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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
213516ef | 3 | Copyright (C) 1990-2023 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" |
bf31fd38 | 43 | #include "gdbsupport/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" |
7904e961 | 64 | #include "gdbsupport/buildargv.h" |
c906108c | 65 | |
c906108c SS |
66 | #include <sys/types.h> |
67 | #include <fcntl.h> | |
53ce3c39 | 68 | #include <sys/stat.h> |
c906108c | 69 | #include <ctype.h> |
dcb07cfa | 70 | #include <chrono> |
37e136b1 | 71 | #include <algorithm> |
c906108c | 72 | |
3e43a32a MS |
73 | int (*deprecated_ui_load_progress_hook) (const char *section, |
74 | unsigned long num); | |
9a4105ab | 75 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
76 | unsigned long section_sent, |
77 | unsigned long section_size, | |
78 | unsigned long total_sent, | |
c2d11a7d | 79 | unsigned long total_size); |
769d7dc4 AC |
80 | void (*deprecated_pre_add_symbol_hook) (const char *); |
81 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 82 | |
286526c1 TT |
83 | using clear_symtab_users_cleanup |
84 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 85 | |
c378eb4e | 86 | /* Global variables owned by this file. */ |
fe7a351a SM |
87 | |
88 | /* See symfile.h. */ | |
89 | ||
90 | int readnow_symbol_files; | |
91 | ||
92 | /* See symfile.h. */ | |
93 | ||
94 | int readnever_symbol_files; | |
c906108c | 95 | |
c378eb4e | 96 | /* Functions this file defines. */ |
c906108c | 97 | |
ecf45d2c | 98 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 99 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 100 | |
00b5771c | 101 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 102 | |
a14ed312 | 103 | static void overlay_invalidate_all (void); |
c906108c | 104 | |
a14ed312 | 105 | static void simple_free_overlay_table (void); |
c906108c | 106 | |
e17a4113 UW |
107 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
108 | enum bfd_endian); | |
c906108c | 109 | |
a14ed312 | 110 | static int simple_read_overlay_table (void); |
c906108c | 111 | |
a14ed312 | 112 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 113 | |
31d99776 DJ |
114 | static void symfile_find_segment_sections (struct objfile *objfile); |
115 | ||
c906108c SS |
116 | /* List of all available sym_fns. On gdb startup, each object file reader |
117 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 118 | prepared to read. */ |
c906108c | 119 | |
905014d7 | 120 | struct registered_sym_fns |
c256e171 | 121 | { |
905014d7 SM |
122 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
123 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
124 | {} | |
125 | ||
c256e171 DE |
126 | /* BFD flavour that we handle. */ |
127 | enum bfd_flavour sym_flavour; | |
128 | ||
129 | /* The "vtable" of symbol functions. */ | |
130 | const struct sym_fns *sym_fns; | |
905014d7 | 131 | }; |
c256e171 | 132 | |
905014d7 | 133 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 134 | |
770e7fc7 DE |
135 | /* Values for "set print symbol-loading". */ |
136 | ||
137 | const char print_symbol_loading_off[] = "off"; | |
138 | const char print_symbol_loading_brief[] = "brief"; | |
139 | const char print_symbol_loading_full[] = "full"; | |
140 | static const char *print_symbol_loading_enums[] = | |
141 | { | |
142 | print_symbol_loading_off, | |
143 | print_symbol_loading_brief, | |
144 | print_symbol_loading_full, | |
145 | NULL | |
146 | }; | |
147 | static const char *print_symbol_loading = print_symbol_loading_full; | |
148 | ||
f2f24aa9 | 149 | /* See symfile.h. */ |
c906108c | 150 | |
491144b5 | 151 | bool auto_solib_add = true; |
c906108c | 152 | \f |
c5aa993b | 153 | |
770e7fc7 DE |
154 | /* Return non-zero if symbol-loading messages should be printed. |
155 | FROM_TTY is the standard from_tty argument to gdb commands. | |
156 | If EXEC is non-zero the messages are for the executable. | |
157 | Otherwise, messages are for shared libraries. | |
158 | If FULL is non-zero then the caller is printing a detailed message. | |
159 | E.g., the message includes the shared library name. | |
160 | Otherwise, the caller is printing a brief "summary" message. */ | |
161 | ||
162 | int | |
163 | print_symbol_loading_p (int from_tty, int exec, int full) | |
164 | { | |
165 | if (!from_tty && !info_verbose) | |
166 | return 0; | |
167 | ||
168 | if (exec) | |
169 | { | |
170 | /* We don't check FULL for executables, there are few such | |
171 | messages, therefore brief == full. */ | |
172 | return print_symbol_loading != print_symbol_loading_off; | |
173 | } | |
174 | if (full) | |
175 | return print_symbol_loading == print_symbol_loading_full; | |
176 | return print_symbol_loading == print_symbol_loading_brief; | |
177 | } | |
178 | ||
0d14a781 | 179 | /* True if we are reading a symbol table. */ |
c906108c SS |
180 | |
181 | int currently_reading_symtab = 0; | |
182 | ||
ccefe4c4 TT |
183 | /* Increment currently_reading_symtab and return a cleanup that can be |
184 | used to decrement it. */ | |
3b7bacac | 185 | |
c83dd867 | 186 | scoped_restore_tmpl<int> |
ccefe4c4 | 187 | increment_reading_symtab (void) |
c906108c | 188 | { |
c83dd867 TT |
189 | gdb_assert (currently_reading_symtab >= 0); |
190 | return make_scoped_restore (¤tly_reading_symtab, | |
191 | currently_reading_symtab + 1); | |
c906108c SS |
192 | } |
193 | ||
5417f6dc | 194 | /* Remember the lowest-addressed loadable section we've seen. |
c906108c SS |
195 | |
196 | In case of equal vmas, the section with the largest size becomes the | |
197 | lowest-addressed loadable section. | |
198 | ||
199 | If the vmas and sizes are equal, the last section is considered the | |
200 | lowest-addressed loadable section. */ | |
201 | ||
ad7277da TT |
202 | static void |
203 | find_lowest_section (asection *sect, asection **lowest) | |
c906108c | 204 | { |
fd361982 | 205 | if (0 == (bfd_section_flags (sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
206 | return; |
207 | if (!*lowest) | |
208 | *lowest = sect; /* First loadable section */ | |
fd361982 | 209 | else if (bfd_section_vma (*lowest) > bfd_section_vma (sect)) |
c906108c | 210 | *lowest = sect; /* A lower loadable section */ |
fd361982 AM |
211 | else if (bfd_section_vma (*lowest) == bfd_section_vma (sect) |
212 | && (bfd_section_size (*lowest) <= bfd_section_size (sect))) | |
c906108c SS |
213 | *lowest = sect; |
214 | } | |
215 | ||
62557bbc | 216 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 217 | an existing section table. */ |
62557bbc | 218 | |
37e136b1 | 219 | section_addr_info |
bb2a6777 | 220 | build_section_addr_info_from_section_table (const target_section_table &table) |
62557bbc | 221 | { |
37e136b1 | 222 | section_addr_info sap; |
62557bbc | 223 | |
d7a78e5c | 224 | for (const target_section &stp : table) |
62557bbc | 225 | { |
bb2a6777 | 226 | struct bfd_section *asect = stp.the_bfd_section; |
2b2848e2 DE |
227 | bfd *abfd = asect->owner; |
228 | ||
fd361982 | 229 | if (bfd_section_flags (asect) & (SEC_ALLOC | SEC_LOAD) |
d7a78e5c | 230 | && sap.size () < table.size ()) |
bb2a6777 | 231 | sap.emplace_back (stp.addr, |
fd361982 | 232 | bfd_section_name (asect), |
37e136b1 | 233 | gdb_bfd_section_index (abfd, asect)); |
62557bbc KB |
234 | } |
235 | ||
236 | return sap; | |
237 | } | |
238 | ||
82ccf5a5 | 239 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 240 | |
37e136b1 | 241 | static section_addr_info |
82ccf5a5 | 242 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 243 | { |
089b4803 TG |
244 | struct bfd_section *sec; |
245 | ||
37e136b1 TT |
246 | section_addr_info sap; |
247 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
fd361982 AM |
248 | if (bfd_section_flags (sec) & (SEC_ALLOC | SEC_LOAD)) |
249 | sap.emplace_back (bfd_section_vma (sec), | |
250 | bfd_section_name (sec), | |
37e136b1 | 251 | gdb_bfd_section_index (abfd, sec)); |
d76488d8 | 252 | |
089b4803 TG |
253 | return sap; |
254 | } | |
255 | ||
82ccf5a5 JK |
256 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
257 | ||
37e136b1 | 258 | section_addr_info |
82ccf5a5 JK |
259 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
260 | { | |
82ccf5a5 JK |
261 | int i; |
262 | ||
263 | /* Before reread_symbols gets rewritten it is not safe to call: | |
264 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
265 | */ | |
98badbfd TT |
266 | section_addr_info sap |
267 | = build_section_addr_info_from_bfd (objfile->obfd.get ()); | |
37e136b1 | 268 | for (i = 0; i < sap.size (); i++) |
82ccf5a5 | 269 | { |
37e136b1 | 270 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 271 | |
6a053cb1 | 272 | sap[i].addr += objfile->section_offsets[sectindex]; |
82ccf5a5 JK |
273 | } |
274 | return sap; | |
275 | } | |
62557bbc | 276 | |
e8289572 | 277 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 278 | |
e8289572 JB |
279 | static void |
280 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 281 | { |
e8289572 | 282 | asection *sect; |
c906108c | 283 | int i; |
5417f6dc | 284 | |
98badbfd | 285 | sect = bfd_get_section_by_name (objfile->obfd.get (), ".text"); |
5417f6dc | 286 | if (sect) |
b8fbeb18 EZ |
287 | objfile->sect_index_text = sect->index; |
288 | ||
98badbfd | 289 | sect = bfd_get_section_by_name (objfile->obfd.get (), ".data"); |
5417f6dc | 290 | if (sect) |
b8fbeb18 EZ |
291 | objfile->sect_index_data = sect->index; |
292 | ||
98badbfd | 293 | sect = bfd_get_section_by_name (objfile->obfd.get (), ".bss"); |
5417f6dc | 294 | if (sect) |
b8fbeb18 EZ |
295 | objfile->sect_index_bss = sect->index; |
296 | ||
98badbfd | 297 | sect = bfd_get_section_by_name (objfile->obfd.get (), ".rodata"); |
5417f6dc | 298 | if (sect) |
b8fbeb18 EZ |
299 | objfile->sect_index_rodata = sect->index; |
300 | ||
bbcd32ad FF |
301 | /* This is where things get really weird... We MUST have valid |
302 | indices for the various sect_index_* members or gdb will abort. | |
303 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
304 | accomodate that. First, check for a file with the standard |
305 | one or two segments. */ | |
306 | ||
307 | symfile_find_segment_sections (objfile); | |
308 | ||
309 | /* Except when explicitly adding symbol files at some address, | |
310 | section_offsets contains nothing but zeros, so it doesn't matter | |
311 | which slot in section_offsets the individual sect_index_* members | |
312 | index into. So if they are all zero, it is safe to just point | |
313 | all the currently uninitialized indices to the first slot. But | |
314 | beware: if this is the main executable, it may be relocated | |
315 | later, e.g. by the remote qOffsets packet, and then this will | |
316 | be wrong! That's why we try segments first. */ | |
bbcd32ad | 317 | |
6a053cb1 | 318 | for (i = 0; i < objfile->section_offsets.size (); i++) |
bbcd32ad | 319 | { |
6a053cb1 | 320 | if (objfile->section_offsets[i] != 0) |
bbcd32ad FF |
321 | { |
322 | break; | |
323 | } | |
324 | } | |
6a053cb1 | 325 | if (i == objfile->section_offsets.size ()) |
bbcd32ad FF |
326 | { |
327 | if (objfile->sect_index_text == -1) | |
328 | objfile->sect_index_text = 0; | |
329 | if (objfile->sect_index_data == -1) | |
330 | objfile->sect_index_data = 0; | |
331 | if (objfile->sect_index_bss == -1) | |
332 | objfile->sect_index_bss = 0; | |
333 | if (objfile->sect_index_rodata == -1) | |
334 | objfile->sect_index_rodata = 0; | |
335 | } | |
b8fbeb18 | 336 | } |
c906108c | 337 | |
c1bd25fd DJ |
338 | /* Find a unique offset to use for loadable section SECT if |
339 | the user did not provide an offset. */ | |
340 | ||
2c0b251b | 341 | static void |
ad7277da TT |
342 | place_section (bfd *abfd, asection *sect, section_offsets &offsets, |
343 | CORE_ADDR &lowest) | |
c1bd25fd | 344 | { |
6a053cb1 | 345 | CORE_ADDR start_addr; |
c1bd25fd | 346 | int done; |
fd361982 | 347 | ULONGEST align = ((ULONGEST) 1) << bfd_section_alignment (sect); |
c1bd25fd | 348 | |
2711e456 | 349 | /* We are only interested in allocated sections. */ |
fd361982 | 350 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
351 | return; |
352 | ||
353 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 354 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
355 | return; |
356 | ||
357 | /* Otherwise, let's try to find a place for the section. */ | |
ad7277da | 358 | start_addr = (lowest + align - 1) & -align; |
3bd72c6f | 359 | |
c1bd25fd DJ |
360 | do { |
361 | asection *cur_sec; | |
c1bd25fd | 362 | |
c1bd25fd DJ |
363 | done = 1; |
364 | ||
365 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
366 | { | |
367 | int indx = cur_sec->index; | |
c1bd25fd DJ |
368 | |
369 | /* We don't need to compare against ourself. */ | |
370 | if (cur_sec == sect) | |
371 | continue; | |
372 | ||
2711e456 | 373 | /* We can only conflict with allocated sections. */ |
fd361982 | 374 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
c1bd25fd DJ |
375 | continue; |
376 | ||
377 | /* If the section offset is 0, either the section has not been placed | |
378 | yet, or it was the lowest section placed (in which case LOWEST | |
379 | will be past its end). */ | |
380 | if (offsets[indx] == 0) | |
381 | continue; | |
382 | ||
383 | /* If this section would overlap us, then we must move up. */ | |
fd361982 AM |
384 | if (start_addr + bfd_section_size (sect) > offsets[indx] |
385 | && start_addr < offsets[indx] + bfd_section_size (cur_sec)) | |
c1bd25fd | 386 | { |
fd361982 | 387 | start_addr = offsets[indx] + bfd_section_size (cur_sec); |
c1bd25fd DJ |
388 | start_addr = (start_addr + align - 1) & -align; |
389 | done = 0; | |
3bd72c6f | 390 | break; |
c1bd25fd DJ |
391 | } |
392 | ||
393 | /* Otherwise, we appear to be OK. So far. */ | |
394 | } | |
395 | } | |
396 | while (!done); | |
397 | ||
65cf3563 | 398 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
ad7277da | 399 | lowest = start_addr + bfd_section_size (sect); |
c1bd25fd | 400 | } |
e8289572 | 401 | |
4f7ae6f5 | 402 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
6a053cb1 | 403 | filled-in) by addr_info_make_relative into SECTION_OFFSETS. */ |
e8289572 JB |
404 | |
405 | void | |
6a053cb1 | 406 | relative_addr_info_to_section_offsets (section_offsets §ion_offsets, |
37e136b1 | 407 | const section_addr_info &addrs) |
e8289572 JB |
408 | { |
409 | int i; | |
410 | ||
6a053cb1 | 411 | section_offsets.assign (section_offsets.size (), 0); |
e8289572 | 412 | |
c378eb4e | 413 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 414 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 415 | { |
3189cb12 | 416 | const struct other_sections *osp; |
e8289572 | 417 | |
37e136b1 | 418 | osp = &addrs[i]; |
5488dafb | 419 | if (osp->sectindex == -1) |
24b21115 | 420 | continue; |
e8289572 | 421 | |
c378eb4e | 422 | /* Record all sections in offsets. */ |
e8289572 | 423 | /* The section_offsets in the objfile are here filled in using |
dda83cd7 | 424 | the BFD index. */ |
6a053cb1 | 425 | section_offsets[osp->sectindex] = osp->addr; |
75242ef4 JK |
426 | } |
427 | } | |
428 | ||
1276c759 JK |
429 | /* Transform section name S for a name comparison. prelink can split section |
430 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
431 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
432 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
433 | (`.sbss') section has invalid (increased) virtual address. */ | |
434 | ||
435 | static const char * | |
436 | addr_section_name (const char *s) | |
437 | { | |
438 | if (strcmp (s, ".dynbss") == 0) | |
439 | return ".bss"; | |
440 | if (strcmp (s, ".sdynbss") == 0) | |
441 | return ".sbss"; | |
442 | ||
443 | return s; | |
444 | } | |
445 | ||
37e136b1 TT |
446 | /* std::sort comparator for addrs_section_sort. Sort entries in |
447 | ascending order by their (name, sectindex) pair. sectindex makes | |
448 | the sort by name stable. */ | |
82ccf5a5 | 449 | |
37e136b1 TT |
450 | static bool |
451 | addrs_section_compar (const struct other_sections *a, | |
452 | const struct other_sections *b) | |
82ccf5a5 | 453 | { |
22e048c9 | 454 | int retval; |
82ccf5a5 | 455 | |
37e136b1 TT |
456 | retval = strcmp (addr_section_name (a->name.c_str ()), |
457 | addr_section_name (b->name.c_str ())); | |
458 | if (retval != 0) | |
459 | return retval < 0; | |
82ccf5a5 | 460 | |
37e136b1 | 461 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
462 | } |
463 | ||
37e136b1 | 464 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 465 | |
37e136b1 TT |
466 | static std::vector<const struct other_sections *> |
467 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 468 | { |
82ccf5a5 JK |
469 | int i; |
470 | ||
37e136b1 TT |
471 | std::vector<const struct other_sections *> array (addrs.size ()); |
472 | for (i = 0; i < addrs.size (); i++) | |
473 | array[i] = &addrs[i]; | |
82ccf5a5 | 474 | |
37e136b1 | 475 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
476 | |
477 | return array; | |
478 | } | |
479 | ||
75242ef4 | 480 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
481 | also SECTINDEXes specific to ABFD there. This function can be used to |
482 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
483 | |
484 | void | |
37e136b1 | 485 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
486 | { |
487 | asection *lower_sect; | |
75242ef4 JK |
488 | CORE_ADDR lower_offset; |
489 | int i; | |
490 | ||
491 | /* Find lowest loadable section to be used as starting point for | |
85102364 | 492 | contiguous sections. */ |
e76ab67f | 493 | lower_sect = NULL; |
ad7277da TT |
494 | for (asection *iter : gdb_bfd_sections (abfd)) |
495 | find_lowest_section (iter, &lower_sect); | |
75242ef4 JK |
496 | if (lower_sect == NULL) |
497 | { | |
498 | warning (_("no loadable sections found in added symbol-file %s"), | |
499 | bfd_get_filename (abfd)); | |
500 | lower_offset = 0; | |
e8289572 | 501 | } |
75242ef4 | 502 | else |
fd361982 | 503 | lower_offset = bfd_section_vma (lower_sect); |
75242ef4 | 504 | |
82ccf5a5 JK |
505 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
506 | in ABFD. Section names are not unique - there can be multiple sections of | |
507 | the same name. Also the sections of the same name do not have to be | |
508 | adjacent to each other. Some sections may be present only in one of the | |
509 | files. Even sections present in both files do not have to be in the same | |
510 | order. | |
511 | ||
512 | Use stable sort by name for the sections in both files. Then linearly | |
513 | scan both lists matching as most of the entries as possible. */ | |
514 | ||
37e136b1 TT |
515 | std::vector<const struct other_sections *> addrs_sorted |
516 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 517 | |
37e136b1 TT |
518 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
519 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
