can be relative or absolute. */ | |
1501 | for (i = strlen(path) - 1; i >= 0; i--) | |
1502 | if (IS_DIR_SEPARATOR (path[i])) | |
1503 | break; | |
1504 | ||
1505 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1506 | path[i + 1] = '\0'; | |
1507 | } | |
1508 | ||
1509 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1510 | Returns pathname, or an empty string. */ |
1db33378 | 1511 | |
a8dbfd58 | 1512 | std::string |
1db33378 PP |
1513 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1514 | { | |
1db33378 | 1515 | unsigned long crc32; |
1db33378 | 1516 | |
5eae7aea TT |
1517 | gdb::unique_xmalloc_ptr<char> debuglink |
1518 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1519 | |
1520 | if (debuglink == NULL) | |
1521 | { | |
1522 | /* There's no separate debug info, hence there's no way we could | |
1523 | load it => no warning. */ | |
a8dbfd58 | 1524 | return std::string (); |
1db33378 PP |
1525 | } |
1526 | ||
5eae7aea TT |
1527 | std::string dir = objfile_name (objfile); |
1528 | terminate_after_last_dir_separator (&dir[0]); | |
1529 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1530 | |
a8dbfd58 SM |
1531 | std::string debugfile |
1532 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1533 | debuglink.get (), crc32, objfile); | |
1db33378 | 1534 | |
a8dbfd58 | 1535 | if (debugfile.empty ()) |
1db33378 | 1536 | { |
1db33378 PP |
1537 | /* For PR gdb/9538, try again with realpath (if different from the |
1538 | original). */ | |
1539 | ||
1540 | struct stat st_buf; | |
1541 | ||
4262abfb JK |
1542 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1543 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1544 | { |
5eae7aea TT |
1545 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1546 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1547 | if (symlink_dir != NULL) |
1548 | { | |
5eae7aea TT |
1549 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1550 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1551 | { |
1552 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1553 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1554 | symlink_dir.get (), | |
1555 | debuglink.get (), | |
1db33378 PP |
1556 | crc32, |
1557 | objfile); | |
1558 | } | |
1559 | } | |
1560 | } | |
1db33378 | 1561 | } |
aa28a74e | 1562 | |
25522fae | 1563 | return debugfile; |
5b5d99cf JB |
1564 | } |
1565 | ||
97cbe998 SDJ |
1566 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1567 | simultaneously. */ | |
1568 | ||
1569 | static void | |
1570 | validate_readnow_readnever (objfile_flags flags) | |
1571 | { | |
1572 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1573 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1574 | } | |
1575 | ||
c906108c SS |
1576 | /* This is the symbol-file command. Read the file, analyze its |
1577 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1578 | the command is rather bizarre: |
1579 | ||
1580 | 1. The function buildargv implements various quoting conventions | |
1581 | which are undocumented and have little or nothing in common with | |
1582 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1583 | ||
1584 | 2. Options are used, which are not generally used in GDB (perhaps | |
1585 | "set mapped on", "set readnow on" would be better) | |
1586 | ||
1587 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1588 | conventions (because it is confusing and inconvenient). */ |
1589 | ||
1590 | void | |
1d8b34a7 | 1591 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1592 | { |
c906108c SS |
1593 | dont_repeat (); |
1594 | ||
1595 | if (args == NULL) | |
1596 | { | |
1adeb98a | 1597 | symbol_file_clear (from_tty); |
c906108c SS |
1598 | } |
1599 | else | |
1600 | { | |
b15cc25c | 1601 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1602 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1603 | char *name = NULL; |
40fc416f | 1604 | bool stop_processing_options = false; |
d4d429d5 | 1605 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1606 | int idx; |
1607 | char *arg; | |
cb2f3a29 | 1608 | |
ecf45d2c SL |
1609 | if (from_tty) |
1610 | add_flags |= SYMFILE_VERBOSE; | |
1611 | ||
773a1edc | 1612 | gdb_argv built_argv (args); |
40fc416f | 1613 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1614 | { |
40fc416f | 1615 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1616 | { |
40fc416f SDJ |
1617 | if (name == NULL) |
1618 | name = arg; | |
1619 | else | |
1620 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1621 | } |
40fc416f SDJ |
1622 | else if (strcmp (arg, "-readnow") == 0) |
1623 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1624 | else if (strcmp (arg, "-readnever") == 0) |
1625 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1626 | else if (strcmp (arg, "-o") == 0) |
1627 | { | |
1628 | arg = built_argv[++idx]; | |
1629 | if (arg == NULL) | |
1630 | error (_("Missing argument to -o")); | |
1631 | ||
1632 | offset = parse_and_eval_address (arg); | |
1633 | } | |
40fc416f SDJ |
1634 | else if (strcmp (arg, "--") == 0) |
1635 | stop_processing_options = true; | |
1636 | else | |
1637 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1638 | } |
1639 | ||
1640 | if (name == NULL) | |
cb2f3a29 | 1641 | error (_("no symbol file name was specified")); |
40fc416f | 1642 | |
97cbe998 SDJ |
1643 | validate_readnow_readnever (flags); |
1644 | ||
ea142fbf AH |
1645 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1646 | (Position Independent Executable) main symbol file will only be | |
1647 | computed by the solib_create_inferior_hook below. Without it, | |
1648 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1649 | displacement. */ | |
1650 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1651 | ||
d4d429d5 | 1652 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1653 | |
1654 | solib_create_inferior_hook (from_tty); | |
1655 | ||
1656 | /* Now it's safe to re-add the breakpoints. */ | |
1657 | breakpoint_re_set (); | |
c906108c SS |
1658 | } |
1659 | } | |
1660 | ||
d3214198 | 1661 | /* Set the initial language. */ |
c906108c | 1662 | |
8b60591b | 1663 | void |
fba45db2 | 1664 | set_initial_language (void) |
c906108c | 1665 | { |
0dce4280 TV |
1666 | if (language_mode == language_mode_manual) |
1667 | return; | |
9e6c82ad | 1668 | enum language lang = main_language (); |
658dadf0 TV |
1669 | /* Make C the default language. */ |
1670 | enum language default_lang = language_c; | |
c906108c | 1671 | |
9e6c82ad | 1672 | if (lang == language_unknown) |
01f8c46d | 1673 | { |
cd215b2e | 1674 | const char *name = main_name (); |
658dadf0 TV |
1675 | struct symbol *sym |
1676 | = lookup_symbol_in_language (name, NULL, VAR_DOMAIN, default_lang, | |
1677 | NULL).symbol; | |
f888f159 | 1678 | |
bf6d8a91 | 1679 | if (sym != NULL) |
c1b5c1eb | 1680 | lang = sym->language (); |
01f8c46d | 1681 | } |
cb2f3a29 | 1682 | |
ccefe4c4 TT |
1683 | if (lang == language_unknown) |
1684 | { | |
658dadf0 | 1685 | lang = default_lang; |
c906108c | 1686 | } |
ccefe4c4 TT |
1687 | |
1688 | set_language (lang); | |
1689 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1690 | } |
1691 | ||
cb2f3a29 MK |
1692 | /* Open the file specified by NAME and hand it off to BFD for |
1693 | preliminary analysis. Return a newly initialized bfd *, which | |
1694 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1695 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1696 | |
192b62ce | 1697 | gdb_bfd_ref_ptr |
97a41605 | 1698 | symfile_bfd_open (const char *name) |
c906108c | 1699 | { |
97a41605 | 1700 | int desc = -1; |
c906108c | 1701 | |
e0cc99a6 | 1702 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1703 | if (!is_target_filename (name)) |
f1838a98 | 1704 | { |
ee0c3293 | 1705 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1706 | |
97a41605 GB |
1707 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1708 | desc = openp (getenv ("PATH"), | |
1709 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1710 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1711 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1712 | if (desc < 0) |
1713 | { | |
ee0c3293 | 1714 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1715 | |
ee0c3293 | 1716 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1717 | desc = openp (getenv ("PATH"), |
1718 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1719 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1720 | } | |
c906108c | 1721 | #endif |
97a41605 | 1722 | if (desc < 0) |
ee0c3293 | 1723 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1724 | |
e0cc99a6 | 1725 | name = absolute_name.get (); |
97a41605 | 1726 | } |
c906108c | 1727 | |
192b62ce TT |
1728 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1729 | if (sym_bfd == NULL) | |
faab9922 JK |
1730 | error (_("`%s': can't open to read symbols: %s."), name, |
1731 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1732 | |
192b62ce TT |
1733 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1734 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1735 | |
192b62ce TT |
1736 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1737 | error (_("`%s': can't read symbols: %s."), name, | |
1738 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1739 | |
1740 | return sym_bfd; | |
c906108c SS |
1741 | } |
1742 | ||
cb2f3a29 MK |
1743 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1744 | the section was not found. */ | |
1745 | ||
0e931cf0 | 1746 | int |
a121b7c1 | 1747 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1748 | { |
1749 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1750 | |
0e931cf0 JB |
1751 | if (sect) |
1752 | return sect->index; | |
1753 | else | |
1754 | return -1; | |
1755 | } | |
1756 | ||
c256e171 DE |
1757 | /* Link SF into the global symtab_fns list. |
1758 | FLAVOUR is the file format that SF handles. | |
1759 | Called on startup by the _initialize routine in each object file format | |
1760 | reader, to register information about each format the reader is prepared | |
1761 | to handle. */ | |
c906108c SS |
1762 | |
1763 | void | |
c256e171 | 1764 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1765 | { |
905014d7 | 1766 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1767 | } |
1768 | ||
cb2f3a29 MK |
1769 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1770 | either returns or calls error(). The result is an initialized | |
1771 | struct sym_fns in the objfile structure, that contains cached | |
1772 | information about the symbol file. */ | |
c906108c | 1773 | |
00b5771c | 1774 | static const struct sym_fns * |
31d99776 | 1775 | find_sym_fns (bfd *abfd) |
c906108c | 1776 | { |
31d99776 | 1777 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1778 | |
75245b24 MS |
1779 | if (our_flavour == bfd_target_srec_flavour |
1780 | || our_flavour == bfd_target_ihex_flavour | |
1781 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1782 | return NULL; /* No symbols. */ |
75245b24 | 1783 | |
905014d7 SM |
1784 | for (const registered_sym_fns &rsf : symtab_fns) |
1785 | if (our_flavour == rsf.sym_flavour) | |
1786 | return rsf.sym_fns; | |
cb2f3a29 | 1787 | |
8a3fe4f8 | 1788 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1789 | bfd_get_target (abfd)); |
c906108c SS |
1790 | } |
1791 | \f | |
cb2f3a29 | 1792 | |
c906108c SS |
1793 | /* This function runs the load command of our current target. */ |
1794 | ||
1795 | static void | |
5fed81ff | 1796 | load_command (const char *arg, int from_tty) |
c906108c | 1797 | { |
e5cc9f32 JB |
1798 | dont_repeat (); |
1799 | ||
4487aabf PA |
1800 | /* The user might be reloading because the binary has changed. Take |
1801 | this opportunity to check. */ | |
1802 | reopen_exec_file (); | |
1803 | reread_symbols (); | |
1804 | ||
b577b6af | 1805 | std::string temp; |
c906108c | 1806 | if (arg == NULL) |
1986bccd | 1807 | { |
b577b6af | 1808 | const char *parg, *prev; |
1986bccd | 1809 | |
b577b6af | 1810 | arg = get_exec_file (1); |
1986bccd | 1811 | |
b577b6af TT |
1812 | /* We may need to quote this string so buildargv can pull it |
1813 | apart. */ | |
1814 | prev = parg = arg; | |
1986bccd AS |
1815 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1816 | { | |
b577b6af TT |
1817 | temp.append (prev, parg - prev); |
1818 | prev = parg++; | |
1819 | temp.push_back ('\\'); | |
1986bccd | 1820 | } |
b577b6af TT |
1821 | /* If we have not copied anything yet, then we didn't see a |
1822 | character to quote, and we can just leave ARG unchanged. */ | |
1823 | if (!temp.empty ()) | |
1986bccd | 1824 | { |
