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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
b811d2c2 | 3 | Copyright (C) 1990-2020 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
e0eac551 | 47 | #include "readline/tilde.h" |
fe898f56 | 48 | #include "block.h" |
76727919 | 49 | #include "observable.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
268a13a5 TT |
59 | #include "gdbsupport/byte-vector.h" |
60 | #include "gdbsupport/pathstuff.h" | |
61 | #include "gdbsupport/selftest.h" | |
47fd17cd | 62 | #include "cli/cli-style.h" |
268a13a5 | 63 | #include "gdbsupport/forward-scope-exit.h" |
c906108c | 64 | |
c906108c SS |
65 | #include <sys/types.h> |
66 | #include <fcntl.h> | |
53ce3c39 | 67 | #include <sys/stat.h> |
c906108c | 68 | #include <ctype.h> |
dcb07cfa | 69 | #include <chrono> |
37e136b1 | 70 | #include <algorithm> |
c906108c | 71 | |
ccefe4c4 | 72 | #include "psymtab.h" |
c906108c | 73 | |
3e43a32a MS |
74 | int (*deprecated_ui_load_progress_hook) (const char *section, |
75 | unsigned long num); | |
9a4105ab | 76 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
77 | unsigned long section_sent, |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
c2d11a7d | 80 | unsigned long total_size); |
769d7dc4 AC |
81 | void (*deprecated_pre_add_symbol_hook) (const char *); |
82 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 83 | |
286526c1 TT |
84 | using clear_symtab_users_cleanup |
85 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 86 | |
c378eb4e MS |
87 | /* Global variables owned by this file. */ |
88 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 89 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 90 | |
c378eb4e | 91 | /* Functions this file defines. */ |
c906108c | 92 | |
ecf45d2c | 93 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 94 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 95 | |
00b5771c | 96 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 97 | |
a14ed312 | 98 | static void overlay_invalidate_all (void); |
c906108c | 99 | |
a14ed312 | 100 | static void simple_free_overlay_table (void); |
c906108c | 101 | |
e17a4113 UW |
102 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
103 | enum bfd_endian); | |
c906108c | 104 | |
a14ed312 | 105 | static int simple_read_overlay_table (void); |
c906108c | 106 | |
a14ed312 | 107 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 108 | |
31d99776 DJ |
109 | static void symfile_find_segment_sections (struct objfile *objfile); |
110 | ||
c906108c SS |
111 | /* List of all available sym_fns. On gdb startup, each object file reader |
112 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 113 | prepared to read. */ |
c906108c | 114 | |
905014d7 | 115 | struct registered_sym_fns |
c256e171 | 116 | { |
905014d7 SM |
117 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
118 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
119 | {} | |
120 | ||
c256e171 DE |
121 | /* BFD flavour that we handle. */ |
122 | enum bfd_flavour sym_flavour; | |
123 | ||
124 | /* The "vtable" of symbol functions. */ | |
125 | const struct sym_fns *sym_fns; | |
905014d7 | 126 | }; |
c256e171 | 127 | |
905014d7 | 128 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 129 | |
770e7fc7 DE |
130 | /* Values for "set print symbol-loading". */ |
131 | ||
132 | const char print_symbol_loading_off[] = "off"; | |
133 | const char print_symbol_loading_brief[] = "brief"; | |
134 | const char print_symbol_loading_full[] = "full"; | |
135 | static const char *print_symbol_loading_enums[] = | |
136 | { | |
137 | print_symbol_loading_off, | |
138 | print_symbol_loading_brief, | |
139 | print_symbol_loading_full, | |
140 | NULL | |
141 | }; | |
142 | static const char *print_symbol_loading = print_symbol_loading_full; | |
143 | ||
f2f24aa9 | 144 | /* See symfile.h. */ |
c906108c | 145 | |
491144b5 | 146 | bool auto_solib_add = true; |
c906108c | 147 | \f |
c5aa993b | 148 | |
770e7fc7 DE |
149 | /* Return non-zero if symbol-loading messages should be printed. |
150 | FROM_TTY is the standard from_tty argument to gdb commands. | |
151 | If EXEC is non-zero the messages are for the executable. | |
152 | Otherwise, messages are for shared libraries. | |
153 | If FULL is non-zero then the caller is printing a detailed message. | |
154 | E.g., the message includes the shared library name. | |
155 | Otherwise, the caller is printing a brief "summary" message. */ | |
156 | ||
157 | int | |
158 | print_symbol_loading_p (int from_tty, int exec, int full) | |
159 | { | |
160 | if (!from_tty && !info_verbose) | |
161 | return 0; | |
162 | ||
163 | if (exec) | |
164 | { | |
165 | /* We don't check FULL for executables, there are few such | |
166 | messages, therefore brief == full. */ | |
167 | return print_symbol_loading != print_symbol_loading_off; | |
168 | } | |
169 | if (full) | |
170 | return print_symbol_loading == print_symbol_loading_full; | |
171 | return print_symbol_loading == print_symbol_loading_brief; | |
172 | } | |
173 | ||
0d14a781 | 174 | /* True if we are reading a symbol table. */ |
c906108c SS |
175 | |
176 | int currently_reading_symtab = 0; | |
177 | ||
ccefe4c4 TT |
178 | /* Increment currently_reading_symtab and return a cleanup that can be |
179 | used to decrement it. */ | |
3b7bacac | 180 | |
c83dd867 | 181 | scoped_restore_tmpl<int> |
ccefe4c4 | 182 | increment_reading_symtab (void) |
c906108c | 183 | { |
c83dd867 TT |
184 | gdb_assert (currently_reading_symtab >= 0); |
185 | return make_scoped_restore (¤tly_reading_symtab, | |
186 | currently_reading_symtab + 1); | |
c906108c SS |
187 | } |
188 | ||
5417f6dc | 189 | /* Remember the lowest-addressed loadable section we've seen. |
c906108c SS |
190 | |
191 | In case of equal vmas, the section with the largest size becomes the | |
192 | lowest-addressed loadable section. | |
193 | ||
194 | If the vmas and sizes are equal, the last section is considered the | |
195 | lowest-addressed loadable section. */ | |
196 | ||
ad7277da TT |
197 | static void |
198 | find_lowest_section (asection *sect, asection **lowest) | |
c906108c | 199 | { |
fd361982 | 200 | if (0 == (bfd_section_flags (sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
201 | return; |
202 | if (!*lowest) | |
203 | *lowest = sect; /* First loadable section */ | |
fd361982 | 204 | else if (bfd_section_vma (*lowest) > bfd_section_vma (sect)) |
c906108c | 205 | *lowest = sect; /* A lower loadable section */ |
fd361982 AM |
206 | else if (bfd_section_vma (*lowest) == bfd_section_vma (sect) |
207 | && (bfd_section_size (*lowest) <= bfd_section_size (sect))) | |
c906108c SS |
208 | *lowest = sect; |
209 | } | |
210 | ||
62557bbc | 211 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 212 | an existing section table. */ |
62557bbc | 213 | |
37e136b1 | 214 | section_addr_info |
0542c86d PA |
215 | build_section_addr_info_from_section_table (const struct target_section *start, |
216 | const struct target_section *end) | |
62557bbc | 217 | { |
0542c86d | 218 | const struct target_section *stp; |
62557bbc | 219 | |
37e136b1 | 220 | section_addr_info sap; |
62557bbc | 221 | |
37e136b1 | 222 | for (stp = start; stp != end; stp++) |
62557bbc | 223 | { |
2b2848e2 DE |
224 | struct bfd_section *asect = stp->the_bfd_section; |
225 | bfd *abfd = asect->owner; | |
226 | ||
fd361982 | 227 | if (bfd_section_flags (asect) & (SEC_ALLOC | SEC_LOAD) |
37e136b1 TT |
228 | && sap.size () < end - start) |
229 | sap.emplace_back (stp->addr, | |
fd361982 | 230 | bfd_section_name (asect), |
37e136b1 | 231 | gdb_bfd_section_index (abfd, asect)); |
62557bbc KB |
232 | } |
233 | ||
234 | return sap; | |
235 | } | |
236 | ||
82ccf5a5 | 237 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 238 | |
37e136b1 | 239 | static section_addr_info |
82ccf5a5 | 240 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 241 | { |
089b4803 TG |
242 | struct bfd_section *sec; |
243 | ||
37e136b1 TT |
244 | section_addr_info sap; |
245 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
fd361982 AM |
246 | if (bfd_section_flags (sec) & (SEC_ALLOC | SEC_LOAD)) |
247 | sap.emplace_back (bfd_section_vma (sec), | |
248 | bfd_section_name (sec), | |
37e136b1 | 249 | gdb_bfd_section_index (abfd, sec)); |
d76488d8 | 250 | |
089b4803 TG |
251 | return sap; |
252 | } | |
253 | ||
82ccf5a5 JK |
254 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
255 | ||
37e136b1 | 256 | section_addr_info |
82ccf5a5 JK |
257 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
258 | { | |
82ccf5a5 JK |
259 | int i; |
260 | ||
261 | /* Before reread_symbols gets rewritten it is not safe to call: | |
262 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
263 | */ | |
37e136b1 TT |
264 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
265 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 266 | { |
37e136b1 | 267 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 268 | |
6a053cb1 | 269 | sap[i].addr += objfile->section_offsets[sectindex]; |
82ccf5a5 JK |
270 | } |
271 | return sap; | |
272 | } | |
62557bbc | 273 | |
e8289572 | 274 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 275 | |
e8289572 JB |
276 | static void |
277 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 278 | { |
e8289572 | 279 | asection *sect; |
c906108c | 280 | int i; |
5417f6dc | 281 | |
b8fbeb18 | 282 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 283 | if (sect) |
b8fbeb18 EZ |
284 | objfile->sect_index_text = sect->index; |
285 | ||
286 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 287 | if (sect) |
b8fbeb18 EZ |
288 | objfile->sect_index_data = sect->index; |
289 | ||
290 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 291 | if (sect) |
b8fbeb18 EZ |
292 | objfile->sect_index_bss = sect->index; |
293 | ||
294 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 295 | if (sect) |
b8fbeb18 EZ |
296 | objfile->sect_index_rodata = sect->index; |
297 | ||
bbcd32ad FF |
298 | /* This is where things get really weird... We MUST have valid |
299 | indices for the various sect_index_* members or gdb will abort. | |
300 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
301 | accomodate that. First, check for a file with the standard |
302 | one or two segments. */ | |
303 | ||
304 | symfile_find_segment_sections (objfile); | |
305 | ||
306 | /* Except when explicitly adding symbol files at some address, | |
307 | section_offsets contains nothing but zeros, so it doesn't matter | |
308 | which slot in section_offsets the individual sect_index_* members | |
309 | index into. So if they are all zero, it is safe to just point | |
310 | all the currently uninitialized indices to the first slot. But | |
311 | beware: if this is the main executable, it may be relocated | |
312 | later, e.g. by the remote qOffsets packet, and then this will | |
313 | be wrong! That's why we try segments first. */ | |
bbcd32ad | 314 | |
6a053cb1 | 315 | for (i = 0; i < objfile->section_offsets.size (); i++) |
bbcd32ad | 316 | { |
6a053cb1 | 317 | if (objfile->section_offsets[i] != 0) |
bbcd32ad FF |
318 | { |
319 | break; | |
320 | } | |
321 | } | |
6a053cb1 | 322 | if (i == objfile->section_offsets.size ()) |
bbcd32ad FF |
323 | { |
324 | if (objfile->sect_index_text == -1) | |
325 | objfile->sect_index_text = 0; | |
326 | if (objfile->sect_index_data == -1) | |
327 | objfile->sect_index_data = 0; | |
328 | if (objfile->sect_index_bss == -1) | |
329 | objfile->sect_index_bss = 0; | |
330 | if (objfile->sect_index_rodata == -1) | |
331 | objfile->sect_index_rodata = 0; | |
332 | } | |
b8fbeb18 | 333 | } |
c906108c | 334 | |
c1bd25fd DJ |
335 | /* Find a unique offset to use for loadable section SECT if |
336 | the user did not provide an offset. */ | |
337 | ||
2c0b251b | 338 | static void |
ad7277da TT |
339 | place_section (bfd *abfd, asection *sect, section_offsets &offsets, |
340 | CORE_ADDR &lowest) | |
c1bd25fd | 341 | { |
6a053cb1 | 342 | CORE_ADDR start_addr; |
c1bd25fd | 343 | int done; |
fd361982 | 344 | ULONGEST align = ((ULONGEST) 1) << bfd_section_alignment (sect); |
c1bd25fd | 345 | |
2711e456 | 346 | /* We are only interested in allocated sections. */ |
fd361982 | 347 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
348 | return; |
349 | ||
350 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 351 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
352 | return; |
353 | ||
354 | /* Otherwise, let's try to find a place for the section. */ | |
ad7277da | 355 | start_addr = (lowest + align - 1) & -align; |
3bd72c6f | 356 | |
c1bd25fd DJ |
357 | do { |
358 | asection *cur_sec; | |
c1bd25fd | 359 | |
c1bd25fd DJ |
360 | done = 1; |
361 | ||
362 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
363 | { | |
364 | int indx = cur_sec->index; | |
c1bd25fd DJ |
365 | |
366 | /* We don't need to compare against ourself. */ | |
367 | if (cur_sec == sect) | |
368 | continue; | |
369 | ||
2711e456 | 370 | /* We can only conflict with allocated sections. */ |
fd361982 | 371 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
372 | continue; |
373 | ||
374 | /* If the section offset is 0, either the section has not been placed | |
375 | yet, or it was the lowest section placed (in which case LOWEST | |
376 | will be past its end). */ | |
377 | if (offsets[indx] == 0) | |
378 | continue; | |
379 | ||
380 | /* If this section would overlap us, then we must move up. */ | |
fd361982 AM |
381 | if (start_addr + bfd_section_size (sect) > offsets[indx] |
382 | && start_addr < offsets[indx] + bfd_section_size (cur_sec)) | |
c1bd25fd | 383 | { |
fd361982 | 384 | start_addr = offsets[indx] + bfd_section_size (cur_sec); |
c1bd25fd DJ |
385 | start_addr = (start_addr + align - 1) & -align; |
386 | done = 0; | |
3bd72c6f | 387 | break; |
c1bd25fd DJ |
388 | } |
389 | ||
390 | /* Otherwise, we appear to be OK. So far. */ | |
391 | } | |
392 | } | |
393 | while (!done); | |
394 | ||
65cf3563 | 395 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
ad7277da | 396 | lowest = start_addr + bfd_section_size (sect); |
c1bd25fd | 397 | } |
e8289572 | 398 | |
4f7ae6f5 | 399 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
6a053cb1 | 400 | filled-in) by addr_info_make_relative into SECTION_OFFSETS. */ |
e8289572 JB |
401 | |
402 | void | |
6a053cb1 | 403 | relative_addr_info_to_section_offsets (section_offsets §ion_offsets, |
37e136b1 | 404 | const section_addr_info &addrs) |
e8289572 JB |
405 | { |
406 | int i; | |
407 | ||
6a053cb1 | 408 | section_offsets.assign (section_offsets.size (), 0); |
e8289572 | 409 | |
c378eb4e | 410 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 411 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 412 | { |
3189cb12 | 413 | const struct other_sections *osp; |
e8289572 | 414 | |
37e136b1 | 415 | osp = &addrs[i]; |
5488dafb | 416 | if (osp->sectindex == -1) |
e8289572 JB |
417 | continue; |
418 | ||
c378eb4e | 419 | /* Record all sections in offsets. */ |
e8289572 | 420 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 421 | the BFD index. */ |
6a053cb1 | 422 | section_offsets[osp->sectindex] = osp->addr; |
75242ef4 JK |
423 | } |
424 | } | |
425 | ||
1276c759 JK |
426 | /* Transform section name S for a name comparison. prelink can split section |
427 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
428 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
429 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
430 | (`.sbss') section has invalid (increased) virtual address. */ | |
431 | ||
432 | static const char * | |
433 | addr_section_name (const char *s) | |
434 | { | |
435 | if (strcmp (s, ".dynbss") == 0) | |
436 | return ".bss"; | |
437 | if (strcmp (s, ".sdynbss") == 0) | |
438 | return ".sbss"; | |
439 | ||
440 | return s; | |
441 | } | |
442 | ||
37e136b1 TT |
443 | /* std::sort comparator for addrs_section_sort. Sort entries in |
444 | ascending order by their (name, sectindex) pair. sectindex makes | |
445 | the sort by name stable. */ | |
82ccf5a5 | 446 | |
37e136b1 TT |
447 | static bool |
448 | addrs_section_compar (const struct other_sections *a, | |
449 | const struct other_sections *b) | |
82ccf5a5 | 450 | { |
22e048c9 | 451 | int retval; |
82ccf5a5 | 452 | |
37e136b1 TT |
453 | retval = strcmp (addr_section_name (a->name.c_str ()), |
454 | addr_section_name (b->name.c_str ())); | |
455 | if (retval != 0) | |
456 | return retval < 0; | |
82ccf5a5 | 457 | |
37e136b1 | 458 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
459 | } |
460 | ||
37e136b1 | 461 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 462 | |
37e136b1 TT |
463 | static std::vector<const struct other_sections *> |
464 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 465 | { |
82ccf5a5 JK |
466 | int i; |
467 | ||
37e136b1 TT |
468 | std::vector<const struct other_sections *> array (addrs.size ()); |
469 | for (i = 0; i < addrs.size (); i++) | |
470 | array[i] = &addrs[i]; | |
82ccf5a5 | 471 | |
37e136b1 | 472 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
473 | |
474 | return array; | |
475 | } | |
476 | ||
75242ef4 | 477 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
478 | also SECTINDEXes specific to ABFD there. This function can be used to |
479 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
480 | |
481 | void | |
37e136b1 | 482 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
483 | { |
484 | asection *lower_sect; | |
75242ef4 JK |
485 | CORE_ADDR lower_offset; |
486 | int i; | |
487 | ||
488 | /* Find lowest loadable section to be used as starting point for | |
85102364 | 489 | contiguous sections. */ |
e76ab67f | 490 | lower_sect = NULL; |
ad7277da TT |
491 | for (asection *iter : gdb_bfd_sections (abfd)) |
492 | find_lowest_section (iter, &lower_sect); | |
75242ef4 JK |
493 | if (lower_sect == NULL) |
494 | { | |
495 | warning (_("no loadable sections found in added symbol-file %s"), | |
496 | bfd_get_filename (abfd)); | |
497 | lower_offset = 0; | |
e8289572 | 498 | } |
75242ef4 | 499 | else |
fd361982 | 500 | lower_offset = bfd_section_vma (lower_sect); |
75242ef4 | 501 | |
82ccf5a5 JK |
502 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
503 | in ABFD. Section names are not unique - there can be multiple sections of | |
504 | the same name. Also the sections of the same name do not have to be | |
505 | adjacent to each other. Some sections may be present only in one of the | |
506 | files. Even sections present in both files do not have to be in the same | |
507 | order. | |
508 | ||
509 | Use stable sort by name for the sections in both files. Then linearly | |
510 | scan both lists matching as most of the entries as possible. */ | |
511 | ||
37e136b1 TT |
512 | std::vector<const struct other_sections *> addrs_sorted |
513 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 514 | |
37e136b1 TT |
515 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
516 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
517 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 518 | |
c378eb4e MS |
519 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
520 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 521 | |
37e136b1 TT |
522 | std::vector<const struct other_sections *> |
523 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 524 | |
37e136b1 TT |
525 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
526 | = abfd_addrs_sorted.begin (); | |
52941706 | 527 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 528 | { |
37e136b1 | 529 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 530 | |
37e136b1 TT |
531 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
532 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 533 | sect_name) < 0) |
37e136b1 | 534 | abfd_sorted_iter++; |
82ccf5a5 | 535 | |
37e136b1 TT |
536 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
537 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 538 | sect_name) == 0) |
82ccf5a5 JK |
539 | { |
540 | int index_in_addrs; | |
541 | ||