520 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 521 | |
c378eb4e MS |
522 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
523 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 524 | |
37e136b1 TT |
525 | std::vector<const struct other_sections *> |
526 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 527 | |
37e136b1 TT |
528 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
529 | = abfd_addrs_sorted.begin (); | |
52941706 | 530 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 531 | { |
37e136b1 | 532 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 533 | |
37e136b1 TT |
534 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
535 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 536 | sect_name) < 0) |
37e136b1 | 537 | abfd_sorted_iter++; |
82ccf5a5 | 538 | |
37e136b1 TT |
539 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
540 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 541 | sect_name) == 0) |
82ccf5a5 JK |
542 | { |
543 | int index_in_addrs; | |
544 | ||
545 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 546 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 547 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 548 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
549 | |
550 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 551 | abfd_sorted_iter++; |
82ccf5a5 | 552 | } |
82ccf5a5 JK |
553 | } |
554 | ||
75242ef4 JK |
555 | /* Calculate offsets for the loadable sections. |
556 | FIXME! Sections must be in order of increasing loadable section | |
557 | so that contiguous sections can use the lower-offset!!! | |
558 | ||
559 | Adjust offsets if the segments are not contiguous. | |
560 | If the section is contiguous, its offset should be set to | |
561 | the offset of the highest loadable section lower than it | |
562 | (the loadable section directly below it in memory). | |
563 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
564 | ||
37e136b1 | 565 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 566 | { |
37e136b1 | 567 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
568 | |
569 | if (sect) | |
75242ef4 | 570 | { |
c378eb4e | 571 | /* This is the index used by BFD. */ |
37e136b1 | 572 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 573 | |
37e136b1 | 574 | if ((*addrs)[i].addr != 0) |
75242ef4 | 575 | { |
37e136b1 TT |
576 | (*addrs)[i].addr -= sect->addr; |
577 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
578 | } |
579 | else | |
37e136b1 | 580 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
581 | } |
582 | else | |
672d9c23 | 583 | { |
1276c759 | 584 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 585 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 586 | |
b0fcb67f JK |
587 | /* This section does not exist in ABFD, which is normally |
588 | unexpected and we want to issue a warning. | |
589 | ||
4d9743af JK |
590 | However, the ELF prelinker does create a few sections which are |
591 | marked in the main executable as loadable (they are loaded in | |
592 | memory from the DYNAMIC segment) and yet are not present in | |
593 | separate debug info files. This is fine, and should not cause | |
594 | a warning. Shared libraries contain just the section | |
595 | ".gnu.liblist" but it is not marked as loadable there. There is | |
596 | no other way to identify them than by their name as the sections | |
1276c759 JK |
597 | created by prelink have no special flags. |
598 | ||
599 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 600 | |
37e136b1 TT |
601 | if (!(sect_name == ".gnu.liblist" |
602 | || sect_name == ".gnu.conflict" | |
603 | || (sect_name == ".bss" | |
1276c759 | 604 | && i > 0 |
37e136b1 | 605 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 606 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 607 | || (sect_name == ".sbss" |
1276c759 | 608 | && i > 0 |
37e136b1 | 609 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 610 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 611 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
612 | bfd_get_filename (abfd)); |
613 | ||
37e136b1 TT |
614 | (*addrs)[i].addr = 0; |
615 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 616 | } |
75242ef4 JK |
617 | } |
618 | } | |
619 | ||
620 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
621 | of how to represent it for fast symbol reading. This is the default | |
622 | version of the sym_fns.sym_offsets function for symbol readers that | |
623 | don't need to do anything special. It allocates a section_offsets table | |
624 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
625 | ||
626 | void | |
627 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 628 | const section_addr_info &addrs) |
75242ef4 | 629 | { |
98badbfd | 630 | objfile->section_offsets.resize (gdb_bfd_count_sections (objfile->obfd.get ())); |
6a053cb1 | 631 | relative_addr_info_to_section_offsets (objfile->section_offsets, addrs); |
e8289572 | 632 | |
c1bd25fd DJ |
633 | /* For relocatable files, all loadable sections will start at zero. |
634 | The zero is meaningless, so try to pick arbitrary addresses such | |
635 | that no loadable sections overlap. This algorithm is quadratic, | |
636 | but the number of sections in a single object file is generally | |
637 | small. */ | |
98badbfd | 638 | if ((bfd_get_file_flags (objfile->obfd.get ()) & (EXEC_P | DYNAMIC)) == 0) |
c1bd25fd | 639 | { |
98badbfd | 640 | bfd *abfd = objfile->obfd.get (); |
2711e456 | 641 | asection *cur_sec; |
2711e456 DJ |
642 | |
643 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
644 | /* We do not expect this to happen; just skip this step if the | |
645 | relocatable file has a section with an assigned VMA. */ | |
fd361982 | 646 | if (bfd_section_vma (cur_sec) != 0) |
2711e456 DJ |
647 | break; |
648 | ||
649 | if (cur_sec == NULL) | |
650 | { | |
6a053cb1 | 651 | section_offsets &offsets = objfile->section_offsets; |
2711e456 DJ |
652 | |
653 | /* Pick non-overlapping offsets for sections the user did not | |
654 | place explicitly. */ | |
ad7277da | 655 | CORE_ADDR lowest = 0; |
98badbfd TT |
656 | for (asection *sect : gdb_bfd_sections (objfile->obfd.get ())) |
657 | place_section (objfile->obfd.get (), sect, objfile->section_offsets, | |
ad7277da | 658 | lowest); |
2711e456 DJ |
659 | |
660 | /* Correctly filling in the section offsets is not quite | |
661 | enough. Relocatable files have two properties that | |
662 | (most) shared objects do not: | |
663 | ||
664 | - Their debug information will contain relocations. Some | |
665 | shared libraries do also, but many do not, so this can not | |
666 | be assumed. | |
667 | ||
668 | - If there are multiple code sections they will be loaded | |
669 | at different relative addresses in memory than they are | |
670 | in the objfile, since all sections in the file will start | |
671 | at address zero. | |
672 | ||
673 | Because GDB has very limited ability to map from an | |
674 | address in debug info to the correct code section, | |
675 | it relies on adding SECT_OFF_TEXT to things which might be | |
676 | code. If we clear all the section offsets, and set the | |
677 | section VMAs instead, then symfile_relocate_debug_section | |
678 | will return meaningful debug information pointing at the | |
679 | correct sections. | |
680 | ||
681 | GDB has too many different data structures for section | |
682 | addresses - a bfd, objfile, and so_list all have section | |
683 | tables, as does exec_ops. Some of these could probably | |
684 | be eliminated. */ | |
685 | ||
686 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
687 | cur_sec = cur_sec->next) | |
688 | { | |
fd361982 | 689 | if ((bfd_section_flags (cur_sec) & SEC_ALLOC) == 0) |
2711e456 DJ |
690 | continue; |
691 | ||
fd361982 | 692 | bfd_set_section_vma (cur_sec, offsets[cur_sec->index]); |
3e43a32a MS |
693 | exec_set_section_address (bfd_get_filename (abfd), |
694 | cur_sec->index, | |
30510692 | 695 | offsets[cur_sec->index]); |
2711e456 DJ |
696 | offsets[cur_sec->index] = 0; |
697 | } | |
698 | } | |
c1bd25fd DJ |
699 | } |
700 | ||
e8289572 | 701 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 702 | .rodata sections. */ |
e8289572 JB |
703 | init_objfile_sect_indices (objfile); |
704 | } | |
705 | ||
31d99776 DJ |
706 | /* Divide the file into segments, which are individual relocatable units. |
707 | This is the default version of the sym_fns.sym_segments function for | |
708 | symbol readers that do not have an explicit representation of segments. | |
709 | It assumes that object files do not have segments, and fully linked | |
710 | files have a single segment. */ | |
711 | ||
62982abd | 712 | symfile_segment_data_up |
31d99776 DJ |
713 | default_symfile_segments (bfd *abfd) |
714 | { | |
715 | int num_sections, i; | |
716 | asection *sect; | |
31d99776 DJ |
717 | CORE_ADDR low, high; |
718 | ||
719 | /* Relocatable files contain enough information to position each | |
720 | loadable section independently; they should not be relocated | |
721 | in segments. */ | |
722 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
723 | return NULL; | |
724 | ||
725 | /* Make sure there is at least one loadable section in the file. */ | |
726 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
727 | { | |
fd361982 | 728 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
729 | continue; |
730 | ||
731 | break; | |
732 | } | |
733 | if (sect == NULL) | |
734 | return NULL; | |
735 | ||
fd361982 AM |
736 | low = bfd_section_vma (sect); |
737 | high = low + bfd_section_size (sect); | |
31d99776 | 738 | |
62982abd | 739 | symfile_segment_data_up data (new symfile_segment_data); |
31d99776 DJ |
740 | |
741 | num_sections = bfd_count_sections (abfd); | |
9005fbbb SM |
742 | |
743 | /* All elements are initialized to 0 (map to no segment). */ | |
744 | data->segment_info.resize (num_sections); | |
31d99776 DJ |
745 | |
746 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
747 | { | |
748 | CORE_ADDR vma; | |
749 | ||
fd361982 | 750 | if ((bfd_section_flags (sect) & SEC_ALLOC) == 0) |
31d99776 DJ |
751 | continue; |
752 | ||
fd361982 | 753 | vma = bfd_section_vma (sect); |
31d99776 DJ |
754 | if (vma < low) |
755 | low = vma; | |
fd361982 AM |
756 | if (vma + bfd_section_size (sect) > high) |
757 | high = vma + bfd_section_size (sect); | |
31d99776 DJ |
758 | |
759 | data->segment_info[i] = 1; | |
760 | } | |
761 | ||
68b888ff | 762 | data->segments.emplace_back (low, high - low); |
31d99776 DJ |
763 | |
764 | return data; | |
765 | } | |
766 | ||
608e2dbb TT |
767 | /* This is a convenience function to call sym_read for OBJFILE and |
768 | possibly force the partial symbols to be read. */ | |
769 | ||
770 | static void | |
b15cc25c | 771 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
772 | { |
773 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 774 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
775 | |
776 | /* find_separate_debug_file_in_section should be called only if there is | |
777 | single binary with no existing separate debug info file. */ | |
a8ad4f3c | 778 | if (!objfile->has_partial_symbols () |
8a92335b JK |
779 | && objfile->separate_debug_objfile == NULL |
780 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 781 | { |
192b62ce | 782 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
783 | |
784 | if (abfd != NULL) | |
24ba069a JK |
785 | { |
786 | /* find_separate_debug_file_in_section uses the same filename for the | |
787 | virtual section-as-bfd like the bfd filename containing the | |
788 | section. Therefore use also non-canonical name form for the same | |
789 | file containing the section. */ | |
98badbfd | 790 | symbol_file_add_separate (abfd, bfd_get_filename (abfd.get ()), |
921222e2 | 791 | add_flags | SYMFILE_NOT_FILENAME, objfile); |
24ba069a | 792 | } |
608e2dbb TT |
793 | } |
794 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
d1eef86d | 795 | objfile->require_partial_symbols (false); |
608e2dbb TT |
796 | } |
797 | ||
3d6e24f0 JB |
798 | /* Initialize entry point information for this objfile. */ |
799 | ||
800 | static void | |
801 | init_entry_point_info (struct objfile *objfile) | |
802 | { | |
6ef55de7 TT |
803 | struct entry_info *ei = &objfile->per_bfd->ei; |
804 | ||
805 | if (ei->initialized) | |
806 | return; | |
807 | ei->initialized = 1; | |
808 | ||
3d6e24f0 JB |
809 | /* Save startup file's range of PC addresses to help blockframe.c |
810 | decide where the bottom of the stack is. */ | |
811 | ||
98badbfd | 812 | if (bfd_get_file_flags (objfile->obfd.get ()) & EXEC_P) |
3d6e24f0 JB |
813 | { |
814 | /* Executable file -- record its entry point so we'll recognize | |
dda83cd7 | 815 | the startup file because it contains the entry point. */ |
98badbfd | 816 | ei->entry_point = bfd_get_start_address (objfile->obfd.get ()); |
6ef55de7 | 817 | ei->entry_point_p = 1; |
3d6e24f0 | 818 | } |
98badbfd TT |
819 | else if (bfd_get_file_flags (objfile->obfd.get ()) & DYNAMIC |
820 | && bfd_get_start_address (objfile->obfd.get ()) != 0) | |
3d6e24f0 JB |
821 | { |
822 | /* Some shared libraries may have entry points set and be | |
823 | runnable. There's no clear way to indicate this, so just check | |
824 | for values other than zero. */ | |
98badbfd | 825 | ei->entry_point = bfd_get_start_address (objfile->obfd.get ()); |
6ef55de7 | 826 | ei->entry_point_p = 1; |
3d6e24f0 JB |
827 | } |
828 | else | |
829 | { | |
830 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 831 | ei->entry_point_p = 0; |
3d6e24f0 JB |
832 | } |
833 | ||
6ef55de7 | 834 | if (ei->entry_point_p) |
3d6e24f0 | 835 | { |
53eddfa6 | 836 | struct obj_section *osect; |
6ef55de7 | 837 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 838 | int found; |
3d6e24f0 JB |
839 | |
840 | /* Make certain that the address points at real code, and not a | |
841 | function descriptor. */ | |
328d42d8 SM |
842 | entry_point = gdbarch_convert_from_func_ptr_addr |
843 | (objfile->arch (), entry_point, current_inferior ()->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 |
98badbfd | 860 | = gdb_bfd_section_index (objfile->obfd.get (), sect); |
53eddfa6 TT |
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 | |
98badbfd | 903 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd.get ())); |
e1114590 | 904 | objfile->qf.clear (); |
c906108c | 905 | |
75245b24 | 906 | if (objfile->sf == NULL) |
36e4d068 JB |
907 | { |
908 | /* No symbols to load, but we still need to make sure | |
909 | that the section_offsets table is allocated. */ | |
98badbfd | 910 | int num_sections = gdb_bfd_count_sections (objfile->obfd.get ()); |
36e4d068 | 911 | |
6a053cb1 | 912 | objfile->section_offsets.assign (num_sections, 0); |
36e4d068 JB |
913 | return; |
914 | } | |
75245b24 | 915 | |
c906108c SS |
916 | /* Make sure that partially constructed symbol tables will be cleaned up |
917 | if an error occurs during symbol reading. */ | |
286526c1 TT |
918 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
919 | ||
268e4f09 | 920 | objfile_up objfile_holder (objfile); |
c906108c | 921 | |
6bf667bb DE |
922 | /* If ADDRS is NULL, put together a dummy address list. |
923 | We now establish the convention that an addr of zero means | |
c378eb4e | 924 | no load address was specified. */ |
6bf667bb | 925 | if (! addrs) |
37e136b1 | 926 | addrs = &local_addr; |
a39a16c4 | 927 | |
c5aa993b | 928 | if (mainline) |
c906108c SS |
929 | { |
930 | /* We will modify the main symbol table, make sure that all its users | |
dda83cd7 | 931 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 932 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
933 | |
934 | /* Since no error yet, throw away the old symbol table. */ | |
935 | ||
a42d7dd8 | 936 | if (current_program_space->symfile_object_file != NULL) |
c906108c | 937 | { |
a42d7dd8 TT |
938 | current_program_space->symfile_object_file->unlink (); |
939 | gdb_assert (current_program_space->symfile_object_file == NULL); | |
c906108c SS |
940 | } |
941 | ||
942 | /* Currently we keep symbols from the add-symbol-file command. | |
dda83cd7 SM |
943 | If the user wants to get rid of them, they should do "symbol-file" |
944 | without arguments first. Not sure this is the best behavior | |
945 | (PR 2207). */ | |
c906108c | 946 | |
c5aa993b | 947 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
948 | } |
949 | ||
950 | /* Convert addr into an offset rather than an absolute address. | |
951 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 952 | and assume that <addr> is where that got loaded. |
c906108c | 953 | |
53a5351d JM |
954 | We no longer warn if the lowest section is not a text segment (as |
955 | happens for the PA64 port. */ | |
37e136b1 | 956 | if (addrs->size () > 0) |
98badbfd | 957 | addr_info_make_relative (addrs, objfile->obfd.get ()); |
c906108c SS |
958 | |
959 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
960 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 961 | initial symbol reading for this file. */ |
c906108c | 962 | |
c5aa993b | 963 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 964 | clear_complaints (); |
c906108c | 965 | |
37e136b1 | 966 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 967 | |
608e2dbb | 968 | read_symbols (objfile, add_flags); |
b11896a5 | 969 | |
c906108c SS |
970 | /* Discard cleanups as symbol reading was successful. */ |
971 | ||
ed2b3126 | 972 | objfile_holder.release (); |
286526c1 TT |
973 | if (defer_clear_users) |
974 | defer_clear_users->release (); | |
c906108c SS |
975 | } |
976 | ||
36e4d068 JB |
977 | /* Same as syms_from_objfile_1, but also initializes the objfile |
978 | entry-point info. */ | |
979 | ||
6bf667bb | 980 | static void |
36e4d068 | 981 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 982 | section_addr_info *addrs, |
b15cc25c | 983 | symfile_add_flags add_flags) |
36e4d068 | 984 | { |
6bf667bb | 985 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
986 | init_entry_point_info (objfile); |
987 | } | |
988 | ||
c906108c SS |
989 | /* Perform required actions after either reading in the initial |
990 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 991 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 992 | |
e7d52ed3 | 993 | static void |
b15cc25c | 994 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 995 | { |
c906108c | 996 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 997 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 998 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 999 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1000 | { |
1001 | /* OK, make it the "real" symbol file. */ | |
a42d7dd8 | 1002 | current_program_space->symfile_object_file = objfile; |
c906108c | 1003 | |
c1e56572 | 1004 | clear_symtab_users (add_flags); |
c906108c | 1005 | } |