b577b6af TT |
1825 | temp.append (prev); |
1826 | arg = temp.c_str (); | |
1986bccd AS |
1827 | } |
1828 | } | |
1829 | ||
c906108c | 1830 | target_load (arg, from_tty); |
2889e661 JB |
1831 | |
1832 | /* After re-loading the executable, we don't really know which | |
1833 | overlays are mapped any more. */ | |
1834 | overlay_cache_invalid = 1; | |
c906108c SS |
1835 | } |
1836 | ||
1837 | /* This version of "load" should be usable for any target. Currently | |
1838 | it is just used for remote targets, not inftarg.c or core files, | |
1839 | on the theory that only in that case is it useful. | |
1840 | ||
1841 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1842 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1843 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1844 | performance compares. */ | |
917317f4 | 1845 | |
917317f4 JM |
1846 | static int validate_download = 0; |
1847 | ||
a76d924d | 1848 | /* Opaque data for load_progress. */ |
55089490 TT |
1849 | struct load_progress_data |
1850 | { | |
a76d924d | 1851 | /* Cumulative data. */ |
55089490 TT |
1852 | unsigned long write_count = 0; |
1853 | unsigned long data_count = 0; | |
1854 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1855 | }; |
1856 | ||
1857 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1858 | struct load_progress_section_data |
1859 | { | |
1860 | load_progress_section_data (load_progress_data *cumulative_, | |
1861 | const char *section_name_, ULONGEST section_size_, | |
1862 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1863 | : cumulative (cumulative_), section_name (section_name_), | |
1864 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1865 | {} | |
1866 | ||
a76d924d | 1867 | struct load_progress_data *cumulative; |
cf7a04e8 | 1868 | |
a76d924d | 1869 | /* Per-section data. */ |
cf7a04e8 | 1870 | const char *section_name; |
55089490 | 1871 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1872 | ULONGEST section_size; |
1873 | CORE_ADDR lma; | |
1874 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1875 | }; |
1876 | ||
55089490 TT |
1877 | /* Opaque data for load_section_callback. */ |
1878 | struct load_section_data | |
1879 | { | |
1880 | load_section_data (load_progress_data *progress_data_) | |
1881 | : progress_data (progress_data_) | |
1882 | {} | |
1883 | ||
1884 | ~load_section_data () | |
1885 | { | |
1886 | for (auto &&request : requests) | |
1887 | { | |
1888 | xfree (request.data); | |
1889 | delete ((load_progress_section_data *) request.baton); | |
1890 | } | |
1891 | } | |
1892 | ||
1893 | CORE_ADDR load_offset = 0; | |
1894 | struct load_progress_data *progress_data; | |
1895 | std::vector<struct memory_write_request> requests; | |
1896 | }; | |
1897 | ||
a76d924d | 1898 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1899 | |
1900 | static void | |
1901 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1902 | { | |
19ba03f4 SM |
1903 | struct load_progress_section_data *args |
1904 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1905 | struct load_progress_data *totals; |
1906 | ||
1907 | if (args == NULL) | |
1908 | /* Writing padding data. No easy way to get at the cumulative | |
1909 | stats, so just ignore this. */ | |
1910 | return; | |
1911 | ||
1912 | totals = args->cumulative; | |
1913 | ||
1914 | if (bytes == 0 && args->section_sent == 0) | |
1915 | { | |
1916 | /* The write is just starting. Let the user know we've started | |
1917 | this section. */ | |
112e8700 SM |
1918 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1919 | args->section_name, | |
1920 | hex_string (args->section_size), | |
1921 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1922 | return; |
1923 | } | |
cf7a04e8 DJ |
1924 | |
1925 | if (validate_download) | |
1926 | { | |
1927 | /* Broken memories and broken monitors manifest themselves here | |
1928 | when bring new computers to life. This doubles already slow | |
1929 | downloads. */ | |
1930 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1931 | might add a verify_memory() method to the target vector and | |
1932 | then use that. remote.c could implement that method using | |
1933 | the ``qCRC'' packet. */ | |
0efef640 | 1934 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1935 | |
0efef640 | 1936 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1937 | error (_("Download verify read failed at %s"), |
f5656ead | 1938 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1939 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1940 | error (_("Download verify compare failed at %s"), |
f5656ead | 1941 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1942 | } |
a76d924d | 1943 | totals->data_count += bytes; |
cf7a04e8 DJ |
1944 | args->lma += bytes; |
1945 | args->buffer += bytes; | |
a76d924d | 1946 | totals->write_count += 1; |
cf7a04e8 | 1947 | args->section_sent += bytes; |
522002f9 | 1948 | if (check_quit_flag () |
cf7a04e8 DJ |
1949 | || (deprecated_ui_load_progress_hook != NULL |
1950 | && deprecated_ui_load_progress_hook (args->section_name, | |
1951 | args->section_sent))) | |
1952 | error (_("Canceled the download")); | |
1953 | ||
1954 | if (deprecated_show_load_progress != NULL) | |
1955 | deprecated_show_load_progress (args->section_name, | |
1956 | args->section_sent, | |
1957 | args->section_size, | |
a76d924d DJ |
1958 | totals->data_count, |
1959 | totals->total_size); | |
cf7a04e8 DJ |
1960 | } |
1961 | ||
5486c517 | 1962 | /* Service function for generic_load. */ |
e4f9b4d5 MS |
1963 | |
1964 | static void | |
5486c517 TT |
1965 | load_one_section (bfd *abfd, asection *asec, |
1966 | struct load_section_data *args) | |
e4f9b4d5 | 1967 | { |
fd361982 AM |
1968 | bfd_size_type size = bfd_section_size (asec); |
1969 | const char *sect_name = bfd_section_name (asec); | |
e4f9b4d5 | 1970 | |
fd361982 | 1971 | if ((bfd_section_flags (asec) & SEC_LOAD) == 0) |
cf7a04e8 | 1972 | return; |
e4f9b4d5 | 1973 | |
cf7a04e8 DJ |
1974 | if (size == 0) |
1975 | return; | |
e4f9b4d5 | 1976 | |
fd361982 | 1977 | ULONGEST begin = bfd_section_lma (asec) + args->load_offset; |
55089490 TT |
1978 | ULONGEST end = begin + size; |
1979 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1980 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1981 | |
55089490 TT |
1982 | load_progress_section_data *section_data |
1983 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1984 | begin, buffer); | |
cf7a04e8 | 1985 | |
55089490 | 1986 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1987 | } |
1988 | ||
dcb07cfa PA |
1989 | static void print_transfer_performance (struct ui_file *stream, |
1990 | unsigned long data_count, | |
1991 | unsigned long write_count, | |
dda83cd7 | 1992 | std::chrono::steady_clock::duration d); |
dcb07cfa | 1993 | |
854f6088 SM |
1994 | /* See symfile.h. */ |
1995 | ||
c906108c | 1996 | void |
9cbe5fff | 1997 | generic_load (const char *args, int from_tty) |
c906108c | 1998 | { |
a76d924d | 1999 | struct load_progress_data total_progress; |
55089490 | 2000 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2001 | struct ui_out *uiout = current_uiout; |
a76d924d | 2002 | |
d1a41061 PP |
2003 | if (args == NULL) |
2004 | error_no_arg (_("file to load")); | |
1986bccd | 2005 | |
773a1edc | 2006 | gdb_argv argv (args); |
1986bccd | 2007 | |
ee0c3293 | 2008 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2009 | |
2010 | if (argv[1] != NULL) | |
917317f4 | 2011 | { |
f698ca8e | 2012 | const char *endptr; |
ba5f2f8a | 2013 | |
f698ca8e | 2014 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2015 | |
2016 | /* If the last word was not a valid number then | |
dda83cd7 | 2017 | treat it as a file name with spaces in. */ |
1986bccd | 2018 | if (argv[1] == endptr) |
dda83cd7 | 2019 | error (_("Invalid download offset:%s."), argv[1]); |
1986bccd AS |
2020 | |
2021 | if (argv[2] != NULL) | |
2022 | error (_("Too many parameters.")); | |
917317f4 | 2023 | } |
c906108c | 2024 | |
c378eb4e | 2025 | /* Open the file for loading. */ |
ad80db5b | 2026 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget)); |
c906108c | 2027 | if (loadfile_bfd == NULL) |
ee0c3293 | 2028 | perror_with_name (filename.get ()); |
917317f4 | 2029 | |
192b62ce | 2030 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2031 | { |
ee0c3293 | 2032 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2033 | bfd_errmsg (bfd_get_error ())); |
2034 | } | |
c5aa993b | 2035 | |
5486c517 TT |
2036 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2037 | total_progress.total_size += bfd_section_size (asec); | |
a76d924d | 2038 | |
5486c517 TT |
2039 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2040 | load_one_section (loadfile_bfd.get (), asec, &cbdata); | |
c2d11a7d | 2041 | |
dcb07cfa PA |
2042 | using namespace std::chrono; |
2043 | ||
2044 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2045 | |
a76d924d DJ |
2046 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2047 | load_progress) != 0) | |
2048 | error (_("Load failed")); | |
c906108c | 2049 | |
dcb07cfa | 2050 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2051 | |
55089490 | 2052 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2053 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2054 | uiout->text ("Start address "); |
ca8d69be | 2055 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2056 | uiout->text (", load size "); |
1f77b012 | 2057 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2058 | uiout->text ("\n"); |
fb14de7b | 2059 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2060 | |
38963c97 DJ |
2061 | /* Reset breakpoints, now that we have changed the load image. For |
2062 | instance, breakpoints may have been set (or reset, by | |
2063 | post_create_inferior) while connected to the target but before we | |
2064 | loaded the program. In that case, the prologue analyzer could | |
2065 | have read instructions from the target to find the right | |
2066 | breakpoint locations. Loading has changed the contents of that | |
2067 | memory. */ | |
2068 | ||
2069 | breakpoint_re_set (); | |
2070 | ||
a76d924d DJ |
2071 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2072 | total_progress.write_count, | |
dcb07cfa | 2073 | end_time - start_time); |
c906108c SS |
2074 | } |
2075 | ||
dcb07cfa PA |
2076 | /* Report on STREAM the performance of a memory transfer operation, |
2077 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2078 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2079 | that information is not available. TIME is how long the operation | |
2080 | lasted. */ | |
c906108c | 2081 | |
dcb07cfa | 2082 | static void |
d9fcf2fb | 2083 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2084 | unsigned long data_count, |
2085 | unsigned long write_count, | |
dcb07cfa | 2086 | std::chrono::steady_clock::duration time) |
917317f4 | 2087 | { |
dcb07cfa | 2088 | using namespace std::chrono; |
79a45e25 | 2089 | struct ui_out *uiout = current_uiout; |
2b71414d | 2090 | |
dcb07cfa | 2091 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2092 | |
112e8700 | 2093 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2094 | if (ms.count () > 0) |
8b93c638 | 2095 | { |
dcb07cfa | 2096 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2097 | |
112e8700 | 2098 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2099 | { |
1f77b012 | 2100 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2101 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2102 | } |
2103 | else if (rate < 1024) | |
2104 | { | |
1f77b012 | 2105 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2106 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2107 | } |
2108 | else | |
2109 | { | |
1f77b012 | 2110 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2111 | uiout->text (" KB/sec"); |
9f43d28c | 2112 | } |
8b93c638 JM |
2113 | } |
2114 | else | |
2115 | { | |
1f77b012 | 2116 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2117 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2118 | } |
2119 | if (write_count > 0) | |
2120 | { | |
112e8700 | 2121 | uiout->text (", "); |
1f77b012 | 2122 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2123 | uiout->text (" bytes/write"); |
8b93c638 | 2124 | } |
112e8700 | 2125 | uiout->text (".\n"); |
c906108c SS |
2126 | } |
2127 | ||
291f9a96 PT |
2128 | /* Add an OFFSET to the start address of each section in OBJF, except |
2129 | sections that were specified in ADDRS. */ | |
2130 | ||
2131 | static void | |
2132 | set_objfile_default_section_offset (struct objfile *objf, | |