542 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 543 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 544 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 545 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
546 | |
547 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 548 | abfd_sorted_iter++; |
82ccf5a5 | 549 | } |
82ccf5a5 JK |
550 | } |
551 | ||
75242ef4 JK |
552 | /* Calculate offsets for the loadable sections. |
553 | FIXME! Sections must be in order of increasing loadable section | |
554 | so that contiguous sections can use the lower-offset!!! | |
555 | ||
556 | Adjust offsets if the segments are not contiguous. | |
557 | If the section is contiguous, its offset should be set to | |
558 | the offset of the highest loadable section lower than it | |
559 | (the loadable section directly below it in memory). | |
560 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
561 | ||
37e136b1 | 562 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 563 | { |
37e136b1 | 564 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
565 | |
566 | if (sect) | |
75242ef4 | 567 | { |
c378eb4e | 568 | /* This is the index used by BFD. */ |
37e136b1 | 569 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 570 | |
37e136b1 | 571 | if ((*addrs)[i].addr != 0) |
75242ef4 | 572 | { |
37e136b1 TT |
573 | (*addrs)[i].addr -= sect->addr; |
574 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
575 | } |
576 | else | |
37e136b1 | 577 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
578 | } |
579 | else | |
672d9c23 | 580 | { |
1276c759 | 581 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 582 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 583 | |
b0fcb67f JK |
584 | /* This section does not exist in ABFD, which is normally |
585 | unexpected and we want to issue a warning. | |
586 | ||
4d9743af JK |
587 | However, the ELF prelinker does create a few sections which are |
588 | marked in the main executable as loadable (they are loaded in | |
589 | memory from the DYNAMIC segment) and yet are not present in | |
590 | separate debug info files. This is fine, and should not cause | |
591 | a warning. Shared libraries contain just the section | |
592 | ".gnu.liblist" but it is not marked as loadable there. There is | |
593 | no other way to identify them than by their name as the sections | |
1276c759 JK |
594 | created by prelink have no special flags. |
595 | ||
596 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 597 | |
37e136b1 TT |
598 | if (!(sect_name == ".gnu.liblist" |
599 | || sect_name == ".gnu.conflict" | |
600 | || (sect_name == ".bss" | |
1276c759 | 601 | && i > 0 |
37e136b1 | 602 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 603 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 604 | || (sect_name == ".sbss" |
1276c759 | 605 | && i > 0 |
37e136b1 | 606 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 607 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 608 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
609 | bfd_get_filename (abfd)); |
610 | ||
37e136b1 TT |
611 | (*addrs)[i].addr = 0; |
612 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 613 | } |
75242ef4 JK |
614 | } |
615 | } | |
616 | ||
617 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
618 | of how to represent it for fast symbol reading. This is the default | |
619 | version of the sym_fns.sym_offsets function for symbol readers that | |
620 | don't need to do anything special. It allocates a section_offsets table | |
621 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
622 | ||
623 | void | |
624 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 625 | const section_addr_info &addrs) |
75242ef4 | 626 | { |
6a053cb1 TT |
627 | objfile->section_offsets.resize (gdb_bfd_count_sections (objfile->obfd)); |
628 | relative_addr_info_to_section_offsets (objfile->section_offsets, addrs); | |
e8289572 | 629 | |
c1bd25fd DJ |
630 | /* For relocatable files, all loadable sections will start at zero. |
631 | The zero is meaningless, so try to pick arbitrary addresses such | |
632 | that no loadable sections overlap. This algorithm is quadratic, | |
633 | but the number of sections in a single object file is generally | |
634 | small. */ | |
635 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
636 | { | |
2711e456 DJ |
637 | bfd *abfd = objfile->obfd; |
638 | asection *cur_sec; | |
2711e456 DJ |
639 | |
640 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
641 | /* We do not expect this to happen; just skip this step if the | |
642 | relocatable file has a section with an assigned VMA. */ | |
fd361982 | 643 | if (bfd_section_vma (cur_sec) != 0) |
2711e456 DJ |
644 | break; |
645 | ||
646 | if (cur_sec == NULL) | |
647 | { | |
6a053cb1 | 648 | section_offsets &offsets = objfile->section_offsets; |
2711e456 DJ |
649 | |
650 | /* Pick non-overlapping offsets for sections the user did not | |
651 | place explicitly. */ | |
ad7277da TT |
652 | CORE_ADDR lowest = 0; |
653 | for (asection *sect : gdb_bfd_sections (objfile->obfd)) | |
654 | place_section (objfile->obfd, sect, objfile->section_offsets, | |
655 | lowest); | |
2711e456 DJ |
656 | |
657 | /* Correctly filling in the section offsets is not quite | |
658 | enough. Relocatable files have two properties that | |
659 | (most) shared objects do not: | |
660 | ||
661 | - Their debug information will contain relocations. Some | |
662 | shared libraries do also, but many do not, so this can not | |
663 | be assumed. | |
664 | ||
665 | - If there are multiple code sections they will be loaded | |
666 | at different relative addresses in memory than they are | |
667 | in the objfile, since all sections in the file will start | |
668 | at address zero. | |
669 | ||
670 | Because GDB has very limited ability to map from an | |
671 | address in debug info to the correct code section, | |
672 | it relies on adding SECT_OFF_TEXT to things which might be | |
673 | code. If we clear all the section offsets, and set the | |
674 | section VMAs instead, then symfile_relocate_debug_section | |
675 | will return meaningful debug information pointing at the | |
676 | correct sections. | |
677 | ||
678 | GDB has too many different data structures for section | |
679 | addresses - a bfd, objfile, and so_list all have section | |
680 | tables, as does exec_ops. Some of these could probably | |
681 | be eliminated. */ | |
682 | ||
683 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
684 | cur_sec = cur_sec->next) | |
685 | { | |
fd361982 | 686 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
2711e456 DJ |
687 | continue; |
688 | ||
fd361982 | 689 | bfd_set_section_vma (cur_sec, offsets[cur_sec->index]); |
3e43a32a MS |
690 | exec_set_section_address (bfd_get_filename (abfd), |
691 | cur_sec->index, | |
30510692 | 692 | offsets[cur_sec->index]); |
2711e456 DJ |
693 | offsets[cur_sec->index] = 0; |
694 | } | |
695 | } | |
c1bd25fd DJ |
696 | } |
697 | ||
e8289572 | 698 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 699 | .rodata sections. */ |
e8289572 JB |
700 | init_objfile_sect_indices (objfile); |
701 | } | |
702 | ||
31d99776 DJ |
703 | /* Divide the file into segments, which are individual relocatable units. |
704 | This is the default version of the sym_fns.sym_segments function for | |
705 | symbol readers that do not have an explicit representation of segments. | |
706 | It assumes that object files do not have segments, and fully linked | |
707 | files have a single segment. */ | |
708 | ||
62982abd | 709 | symfile_segment_data_up |
31d99776 DJ |
710 | default_symfile_segments (bfd *abfd) |
711 | { | |
712 | int num_sections, i; | |
713 | asection *sect; | |
31d99776 DJ |
714 | CORE_ADDR low, high; |
715 | ||
716 | /* Relocatable files contain enough information to position each | |
717 | loadable section independently; they should not be relocated | |
718 | in segments. */ | |
719 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
720 | return NULL; | |
721 | ||
722 | /* Make sure there is at least one loadable section in the file. */ | |
723 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
724 | { | |
fd361982 | 725 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
726 | continue; |
727 | ||
728 | break; | |
729 | } | |
730 | if (sect == NULL) | |
731 | return NULL; | |
732 | ||
fd361982 AM |
733 | low = bfd_section_vma (sect); |
734 | high = low + bfd_section_size (sect); | |
31d99776 | 735 | |
62982abd | 736 | symfile_segment_data_up data (new symfile_segment_data); |
31d99776 DJ |
737 | |
738 | num_sections = bfd_count_sections (abfd); | |
9005fbbb SM |
739 | |
740 | /* All elements are initialized to 0 (map to no segment). */ | |
741 | data->segment_info.resize (num_sections); | |
31d99776 DJ |
742 | |
743 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
744 | { | |
745 | CORE_ADDR vma; | |
746 | ||
fd361982 | 747 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
748 | continue; |
749 | ||
fd361982 | 750 | vma = bfd_section_vma (sect); |
31d99776 DJ |
751 | if (vma < low) |
752 | low = vma; | |
fd361982 AM |
753 | if (vma + bfd_section_size (sect) > high) |
754 | high = vma + bfd_section_size (sect); | |
31d99776 DJ |
755 | |
756 | data->segment_info[i] = 1; | |
757 | } | |
758 | ||
68b888ff | 759 | data->segments.emplace_back (low, high - low); |
31d99776 DJ |
760 | |
761 | return data; | |
762 | } | |
763 | ||
608e2dbb TT |
764 | /* This is a convenience function to call sym_read for OBJFILE and |
765 | possibly force the partial symbols to be read. */ | |
766 | ||
767 | static void | |
b15cc25c | 768 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
769 | { |
770 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 771 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
772 | |
773 | /* find_separate_debug_file_in_section should be called only if there is | |
774 | single binary with no existing separate debug info file. */ | |
775 | if (!objfile_has_partial_symbols (objfile) | |
776 | && objfile->separate_debug_objfile == NULL | |
777 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 778 | { |
192b62ce | 779 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
780 | |
781 | if (abfd != NULL) | |
24ba069a JK |
782 | { |
783 | /* find_separate_debug_file_in_section uses the same filename for the | |
784 | virtual section-as-bfd like the bfd filename containing the | |
785 | section. Therefore use also non-canonical name form for the same | |
786 | file containing the section. */ | |
921222e2 TT |
787 | symbol_file_add_separate (abfd.get (), |
788 | bfd_get_filename (abfd.get ()), | |
789 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 790 | } |
608e2dbb TT |
791 | } |
792 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
26abc753 | 793 | require_partial_symbols (objfile, false); |
608e2dbb TT |
794 | } |
795 | ||
3d6e24f0 JB |
796 | /* Initialize entry point information for this objfile. */ |
797 | ||
798 | static void | |
799 | init_entry_point_info (struct objfile *objfile) | |
800 | { | |
6ef55de7 TT |
801 | struct entry_info *ei = &objfile->per_bfd->ei; |
802 | ||
803 | if (ei->initialized) | |
804 | return; | |
805 | ei->initialized = 1; | |
806 | ||
3d6e24f0 JB |
807 | /* Save startup file's range of PC addresses to help blockframe.c |
808 | decide where the bottom of the stack is. */ | |
809 | ||
810 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
811 | { | |
812 | /* Executable file -- record its entry point so we'll recognize | |
813 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
814 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
815 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
816 | } |
817 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
818 | && bfd_get_start_address (objfile->obfd) != 0) | |
819 | { | |
820 | /* Some shared libraries may have entry points set and be | |
821 | runnable. There's no clear way to indicate this, so just check | |
822 | for values other than zero. */ | |
6ef55de7 TT |
823 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
824 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
825 | } |
826 | else | |
827 | { | |
828 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 829 | ei->entry_point_p = 0; |
3d6e24f0 JB |
830 | } |
831 | ||
6ef55de7 | 832 | if (ei->entry_point_p) |
3d6e24f0 | 833 | { |
53eddfa6 | 834 | struct obj_section *osect; |
6ef55de7 | 835 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 836 | int found; |
3d6e24f0 JB |
837 | |
838 | /* Make certain that the address points at real code, and not a | |
839 | function descriptor. */ | |
840 | entry_point | |
08feed99 | 841 | = gdbarch_convert_from_func_ptr_addr (objfile->arch (), |
3d6e24f0 | 842 | entry_point, |
8b88a78e | 843 | current_top_target ()); |
3d6e24f0 JB |
844 | |
845 | /* Remove any ISA markers, so that this matches entries in the | |
846 | symbol table. */ | |
6ef55de7 | 847 | ei->entry_point |
08feed99 | 848 | = gdbarch_addr_bits_remove (objfile->arch (), entry_point); |
53eddfa6 TT |
849 | |
850 | found = 0; | |
851 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
852 | { | |
853 | struct bfd_section *sect = osect->the_bfd_section; | |
854 | ||
fd361982 AM |
855 | if (entry_point >= bfd_section_vma (sect) |
856 | && entry_point < (bfd_section_vma (sect) | |
857 | + bfd_section_size (sect))) | |
53eddfa6 | 858 | { |
6ef55de7 | 859 | ei->the_bfd_section_index |
53eddfa6 TT |
860 | = gdb_bfd_section_index (objfile->obfd, sect); |
861 | found = 1; | |
862 | break; | |
863 | } | |
864 | } | |
865 | ||
866 | if (!found) | |
6ef55de7 | 867 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
868 | } |
869 | } | |
870 | ||
c906108c SS |
871 | /* Process a symbol file, as either the main file or as a dynamically |
872 | loaded file. | |
873 | ||
36e4d068 JB |
874 | This function does not set the OBJFILE's entry-point info. |
875 | ||
96baa820 JM |
876 | OBJFILE is where the symbols are to be read from. |
877 | ||
7e8580c1 JB |
878 | ADDRS is the list of section load addresses. If the user has given |
879 | an 'add-symbol-file' command, then this is the list of offsets and | |
880 | addresses he or she provided as arguments to the command; or, if | |
881 | we're handling a shared library, these are the actual addresses the | |
882 | sections are loaded at, according to the inferior's dynamic linker | |
883 | (as gleaned by GDB's shared library code). We convert each address | |
884 | into an offset from the section VMA's as it appears in the object | |
885 | file, and then call the file's sym_offsets function to convert this | |
6a053cb1 | 886 | into a format-specific offset table --- a `section_offsets'. |
d81a3eaf PT |
887 | The sectindex field is used to control the ordering of sections |
888 | with the same name. Upon return, it is updated to contain the | |
85102364 | 889 | corresponding BFD section index, or -1 if the section was not found. |
96baa820 | 890 | |
7eedccfa | 891 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
f71433ee | 892 | an extra symbol file such as dynamically loaded code, and whether |
7eedccfa | 893 | breakpoint reset should be deferred. */ |
c906108c | 894 | |
36e4d068 JB |
895 | static void |
896 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 897 | section_addr_info *addrs, |
b15cc25c | 898 | symfile_add_flags add_flags) |
c906108c | 899 | { |
37e136b1 | 900 | section_addr_info local_addr; |
7eedccfa | 901 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 902 | |
8fb8eb5c | 903 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 904 | |
75245b24 | 905 | if (objfile->sf == NULL) |
36e4d068 JB |
906 | { |
907 | /* No symbols to load, but we still need to make sure | |
908 | that the section_offsets table is allocated. */ | |
d445b2f6 | 909 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
36e4d068 | 910 | |
6a053cb1 | 911 | objfile->section_offsets.assign (num_sections, 0); |
36e4d068 JB |
912 | return; |
913 | } | |
75245b24 | 914 | |
c906108c SS |
915 | /* Make sure that partially constructed symbol tables will be cleaned up |
916 | if an error occurs during symbol reading. */ | |
286526c1 TT |
917 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
918 | ||
268e4f09 | 919 | objfile_up objfile_holder (objfile); |
c906108c | 920 | |
6bf667bb DE |
921 | /* If ADDRS is NULL, put together a dummy address list. |
922 | We now establish the convention that an addr of zero means | |
c378eb4e | 923 | no load address was specified. */ |
6bf667bb | 924 | if (! addrs) |
37e136b1 | 925 | addrs = &local_addr; |
a39a16c4 | 926 | |
c5aa993b | 927 | if (mainline) |
c906108c SS |
928 | { |
929 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 930 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 931 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
932 | |
933 | /* Since no error yet, throw away the old symbol table. */ | |
934 | ||
935 | if (symfile_objfile != NULL) | |
936 | { | |
268e4f09 | 937 | symfile_objfile->unlink (); |
adb7f338 | 938 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
939 | } |
940 | ||
941 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
942 | If the user wants to get rid of them, they should do "symbol-file" |
943 | without arguments first. Not sure this is the best behavior | |
944 | (PR 2207). */ | |
c906108c | 945 | |
c5aa993b | 946 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
947 | } |
948 | ||
949 | /* Convert addr into an offset rather than an absolute address. | |
950 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 951 | and assume that <addr> is where that got loaded. |
c906108c | 952 | |
53a5351d JM |
953 | We no longer warn if the lowest section is not a text segment (as |
954 | happens for the PA64 port. */ | |
37e136b1 | 955 | if (addrs->size () > 0) |
75242ef4 | 956 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
957 | |
958 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
959 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 960 | initial symbol reading for this file. */ |
c906108c | 961 | |
c5aa993b | 962 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 963 | clear_complaints (); |
c906108c | 964 | |
37e136b1 | 965 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 966 | |
608e2dbb | 967 | read_symbols (objfile, add_flags); |
b11896a5 | 968 | |
c906108c SS |
969 | /* Discard cleanups as symbol reading was successful. */ |
970 | ||
ed2b3126 | 971 | objfile_holder.release (); |
286526c1 TT |
972 | if (defer_clear_users) |
973 | defer_clear_users->release (); | |
c906108c SS |
974 | } |
975 | ||
36e4d068 JB |
976 | /* Same as syms_from_objfile_1, but also initializes the objfile |
977 | entry-point info. */ | |
978 | ||
6bf667bb | 979 | static void |
36e4d068 | 980 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 981 | section_addr_info *addrs, |
b15cc25c | 982 | symfile_add_flags add_flags) |
36e4d068 | 983 | { |
6bf667bb | 984 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
985 | init_entry_point_info (objfile); |
986 | } | |
987 | ||
c906108c SS |
988 | /* Perform required actions after either reading in the initial |
989 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 990 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 991 | |
e7d52ed3 | 992 | static void |
b15cc25c | 993 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 994 | { |
c906108c | 995 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 996 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 997 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 998 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
999 | { |
1000 | /* OK, make it the "real" symbol file. */ | |
1001 | symfile_objfile = objfile; | |
1002 | ||
c1e56572 | 1003 | clear_symtab_users (add_flags); |
c906108c | 1004 | } |
7eedccfa | 1005 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1006 | { |
69de3c6a | 1007 | breakpoint_re_set (); |
c906108c SS |
1008 | } |
1009 | ||
1010 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1011 | clear_complaints (); |
c906108c SS |
1012 | } |
1013 | ||