7eedccfa | 1006 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1007 | { |
69de3c6a | 1008 | breakpoint_re_set (); |
c906108c SS |
1009 | } |
1010 | ||
1011 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1012 | clear_complaints (); |
c906108c SS |
1013 | } |
1014 | ||
1015 | /* Process a symbol file, as either the main file or as a dynamically | |
1016 | loaded file. | |
1017 | ||
5417f6dc | 1018 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1019 | A new reference is acquired by this function. |
7904e09f | 1020 | |
9e86da07 | 1021 | For NAME description see the objfile constructor. |
24ba069a | 1022 | |
7eedccfa | 1023 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
30baf67b | 1024 | extra, such as dynamically loaded code, and what to do with breakpoints. |
7904e09f | 1025 | |
6bf667bb | 1026 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1027 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1028 | |
63524580 JK |
1029 | PARENT is the original objfile if ABFD is a separate debug info file. |
1030 | Otherwise PARENT is NULL. | |
1031 | ||
c906108c | 1032 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1033 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1034 | |
7904e09f | 1035 | static struct objfile * |
98badbfd | 1036 | symbol_file_add_with_addrs (const gdb_bfd_ref_ptr &abfd, const char *name, |
b15cc25c | 1037 | symfile_add_flags add_flags, |
37e136b1 | 1038 | section_addr_info *addrs, |
b15cc25c | 1039 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1040 | { |
1041 | struct objfile *objfile; | |
7eedccfa | 1042 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1043 | const int mainline = add_flags & SYMFILE_MAINLINE; |
a8654e7d | 1044 | const int always_confirm = add_flags & SYMFILE_ALWAYS_CONFIRM; |
770e7fc7 | 1045 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1046 | && (readnow_symbol_files |
1047 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1048 | |
9291a0cd | 1049 | if (readnow_symbol_files) |
b11896a5 TT |
1050 | { |
1051 | flags |= OBJF_READNOW; | |
1052 | add_flags &= ~SYMFILE_NO_READ; | |
1053 | } | |
97cbe998 SDJ |
1054 | else if (readnever_symbol_files |
1055 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1056 | { | |
1057 | flags |= OBJF_READNEVER; | |
1058 | add_flags |= SYMFILE_NO_READ; | |
1059 | } | |
921222e2 TT |
1060 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1061 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1062 | |
a8654e7d | 1063 | /* Give user a chance to burp if ALWAYS_CONFIRM or we'd be |
5417f6dc | 1064 | interactively wiping out any existing symbols. */ |
c906108c | 1065 | |
a8654e7d PW |
1066 | if (from_tty |
1067 | && (always_confirm | |
1068 | || ((have_full_symbols () || have_partial_symbols ()) | |
1069 | && mainline)) | |
9e2f0ad4 | 1070 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1071 | error (_("Not confirmed.")); |
c906108c | 1072 | |
b15cc25c PA |
1073 | if (mainline) |
1074 | flags |= OBJF_MAINLINE; | |
f65fe570 | 1075 | objfile = objfile::make (abfd, name, flags, parent); |
63524580 | 1076 | |
78a4a9b9 AC |
1077 | /* We either created a new mapped symbol table, mapped an existing |
1078 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1079 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1080 | if (should_print) |
c906108c | 1081 | { |
769d7dc4 AC |
1082 | if (deprecated_pre_add_symbol_hook) |
1083 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1084 | else |
6cb06a8c TT |
1085 | gdb_printf (_("Reading symbols from %ps...\n"), |
1086 | styled_string (file_name_style.style (), name)); | |
c906108c | 1087 | } |
6bf667bb | 1088 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1089 | |
1090 | /* We now have at least a partial symbol table. Check to see if the | |
1091 | user requested that all symbols be read on initial access via either | |
1092 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1093 | all partial symbol tables for this objfile if so. */ |
c906108c | 1094 | |
9291a0cd | 1095 | if ((flags & OBJF_READNOW)) |
c906108c | 1096 | { |
b11896a5 | 1097 | if (should_print) |
6cb06a8c TT |
1098 | gdb_printf (_("Expanding full symbols from %ps...\n"), |
1099 | styled_string (file_name_style.style (), name)); | |
c906108c | 1100 | |
4d080b46 | 1101 | objfile->expand_all_symtabs (); |
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) | |
6cb06a8c TT |
1110 | gdb_printf (_("(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 | |
98badbfd | 1142 | symbol_file_add_separate (const gdb_bfd_ref_ptr &bfd, const char *name, |
b15cc25c | 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 * |
98badbfd | 1163 | symbol_file_add_from_bfd (const gdb_bfd_ref_ptr &abfd, const char *name, |
b15cc25c | 1164 | symfile_add_flags add_flags, |
37e136b1 | 1165 | section_addr_info *addrs, |
dda83cd7 | 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 | |
98badbfd | 1181 | return symbol_file_add_from_bfd (bfd, name, add_flags, addrs, |
192b62ce | 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 | |
a42d7dd8 | 1222 | && (current_program_space->symfile_object_file |
0430b0d6 | 1223 | ? !query (_("Discard symbol table from `%s'? "), |
a42d7dd8 | 1224 | objfile_name (current_program_space->symfile_object_file)) |
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 | ||
a42d7dd8 | 1236 | gdb_assert (current_program_space->symfile_object_file == NULL); |
d10c338d | 1237 | if (from_tty) |
6cb06a8c | 1238 | gdb_printf (_("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 | 1264 | { |
6cb06a8c | 1265 | gdb_printf (gdb_stdlog, _(" Trying %s..."), name.c_str ()); |
0bc1fe38 | 1266 | gdb_flush (gdb_stdlog); |
50794b45 | 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) | |
6cb06a8c | 1274 | gdb_printf (gdb_stdlog, _(" no, unable to open.\n")); |
50794b45 SM |
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 | 1291 | && abfd_stat.st_ino != 0 |
98badbfd | 1292 | && bfd_stat (parent_objfile->obfd.get (), &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) | |
6cb06a8c TT |
1298 | gdb_printf (gdb_stdlog, |
1299 | _(" no, same file as the objfile.\n")); | |
50794b45 SM |
1300 | |
1301 | return 0; | |
1302 | } | |
904578ed | 1303 | verified_as_different = 1; |
32a0e547 | 1304 | } |
904578ed JK |
1305 | else |
1306 | verified_as_different = 0; | |
32a0e547 | 1307 | |
192b62ce | 1308 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1309 | |
904578ed | 1310 | if (!file_crc_p) |
50794b45 SM |
1311 | { |
1312 | if (separate_debug_file_debug) | |
6cb06a8c | 1313 | gdb_printf (gdb_stdlog, _(" no, error computing CRC.\n")); |
50794b45 SM |
1314 | |
1315 | return 0; | |
1316 | } | |
904578ed | 1317 | |
287ccc17 JK |
1318 | if (crc != file_crc) |
1319 | { | |
dccee2de TT |
1320 | unsigned long parent_crc; |
1321 | ||
0a93529c GB |
1322 | /* If the files could not be verified as different with |
1323 | bfd_stat then we need to calculate the parent's CRC | |
1324 | to verify whether the files are different or not. */ | |
904578ed | 1325 | |
dccee2de | 1326 | if (!verified_as_different) |
904578ed | 1327 | { |
98badbfd | 1328 | if (!gdb_bfd_crc (parent_objfile->obfd.get (), &parent_crc)) |
50794b45 SM |
1329 | { |
1330 | if (separate_debug_file_debug) | |
6cb06a8c TT |
1331 | gdb_printf (gdb_stdlog, |
1332 | _(" no, error computing CRC.\n")); | |
50794b45 SM |
1333 | |
1334 | return 0; | |
1335 | } | |
904578ed JK |
1336 | } |
1337 | ||
dccee2de | 1338 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1339 | warning (_("the debug information found in \"%s\"" |
1340 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1341 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1342 | |
50794b45 | 1343 | if (separate_debug_file_debug) |
6cb06a8c | 1344 | gdb_printf (gdb_stdlog, _(" no, CRC doesn't match.\n")); |
50794b45 | 1345 | |
287ccc17 JK |
1346 | return 0; |
1347 | } | |
1348 | ||
50794b45 | 1349 | if (separate_debug_file_debug) |
6cb06a8c | 1350 | gdb_printf (gdb_stdlog, _(" yes!\n")); |
50794b45 | 1351 | |
287ccc17 | 1352 | return 1; |
5b5d99cf JB |
1353 | } |
1354 | ||
e0700ba4 | 1355 | std::string debug_file_directory; |
920d2a44 AC |
1356 | static void |
1357 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1358 | struct cmd_list_element *c, const char *value) | |
1359 | { | |
6cb06a8c TT |
1360 | gdb_printf (file, |
1361 | _("The directory where separate debug " | |
1362 | "symbols are searched for is \"%s\".\n"), | |
1363 | value); | |
920d2a44 | 1364 | } |
5b5d99cf JB |
1365 | |
1366 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1367 | #define DEBUG_SUBDIRECTORY ".debug" | |
1368 | #endif | |
1369 | ||
1db33378 PP |
1370 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1371 | where the original file resides (may not be the same as | |
1372 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1373 | looking for. CANON_DIR is the "realpath" form of DIR. |
1374 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1375 | Returns the path of the file with separate debug info, or an empty |
1376 | string. */ | |
1db33378 | 1377 | |
a8dbfd58 | 1378 | static std::string |
1db33378 PP |
1379 | find_separate_debug_file (const char *dir, |
1380 | const char *canon_dir, | |
1381 | const char *debuglink, | |
1382 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1383 | { |
c4dcb155 | 1384 | if (separate_debug_file_debug) |
6cb06a8c TT |
1385 | gdb_printf (gdb_stdlog, |
1386 | _("\nLooking for separate debug info (debug link) for " | |
1387 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1388 | |
5b5d99cf | 1389 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1390 | std::string debugfile = dir; |
1391 | debugfile += debuglink; | |
5b5d99cf | 1392 | |
32a0e547 | 1393 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1394 | return debugfile; |
5417f6dc | 1395 | |
5b5d99cf | 1396 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1397 | debugfile = dir; |
1398 | debugfile += DEBUG_SUBDIRECTORY; | |
1399 | debugfile += "/"; | |
1400 | debugfile += debuglink; | |
5b5d99cf | 1401 | |
32a0e547 | 1402 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1403 | return debugfile; |
5417f6dc | 1404 | |
24ddea62 | 1405 | /* Then try in the global debugfile directories. |
f888f159 | 1406 | |
24ddea62 JK |
1407 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1408 | cause "/..." lookups. */ | |
5417f6dc | 1409 | |
5d36dfb9 AU |
1410 | bool target_prefix = startswith (dir, "target:"); |
1411 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 | 1412 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
e0700ba4 SM |
1413 | = dirnames_to_char_ptr_vec (debug_file_directory.c_str ()); |
1414 | gdb::unique_xmalloc_ptr<char> canon_sysroot | |
1415 | = gdb_realpath (gdb_sysroot.c_str ()); | |
24ddea62 | 1416 | |
5f2459c2 EZ |
1417 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1418 | convert the drive letter into a one-letter directory, so that the | |
1419 | file name resulting from splicing below will be valid. | |
1420 | ||
1421 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1422 | There are various remote-debugging scenarios where such a | |
1423 | transformation of the drive letter might be required when GDB runs | |
1424 | on a Posix host, see | |
1425 | ||
1426 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1427 | ||
85102364 | 1428 | If some of those scenarios need to be supported, we will need to |
5f2459c2 EZ |
1429 | use a different condition for HAS_DRIVE_SPEC and a different macro |
1430 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1431 | std::string drive; | |
1432 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1433 | { | |
1434 | drive = dir_notarget[0]; | |
1435 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1436 | } | |
1437 | ||
e80aaf61 | 1438 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1439 | { |
5d36dfb9 | 1440 | debugfile = target_prefix ? "target:" : ""; |
820ed8af | 1441 | debugfile += debugdir; |
a8dbfd58 | 1442 | debugfile += "/"; |
5f2459c2 | 1443 | debugfile += drive; |
5d36dfb9 | 1444 | debugfile += dir_notarget; |
a8dbfd58 | 1445 | debugfile += debuglink; |
aa28a74e | 1446 | |
32a0e547 | 1447 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1448 | return debugfile; |
24ddea62 | 1449 | |
f62318e9 JB |
1450 | const char *base_path = NULL; |
1451 | if (canon_dir != NULL) | |
1452 | { | |
1453 | if (canon_sysroot.get () != NULL) | |
1454 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1455 | else | |
e0700ba4 | 1456 | base_path = child_path (gdb_sysroot.c_str (), canon_dir); |
f62318e9 JB |
1457 | } |
1458 | if (base_path != NULL) | |
24ddea62 | 1459 | { |
402d2bfe JB |
1460 | /* If the file is in the sysroot, try using its base path in |
1461 | the global debugfile directory. */ | |
5d36dfb9 | 1462 | debugfile = target_prefix ? "target:" : ""; |
820ed8af | 1463 | debugfile += debugdir; |
cd4b7848 JB |
1464 | debugfile += "/"; |
1465 | debugfile += base_path; | |
a8dbfd58 SM |
1466 | debugfile += "/"; |
1467 | debugfile += debuglink; | |
24ddea62 | 1468 | |
402d2bfe JB |
1469 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1470 | return debugfile; | |
1471 | ||
1472 | /* If the file is in the sysroot, try using its base path in | |
1473 | the sysroot's global debugfile directory. */ | |
1474 | debugfile = target_prefix ? "target:" : ""; | |
1475 | debugfile += gdb_sysroot; | |
820ed8af | 1476 | debugfile += debugdir; |
cd4b7848 JB |
1477 | debugfile += "/"; |
1478 | debugfile += base_path; | |
402d2bfe JB |
1479 | debugfile += "/"; |
1480 | debugfile += debuglink; | |
1481 | ||
32a0e547 | 1482 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1483 | return debugfile; |
24ddea62 | 1484 | } |
402d2bfe | 1485 | |
aa28a74e | 1486 | } |
f888f159 | 1487 | |
a8dbfd58 | 1488 | return std::string (); |
1db33378 PP |
1489 | } |
1490 | ||
7edbb660 | 1491 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1492 | If there were no directory separators in PATH, PATH will be empty |
1493 | string on return. */ | |
1494 | ||
1495 | static void | |
1496 | terminate_after_last_dir_separator (char *path) | |
1497 | { | |
1498 | int i; | |
1499 | ||
1500 | /* Strip off the final filename part, leaving the directory name, | |
1501 | followed by a slash. The directory can be relative or absolute. */ | |
1502 | for (i = strlen(path) - 1; i >= 0; i--) | |
1503 | if (IS_DIR_SEPARATOR (path[i])) | |
1504 | break; | |
1505 | ||
1506 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1507 | path[i + 1] = '\0'; | |
1508 | } | |
1509 | ||
1510 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1511 | Returns pathname, or an empty string. */ |
1db33378 | 1512 | |
a8dbfd58 | 1513 | std::string |
1db33378 PP |
1514 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1515 | { | |
1db33378 | 1516 | unsigned long crc32; |
1db33378 | 1517 | |
5eae7aea | 1518 | gdb::unique_xmalloc_ptr<char> debuglink |
98badbfd | 1519 | (bfd_get_debug_link_info (objfile->obfd.get (), &crc32)); |
1db33378 PP |
1520 | |
1521 | if (debuglink == NULL) | |
1522 | { | |
1523 | /* There's no separate debug info, hence there's no way we could | |
1524 | load it => no warning. */ | |
a8dbfd58 | 1525 | return std::string (); |
1db33378 PP |
1526 | } |
1527 | ||
5eae7aea TT |
1528 | std::string dir = objfile_name (objfile); |
1529 | terminate_after_last_dir_separator (&dir[0]); | |
1530 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1531 | |
a8dbfd58 SM |
1532 | std::string debugfile |
1533 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1534 | debuglink.get (), crc32, objfile); | |
1db33378 | 1535 | |
a8dbfd58 | 1536 | if (debugfile.empty ()) |
1db33378 | 1537 | { |
1db33378 PP |
1538 | /* For PR gdb/9538, try again with realpath (if different from the |
1539 | original). */ | |
1540 | ||
1541 | struct stat st_buf; | |
1542 | ||
4262abfb JK |
1543 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1544 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1545 | { |
5eae7aea TT |
1546 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1547 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1548 | if (symlink_dir != NULL) |
1549 | { | |
5eae7aea TT |
1550 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1551 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1552 | { |
1553 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1554 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1555 | symlink_dir.get (), | |
1556 | debuglink.get (), | |
1db33378 PP |
1557 | crc32, |
1558 | objfile); | |
1559 | } | |
1560 | } | |
1561 | } | |
1db33378 | 1562 | } |
aa28a74e | 1563 | |
25522fae | 1564 | return debugfile; |
5b5d99cf JB |
1565 | } |
1566 | ||
97cbe998 SDJ |
1567 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1568 | simultaneously. */ | |
1569 | ||
1570 | static void | |
1571 | validate_readnow_readnever (objfile_flags flags) | |
1572 | { | |
1573 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1574 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1575 | } | |
1576 | ||
c906108c SS |
1577 | /* This is the symbol-file command. Read the file, analyze its |
1578 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1579 | the command is rather bizarre: |
1580 | ||
1581 | 1. The function buildargv implements various quoting conventions | |
1582 | which are undocumented and have little or nothing in common with | |
1583 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1584 | ||
1585 | 2. Options are used, which are not generally used in GDB (perhaps | |
1586 | "set mapped on", "set readnow on" would be better) | |
1587 | ||
1588 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1589 | conventions (because it is confusing and inconvenient). */ |
1590 | ||
1591 | void | |
1d8b34a7 | 1592 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1593 | { |
c906108c SS |
1594 | dont_repeat (); |
1595 | ||
1596 | if (args == NULL) | |
1597 | { | |
1adeb98a | 1598 | symbol_file_clear (from_tty); |
c906108c SS |
1599 | } |
1600 | else | |
1601 | { | |
b15cc25c | 1602 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1603 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1604 | char *name = NULL; |
40fc416f | 1605 | bool stop_processing_options = false; |
d4d429d5 | 1606 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1607 | int idx; |
1608 | char *arg; | |
cb2f3a29 | 1609 | |
ecf45d2c SL |
1610 | if (from_tty) |
1611 | add_flags |= SYMFILE_VERBOSE; | |
1612 | ||
773a1edc | 1613 | gdb_argv built_argv (args); |
40fc416f | 1614 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1615 | { |
40fc416f | 1616 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1617 | { |
40fc416f SDJ |
1618 | if (name == NULL) |
1619 | name = arg; | |
1620 | else | |
1621 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1622 | } |
40fc416f SDJ |
1623 | else if (strcmp (arg, "-readnow") == 0) |