2133 | const section_addr_info &addrs, | |
2134 | CORE_ADDR offset) | |
2135 | { | |
2136 | /* Add OFFSET to all sections by default. */ | |
6a053cb1 | 2137 | section_offsets offsets (objf->section_offsets.size (), offset); |
291f9a96 PT |
2138 | |
2139 | /* Create sorted lists of all sections in ADDRS as well as all | |
2140 | sections in OBJF. */ | |
2141 | ||
2142 | std::vector<const struct other_sections *> addrs_sorted | |
2143 | = addrs_section_sort (addrs); | |
2144 | ||
2145 | section_addr_info objf_addrs | |
2146 | = build_section_addr_info_from_objfile (objf); | |
2147 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2148 | = addrs_section_sort (objf_addrs); | |
2149 | ||
2150 | /* Walk the BFD section list, and if a matching section is found in | |
2151 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2152 | unchanged. | |
2153 | ||
2154 | Note that both lists may contain multiple sections with the same | |
2155 | name, and then the sections from ADDRS are matched in BFD order | |
2156 | (thanks to sectindex). */ | |
2157 | ||
2158 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2159 | = addrs_sorted.begin (); | |
ff27d073 | 2160 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2161 | { |
2162 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2163 | int cmp = -1; | |
2164 | ||
2165 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2166 | { | |
2167 | const struct other_sections *sect = *addrs_sorted_iter; | |
2168 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2169 | cmp = strcmp (sect_name, objf_name); | |
2170 | if (cmp <= 0) | |
2171 | ++addrs_sorted_iter; | |
2172 | } | |
2173 | ||
2174 | if (cmp == 0) | |
6a053cb1 | 2175 | offsets[objf_sect->sectindex] = 0; |
291f9a96 PT |
2176 | } |
2177 | ||
2178 | /* Apply the new section offsets. */ | |
6a053cb1 | 2179 | objfile_relocate (objf, offsets); |
291f9a96 PT |
2180 | } |
2181 | ||
c906108c SS |
2182 | /* This function allows the addition of incrementally linked object files. |
2183 | It does not modify any state in the target, only in the debugger. */ | |
2184 | ||
c906108c | 2185 | static void |
2cf311eb | 2186 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2187 | { |
5af949e3 | 2188 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2189 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2190 | char *arg; |
2acceee2 | 2191 | int argcnt = 0; |
76ad5e1e | 2192 | struct objfile *objf; |
b15cc25c PA |
2193 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2194 | symfile_add_flags add_flags = 0; | |
2195 | ||
2196 | if (from_tty) | |
2197 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2198 | |
a39a16c4 | 2199 | struct sect_opt |
2acceee2 | 2200 | { |
a121b7c1 PA |
2201 | const char *name; |
2202 | const char *value; | |
a39a16c4 | 2203 | }; |
db162d44 | 2204 | |
40fc416f SDJ |
2205 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2206 | bool stop_processing_options = false; | |
291f9a96 | 2207 | CORE_ADDR offset = 0; |
c5aa993b | 2208 | |
c906108c SS |
2209 | dont_repeat (); |
2210 | ||
2211 | if (args == NULL) | |
8a3fe4f8 | 2212 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2213 | |
40fc416f | 2214 | bool seen_addr = false; |
291f9a96 | 2215 | bool seen_offset = false; |
773a1edc | 2216 | gdb_argv argv (args); |
db162d44 | 2217 | |
5b96932b AS |
2218 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2219 | { | |
40fc416f | 2220 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2221 | { |
40fc416f | 2222 | if (filename == NULL) |
41dc8db8 | 2223 | { |
40fc416f SDJ |
2224 | /* First non-option argument is always the filename. */ |
2225 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2226 | } |
40fc416f | 2227 | else if (!seen_addr) |
41dc8db8 | 2228 | { |
40fc416f SDJ |
2229 | /* The second non-option argument is always the text |
2230 | address at which to load the program. */ | |
2231 | sect_opts[0].value = arg; | |
2232 | seen_addr = true; | |
41dc8db8 MB |
2233 | } |
2234 | else | |
02ca603a | 2235 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2236 | } |
40fc416f SDJ |
2237 | else if (strcmp (arg, "-readnow") == 0) |
2238 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2239 | else if (strcmp (arg, "-readnever") == 0) |
2240 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2241 | else if (strcmp (arg, "-s") == 0) |
2242 | { | |
2243 | if (argv[argcnt + 1] == NULL) | |
2244 | error (_("Missing section name after \"-s\"")); | |
2245 | else if (argv[argcnt + 2] == NULL) | |
2246 | error (_("Missing section address after \"-s\"")); | |
2247 | ||
2248 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2249 | ||
2250 | sect_opts.push_back (sect); | |
2251 | argcnt += 2; | |
2252 | } | |
291f9a96 PT |
2253 | else if (strcmp (arg, "-o") == 0) |
2254 | { | |
2255 | arg = argv[++argcnt]; | |
2256 | if (arg == NULL) | |
2257 | error (_("Missing argument to -o")); | |
2258 | ||
2259 | offset = parse_and_eval_address (arg); | |
2260 | seen_offset = true; | |
2261 | } | |
40fc416f SDJ |
2262 | else if (strcmp (arg, "--") == 0) |
2263 | stop_processing_options = true; | |
2264 | else | |
2265 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2266 | } |
c906108c | 2267 | |
40fc416f SDJ |
2268 | if (filename == NULL) |
2269 | error (_("You must provide a filename to be loaded.")); | |
2270 | ||
97cbe998 SDJ |
2271 | validate_readnow_readnever (flags); |
2272 | ||
c378eb4e | 2273 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2274 | a sect_addr_info structure to be passed around to other |
2275 | functions. We have to split this up into separate print | |
bb599908 | 2276 | statements because hex_string returns a local static |
c378eb4e | 2277 | string. */ |
5417f6dc | 2278 | |
ed6dfe51 | 2279 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2280 | filename.get ()); |
37e136b1 | 2281 | section_addr_info section_addrs; |
ed6dfe51 PT |
2282 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2283 | if (!seen_addr) | |
2284 | ++it; | |
2285 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2286 | { |
db162d44 | 2287 | CORE_ADDR addr; |
ed6dfe51 PT |
2288 | const char *val = it->value; |
2289 | const char *sec = it->name; | |
5417f6dc | 2290 | |
ed6dfe51 PT |
2291 | if (section_addrs.empty ()) |
2292 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2293 | addr = parse_and_eval_address (val); |
db162d44 | 2294 | |
db162d44 | 2295 | /* Here we store the section offsets in the order they were |
dda83cd7 SM |
2296 | entered on the command line. Every array element is |
2297 | assigned an ascending section index to preserve the above | |
2298 | order over an unstable sorting algorithm. This dummy | |
2299 | index is not used for any other purpose. | |
d81a3eaf PT |
2300 | */ |
2301 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2302 | printf_filtered ("\t%s_addr = %s\n", sec, |
2303 | paddress (gdbarch, addr)); | |
db162d44 | 2304 | |
5417f6dc | 2305 | /* The object's sections are initialized when a |
db162d44 | 2306 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2307 | This happens in reread_symbols. |
db162d44 EZ |
2308 | At this point, we don't know what file type this is, |
2309 | so we can't determine what section names are valid. */ | |
2acceee2 | 2310 | } |
291f9a96 PT |
2311 | if (seen_offset) |
2312 | printf_unfiltered (_("%s offset by %s\n"), | |
2313 | (section_addrs.empty () | |
2314 | ? _(" with all sections") | |
2315 | : _("with other sections")), | |
2316 | paddress (gdbarch, offset)); | |
2317 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2318 | printf_unfiltered ("\n"); |
db162d44 | 2319 | |
2acceee2 | 2320 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2321 | error (_("Not confirmed.")); |
c906108c | 2322 | |
37e136b1 TT |
2323 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2324 | flags); | |
f5686554 TT |
2325 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2326 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2327 | filename.get ()); | |
76ad5e1e | 2328 | |
291f9a96 PT |
2329 | if (seen_offset) |
2330 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2331 | ||
d9eebde0 | 2332 | current_program_space->add_target_sections (objf); |
c906108c SS |
2333 | |
2334 | /* Getting new symbols may change our opinion about what is | |
2335 | frameless. */ | |
2336 | reinit_frame_cache (); | |
2337 | } | |
2338 | \f | |
70992597 | 2339 | |
63644780 NB |
2340 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2341 | ||
2342 | static void | |
2cf311eb | 2343 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2344 | { |
63644780 | 2345 | struct objfile *objf = NULL; |
63644780 | 2346 | struct program_space *pspace = current_program_space; |
63644780 NB |
2347 | |
2348 | dont_repeat (); | |
2349 | ||
2350 | if (args == NULL) | |
2351 | error (_("remove-symbol-file: no symbol file provided")); | |
2352 | ||
773a1edc | 2353 | gdb_argv argv (args); |
63644780 NB |
2354 | |
2355 | if (strcmp (argv[0], "-a") == 0) | |
2356 | { | |
2357 | /* Interpret the next argument as an address. */ | |
2358 | CORE_ADDR addr; | |
2359 | ||
2360 | if (argv[1] == NULL) | |
2361 | error (_("Missing address argument")); | |
2362 | ||
2363 | if (argv[2] != NULL) | |
2364 | error (_("Junk after %s"), argv[1]); | |
2365 | ||
2366 | addr = parse_and_eval_address (argv[1]); | |
2367 | ||
2030c079 | 2368 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2369 | { |
aed57c53 TT |
2370 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2371 | && (objfile->flags & OBJF_SHARED) != 0 | |
2372 | && objfile->pspace == pspace | |
2373 | && is_addr_in_objfile (addr, objfile)) | |
2374 | { | |
2375 | objf = objfile; | |
2376 | break; | |
2377 | } | |
63644780 NB |
2378 | } |
2379 | } | |
2380 | else if (argv[0] != NULL) | |
2381 | { | |
2382 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2383 | |
2384 | if (argv[1] != NULL) | |
2385 | error (_("Junk after %s"), argv[0]); | |
2386 | ||
ee0c3293 | 2387 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2388 | |
2030c079 | 2389 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2390 | { |
aed57c53 TT |
2391 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2392 | && (objfile->flags & OBJF_SHARED) != 0 | |
2393 | && objfile->pspace == pspace | |
2394 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2395 | { | |
2396 | objf = objfile; | |
2397 | break; | |
2398 | } | |
63644780 NB |
2399 | } |
2400 | } | |
2401 | ||
2402 | if (objf == NULL) | |
2403 | error (_("No symbol file found")); | |
2404 | ||
2405 | if (from_tty | |
2406 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2407 | objfile_name (objf))) | |
2408 | error (_("Not confirmed.")); | |
2409 | ||
268e4f09 | 2410 | objf->unlink (); |
63644780 | 2411 | clear_symtab_users (0); |
63644780 NB |
2412 | } |
2413 | ||
c906108c | 2414 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2415 | |
c906108c | 2416 | void |
fba45db2 | 2417 | reread_symbols (void) |
c906108c | 2418 | { |
c906108c | 2419 | long new_modtime; |
c906108c SS |
2420 | struct stat new_statbuf; |
2421 | int res; | |
4c404b8b | 2422 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2423 | |
bf227d61 | 2424 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2425 | { |
9cce227f TG |
2426 | if (objfile->obfd == NULL) |
2427 | continue; | |
2428 | ||
2429 | /* Separate debug objfiles are handled in the main objfile. */ | |
2430 | if (objfile->separate_debug_objfile_backlink) | |
2431 | continue; | |
2432 | ||
02aeec7b JB |
2433 | /* If this object is from an archive (what you usually create with |
2434 | `ar', often called a `static library' on most systems, though | |
2435 | a `shared library' on AIX is also an archive), then you should | |
2436 | stat on the archive name, not member name. */ | |
9cce227f | 2437 | if (objfile->obfd->my_archive) |
c7e97679 | 2438 | res = stat (bfd_get_filename (objfile->obfd->my_archive), &new_statbuf); |
9cce227f | 2439 | else |
4262abfb | 2440 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2441 | if (res != 0) |
2442 | { | |
c378eb4e | 2443 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2444 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2445 | objfile_name (objfile)); | |
9cce227f TG |
2446 | continue; |
2447 | } | |
2448 | new_modtime = new_statbuf.st_mtime; | |
2449 | if (new_modtime != objfile->mtime) | |
2450 | { | |
22068491 TT |
2451 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2452 | objfile_name (objfile)); | |
9cce227f TG |
2453 | |