1014 | /* Process a symbol file, as either the main file or as a dynamically | |
1015 | loaded file. | |
1016 | ||
5417f6dc | 1017 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1018 | A new reference is acquired by this function. |
7904e09f | 1019 | |
9e86da07 | 1020 | For NAME description see the objfile constructor. |
24ba069a | 1021 | |
7eedccfa | 1022 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
30baf67b | 1023 | extra, such as dynamically loaded code, and what to do with breakpoints. |
7904e09f | 1024 | |
6bf667bb | 1025 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1026 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1027 | |
63524580 JK |
1028 | PARENT is the original objfile if ABFD is a separate debug info file. |
1029 | Otherwise PARENT is NULL. | |
1030 | ||
c906108c | 1031 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1032 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1033 | |
7904e09f | 1034 | static struct objfile * |
b15cc25c PA |
1035 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1036 | symfile_add_flags add_flags, | |
37e136b1 | 1037 | section_addr_info *addrs, |
b15cc25c | 1038 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1039 | { |
1040 | struct objfile *objfile; | |
7eedccfa | 1041 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1042 | const int mainline = add_flags & SYMFILE_MAINLINE; |
a8654e7d | 1043 | const int always_confirm = add_flags & SYMFILE_ALWAYS_CONFIRM; |
770e7fc7 | 1044 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1045 | && (readnow_symbol_files |
1046 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1047 | |
9291a0cd | 1048 | if (readnow_symbol_files) |
b11896a5 TT |
1049 | { |
1050 | flags |= OBJF_READNOW; | |
1051 | add_flags &= ~SYMFILE_NO_READ; | |
1052 | } | |
97cbe998 SDJ |
1053 | else if (readnever_symbol_files |
1054 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1055 | { | |
1056 | flags |= OBJF_READNEVER; | |
1057 | add_flags |= SYMFILE_NO_READ; | |
1058 | } | |
921222e2 TT |
1059 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1060 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1061 | |
a8654e7d | 1062 | /* Give user a chance to burp if ALWAYS_CONFIRM or we'd be |
5417f6dc | 1063 | interactively wiping out any existing symbols. */ |
c906108c | 1064 | |
a8654e7d PW |
1065 | if (from_tty |
1066 | && (always_confirm | |
1067 | || ((have_full_symbols () || have_partial_symbols ()) | |
1068 | && mainline)) | |
9e2f0ad4 | 1069 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1070 | error (_("Not confirmed.")); |
c906108c | 1071 | |
b15cc25c PA |
1072 | if (mainline) |
1073 | flags |= OBJF_MAINLINE; | |
f65fe570 | 1074 | objfile = objfile::make (abfd, name, flags, parent); |
63524580 | 1075 | |
78a4a9b9 AC |
1076 | /* We either created a new mapped symbol table, mapped an existing |
1077 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1078 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1079 | if (should_print) |
c906108c | 1080 | { |
769d7dc4 AC |
1081 | if (deprecated_pre_add_symbol_hook) |
1082 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1083 | else |
6a831f06 PA |
1084 | printf_filtered (_("Reading symbols from %ps...\n"), |
1085 | styled_string (file_name_style.style (), name)); | |
c906108c | 1086 | } |
6bf667bb | 1087 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1088 | |
1089 | /* We now have at least a partial symbol table. Check to see if the | |
1090 | user requested that all symbols be read on initial access via either | |
1091 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1092 | all partial symbol tables for this objfile if so. */ |
c906108c | 1093 | |
9291a0cd | 1094 | if ((flags & OBJF_READNOW)) |
c906108c | 1095 | { |
b11896a5 | 1096 | if (should_print) |
6a831f06 PA |
1097 | printf_filtered (_("Expanding full symbols from %ps...\n"), |
1098 | styled_string (file_name_style.style (), name)); | |
c906108c | 1099 | |
ccefe4c4 TT |
1100 | if (objfile->sf) |
1101 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1102 | } |
1103 | ||
e79497a1 TT |
1104 | /* Note that we only print a message if we have no symbols and have |
1105 | no separate debug file. If there is a separate debug file which | |
1106 | does not have symbols, we'll have emitted this message for that | |
1107 | file, and so printing it twice is just redundant. */ | |
1108 | if (should_print && !objfile_has_symbols (objfile) | |
1109 | && objfile->separate_debug_objfile == nullptr) | |
6a831f06 PA |
1110 | printf_filtered (_("(No debugging symbols found in %ps)\n"), |
1111 | styled_string (file_name_style.style (), name)); | |
cb3c37b2 | 1112 | |
b11896a5 | 1113 | if (should_print) |
c906108c | 1114 | { |
769d7dc4 AC |
1115 | if (deprecated_post_add_symbol_hook) |
1116 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1117 | } |
1118 | ||
481d0f41 JB |
1119 | /* We print some messages regardless of whether 'from_tty || |
1120 | info_verbose' is true, so make sure they go out at the right | |
1121 | time. */ | |
1122 | gdb_flush (gdb_stdout); | |
1123 | ||
109f874e | 1124 | if (objfile->sf == NULL) |
8caee43b | 1125 | { |
76727919 | 1126 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1127 | return objfile; /* No symbols. */ |
8caee43b | 1128 | } |
109f874e | 1129 | |
e7d52ed3 | 1130 | finish_new_objfile (objfile, add_flags); |
c906108c | 1131 | |
76727919 | 1132 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1133 | |
ce7d4522 | 1134 | bfd_cache_close_all (); |
c906108c SS |
1135 | return (objfile); |
1136 | } | |
1137 | ||
24ba069a | 1138 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1139 | see the objfile constructor. */ |
9cce227f TG |
1140 | |
1141 | void | |
b15cc25c PA |
1142 | symbol_file_add_separate (bfd *bfd, const char *name, |
1143 | symfile_add_flags symfile_flags, | |
24ba069a | 1144 | struct objfile *objfile) |
9cce227f | 1145 | { |
089b4803 TG |
1146 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1147 | because sections of BFD may not match sections of OBJFILE and because | |
1148 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1149 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1150 | |
870f88f7 | 1151 | symbol_file_add_with_addrs |
37e136b1 | 1152 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1153 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
0c4311ab | 1154 | | OBJF_USERLOADED | OBJF_MAINLINE), |
63524580 | 1155 | objfile); |
9cce227f | 1156 | } |
7904e09f | 1157 | |
eb4556d7 JB |
1158 | /* Process the symbol file ABFD, as either the main file or as a |
1159 | dynamically loaded file. | |
6bf667bb | 1160 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1161 | |
eb4556d7 | 1162 | struct objfile * |
b15cc25c PA |
1163 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1164 | symfile_add_flags add_flags, | |
37e136b1 | 1165 | section_addr_info *addrs, |
b15cc25c | 1166 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1167 | { |
24ba069a JK |
1168 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1169 | parent); | |
eb4556d7 JB |
1170 | } |
1171 | ||
7904e09f | 1172 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1173 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1174 | |
7904e09f | 1175 | struct objfile * |
b15cc25c | 1176 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1177 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1178 | { |
192b62ce | 1179 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1180 | |
192b62ce TT |
1181 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1182 | flags, NULL); | |
7904e09f JB |
1183 | } |
1184 | ||
d7db6da9 FN |
1185 | /* Call symbol_file_add() with default values and update whatever is |
1186 | affected by the loading of a new main(). | |
1187 | Used when the file is supplied in the gdb command line | |
1188 | and by some targets with special loading requirements. | |
1189 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1190 | argument for the switches that can only be specified in the symbol_file | |
1191 | command itself. */ | |
5417f6dc | 1192 | |
1adeb98a | 1193 | void |
ecf45d2c | 1194 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1195 | { |
d4d429d5 | 1196 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1197 | } |
1198 | ||
1199 | static void | |
ecf45d2c | 1200 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1201 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1202 | { |
ecf45d2c | 1203 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1204 | |
d4d429d5 PT |
1205 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1206 | if (reloff != 0) | |
1207 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1208 | |
d7db6da9 FN |
1209 | /* Getting new symbols may change our opinion about |
1210 | what is frameless. */ | |
1211 | reinit_frame_cache (); | |
1212 | ||
b15cc25c | 1213 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1214 | set_initial_language (); |
1adeb98a FN |
1215 | } |
1216 | ||
1217 | void | |
1218 | symbol_file_clear (int from_tty) | |
1219 | { | |
1220 | if ((have_full_symbols () || have_partial_symbols ()) | |
1221 | && from_tty | |
0430b0d6 AS |
1222 | && (symfile_objfile |
1223 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1224 | objfile_name (symfile_objfile)) |
0430b0d6 | 1225 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1226 | error (_("Not confirmed.")); |
1adeb98a | 1227 | |
0133421a JK |
1228 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1229 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1230 | no_shared_libraries (NULL, from_tty); |
1231 | ||
343cc952 | 1232 | current_program_space->free_all_objfiles (); |
0133421a | 1233 | |
f3c469b9 PA |
1234 | clear_symtab_users (0); |
1235 | ||
adb7f338 | 1236 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1237 | if (from_tty) |
22068491 | 1238 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1239 | } |
1240 | ||
c4dcb155 SM |
1241 | /* See symfile.h. */ |
1242 | ||
491144b5 | 1243 | bool separate_debug_file_debug = false; |
c4dcb155 | 1244 | |
5b5d99cf | 1245 | static int |
a8dbfd58 | 1246 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1247 | struct objfile *parent_objfile) |
5b5d99cf | 1248 | { |
904578ed JK |
1249 | unsigned long file_crc; |
1250 | int file_crc_p; | |
32a0e547 | 1251 | struct stat parent_stat, abfd_stat; |
904578ed | 1252 | int verified_as_different; |
32a0e547 JK |
1253 | |
1254 | /* Find a separate debug info file as if symbols would be present in | |
1255 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1256 | section can contain just the basename of PARENT_OBJFILE without any | |
1257 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1258 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1259 | |
a8dbfd58 | 1260 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1261 | return 0; |
5b5d99cf | 1262 | |
c4dcb155 | 1263 | if (separate_debug_file_debug) |
50794b45 SM |
1264 | { |
1265 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1266 | gdb_flush (gdb_stdout); | |
1267 | } | |
c4dcb155 | 1268 | |
ad80db5b | 1269 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget)); |
f1838a98 | 1270 | |
192b62ce | 1271 | if (abfd == NULL) |
50794b45 SM |
1272 | { |
1273 | if (separate_debug_file_debug) | |
1274 | printf_filtered (_(" no, unable to open.\n")); | |
1275 | ||
1276 | return 0; | |
1277 | } | |
5b5d99cf | 1278 | |
0ba1096a | 1279 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1280 | |
1281 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1282 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1283 | meaningful st_dev.) Files accessed from gdbservers that do not |
1284 | support the vFile:fstat packet will also have st_ino set to zero. | |
1285 | Do not indicate a duplicate library in either case. While there | |
1286 | is no guarantee that a system that provides meaningful inode | |
1287 | numbers will never set st_ino to zero, this is merely an | |
1288 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1289 | |
192b62ce | 1290 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1291 | && abfd_stat.st_ino != 0 |
1292 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1293 | { |
904578ed JK |
1294 | if (abfd_stat.st_dev == parent_stat.st_dev |
1295 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1296 | { |
1297 | if (separate_debug_file_debug) | |
1298 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1299 | ||
1300 | return 0; | |
1301 | } | |
904578ed | 1302 | verified_as_different = 1; |
32a0e547 | 1303 | } |
904578ed JK |
1304 | else |
1305 | verified_as_different = 0; | |
32a0e547 | 1306 | |
192b62ce | 1307 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1308 | |
904578ed | 1309 | if (!file_crc_p) |
50794b45 SM |
1310 | { |
1311 | if (separate_debug_file_debug) | |
1312 | printf_filtered (_(" no, error computing CRC.\n")); | |
1313 | ||
1314 | return 0; | |
1315 | } | |
904578ed | 1316 | |
287ccc17 JK |
1317 | if (crc != file_crc) |
1318 | { | |
dccee2de TT |
1319 | unsigned long parent_crc; |
1320 | ||
0a93529c GB |
1321 | /* If the files could not be verified as different with |
1322 | bfd_stat then we need to calculate the parent's CRC | |
1323 | to verify whether the files are different or not. */ | |
904578ed | 1324 | |
dccee2de | 1325 | if (!verified_as_different) |
904578ed | 1326 | { |
dccee2de | 1327 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1328 | { |
1329 | if (separate_debug_file_debug) | |
1330 | printf_filtered (_(" no, error computing CRC.\n")); | |
1331 | ||
1332 | return 0; | |
1333 | } | |
904578ed JK |
1334 | } |
1335 | ||
dccee2de | 1336 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1337 | warning (_("the debug information found in \"%s\"" |
1338 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1339 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1340 | |
50794b45 SM |
1341 | if (separate_debug_file_debug) |
1342 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1343 | ||
287ccc17 JK |
1344 | return 0; |
1345 | } | |
1346 | ||
50794b45 SM |
1347 | if (separate_debug_file_debug) |
1348 | printf_filtered (_(" yes!\n")); | |
1349 | ||
287ccc17 | 1350 | return 1; |
5b5d99cf JB |
1351 | } |
1352 | ||
aa28a74e | 1353 | char *debug_file_directory = NULL; |
920d2a44 AC |
1354 | static void |
1355 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1356 | struct cmd_list_element *c, const char *value) | |
1357 | { | |
3e43a32a MS |
1358 | fprintf_filtered (file, |
1359 | _("The directory where separate debug " | |
1360 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1361 | value); |
1362 | } | |
5b5d99cf JB |
1363 | |
1364 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1365 | #define DEBUG_SUBDIRECTORY ".debug" | |
1366 | #endif | |
1367 | ||
1db33378 PP |
1368 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1369 | where the original file resides (may not be the same as | |
1370 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1371 | looking for. CANON_DIR is the "realpath" form of DIR. |
1372 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1373 | Returns the path of the file with separate debug info, or an empty |
1374 | string. */ | |
1db33378 | 1375 | |
a8dbfd58 | 1376 | static std::string |
1db33378 PP |
1377 | find_separate_debug_file (const char *dir, |
1378 | const char *canon_dir, | |
1379 | const char *debuglink, | |
1380 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1381 | { |
c4dcb155 | 1382 | if (separate_debug_file_debug) |
22068491 TT |
1383 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1384 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1385 | |
5b5d99cf | 1386 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1387 | std::string debugfile = dir; |
1388 | debugfile += debuglink; | |
5b5d99cf | 1389 | |
32a0e547 | 1390 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1391 | return debugfile; |
5417f6dc | 1392 | |
5b5d99cf | 1393 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1394 | debugfile = dir; |
1395 | debugfile += DEBUG_SUBDIRECTORY; | |
1396 | debugfile += "/"; | |
1397 | debugfile += debuglink; | |
5b5d99cf | 1398 | |
32a0e547 | 1399 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1400 | return debugfile; |
5417f6dc | 1401 | |
24ddea62 | 1402 | /* Then try in the global debugfile directories. |
f888f159 | 1403 | |
24ddea62 JK |
1404 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1405 | cause "/..." lookups. */ | |
5417f6dc | 1406 | |
5d36dfb9 AU |
1407 | bool target_prefix = startswith (dir, "target:"); |
1408 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1409 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1410 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
f62318e9 | 1411 | gdb::unique_xmalloc_ptr<char> canon_sysroot = gdb_realpath (gdb_sysroot); |
24ddea62 | 1412 | |
5f2459c2 EZ |
1413 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1414 | convert the drive letter into a one-letter directory, so that the | |
1415 | file name resulting from splicing below will be valid. | |
1416 | ||
1417 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1418 | There are various remote-debugging scenarios where such a | |
1419 | transformation of the drive letter might be required when GDB runs | |
1420 | on a Posix host, see | |
1421 | ||
1422 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1423 | ||
85102364 | 1424 | If some of those scenarios need to be supported, we will need to |
5f2459c2 EZ |
1425 | use a different condition for HAS_DRIVE_SPEC and a different macro |
1426 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1427 | std::string drive; | |
1428 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1429 | { | |
1430 | drive = dir_notarget[0]; | |
1431 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1432 | } | |
1433 | ||
e80aaf61 | 1434 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1435 | { |
5d36dfb9 AU |
1436 | debugfile = target_prefix ? "target:" : ""; |
1437 | debugfile += debugdir.get (); | |
a8dbfd58 | 1438 | debugfile += "/"; |
5f2459c2 | 1439 | debugfile += drive; |
5d36dfb9 | 1440 | debugfile += dir_notarget; |
a8dbfd58 | 1441 | debugfile += debuglink; |
aa28a74e | 1442 | |
32a0e547 | 1443 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1444 | return debugfile; |
24ddea62 | 1445 | |
f62318e9 JB |
1446 | const char *base_path = NULL; |
1447 | if (canon_dir != NULL) | |
1448 | { | |
1449 | if (canon_sysroot.get () != NULL) | |
1450 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1451 | else | |
1452 | base_path = child_path (gdb_sysroot, canon_dir); | |
1453 | } | |
1454 | if (base_path != NULL) | |
24ddea62 | 1455 | { |
402d2bfe JB |
1456 | /* If the file is in the sysroot, try using its base path in |
1457 | the global debugfile directory. */ | |
5d36dfb9 AU |
1458 | debugfile = target_prefix ? "target:" : ""; |
1459 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1460 | debugfile += "/"; |
1461 | debugfile += base_path; | |
a8dbfd58 SM |
1462 | debugfile += "/"; |
1463 | debugfile += debuglink; | |
24ddea62 | 1464 | |
402d2bfe JB |
1465 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1466 | return debugfile; | |
1467 | ||
1468 | /* If the file is in the sysroot, try using its base path in | |
1469 | the sysroot's global debugfile directory. */ | |
1470 | debugfile = target_prefix ? "target:" : ""; | |
1471 | debugfile += gdb_sysroot; | |
1472 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1473 | debugfile += "/"; |
1474 | debugfile += base_path; | |
402d2bfe JB |
1475 | debugfile += "/"; |
1476 | debugfile += debuglink; | |
1477 | ||
32a0e547 | 1478 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1479 | return debugfile; |
24ddea62 | 1480 | } |
402d2bfe | 1481 | |
aa28a74e | 1482 | } |
f888f159 | 1483 | |
a8dbfd58 | 1484 | return std::string (); |
1db33378 PP |
1485 | } |
1486 | ||
7edbb660 | 1487 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1488 | If there were no directory separators in PATH, PATH will be empty |
1489 | string on return. */ | |