1624 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1625 | else if (strcmp (arg, "-readnever") == 0) |
1626 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1627 | else if (strcmp (arg, "-o") == 0) |
1628 | { | |
1629 | arg = built_argv[++idx]; | |
1630 | if (arg == NULL) | |
1631 | error (_("Missing argument to -o")); | |
1632 | ||
1633 | offset = parse_and_eval_address (arg); | |
1634 | } | |
40fc416f SDJ |
1635 | else if (strcmp (arg, "--") == 0) |
1636 | stop_processing_options = true; | |
1637 | else | |
1638 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1639 | } |
1640 | ||
1641 | if (name == NULL) | |
cb2f3a29 | 1642 | error (_("no symbol file name was specified")); |
40fc416f | 1643 | |
97cbe998 SDJ |
1644 | validate_readnow_readnever (flags); |
1645 | ||
ea142fbf AH |
1646 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1647 | (Position Independent Executable) main symbol file will only be | |
1648 | computed by the solib_create_inferior_hook below. Without it, | |
1649 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1650 | displacement. */ | |
1651 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1652 | ||
d4d429d5 | 1653 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1654 | |
1655 | solib_create_inferior_hook (from_tty); | |
1656 | ||
1657 | /* Now it's safe to re-add the breakpoints. */ | |
1658 | breakpoint_re_set (); | |
ccb5e559 TV |
1659 | |
1660 | /* Also, it's safe to re-add varobjs. */ | |
1661 | varobj_re_set (); | |
c906108c SS |
1662 | } |
1663 | } | |
1664 | ||
d3214198 | 1665 | /* Set the initial language. */ |
c906108c | 1666 | |
8b60591b | 1667 | void |
fba45db2 | 1668 | set_initial_language (void) |
c906108c | 1669 | { |
0dce4280 TV |
1670 | if (language_mode == language_mode_manual) |
1671 | return; | |
9e6c82ad | 1672 | enum language lang = main_language (); |
658dadf0 TV |
1673 | /* Make C the default language. */ |
1674 | enum language default_lang = language_c; | |
c906108c | 1675 | |
9e6c82ad | 1676 | if (lang == language_unknown) |
01f8c46d | 1677 | { |
cd215b2e | 1678 | const char *name = main_name (); |
658dadf0 TV |
1679 | struct symbol *sym |
1680 | = lookup_symbol_in_language (name, NULL, VAR_DOMAIN, default_lang, | |
1681 | NULL).symbol; | |
f888f159 | 1682 | |
bf6d8a91 | 1683 | if (sym != NULL) |
c1b5c1eb | 1684 | lang = sym->language (); |
01f8c46d | 1685 | } |
cb2f3a29 | 1686 | |
ccefe4c4 TT |
1687 | if (lang == language_unknown) |
1688 | { | |
658dadf0 | 1689 | lang = default_lang; |
c906108c | 1690 | } |
ccefe4c4 TT |
1691 | |
1692 | set_language (lang); | |
1693 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1694 | } |
1695 | ||
cb2f3a29 MK |
1696 | /* Open the file specified by NAME and hand it off to BFD for |
1697 | preliminary analysis. Return a newly initialized bfd *, which | |
1698 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1699 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1700 | |
192b62ce | 1701 | gdb_bfd_ref_ptr |
97a41605 | 1702 | symfile_bfd_open (const char *name) |
c906108c | 1703 | { |
97a41605 | 1704 | int desc = -1; |
c906108c | 1705 | |
e0cc99a6 | 1706 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1707 | if (!is_target_filename (name)) |
f1838a98 | 1708 | { |
ee0c3293 | 1709 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1710 | |
97a41605 GB |
1711 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1712 | desc = openp (getenv ("PATH"), | |
1713 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1714 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1715 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1716 | if (desc < 0) |
1717 | { | |
ee0c3293 | 1718 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1719 | |
ee0c3293 | 1720 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1721 | desc = openp (getenv ("PATH"), |
1722 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1723 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1724 | } | |
c906108c | 1725 | #endif |
97a41605 | 1726 | if (desc < 0) |
ee0c3293 | 1727 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1728 | |
e0cc99a6 | 1729 | name = absolute_name.get (); |
97a41605 | 1730 | } |
c906108c | 1731 | |
192b62ce TT |
1732 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1733 | if (sym_bfd == NULL) | |
faab9922 JK |
1734 | error (_("`%s': can't open to read symbols: %s."), name, |
1735 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1736 | |
192b62ce TT |
1737 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1738 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1739 | |
192b62ce TT |
1740 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1741 | error (_("`%s': can't read symbols: %s."), name, | |
1742 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1743 | |
1744 | return sym_bfd; | |
c906108c SS |
1745 | } |
1746 | ||
cb2f3a29 MK |
1747 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1748 | the section was not found. */ | |
1749 | ||
0e931cf0 | 1750 | int |
a121b7c1 | 1751 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 | 1752 | { |
98badbfd | 1753 | asection *sect = bfd_get_section_by_name (objfile->obfd.get (), section_name); |
cb2f3a29 | 1754 | |
0e931cf0 JB |
1755 | if (sect) |
1756 | return sect->index; | |
1757 | else | |
1758 | return -1; | |
1759 | } | |
1760 | ||
c256e171 DE |
1761 | /* Link SF into the global symtab_fns list. |
1762 | FLAVOUR is the file format that SF handles. | |
1763 | Called on startup by the _initialize routine in each object file format | |
1764 | reader, to register information about each format the reader is prepared | |
1765 | to handle. */ | |
c906108c SS |
1766 | |
1767 | void | |
c256e171 | 1768 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1769 | { |
905014d7 | 1770 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1771 | } |
1772 | ||
cb2f3a29 MK |
1773 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1774 | either returns or calls error(). The result is an initialized | |
1775 | struct sym_fns in the objfile structure, that contains cached | |
1776 | information about the symbol file. */ | |
c906108c | 1777 | |
00b5771c | 1778 | static const struct sym_fns * |
31d99776 | 1779 | find_sym_fns (bfd *abfd) |
c906108c | 1780 | { |
31d99776 | 1781 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1782 | |
75245b24 MS |
1783 | if (our_flavour == bfd_target_srec_flavour |
1784 | || our_flavour == bfd_target_ihex_flavour | |
1785 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1786 | return NULL; /* No symbols. */ |
75245b24 | 1787 | |
905014d7 SM |
1788 | for (const registered_sym_fns &rsf : symtab_fns) |
1789 | if (our_flavour == rsf.sym_flavour) | |
1790 | return rsf.sym_fns; | |
cb2f3a29 | 1791 | |
8a3fe4f8 | 1792 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1793 | bfd_get_target (abfd)); |
c906108c SS |
1794 | } |
1795 | \f | |
cb2f3a29 | 1796 | |
c906108c SS |
1797 | /* This function runs the load command of our current target. */ |
1798 | ||
1799 | static void | |
5fed81ff | 1800 | load_command (const char *arg, int from_tty) |
c906108c | 1801 | { |
e5cc9f32 JB |
1802 | dont_repeat (); |
1803 | ||
4487aabf PA |
1804 | /* The user might be reloading because the binary has changed. Take |
1805 | this opportunity to check. */ | |
1806 | reopen_exec_file (); | |
9dec38d3 | 1807 | reread_symbols (from_tty); |
4487aabf | 1808 | |
b577b6af | 1809 | std::string temp; |
c906108c | 1810 | if (arg == NULL) |
1986bccd | 1811 | { |
b577b6af | 1812 | const char *parg, *prev; |
1986bccd | 1813 | |
b577b6af | 1814 | arg = get_exec_file (1); |
1986bccd | 1815 | |
b577b6af TT |
1816 | /* We may need to quote this string so buildargv can pull it |
1817 | apart. */ | |
1818 | prev = parg = arg; | |
1986bccd AS |
1819 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1820 | { | |
b577b6af TT |
1821 | temp.append (prev, parg - prev); |
1822 | prev = parg++; | |
1823 | temp.push_back ('\\'); | |
1986bccd | 1824 | } |
b577b6af TT |
1825 | /* If we have not copied anything yet, then we didn't see a |
1826 | character to quote, and we can just leave ARG unchanged. */ | |
1827 | if (!temp.empty ()) | |
1986bccd | 1828 | { |
b577b6af TT |
1829 | temp.append (prev); |
1830 | arg = temp.c_str (); | |
1986bccd AS |
1831 | } |
1832 | } | |
1833 | ||
c906108c | 1834 | target_load (arg, from_tty); |
2889e661 JB |
1835 | |
1836 | /* After re-loading the executable, we don't really know which | |
1837 | overlays are mapped any more. */ | |
1838 | overlay_cache_invalid = 1; | |
c906108c SS |
1839 | } |
1840 | ||
1841 | /* This version of "load" should be usable for any target. Currently | |
1842 | it is just used for remote targets, not inftarg.c or core files, | |
1843 | on the theory that only in that case is it useful. | |
1844 | ||
1845 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1846 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1847 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1848 | performance compares. */ | |
917317f4 | 1849 | |
917317f4 JM |
1850 | static int validate_download = 0; |
1851 | ||
a76d924d | 1852 | /* Opaque data for load_progress. */ |
55089490 TT |
1853 | struct load_progress_data |
1854 | { | |
a76d924d | 1855 | /* Cumulative data. */ |
55089490 TT |
1856 | unsigned long write_count = 0; |
1857 | unsigned long data_count = 0; | |
1858 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1859 | }; |
1860 | ||
1861 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1862 | struct load_progress_section_data |
1863 | { | |
1864 | load_progress_section_data (load_progress_data *cumulative_, | |
1865 | const char *section_name_, ULONGEST section_size_, | |
1866 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1867 | : cumulative (cumulative_), section_name (section_name_), | |
1868 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1869 | {} | |
1870 | ||
a76d924d | 1871 | struct load_progress_data *cumulative; |
cf7a04e8 | 1872 | |
a76d924d | 1873 | /* Per-section data. */ |
cf7a04e8 | 1874 | const char *section_name; |
55089490 | 1875 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1876 | ULONGEST section_size; |
1877 | CORE_ADDR lma; | |
1878 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1879 | }; |
1880 | ||
55089490 TT |
1881 | /* Opaque data for load_section_callback. */ |
1882 | struct load_section_data | |
1883 | { | |
1884 | load_section_data (load_progress_data *progress_data_) | |
1885 | : progress_data (progress_data_) | |
1886 | {} | |
1887 | ||
1888 | ~load_section_data () | |
1889 | { | |
1890 | for (auto &&request : requests) | |
1891 | { | |
1892 | xfree (request.data); | |
1893 | delete ((load_progress_section_data *) request.baton); | |
1894 | } | |
1895 | } | |
1896 | ||
1897 | CORE_ADDR load_offset = 0; | |
1898 | struct load_progress_data *progress_data; | |
1899 | std::vector<struct memory_write_request> requests; | |
1900 | }; | |
1901 | ||
a76d924d | 1902 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1903 | |
1904 | static void | |
1905 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1906 | { | |
19ba03f4 SM |
1907 | struct load_progress_section_data *args |
1908 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1909 | struct load_progress_data *totals; |
1910 | ||
1911 | if (args == NULL) | |
1912 | /* Writing padding data. No easy way to get at the cumulative | |
1913 | stats, so just ignore this. */ | |
1914 | return; | |
1915 | ||
1916 | totals = args->cumulative; | |
1917 | ||
1918 | if (bytes == 0 && args->section_sent == 0) | |
1919 | { | |
1920 | /* The write is just starting. Let the user know we've started | |
1921 | this section. */ | |
112e8700 SM |
1922 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1923 | args->section_name, | |
1924 | hex_string (args->section_size), | |
1925 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1926 | return; |
1927 | } | |
cf7a04e8 DJ |
1928 | |
1929 | if (validate_download) | |
1930 | { | |
1931 | /* Broken memories and broken monitors manifest themselves here | |
1932 | when bring new computers to life. This doubles already slow | |
1933 | downloads. */ | |
1934 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1935 | might add a verify_memory() method to the target vector and | |
1936 | then use that. remote.c could implement that method using | |
1937 | the ``qCRC'' packet. */ | |
0efef640 | 1938 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1939 | |
0efef640 | 1940 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1941 | error (_("Download verify read failed at %s"), |
f5656ead | 1942 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1943 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1944 | error (_("Download verify compare failed at %s"), |
f5656ead | 1945 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1946 | } |
a76d924d | 1947 | totals->data_count += bytes; |
cf7a04e8 DJ |
1948 | args->lma += bytes; |
1949 | args->buffer += bytes; | |
a76d924d | 1950 | totals->write_count += 1; |
cf7a04e8 | 1951 | args->section_sent += bytes; |
522002f9 | 1952 | if (check_quit_flag () |
cf7a04e8 DJ |
1953 | || (deprecated_ui_load_progress_hook != NULL |
1954 | && deprecated_ui_load_progress_hook (args->section_name, | |
1955 | args->section_sent))) | |
1956 | error (_("Canceled the download")); | |
1957 | ||
1958 | if (deprecated_show_load_progress != NULL) | |
1959 | deprecated_show_load_progress (args->section_name, | |
1960 | args->section_sent, | |
1961 | args->section_size, | |
a76d924d DJ |
1962 | totals->data_count, |
1963 | totals->total_size); | |
cf7a04e8 DJ |
1964 | } |
1965 | ||
5486c517 | 1966 | /* Service function for generic_load. */ |
e4f9b4d5 MS |
1967 | |
1968 | static void | |
5486c517 TT |
1969 | load_one_section (bfd *abfd, asection *asec, |
1970 | struct load_section_data *args) | |
e4f9b4d5 | 1971 | { |
fd361982 AM |
1972 | bfd_size_type size = bfd_section_size (asec); |
1973 | const char *sect_name = bfd_section_name (asec); | |
e4f9b4d5 | 1974 | |
fd361982 | 1975 | if ((bfd_section_flags (asec) & SEC_LOAD) == 0) |
cf7a04e8 | 1976 | return; |
e4f9b4d5 | 1977 | |
cf7a04e8 DJ |
1978 | if (size == 0) |
1979 | return; | |
e4f9b4d5 | 1980 | |
fd361982 | 1981 | ULONGEST begin = bfd_section_lma (asec) + args->load_offset; |
55089490 TT |
1982 | ULONGEST end = begin + size; |
1983 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1984 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1985 | |
55089490 TT |
1986 | load_progress_section_data *section_data |
1987 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1988 | begin, buffer); | |
cf7a04e8 | 1989 | |
55089490 | 1990 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1991 | } |
1992 | ||
dcb07cfa PA |
1993 | static void print_transfer_performance (struct ui_file *stream, |
1994 | unsigned long data_count, | |
1995 | unsigned long write_count, | |
dda83cd7 | 1996 | std::chrono::steady_clock::duration d); |
dcb07cfa | 1997 | |
854f6088 SM |
1998 | /* See symfile.h. */ |
1999 | ||
c906108c | 2000 | void |
9cbe5fff | 2001 | generic_load (const char *args, int from_tty) |
c906108c | 2002 | { |
a76d924d | 2003 | struct load_progress_data total_progress; |
55089490 | 2004 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2005 | struct ui_out *uiout = current_uiout; |
a76d924d | 2006 | |
d1a41061 PP |
2007 | if (args == NULL) |
2008 | error_no_arg (_("file to load")); | |
1986bccd | 2009 | |
773a1edc | 2010 | gdb_argv argv (args); |
1986bccd | 2011 | |
ee0c3293 | 2012 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2013 | |
2014 | if (argv[1] != NULL) | |
917317f4 | 2015 | { |
f698ca8e | 2016 | const char *endptr; |
ba5f2f8a | 2017 | |
f698ca8e | 2018 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2019 | |
2020 | /* If the last word was not a valid number then | |
dda83cd7 | 2021 | treat it as a file name with spaces in. */ |
1986bccd | 2022 | if (argv[1] == endptr) |
dda83cd7 | 2023 | error (_("Invalid download offset:%s."), argv[1]); |
1986bccd AS |
2024 | |
2025 | if (argv[2] != NULL) | |
2026 | error (_("Too many parameters.")); | |
917317f4 | 2027 | } |
c906108c | 2028 | |
c378eb4e | 2029 | /* Open the file for loading. */ |
ad80db5b | 2030 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget)); |
c906108c | 2031 | if (loadfile_bfd == NULL) |
ee0c3293 | 2032 | perror_with_name (filename.get ()); |
917317f4 | 2033 | |
192b62ce | 2034 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2035 | { |
ee0c3293 | 2036 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2037 | bfd_errmsg (bfd_get_error ())); |
2038 | } | |
c5aa993b | 2039 | |
5486c517 TT |
2040 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2041 | total_progress.total_size += bfd_section_size (asec); | |
a76d924d | 2042 | |
5486c517 TT |
2043 | for (asection *asec : gdb_bfd_sections (loadfile_bfd)) |
2044 | load_one_section (loadfile_bfd.get (), asec, &cbdata); | |
c2d11a7d | 2045 | |
dcb07cfa PA |
2046 | using namespace std::chrono; |
2047 | ||
2048 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2049 | |
a76d924d DJ |
2050 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2051 | load_progress) != 0) | |
2052 | error (_("Load failed")); | |
c906108c | 2053 | |
dcb07cfa | 2054 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2055 | |
55089490 | 2056 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2057 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2058 | uiout->text ("Start address "); |
ca8d69be | 2059 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2060 | uiout->text (", load size "); |
1f77b012 | 2061 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2062 | uiout->text ("\n"); |
fb14de7b | 2063 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2064 | |
38963c97 DJ |
2065 | /* Reset breakpoints, now that we have changed the load image. For |
2066 | instance, breakpoints may have been set (or reset, by | |
2067 | post_create_inferior) while connected to the target but before we | |
2068 | loaded the program. In that case, the prologue analyzer could | |
2069 | have read instructions from the target to find the right | |
2070 | breakpoint locations. Loading has changed the contents of that | |
2071 | memory. */ | |
2072 | ||
2073 | breakpoint_re_set (); | |
2074 | ||
a76d924d DJ |
2075 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2076 | total_progress.write_count, | |
dcb07cfa | 2077 | end_time - start_time); |
c906108c SS |
2078 | } |
2079 | ||
dcb07cfa PA |
2080 | /* Report on STREAM the performance of a memory transfer operation, |
2081 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2082 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2083 | that information is not available. TIME is how long the operation | |
2084 | lasted. */ | |
c906108c | 2085 | |
dcb07cfa | 2086 | static void |