2454 | /* There are various functions like symbol_file_add, | |
2455 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2456 | appear to do what we want. But they have various other | |
2457 | effects which we *don't* want. So we just do stuff | |
2458 | ourselves. We don't worry about mapped files (for one thing, | |
2459 | any mapped file will be out of date). */ | |
2460 | ||
2461 | /* If we get an error, blow away this objfile (not sure if | |
2462 | that is the correct response for things like shared | |
2463 | libraries). */ | |
268e4f09 | 2464 | objfile_up objfile_holder (objfile); |
ed2b3126 | 2465 | |
9cce227f | 2466 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2467 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2468 | |
7e10abd1 | 2469 | if (current_program_space->exec_bfd () != NULL |
0ba1096a | 2470 | && filename_cmp (bfd_get_filename (objfile->obfd), |
7e10abd1 | 2471 | bfd_get_filename (current_program_space->exec_bfd ())) == 0) |
9cce227f TG |
2472 | { |
2473 | /* Reload EXEC_BFD without asking anything. */ | |
2474 | ||
2475 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2476 | } | |
2477 | ||
f6eeced0 JK |
2478 | /* Keep the calls order approx. the same as in free_objfile. */ |
2479 | ||
2480 | /* Free the separate debug objfiles. It will be | |
2481 | automatically recreated by sym_read. */ | |
2482 | free_objfile_separate_debug (objfile); | |
2483 | ||
7b71fc97 L |
2484 | /* Clear the stale source cache. */ |
2485 | forget_cached_source_info (); | |
2486 | ||
f6eeced0 JK |
2487 | /* Remove any references to this objfile in the global |
2488 | value lists. */ | |
2489 | preserve_values (objfile); | |
2490 | ||
2491 | /* Nuke all the state that we will re-read. Much of the following | |
2492 | code which sets things to NULL really is necessary to tell | |
2493 | other parts of GDB that there is nothing currently there. | |
2494 | ||
2495 | Try to keep the freeing order compatible with free_objfile. */ | |
2496 | ||
2497 | if (objfile->sf != NULL) | |
2498 | { | |
2499 | (*objfile->sf->sym_finish) (objfile); | |
2500 | } | |
2501 | ||
2502 | clear_objfile_data (objfile); | |
2503 | ||
e1507e95 | 2504 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2505 | { |
192b62ce | 2506 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
b16c44de | 2507 | const char *obfd_filename; |
a4453b7e TT |
2508 | |
2509 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2510 | /* Open the new BFD before freeing the old one, so that | |
2511 | the filename remains live. */ | |
ad80db5b | 2512 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget)); |
192b62ce | 2513 | objfile->obfd = temp.release (); |
e1507e95 | 2514 | if (objfile->obfd == NULL) |
192b62ce | 2515 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2516 | } |
2517 | ||
c0c9f665 | 2518 | std::string original_name = objfile->original_name; |
24ba069a | 2519 | |
9cce227f TG |
2520 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2521 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2522 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2523 | bfd_errmsg (bfd_get_error ())); |
2524 | ||
6d6a12bf | 2525 | objfile->reset_psymtabs (); |
41664b45 DG |
2526 | |
2527 | /* NB: after this call to obstack_free, objfiles_changed | |
2528 | will need to be called (see discussion below). */ | |
9cce227f TG |
2529 | obstack_free (&objfile->objfile_obstack, 0); |
2530 | objfile->sections = NULL; | |
9d428aae SM |
2531 | objfile->section_offsets.clear (); |
2532 | objfile->sect_index_bss = -1; | |
2533 | objfile->sect_index_data = -1; | |
2534 | objfile->sect_index_rodata = -1; | |
2535 | objfile->sect_index_text = -1; | |
43f3e411 | 2536 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2537 | objfile->template_symbols = NULL; |
cf250e36 | 2538 | objfile->static_links.reset (nullptr); |
9cce227f | 2539 | |
9cce227f TG |
2540 | /* obstack_init also initializes the obstack so it is |
2541 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2542 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2543 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2544 | |
846060df JB |
2545 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2546 | data on the objfile's obstack (if sharing data across | |
2547 | multiple users is not possible), so it's important to | |
2548 | do it *after* the obstack has been initialized. */ | |
2549 | set_objfile_per_bfd (objfile); | |
2550 | ||
224c3ddb | 2551 | objfile->original_name |
efba19b0 | 2552 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2553 | |
779bd270 DE |
2554 | /* Reset the sym_fns pointer. The ELF reader can change it |
2555 | based on whether .gdb_index is present, and we need it to | |
2556 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2557 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2558 | |
d82ea6a8 | 2559 | build_objfile_section_table (objfile); |
9cce227f | 2560 | |
9cce227f TG |
2561 | /* What the hell is sym_new_init for, anyway? The concept of |
2562 | distinguishing between the main file and additional files | |
2563 | in this way seems rather dubious. */ | |
a42d7dd8 | 2564 | if (objfile == current_program_space->symfile_object_file) |
c906108c | 2565 | { |
9cce227f | 2566 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2567 | } |
9cce227f TG |
2568 | |
2569 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2570 | clear_complaints (); |
608e2dbb TT |
2571 | |
2572 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2573 | |
2574 | /* We are about to read new symbols and potentially also | |
2575 | DWARF information. Some targets may want to pass addresses | |
2576 | read from DWARF DIE's through an adjustment function before | |
2577 | saving them, like MIPS, which may call into | |
2578 | "find_pc_section". When called, that function will make | |
2579 | use of per-objfile program space data. | |
2580 | ||
2581 | Since we discarded our section information above, we have | |
2582 | dangling pointers in the per-objfile program space data | |
2583 | structure. Force GDB to update the section mapping | |
2584 | information by letting it know the objfile has changed, | |
2585 | making the dangling pointers point to correct data | |
2586 | again. */ | |
2587 | ||
2588 | objfiles_changed (); | |
2589 | ||
9d428aae SM |
2590 | /* Recompute section offsets and section indices. */ |
2591 | objfile->sf->sym_offsets (objfile, {}); | |
2592 | ||
608e2dbb | 2593 | read_symbols (objfile, 0); |
b11896a5 | 2594 | |
9cce227f | 2595 | if (!objfile_has_symbols (objfile)) |
c906108c | 2596 | { |
9cce227f | 2597 | wrap_here (""); |
22068491 | 2598 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2599 | wrap_here (""); |
c5aa993b | 2600 | } |
9cce227f TG |
2601 | |
2602 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2603 | clear_complaints (); |
9cce227f TG |
2604 | |
2605 | /* Getting new symbols may change our opinion about what is | |
2606 | frameless. */ | |
2607 | ||
2608 | reinit_frame_cache (); | |
2609 | ||
2610 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2611 | objfile_holder.release (); |
286526c1 | 2612 | defer_clear_users.release (); |
9cce227f TG |
2613 | |
2614 | /* If the mtime has changed between the time we set new_modtime | |
2615 | and now, we *want* this to be out of date, so don't call stat | |
2616 | again now. */ | |
2617 | objfile->mtime = new_modtime; | |
9cce227f | 2618 | init_entry_point_info (objfile); |
4ac39b97 | 2619 | |
4c404b8b | 2620 | new_objfiles.push_back (objfile); |
c906108c SS |
2621 | } |
2622 | } | |
c906108c | 2623 | |
4c404b8b | 2624 | if (!new_objfiles.empty ()) |
ea53e89f | 2625 | { |
c1e56572 | 2626 | clear_symtab_users (0); |
4ac39b97 JK |
2627 | |
2628 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2629 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2630 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2631 | for (auto iter : new_objfiles) |
c486b610 | 2632 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2633 | |
ea53e89f | 2634 | /* At least one objfile has changed, so we can consider that |
dda83cd7 | 2635 | the executable we're debugging has changed too. */ |
76727919 | 2636 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2637 | } |
c906108c | 2638 | } |
c906108c SS |
2639 | \f |
2640 | ||
593e3209 | 2641 | struct filename_language |
c5aa993b | 2642 | { |
593e3209 SM |
2643 | filename_language (const std::string &ext_, enum language lang_) |
2644 | : ext (ext_), lang (lang_) | |
2645 | {} | |
3fcf0b0d | 2646 | |
593e3209 SM |
2647 | std::string ext; |
2648 | enum language lang; | |
2649 | }; | |
c906108c | 2650 | |
593e3209 | 2651 | static std::vector<filename_language> filename_language_table; |
c906108c | 2652 | |
56618e20 TT |
2653 | /* See symfile.h. */ |
2654 | ||
2655 | void | |
2656 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2657 | { |
e171d6f1 | 2658 | gdb_assert (ext != nullptr); |
593e3209 | 2659 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2660 | } |
2661 | ||
2662 | static char *ext_args; | |
920d2a44 AC |
2663 | static void |
2664 | show_ext_args (struct ui_file *file, int from_tty, | |
2665 | struct cmd_list_element *c, const char *value) | |
2666 | { | |
3e43a32a MS |
2667 | fprintf_filtered (file, |
2668 | _("Mapping between filename extension " | |
2669 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2670 | value); |
2671 | } | |
c906108c SS |
2672 | |
2673 | static void | |
eb4c3f4a TT |
2674 | set_ext_lang_command (const char *args, |
2675 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2676 | { |
c906108c SS |
2677 | char *cp = ext_args; |
2678 | enum language lang; | |
2679 | ||
c378eb4e | 2680 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2681 | if (*cp != '.') |
8a3fe4f8 | 2682 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2683 | |
2684 | /* Find end of first arg. */ | |
c5aa993b | 2685 | while (*cp && !isspace (*cp)) |
c906108c SS |
2686 | cp++; |
2687 | ||
2688 | if (*cp == '\0') | |
3e43a32a MS |
2689 | error (_("'%s': two arguments required -- " |
2690 | "filename extension and language"), | |
c906108c SS |
2691 | ext_args); |
2692 | ||
c378eb4e | 2693 | /* Null-terminate first arg. */ |
c5aa993b | 2694 | *cp++ = '\0'; |
c906108c SS |
2695 | |
2696 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2697 | cp = skip_spaces (cp); |
c906108c SS |
2698 | |
2699 | if (*cp == '\0') | |
3e43a32a MS |
2700 | error (_("'%s': two arguments required -- " |
2701 | "filename extension and language"), | |
c906108c SS |
2702 | ext_args); |
2703 | ||
2704 | /* Lookup the language from among those we know. */ | |
2705 | lang = language_enum (cp); | |
2706 | ||
593e3209 | 2707 | auto it = filename_language_table.begin (); |
c906108c | 2708 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2709 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2710 | { |
593e3209 | 2711 | if (it->ext == ext_args) |
3fcf0b0d TT |
2712 | break; |
2713 | } | |
c906108c | 2714 | |
593e3209 | 2715 | if (it == filename_language_table.end ()) |
c906108c | 2716 | { |
c378eb4e | 2717 | /* New file extension. */ |
c906108c SS |
2718 | add_filename_language (ext_args, lang); |
2719 | } | |
2720 | else | |
2721 | { | |
c378eb4e | 2722 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2723 | |
2724 | /* if (from_tty) */ | |
2725 | /* query ("Really make files of type %s '%s'?", */ | |
2726 | /* ext_args, language_str (lang)); */ | |
2727 | ||
593e3209 | 2728 | it->lang = lang; |
c906108c SS |
2729 | } |
2730 | } | |
2731 | ||
2732 | static void | |
1d12d88f | 2733 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2734 | { |
a3f17187 | 2735 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2736 | printf_filtered ("\n\n"); |
593e3209 SM |
2737 | for (const filename_language &entry : filename_language_table) |
2738 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2739 | language_str (entry.lang)); | |
c906108c SS |
2740 | } |
2741 | ||
c906108c | 2742 | enum language |
dd786858 | 2743 | deduce_language_from_filename (const char *filename) |
c906108c | 2744 | { |
e6a959d6 | 2745 | const char *cp; |
c906108c SS |
2746 | |
2747 | if (filename != NULL) | |
2748 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2749 | { |
593e3209 SM |
2750 | for (const filename_language &entry : filename_language_table) |
2751 | if (entry.ext == cp) | |
2752 | return entry.lang; | |
3fcf0b0d | 2753 | } |
c906108c SS |
2754 | |
2755 | return language_unknown; | |
2756 | } | |
2757 | \f | |
43f3e411 DE |
2758 | /* Allocate and initialize a new symbol table. |