1490 | ||
1491 | static void | |
1492 | terminate_after_last_dir_separator (char *path) | |
1493 | { | |
1494 | int i; | |
1495 | ||
1496 | /* Strip off the final filename part, leaving the directory name, | |
1497 | followed by a slash. The directory can be relative or absolute. */ | |
1498 | for (i = strlen(path) - 1; i >= 0; i--) | |
1499 | if (IS_DIR_SEPARATOR (path[i])) | |
1500 | break; | |
1501 | ||
1502 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1503 | path[i + 1] = '\0'; | |
1504 | } | |
1505 | ||
1506 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1507 | Returns pathname, or an empty string. */ |
1db33378 | 1508 | |
a8dbfd58 | 1509 | std::string |
1db33378 PP |
1510 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1511 | { | |
1db33378 | 1512 | unsigned long crc32; |
1db33378 | 1513 | |
5eae7aea TT |
1514 | gdb::unique_xmalloc_ptr<char> debuglink |
1515 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1516 | |
1517 | if (debuglink == NULL) | |
1518 | { | |
1519 | /* There's no separate debug info, hence there's no way we could | |
1520 | load it => no warning. */ | |
a8dbfd58 | 1521 | return std::string (); |
1db33378 PP |
1522 | } |
1523 | ||
5eae7aea TT |
1524 | std::string dir = objfile_name (objfile); |
1525 | terminate_after_last_dir_separator (&dir[0]); | |
1526 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1527 | |
a8dbfd58 SM |
1528 | std::string debugfile |
1529 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1530 | debuglink.get (), crc32, objfile); | |
1db33378 | 1531 | |
a8dbfd58 | 1532 | if (debugfile.empty ()) |
1db33378 | 1533 | { |
1db33378 PP |
1534 | /* For PR gdb/9538, try again with realpath (if different from the |
1535 | original). */ | |
1536 | ||
1537 | struct stat st_buf; | |
1538 | ||
4262abfb JK |
1539 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1540 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1541 | { |
5eae7aea TT |
1542 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1543 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1544 | if (symlink_dir != NULL) |
1545 | { | |
5eae7aea TT |
1546 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1547 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1548 | { |
1549 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1550 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1551 | symlink_dir.get (), | |
1552 | debuglink.get (), | |
1db33378 PP |
1553 | crc32, |
1554 | objfile); | |
1555 | } | |
1556 | } | |
1557 | } | |
1db33378 | 1558 | } |
aa28a74e | 1559 | |
25522fae | 1560 | return debugfile; |
5b5d99cf JB |
1561 | } |
1562 | ||
97cbe998 SDJ |
1563 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1564 | simultaneously. */ | |
1565 | ||
1566 | static void | |
1567 | validate_readnow_readnever (objfile_flags flags) | |
1568 | { | |
1569 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1570 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1571 | } | |
1572 | ||
c906108c SS |
1573 | /* This is the symbol-file command. Read the file, analyze its |
1574 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1575 | the command is rather bizarre: |
1576 | ||
1577 | 1. The function buildargv implements various quoting conventions | |
1578 | which are undocumented and have little or nothing in common with | |
1579 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1580 | ||
1581 | 2. Options are used, which are not generally used in GDB (perhaps | |
1582 | "set mapped on", "set readnow on" would be better) | |
1583 | ||
1584 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1585 | conventions (because it is confusing and inconvenient). */ |
1586 | ||
1587 | void | |
1d8b34a7 | 1588 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1589 | { |
c906108c SS |
1590 | dont_repeat (); |
1591 | ||
1592 | if (args == NULL) | |
1593 | { | |
1adeb98a | 1594 | symbol_file_clear (from_tty); |
c906108c SS |
1595 | } |
1596 | else | |
1597 | { | |
b15cc25c | 1598 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1599 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1600 | char *name = NULL; |
40fc416f | 1601 | bool stop_processing_options = false; |
d4d429d5 | 1602 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1603 | int idx; |
1604 | char *arg; | |
cb2f3a29 | 1605 | |
ecf45d2c SL |
1606 | if (from_tty) |
1607 | add_flags |= SYMFILE_VERBOSE; | |
1608 | ||
773a1edc | 1609 | gdb_argv built_argv (args); |
40fc416f | 1610 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1611 | { |
40fc416f | 1612 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1613 | { |
40fc416f SDJ |
1614 | if (name == NULL) |
1615 | name = arg; | |
1616 | else | |
1617 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1618 | } |
40fc416f SDJ |
1619 | else if (strcmp (arg, "-readnow") == 0) |
1620 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1621 | else if (strcmp (arg, "-readnever") == 0) |
1622 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1623 | else if (strcmp (arg, "-o") == 0) |
1624 | { | |
1625 | arg = built_argv[++idx]; | |
1626 | if (arg == NULL) | |
1627 | error (_("Missing argument to -o")); | |
1628 | ||
1629 | offset = parse_and_eval_address (arg); | |
1630 | } | |
40fc416f SDJ |
1631 | else if (strcmp (arg, "--") == 0) |
1632 | stop_processing_options = true; | |
1633 | else | |
1634 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1635 | } |
1636 | ||
1637 | if (name == NULL) | |
cb2f3a29 | 1638 | error (_("no symbol file name was specified")); |
40fc416f | 1639 | |
97cbe998 SDJ |
1640 | validate_readnow_readnever (flags); |
1641 | ||
ea142fbf AH |
1642 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1643 | (Position Independent Executable) main symbol file will only be | |
1644 | computed by the solib_create_inferior_hook below. Without it, | |
1645 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1646 | displacement. */ | |
1647 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1648 | ||
d4d429d5 | 1649 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1650 | |
1651 | solib_create_inferior_hook (from_tty); | |
1652 | ||
1653 | /* Now it's safe to re-add the breakpoints. */ | |
1654 | breakpoint_re_set (); | |
c906108c SS |
1655 | } |
1656 | } | |
1657 | ||
d3214198 | 1658 | /* Set the initial language. */ |
c906108c | 1659 | |
8b60591b | 1660 | void |
fba45db2 | 1661 | set_initial_language (void) |
c906108c | 1662 | { |
0dce4280 TV |
1663 | if (language_mode == language_mode_manual) |
1664 | return; | |
9e6c82ad | 1665 | enum language lang = main_language (); |
658dadf0 TV |
1666 | /* Make C the default language. */ |
1667 | enum language default_lang = language_c; | |
c906108c | 1668 | |
9e6c82ad | 1669 | if (lang == language_unknown) |
01f8c46d | 1670 | { |
cd215b2e | 1671 | const char *name = main_name (); |
658dadf0 TV |
1672 | struct symbol *sym |
1673 | = lookup_symbol_in_language (name, NULL, VAR_DOMAIN, default_lang, | |
1674 | NULL).symbol; | |
f888f159 | 1675 | |
bf6d8a91 | 1676 | if (sym != NULL) |
c1b5c1eb | 1677 | lang = sym->language (); |
01f8c46d | 1678 | } |
cb2f3a29 | 1679 | |
ccefe4c4 TT |
1680 | if (lang == language_unknown) |
1681 | { | |
658dadf0 | 1682 | lang = default_lang; |
c906108c | 1683 | } |
ccefe4c4 TT |
1684 | |
1685 | set_language (lang); | |
1686 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1687 | } |
1688 | ||
cb2f3a29 MK |
1689 | /* Open the file specified by NAME and hand it off to BFD for |
1690 | preliminary analysis. Return a newly initialized bfd *, which | |
1691 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1692 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1693 | |
192b62ce | 1694 | gdb_bfd_ref_ptr |
97a41605 | 1695 | symfile_bfd_open (const char *name) |
c906108c | 1696 | { |
97a41605 | 1697 | int desc = -1; |
c906108c | 1698 | |
e0cc99a6 | 1699 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1700 | if (!is_target_filename (name)) |
f1838a98 | 1701 | { |
ee0c3293 | 1702 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1703 | |
97a41605 GB |
1704 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1705 | desc = openp (getenv ("PATH"), | |
1706 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1707 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1708 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1709 | if (desc < 0) |
1710 | { | |
ee0c3293 | 1711 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1712 | |
ee0c3293 | 1713 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1714 | desc = openp (getenv ("PATH"), |
1715 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1716 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1717 | } | |
c906108c | 1718 | #endif |
97a41605 | 1719 | if (desc < 0) |
ee0c3293 | 1720 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1721 | |
e0cc99a6 | 1722 | name = absolute_name.get (); |
97a41605 | 1723 | } |
c906108c | 1724 | |
192b62ce TT |
1725 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1726 | if (sym_bfd == NULL) | |
faab9922 JK |
1727 | error (_("`%s': can't open to read symbols: %s."), name, |
1728 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1729 | |
192b62ce TT |
1730 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1731 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1732 | |
192b62ce TT |
1733 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1734 | error (_("`%s': can't read symbols: %s."), name, | |
1735 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1736 | |
1737 | return sym_bfd; | |
c906108c SS |
1738 | } |
1739 | ||
cb2f3a29 MK |
1740 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1741 | the section was not found. */ | |
1742 | ||
0e931cf0 | 1743 | int |
a121b7c1 | 1744 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1745 | { |
1746 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1747 | |
0e931cf0 JB |
1748 | if (sect) |
1749 | return sect->index; | |
1750 | else | |
1751 | return -1; | |
1752 | } | |
1753 | ||
c256e171 DE |
1754 | /* Link SF into the global symtab_fns list. |
1755 | FLAVOUR is the file format that SF handles. | |
1756 | Called on startup by the _initialize routine in each object file format | |
1757 | reader, to register information about each format the reader is prepared | |
1758 | to handle. */ | |
c906108c SS |
1759 | |
1760 | void | |
c256e171 | 1761 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1762 | { |
905014d7 | 1763 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1764 | } |
1765 | ||
cb2f3a29 MK |
1766 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1767 | either returns or calls error(). The result is an initialized | |
1768 | struct sym_fns in the objfile structure, that contains cached | |
1769 | information about the symbol file. */ | |
c906108c | 1770 | |
00b5771c | 1771 | static const struct sym_fns * |
31d99776 | 1772 | find_sym_fns (bfd *abfd) |
c906108c | 1773 | { |
31d99776 | 1774 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1775 | |
75245b24 MS |
1776 | if (our_flavour == bfd_target_srec_flavour |
1777 | || our_flavour == bfd_target_ihex_flavour | |
1778 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1779 | return NULL; /* No symbols. */ |
75245b24 | 1780 | |
905014d7 SM |
1781 | for (const registered_sym_fns &rsf : symtab_fns) |
1782 | if (our_flavour == rsf.sym_flavour) | |
1783 | return rsf.sym_fns; | |
cb2f3a29 | 1784 | |
8a3fe4f8 | 1785 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1786 | bfd_get_target (abfd)); |
c906108c SS |
1787 | } |
1788 | \f | |
cb2f3a29 | 1789 | |
c906108c SS |
1790 | /* This function runs the load command of our current target. */ |
1791 | ||
1792 | static void | |
5fed81ff | 1793 | load_command (const char *arg, int from_tty) |
c906108c | 1794 | { |
e5cc9f32 JB |
1795 | dont_repeat (); |
1796 | ||
4487aabf PA |
1797 | /* The user might be reloading because the binary has changed. Take |
1798 | this opportunity to check. */ | |
1799 | reopen_exec_file (); | |
1800 | reread_symbols (); | |
1801 | ||
b577b6af | 1802 | std::string temp; |
c906108c | 1803 | if (arg == NULL) |
1986bccd | 1804 | { |
b577b6af | 1805 | const char *parg, *prev; |
1986bccd | 1806 | |
b577b6af | 1807 | arg = get_exec_file (1); |
1986bccd | 1808 | |
b577b6af TT |
1809 | /* We may need to quote this string so buildargv can pull it |
1810 | apart. */ | |
1811 | prev = parg = arg; | |
1986bccd AS |
1812 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1813 | { | |
b577b6af TT |
1814 | temp.append (prev, parg - prev); |
1815 | prev = parg++; | |
1816 | temp.push_back ('\\'); | |
1986bccd | 1817 | } |
b577b6af TT |
1818 | /* If we have not copied anything yet, then we didn't see a |
1819 | character to quote, and we can just leave ARG unchanged. */ | |
1820 | if (!temp.empty ()) | |
1986bccd | 1821 | { |
b577b6af TT |
1822 | temp.append (prev); |
1823 | arg = temp.c_str (); | |
1986bccd AS |
1824 | } |
1825 | } | |
1826 | ||
c906108c | 1827 | target_load (arg, from_tty); |
2889e661 JB |
1828 | |
1829 | /* After re-loading the executable, we don't really know which | |
1830 | overlays are mapped any more. */ | |
1831 | overlay_cache_invalid = 1; | |
c906108c SS |
1832 | } |
1833 | ||
1834 | /* This version of "load" should be usable for any target. Currently | |
1835 | it is just used for remote targets, not inftarg.c or core files, | |
1836 | on the theory that only in that case is it useful. | |
1837 | ||
1838 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1839 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1840 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1841 | performance compares. */ | |
917317f4 | 1842 | |
917317f4 JM |
1843 | static int validate_download = 0; |
1844 | ||
a76d924d | 1845 | /* Opaque data for load_progress. */ |
55089490 TT |
1846 | struct load_progress_data |
1847 | { | |
a76d924d | 1848 | /* Cumulative data. */ |
55089490 TT |
1849 | unsigned long write_count = 0; |
1850 | unsigned long data_count = 0; | |
1851 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1852 | }; |
1853 | ||
1854 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1855 | struct load_progress_section_data |
1856 | { | |
1857 | load_progress_section_data (load_progress_data *cumulative_, | |
1858 | const char *section_name_, ULONGEST section_size_, | |
1859 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1860 | : cumulative (cumulative_), section_name (section_name_), | |
1861 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1862 | {} | |
1863 | ||
a76d924d | 1864 | struct load_progress_data *cumulative; |
cf7a04e8 | 1865 | |
a76d924d | 1866 | /* Per-section data. */ |
cf7a04e8 | 1867 | const char *section_name; |
55089490 | 1868 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1869 | ULONGEST section_size; |
1870 | CORE_ADDR lma; | |
1871 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1872 | }; |
1873 | ||
55089490 TT |
1874 | /* Opaque data for load_section_callback. */ |
1875 | struct load_section_data | |
1876 | { | |
1877 | load_section_data (load_progress_data *progress_data_) | |
1878 | : progress_data (progress_data_) | |
1879 | {} | |
1880 | ||
1881 | ~load_section_data () | |
1882 | { | |
1883 | for (auto &&request : requests) | |
1884 | { | |
1885 | xfree (request.data); | |
1886 | delete ((load_progress_section_data *) request.baton); | |
1887 | } | |
1888 | } | |
1889 | ||
1890 | CORE_ADDR load_offset = 0; | |
1891 | struct load_progress_data *progress_data; | |
1892 | std::vector<struct memory_write_request> requests; | |
1893 | }; | |
1894 | ||
a76d924d | 1895 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1896 | |
1897 | static void | |
1898 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1899 | { | |
19ba03f4 SM |
1900 | struct load_progress_section_data *args |
1901 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1902 | struct load_progress_data *totals; |
1903 | ||
1904 | if (args == NULL) | |
1905 | /* Writing padding data. No easy way to get at the cumulative | |
1906 | stats, so just ignore this. */ | |
1907 | return; | |
1908 | ||
1909 | totals = args->cumulative; | |
1910 | ||
1911 | if (bytes == 0 && args->section_sent == 0) | |
1912 | { | |
1913 | /* The write is just starting. Let the user know we've started | |
1914 | this section. */ | |
112e8700 SM |
1915 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1916 | args->section_name, | |
1917 | hex_string (args->section_size), | |
1918 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1919 | return; |
1920 | } | |
cf7a04e8 DJ |
1921 | |
1922 | if (validate_download) | |
1923 | { | |
1924 | /* Broken memories and broken monitors manifest themselves here | |
1925 | when bring new computers to life. This doubles already slow | |
1926 | downloads. */ | |
1927 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1928 | might add a verify_memory() method to the target vector and | |
1929 | then use that. remote.c could implement that method using | |
1930 | the ``qCRC'' packet. */ | |
0efef640 | 1931 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1932 | |
0efef640 | 1933 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1934 | error (_("Download verify read failed at %s"), |
f5656ead | 1935 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1936 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1937 | error (_("Download verify compare failed at %s"), |
f5656ead | 1938 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1939 | } |
a76d924d | 1940 | totals->data_count += bytes; |
cf7a04e8 DJ |
1941 | args->lma += bytes; |
1942 | args->buffer += bytes; | |
a76d924d | 1943 | totals->write_count += 1; |
cf7a04e8 | 1944 | args->section_sent += bytes; |
522002f9 | 1945 | if (check_quit_flag () |
cf7a04e8 DJ |
1946 | || (deprecated_ui_load_progress_hook != NULL |
1947 | && deprecated_ui_load_progress_hook (args->section_name, | |
1948 | args->section_sent))) | |
1949 | error (_("Canceled the download")); | |
1950 | ||
1951 | if (deprecated_show_load_progress != NULL) | |
1952 | deprecated_show_load_progress (args->section_name, | |
1953 | args->section_sent, | |
1954 | args->section_size, | |
a76d924d DJ |
1955 | totals->data_count, |
1956 | totals->total_size); | |
cf7a04e8 DJ |
1957 | } |
1958 | ||
5486c517 | 1959 | /* Service function for generic_load. */ |
e4f9b4d5 MS |
1960 | |
1961 | static void | |
5486c517 TT |
1962 | load_one_section (bfd *abfd, asection *asec, |
1963 | struct load_section_data *args) | |
e4f9b4d5 | 1964 | { |
fd361982 AM |
1965 | bfd_size_type size = bfd_section_size (asec); |
1966 | const char *sect_name = bfd_section_name (asec); | |
e4f9b4d5 | 1967 | |
fd361982 | 1968 | if ((bfd_section_flags (asec) & SEC_LOAD) == 0) |
cf7a04e8 | 1969 | return; |
e4f9b4d5 | 1970 | |
cf7a04e8 DJ |
1971 | if (size == 0) |
1972 | return; | |
e4f9b4d5 | 1973 | |
fd361982 | 1974 | ULONGEST begin = bfd_section_lma (asec) + args->load_offset; |
55089490 TT |
1975 | ULONGEST end = begin + size; |
1976 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1977 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1978 | |
55089490 TT |
1979 | load_progress_section_data *section_data |
1980 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1981 | begin, buffer); | |
cf7a04e8 | 1982 | |
55089490 | 1983 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1984 | } |
1985 | ||
dcb07cfa PA |
1986 | static void print_transfer_performance (struct ui_file *stream, |
1987 | unsigned long data_count, | |
1988 | unsigned long write_count, | |
1989 | std::chrono::steady_clock::duration d); | |
1990 | ||
854f6088 SM |
1991 | /* See symfile.h. */ |
1992 | ||
c906108c | 1993 | void |
9cbe5fff | 1994 | generic_load (const char *args, int from_tty) |
c906108c | 1995 | { |
a76d924d | 1996 | struct load_progress_data total_progress; |
55089490 | 1997 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 1998 | struct ui_out *uiout = current_uiout; |
a76d924d | 1999 | |
d1a41061 PP |
2000 | if (args == NULL) |
2001 | error_no_arg (_("file to load")); | |