d9fcf2fb | 2087 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2088 | unsigned long data_count, |
2089 | unsigned long write_count, | |
dcb07cfa | 2090 | std::chrono::steady_clock::duration time) |
917317f4 | 2091 | { |
dcb07cfa | 2092 | using namespace std::chrono; |
79a45e25 | 2093 | struct ui_out *uiout = current_uiout; |
2b71414d | 2094 | |
dcb07cfa | 2095 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2096 | |
112e8700 | 2097 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2098 | if (ms.count () > 0) |
8b93c638 | 2099 | { |
dcb07cfa | 2100 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2101 | |
112e8700 | 2102 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2103 | { |
1f77b012 | 2104 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2105 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2106 | } |
2107 | else if (rate < 1024) | |
2108 | { | |
1f77b012 | 2109 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2110 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2111 | } |
2112 | else | |
2113 | { | |
1f77b012 | 2114 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2115 | uiout->text (" KB/sec"); |
9f43d28c | 2116 | } |
8b93c638 JM |
2117 | } |
2118 | else | |
2119 | { | |
1f77b012 | 2120 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2121 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2122 | } |
2123 | if (write_count > 0) | |
2124 | { | |
112e8700 | 2125 | uiout->text (", "); |
1f77b012 | 2126 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2127 | uiout->text (" bytes/write"); |
8b93c638 | 2128 | } |
112e8700 | 2129 | uiout->text (".\n"); |
c906108c SS |
2130 | } |
2131 | ||
291f9a96 PT |
2132 | /* Add an OFFSET to the start address of each section in OBJF, except |
2133 | sections that were specified in ADDRS. */ | |
2134 | ||
2135 | static void | |
2136 | set_objfile_default_section_offset (struct objfile *objf, | |
2137 | const section_addr_info &addrs, | |
2138 | CORE_ADDR offset) | |
2139 | { | |
2140 | /* Add OFFSET to all sections by default. */ | |
6a053cb1 | 2141 | section_offsets offsets (objf->section_offsets.size (), offset); |
291f9a96 PT |
2142 | |
2143 | /* Create sorted lists of all sections in ADDRS as well as all | |
2144 | sections in OBJF. */ | |
2145 | ||
2146 | std::vector<const struct other_sections *> addrs_sorted | |
2147 | = addrs_section_sort (addrs); | |
2148 | ||
2149 | section_addr_info objf_addrs | |
2150 | = build_section_addr_info_from_objfile (objf); | |
2151 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2152 | = addrs_section_sort (objf_addrs); | |
2153 | ||
2154 | /* Walk the BFD section list, and if a matching section is found in | |
2155 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2156 | unchanged. | |
2157 | ||
2158 | Note that both lists may contain multiple sections with the same | |
2159 | name, and then the sections from ADDRS are matched in BFD order | |
2160 | (thanks to sectindex). */ | |
2161 | ||
2162 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2163 | = addrs_sorted.begin (); | |
ff27d073 | 2164 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2165 | { |
2166 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2167 | int cmp = -1; | |
2168 | ||
2169 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2170 | { | |
2171 | const struct other_sections *sect = *addrs_sorted_iter; | |
2172 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2173 | cmp = strcmp (sect_name, objf_name); | |
2174 | if (cmp <= 0) | |
2175 | ++addrs_sorted_iter; | |
2176 | } | |
2177 | ||
2178 | if (cmp == 0) | |
6a053cb1 | 2179 | offsets[objf_sect->sectindex] = 0; |
291f9a96 PT |
2180 | } |
2181 | ||
2182 | /* Apply the new section offsets. */ | |
6a053cb1 | 2183 | objfile_relocate (objf, offsets); |
291f9a96 PT |
2184 | } |
2185 | ||
c906108c SS |
2186 | /* This function allows the addition of incrementally linked object files. |
2187 | It does not modify any state in the target, only in the debugger. */ | |
2188 | ||
c906108c | 2189 | static void |
2cf311eb | 2190 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2191 | { |
5af949e3 | 2192 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2193 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2194 | char *arg; |
2acceee2 | 2195 | int argcnt = 0; |
76ad5e1e | 2196 | struct objfile *objf; |
b15cc25c PA |
2197 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2198 | symfile_add_flags add_flags = 0; | |
2199 | ||
2200 | if (from_tty) | |
2201 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2202 | |
a39a16c4 | 2203 | struct sect_opt |
2acceee2 | 2204 | { |
a121b7c1 PA |
2205 | const char *name; |
2206 | const char *value; | |
a39a16c4 | 2207 | }; |
db162d44 | 2208 | |
40fc416f SDJ |
2209 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2210 | bool stop_processing_options = false; | |
291f9a96 | 2211 | CORE_ADDR offset = 0; |
c5aa993b | 2212 | |
c906108c SS |
2213 | dont_repeat (); |
2214 | ||
2215 | if (args == NULL) | |
8a3fe4f8 | 2216 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2217 | |
40fc416f | 2218 | bool seen_addr = false; |
291f9a96 | 2219 | bool seen_offset = false; |
773a1edc | 2220 | gdb_argv argv (args); |
db162d44 | 2221 | |
5b96932b AS |
2222 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2223 | { | |
40fc416f | 2224 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2225 | { |
40fc416f | 2226 | if (filename == NULL) |
41dc8db8 | 2227 | { |
40fc416f SDJ |
2228 | /* First non-option argument is always the filename. */ |
2229 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2230 | } |
40fc416f | 2231 | else if (!seen_addr) |
41dc8db8 | 2232 | { |
40fc416f SDJ |
2233 | /* The second non-option argument is always the text |
2234 | address at which to load the program. */ | |
2235 | sect_opts[0].value = arg; | |
2236 | seen_addr = true; | |
41dc8db8 MB |
2237 | } |
2238 | else | |
02ca603a | 2239 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2240 | } |
40fc416f SDJ |
2241 | else if (strcmp (arg, "-readnow") == 0) |
2242 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2243 | else if (strcmp (arg, "-readnever") == 0) |
2244 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2245 | else if (strcmp (arg, "-s") == 0) |
2246 | { | |
2247 | if (argv[argcnt + 1] == NULL) | |
2248 | error (_("Missing section name after \"-s\"")); | |
2249 | else if (argv[argcnt + 2] == NULL) | |
2250 | error (_("Missing section address after \"-s\"")); | |
2251 | ||
2252 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2253 | ||
2254 | sect_opts.push_back (sect); | |
2255 | argcnt += 2; | |
2256 | } | |
291f9a96 PT |
2257 | else if (strcmp (arg, "-o") == 0) |
2258 | { | |
2259 | arg = argv[++argcnt]; | |
2260 | if (arg == NULL) | |
2261 | error (_("Missing argument to -o")); | |
2262 | ||
2263 | offset = parse_and_eval_address (arg); | |
2264 | seen_offset = true; | |
2265 | } | |
40fc416f SDJ |
2266 | else if (strcmp (arg, "--") == 0) |
2267 | stop_processing_options = true; | |
2268 | else | |
2269 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2270 | } |
c906108c | 2271 | |
40fc416f SDJ |
2272 | if (filename == NULL) |
2273 | error (_("You must provide a filename to be loaded.")); | |
2274 | ||
97cbe998 SDJ |
2275 | validate_readnow_readnever (flags); |
2276 | ||
c378eb4e | 2277 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2278 | a sect_addr_info structure to be passed around to other |
2279 | functions. We have to split this up into separate print | |
bb599908 | 2280 | statements because hex_string returns a local static |
c378eb4e | 2281 | string. */ |
5417f6dc | 2282 | |
6cb06a8c TT |
2283 | gdb_printf (_("add symbol table from file \"%s\""), |
2284 | filename.get ()); | |
37e136b1 | 2285 | section_addr_info section_addrs; |
ed6dfe51 PT |
2286 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2287 | if (!seen_addr) | |
2288 | ++it; | |
2289 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2290 | { |
db162d44 | 2291 | CORE_ADDR addr; |
ed6dfe51 PT |
2292 | const char *val = it->value; |
2293 | const char *sec = it->name; | |
5417f6dc | 2294 | |
ed6dfe51 | 2295 | if (section_addrs.empty ()) |
6cb06a8c | 2296 | gdb_printf (_(" at\n")); |
ae822768 | 2297 | addr = parse_and_eval_address (val); |
db162d44 | 2298 | |
db162d44 | 2299 | /* Here we store the section offsets in the order they were |
dda83cd7 SM |
2300 | entered on the command line. Every array element is |
2301 | assigned an ascending section index to preserve the above | |
2302 | order over an unstable sorting algorithm. This dummy | |
2303 | index is not used for any other purpose. | |
d81a3eaf PT |
2304 | */ |
2305 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
6cb06a8c TT |
2306 | gdb_printf ("\t%s_addr = %s\n", sec, |
2307 | paddress (gdbarch, addr)); | |
db162d44 | 2308 | |
5417f6dc | 2309 | /* The object's sections are initialized when a |
db162d44 | 2310 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2311 | This happens in reread_symbols. |
db162d44 EZ |
2312 | At this point, we don't know what file type this is, |
2313 | so we can't determine what section names are valid. */ | |
2acceee2 | 2314 | } |
291f9a96 | 2315 | if (seen_offset) |
6cb06a8c TT |
2316 | gdb_printf (_("%s offset by %s\n"), |
2317 | (section_addrs.empty () | |
2318 | ? _(" with all sections") | |
2319 | : _("with other sections")), | |
2320 | paddress (gdbarch, offset)); | |
291f9a96 | 2321 | else if (section_addrs.empty ()) |
6cb06a8c | 2322 | gdb_printf ("\n"); |
db162d44 | 2323 | |
2acceee2 | 2324 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2325 | error (_("Not confirmed.")); |
c906108c | 2326 | |
37e136b1 TT |
2327 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2328 | flags); | |
f5686554 TT |
2329 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2330 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2331 | filename.get ()); | |
76ad5e1e | 2332 | |
291f9a96 PT |
2333 | if (seen_offset) |
2334 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2335 | ||
d9eebde0 | 2336 | current_program_space->add_target_sections (objf); |
c906108c SS |
2337 | |
2338 | /* Getting new symbols may change our opinion about what is | |
2339 | frameless. */ | |
2340 | reinit_frame_cache (); | |
2341 | } | |
2342 | \f | |
70992597 | 2343 | |
63644780 NB |
2344 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2345 | ||
2346 | static void | |
2cf311eb | 2347 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2348 | { |
63644780 | 2349 | struct objfile *objf = NULL; |
63644780 | 2350 | struct program_space *pspace = current_program_space; |
63644780 NB |
2351 | |
2352 | dont_repeat (); | |
2353 | ||
2354 | if (args == NULL) | |
2355 | error (_("remove-symbol-file: no symbol file provided")); | |
2356 | ||
773a1edc | 2357 | gdb_argv argv (args); |
63644780 NB |
2358 | |
2359 | if (strcmp (argv[0], "-a") == 0) | |
2360 | { | |
2361 | /* Interpret the next argument as an address. */ | |
2362 | CORE_ADDR addr; | |
2363 | ||
2364 | if (argv[1] == NULL) | |
2365 | error (_("Missing address argument")); | |
2366 | ||
2367 | if (argv[2] != NULL) | |
2368 | error (_("Junk after %s"), argv[1]); | |
2369 | ||
2370 | addr = parse_and_eval_address (argv[1]); | |
2371 | ||
2030c079 | 2372 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2373 | { |
aed57c53 TT |
2374 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2375 | && (objfile->flags & OBJF_SHARED) != 0 | |
2376 | && objfile->pspace == pspace | |
2377 | && is_addr_in_objfile (addr, objfile)) | |
2378 | { | |
2379 | objf = objfile; | |
2380 | break; | |
2381 | } | |
63644780 NB |
2382 | } |
2383 | } | |
2384 | else if (argv[0] != NULL) | |
2385 | { | |
2386 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2387 | |
2388 | if (argv[1] != NULL) | |
2389 | error (_("Junk after %s"), argv[0]); | |
2390 | ||
ee0c3293 | 2391 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2392 | |
2030c079 | 2393 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2394 | { |
aed57c53 TT |
2395 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2396 | && (objfile->flags & OBJF_SHARED) != 0 | |
2397 | && objfile->pspace == pspace | |
2398 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2399 | { | |
2400 | objf = objfile; | |
2401 | break; | |
2402 | } | |
63644780 NB |
2403 | } |
2404 | } | |
2405 | ||
2406 | if (objf == NULL) | |
2407 | error (_("No symbol file found")); | |
2408 | ||
2409 | if (from_tty | |
2410 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2411 | objfile_name (objf))) | |
2412 | error (_("Not confirmed.")); | |
2413 | ||
268e4f09 | 2414 | objf->unlink (); |
63644780 | 2415 | clear_symtab_users (0); |
63644780 NB |
2416 | } |
2417 | ||
c906108c | 2418 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2419 | |
c906108c | 2420 | void |
9dec38d3 | 2421 | reread_symbols (int from_tty) |
c906108c | 2422 | { |
c906108c | 2423 | long new_modtime; |
c906108c SS |
2424 | struct stat new_statbuf; |
2425 | int res; | |
4c404b8b | 2426 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2427 | |
bf227d61 | 2428 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2429 | { |
98badbfd | 2430 | if (objfile->obfd.get () == NULL) |
9cce227f TG |
2431 | continue; |
2432 | ||
2433 | /* Separate debug objfiles are handled in the main objfile. */ | |
2434 | if (objfile->separate_debug_objfile_backlink) | |
2435 | continue; | |
2436 | ||
02aeec7b JB |
2437 | /* If this object is from an archive (what you usually create with |
2438 | `ar', often called a `static library' on most systems, though | |
2439 | a `shared library' on AIX is also an archive), then you should | |
2440 | stat on the archive name, not member name. */ | |
9cce227f | 2441 | if (objfile->obfd->my_archive) |
c7e97679 | 2442 | res = stat (bfd_get_filename (objfile->obfd->my_archive), &new_statbuf); |
9cce227f | 2443 | else |
4262abfb | 2444 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2445 | if (res != 0) |
2446 | { | |
c378eb4e | 2447 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
6cb06a8c TT |
2448 | gdb_printf (_("`%s' has disappeared; keeping its symbols.\n"), |
2449 | objfile_name (objfile)); | |
9cce227f TG |
2450 | continue; |
2451 | } | |
2452 | new_modtime = new_statbuf.st_mtime; | |
2453 | if (new_modtime != objfile->mtime) | |
2454 | { | |
6cb06a8c TT |
2455 | gdb_printf (_("`%s' has changed; re-reading symbols.\n"), |
2456 | objfile_name (objfile)); | |
9cce227f TG |
2457 | |
2458 | /* There are various functions like symbol_file_add, | |
2459 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2460 | appear to do what we want. But they have various other | |
2461 | effects which we *don't* want. So we just do stuff | |
2462 | ourselves. We don't worry about mapped files (for one thing, | |
2463 | any mapped file will be out of date). */ | |
2464 | ||
2465 | /* If we get an error, blow away this objfile (not sure if | |
2466 | that is the correct response for things like shared | |
2467 | libraries). */ | |
268e4f09 | 2468 | objfile_up objfile_holder (objfile); |
ed2b3126 | 2469 | |
9cce227f | 2470 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2471 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2472 | |
7e10abd1 | 2473 | if (current_program_space->exec_bfd () != NULL |
98badbfd | 2474 | && filename_cmp (bfd_get_filename (objfile->obfd.get ()), |
7e10abd1 | 2475 | bfd_get_filename (current_program_space->exec_bfd ())) == 0) |
9cce227f TG |
2476 | { |
2477 | /* Reload EXEC_BFD without asking anything. */ | |
2478 | ||
98badbfd | 2479 | exec_file_attach (bfd_get_filename (objfile->obfd.get ()), 0); |
9cce227f TG |
2480 | } |
2481 | ||
f6eeced0 JK |
2482 | /* Keep the calls order approx. the same as in free_objfile. */ |
2483 | ||
2484 | /* Free the separate debug objfiles. It will be | |
2485 | automatically recreated by sym_read. */ | |
2486 | free_objfile_separate_debug (objfile); | |
2487 | ||
7b71fc97 L |
2488 | /* Clear the stale source cache. */ |
2489 | forget_cached_source_info (); | |
2490 | ||
f6eeced0 JK |
2491 | /* Remove any references to this objfile in the global |
2492 | value lists. */ | |
2493 | preserve_values (objfile); | |
2494 | ||
2495 | /* Nuke all the state that we will re-read. Much of the following | |
2496 | code which sets things to NULL really is necessary to tell | |
2497 | other parts of GDB that there is nothing currently there. | |
2498 | ||
2499 | Try to keep the freeing order compatible with free_objfile. */ | |
2500 | ||
2501 | if (objfile->sf != NULL) | |
2502 | { | |
2503 | (*objfile->sf->sym_finish) (objfile); | |
2504 | } | |
2505 | ||
08b8a139 | 2506 | objfile->registry_fields.clear_registry (); |
f6eeced0 | 2507 | |
e1507e95 | 2508 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2509 | { |
98badbfd | 2510 | gdb_bfd_ref_ptr obfd = objfile->obfd; |
b16c44de | 2511 | const char *obfd_filename; |
a4453b7e | 2512 | |
98badbfd | 2513 | obfd_filename = bfd_get_filename (objfile->obfd.get ()); |
a4453b7e TT |
2514 | /* Open the new BFD before freeing the old one, so that |
2515 | the filename remains live. */ | |
ad80db5b | 2516 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget)); |
98badbfd | 2517 | objfile->obfd = std::move (temp); |
e1507e95 | 2518 | if (objfile->obfd == NULL) |
192b62ce | 2519 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2520 | } |
2521 | ||
c0c9f665 | 2522 | std::string original_name = objfile->original_name; |
24ba069a | 2523 | |
9cce227f | 2524 | /* bfd_openr sets cacheable to true, which is what we want. */ |
98badbfd | 2525 | if (!bfd_check_format (objfile->obfd.get (), bfd_object)) |
4262abfb | 2526 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2527 | bfd_errmsg (bfd_get_error ())); |
2528 | ||
41664b45 DG |
2529 | /* NB: after this call to obstack_free, objfiles_changed |
2530 | will need to be called (see discussion below). */ | |
9cce227f TG |
2531 | obstack_free (&objfile->objfile_obstack, 0); |
2532 | objfile->sections = NULL; | |
9d428aae SM |
2533 | objfile->section_offsets.clear (); |
2534 | objfile->sect_index_bss = -1; | |
2535 | objfile->sect_index_data = -1; | |
2536 | objfile->sect_index_rodata = -1; | |
2537 | objfile->sect_index_text = -1; | |
43f3e411 | 2538 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2539 | objfile->template_symbols = NULL; |
cf250e36 | 2540 | objfile->static_links.reset (nullptr); |
9cce227f | 2541 | |
9cce227f TG |
2542 | /* obstack_init also initializes the obstack so it is |
2543 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2544 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2545 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2546 | |
846060df JB |
2547 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2548 | data on the objfile's obstack (if sharing data across | |