2759 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2760 | |
2761 | struct symtab * | |
43f3e411 | 2762 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2763 | { |
43f3e411 DE |
2764 | struct objfile *objfile = cust->objfile; |
2765 | struct symtab *symtab | |
2766 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2767 | |
be1e3d3e | 2768 | symtab->filename = objfile->intern (filename); |
c5aa993b JM |
2769 | symtab->fullname = NULL; |
2770 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2771 | |
db0fec5c DE |
2772 | /* This can be very verbose with lots of headers. |
2773 | Only print at higher debug levels. */ | |
2774 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2775 | { |
2776 | /* Be a bit clever with debugging messages, and don't print objfile | |
2777 | every time, only when it changes. */ | |
2778 | static char *last_objfile_name = NULL; | |
2779 | ||
2780 | if (last_objfile_name == NULL | |
4262abfb | 2781 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2782 | { |
2783 | xfree (last_objfile_name); | |
4262abfb | 2784 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2785 | fprintf_filtered (gdb_stdlog, |
2786 | "Creating one or more symtabs for objfile %s ...\n", | |
2787 | last_objfile_name); | |
45cfd468 | 2788 | } |
22068491 TT |
2789 | fprintf_filtered (gdb_stdlog, |
2790 | "Created symtab %s for module %s.\n", | |
2791 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2792 | } |
2793 | ||
43f3e411 DE |
2794 | /* Add it to CUST's list of symtabs. */ |
2795 | if (cust->filetabs == NULL) | |
2796 | { | |
2797 | cust->filetabs = symtab; | |
2798 | cust->last_filetab = symtab; | |
2799 | } | |
2800 | else | |
2801 | { | |
2802 | cust->last_filetab->next = symtab; | |
2803 | cust->last_filetab = symtab; | |
2804 | } | |
2805 | ||
2806 | /* Backlink to the containing compunit symtab. */ | |
2807 | symtab->compunit_symtab = cust; | |
2808 | ||
2809 | return symtab; | |
2810 | } | |
2811 | ||
2812 | /* Allocate and initialize a new compunit. | |
2813 | NAME is the name of the main source file, if there is one, or some | |
2814 | descriptive text if there are no source files. */ | |
2815 | ||
2816 | struct compunit_symtab * | |
2817 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2818 | { | |
2819 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2820 | struct compunit_symtab); | |
2821 | const char *saved_name; | |
2822 | ||
2823 | cu->objfile = objfile; | |
2824 | ||
2825 | /* The name we record here is only for display/debugging purposes. | |
2826 | Just save the basename to avoid path issues (too long for display, | |
2827 | relative vs absolute, etc.). */ | |
2828 | saved_name = lbasename (name); | |
021887d8 | 2829 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 DE |
2830 | |
2831 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2832 | ||
2833 | if (symtab_create_debug) | |
2834 | { | |
22068491 TT |
2835 | fprintf_filtered (gdb_stdlog, |
2836 | "Created compunit symtab %s for %s.\n", | |
2837 | host_address_to_string (cu), | |
2838 | cu->name); | |
43f3e411 DE |
2839 | } |
2840 | ||
2841 | return cu; | |
2842 | } | |
2843 | ||
2844 | /* Hook CU to the objfile it comes from. */ | |
2845 | ||
2846 | void | |
2847 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2848 | { | |
2849 | cu->next = cu->objfile->compunit_symtabs; | |
2850 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2851 | } |
c906108c | 2852 | \f |
c5aa993b | 2853 | |
b15cc25c PA |
2854 | /* Reset all data structures in gdb which may contain references to |
2855 | symbol table data. */ | |
c906108c SS |
2856 | |
2857 | void | |
b15cc25c | 2858 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2859 | { |
2860 | /* Someday, we should do better than this, by only blowing away | |
2861 | the things that really need to be blown. */ | |
c0501be5 DJ |
2862 | |
2863 | /* Clear the "current" symtab first, because it is no longer valid. | |
2864 | breakpoint_re_set may try to access the current symtab. */ | |
2865 | clear_current_source_symtab_and_line (); | |
2866 | ||
c906108c | 2867 | clear_displays (); |
1bfeeb0f | 2868 | clear_last_displayed_sal (); |
c906108c | 2869 | clear_pc_function_cache (); |
76727919 | 2870 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2871 | |
8756216b DP |
2872 | /* Varobj may refer to old symbols, perform a cleanup. */ |
2873 | varobj_invalidate (); | |
2874 | ||
e700d1b2 JB |
2875 | /* Now that the various caches have been cleared, we can re_set |
2876 | our breakpoints without risking it using stale data. */ | |
2877 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2878 | breakpoint_re_set (); | |
c906108c | 2879 | } |
c906108c | 2880 | \f |
c906108c SS |
2881 | /* OVERLAYS: |
2882 | The following code implements an abstraction for debugging overlay sections. | |
2883 | ||
2884 | The target model is as follows: | |
2885 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2886 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2887 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2888 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2889 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2890 | sections should be considered to be mapped from the VMA to the LMA. |
2891 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2892 | For instance, if a section has been mapped then its contents |
c5aa993b | 2893 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2894 | |
2895 | Two levels of debugger support for overlays are available. One is | |
2896 | "manual", in which the debugger relies on the user to tell it which | |
2897 | overlays are currently mapped. This level of support is | |
2898 | implemented entirely in the core debugger, and the information about | |
2899 | whether a section is mapped is kept in the objfile->obj_section table. | |
2900 | ||
2901 | The second level of support is "automatic", and is only available if | |
2902 | the target-specific code provides functionality to read the target's | |
2903 | overlay mapping table, and translate its contents for the debugger | |
2904 | (by updating the mapped state information in the obj_section tables). | |
2905 | ||
2906 | The interface is as follows: | |
c5aa993b JM |
2907 | User commands: |
2908 | overlay map <name> -- tell gdb to consider this section mapped | |
2909 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2910 | overlay list -- list the sections that GDB thinks are mapped | |
2911 | overlay read-target -- get the target's state of what's mapped | |
2912 | overlay off/manual/auto -- set overlay debugging state | |
2913 | Functional interface: | |
2914 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2915 | section, return that section. | |
5417f6dc | 2916 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2917 | the pc, either in its VMA or its LMA |
714835d5 | 2918 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2919 | section_is_overlay(sect): true if section's VMA != LMA |
2920 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2921 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2922 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2923 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2924 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2925 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2926 | either in VMA or LMA depending on whether | |
c378eb4e | 2927 | the symbol's section is currently mapped. */ |
c906108c SS |
2928 | |
2929 | /* Overlay debugging state: */ | |
2930 | ||
d874f1e2 | 2931 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2932 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2933 | |
c906108c | 2934 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2935 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2936 | SECTION is loaded at an address different from where it will "run". */ |
2937 | ||
2938 | int | |
714835d5 | 2939 | section_is_overlay (struct obj_section *section) |
c906108c | 2940 | { |
714835d5 UW |
2941 | if (overlay_debugging && section) |
2942 | { | |
714835d5 | 2943 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2944 | |
fd361982 AM |
2945 | if (bfd_section_lma (bfd_section) != 0 |
2946 | && bfd_section_lma (bfd_section) != bfd_section_vma (bfd_section)) | |
714835d5 UW |
2947 | return 1; |
2948 | } | |
c906108c SS |
2949 | |
2950 | return 0; | |
2951 | } | |
2952 | ||
2953 | /* Function: overlay_invalidate_all (void) | |
2954 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2955 | ||
2956 | static void | |
fba45db2 | 2957 | overlay_invalidate_all (void) |
c906108c | 2958 | { |
c906108c SS |
2959 | struct obj_section *sect; |
2960 | ||
2030c079 | 2961 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
2962 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
2963 | if (section_is_overlay (sect)) | |
2964 | sect->ovly_mapped = -1; | |
c906108c SS |
2965 | } |
2966 | ||
714835d5 | 2967 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2968 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2969 | |
2970 | Access to the ovly_mapped flag is restricted to this function, so | |
2971 | that we can do automatic update. If the global flag | |
2972 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2973 | overlay_invalidate_all. If the mapped state of the particular | |
2974 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2975 | ||
714835d5 UW |
2976 | int |
2977 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2978 | { |
9216df95 UW |
2979 | struct gdbarch *gdbarch; |
2980 | ||
714835d5 | 2981 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2982 | return 0; |
2983 | ||
c5aa993b | 2984 | switch (overlay_debugging) |
c906108c SS |
2985 | { |
2986 | default: | |
d874f1e2 | 2987 | case ovly_off: |
c5aa993b | 2988 | return 0; /* overlay debugging off */ |
d874f1e2 | 2989 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2990 | /* Unles there is a gdbarch_overlay_update function, |
dda83cd7 | 2991 | there's really nothing useful to do here (can't really go auto). */ |
08feed99 | 2992 | gdbarch = osect->objfile->arch (); |
9216df95 | 2993 | if (gdbarch_overlay_update_p (gdbarch)) |
c906108c SS |
2994 | { |
2995 | if (overlay_cache_invalid) | |
2996 | { | |
2997 | overlay_invalidate_all (); | |
2998 | overlay_cache_invalid = 0; | |
2999 | } | |
3000 | if (osect->ovly_mapped == -1) | |
9216df95 | 3001 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3002 | } |
86a73007 | 3003 | /* fall thru */ |
d874f1e2 | 3004 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3005 | return osect->ovly_mapped == 1; |
3006 | } | |
3007 | } | |
3008 | ||
c906108c SS |
3009 | /* Function: pc_in_unmapped_range |
3010 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3011 | ||
3012 | CORE_ADDR | |
714835d5 | 3013 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3014 | { |
714835d5 UW |
3015 | if (section_is_overlay (section)) |
3016 | { | |
714835d5 | 3017 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3018 | |
714835d5 | 3019 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
fd361982 | 3020 | bfd_vma size = bfd_section_size (bfd_section); |
714835d5 UW |
3021 | CORE_ADDR offset = obj_section_offset (section); |
3022 | ||
fd361982 AM |
3023 | if (bfd_section_lma (bfd_section) + offset <= pc |
3024 | && pc < bfd_section_lma (bfd_section) + offset + size) | |
714835d5 UW |
3025 | return 1; |
3026 | } | |
c906108c | 3027 | |
c906108c SS |
3028 | return 0; |
3029 | } | |
3030 | ||
3031 | /* Function: pc_in_mapped_range | |
3032 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3033 | ||
3034 | CORE_ADDR | |
714835d5 | 3035 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3036 | { |
714835d5 UW |
3037 | if (section_is_overlay (section)) |
3038 | { | |
3039 | if (obj_section_addr (section) <= pc | |
3040 | && pc < obj_section_endaddr (section)) | |
3041 | return 1; | |
3042 | } | |
c906108c | 3043 | |
c906108c SS |
3044 | return 0; |
3045 | } | |
3046 | ||
9ec8e6a0 JB |
3047 | /* Return true if the mapped ranges of sections A and B overlap, false |
3048 | otherwise. */ | |
3b7bacac | 3049 | |
b9362cc7 | 3050 | static int |
714835d5 | 3051 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3052 | { |
714835d5 UW |
3053 | CORE_ADDR a_start = obj_section_addr (a); |
3054 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3055 | CORE_ADDR b_start = obj_section_addr (b); | |
3056 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3057 | |
3058 | return (a_start < b_end && b_start < a_end); | |
3059 | } | |
3060 | ||
c906108c SS |