1986bccd | 2002 | |
773a1edc | 2003 | gdb_argv argv (args); |
1986bccd | 2004 | |
ee0c3293 | 2005 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2006 | |
2007 | if (argv[1] != NULL) | |
917317f4 | 2008 | { |
f698ca8e | 2009 | const char *endptr; |
ba5f2f8a | 2010 | |
f698ca8e | 2011 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2012 | |
2013 | /* If the last word was not a valid number then | |
2014 | treat it as a file name with spaces in. */ | |
2015 | if (argv[1] == endptr) | |
2016 | error (_("Invalid download offset:%s."), argv[1]); | |
2017 | ||
2018 | if (argv[2] != NULL) | |
2019 | error (_("Too many parameters.")); | |
917317f4 | 2020 | } |
c906108c | 2021 | |
c378eb4e | 2022 | /* Open the file for loading. */ |
ad80db5b | 2023 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget)); |
c906108c | 2024 | if (loadfile_bfd == NULL) |
ee0c3293 | 2025 | perror_with_name (filename.get ()); |
917317f4 | 2026 | |
192b62ce | 2027 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2028 | { |
ee0c3293 | 2029 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2030 | bfd_errmsg (bfd_get_error ())); |
2031 | } | |
c5aa993b | 2032 | |
5486c517 TT |
2033 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2034 | total_progress.total_size += bfd_section_size (asec); | |
a76d924d | 2035 | |
5486c517 TT |
2036 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2037 | load_one_section (loadfile_bfd.get (), asec, &cbdata); | |
c2d11a7d | 2038 | |
dcb07cfa PA |
2039 | using namespace std::chrono; |
2040 | ||
2041 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2042 | |
a76d924d DJ |
2043 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2044 | load_progress) != 0) | |
2045 | error (_("Load failed")); | |
c906108c | 2046 | |
dcb07cfa | 2047 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2048 | |
55089490 | 2049 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2050 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2051 | uiout->text ("Start address "); |
ca8d69be | 2052 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2053 | uiout->text (", load size "); |
1f77b012 | 2054 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2055 | uiout->text ("\n"); |
fb14de7b | 2056 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2057 | |
38963c97 DJ |
2058 | /* Reset breakpoints, now that we have changed the load image. For |
2059 | instance, breakpoints may have been set (or reset, by | |
2060 | post_create_inferior) while connected to the target but before we | |
2061 | loaded the program. In that case, the prologue analyzer could | |
2062 | have read instructions from the target to find the right | |
2063 | breakpoint locations. Loading has changed the contents of that | |
2064 | memory. */ | |
2065 | ||
2066 | breakpoint_re_set (); | |
2067 | ||
a76d924d DJ |
2068 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2069 | total_progress.write_count, | |
dcb07cfa | 2070 | end_time - start_time); |
c906108c SS |
2071 | } |
2072 | ||
dcb07cfa PA |
2073 | /* Report on STREAM the performance of a memory transfer operation, |
2074 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2075 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2076 | that information is not available. TIME is how long the operation | |
2077 | lasted. */ | |
c906108c | 2078 | |
dcb07cfa | 2079 | static void |
d9fcf2fb | 2080 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2081 | unsigned long data_count, |
2082 | unsigned long write_count, | |
dcb07cfa | 2083 | std::chrono::steady_clock::duration time) |
917317f4 | 2084 | { |
dcb07cfa | 2085 | using namespace std::chrono; |
79a45e25 | 2086 | struct ui_out *uiout = current_uiout; |
2b71414d | 2087 | |
dcb07cfa | 2088 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2089 | |
112e8700 | 2090 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2091 | if (ms.count () > 0) |
8b93c638 | 2092 | { |
dcb07cfa | 2093 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2094 | |
112e8700 | 2095 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2096 | { |
1f77b012 | 2097 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2098 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2099 | } |
2100 | else if (rate < 1024) | |
2101 | { | |
1f77b012 | 2102 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2103 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2104 | } |
2105 | else | |
2106 | { | |
1f77b012 | 2107 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2108 | uiout->text (" KB/sec"); |
9f43d28c | 2109 | } |
8b93c638 JM |
2110 | } |
2111 | else | |
2112 | { | |
1f77b012 | 2113 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2114 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2115 | } |
2116 | if (write_count > 0) | |
2117 | { | |
112e8700 | 2118 | uiout->text (", "); |
1f77b012 | 2119 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2120 | uiout->text (" bytes/write"); |
8b93c638 | 2121 | } |
112e8700 | 2122 | uiout->text (".\n"); |
c906108c SS |
2123 | } |
2124 | ||
291f9a96 PT |
2125 | /* Add an OFFSET to the start address of each section in OBJF, except |
2126 | sections that were specified in ADDRS. */ | |
2127 | ||
2128 | static void | |
2129 | set_objfile_default_section_offset (struct objfile *objf, | |
2130 | const section_addr_info &addrs, | |
2131 | CORE_ADDR offset) | |
2132 | { | |
2133 | /* Add OFFSET to all sections by default. */ | |
6a053cb1 | 2134 | section_offsets offsets (objf->section_offsets.size (), offset); |
291f9a96 PT |
2135 | |
2136 | /* Create sorted lists of all sections in ADDRS as well as all | |
2137 | sections in OBJF. */ | |
2138 | ||
2139 | std::vector<const struct other_sections *> addrs_sorted | |
2140 | = addrs_section_sort (addrs); | |
2141 | ||
2142 | section_addr_info objf_addrs | |
2143 | = build_section_addr_info_from_objfile (objf); | |
2144 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2145 | = addrs_section_sort (objf_addrs); | |
2146 | ||
2147 | /* Walk the BFD section list, and if a matching section is found in | |
2148 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2149 | unchanged. | |
2150 | ||
2151 | Note that both lists may contain multiple sections with the same | |
2152 | name, and then the sections from ADDRS are matched in BFD order | |
2153 | (thanks to sectindex). */ | |
2154 | ||
2155 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2156 | = addrs_sorted.begin (); | |
ff27d073 | 2157 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2158 | { |
2159 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2160 | int cmp = -1; | |
2161 | ||
2162 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2163 | { | |
2164 | const struct other_sections *sect = *addrs_sorted_iter; | |
2165 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2166 | cmp = strcmp (sect_name, objf_name); | |
2167 | if (cmp <= 0) | |
2168 | ++addrs_sorted_iter; | |
2169 | } | |
2170 | ||
2171 | if (cmp == 0) | |
6a053cb1 | 2172 | offsets[objf_sect->sectindex] = 0; |
291f9a96 PT |
2173 | } |
2174 | ||
2175 | /* Apply the new section offsets. */ | |
6a053cb1 | 2176 | objfile_relocate (objf, offsets); |
291f9a96 PT |
2177 | } |
2178 | ||
c906108c SS |
2179 | /* This function allows the addition of incrementally linked object files. |
2180 | It does not modify any state in the target, only in the debugger. */ | |
2181 | ||
c906108c | 2182 | static void |
2cf311eb | 2183 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2184 | { |
5af949e3 | 2185 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2186 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2187 | char *arg; |
2acceee2 | 2188 | int argcnt = 0; |
76ad5e1e | 2189 | struct objfile *objf; |
b15cc25c PA |
2190 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2191 | symfile_add_flags add_flags = 0; | |
2192 | ||
2193 | if (from_tty) | |
2194 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2195 | |
a39a16c4 | 2196 | struct sect_opt |
2acceee2 | 2197 | { |
a121b7c1 PA |
2198 | const char *name; |
2199 | const char *value; | |
a39a16c4 | 2200 | }; |
db162d44 | 2201 | |
40fc416f SDJ |
2202 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2203 | bool stop_processing_options = false; | |
291f9a96 | 2204 | CORE_ADDR offset = 0; |
c5aa993b | 2205 | |
c906108c SS |
2206 | dont_repeat (); |
2207 | ||
2208 | if (args == NULL) | |
8a3fe4f8 | 2209 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2210 | |
40fc416f | 2211 | bool seen_addr = false; |
291f9a96 | 2212 | bool seen_offset = false; |
773a1edc | 2213 | gdb_argv argv (args); |
db162d44 | 2214 | |
5b96932b AS |
2215 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2216 | { | |
40fc416f | 2217 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2218 | { |
40fc416f | 2219 | if (filename == NULL) |
41dc8db8 | 2220 | { |
40fc416f SDJ |
2221 | /* First non-option argument is always the filename. */ |
2222 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2223 | } |
40fc416f | 2224 | else if (!seen_addr) |
41dc8db8 | 2225 | { |
40fc416f SDJ |
2226 | /* The second non-option argument is always the text |
2227 | address at which to load the program. */ | |
2228 | sect_opts[0].value = arg; | |
2229 | seen_addr = true; | |
41dc8db8 MB |
2230 | } |
2231 | else | |
02ca603a | 2232 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2233 | } |
40fc416f SDJ |
2234 | else if (strcmp (arg, "-readnow") == 0) |
2235 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2236 | else if (strcmp (arg, "-readnever") == 0) |
2237 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2238 | else if (strcmp (arg, "-s") == 0) |
2239 | { | |
2240 | if (argv[argcnt + 1] == NULL) | |
2241 | error (_("Missing section name after \"-s\"")); | |
2242 | else if (argv[argcnt + 2] == NULL) | |
2243 | error (_("Missing section address after \"-s\"")); | |
2244 | ||
2245 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2246 | ||
2247 | sect_opts.push_back (sect); | |
2248 | argcnt += 2; | |
2249 | } | |
291f9a96 PT |
2250 | else if (strcmp (arg, "-o") == 0) |
2251 | { | |
2252 | arg = argv[++argcnt]; | |
2253 | if (arg == NULL) | |
2254 | error (_("Missing argument to -o")); | |
2255 | ||
2256 | offset = parse_and_eval_address (arg); | |
2257 | seen_offset = true; | |
2258 | } | |
40fc416f SDJ |
2259 | else if (strcmp (arg, "--") == 0) |
2260 | stop_processing_options = true; | |
2261 | else | |
2262 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2263 | } |
c906108c | 2264 | |
40fc416f SDJ |
2265 | if (filename == NULL) |
2266 | error (_("You must provide a filename to be loaded.")); | |
2267 | ||
97cbe998 SDJ |
2268 | validate_readnow_readnever (flags); |
2269 | ||
c378eb4e | 2270 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2271 | a sect_addr_info structure to be passed around to other |
2272 | functions. We have to split this up into separate print | |
bb599908 | 2273 | statements because hex_string returns a local static |
c378eb4e | 2274 | string. */ |
5417f6dc | 2275 | |
ed6dfe51 | 2276 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2277 | filename.get ()); |
37e136b1 | 2278 | section_addr_info section_addrs; |
ed6dfe51 PT |
2279 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2280 | if (!seen_addr) | |
2281 | ++it; | |
2282 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2283 | { |
db162d44 | 2284 | CORE_ADDR addr; |
ed6dfe51 PT |
2285 | const char *val = it->value; |
2286 | const char *sec = it->name; | |
5417f6dc | 2287 | |
ed6dfe51 PT |
2288 | if (section_addrs.empty ()) |
2289 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2290 | addr = parse_and_eval_address (val); |
db162d44 | 2291 | |
db162d44 | 2292 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2293 | entered on the command line. Every array element is |
2294 | assigned an ascending section index to preserve the above | |
2295 | order over an unstable sorting algorithm. This dummy | |
2296 | index is not used for any other purpose. | |
2297 | */ | |
2298 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2299 | printf_filtered ("\t%s_addr = %s\n", sec, |
2300 | paddress (gdbarch, addr)); | |
db162d44 | 2301 | |
5417f6dc | 2302 | /* The object's sections are initialized when a |
db162d44 | 2303 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2304 | This happens in reread_symbols. |
db162d44 EZ |
2305 | At this point, we don't know what file type this is, |
2306 | so we can't determine what section names are valid. */ | |
2acceee2 | 2307 | } |
291f9a96 PT |
2308 | if (seen_offset) |
2309 | printf_unfiltered (_("%s offset by %s\n"), | |
2310 | (section_addrs.empty () | |
2311 | ? _(" with all sections") | |
2312 | : _("with other sections")), | |
2313 | paddress (gdbarch, offset)); | |
2314 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2315 | printf_unfiltered ("\n"); |
db162d44 | 2316 | |
2acceee2 | 2317 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2318 | error (_("Not confirmed.")); |
c906108c | 2319 | |
37e136b1 TT |
2320 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2321 | flags); | |
f5686554 TT |
2322 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2323 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2324 | filename.get ()); | |
76ad5e1e | 2325 | |
291f9a96 PT |
2326 | if (seen_offset) |
2327 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2328 | ||
76ad5e1e | 2329 | add_target_sections_of_objfile (objf); |
c906108c SS |
2330 | |
2331 | /* Getting new symbols may change our opinion about what is | |
2332 | frameless. */ | |
2333 | reinit_frame_cache (); | |
2334 | } | |
2335 | \f | |
70992597 | 2336 | |
63644780 NB |
2337 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2338 | ||
2339 | static void | |
2cf311eb | 2340 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2341 | { |
63644780 | 2342 | struct objfile *objf = NULL; |
63644780 | 2343 | struct program_space *pspace = current_program_space; |
63644780 NB |
2344 | |
2345 | dont_repeat (); | |
2346 | ||
2347 | if (args == NULL) | |
2348 | error (_("remove-symbol-file: no symbol file provided")); | |
2349 | ||
773a1edc | 2350 | gdb_argv argv (args); |
63644780 NB |
2351 | |
2352 | if (strcmp (argv[0], "-a") == 0) | |
2353 | { | |
2354 | /* Interpret the next argument as an address. */ | |
2355 | CORE_ADDR addr; | |
2356 | ||
2357 | if (argv[1] == NULL) | |
2358 | error (_("Missing address argument")); | |
2359 | ||
2360 | if (argv[2] != NULL) | |
2361 | error (_("Junk after %s"), argv[1]); | |
2362 | ||
2363 | addr = parse_and_eval_address (argv[1]); | |
2364 | ||
2030c079 | 2365 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2366 | { |
aed57c53 TT |
2367 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2368 | && (objfile->flags & OBJF_SHARED) != 0 | |
2369 | && objfile->pspace == pspace | |
2370 | && is_addr_in_objfile (addr, objfile)) | |
2371 | { | |
2372 | objf = objfile; | |
2373 | break; | |
2374 | } | |
63644780 NB |
2375 | } |
2376 | } | |
2377 | else if (argv[0] != NULL) | |
2378 | { | |
2379 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2380 | |
2381 | if (argv[1] != NULL) | |
2382 | error (_("Junk after %s"), argv[0]); | |
2383 | ||
ee0c3293 | 2384 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2385 | |
2030c079 | 2386 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2387 | { |
aed57c53 TT |
2388 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2389 | && (objfile->flags & OBJF_SHARED) != 0 | |
2390 | && objfile->pspace == pspace | |
2391 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2392 | { | |
2393 | objf = objfile; | |
2394 | break; | |
2395 | } | |
63644780 NB |
2396 | } |
2397 | } | |
2398 | ||
2399 | if (objf == NULL) | |
2400 | error (_("No symbol file found")); | |
2401 | ||
2402 | if (from_tty | |
2403 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2404 | objfile_name (objf))) | |
2405 | error (_("Not confirmed.")); | |
2406 | ||
268e4f09 | 2407 | objf->unlink (); |
63644780 | 2408 | clear_symtab_users (0); |
63644780 NB |
2409 | } |
2410 | ||
c906108c | 2411 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2412 | |
c906108c | 2413 | void |
fba45db2 | 2414 | reread_symbols (void) |
c906108c | 2415 | { |
c906108c | 2416 | long new_modtime; |
c906108c SS |
2417 | struct stat new_statbuf; |
2418 | int res; | |
4c404b8b | 2419 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2420 | |
bf227d61 | 2421 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2422 | { |
9cce227f TG |
2423 | if (objfile->obfd == NULL) |
2424 | continue; | |
2425 | ||
2426 | /* Separate debug objfiles are handled in the main objfile. */ | |
2427 | if (objfile->separate_debug_objfile_backlink) | |
2428 | continue; | |
2429 | ||
02aeec7b JB |
2430 | /* If this object is from an archive (what you usually create with |
2431 | `ar', often called a `static library' on most systems, though | |
2432 | a `shared library' on AIX is also an archive), then you should | |
2433 | stat on the archive name, not member name. */ | |
9cce227f | 2434 | if (objfile->obfd->my_archive) |
c7e97679 | 2435 | res = stat (bfd_get_filename (objfile->obfd->my_archive), &new_statbuf); |
9cce227f | 2436 | else |
4262abfb | 2437 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2438 | if (res != 0) |
2439 | { | |
c378eb4e | 2440 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2441 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2442 | objfile_name (objfile)); | |
9cce227f TG |
2443 | continue; |
2444 | } | |
2445 | new_modtime = new_statbuf.st_mtime; | |
2446 | if (new_modtime != objfile->mtime) | |
2447 | { | |
22068491 TT |
2448 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2449 | objfile_name (objfile)); | |
9cce227f TG |
2450 | |
2451 | /* There are various functions like symbol_file_add, | |
2452 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2453 | appear to do what we want. But they have various other | |
2454 | effects which we *don't* want. So we just do stuff | |
2455 | ourselves. We don't worry about mapped files (for one thing, | |
2456 | any mapped file will be out of date). */ | |
2457 | ||
2458 | /* If we get an error, blow away this objfile (not sure if | |
2459 | that is the correct response for things like shared | |
2460 | libraries). */ | |
268e4f09 | 2461 | objfile_up objfile_holder (objfile); |
ed2b3126 | 2462 | |
9cce227f | 2463 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2464 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2465 | |
0ba1096a KT |
2466 | if (exec_bfd != NULL |
2467 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2468 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2469 | { |
2470 | /* Reload EXEC_BFD without asking anything. */ | |
2471 | ||
2472 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2473 | } | |
2474 | ||
f6eeced0 JK |
2475 | /* Keep the calls order approx. the same as in free_objfile. */ |
2476 | ||
2477 | /* Free the separate debug objfiles. It will be | |
2478 | automatically recreated by sym_read. */ | |
2479 | free_objfile_separate_debug (objfile); | |
2480 | ||
7b71fc97 L |
2481 | /* Clear the stale source cache. */ |
2482 | forget_cached_source_info (); | |
2483 | ||
f6eeced0 JK |
2484 | /* Remove any references to this objfile in the global |
2485 | value lists. */ | |
2486 | preserve_values (objfile); | |
2487 | ||
2488 | /* Nuke all the state that we will re-read. Much of the following | |
2489 | code which sets things to NULL really is necessary to tell | |
2490 | other parts of GDB that there is nothing currently there. | |
2491 | ||
2492 | Try to keep the freeing order compatible with free_objfile. */ | |
2493 | ||
2494 | if (objfile->sf != NULL) | |
2495 | { | |
2496 | (*objfile->sf->sym_finish) (objfile); | |
2497 | } | |
2498 | ||
2499 | clear_objfile_data (objfile); | |
2500 | ||
e1507e95 | 2501 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2502 | { |
192b62ce | 2503 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
b16c44de | 2504 | const char *obfd_filename; |
a4453b7e TT |
2505 | |