2549 | multiple users is not possible), so it's important to | |
2550 | do it *after* the obstack has been initialized. */ | |
2551 | set_objfile_per_bfd (objfile); | |
2552 | ||
224c3ddb | 2553 | objfile->original_name |
efba19b0 | 2554 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2555 | |
779bd270 DE |
2556 | /* Reset the sym_fns pointer. The ELF reader can change it |
2557 | based on whether .gdb_index is present, and we need it to | |
2558 | start over. PR symtab/15885 */ | |
98badbfd | 2559 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd.get ())); |
e1114590 | 2560 | objfile->qf.clear (); |
779bd270 | 2561 | |
d82ea6a8 | 2562 | build_objfile_section_table (objfile); |
9cce227f | 2563 | |
9cce227f TG |
2564 | /* What the hell is sym_new_init for, anyway? The concept of |
2565 | distinguishing between the main file and additional files | |
2566 | in this way seems rather dubious. */ | |
a42d7dd8 | 2567 | if (objfile == current_program_space->symfile_object_file) |
c906108c | 2568 | { |
9cce227f | 2569 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2570 | } |
9cce227f TG |
2571 | |
2572 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2573 | clear_complaints (); |
608e2dbb TT |
2574 | |
2575 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2576 | |
2577 | /* We are about to read new symbols and potentially also | |
2578 | DWARF information. Some targets may want to pass addresses | |
2579 | read from DWARF DIE's through an adjustment function before | |
2580 | saving them, like MIPS, which may call into | |
2581 | "find_pc_section". When called, that function will make | |
2582 | use of per-objfile program space data. | |
2583 | ||
2584 | Since we discarded our section information above, we have | |
2585 | dangling pointers in the per-objfile program space data | |
2586 | structure. Force GDB to update the section mapping | |
2587 | information by letting it know the objfile has changed, | |
2588 | making the dangling pointers point to correct data | |
2589 | again. */ | |
2590 | ||
2591 | objfiles_changed (); | |
2592 | ||
9d428aae SM |
2593 | /* Recompute section offsets and section indices. */ |
2594 | objfile->sf->sym_offsets (objfile, {}); | |
2595 | ||
608e2dbb | 2596 | read_symbols (objfile, 0); |
b11896a5 | 2597 | |
9dec38d3 TV |
2598 | if ((objfile->flags & OBJF_READNOW)) |
2599 | { | |
2600 | const int mainline = objfile->flags & OBJF_MAINLINE; | |
2601 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) | |
2602 | && readnow_symbol_files); | |
2603 | if (should_print) | |
6cb06a8c TT |
2604 | gdb_printf (_("Expanding full symbols from %ps...\n"), |
2605 | styled_string (file_name_style.style (), | |
2606 | objfile_name (objfile))); | |
9dec38d3 TV |
2607 | |
2608 | objfile->expand_all_symtabs (); | |
2609 | } | |
2610 | ||
9cce227f | 2611 | if (!objfile_has_symbols (objfile)) |
c906108c | 2612 | { |
1285ce86 | 2613 | gdb_stdout->wrap_here (0); |
6cb06a8c | 2614 | gdb_printf (_("(no debugging symbols found)\n")); |
1285ce86 | 2615 | gdb_stdout->wrap_here (0); |
c5aa993b | 2616 | } |
9cce227f TG |
2617 | |
2618 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2619 | clear_complaints (); |
9cce227f TG |
2620 | |
2621 | /* Getting new symbols may change our opinion about what is | |
2622 | frameless. */ | |
2623 | ||
2624 | reinit_frame_cache (); | |
2625 | ||
2626 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2627 | objfile_holder.release (); |
286526c1 | 2628 | defer_clear_users.release (); |
9cce227f TG |
2629 | |
2630 | /* If the mtime has changed between the time we set new_modtime | |
2631 | and now, we *want* this to be out of date, so don't call stat | |
2632 | again now. */ | |
2633 | objfile->mtime = new_modtime; | |
9cce227f | 2634 | init_entry_point_info (objfile); |
4ac39b97 | 2635 | |
4c404b8b | 2636 | new_objfiles.push_back (objfile); |
c906108c SS |
2637 | } |
2638 | } | |
c906108c | 2639 | |
4c404b8b | 2640 | if (!new_objfiles.empty ()) |
ea53e89f | 2641 | { |
c1e56572 | 2642 | clear_symtab_users (0); |
4ac39b97 | 2643 | |
08b8a139 | 2644 | /* The registry for each objfile was cleared and |
76727919 | 2645 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2646 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2647 | for (auto iter : new_objfiles) |
c486b610 | 2648 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2649 | |
ea53e89f | 2650 | /* At least one objfile has changed, so we can consider that |
dda83cd7 | 2651 | the executable we're debugging has changed too. */ |
76727919 | 2652 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2653 | } |
c906108c | 2654 | } |
c906108c SS |
2655 | \f |
2656 | ||
593e3209 | 2657 | struct filename_language |
c5aa993b | 2658 | { |
593e3209 SM |
2659 | filename_language (const std::string &ext_, enum language lang_) |
2660 | : ext (ext_), lang (lang_) | |
2661 | {} | |
3fcf0b0d | 2662 | |
593e3209 SM |
2663 | std::string ext; |
2664 | enum language lang; | |
2665 | }; | |
c906108c | 2666 | |
593e3209 | 2667 | static std::vector<filename_language> filename_language_table; |
c906108c | 2668 | |
56618e20 TT |
2669 | /* See symfile.h. */ |
2670 | ||
2671 | void | |
2672 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2673 | { |
e171d6f1 | 2674 | gdb_assert (ext != nullptr); |
593e3209 | 2675 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2676 | } |
2677 | ||
e0700ba4 | 2678 | static std::string ext_args; |
920d2a44 AC |
2679 | static void |
2680 | show_ext_args (struct ui_file *file, int from_tty, | |
2681 | struct cmd_list_element *c, const char *value) | |
2682 | { | |
6cb06a8c TT |
2683 | gdb_printf (file, |
2684 | _("Mapping between filename extension " | |
2685 | "and source language is \"%s\".\n"), | |
2686 | value); | |
920d2a44 | 2687 | } |
c906108c SS |
2688 | |
2689 | static void | |
eb4c3f4a TT |
2690 | set_ext_lang_command (const char *args, |
2691 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2692 | { |
e0700ba4 SM |
2693 | const char *begin = ext_args.c_str (); |
2694 | const char *end = ext_args.c_str (); | |
c906108c | 2695 | |
c378eb4e | 2696 | /* First arg is filename extension, starting with '.' */ |
e0700ba4 SM |
2697 | if (*end != '.') |
2698 | error (_("'%s': Filename extension must begin with '.'"), ext_args.c_str ()); | |
c906108c SS |
2699 | |
2700 | /* Find end of first arg. */ | |
e0700ba4 SM |
2701 | while (*end != '\0' && !isspace (*end)) |
2702 | end++; | |
c906108c | 2703 | |
e0700ba4 | 2704 | if (*end == '\0') |
3e43a32a MS |
2705 | error (_("'%s': two arguments required -- " |
2706 | "filename extension and language"), | |
e0700ba4 | 2707 | ext_args.c_str ()); |
c906108c | 2708 | |
e0700ba4 SM |
2709 | /* Extract first arg, the extension. */ |
2710 | std::string extension = ext_args.substr (0, end - begin); | |
c906108c SS |
2711 | |
2712 | /* Find beginning of second arg, which should be a source language. */ | |
e0700ba4 | 2713 | begin = skip_spaces (end); |
c906108c | 2714 | |
e0700ba4 | 2715 | if (*begin == '\0') |
3e43a32a MS |
2716 | error (_("'%s': two arguments required -- " |
2717 | "filename extension and language"), | |
e0700ba4 | 2718 | ext_args.c_str ()); |
c906108c SS |
2719 | |
2720 | /* Lookup the language from among those we know. */ | |
e0700ba4 | 2721 | language lang = language_enum (begin); |
c906108c | 2722 | |
593e3209 | 2723 | auto it = filename_language_table.begin (); |
c906108c | 2724 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2725 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2726 | { |
e0700ba4 | 2727 | if (it->ext == extension) |
3fcf0b0d TT |
2728 | break; |
2729 | } | |
c906108c | 2730 | |
593e3209 | 2731 | if (it == filename_language_table.end ()) |
c906108c | 2732 | { |
c378eb4e | 2733 | /* New file extension. */ |
e0700ba4 | 2734 | add_filename_language (extension.data (), lang); |
c906108c SS |
2735 | } |
2736 | else | |
2737 | { | |
c378eb4e | 2738 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2739 | |
2740 | /* if (from_tty) */ | |
2741 | /* query ("Really make files of type %s '%s'?", */ | |
2742 | /* ext_args, language_str (lang)); */ | |
2743 | ||
593e3209 | 2744 | it->lang = lang; |
c906108c SS |
2745 | } |
2746 | } | |
2747 | ||
2748 | static void | |
1d12d88f | 2749 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2750 | { |
6cb06a8c TT |
2751 | gdb_printf (_("Filename extensions and the languages they represent:")); |
2752 | gdb_printf ("\n\n"); | |
593e3209 | 2753 | for (const filename_language &entry : filename_language_table) |
6cb06a8c TT |
2754 | gdb_printf ("\t%s\t- %s\n", entry.ext.c_str (), |
2755 | language_str (entry.lang)); | |
c906108c SS |
2756 | } |
2757 | ||
c906108c | 2758 | enum language |
dd786858 | 2759 | deduce_language_from_filename (const char *filename) |
c906108c | 2760 | { |
e6a959d6 | 2761 | const char *cp; |
c906108c SS |
2762 | |
2763 | if (filename != NULL) | |
2764 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2765 | { |
593e3209 SM |
2766 | for (const filename_language &entry : filename_language_table) |
2767 | if (entry.ext == cp) | |
2768 | return entry.lang; | |
3fcf0b0d | 2769 | } |
c906108c SS |
2770 | |
2771 | return language_unknown; | |
2772 | } | |
2773 | \f | |
43f3e411 DE |
2774 | /* Allocate and initialize a new symbol table. |
2775 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2776 | |
2777 | struct symtab * | |
f71ad555 SM |
2778 | allocate_symtab (struct compunit_symtab *cust, const char *filename, |
2779 | const char *filename_for_id) | |
c906108c | 2780 | { |
f1f58f10 | 2781 | struct objfile *objfile = cust->objfile (); |
43f3e411 DE |
2782 | struct symtab *symtab |
2783 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2784 | |
be1e3d3e | 2785 | symtab->filename = objfile->intern (filename); |
f71ad555 | 2786 | symtab->filename_for_id = objfile->intern (filename_for_id); |
c5aa993b | 2787 | symtab->fullname = NULL; |
1ee2e9f9 | 2788 | symtab->set_language (deduce_language_from_filename (filename)); |
c906108c | 2789 | |
db0fec5c DE |
2790 | /* This can be very verbose with lots of headers. |
2791 | Only print at higher debug levels. */ | |
2792 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2793 | { |
2794 | /* Be a bit clever with debugging messages, and don't print objfile | |
2795 | every time, only when it changes. */ | |
9984dd99 SM |
2796 | static std::string last_objfile_name; |
2797 | const char *this_objfile_name = objfile_name (objfile); | |
45cfd468 | 2798 | |
9984dd99 | 2799 | if (last_objfile_name.empty () || last_objfile_name != this_objfile_name) |
45cfd468 | 2800 | { |
9984dd99 | 2801 | last_objfile_name = this_objfile_name; |
2ab317fb SM |
2802 | |
2803 | symtab_create_debug_printf_v | |
2804 | ("creating one or more symtabs for objfile %s", this_objfile_name); | |
45cfd468 | 2805 | } |
2ab317fb SM |
2806 | |
2807 | symtab_create_debug_printf_v ("created symtab %s for module %s", | |
2808 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2809 | } |
2810 | ||
43f3e411 | 2811 | /* Add it to CUST's list of symtabs. */ |
43b49762 | 2812 | cust->add_filetab (symtab); |
43f3e411 DE |
2813 | |
2814 | /* Backlink to the containing compunit symtab. */ | |
c6159652 | 2815 | symtab->set_compunit (cust); |
43f3e411 DE |
2816 | |
2817 | return symtab; | |
2818 | } | |
2819 | ||
2820 | /* Allocate and initialize a new compunit. | |
2821 | NAME is the name of the main source file, if there is one, or some | |
2822 | descriptive text if there are no source files. */ | |
2823 | ||
2824 | struct compunit_symtab * | |
2825 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2826 | { | |
2827 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2828 | struct compunit_symtab); | |
2829 | const char *saved_name; | |
2830 | ||
f1f58f10 | 2831 | cu->set_objfile (objfile); |
43f3e411 DE |
2832 | |
2833 | /* The name we record here is only for display/debugging purposes. | |
2834 | Just save the basename to avoid path issues (too long for display, | |
2835 | relative vs absolute, etc.). */ | |
2836 | saved_name = lbasename (name); | |
021887d8 | 2837 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 | 2838 | |
422f1ea2 | 2839 | cu->set_debugformat ("unknown"); |
43f3e411 | 2840 | |
2ab317fb SM |
2841 | symtab_create_debug_printf_v ("created compunit symtab %s for %s", |
2842 | host_address_to_string (cu), | |
2843 | cu->name); | |
43f3e411 DE |
2844 | |
2845 | return cu; | |
2846 | } | |
2847 | ||
2848 | /* Hook CU to the objfile it comes from. */ | |
2849 | ||
2850 | void | |
2851 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2852 | { | |
f1f58f10 SM |
2853 | cu->next = cu->objfile ()->compunit_symtabs; |
2854 | cu->objfile ()->compunit_symtabs = cu; | |
c906108c | 2855 | } |
c906108c | 2856 | \f |
c5aa993b | 2857 | |
b15cc25c PA |
2858 | /* Reset all data structures in gdb which may contain references to |
2859 | symbol table data. */ | |
c906108c SS |
2860 | |
2861 | void | |
b15cc25c | 2862 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2863 | { |
2864 | /* Someday, we should do better than this, by only blowing away | |
2865 | the things that really need to be blown. */ | |
c0501be5 DJ |
2866 | |
2867 | /* Clear the "current" symtab first, because it is no longer valid. | |
2868 | breakpoint_re_set may try to access the current symtab. */ | |
2869 | clear_current_source_symtab_and_line (); | |
2870 | ||
c906108c | 2871 | clear_displays (); |
1bfeeb0f | 2872 | clear_last_displayed_sal (); |
c906108c | 2873 | clear_pc_function_cache (); |
76727919 | 2874 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2875 | |
e700d1b2 JB |
2876 | /* Now that the various caches have been cleared, we can re_set |
2877 | our breakpoints without risking it using stale data. */ | |
2878 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2879 | breakpoint_re_set (); | |
c906108c | 2880 | } |
c906108c | 2881 | \f |
c906108c SS |
2882 | /* OVERLAYS: |
2883 | The following code implements an abstraction for debugging overlay sections. | |
2884 | ||
2885 | The target model is as follows: | |
2886 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2887 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2888 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2889 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2890 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2891 | sections should be considered to be mapped from the VMA to the LMA. |
2892 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2893 | For instance, if a section has been mapped then its contents |
c5aa993b | 2894 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2895 | |
2896 | Two levels of debugger support for overlays are available. One is | |
2897 | "manual", in which the debugger relies on the user to tell it which | |
2898 | overlays are currently mapped. This level of support is | |
2899 | implemented entirely in the core debugger, and the information about | |
2900 | whether a section is mapped is kept in the objfile->obj_section table. | |
2901 | ||
2902 | The second level of support is "automatic", and is only available if | |
2903 | the target-specific code provides functionality to read the target's | |
2904 | overlay mapping table, and translate its contents for the debugger | |
2905 | (by updating the mapped state information in the obj_section tables). | |
2906 | ||
2907 | The interface is as follows: | |
c5aa993b JM |
2908 | User commands: |
2909 | overlay map <name> -- tell gdb to consider this section mapped | |
2910 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2911 | overlay list -- list the sections that GDB thinks are mapped | |
2912 | overlay read-target -- get the target's state of what's mapped | |
2913 | overlay off/manual/auto -- set overlay debugging state | |
2914 | Functional interface: | |
2915 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2916 | section, return that section. | |
5417f6dc | 2917 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2918 | the pc, either in its VMA or its LMA |
714835d5 | 2919 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2920 | section_is_overlay(sect): true if section's VMA != LMA |
2921 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2922 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2923 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2924 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2925 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2926 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2927 | either in VMA or LMA depending on whether | |
c378eb4e | 2928 | the symbol's section is currently mapped. */ |
c906108c SS |
2929 | |
2930 | /* Overlay debugging state: */ | |
2931 | ||
d874f1e2 | 2932 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2933 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2934 | |
c906108c | 2935 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2936 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2937 | SECTION is loaded at an address different from where it will "run". */ |
2938 | ||
2939 | int | |
714835d5 | 2940 | section_is_overlay (struct obj_section *section) |
c906108c | 2941 | { |
714835d5 UW |
2942 | if (overlay_debugging && section) |
2943 | { | |
714835d5 | 2944 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2945 | |
fd361982 AM |
2946 | if (bfd_section_lma (bfd_section) != 0 |
2947 | && bfd_section_lma (bfd_section) != bfd_section_vma (bfd_section)) | |
714835d5 UW |
2948 | return 1; |
2949 | } | |
c906108c SS |
2950 | |
2951 | return 0; | |
2952 | } | |
2953 | ||
2954 | /* Function: overlay_invalidate_all (void) | |
2955 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2956 | ||
2957 | static void | |
fba45db2 | 2958 | overlay_invalidate_all (void) |
c906108c | 2959 | { |
c906108c SS |
2960 | struct obj_section *sect; |
2961 | ||
2030c079 | 2962 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
2963 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
2964 | if (section_is_overlay (sect)) | |
2965 | sect->ovly_mapped = -1; | |
c906108c SS |
2966 | } |
2967 | ||
714835d5 | 2968 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2969 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2970 | |
2971 | Access to the ovly_mapped flag is restricted to this function, so | |
2972 | that we can do automatic update. If the global flag | |
2973 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2974 | overlay_invalidate_all. If the mapped state of the particular | |
2975 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2976 | ||
714835d5 UW |
2977 | int |
2978 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2979 | { |
9216df95 UW |
2980 | struct gdbarch *gdbarch; |
2981 | ||
714835d5 | 2982 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2983 | return 0; |
2984 | ||
c5aa993b | 2985 | switch (overlay_debugging) |