3061 | /* Function: overlay_unmapped_address (PC, SECTION) |
3062 | Returns the address corresponding to PC in the unmapped (load) range. | |
3063 | May be the same as PC. */ | |
3064 | ||
3065 | CORE_ADDR | |
714835d5 | 3066 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3067 | { |
714835d5 UW |
3068 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3069 | { | |
714835d5 | 3070 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3071 | |
fd361982 AM |
3072 | return (pc + bfd_section_lma (bfd_section) |
3073 | - bfd_section_vma (bfd_section)); | |
714835d5 | 3074 | } |
c906108c SS |
3075 | |
3076 | return pc; | |
3077 | } | |
3078 | ||
3079 | /* Function: overlay_mapped_address (PC, SECTION) | |
3080 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3081 | May be the same as PC. */ | |
3082 | ||
3083 | CORE_ADDR | |
714835d5 | 3084 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3085 | { |
714835d5 UW |
3086 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3087 | { | |
714835d5 | 3088 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3089 | |
fd361982 AM |
3090 | return (pc + bfd_section_vma (bfd_section) |
3091 | - bfd_section_lma (bfd_section)); | |
714835d5 | 3092 | } |
c906108c SS |
3093 | |
3094 | return pc; | |
3095 | } | |
3096 | ||
5417f6dc | 3097 | /* Function: symbol_overlayed_address |
c906108c SS |
3098 | Return one of two addresses (relative to the VMA or to the LMA), |
3099 | depending on whether the section is mapped or not. */ | |
3100 | ||
c5aa993b | 3101 | CORE_ADDR |
714835d5 | 3102 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3103 | { |
3104 | if (overlay_debugging) | |
3105 | { | |
c378eb4e | 3106 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3107 | if (section == 0) |
3108 | return address; | |
c378eb4e MS |
3109 | /* If the symbol's section is not an overlay, just return its |
3110 | address. */ | |
c906108c SS |
3111 | if (!section_is_overlay (section)) |
3112 | return address; | |
c378eb4e | 3113 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3114 | if (section_is_mapped (section)) |
3115 | return address; | |
3116 | /* | |
3117 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3118 | * then return its LOADED address rather than its vma address!! | |
3119 | */ | |
3120 | return overlay_unmapped_address (address, section); | |
3121 | } | |
3122 | return address; | |
3123 | } | |
3124 | ||
5417f6dc | 3125 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3126 | Return the best-match overlay section for PC: |
3127 | If PC matches a mapped overlay section's VMA, return that section. | |
3128 | Else if PC matches an unmapped section's VMA, return that section. | |
3129 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3130 | ||
714835d5 | 3131 | struct obj_section * |
fba45db2 | 3132 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3133 | { |
c906108c SS |
3134 | struct obj_section *osect, *best_match = NULL; |
3135 | ||
3136 | if (overlay_debugging) | |
b631e59b | 3137 | { |
2030c079 | 3138 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3139 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3140 | if (section_is_overlay (osect)) | |
3141 | { | |
3142 | if (pc_in_mapped_range (pc, osect)) | |
3143 | { | |
3144 | if (section_is_mapped (osect)) | |
3145 | return osect; | |
3146 | else | |
3147 | best_match = osect; | |
3148 | } | |
3149 | else if (pc_in_unmapped_range (pc, osect)) | |
3150 | best_match = osect; | |
3151 | } | |
b631e59b | 3152 | } |
714835d5 | 3153 | return best_match; |
c906108c SS |
3154 | } |
3155 | ||
3156 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3157 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3158 | currently marked as MAPPED, return that section. Else return NULL. */ |
3159 | ||
714835d5 | 3160 | struct obj_section * |
fba45db2 | 3161 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3162 | { |
c906108c SS |
3163 | struct obj_section *osect; |
3164 | ||
3165 | if (overlay_debugging) | |
b631e59b | 3166 | { |
2030c079 | 3167 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3168 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3169 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3170 | return osect; | |
b631e59b | 3171 | } |
c906108c SS |
3172 | |
3173 | return NULL; | |
3174 | } | |
3175 | ||
3176 | /* Function: list_overlays_command | |
c378eb4e | 3177 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3178 | |
5d3055ad | 3179 | static void |
2cf311eb | 3180 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3181 | { |
c5aa993b | 3182 | int nmapped = 0; |
c906108c SS |
3183 | struct obj_section *osect; |
3184 | ||
3185 | if (overlay_debugging) | |
b631e59b | 3186 | { |
2030c079 | 3187 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3188 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3189 | if (section_is_mapped (osect)) | |
3190 | { | |
08feed99 | 3191 | struct gdbarch *gdbarch = objfile->arch (); |
3b9d3ac2 TT |
3192 | const char *name; |
3193 | bfd_vma lma, vma; | |
3194 | int size; | |
3195 | ||
fd361982 AM |
3196 | vma = bfd_section_vma (osect->the_bfd_section); |
3197 | lma = bfd_section_lma (osect->the_bfd_section); | |
3198 | size = bfd_section_size (osect->the_bfd_section); | |
3199 | name = bfd_section_name (osect->the_bfd_section); | |
3b9d3ac2 TT |
3200 | |
3201 | printf_filtered ("Section %s, loaded at ", name); | |
3202 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3203 | puts_filtered (" - "); | |
3204 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3205 | printf_filtered (", mapped at "); | |
3206 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3207 | puts_filtered (" - "); | |
3208 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3209 | puts_filtered ("\n"); | |
3210 | ||
3211 | nmapped++; | |
3212 | } | |
b631e59b | 3213 | } |
c906108c | 3214 | if (nmapped == 0) |
a3f17187 | 3215 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3216 | } |
3217 | ||
3218 | /* Function: map_overlay_command | |
3219 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3220 | ||
5d3055ad | 3221 | static void |
2cf311eb | 3222 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3223 | { |
c5aa993b | 3224 | struct obj_section *sec, *sec2; |
c906108c SS |
3225 | |
3226 | if (!overlay_debugging) | |
3e43a32a MS |
3227 | error (_("Overlay debugging not enabled. Use " |
3228 | "either the 'overlay auto' or\n" | |
3229 | "the 'overlay manual' command.")); | |
c906108c SS |
3230 | |
3231 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3232 | error (_("Argument required: name of an overlay section")); |
c906108c | 3233 | |
c378eb4e | 3234 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3235 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 | 3236 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
fd361982 | 3237 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
c5aa993b | 3238 | { |
3b9d3ac2 TT |
3239 | /* Now, check to see if the section is an overlay. */ |
3240 | if (!section_is_overlay (sec)) | |
3241 | continue; /* not an overlay section */ | |
3242 | ||
3243 | /* Mark the overlay as "mapped". */ | |
3244 | sec->ovly_mapped = 1; | |
3245 | ||
3246 | /* Next, make a pass and unmap any sections that are | |
3247 | overlapped by this new section: */ | |
2030c079 | 3248 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3249 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3250 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3251 | sec2)) | |
3252 | { | |
3253 | if (info_verbose) | |
3254 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
fd361982 | 3255 | bfd_section_name (sec2->the_bfd_section)); |
3b9d3ac2 TT |
3256 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
3257 | } | |
3258 | return; | |
c5aa993b | 3259 | } |
8a3fe4f8 | 3260 | error (_("No overlay section called %s"), args); |
c906108c SS |
3261 | } |
3262 | ||
3263 | /* Function: unmap_overlay_command | |
5417f6dc | 3264 | Mark the overlay section as unmapped |
c906108c SS |
3265 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3266 | ||
5d3055ad | 3267 | static void |
2cf311eb | 3268 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3269 | { |
7a270e0c | 3270 | struct obj_section *sec = NULL; |
c906108c SS |
3271 | |
3272 | if (!overlay_debugging) | |
3e43a32a MS |
3273 | error (_("Overlay debugging not enabled. " |
3274 | "Use either the 'overlay auto' or\n" | |
3275 | "the 'overlay manual' command.")); | |
c906108c SS |
3276 | |
3277 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3278 | error (_("Argument required: name of an overlay section")); |
c906108c | 3279 | |
c378eb4e | 3280 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3281 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 3282 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
fd361982 | 3283 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
3b9d3ac2 TT |
3284 | { |
3285 | if (!sec->ovly_mapped) | |
3286 | error (_("Section %s is not mapped"), args); | |
3287 | sec->ovly_mapped = 0; | |
3288 | return; | |
3289 | } | |
8a3fe4f8 | 3290 | error (_("No overlay section called %s"), args); |
c906108c SS |
3291 | } |
3292 | ||
3293 | /* Function: overlay_auto_command | |
3294 | A utility command to turn on overlay debugging. | |
c378eb4e | 3295 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3296 | |
3297 | static void | |
2cf311eb | 3298 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3299 | { |
d874f1e2 | 3300 | overlay_debugging = ovly_auto; |
1900040c | 3301 | enable_overlay_breakpoints (); |
c906108c | 3302 | if (info_verbose) |
a3f17187 | 3303 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3304 | } |
3305 | ||
3306 | /* Function: overlay_manual_command | |
3307 | A utility command to turn on overlay debugging. | |
c378eb4e | 3308 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3309 | |
3310 | static void | |
2cf311eb | 3311 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3312 | { |
d874f1e2 | 3313 | overlay_debugging = ovly_on; |
1900040c | 3314 | disable_overlay_breakpoints (); |
c906108c | 3315 | if (info_verbose) |
a3f17187 | 3316 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3317 | } |
3318 | ||
3319 | /* Function: overlay_off_command | |
3320 | A utility command to turn on overlay debugging. | |
c378eb4e | 3321 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3322 | |
3323 | static void | |
2cf311eb | 3324 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3325 | { |
d874f1e2 | 3326 | overlay_debugging = ovly_off; |
1900040c | 3327 | disable_overlay_breakpoints (); |
c906108c | 3328 | if (info_verbose) |
a3f17187 | 3329 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3330 | } |
3331 | ||
3332 | static void | |
2cf311eb | 3333 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3334 | { |
e17c207e UW |
3335 | struct gdbarch *gdbarch = get_current_arch (); |
3336 | ||
3337 | if (gdbarch_overlay_update_p (gdbarch)) | |
3338 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3339 | else |
8a3fe4f8 | 3340 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3341 | } |
3342 | ||
c378eb4e | 3343 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3344 | static struct cmd_list_element *overlaylist; |
c906108c | 3345 | |
c906108c SS |
3346 | /* Target Overlays for the "Simplest" overlay manager: |
3347 | ||
5417f6dc RM |
3348 | This is GDB's default target overlay layer. It works with the |
3349 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3350 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3351 | so targets that use a different runtime overlay manager can |
c906108c SS |
3352 | substitute their own overlay_update function and take over the |
3353 | function pointer. | |
3354 | ||
3355 | The overlay_update function pokes around in the target's data structures | |
3356 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3357 | this information. | |
3358 | ||
3359 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3360 | unsigned _novlys; /# number of overlay sections #/ |
3361 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3362 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3363 | {..., ..., ..., ...}, |
3364 | } | |
3365 | unsigned _novly_regions; /# number of overlay regions #/ | |
3366 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3367 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3368 | {..., ..., ...}, |
3369 | } | |
c906108c SS |
3370 | These functions will attempt to update GDB's mappedness state in the |
3371 | symbol section table, based on the target's mappedness state. | |