2506 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2507 | /* Open the new BFD before freeing the old one, so that | |
2508 | the filename remains live. */ | |
ad80db5b | 2509 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget)); |
192b62ce | 2510 | objfile->obfd = temp.release (); |
e1507e95 | 2511 | if (objfile->obfd == NULL) |
192b62ce | 2512 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2513 | } |
2514 | ||
c0c9f665 | 2515 | std::string original_name = objfile->original_name; |
24ba069a | 2516 | |
9cce227f TG |
2517 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2518 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2519 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2520 | bfd_errmsg (bfd_get_error ())); |
2521 | ||
6d6a12bf | 2522 | objfile->reset_psymtabs (); |
41664b45 DG |
2523 | |
2524 | /* NB: after this call to obstack_free, objfiles_changed | |
2525 | will need to be called (see discussion below). */ | |
9cce227f TG |
2526 | obstack_free (&objfile->objfile_obstack, 0); |
2527 | objfile->sections = NULL; | |
9d428aae SM |
2528 | objfile->section_offsets.clear (); |
2529 | objfile->sect_index_bss = -1; | |
2530 | objfile->sect_index_data = -1; | |
2531 | objfile->sect_index_rodata = -1; | |
2532 | objfile->sect_index_text = -1; | |
43f3e411 | 2533 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2534 | objfile->template_symbols = NULL; |
cf250e36 | 2535 | objfile->static_links.reset (nullptr); |
9cce227f | 2536 | |
9cce227f TG |
2537 | /* obstack_init also initializes the obstack so it is |
2538 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2539 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2540 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2541 | |
846060df JB |
2542 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2543 | data on the objfile's obstack (if sharing data across | |
2544 | multiple users is not possible), so it's important to | |
2545 | do it *after* the obstack has been initialized. */ | |
2546 | set_objfile_per_bfd (objfile); | |
2547 | ||
224c3ddb | 2548 | objfile->original_name |
efba19b0 | 2549 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2550 | |
779bd270 DE |
2551 | /* Reset the sym_fns pointer. The ELF reader can change it |
2552 | based on whether .gdb_index is present, and we need it to | |
2553 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2554 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2555 | |
d82ea6a8 | 2556 | build_objfile_section_table (objfile); |
9cce227f | 2557 | |
9cce227f TG |
2558 | /* What the hell is sym_new_init for, anyway? The concept of |
2559 | distinguishing between the main file and additional files | |
2560 | in this way seems rather dubious. */ | |
2561 | if (objfile == symfile_objfile) | |
c906108c | 2562 | { |
9cce227f | 2563 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2564 | } |
9cce227f TG |
2565 | |
2566 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2567 | clear_complaints (); |
608e2dbb TT |
2568 | |
2569 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2570 | |
2571 | /* We are about to read new symbols and potentially also | |
2572 | DWARF information. Some targets may want to pass addresses | |
2573 | read from DWARF DIE's through an adjustment function before | |
2574 | saving them, like MIPS, which may call into | |
2575 | "find_pc_section". When called, that function will make | |
2576 | use of per-objfile program space data. | |
2577 | ||
2578 | Since we discarded our section information above, we have | |
2579 | dangling pointers in the per-objfile program space data | |
2580 | structure. Force GDB to update the section mapping | |
2581 | information by letting it know the objfile has changed, | |
2582 | making the dangling pointers point to correct data | |
2583 | again. */ | |
2584 | ||
2585 | objfiles_changed (); | |
2586 | ||
9d428aae SM |
2587 | /* Recompute section offsets and section indices. */ |
2588 | objfile->sf->sym_offsets (objfile, {}); | |
2589 | ||
608e2dbb | 2590 | read_symbols (objfile, 0); |
b11896a5 | 2591 | |
9cce227f | 2592 | if (!objfile_has_symbols (objfile)) |
c906108c | 2593 | { |
9cce227f | 2594 | wrap_here (""); |
22068491 | 2595 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2596 | wrap_here (""); |
c5aa993b | 2597 | } |
9cce227f TG |
2598 | |
2599 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2600 | clear_complaints (); |
9cce227f TG |
2601 | |
2602 | /* Getting new symbols may change our opinion about what is | |
2603 | frameless. */ | |
2604 | ||
2605 | reinit_frame_cache (); | |
2606 | ||
2607 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2608 | objfile_holder.release (); |
286526c1 | 2609 | defer_clear_users.release (); |
9cce227f TG |
2610 | |
2611 | /* If the mtime has changed between the time we set new_modtime | |
2612 | and now, we *want* this to be out of date, so don't call stat | |
2613 | again now. */ | |
2614 | objfile->mtime = new_modtime; | |
9cce227f | 2615 | init_entry_point_info (objfile); |
4ac39b97 | 2616 | |
4c404b8b | 2617 | new_objfiles.push_back (objfile); |
c906108c SS |
2618 | } |
2619 | } | |
c906108c | 2620 | |
4c404b8b | 2621 | if (!new_objfiles.empty ()) |
ea53e89f | 2622 | { |
c1e56572 | 2623 | clear_symtab_users (0); |
4ac39b97 JK |
2624 | |
2625 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2626 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2627 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2628 | for (auto iter : new_objfiles) |
c486b610 | 2629 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2630 | |
ea53e89f JB |
2631 | /* At least one objfile has changed, so we can consider that |
2632 | the executable we're debugging has changed too. */ | |
76727919 | 2633 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2634 | } |
c906108c | 2635 | } |
c906108c SS |
2636 | \f |
2637 | ||
593e3209 | 2638 | struct filename_language |
c5aa993b | 2639 | { |
593e3209 SM |
2640 | filename_language (const std::string &ext_, enum language lang_) |
2641 | : ext (ext_), lang (lang_) | |
2642 | {} | |
3fcf0b0d | 2643 | |
593e3209 SM |
2644 | std::string ext; |
2645 | enum language lang; | |
2646 | }; | |
c906108c | 2647 | |
593e3209 | 2648 | static std::vector<filename_language> filename_language_table; |
c906108c | 2649 | |
56618e20 TT |
2650 | /* See symfile.h. */ |
2651 | ||
2652 | void | |
2653 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2654 | { |
e171d6f1 | 2655 | gdb_assert (ext != nullptr); |
593e3209 | 2656 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2657 | } |
2658 | ||
2659 | static char *ext_args; | |
920d2a44 AC |
2660 | static void |
2661 | show_ext_args (struct ui_file *file, int from_tty, | |
2662 | struct cmd_list_element *c, const char *value) | |
2663 | { | |
3e43a32a MS |
2664 | fprintf_filtered (file, |
2665 | _("Mapping between filename extension " | |
2666 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2667 | value); |
2668 | } | |
c906108c SS |
2669 | |
2670 | static void | |
eb4c3f4a TT |
2671 | set_ext_lang_command (const char *args, |
2672 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2673 | { |
c906108c SS |
2674 | char *cp = ext_args; |
2675 | enum language lang; | |
2676 | ||
c378eb4e | 2677 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2678 | if (*cp != '.') |
8a3fe4f8 | 2679 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2680 | |
2681 | /* Find end of first arg. */ | |
c5aa993b | 2682 | while (*cp && !isspace (*cp)) |
c906108c SS |
2683 | cp++; |
2684 | ||
2685 | if (*cp == '\0') | |
3e43a32a MS |
2686 | error (_("'%s': two arguments required -- " |
2687 | "filename extension and language"), | |
c906108c SS |
2688 | ext_args); |
2689 | ||
c378eb4e | 2690 | /* Null-terminate first arg. */ |
c5aa993b | 2691 | *cp++ = '\0'; |
c906108c SS |
2692 | |
2693 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2694 | cp = skip_spaces (cp); |
c906108c SS |
2695 | |
2696 | if (*cp == '\0') | |
3e43a32a MS |
2697 | error (_("'%s': two arguments required -- " |
2698 | "filename extension and language"), | |
c906108c SS |
2699 | ext_args); |
2700 | ||
2701 | /* Lookup the language from among those we know. */ | |
2702 | lang = language_enum (cp); | |
2703 | ||
593e3209 | 2704 | auto it = filename_language_table.begin (); |
c906108c | 2705 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2706 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2707 | { |
593e3209 | 2708 | if (it->ext == ext_args) |
3fcf0b0d TT |
2709 | break; |
2710 | } | |
c906108c | 2711 | |
593e3209 | 2712 | if (it == filename_language_table.end ()) |
c906108c | 2713 | { |
c378eb4e | 2714 | /* New file extension. */ |
c906108c SS |
2715 | add_filename_language (ext_args, lang); |
2716 | } | |
2717 | else | |
2718 | { | |
c378eb4e | 2719 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2720 | |
2721 | /* if (from_tty) */ | |
2722 | /* query ("Really make files of type %s '%s'?", */ | |
2723 | /* ext_args, language_str (lang)); */ | |
2724 | ||
593e3209 | 2725 | it->lang = lang; |
c906108c SS |
2726 | } |
2727 | } | |
2728 | ||
2729 | static void | |
1d12d88f | 2730 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2731 | { |
a3f17187 | 2732 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2733 | printf_filtered ("\n\n"); |
593e3209 SM |
2734 | for (const filename_language &entry : filename_language_table) |
2735 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2736 | language_str (entry.lang)); | |
c906108c SS |
2737 | } |
2738 | ||
c906108c | 2739 | enum language |
dd786858 | 2740 | deduce_language_from_filename (const char *filename) |
c906108c | 2741 | { |
e6a959d6 | 2742 | const char *cp; |
c906108c SS |
2743 | |
2744 | if (filename != NULL) | |
2745 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2746 | { |
593e3209 SM |
2747 | for (const filename_language &entry : filename_language_table) |
2748 | if (entry.ext == cp) | |
2749 | return entry.lang; | |
3fcf0b0d | 2750 | } |
c906108c SS |
2751 | |
2752 | return language_unknown; | |
2753 | } | |
2754 | \f | |
43f3e411 DE |
2755 | /* Allocate and initialize a new symbol table. |
2756 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2757 | |
2758 | struct symtab * | |
43f3e411 | 2759 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2760 | { |
43f3e411 DE |
2761 | struct objfile *objfile = cust->objfile; |
2762 | struct symtab *symtab | |
2763 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2764 | |
be1e3d3e | 2765 | symtab->filename = objfile->intern (filename); |
c5aa993b JM |
2766 | symtab->fullname = NULL; |
2767 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2768 | |
db0fec5c DE |
2769 | /* This can be very verbose with lots of headers. |
2770 | Only print at higher debug levels. */ | |
2771 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2772 | { |
2773 | /* Be a bit clever with debugging messages, and don't print objfile | |
2774 | every time, only when it changes. */ | |
2775 | static char *last_objfile_name = NULL; | |
2776 | ||
2777 | if (last_objfile_name == NULL | |
4262abfb | 2778 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2779 | { |
2780 | xfree (last_objfile_name); | |
4262abfb | 2781 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2782 | fprintf_filtered (gdb_stdlog, |
2783 | "Creating one or more symtabs for objfile %s ...\n", | |
2784 | last_objfile_name); | |
45cfd468 | 2785 | } |
22068491 TT |
2786 | fprintf_filtered (gdb_stdlog, |
2787 | "Created symtab %s for module %s.\n", | |
2788 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2789 | } |
2790 | ||
43f3e411 DE |
2791 | /* Add it to CUST's list of symtabs. */ |
2792 | if (cust->filetabs == NULL) | |
2793 | { | |
2794 | cust->filetabs = symtab; | |
2795 | cust->last_filetab = symtab; | |
2796 | } | |
2797 | else | |
2798 | { | |
2799 | cust->last_filetab->next = symtab; | |
2800 | cust->last_filetab = symtab; | |
2801 | } | |
2802 | ||
2803 | /* Backlink to the containing compunit symtab. */ | |
2804 | symtab->compunit_symtab = cust; | |
2805 | ||
2806 | return symtab; | |
2807 | } | |
2808 | ||
2809 | /* Allocate and initialize a new compunit. | |
2810 | NAME is the name of the main source file, if there is one, or some | |
2811 | descriptive text if there are no source files. */ | |
2812 | ||
2813 | struct compunit_symtab * | |
2814 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2815 | { | |
2816 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2817 | struct compunit_symtab); | |
2818 | const char *saved_name; | |
2819 | ||
2820 | cu->objfile = objfile; | |
2821 | ||
2822 | /* The name we record here is only for display/debugging purposes. | |
2823 | Just save the basename to avoid path issues (too long for display, | |
2824 | relative vs absolute, etc.). */ | |
2825 | saved_name = lbasename (name); | |
021887d8 | 2826 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 DE |
2827 | |
2828 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2829 | ||
2830 | if (symtab_create_debug) | |
2831 | { | |
22068491 TT |
2832 | fprintf_filtered (gdb_stdlog, |
2833 | "Created compunit symtab %s for %s.\n", | |
2834 | host_address_to_string (cu), | |
2835 | cu->name); | |
43f3e411 DE |
2836 | } |
2837 | ||
2838 | return cu; | |
2839 | } | |
2840 | ||
2841 | /* Hook CU to the objfile it comes from. */ | |
2842 | ||
2843 | void | |
2844 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2845 | { | |
2846 | cu->next = cu->objfile->compunit_symtabs; | |
2847 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2848 | } |
c906108c | 2849 | \f |
c5aa993b | 2850 | |
b15cc25c PA |
2851 | /* Reset all data structures in gdb which may contain references to |
2852 | symbol table data. */ | |
c906108c SS |
2853 | |
2854 | void | |
b15cc25c | 2855 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2856 | { |
2857 | /* Someday, we should do better than this, by only blowing away | |
2858 | the things that really need to be blown. */ | |
c0501be5 DJ |
2859 | |
2860 | /* Clear the "current" symtab first, because it is no longer valid. | |
2861 | breakpoint_re_set may try to access the current symtab. */ | |
2862 | clear_current_source_symtab_and_line (); | |
2863 | ||
c906108c | 2864 | clear_displays (); |
1bfeeb0f | 2865 | clear_last_displayed_sal (); |
c906108c | 2866 | clear_pc_function_cache (); |
76727919 | 2867 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2868 | |
8756216b DP |
2869 | /* Varobj may refer to old symbols, perform a cleanup. */ |
2870 | varobj_invalidate (); | |
2871 | ||
e700d1b2 JB |
2872 | /* Now that the various caches have been cleared, we can re_set |
2873 | our breakpoints without risking it using stale data. */ | |
2874 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2875 | breakpoint_re_set (); | |
c906108c | 2876 | } |
c906108c | 2877 | \f |
c906108c SS |
2878 | /* OVERLAYS: |
2879 | The following code implements an abstraction for debugging overlay sections. | |
2880 | ||
2881 | The target model is as follows: | |
2882 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2883 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2884 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2885 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2886 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2887 | sections should be considered to be mapped from the VMA to the LMA. |
2888 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2889 | For instance, if a section has been mapped then its contents |
c5aa993b | 2890 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2891 | |
2892 | Two levels of debugger support for overlays are available. One is | |
2893 | "manual", in which the debugger relies on the user to tell it which | |
2894 | overlays are currently mapped. This level of support is | |
2895 | implemented entirely in the core debugger, and the information about | |
2896 | whether a section is mapped is kept in the objfile->obj_section table. | |
2897 | ||
2898 | The second level of support is "automatic", and is only available if | |
2899 | the target-specific code provides functionality to read the target's | |
2900 | overlay mapping table, and translate its contents for the debugger | |
2901 | (by updating the mapped state information in the obj_section tables). | |
2902 | ||
2903 | The interface is as follows: | |
c5aa993b JM |
2904 | User commands: |
2905 | overlay map <name> -- tell gdb to consider this section mapped | |
2906 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2907 | overlay list -- list the sections that GDB thinks are mapped | |
2908 | overlay read-target -- get the target's state of what's mapped | |
2909 | overlay off/manual/auto -- set overlay debugging state | |
2910 | Functional interface: | |
2911 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2912 | section, return that section. | |
5417f6dc | 2913 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2914 | the pc, either in its VMA or its LMA |
714835d5 | 2915 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2916 | section_is_overlay(sect): true if section's VMA != LMA |
2917 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2918 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2919 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2920 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2921 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2922 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2923 | either in VMA or LMA depending on whether | |
c378eb4e | 2924 | the symbol's section is currently mapped. */ |
c906108c SS |
2925 | |
2926 | /* Overlay debugging state: */ | |
2927 | ||
d874f1e2 | 2928 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2929 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2930 | |
c906108c | 2931 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2932 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2933 | SECTION is loaded at an address different from where it will "run". */ |
2934 | ||
2935 | int | |
714835d5 | 2936 | section_is_overlay (struct obj_section *section) |
c906108c | 2937 | { |
714835d5 UW |
2938 | if (overlay_debugging && section) |
2939 | { | |
714835d5 | 2940 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2941 | |
fd361982 AM |
2942 | if (bfd_section_lma (bfd_section) != 0 |
2943 | && bfd_section_lma (bfd_section) != bfd_section_vma (bfd_section)) | |
714835d5 UW |
2944 | return 1; |
2945 | } | |
c906108c SS |
2946 | |
2947 | return 0; | |
2948 | } | |
2949 | ||
2950 | /* Function: overlay_invalidate_all (void) | |
2951 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2952 | ||
2953 | static void | |
fba45db2 | 2954 | overlay_invalidate_all (void) |
c906108c | 2955 | { |
c906108c SS |
2956 | struct obj_section *sect; |
2957 | ||
2030c079 | 2958 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
2959 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
2960 | if (section_is_overlay (sect)) | |
2961 | sect->ovly_mapped = -1; | |
c906108c SS |
2962 | } |
2963 | ||
714835d5 | 2964 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2965 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2966 | |
2967 | Access to the ovly_mapped flag is restricted to this function, so | |
2968 | that we can do automatic update. If the global flag | |
2969 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2970 | overlay_invalidate_all. If the mapped state of the particular | |
2971 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2972 | ||
714835d5 UW |
2973 | int |
2974 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2975 | { |
9216df95 UW |
2976 | struct gdbarch *gdbarch; |
2977 | ||
714835d5 | 2978 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2979 | return 0; |
2980 | ||
c5aa993b | 2981 | switch (overlay_debugging) |
c906108c SS |
2982 | { |
2983 | default: | |
d874f1e2 | 2984 | case ovly_off: |
c5aa993b | 2985 | return 0; /* overlay debugging off */ |