c906108c SS |
2986 | { |
2987 | default: | |
d874f1e2 | 2988 | case ovly_off: |
c5aa993b | 2989 | return 0; /* overlay debugging off */ |
d874f1e2 | 2990 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2991 | /* Unles there is a gdbarch_overlay_update function, |
dda83cd7 | 2992 | there's really nothing useful to do here (can't really go auto). */ |
08feed99 | 2993 | gdbarch = osect->objfile->arch (); |
9216df95 | 2994 | if (gdbarch_overlay_update_p (gdbarch)) |
c906108c SS |
2995 | { |
2996 | if (overlay_cache_invalid) | |
2997 | { | |
2998 | overlay_invalidate_all (); | |
2999 | overlay_cache_invalid = 0; | |
3000 | } | |
3001 | if (osect->ovly_mapped == -1) | |
9216df95 | 3002 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3003 | } |
86a73007 | 3004 | /* fall thru */ |
d874f1e2 | 3005 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3006 | return osect->ovly_mapped == 1; |
3007 | } | |
3008 | } | |
3009 | ||
c906108c SS |
3010 | /* Function: pc_in_unmapped_range |
3011 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3012 | ||
3013 | CORE_ADDR | |
714835d5 | 3014 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3015 | { |
714835d5 UW |
3016 | if (section_is_overlay (section)) |
3017 | { | |
714835d5 | 3018 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3019 | |
714835d5 | 3020 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
fd361982 | 3021 | bfd_vma size = bfd_section_size (bfd_section); |
0c1bcd23 | 3022 | CORE_ADDR offset = section->offset (); |
714835d5 | 3023 | |
fd361982 AM |
3024 | if (bfd_section_lma (bfd_section) + offset <= pc |
3025 | && pc < bfd_section_lma (bfd_section) + offset + size) | |
714835d5 UW |
3026 | return 1; |
3027 | } | |
c906108c | 3028 | |
c906108c SS |
3029 | return 0; |
3030 | } | |
3031 | ||
3032 | /* Function: pc_in_mapped_range | |
3033 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3034 | ||
3035 | CORE_ADDR | |
714835d5 | 3036 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3037 | { |
714835d5 UW |
3038 | if (section_is_overlay (section)) |
3039 | { | |
0c1bcd23 SM |
3040 | if (section->addr () <= pc |
3041 | && pc < section->endaddr ()) | |
714835d5 UW |
3042 | return 1; |
3043 | } | |
c906108c | 3044 | |
c906108c SS |
3045 | return 0; |
3046 | } | |
3047 | ||
9ec8e6a0 JB |
3048 | /* Return true if the mapped ranges of sections A and B overlap, false |
3049 | otherwise. */ | |
3b7bacac | 3050 | |
b9362cc7 | 3051 | static int |
714835d5 | 3052 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3053 | { |
0c1bcd23 SM |
3054 | CORE_ADDR a_start = a->addr (); |
3055 | CORE_ADDR a_end = a->endaddr (); | |
3056 | CORE_ADDR b_start = b->addr (); | |
3057 | CORE_ADDR b_end = b->endaddr (); | |
9ec8e6a0 JB |
3058 | |
3059 | return (a_start < b_end && b_start < a_end); | |
3060 | } | |
3061 | ||
c906108c SS |
3062 | /* Function: overlay_unmapped_address (PC, SECTION) |
3063 | Returns the address corresponding to PC in the unmapped (load) range. | |
3064 | May be the same as PC. */ | |
3065 | ||
3066 | CORE_ADDR | |
714835d5 | 3067 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3068 | { |
714835d5 UW |
3069 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3070 | { | |
714835d5 | 3071 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3072 | |
fd361982 AM |
3073 | return (pc + bfd_section_lma (bfd_section) |
3074 | - bfd_section_vma (bfd_section)); | |
714835d5 | 3075 | } |
c906108c SS |
3076 | |
3077 | return pc; | |
3078 | } | |
3079 | ||
3080 | /* Function: overlay_mapped_address (PC, SECTION) | |
3081 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3082 | May be the same as PC. */ | |
3083 | ||
3084 | CORE_ADDR | |
714835d5 | 3085 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3086 | { |
714835d5 UW |
3087 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3088 | { | |
714835d5 | 3089 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3090 | |
fd361982 AM |
3091 | return (pc + bfd_section_vma (bfd_section) |
3092 | - bfd_section_lma (bfd_section)); | |
714835d5 | 3093 | } |
c906108c SS |
3094 | |
3095 | return pc; | |
3096 | } | |
3097 | ||
5417f6dc | 3098 | /* Function: symbol_overlayed_address |
c906108c SS |
3099 | Return one of two addresses (relative to the VMA or to the LMA), |
3100 | depending on whether the section is mapped or not. */ | |
3101 | ||
c5aa993b | 3102 | CORE_ADDR |
714835d5 | 3103 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3104 | { |
3105 | if (overlay_debugging) | |
3106 | { | |
c378eb4e | 3107 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3108 | if (section == 0) |
3109 | return address; | |
c378eb4e MS |
3110 | /* If the symbol's section is not an overlay, just return its |
3111 | address. */ | |
c906108c SS |
3112 | if (!section_is_overlay (section)) |
3113 | return address; | |
c378eb4e | 3114 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3115 | if (section_is_mapped (section)) |
3116 | return address; | |
3117 | /* | |
3118 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3119 | * then return its LOADED address rather than its vma address!! | |
3120 | */ | |
3121 | return overlay_unmapped_address (address, section); | |
3122 | } | |
3123 | return address; | |
3124 | } | |
3125 | ||
5417f6dc | 3126 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3127 | Return the best-match overlay section for PC: |
3128 | If PC matches a mapped overlay section's VMA, return that section. | |
3129 | Else if PC matches an unmapped section's VMA, return that section. | |
3130 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3131 | ||
714835d5 | 3132 | struct obj_section * |
fba45db2 | 3133 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3134 | { |
c906108c SS |
3135 | struct obj_section *osect, *best_match = NULL; |
3136 | ||
3137 | if (overlay_debugging) | |
b631e59b | 3138 | { |
2030c079 | 3139 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3140 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3141 | if (section_is_overlay (osect)) | |
3142 | { | |
3143 | if (pc_in_mapped_range (pc, osect)) | |
3144 | { | |
3145 | if (section_is_mapped (osect)) | |
3146 | return osect; | |
3147 | else | |
3148 | best_match = osect; | |
3149 | } | |
3150 | else if (pc_in_unmapped_range (pc, osect)) | |
3151 | best_match = osect; | |
3152 | } | |
b631e59b | 3153 | } |
714835d5 | 3154 | return best_match; |
c906108c SS |
3155 | } |
3156 | ||
3157 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3158 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3159 | currently marked as MAPPED, return that section. Else return NULL. */ |
3160 | ||
714835d5 | 3161 | struct obj_section * |
fba45db2 | 3162 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3163 | { |
c906108c SS |
3164 | struct obj_section *osect; |
3165 | ||
3166 | if (overlay_debugging) | |
b631e59b | 3167 | { |
2030c079 | 3168 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3169 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3170 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3171 | return osect; | |
b631e59b | 3172 | } |
c906108c SS |
3173 | |
3174 | return NULL; | |
3175 | } | |
3176 | ||
3177 | /* Function: list_overlays_command | |
c378eb4e | 3178 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3179 | |
5d3055ad | 3180 | static void |
2cf311eb | 3181 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3182 | { |
c5aa993b | 3183 | int nmapped = 0; |
c906108c SS |
3184 | struct obj_section *osect; |
3185 | ||
3186 | if (overlay_debugging) | |
b631e59b | 3187 | { |
2030c079 | 3188 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3189 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3190 | if (section_is_mapped (osect)) | |
3191 | { | |
08feed99 | 3192 | struct gdbarch *gdbarch = objfile->arch (); |
3b9d3ac2 TT |
3193 | const char *name; |
3194 | bfd_vma lma, vma; | |
3195 | int size; | |
3196 | ||
fd361982 AM |
3197 | vma = bfd_section_vma (osect->the_bfd_section); |
3198 | lma = bfd_section_lma (osect->the_bfd_section); | |
3199 | size = bfd_section_size (osect->the_bfd_section); | |
3200 | name = bfd_section_name (osect->the_bfd_section); | |
3b9d3ac2 | 3201 | |
6cb06a8c | 3202 | gdb_printf ("Section %s, loaded at ", name); |
0426ad51 TT |
3203 | gdb_puts (paddress (gdbarch, lma)); |
3204 | gdb_puts (" - "); | |
3205 | gdb_puts (paddress (gdbarch, lma + size)); | |
6cb06a8c | 3206 | gdb_printf (", mapped at "); |
0426ad51 TT |
3207 | gdb_puts (paddress (gdbarch, vma)); |
3208 | gdb_puts (" - "); | |
3209 | gdb_puts (paddress (gdbarch, vma + size)); | |
3210 | gdb_puts ("\n"); | |
3b9d3ac2 TT |
3211 | |
3212 | nmapped++; | |
3213 | } | |
b631e59b | 3214 | } |
c906108c | 3215 | if (nmapped == 0) |
6cb06a8c | 3216 | gdb_printf (_("No sections are mapped.\n")); |
c906108c SS |
3217 | } |
3218 | ||
3219 | /* Function: map_overlay_command | |
3220 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3221 | ||
5d3055ad | 3222 | static void |
2cf311eb | 3223 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3224 | { |
c5aa993b | 3225 | struct obj_section *sec, *sec2; |
c906108c SS |
3226 | |
3227 | if (!overlay_debugging) | |
3e43a32a MS |
3228 | error (_("Overlay debugging not enabled. Use " |
3229 | "either the 'overlay auto' or\n" | |
3230 | "the 'overlay manual' command.")); | |
c906108c SS |
3231 | |
3232 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3233 | error (_("Argument required: name of an overlay section")); |
c906108c | 3234 | |
c378eb4e | 3235 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3236 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 | 3237 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
fd361982 | 3238 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
c5aa993b | 3239 | { |
3b9d3ac2 TT |
3240 | /* Now, check to see if the section is an overlay. */ |
3241 | if (!section_is_overlay (sec)) | |
3242 | continue; /* not an overlay section */ | |
3243 | ||
3244 | /* Mark the overlay as "mapped". */ | |
3245 | sec->ovly_mapped = 1; | |
3246 | ||
3247 | /* Next, make a pass and unmap any sections that are | |
3248 | overlapped by this new section: */ | |
2030c079 | 3249 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3250 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3251 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3252 | sec2)) | |
3253 | { | |
3254 | if (info_verbose) | |
6cb06a8c TT |
3255 | gdb_printf (_("Note: section %s unmapped by overlap\n"), |
3256 | bfd_section_name (sec2->the_bfd_section)); | |
3b9d3ac2 TT |
3257 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
3258 | } | |
3259 | return; | |
c5aa993b | 3260 | } |
8a3fe4f8 | 3261 | error (_("No overlay section called %s"), args); |
c906108c SS |
3262 | } |
3263 | ||
3264 | /* Function: unmap_overlay_command | |
5417f6dc | 3265 | Mark the overlay section as unmapped |
c906108c SS |
3266 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3267 | ||
5d3055ad | 3268 | static void |
2cf311eb | 3269 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3270 | { |
7a270e0c | 3271 | struct obj_section *sec = NULL; |
c906108c SS |
3272 | |
3273 | if (!overlay_debugging) | |
3e43a32a MS |
3274 | error (_("Overlay debugging not enabled. " |
3275 | "Use either the 'overlay auto' or\n" | |
3276 | "the 'overlay manual' command.")); | |
c906108c SS |
3277 | |
3278 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3279 | error (_("Argument required: name of an overlay section")); |
c906108c | 3280 | |
c378eb4e | 3281 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3282 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 | 3283 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
fd361982 | 3284 | if (!strcmp (bfd_section_name (sec->the_bfd_section), args)) |
3b9d3ac2 TT |
3285 | { |
3286 | if (!sec->ovly_mapped) | |
3287 | error (_("Section %s is not mapped"), args); | |
3288 | sec->ovly_mapped = 0; | |
3289 | return; | |
3290 | } | |
8a3fe4f8 | 3291 | error (_("No overlay section called %s"), args); |
c906108c SS |
3292 | } |
3293 | ||
3294 | /* Function: overlay_auto_command | |
3295 | A utility command to turn on overlay debugging. | |
c378eb4e | 3296 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3297 | |
3298 | static void | |
2cf311eb | 3299 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3300 | { |
d874f1e2 | 3301 | overlay_debugging = ovly_auto; |
1900040c | 3302 | enable_overlay_breakpoints (); |
c906108c | 3303 | if (info_verbose) |
6cb06a8c | 3304 | gdb_printf (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3305 | } |
3306 | ||
3307 | /* Function: overlay_manual_command | |
3308 | A utility command to turn on overlay debugging. | |
c378eb4e | 3309 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3310 | |
3311 | static void | |
2cf311eb | 3312 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3313 | { |
d874f1e2 | 3314 | overlay_debugging = ovly_on; |
1900040c | 3315 | disable_overlay_breakpoints (); |
c906108c | 3316 | if (info_verbose) |
6cb06a8c | 3317 | gdb_printf (_("Overlay debugging enabled.")); |
c906108c SS |
3318 | } |
3319 | ||
3320 | /* Function: overlay_off_command | |
3321 | A utility command to turn on overlay debugging. | |
c378eb4e | 3322 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3323 | |
3324 | static void | |
2cf311eb | 3325 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3326 | { |
d874f1e2 | 3327 | overlay_debugging = ovly_off; |
1900040c | 3328 | disable_overlay_breakpoints (); |
c906108c | 3329 | if (info_verbose) |
6cb06a8c | 3330 | gdb_printf (_("Overlay debugging disabled.")); |
c906108c SS |
3331 | } |
3332 | ||
3333 | static void | |
2cf311eb | 3334 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3335 | { |
e17c207e UW |
3336 | struct gdbarch *gdbarch = get_current_arch (); |
3337 | ||
3338 | if (gdbarch_overlay_update_p (gdbarch)) | |
3339 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3340 | else |
8a3fe4f8 | 3341 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3342 | } |
3343 | ||
c378eb4e | 3344 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3345 | static struct cmd_list_element *overlaylist; |
c906108c | 3346 | |
c906108c SS |
3347 | /* Target Overlays for the "Simplest" overlay manager: |
3348 | ||
5417f6dc RM |
3349 | This is GDB's default target overlay layer. It works with the |
3350 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3351 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3352 | so targets that use a different runtime overlay manager can |
c906108c SS |
3353 | substitute their own overlay_update function and take over the |
3354 | function pointer. | |
3355 | ||
3356 | The overlay_update function pokes around in the target's data structures | |
3357 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3358 | this information. | |
3359 | ||
3360 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3361 | unsigned _novlys; /# number of overlay sections #/ |
3362 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3363 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3364 | {..., ..., ..., ...}, |
3365 | } | |
3366 | unsigned _novly_regions; /# number of overlay regions #/ | |
3367 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3368 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3369 | {..., ..., ...}, |
3370 | } | |
c906108c SS |
3371 | These functions will attempt to update GDB's mappedness state in the |
3372 | symbol section table, based on the target's mappedness state. | |
3373 | ||
3374 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3375 | attempt to detect when the cached copy is invalidated. The main | |
3376 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3377 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3378 | the target (whenever possible). */ |
c906108c SS |
3379 | |
3380 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3381 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3382 | static unsigned cache_novlys = 0; |
c906108c | 3383 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3384 | enum ovly_index |
3385 | { | |
438e1e42 | 3386 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3387 | }; |
c906108c | 3388 | |
c378eb4e | 3389 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3390 | |
c906108c | 3391 | static void |
fba45db2 | 3392 | simple_free_overlay_table (void) |
c906108c | 3393 | { |
84d53fa9 | 3394 | xfree (cache_ovly_table); |
c5aa993b | 3395 | cache_novlys = 0; |
c906108c SS |
3396 | cache_ovly_table = NULL; |
3397 | cache_ovly_table_base = 0; | |
3398 | } | |
3399 | ||
9216df95 | 3400 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3401 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3402 | |
c906108c | 3403 | static void |
9216df95 | 3404 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3405 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3406 | { |
c378eb4e | 3407 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3408 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3409 | int i; |
c906108c | 3410 | |
9216df95 | 3411 | read_memory (memaddr, buf, len * size); |
c906108c | 3412 | for (i = 0; i < len; i++) |
e17a4113 | 3413 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3414 | } |
3415 | ||
3416 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3417 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3418 | |
c5aa993b | 3419 | static int |
fba45db2 | 3420 | simple_read_overlay_table (void) |
c906108c | 3421 | { |
3b7344d5 | 3422 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3423 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3424 | struct gdbarch *gdbarch; |
3425 | int word_size; | |
e17a4113 | 3426 | enum bfd_endian byte_order; |
c906108c SS |
3427 | |
3428 | simple_free_overlay_table (); | |
9b27852e | 3429 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3430 | if (! novlys_msym.minsym) |
c906108c | 3431 | { |
8a3fe4f8 | 3432 | error (_("Error reading inferior's overlay table: " |
dda83cd7 SM |
3433 | "couldn't find `_novlys' variable\n" |
3434 | "in inferior. Use `overlay manual' mode.")); | |
0d43edd1 | 3435 | return 0; |
c906108c | 3436 | } |
0d43edd1 | 3437 | |
7c7b6655 TT |
3438 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3439 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3440 | { |
8a3fe4f8 | 3441 | error (_("Error reading inferior's overlay table: couldn't find " |
dda83cd7 SM |
3442 | "`_ovly_table' array\n" |
3443 | "in inferior. Use `overlay manual' mode.")); | |
0d43edd1 JB |
3444 | return 0; |
3445 | } | |
3446 | ||
08feed99 | 3447 | gdbarch = ovly_table_msym.objfile->arch (); |
9216df95 | 3448 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3449 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3450 | |
4aeddc50 | 3451 | cache_novlys = read_memory_integer (novlys_msym.value_address (), |
77e371c0 | 3452 | 4, byte_order); |