3372 | ||
3373 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3374 | attempt to detect when the cached copy is invalidated. The main | |
3375 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3376 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3377 | the target (whenever possible). */ |
c906108c SS |
3378 | |
3379 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3380 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3381 | static unsigned cache_novlys = 0; |
c906108c | 3382 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3383 | enum ovly_index |
3384 | { | |
438e1e42 | 3385 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3386 | }; |
c906108c | 3387 | |
c378eb4e | 3388 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3389 | |
c906108c | 3390 | static void |
fba45db2 | 3391 | simple_free_overlay_table (void) |
c906108c | 3392 | { |
84d53fa9 | 3393 | xfree (cache_ovly_table); |
c5aa993b | 3394 | cache_novlys = 0; |
c906108c SS |
3395 | cache_ovly_table = NULL; |
3396 | cache_ovly_table_base = 0; | |
3397 | } | |
3398 | ||
9216df95 | 3399 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3400 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3401 | |
c906108c | 3402 | static void |
9216df95 | 3403 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3404 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3405 | { |
c378eb4e | 3406 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3407 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3408 | int i; |
c906108c | 3409 | |
9216df95 | 3410 | read_memory (memaddr, buf, len * size); |
c906108c | 3411 | for (i = 0; i < len; i++) |
e17a4113 | 3412 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3413 | } |
3414 | ||
3415 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3416 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3417 | |
c5aa993b | 3418 | static int |
fba45db2 | 3419 | simple_read_overlay_table (void) |
c906108c | 3420 | { |
3b7344d5 | 3421 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3422 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3423 | struct gdbarch *gdbarch; |
3424 | int word_size; | |
e17a4113 | 3425 | enum bfd_endian byte_order; |
c906108c SS |
3426 | |
3427 | simple_free_overlay_table (); | |
9b27852e | 3428 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3429 | if (! novlys_msym.minsym) |
c906108c | 3430 | { |
8a3fe4f8 | 3431 | error (_("Error reading inferior's overlay table: " |
dda83cd7 SM |
3432 | "couldn't find `_novlys' variable\n" |
3433 | "in inferior. Use `overlay manual' mode.")); | |
0d43edd1 | 3434 | return 0; |
c906108c | 3435 | } |
0d43edd1 | 3436 | |
7c7b6655 TT |
3437 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3438 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3439 | { |
8a3fe4f8 | 3440 | error (_("Error reading inferior's overlay table: couldn't find " |
dda83cd7 SM |
3441 | "`_ovly_table' array\n" |
3442 | "in inferior. Use `overlay manual' mode.")); | |
0d43edd1 JB |
3443 | return 0; |
3444 | } | |
3445 | ||
08feed99 | 3446 | gdbarch = ovly_table_msym.objfile->arch (); |
9216df95 | 3447 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3448 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3449 | |
77e371c0 TT |
3450 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3451 | 4, byte_order); | |
0d43edd1 | 3452 | cache_ovly_table |
224c3ddb | 3453 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3454 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3455 | read_target_long_array (cache_ovly_table_base, |
dda83cd7 SM |
3456 | (unsigned int *) cache_ovly_table, |
3457 | cache_novlys * 4, word_size, byte_order); | |
0d43edd1 | 3458 | |
c5aa993b | 3459 | return 1; /* SUCCESS */ |
c906108c SS |
3460 | } |
3461 | ||
5417f6dc | 3462 | /* Function: simple_overlay_update_1 |
c906108c SS |
3463 | A helper function for simple_overlay_update. Assuming a cached copy |
3464 | of _ovly_table exists, look through it to find an entry whose vma, | |
3465 | lma and size match those of OSECT. Re-read the entry and make sure | |
3466 | it still matches OSECT (else the table may no longer be valid). | |
3467 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3468 | success, 0 for failure. */ | |
3469 | ||
3470 | static int | |
fba45db2 | 3471 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3472 | { |
764c99c1 | 3473 | int i; |
fbd35540 | 3474 | asection *bsect = osect->the_bfd_section; |
08feed99 | 3475 | struct gdbarch *gdbarch = osect->objfile->arch (); |
9216df95 | 3476 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3477 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3478 | |
c906108c | 3479 | for (i = 0; i < cache_novlys; i++) |
fd361982 AM |
3480 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3481 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c | 3482 | { |
9216df95 UW |
3483 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3484 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3485 | 4, word_size, byte_order); |
fd361982 AM |
3486 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3487 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c SS |
3488 | { |
3489 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3490 | return 1; | |
3491 | } | |
c378eb4e | 3492 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3493 | return 0; |
3494 | } | |
3495 | return 0; | |
3496 | } | |
3497 | ||
3498 | /* Function: simple_overlay_update | |
5417f6dc RM |
3499 | If OSECT is NULL, then update all sections' mapped state |
3500 | (after re-reading the entire target _ovly_table). | |
3501 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3502 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3503 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3504 | re-read the entire cache, and go ahead and update all sections. */ |
3505 | ||
1c772458 | 3506 | void |
fba45db2 | 3507 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3508 | { |
c378eb4e | 3509 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3510 | if (osect) |
c378eb4e | 3511 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3512 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3513 | { |
3514 | /* Does its cached location match what's currently in the | |
3515 | symtab? */ | |
3b7344d5 | 3516 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3517 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3518 | ||
3b7344d5 | 3519 | if (minsym.minsym == NULL) |
9cc89665 MS |
3520 | error (_("Error reading inferior's overlay table: couldn't " |
3521 | "find `_ovly_table' array\n" | |
3522 | "in inferior. Use `overlay manual' mode.")); | |
3523 | ||
77e371c0 | 3524 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3525 | /* Then go ahead and try to look up this single section in |
3526 | the cache. */ | |
3527 | if (simple_overlay_update_1 (osect)) | |
3528 | /* Found it! We're done. */ | |
3529 | return; | |
3530 | } | |
c906108c SS |
3531 | |
3532 | /* Cached table no good: need to read the entire table anew. | |
3533 | Or else we want all the sections, in which case it's actually | |
3534 | more efficient to read the whole table in one block anyway. */ | |
3535 | ||
0d43edd1 JB |
3536 | if (! simple_read_overlay_table ()) |
3537 | return; | |
3538 | ||
c378eb4e | 3539 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3540 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3541 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3542 | if (section_is_overlay (osect)) | |
3543 | { | |
3544 | int i; | |
3545 | asection *bsect = osect->the_bfd_section; | |
3546 | ||
3547 | for (i = 0; i < cache_novlys; i++) | |
fd361982 AM |
3548 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3549 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
3b9d3ac2 TT |
3550 | { /* obj_section matches i'th entry in ovly_table. */ |
3551 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3552 | break; /* finished with inner for loop: break out. */ | |
3553 | } | |
3554 | } | |
c906108c SS |
3555 | } |
3556 | ||
ac8035ab TG |
3557 | /* Default implementation for sym_relocate. */ |
3558 | ||
ac8035ab TG |
3559 | bfd_byte * |
3560 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
dda83cd7 | 3561 | bfd_byte *buf) |
ac8035ab | 3562 | { |
3019eac3 DE |
3563 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3564 | DWO file. */ | |
3565 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3566 | |
3567 | /* We're only interested in sections with relocation | |
3568 | information. */ | |
3569 | if ((sectp->flags & SEC_RELOC) == 0) | |
3570 | return NULL; | |
3571 | ||
3572 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3573 | all sections begin at 0. */ | |
ad7277da TT |
3574 | for (asection *sect : gdb_bfd_sections (abfd)) |
3575 | { | |
3576 | sect->output_section = sect; | |
3577 | sect->output_offset = 0; | |
3578 | } | |
ac8035ab TG |
3579 | |
3580 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3581 | } | |
3582 | ||
086df311 DJ |
3583 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3584 | contents are stored in BUF if it is non-NULL, or returned in a | |
3585 | malloc'd buffer otherwise. | |
3586 | ||
3587 | For some platforms and debug info formats, shared libraries contain | |
3588 | relocations against the debug sections (particularly for DWARF-2; | |
3589 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3590 | the version of the linker in use). Also, ELF object files naturally | |
3591 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3592 | the relocations in order to get the locations of symbols correct. |
3593 | Another example that may require relocation processing, is the | |
3594 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3595 | debug section. */ | |
086df311 DJ |
3596 | |
3597 | bfd_byte * | |
ac8035ab | 3598 | symfile_relocate_debug_section (struct objfile *objfile, |
dda83cd7 | 3599 | asection *sectp, bfd_byte *buf) |
086df311 | 3600 | { |
ac8035ab | 3601 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3602 | |
ac8035ab | 3603 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3604 | } |
c906108c | 3605 | |
62982abd | 3606 | symfile_segment_data_up |
31d99776 DJ |
3607 | get_symfile_segment_data (bfd *abfd) |
3608 | { | |
00b5771c | 3609 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3610 | |
3611 | if (sf == NULL) | |
3612 | return NULL; | |
3613 | ||
3614 | return sf->sym_segments (abfd); | |
3615 | } | |
3616 | ||
28c32713 JB |
3617 | /* Given: |
3618 | - DATA, containing segment addresses from the object file ABFD, and | |
3619 | the mapping from ABFD's sections onto the segments that own them, | |
3620 | and | |
3621 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3622 | segment addresses reported by the target, | |
3623 | store the appropriate offsets for each section in OFFSETS. | |
3624 | ||
3625 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3626 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3627 | ||
8d385431 DJ |
3628 | If there are more entries, then ignore the extra. The target may |
3629 | not be able to distinguish between an empty data segment and a | |
3630 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3631 | |
31d99776 | 3632 | int |
3189cb12 DE |
3633 | symfile_map_offsets_to_segments (bfd *abfd, |
3634 | const struct symfile_segment_data *data, | |
6a053cb1 | 3635 | section_offsets &offsets, |
31d99776 DJ |
3636 | int num_segment_bases, |
3637 | const CORE_ADDR *segment_bases) | |
3638 | { | |
3639 | int i; | |
3640 | asection *sect; | |
3641 | ||
28c32713 JB |
3642 | /* It doesn't make sense to call this function unless you have some |
3643 | segment base addresses. */ | |
202b96c1 | 3644 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3645 | |
31d99776 DJ |
3646 | /* If we do not have segment mappings for the object file, we |
3647 | can not relocate it by segments. */ | |
3648 | gdb_assert (data != NULL); | |
68b888ff | 3649 | gdb_assert (data->segments.size () > 0); |
31d99776 | 3650 | |
31d99776 DJ |
3651 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3652 | { | |
31d99776 DJ |
3653 | int which = data->segment_info[i]; |
3654 | ||
68b888ff | 3655 | gdb_assert (0 <= which && which <= data->segments.size ()); |
28c32713 JB |
3656 | |
3657 | /* Don't bother computing offsets for sections that aren't | |
dda83cd7 | 3658 | loaded as part of any segment. */ |
28c32713 | 3659 | if (! which) |
dda83cd7 | 3660 | continue; |
28c32713 JB |
3661 | |
3662 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