d874f1e2 | 2986 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2987 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 2988 | there's really nothing useful to do here (can't really go auto). */ |
08feed99 | 2989 | gdbarch = osect->objfile->arch (); |
9216df95 | 2990 | if (gdbarch_overlay_update_p (gdbarch)) |
c906108c SS |
2991 | { |
2992 | if (overlay_cache_invalid) | |
2993 | { | |
2994 | overlay_invalidate_all (); | |
2995 | overlay_cache_invalid = 0; | |
2996 | } | |
2997 | if (osect->ovly_mapped == -1) | |
9216df95 | 2998 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 2999 | } |
86a73007 | 3000 | /* fall thru */ |
d874f1e2 | 3001 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3002 | return osect->ovly_mapped == 1; |
3003 | } | |
3004 | } | |
3005 | ||
c906108c SS |
3006 | /* Function: pc_in_unmapped_range |
3007 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3008 | ||
3009 | CORE_ADDR | |
714835d5 | 3010 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3011 | { |
714835d5 UW |
3012 | if (section_is_overlay (section)) |
3013 | { | |
714835d5 | 3014 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3015 | |
714835d5 | 3016 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
fd361982 | 3017 | bfd_vma size = bfd_section_size (bfd_section); |
714835d5 UW |
3018 | CORE_ADDR offset = obj_section_offset (section); |
3019 | ||
fd361982 AM |
3020 | if (bfd_section_lma (bfd_section) + offset <= pc |
3021 | && pc < bfd_section_lma (bfd_section) + offset + size) | |
714835d5 UW |
3022 | return 1; |
3023 | } | |
c906108c | 3024 | |
c906108c SS |
3025 | return 0; |
3026 | } | |
3027 | ||
3028 | /* Function: pc_in_mapped_range | |
3029 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3030 | ||
3031 | CORE_ADDR | |
714835d5 | 3032 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3033 | { |
714835d5 UW |
3034 | if (section_is_overlay (section)) |
3035 | { | |
3036 | if (obj_section_addr (section) <= pc | |
3037 | && pc < obj_section_endaddr (section)) | |
3038 | return 1; | |
3039 | } | |
c906108c | 3040 | |
c906108c SS |
3041 | return 0; |
3042 | } | |
3043 | ||
9ec8e6a0 JB |
3044 | /* Return true if the mapped ranges of sections A and B overlap, false |
3045 | otherwise. */ | |
3b7bacac | 3046 | |
b9362cc7 | 3047 | static int |
714835d5 | 3048 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3049 | { |
714835d5 UW |
3050 | CORE_ADDR a_start = obj_section_addr (a); |
3051 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3052 | CORE_ADDR b_start = obj_section_addr (b); | |
3053 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3054 | |
3055 | return (a_start < b_end && b_start < a_end); | |
3056 | } | |
3057 | ||
c906108c SS |
3058 | /* Function: overlay_unmapped_address (PC, SECTION) |
3059 | Returns the address corresponding to PC in the unmapped (load) range. | |
3060 | May be the same as PC. */ | |
3061 | ||
3062 | CORE_ADDR | |
714835d5 | 3063 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3064 | { |
714835d5 UW |
3065 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3066 | { | |
714835d5 | 3067 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3068 | |
fd361982 AM |
3069 | return (pc + bfd_section_lma (bfd_section) |
3070 | - bfd_section_vma (bfd_section)); | |
714835d5 | 3071 | } |
c906108c SS |
3072 | |
3073 | return pc; | |
3074 | } | |
3075 | ||
3076 | /* Function: overlay_mapped_address (PC, SECTION) | |
3077 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3078 | May be the same as PC. */ | |
3079 | ||
3080 | CORE_ADDR | |
714835d5 | 3081 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3082 | { |
714835d5 UW |
3083 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3084 | { | |
714835d5 | 3085 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3086 | |
fd361982 AM |
3087 | return (pc + bfd_section_vma (bfd_section) |
3088 | - bfd_section_lma (bfd_section)); | |
714835d5 | 3089 | } |
c906108c SS |
3090 | |
3091 | return pc; | |
3092 | } | |
3093 | ||
5417f6dc | 3094 | /* Function: symbol_overlayed_address |
c906108c SS |
3095 | Return one of two addresses (relative to the VMA or to the LMA), |
3096 | depending on whether the section is mapped or not. */ | |
3097 | ||
c5aa993b | 3098 | CORE_ADDR |
714835d5 | 3099 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3100 | { |
3101 | if (overlay_debugging) | |
3102 | { | |
c378eb4e | 3103 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3104 | if (section == 0) |
3105 | return address; | |
c378eb4e MS |
3106 | /* If the symbol's section is not an overlay, just return its |
3107 | address. */ | |
c906108c SS |
3108 | if (!section_is_overlay (section)) |
3109 | return address; | |
c378eb4e | 3110 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3111 | if (section_is_mapped (section)) |
3112 | return address; | |
3113 | /* | |
3114 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3115 | * then return its LOADED address rather than its vma address!! | |
3116 | */ | |
3117 | return overlay_unmapped_address (address, section); | |
3118 | } | |
3119 | return address; | |
3120 | } | |
3121 | ||
5417f6dc | 3122 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3123 | Return the best-match overlay section for PC: |
3124 | If PC matches a mapped overlay section's VMA, return that section. | |
3125 | Else if PC matches an unmapped section's VMA, return that section. | |
3126 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3127 | ||
714835d5 | 3128 | struct obj_section * |
fba45db2 | 3129 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3130 | { |
c906108c SS |
3131 | struct obj_section *osect, *best_match = NULL; |
3132 | ||
3133 | if (overlay_debugging) | |
b631e59b | 3134 | { |
2030c079 | 3135 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3136 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3137 | if (section_is_overlay (osect)) | |
3138 | { | |
3139 | if (pc_in_mapped_range (pc, osect)) | |
3140 | { | |
3141 | if (section_is_mapped (osect)) | |
3142 | return osect; | |
3143 | else | |
3144 | best_match = osect; | |
3145 | } | |
3146 | else if (pc_in_unmapped_range (pc, osect)) | |
3147 | best_match = osect; | |
3148 | } | |
b631e59b | 3149 | } |
714835d5 | 3150 | return best_match; |
c906108c SS |
3151 | } |
3152 | ||
3153 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3154 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3155 | currently marked as MAPPED, return that section. Else return NULL. */ |
3156 | ||
714835d5 | 3157 | struct obj_section * |
fba45db2 | 3158 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3159 | { |
c906108c SS |
3160 | struct obj_section *osect; |
3161 | ||
3162 | if (overlay_debugging) | |
b631e59b | 3163 | { |
2030c079 | 3164 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3165 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3166 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3167 | return osect; | |
b631e59b | 3168 | } |
c906108c SS |
3169 | |
3170 | return NULL; | |
3171 | } | |
3172 | ||
3173 | /* Function: list_overlays_command | |
c378eb4e | 3174 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3175 | |
5d3055ad | 3176 | static void |
2cf311eb | 3177 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3178 | { |
c5aa993b | 3179 | int nmapped = 0; |
c906108c SS |
3180 | struct obj_section *osect; |
3181 | ||
3182 | if (overlay_debugging) | |
b631e59b | 3183 | { |
2030c079 | 3184 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3185 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3186 | if (section_is_mapped (osect)) | |
3187 | { | |
08feed99 | 3188 | struct gdbarch *gdbarch = objfile->arch (); |
3b9d3ac2 TT |
3189 | const char *name; |
3190 | bfd_vma lma, vma; | |
3191 | int size; | |
3192 | ||
fd361982 AM |
3193 | vma = bfd_section_vma (osect->the_bfd_section); |
3194 | lma = bfd_section_lma (osect->the_bfd_section); | |
3195 | size = bfd_section_size (osect->the_bfd_section); | |
3196 | name = bfd_section_name (osect->the_bfd_section); | |
3b9d3ac2 TT |
3197 | |
3198 | printf_filtered ("Section %s, loaded at ", name); | |
3199 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3200 | puts_filtered (" - "); | |
3201 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3202 | printf_filtered (", mapped at "); | |
3203 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3204 | puts_filtered (" - "); | |
3205 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3206 | puts_filtered ("\n"); | |
3207 | ||
3208 | nmapped++; | |
3209 | } | |
b631e59b | 3210 | } |
c906108c | 3211 | if (nmapped == 0) |
a3f17187 | 3212 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3213 | } |
3214 | ||
3215 | /* Function: map_overlay_command | |
3216 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3217 | ||
5d3055ad | 3218 | static void |
2cf311eb | 3219 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3220 | { |
c5aa993b | 3221 | struct obj_section *sec, *sec2; |
c906108c SS |
3222 | |
3223 | if (!overlay_debugging) | |
3e43a32a MS |
3224 | error (_("Overlay debugging not enabled. Use " |
3225 | "either the 'overlay auto' or\n" | |
3226 | "the 'overlay manual' command.")); | |
c906108c SS |
3227 | |
3228 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3229 | error (_("Argument required: name of an overlay section")); |
c906108c | 3230 | |
c378eb4e | 3231 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3232 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 | 3233 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
fd361982 | 3234 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
c5aa993b | 3235 | { |
3b9d3ac2 TT |
3236 | /* Now, check to see if the section is an overlay. */ |
3237 | if (!section_is_overlay (sec)) | |
3238 | continue; /* not an overlay section */ | |
3239 | ||
3240 | /* Mark the overlay as "mapped". */ | |
3241 | sec->ovly_mapped = 1; | |
3242 | ||
3243 | /* Next, make a pass and unmap any sections that are | |
3244 | overlapped by this new section: */ | |
2030c079 | 3245 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3246 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3247 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3248 | sec2)) | |
3249 | { | |
3250 | if (info_verbose) | |
3251 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
fd361982 | 3252 | bfd_section_name (sec2->the_bfd_section)); |
3b9d3ac2 TT |
3253 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
3254 | } | |
3255 | return; | |
c5aa993b | 3256 | } |
8a3fe4f8 | 3257 | error (_("No overlay section called %s"), args); |
c906108c SS |
3258 | } |
3259 | ||
3260 | /* Function: unmap_overlay_command | |
5417f6dc | 3261 | Mark the overlay section as unmapped |
c906108c SS |
3262 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3263 | ||
5d3055ad | 3264 | static void |
2cf311eb | 3265 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3266 | { |
7a270e0c | 3267 | struct obj_section *sec = NULL; |
c906108c SS |
3268 | |
3269 | if (!overlay_debugging) | |
3e43a32a MS |
3270 | error (_("Overlay debugging not enabled. " |
3271 | "Use either the 'overlay auto' or\n" | |
3272 | "the 'overlay manual' command.")); | |
c906108c SS |
3273 | |
3274 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3275 | error (_("Argument required: name of an overlay section")); |
c906108c | 3276 | |
c378eb4e | 3277 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3278 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 3279 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
fd361982 | 3280 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
3b9d3ac2 TT |
3281 | { |
3282 | if (!sec->ovly_mapped) | |
3283 | error (_("Section %s is not mapped"), args); | |
3284 | sec->ovly_mapped = 0; | |
3285 | return; | |
3286 | } | |
8a3fe4f8 | 3287 | error (_("No overlay section called %s"), args); |
c906108c SS |
3288 | } |
3289 | ||
3290 | /* Function: overlay_auto_command | |
3291 | A utility command to turn on overlay debugging. | |
c378eb4e | 3292 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3293 | |
3294 | static void | |
2cf311eb | 3295 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3296 | { |
d874f1e2 | 3297 | overlay_debugging = ovly_auto; |
1900040c | 3298 | enable_overlay_breakpoints (); |
c906108c | 3299 | if (info_verbose) |
a3f17187 | 3300 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3301 | } |
3302 | ||
3303 | /* Function: overlay_manual_command | |
3304 | A utility command to turn on overlay debugging. | |
c378eb4e | 3305 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3306 | |
3307 | static void | |
2cf311eb | 3308 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3309 | { |
d874f1e2 | 3310 | overlay_debugging = ovly_on; |
1900040c | 3311 | disable_overlay_breakpoints (); |
c906108c | 3312 | if (info_verbose) |
a3f17187 | 3313 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3314 | } |
3315 | ||
3316 | /* Function: overlay_off_command | |
3317 | A utility command to turn on overlay debugging. | |
c378eb4e | 3318 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3319 | |
3320 | static void | |
2cf311eb | 3321 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3322 | { |
d874f1e2 | 3323 | overlay_debugging = ovly_off; |
1900040c | 3324 | disable_overlay_breakpoints (); |
c906108c | 3325 | if (info_verbose) |
a3f17187 | 3326 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3327 | } |
3328 | ||
3329 | static void | |
2cf311eb | 3330 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3331 | { |
e17c207e UW |
3332 | struct gdbarch *gdbarch = get_current_arch (); |
3333 | ||
3334 | if (gdbarch_overlay_update_p (gdbarch)) | |
3335 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3336 | else |
8a3fe4f8 | 3337 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3338 | } |
3339 | ||
c378eb4e | 3340 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3341 | static struct cmd_list_element *overlaylist; |
c906108c | 3342 | |
c906108c SS |
3343 | /* Target Overlays for the "Simplest" overlay manager: |
3344 | ||
5417f6dc RM |
3345 | This is GDB's default target overlay layer. It works with the |
3346 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3347 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3348 | so targets that use a different runtime overlay manager can |
c906108c SS |
3349 | substitute their own overlay_update function and take over the |
3350 | function pointer. | |
3351 | ||
3352 | The overlay_update function pokes around in the target's data structures | |
3353 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3354 | this information. | |
3355 | ||
3356 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3357 | unsigned _novlys; /# number of overlay sections #/ |
3358 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3359 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3360 | {..., ..., ..., ...}, |
3361 | } | |
3362 | unsigned _novly_regions; /# number of overlay regions #/ | |
3363 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3364 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3365 | {..., ..., ...}, |
3366 | } | |
c906108c SS |
3367 | These functions will attempt to update GDB's mappedness state in the |
3368 | symbol section table, based on the target's mappedness state. | |
3369 | ||
3370 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3371 | attempt to detect when the cached copy is invalidated. The main | |
3372 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3373 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3374 | the target (whenever possible). */ |
c906108c SS |
3375 | |
3376 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3377 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3378 | static unsigned cache_novlys = 0; |
c906108c | 3379 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3380 | enum ovly_index |
3381 | { | |
438e1e42 | 3382 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3383 | }; |
c906108c | 3384 | |
c378eb4e | 3385 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3386 | |
c906108c | 3387 | static void |
fba45db2 | 3388 | simple_free_overlay_table (void) |
c906108c | 3389 | { |
84d53fa9 | 3390 | xfree (cache_ovly_table); |
c5aa993b | 3391 | cache_novlys = 0; |
c906108c SS |
3392 | cache_ovly_table = NULL; |
3393 | cache_ovly_table_base = 0; | |
3394 | } | |
3395 | ||
9216df95 | 3396 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3397 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3398 | |
c906108c | 3399 | static void |
9216df95 | 3400 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3401 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3402 | { |
c378eb4e | 3403 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3404 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3405 | int i; |
c906108c | 3406 | |
9216df95 | 3407 | read_memory (memaddr, buf, len * size); |
c906108c | 3408 | for (i = 0; i < len; i++) |
e17a4113 | 3409 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3410 | } |
3411 | ||
3412 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3413 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3414 | |
c5aa993b | 3415 | static int |
fba45db2 | 3416 | simple_read_overlay_table (void) |
c906108c | 3417 | { |
3b7344d5 | 3418 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3419 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3420 | struct gdbarch *gdbarch; |
3421 | int word_size; | |
e17a4113 | 3422 | enum bfd_endian byte_order; |
c906108c SS |
3423 | |
3424 | simple_free_overlay_table (); | |
9b27852e | 3425 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3426 | if (! novlys_msym.minsym) |
c906108c | 3427 | { |
8a3fe4f8 | 3428 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3429 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3430 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3431 | return 0; |
c906108c | 3432 | } |
0d43edd1 | 3433 | |
7c7b6655 TT |
3434 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3435 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3436 | { |
8a3fe4f8 | 3437 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3438 | "`_ovly_table' array\n" |
8a3fe4f8 | 3439 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3440 | return 0; |
3441 | } | |
3442 | ||
08feed99 | 3443 | gdbarch = ovly_table_msym.objfile->arch (); |
9216df95 | 3444 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3445 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3446 | |
77e371c0 TT |
3447 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3448 | 4, byte_order); | |
0d43edd1 | 3449 | cache_ovly_table |
224c3ddb | 3450 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3451 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3452 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3453 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3454 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3455 | |
c5aa993b | 3456 | return 1; /* SUCCESS */ |
c906108c SS |
3457 | } |
3458 | ||
5417f6dc | 3459 | /* Function: simple_overlay_update_1 |
c906108c SS |
3460 | A helper function for simple_overlay_update. Assuming a cached copy |
3461 | of _ovly_table exists, look through it to find an entry whose vma, | |
3462 | lma and size match those of OSECT. Re-read the entry and make sure | |
3463 | it still matches OSECT (else the table may no longer be valid). | |
3464 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3465 | success, 0 for failure. */ | |
3466 | ||
3467 | static int | |
fba45db2 | 3468 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3469 | { |
764c99c1 | 3470 | int i; |
fbd35540 | 3471 | asection *bsect = osect->the_bfd_section; |
08feed99 | 3472 | struct gdbarch *gdbarch = osect->objfile->arch (); |
9216df95 | 3473 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3474 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3475 | |
c906108c | 3476 | for (i = 0; i < cache_novlys; i++) |
fd361982 AM |
3477 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3478 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c | 3479 | { |
9216df95 UW |