0d43edd1 | 3453 | cache_ovly_table |
224c3ddb | 3454 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
4aeddc50 | 3455 | cache_ovly_table_base = ovly_table_msym.value_address (); |
0d43edd1 | 3456 | read_target_long_array (cache_ovly_table_base, |
dda83cd7 SM |
3457 | (unsigned int *) cache_ovly_table, |
3458 | cache_novlys * 4, word_size, byte_order); | |
0d43edd1 | 3459 | |
c5aa993b | 3460 | return 1; /* SUCCESS */ |
c906108c SS |
3461 | } |
3462 | ||
5417f6dc | 3463 | /* Function: simple_overlay_update_1 |
c906108c SS |
3464 | A helper function for simple_overlay_update. Assuming a cached copy |
3465 | of _ovly_table exists, look through it to find an entry whose vma, | |
3466 | lma and size match those of OSECT. Re-read the entry and make sure | |
3467 | it still matches OSECT (else the table may no longer be valid). | |
3468 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3469 | success, 0 for failure. */ | |
3470 | ||
3471 | static int | |
fba45db2 | 3472 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3473 | { |
764c99c1 | 3474 | int i; |
fbd35540 | 3475 | asection *bsect = osect->the_bfd_section; |
08feed99 | 3476 | struct gdbarch *gdbarch = osect->objfile->arch (); |
9216df95 | 3477 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3478 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3479 | |
c906108c | 3480 | for (i = 0; i < cache_novlys; i++) |
fd361982 AM |
3481 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3482 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c | 3483 | { |
9216df95 UW |
3484 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3485 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3486 | 4, word_size, byte_order); |
fd361982 AM |
3487 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3488 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
c906108c SS |
3489 | { |
3490 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3491 | return 1; | |
3492 | } | |
c378eb4e | 3493 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3494 | return 0; |
3495 | } | |
3496 | return 0; | |
3497 | } | |
3498 | ||
3499 | /* Function: simple_overlay_update | |
5417f6dc RM |
3500 | If OSECT is NULL, then update all sections' mapped state |
3501 | (after re-reading the entire target _ovly_table). | |
3502 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3503 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3504 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3505 | re-read the entire cache, and go ahead and update all sections. */ |
3506 | ||
1c772458 | 3507 | void |
fba45db2 | 3508 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3509 | { |
c378eb4e | 3510 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3511 | if (osect) |
c378eb4e | 3512 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3513 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3514 | { |
3515 | /* Does its cached location match what's currently in the | |
3516 | symtab? */ | |
3b7344d5 | 3517 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3518 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3519 | ||
3b7344d5 | 3520 | if (minsym.minsym == NULL) |
9cc89665 MS |
3521 | error (_("Error reading inferior's overlay table: couldn't " |
3522 | "find `_ovly_table' array\n" | |
3523 | "in inferior. Use `overlay manual' mode.")); | |
3524 | ||
4aeddc50 | 3525 | if (cache_ovly_table_base == minsym.value_address ()) |
9cc89665 MS |
3526 | /* Then go ahead and try to look up this single section in |
3527 | the cache. */ | |
3528 | if (simple_overlay_update_1 (osect)) | |
3529 | /* Found it! We're done. */ | |
3530 | return; | |
3531 | } | |
c906108c SS |
3532 | |
3533 | /* Cached table no good: need to read the entire table anew. | |
3534 | Or else we want all the sections, in which case it's actually | |
3535 | more efficient to read the whole table in one block anyway. */ | |
3536 | ||
0d43edd1 JB |
3537 | if (! simple_read_overlay_table ()) |
3538 | return; | |
3539 | ||
c378eb4e | 3540 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3541 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3542 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3543 | if (section_is_overlay (osect)) | |
3544 | { | |
3545 | int i; | |
3546 | asection *bsect = osect->the_bfd_section; | |
3547 | ||
3548 | for (i = 0; i < cache_novlys; i++) | |
fd361982 AM |
3549 | if (cache_ovly_table[i][VMA] == bfd_section_vma (bsect) |
3550 | && cache_ovly_table[i][LMA] == bfd_section_lma (bsect)) | |
3b9d3ac2 TT |
3551 | { /* obj_section matches i'th entry in ovly_table. */ |
3552 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3553 | break; /* finished with inner for loop: break out. */ | |
3554 | } | |
3555 | } | |
c906108c SS |
3556 | } |
3557 | ||
ac8035ab TG |
3558 | /* Default implementation for sym_relocate. */ |
3559 | ||
ac8035ab TG |
3560 | bfd_byte * |
3561 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
dda83cd7 | 3562 | bfd_byte *buf) |
ac8035ab | 3563 | { |
3019eac3 DE |
3564 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3565 | DWO file. */ | |
3566 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3567 | |
3568 | /* We're only interested in sections with relocation | |
3569 | information. */ | |
3570 | if ((sectp->flags & SEC_RELOC) == 0) | |
3571 | return NULL; | |
3572 | ||
3573 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3574 | all sections begin at 0. */ | |
ad7277da TT |
3575 | for (asection *sect : gdb_bfd_sections (abfd)) |
3576 | { | |
3577 | sect->output_section = sect; | |
3578 | sect->output_offset = 0; | |
3579 | } | |
ac8035ab TG |
3580 | |
3581 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3582 | } | |
3583 | ||
086df311 DJ |
3584 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3585 | contents are stored in BUF if it is non-NULL, or returned in a | |
3586 | malloc'd buffer otherwise. | |
3587 | ||
3588 | For some platforms and debug info formats, shared libraries contain | |
3589 | relocations against the debug sections (particularly for DWARF-2; | |
3590 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3591 | the version of the linker in use). Also, ELF object files naturally | |
3592 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3593 | the relocations in order to get the locations of symbols correct. |
3594 | Another example that may require relocation processing, is the | |
3595 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3596 | debug section. */ | |
086df311 DJ |
3597 | |
3598 | bfd_byte * | |
ac8035ab | 3599 | symfile_relocate_debug_section (struct objfile *objfile, |
dda83cd7 | 3600 | asection *sectp, bfd_byte *buf) |
086df311 | 3601 | { |
ac8035ab | 3602 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3603 | |
ac8035ab | 3604 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3605 | } |
c906108c | 3606 | |
62982abd | 3607 | symfile_segment_data_up |
31d99776 DJ |
3608 | get_symfile_segment_data (bfd *abfd) |
3609 | { | |
00b5771c | 3610 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3611 | |
3612 | if (sf == NULL) | |
3613 | return NULL; | |
3614 | ||
3615 | return sf->sym_segments (abfd); | |
3616 | } | |
3617 | ||
28c32713 JB |
3618 | /* Given: |
3619 | - DATA, containing segment addresses from the object file ABFD, and | |
3620 | the mapping from ABFD's sections onto the segments that own them, | |
3621 | and | |
3622 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3623 | segment addresses reported by the target, | |
3624 | store the appropriate offsets for each section in OFFSETS. | |
3625 | ||
3626 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3627 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3628 | ||
8d385431 DJ |
3629 | If there are more entries, then ignore the extra. The target may |
3630 | not be able to distinguish between an empty data segment and a | |
3631 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3632 | |
31d99776 | 3633 | int |
3189cb12 DE |
3634 | symfile_map_offsets_to_segments (bfd *abfd, |
3635 | const struct symfile_segment_data *data, | |
6a053cb1 | 3636 | section_offsets &offsets, |
31d99776 DJ |
3637 | int num_segment_bases, |
3638 | const CORE_ADDR *segment_bases) | |
3639 | { | |
3640 | int i; | |
3641 | asection *sect; | |
3642 | ||
28c32713 JB |
3643 | /* It doesn't make sense to call this function unless you have some |
3644 | segment base addresses. */ | |
202b96c1 | 3645 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3646 | |
31d99776 DJ |
3647 | /* If we do not have segment mappings for the object file, we |
3648 | can not relocate it by segments. */ | |
3649 | gdb_assert (data != NULL); | |
68b888ff | 3650 | gdb_assert (data->segments.size () > 0); |
31d99776 | 3651 | |
31d99776 DJ |
3652 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3653 | { | |
31d99776 DJ |
3654 | int which = data->segment_info[i]; |
3655 | ||
68b888ff | 3656 | gdb_assert (0 <= which && which <= data->segments.size ()); |
28c32713 JB |
3657 | |
3658 | /* Don't bother computing offsets for sections that aren't | |
dda83cd7 | 3659 | loaded as part of any segment. */ |
28c32713 | 3660 | if (! which) |
dda83cd7 | 3661 | continue; |
28c32713 JB |
3662 | |
3663 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
dda83cd7 | 3664 | segments mentioned in DATA->segment_info. */ |
31d99776 | 3665 | if (which > num_segment_bases) |
dda83cd7 | 3666 | which = num_segment_bases; |
31d99776 | 3667 | |
68b888ff | 3668 | offsets[i] = segment_bases[which - 1] - data->segments[which - 1].base; |
31d99776 DJ |
3669 | } |
3670 | ||
3671 | return 1; | |
3672 | } | |
3673 | ||
3674 | static void | |
3675 | symfile_find_segment_sections (struct objfile *objfile) | |
3676 | { | |
98badbfd | 3677 | bfd *abfd = objfile->obfd.get (); |
31d99776 DJ |
3678 | int i; |
3679 | asection *sect; | |
31d99776 | 3680 | |
98badbfd | 3681 | symfile_segment_data_up data = get_symfile_segment_data (abfd); |
31d99776 DJ |
3682 | if (data == NULL) |
3683 | return; | |
3684 | ||
68b888ff | 3685 | if (data->segments.size () != 1 && data->segments.size () != 2) |
62982abd | 3686 | return; |
31d99776 DJ |
3687 | |
3688 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3689 | { | |
31d99776 DJ |
3690 | int which = data->segment_info[i]; |
3691 | ||
3692 | if (which == 1) | |
3693 | { | |
3694 | if (objfile->sect_index_text == -1) | |
3695 | objfile->sect_index_text = sect->index; | |
3696 | ||
3697 | if (objfile->sect_index_rodata == -1) | |
3698 | objfile->sect_index_rodata = sect->index; | |
3699 | } | |
3700 | else if (which == 2) | |
3701 | { | |
3702 | if (objfile->sect_index_data == -1) | |
3703 | objfile->sect_index_data = sect->index; | |
3704 | ||
3705 | if (objfile->sect_index_bss == -1) | |
3706 | objfile->sect_index_bss = sect->index; | |
3707 | } | |
3708 | } | |
31d99776 DJ |
3709 | } |
3710 | ||
76ad5e1e NB |
3711 | /* Listen for free_objfile events. */ |
3712 | ||
3713 | static void | |
3714 | symfile_free_objfile (struct objfile *objfile) | |
3715 | { | |
c33b2f12 MM |
3716 | /* Remove the target sections owned by this objfile. */ |
3717 | if (objfile != NULL) | |
2a3f84af | 3718 | current_program_space->remove_target_sections ((void *) objfile); |
76ad5e1e NB |
3719 | } |
3720 | ||
540c2971 DE |
3721 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3722 | Expand all symtabs that match the specified criteria. | |
3723 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3724 | ||
df35e626 | 3725 | bool |
14bc53a8 PA |
3726 | expand_symtabs_matching |
3727 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3728 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3729 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3730 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
03a8ea51 | 3731 | block_search_flags search_flags, |
14bc53a8 | 3732 | enum search_domain kind) |
540c2971 | 3733 | { |
2030c079 | 3734 | for (objfile *objfile : current_program_space->objfiles ()) |
df35e626 TT |
3735 | if (!objfile->expand_symtabs_matching (file_matcher, |
3736 | &lookup_name, | |
3737 | symbol_matcher, | |
03a8ea51 TT |
3738 | expansion_notify, |
3739 | search_flags, | |
3bfa51a7 | 3740 | UNDEF_DOMAIN, |
03a8ea51 | 3741 | kind)) |
df35e626 TT |
3742 | return false; |
3743 | return true; | |
540c2971 DE |
3744 | } |
3745 | ||
3746 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3747 | Map function FUN over every file. | |
3748 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3749 | ||
3750 | void | |
f4655dee TT |
3751 | map_symbol_filenames (gdb::function_view<symbol_filename_ftype> fun, |
3752 | bool need_fullname) | |
540c2971 | 3753 | { |
2030c079 | 3754 | for (objfile *objfile : current_program_space->objfiles ()) |
f4655dee | 3755 | objfile->map_symbol_filenames (fun, need_fullname); |
540c2971 DE |
3756 | } |
3757 | ||
32fa66eb SM |
3758 | #if GDB_SELF_TEST |
3759 | ||
3760 | namespace selftests { | |
3761 | namespace filename_language { | |
3762 | ||
32fa66eb SM |
3763 | static void test_filename_language () |
3764 | { | |
3765 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3766 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3767 | |
3768 | /* Test deducing an unknown extension. */ | |
3769 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3770 | SELF_CHECK (lang == language_unknown); | |
3771 | ||
3772 | /* Test deducing a known extension. */ | |
3773 | lang = deduce_language_from_filename ("myfile.c"); | |
3774 | SELF_CHECK (lang == language_c); | |
3775 | ||
3776 | /* Test adding a new extension using the internal API. */ | |
3777 | add_filename_language (".blah", language_pascal); | |
3778 | lang = deduce_language_from_filename ("myfile.blah"); | |
3779 | SELF_CHECK (lang == language_pascal); | |
3780 | } | |
3781 | ||
3782 | static void | |
3783 | test_set_ext_lang_command () | |
3784 | { | |
3785 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3786 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3787 | |
3788 | /* Confirm that the .hello extension is not known. */ | |
3789 | language lang = deduce_language_from_filename ("cake.hello"); | |
3790 | SELF_CHECK (lang == language_unknown); | |
3791 | ||
3792 | /* Test adding a new extension using the CLI command. */ | |
e0700ba4 | 3793 | ext_args = ".hello rust"; |
32fa66eb SM |
3794 | set_ext_lang_command (NULL, 1, NULL); |
3795 | ||
3796 | lang = deduce_language_from_filename ("cake.hello"); | |
3797 | SELF_CHECK (lang == language_rust); | |
3798 | ||
3799 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3800 | int size_before = filename_language_table.size (); |
e0700ba4 | 3801 | ext_args = ".hello pascal"; |
32fa66eb | 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 | |
c90e7d63 | 3821 | gdb::observers::free_objfile.attach (symfile_free_objfile, "symfile"); |
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 | |
3947f654 SM |
3870 | cmd_list_element *overlay_cmd |
3871 | = add_basic_prefix_cmd ("overlay", class_support, | |
3872 | _("Commands for debugging overlays."), &overlaylist, | |
3873 | 0, &cmdlist); | |
c906108c | 3874 | |
3947f654 SM |
3875 | add_com_alias ("ovly", overlay_cmd, class_support, 1); |
3876 | add_com_alias ("ov", overlay_cmd, class_support, 1); | |
c906108c | 3877 | |
c5aa993b | 3878 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3879 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3880 | |
c5aa993b | 3881 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3882 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3883 | |
c5aa993b | 3884 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3885 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3886 | |
c5aa993b | 3887 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3888 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3889 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3890 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3891 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3892 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3893 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3894 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3895 | |
3896 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3897 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3898 | &ext_args, _("\ | |
3899 | Set mapping between filename extension and source language."), _("\ | |
3900 | Show mapping between filename extension and source language."), _("\ | |
3901 | Usage: set extension-language .foo bar"), | |
3902 | set_ext_lang_command, | |
920d2a44 | 3903 | show_ext_args, |
26c41df3 | 3904 | &setlist, &showlist); |
c906108c | 3905 | |
c5aa993b | 3906 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3907 | _("All filename extensions associated with a source language.")); |
917317f4 | 3908 | |
525226b5 AC |
3909 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3910 | &debug_file_directory, _("\ | |
24ddea62 JK |
3911 | Set the directories where separate debug symbols are searched for."), _("\ |
3912 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3913 | Separate debug symbols are first searched for in the same\n\ |
3914 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3915 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3916 | each global debug-file-directory component prepended."), |
525226b5 | 3917 | NULL, |
920d2a44 | 3918 | show_debug_file_directory, |
525226b5 | 3919 | &setlist, &showlist); |
770e7fc7 DE |
3920 | |
3921 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3922 | print_symbol_loading_enums, &print_symbol_loading, | |
3923 | _("\ | |
3924 | Set printing of symbol loading messages."), _("\ | |
3925 | Show printing of symbol loading messages."), _("\ | |
3926 | off == turn all messages off\n\ | |
3927 | brief == print messages for the executable,\n\ | |
dda83cd7 | 3928 | and brief messages for shared libraries\n\ |
770e7fc7 | 3929 | full == print messages for the executable,\n\ |
dda83cd7 | 3930 | and messages for each shared library."), |
770e7fc7 DE |
3931 | NULL, |
3932 | NULL, | |
3933 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3934 | |
3935 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3936 | &separate_debug_file_debug, _("\ | |
3937 | Set printing of separate debug info file search debug."), _("\ | |
3938 | Show printing of separate debug info file search debug."), _("\ | |
3939 | When on, GDB prints the searched locations while looking for separate debug \ | |
3940 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
3941 | |
3942 | #if GDB_SELF_TEST | |
3943 | selftests::register_test | |
3944 | ("filename_language", selftests::filename_language::test_filename_language); | |
3945 | selftests::register_test | |
3946 | ("set_ext_lang_command", | |
3947 | selftests::filename_language::test_set_ext_lang_command); | |
3948 | #endif | |
c906108c | 3949 | } |