dda83cd7 | 3663 | segments mentioned in DATA->segment_info. */ |
31d99776 | 3664 | if (which > num_segment_bases) |
dda83cd7 | 3665 | which = num_segment_bases; |
31d99776 | 3666 | |
68b888ff | 3667 | offsets[i] = segment_bases[which - 1] - data->segments[which - 1].base; |
31d99776 DJ |
3668 | } |
3669 | ||
3670 | return 1; | |
3671 | } | |
3672 | ||
3673 | static void | |
3674 | symfile_find_segment_sections (struct objfile *objfile) | |
3675 | { | |
3676 | bfd *abfd = objfile->obfd; | |
3677 | int i; | |
3678 | asection *sect; | |
31d99776 | 3679 | |
62982abd SM |
3680 | symfile_segment_data_up data |
3681 | = get_symfile_segment_data (objfile->obfd); | |
31d99776 DJ |
3682 | if (data == NULL) |
3683 | return; | |
3684 | ||
68b888ff | 3685 | if (data->segments.size () != 1 && data->segments.size () != 2) |
62982abd | 3686 | return; |
31d99776 DJ |
3687 | |
3688 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3689 | { | |
31d99776 DJ |
3690 | int which = data->segment_info[i]; |
3691 | ||
3692 | if (which == 1) | |
3693 | { | |
3694 | if (objfile->sect_index_text == -1) | |
3695 | objfile->sect_index_text = sect->index; | |
3696 | ||
3697 | if (objfile->sect_index_rodata == -1) | |
3698 | objfile->sect_index_rodata = sect->index; | |
3699 | } | |
3700 | else if (which == 2) | |
3701 | { | |
3702 | if (objfile->sect_index_data == -1) | |
3703 | objfile->sect_index_data = sect->index; | |
3704 | ||
3705 | if (objfile->sect_index_bss == -1) | |
3706 | objfile->sect_index_bss = sect->index; | |
3707 | } | |
3708 | } | |
31d99776 DJ |
3709 | } |
3710 | ||
76ad5e1e NB |
3711 | /* Listen for free_objfile events. */ |
3712 | ||
3713 | static void | |
3714 | symfile_free_objfile (struct objfile *objfile) | |
3715 | { | |
c33b2f12 MM |
3716 | /* Remove the target sections owned by this objfile. */ |
3717 | if (objfile != NULL) | |
2a3f84af | 3718 | current_program_space->remove_target_sections ((void *) objfile); |
76ad5e1e NB |
3719 | } |
3720 | ||
540c2971 DE |
3721 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3722 | Expand all symtabs that match the specified criteria. | |
3723 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3724 | ||
3725 | void | |
14bc53a8 PA |
3726 | expand_symtabs_matching |
3727 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3728 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3729 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3730 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3731 | enum search_domain kind) | |
540c2971 | 3732 | { |
2030c079 | 3733 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3734 | { |
3735 | if (objfile->sf) | |
3736 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
c1a66c06 | 3737 | &lookup_name, |
aed57c53 TT |
3738 | symbol_matcher, |
3739 | expansion_notify, kind); | |
3740 | } | |
540c2971 DE |
3741 | } |
3742 | ||
3743 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3744 | Map function FUN over every file. | |
3745 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3746 | ||
3747 | void | |
bb4142cf DE |
3748 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3749 | int need_fullname) | |
540c2971 | 3750 | { |
2030c079 | 3751 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3752 | { |
3753 | if (objfile->sf) | |
3754 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3755 | need_fullname); | |
3756 | } | |
540c2971 DE |
3757 | } |
3758 | ||
32fa66eb SM |
3759 | #if GDB_SELF_TEST |
3760 | ||
3761 | namespace selftests { | |
3762 | namespace filename_language { | |
3763 | ||
32fa66eb SM |
3764 | static void test_filename_language () |
3765 | { | |
3766 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3767 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3768 | |
3769 | /* Test deducing an unknown extension. */ | |
3770 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3771 | SELF_CHECK (lang == language_unknown); | |
3772 | ||
3773 | /* Test deducing a known extension. */ | |
3774 | lang = deduce_language_from_filename ("myfile.c"); | |
3775 | SELF_CHECK (lang == language_c); | |
3776 | ||
3777 | /* Test adding a new extension using the internal API. */ | |
3778 | add_filename_language (".blah", language_pascal); | |
3779 | lang = deduce_language_from_filename ("myfile.blah"); | |
3780 | SELF_CHECK (lang == language_pascal); | |
3781 | } | |
3782 | ||
3783 | static void | |
3784 | test_set_ext_lang_command () | |
3785 | { | |
3786 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3787 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3788 | |
3789 | /* Confirm that the .hello extension is not known. */ | |
3790 | language lang = deduce_language_from_filename ("cake.hello"); | |
3791 | SELF_CHECK (lang == language_unknown); | |
3792 | ||
3793 | /* Test adding a new extension using the CLI command. */ | |
b02f78f9 | 3794 | auto args_holder = make_unique_xstrdup (".hello rust"); |
32fa66eb SM |
3795 | ext_args = args_holder.get (); |
3796 | set_ext_lang_command (NULL, 1, NULL); | |
3797 | ||
3798 | lang = deduce_language_from_filename ("cake.hello"); | |
3799 | SELF_CHECK (lang == language_rust); | |
3800 | ||
3801 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3802 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3803 | args_holder.reset (xstrdup (".hello pascal")); |
3804 | ext_args = args_holder.get (); | |
3805 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3806 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3807 | |
3808 | lang = deduce_language_from_filename ("cake.hello"); | |
3809 | SELF_CHECK (lang == language_pascal); | |
3810 | SELF_CHECK (size_before == size_after); | |
3811 | } | |
3812 | ||
3813 | } /* namespace filename_language */ | |
3814 | } /* namespace selftests */ | |
3815 | ||
3816 | #endif /* GDB_SELF_TEST */ | |
3817 | ||
6c265988 | 3818 | void _initialize_symfile (); |
c906108c | 3819 | void |
6c265988 | 3820 | _initialize_symfile () |
c906108c SS |
3821 | { |
3822 | struct cmd_list_element *c; | |
c5aa993b | 3823 | |
76727919 | 3824 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3825 | |
97cbe998 | 3826 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3827 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3828 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3829 | faster.\n\ |
3830 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3831 | symbolic debug information." | |
8ca2f0b9 | 3832 | |
1a966eab AC |
3833 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3834 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3835 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3836 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3837 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3838 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3839 | set_cmd_completer (c, filename_completer); |
c906108c | 3840 | |
1a966eab | 3841 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3842 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3843 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3844 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3845 | ADDR is the starting address of the file's text.\n\ |
3846 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3847 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3848 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3849 | OFF is an optional offset which is added to the default load addresses\n\ | |
3850 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3851 | READNOW_READNEVER_HELP), |
c906108c | 3852 | &cmdlist); |
5ba2abeb | 3853 | set_cmd_completer (c, filename_completer); |
c906108c | 3854 | |
63644780 NB |
3855 | c = add_cmd ("remove-symbol-file", class_files, |
3856 | remove_symbol_file_command, _("\ | |
3857 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3858 | Usage: remove-symbol-file FILENAME\n\ | |
3859 | remove-symbol-file -a ADDRESS\n\ | |
3860 | The file to remove can be identified by its filename or by an address\n\ | |
3861 | that lies within the boundaries of this symbol file in memory."), | |
3862 | &cmdlist); | |
3863 | ||
1a966eab | 3864 | c = add_cmd ("load", class_files, load_command, _("\ |
590042fc PW |
3865 | Dynamically load FILE into the running program.\n\ |
3866 | FILE symbols are recorded for access from GDB.\n\ | |
8ca2f0b9 | 3867 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3868 | An optional load OFFSET may also be given as a literal address.\n\ |
3869 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3870 | on its own."), &cmdlist); |
5ba2abeb | 3871 | set_cmd_completer (c, filename_completer); |
c906108c | 3872 | |
0743fc83 TT |
3873 | add_basic_prefix_cmd ("overlay", class_support, |
3874 | _("Commands for debugging overlays."), &overlaylist, | |
3875 | "overlay ", 0, &cmdlist); | |
c906108c | 3876 | |
57b4f16e PW |
3877 | add_com_alias ("ovly", "overlay", class_support, 1); |
3878 | add_com_alias ("ov", "overlay", class_support, 1); | |
c906108c | 3879 | |
c5aa993b | 3880 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3881 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3882 | |
c5aa993b | 3883 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3884 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3885 | |
c5aa993b | 3886 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3887 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3888 | |
c5aa993b | 3889 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3890 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3891 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3892 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3893 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3894 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3895 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3896 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3897 | |
3898 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3899 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3900 | &ext_args, _("\ | |
3901 | Set mapping between filename extension and source language."), _("\ | |
3902 | Show mapping between filename extension and source language."), _("\ | |
3903 | Usage: set extension-language .foo bar"), | |
3904 | set_ext_lang_command, | |
920d2a44 | 3905 | show_ext_args, |
26c41df3 | 3906 | &setlist, &showlist); |
c906108c | 3907 | |
c5aa993b | 3908 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3909 | _("All filename extensions associated with a source language.")); |
917317f4 | 3910 | |
525226b5 AC |
3911 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3912 | &debug_file_directory, _("\ | |
24ddea62 JK |
3913 | Set the directories where separate debug symbols are searched for."), _("\ |
3914 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3915 | Separate debug symbols are first searched for in the same\n\ |
3916 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3917 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3918 | each global debug-file-directory component prepended."), |
525226b5 | 3919 | NULL, |
920d2a44 | 3920 | show_debug_file_directory, |
525226b5 | 3921 | &setlist, &showlist); |
770e7fc7 DE |
3922 | |
3923 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3924 | print_symbol_loading_enums, &print_symbol_loading, | |
3925 | _("\ | |
3926 | Set printing of symbol loading messages."), _("\ | |
3927 | Show printing of symbol loading messages."), _("\ | |
3928 | off == turn all messages off\n\ | |
3929 | brief == print messages for the executable,\n\ | |
dda83cd7 | 3930 | and brief messages for shared libraries\n\ |
770e7fc7 | 3931 | full == print messages for the executable,\n\ |
dda83cd7 | 3932 | and messages for each shared library."), |
770e7fc7 DE |
3933 | NULL, |
3934 | NULL, | |
3935 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3936 | |
3937 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3938 | &separate_debug_file_debug, _("\ | |
3939 | Set printing of separate debug info file search debug."), _("\ | |
3940 | Show printing of separate debug info file search debug."), _("\ | |
3941 | When on, GDB prints the searched locations while looking for separate debug \ | |
3942 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3943 | |
3944 | #if GDB_SELF_TEST | |
3945 | selftests::register_test | |
3946 | ("filename_language", selftests::filename_language::test_filename_language); | |
3947 | selftests::register_test | |
3948 | ("set_ext_lang_command", | |
3949 | selftests::filename_language::test_set_ext_lang_command); | |
3950 | #endif | |
c906108c | 3951 | } |