3480 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3481 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3482 | 4, word_size, byte_order); |
fd361982 AM |
3483 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3484 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c SS |
3485 | { |
3486 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3487 | return 1; | |
3488 | } | |
c378eb4e | 3489 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3490 | return 0; |
3491 | } | |
3492 | return 0; | |
3493 | } | |
3494 | ||
3495 | /* Function: simple_overlay_update | |
5417f6dc RM |
3496 | If OSECT is NULL, then update all sections' mapped state |
3497 | (after re-reading the entire target _ovly_table). | |
3498 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3499 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3500 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3501 | re-read the entire cache, and go ahead and update all sections. */ |
3502 | ||
1c772458 | 3503 | void |
fba45db2 | 3504 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3505 | { |
c378eb4e | 3506 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3507 | if (osect) |
c378eb4e | 3508 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3509 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3510 | { |
3511 | /* Does its cached location match what's currently in the | |
3512 | symtab? */ | |
3b7344d5 | 3513 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3514 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3515 | ||
3b7344d5 | 3516 | if (minsym.minsym == NULL) |
9cc89665 MS |
3517 | error (_("Error reading inferior's overlay table: couldn't " |
3518 | "find `_ovly_table' array\n" | |
3519 | "in inferior. Use `overlay manual' mode.")); | |
3520 | ||
77e371c0 | 3521 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3522 | /* Then go ahead and try to look up this single section in |
3523 | the cache. */ | |
3524 | if (simple_overlay_update_1 (osect)) | |
3525 | /* Found it! We're done. */ | |
3526 | return; | |
3527 | } | |
c906108c SS |
3528 | |
3529 | /* Cached table no good: need to read the entire table anew. | |
3530 | Or else we want all the sections, in which case it's actually | |
3531 | more efficient to read the whole table in one block anyway. */ | |
3532 | ||
0d43edd1 JB |
3533 | if (! simple_read_overlay_table ()) |
3534 | return; | |
3535 | ||
c378eb4e | 3536 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3537 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3538 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3539 | if (section_is_overlay (osect)) | |
3540 | { | |
3541 | int i; | |
3542 | asection *bsect = osect->the_bfd_section; | |
3543 | ||
3544 | for (i = 0; i < cache_novlys; i++) | |
fd361982 AM |
3545 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3546 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
3b9d3ac2 TT |
3547 | { /* obj_section matches i'th entry in ovly_table. */ |
3548 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3549 | break; /* finished with inner for loop: break out. */ | |
3550 | } | |
3551 | } | |
c906108c SS |
3552 | } |
3553 | ||
ac8035ab TG |
3554 | /* Default implementation for sym_relocate. */ |
3555 | ||
ac8035ab TG |
3556 | bfd_byte * |
3557 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3558 | bfd_byte *buf) | |
3559 | { | |
3019eac3 DE |
3560 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3561 | DWO file. */ | |
3562 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3563 | |
3564 | /* We're only interested in sections with relocation | |
3565 | information. */ | |
3566 | if ((sectp->flags & SEC_RELOC) == 0) | |
3567 | return NULL; | |
3568 | ||
3569 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3570 | all sections begin at 0. */ | |
ad7277da TT |
3571 | for (asection *sect : gdb_bfd_sections (abfd)) |
3572 | { | |
3573 | sect->output_section = sect; | |
3574 | sect->output_offset = 0; | |
3575 | } | |
ac8035ab TG |
3576 | |
3577 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3578 | } | |
3579 | ||
086df311 DJ |
3580 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3581 | contents are stored in BUF if it is non-NULL, or returned in a | |
3582 | malloc'd buffer otherwise. | |
3583 | ||
3584 | For some platforms and debug info formats, shared libraries contain | |
3585 | relocations against the debug sections (particularly for DWARF-2; | |
3586 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3587 | the version of the linker in use). Also, ELF object files naturally | |
3588 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3589 | the relocations in order to get the locations of symbols correct. |
3590 | Another example that may require relocation processing, is the | |
3591 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3592 | debug section. */ | |
086df311 DJ |
3593 | |
3594 | bfd_byte * | |
ac8035ab TG |
3595 | symfile_relocate_debug_section (struct objfile *objfile, |
3596 | asection *sectp, bfd_byte *buf) | |
086df311 | 3597 | { |
ac8035ab | 3598 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3599 | |
ac8035ab | 3600 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3601 | } |
c906108c | 3602 | |
62982abd | 3603 | symfile_segment_data_up |
31d99776 DJ |
3604 | get_symfile_segment_data (bfd *abfd) |
3605 | { | |
00b5771c | 3606 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3607 | |
3608 | if (sf == NULL) | |
3609 | return NULL; | |
3610 | ||
3611 | return sf->sym_segments (abfd); | |
3612 | } | |
3613 | ||
28c32713 JB |
3614 | /* Given: |
3615 | - DATA, containing segment addresses from the object file ABFD, and | |
3616 | the mapping from ABFD's sections onto the segments that own them, | |
3617 | and | |
3618 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3619 | segment addresses reported by the target, | |
3620 | store the appropriate offsets for each section in OFFSETS. | |
3621 | ||
3622 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3623 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3624 | ||
8d385431 DJ |
3625 | If there are more entries, then ignore the extra. The target may |
3626 | not be able to distinguish between an empty data segment and a | |
3627 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3628 | |
31d99776 | 3629 | int |
3189cb12 DE |
3630 | symfile_map_offsets_to_segments (bfd *abfd, |
3631 | const struct symfile_segment_data *data, | |
6a053cb1 | 3632 | section_offsets &offsets, |
31d99776 DJ |
3633 | int num_segment_bases, |
3634 | const CORE_ADDR *segment_bases) | |
3635 | { | |
3636 | int i; | |
3637 | asection *sect; | |
3638 | ||
28c32713 JB |
3639 | /* It doesn't make sense to call this function unless you have some |
3640 | segment base addresses. */ | |
202b96c1 | 3641 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3642 | |
31d99776 DJ |
3643 | /* If we do not have segment mappings for the object file, we |
3644 | can not relocate it by segments. */ | |
3645 | gdb_assert (data != NULL); | |
68b888ff | 3646 | gdb_assert (data->segments.size () > 0); |
31d99776 | 3647 | |
31d99776 DJ |
3648 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3649 | { | |
31d99776 DJ |
3650 | int which = data->segment_info[i]; |
3651 | ||
68b888ff | 3652 | gdb_assert (0 <= which && which <= data->segments.size ()); |
28c32713 JB |
3653 | |
3654 | /* Don't bother computing offsets for sections that aren't | |
3655 | loaded as part of any segment. */ | |
3656 | if (! which) | |
3657 | continue; | |
3658 | ||
3659 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3660 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3661 | if (which > num_segment_bases) |
28c32713 | 3662 | which = num_segment_bases; |
31d99776 | 3663 | |
68b888ff | 3664 | offsets[i] = segment_bases[which - 1] - data->segments[which - 1].base; |
31d99776 DJ |
3665 | } |
3666 | ||
3667 | return 1; | |
3668 | } | |
3669 | ||
3670 | static void | |
3671 | symfile_find_segment_sections (struct objfile *objfile) | |
3672 | { | |
3673 | bfd *abfd = objfile->obfd; | |
3674 | int i; | |
3675 | asection *sect; | |
31d99776 | 3676 | |
62982abd SM |
3677 | symfile_segment_data_up data |
3678 | = get_symfile_segment_data (objfile->obfd); | |
31d99776 DJ |
3679 | if (data == NULL) |
3680 | return; | |
3681 | ||
68b888ff | 3682 | if (data->segments.size () != 1 && data->segments.size () != 2) |
62982abd | 3683 | return; |
31d99776 DJ |
3684 | |
3685 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3686 | { | |
31d99776 DJ |
3687 | int which = data->segment_info[i]; |
3688 | ||
3689 | if (which == 1) | |
3690 | { | |
3691 | if (objfile->sect_index_text == -1) | |
3692 | objfile->sect_index_text = sect->index; | |
3693 | ||
3694 | if (objfile->sect_index_rodata == -1) | |
3695 | objfile->sect_index_rodata = sect->index; | |
3696 | } | |
3697 | else if (which == 2) | |
3698 | { | |
3699 | if (objfile->sect_index_data == -1) | |
3700 | objfile->sect_index_data = sect->index; | |
3701 | ||
3702 | if (objfile->sect_index_bss == -1) | |
3703 | objfile->sect_index_bss = sect->index; | |
3704 | } | |
3705 | } | |
31d99776 DJ |
3706 | } |
3707 | ||
76ad5e1e NB |
3708 | /* Listen for free_objfile events. */ |
3709 | ||
3710 | static void | |
3711 | symfile_free_objfile (struct objfile *objfile) | |
3712 | { | |
c33b2f12 MM |
3713 | /* Remove the target sections owned by this objfile. */ |
3714 | if (objfile != NULL) | |
76ad5e1e NB |
3715 | remove_target_sections ((void *) objfile); |
3716 | } | |
3717 | ||
540c2971 DE |
3718 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3719 | Expand all symtabs that match the specified criteria. | |
3720 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3721 | ||
3722 | void | |
14bc53a8 PA |
3723 | expand_symtabs_matching |
3724 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3725 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3726 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3727 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3728 | enum search_domain kind) | |
540c2971 | 3729 | { |
2030c079 | 3730 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3731 | { |
3732 | if (objfile->sf) | |
3733 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
c1a66c06 | 3734 | &lookup_name, |
aed57c53 TT |
3735 | symbol_matcher, |
3736 | expansion_notify, kind); | |
3737 | } | |
540c2971 DE |
3738 | } |
3739 | ||
3740 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3741 | Map function FUN over every file. | |
3742 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3743 | ||
3744 | void | |
bb4142cf DE |
3745 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3746 | int need_fullname) | |
540c2971 | 3747 | { |
2030c079 | 3748 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3749 | { |
3750 | if (objfile->sf) | |
3751 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3752 | need_fullname); | |
3753 | } | |
540c2971 DE |
3754 | } |
3755 | ||
32fa66eb SM |
3756 | #if GDB_SELF_TEST |
3757 | ||
3758 | namespace selftests { | |
3759 | namespace filename_language { | |
3760 | ||
32fa66eb SM |
3761 | static void test_filename_language () |
3762 | { | |
3763 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3764 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3765 | |
3766 | /* Test deducing an unknown extension. */ | |
3767 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3768 | SELF_CHECK (lang == language_unknown); | |
3769 | ||
3770 | /* Test deducing a known extension. */ | |
3771 | lang = deduce_language_from_filename ("myfile.c"); | |
3772 | SELF_CHECK (lang == language_c); | |
3773 | ||
3774 | /* Test adding a new extension using the internal API. */ | |
3775 | add_filename_language (".blah", language_pascal); | |
3776 | lang = deduce_language_from_filename ("myfile.blah"); | |
3777 | SELF_CHECK (lang == language_pascal); | |
3778 | } | |
3779 | ||
3780 | static void | |
3781 | test_set_ext_lang_command () | |
3782 | { | |
3783 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3784 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3785 | |
3786 | /* Confirm that the .hello extension is not known. */ | |
3787 | language lang = deduce_language_from_filename ("cake.hello"); | |
3788 | SELF_CHECK (lang == language_unknown); | |
3789 | ||
3790 | /* Test adding a new extension using the CLI command. */ | |
b02f78f9 | 3791 | auto args_holder = make_unique_xstrdup (".hello rust"); |
32fa66eb SM |
3792 | ext_args = args_holder.get (); |
3793 | set_ext_lang_command (NULL, 1, NULL); | |
3794 | ||
3795 | lang = deduce_language_from_filename ("cake.hello"); | |
3796 | SELF_CHECK (lang == language_rust); | |
3797 | ||
3798 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3799 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3800 | args_holder.reset (xstrdup (".hello pascal")); |
3801 | ext_args = args_holder.get (); | |
3802 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3803 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3804 | |
3805 | lang = deduce_language_from_filename ("cake.hello"); | |
3806 | SELF_CHECK (lang == language_pascal); | |
3807 | SELF_CHECK (size_before == size_after); | |
3808 | } | |
3809 | ||
3810 | } /* namespace filename_language */ | |
3811 | } /* namespace selftests */ | |
3812 | ||
3813 | #endif /* GDB_SELF_TEST */ | |
3814 | ||
6c265988 | 3815 | void _initialize_symfile (); |
c906108c | 3816 | void |
6c265988 | 3817 | _initialize_symfile () |
c906108c SS |
3818 | { |
3819 | struct cmd_list_element *c; | |
c5aa993b | 3820 | |
76727919 | 3821 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3822 | |
97cbe998 | 3823 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3824 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3825 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3826 | faster.\n\ |
3827 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3828 | symbolic debug information." | |
8ca2f0b9 | 3829 | |
1a966eab AC |
3830 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3831 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3832 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3833 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3834 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3835 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3836 | set_cmd_completer (c, filename_completer); |
c906108c | 3837 | |
1a966eab | 3838 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3839 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3840 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3841 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3842 | ADDR is the starting address of the file's text.\n\ |
3843 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3844 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3845 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3846 | OFF is an optional offset which is added to the default load addresses\n\ | |
3847 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3848 | READNOW_READNEVER_HELP), |
c906108c | 3849 | &cmdlist); |
5ba2abeb | 3850 | set_cmd_completer (c, filename_completer); |
c906108c | 3851 | |
63644780 NB |
3852 | c = add_cmd ("remove-symbol-file", class_files, |
3853 | remove_symbol_file_command, _("\ | |
3854 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3855 | Usage: remove-symbol-file FILENAME\n\ | |
3856 | remove-symbol-file -a ADDRESS\n\ | |
3857 | The file to remove can be identified by its filename or by an address\n\ | |
3858 | that lies within the boundaries of this symbol file in memory."), | |
3859 | &cmdlist); | |
3860 | ||
1a966eab | 3861 | c = add_cmd ("load", class_files, load_command, _("\ |
590042fc PW |
3862 | Dynamically load FILE into the running program.\n\ |
3863 | FILE symbols are recorded for access from GDB.\n\ | |
8ca2f0b9 | 3864 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3865 | An optional load OFFSET may also be given as a literal address.\n\ |
3866 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3867 | on its own."), &cmdlist); |
5ba2abeb | 3868 | set_cmd_completer (c, filename_completer); |
c906108c | 3869 | |
0743fc83 TT |
3870 | add_basic_prefix_cmd ("overlay", class_support, |
3871 | _("Commands for debugging overlays."), &overlaylist, | |
3872 | "overlay ", 0, &cmdlist); | |
c906108c | 3873 | |
57b4f16e PW |
3874 | add_com_alias ("ovly", "overlay", class_support, 1); |
3875 | add_com_alias ("ov", "overlay", class_support, 1); | |
c906108c | 3876 | |
c5aa993b | 3877 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3878 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3879 | |
c5aa993b | 3880 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3881 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3882 | |
c5aa993b | 3883 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3884 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3885 | |
c5aa993b | 3886 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3887 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3888 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3889 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3890 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3891 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3892 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3893 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3894 | |
3895 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3896 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3897 | &ext_args, _("\ | |
3898 | Set mapping between filename extension and source language."), _("\ | |
3899 | Show mapping between filename extension and source language."), _("\ | |
3900 | Usage: set extension-language .foo bar"), | |
3901 | set_ext_lang_command, | |
920d2a44 | 3902 | show_ext_args, |
26c41df3 | 3903 | &setlist, &showlist); |
c906108c | 3904 | |
c5aa993b | 3905 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3906 | _("All filename extensions associated with a source language.")); |
917317f4 | 3907 | |
525226b5 AC |
3908 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3909 | &debug_file_directory, _("\ | |
24ddea62 JK |
3910 | Set the directories where separate debug symbols are searched for."), _("\ |
3911 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3912 | Separate debug symbols are first searched for in the same\n\ |
3913 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3914 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3915 | each global debug-file-directory component prepended."), |
525226b5 | 3916 | NULL, |
920d2a44 | 3917 | show_debug_file_directory, |
525226b5 | 3918 | &setlist, &showlist); |
770e7fc7 DE |
3919 | |
3920 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3921 | print_symbol_loading_enums, &print_symbol_loading, | |
3922 | _("\ | |
3923 | Set printing of symbol loading messages."), _("\ | |
3924 | Show printing of symbol loading messages."), _("\ | |
3925 | off == turn all messages off\n\ | |
3926 | brief == print messages for the executable,\n\ | |
3927 | and brief messages for shared libraries\n\ | |
3928 | full == print messages for the executable,\n\ | |
3929 | and messages for each shared library."), | |
3930 | NULL, | |
3931 | NULL, | |
3932 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3933 | |
3934 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3935 | &separate_debug_file_debug, _("\ | |
3936 | Set printing of separate debug info file search debug."), _("\ | |
3937 | Show printing of separate debug info file search debug."), _("\ | |
3938 | When on, GDB prints the searched locations while looking for separate debug \ | |
3939 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3940 | |
3941 | #if GDB_SELF_TEST | |
3942 | selftests::register_test | |
3943 | ("filename_language", selftests::filename_language::test_filename_language); | |
3944 | selftests::register_test | |
3945 | ("set_ext_lang_command", | |
3946 | selftests::filename_language::test_set_ext_lang_command); | |
3947 | #endif | |
c906108c | 3948 | } |