Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
fe898f56 | 48 | #include "block.h" |
76727919 | 49 | #include "observable.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
268a13a5 TT |
59 | #include "gdbsupport/byte-vector.h" |
60 | #include "gdbsupport/pathstuff.h" | |
61 | #include "gdbsupport/selftest.h" | |
47fd17cd | 62 | #include "cli/cli-style.h" |
268a13a5 | 63 | #include "gdbsupport/forward-scope-exit.h" |
c906108c | 64 | |
c906108c SS |
65 | #include <sys/types.h> |
66 | #include <fcntl.h> | |
53ce3c39 | 67 | #include <sys/stat.h> |
c906108c | 68 | #include <ctype.h> |
dcb07cfa | 69 | #include <chrono> |
37e136b1 | 70 | #include <algorithm> |
c906108c | 71 | |
ccefe4c4 | 72 | #include "psymtab.h" |
c906108c | 73 | |
3e43a32a MS |
74 | int (*deprecated_ui_load_progress_hook) (const char *section, |
75 | unsigned long num); | |
9a4105ab | 76 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
77 | unsigned long section_sent, |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
c2d11a7d | 80 | unsigned long total_size); |
769d7dc4 AC |
81 | void (*deprecated_pre_add_symbol_hook) (const char *); |
82 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 83 | |
286526c1 TT |
84 | using clear_symtab_users_cleanup |
85 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 86 | |
c378eb4e MS |
87 | /* Global variables owned by this file. */ |
88 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 89 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 90 | |
c378eb4e | 91 | /* Functions this file defines. */ |
c906108c | 92 | |
ecf45d2c | 93 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 94 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 95 | |
00b5771c | 96 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 97 | |
a14ed312 | 98 | static void overlay_invalidate_all (void); |
c906108c | 99 | |
a14ed312 | 100 | static void simple_free_overlay_table (void); |
c906108c | 101 | |
e17a4113 UW |
102 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
103 | enum bfd_endian); | |
c906108c | 104 | |
a14ed312 | 105 | static int simple_read_overlay_table (void); |
c906108c | 106 | |
a14ed312 | 107 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 108 | |
31d99776 DJ |
109 | static void symfile_find_segment_sections (struct objfile *objfile); |
110 | ||
c906108c SS |
111 | /* List of all available sym_fns. On gdb startup, each object file reader |
112 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 113 | prepared to read. */ |
c906108c | 114 | |
905014d7 | 115 | struct registered_sym_fns |
c256e171 | 116 | { |
905014d7 SM |
117 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
118 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
119 | {} | |
120 | ||
c256e171 DE |
121 | /* BFD flavour that we handle. */ |
122 | enum bfd_flavour sym_flavour; | |
123 | ||
124 | /* The "vtable" of symbol functions. */ | |
125 | const struct sym_fns *sym_fns; | |
905014d7 | 126 | }; |
c256e171 | 127 | |
905014d7 | 128 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 129 | |
770e7fc7 DE |
130 | /* Values for "set print symbol-loading". */ |
131 | ||
132 | const char print_symbol_loading_off[] = "off"; | |
133 | const char print_symbol_loading_brief[] = "brief"; | |
134 | const char print_symbol_loading_full[] = "full"; | |
135 | static const char *print_symbol_loading_enums[] = | |
136 | { | |
137 | print_symbol_loading_off, | |
138 | print_symbol_loading_brief, | |
139 | print_symbol_loading_full, | |
140 | NULL | |
141 | }; | |
142 | static const char *print_symbol_loading = print_symbol_loading_full; | |
143 | ||
b7209cb4 FF |
144 | /* If non-zero, shared library symbols will be added automatically |
145 | when the inferior is created, new libraries are loaded, or when | |
146 | attaching to the inferior. This is almost always what users will | |
147 | want to have happen; but for very large programs, the startup time | |
148 | will be excessive, and so if this is a problem, the user can clear | |
149 | this flag and then add the shared library symbols as needed. Note | |
150 | that there is a potential for confusion, since if the shared | |
c906108c | 151 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 152 | report all the functions that are actually present. */ |
c906108c SS |
153 | |
154 | int auto_solib_add = 1; | |
c906108c | 155 | \f |
c5aa993b | 156 | |
770e7fc7 DE |
157 | /* Return non-zero if symbol-loading messages should be printed. |
158 | FROM_TTY is the standard from_tty argument to gdb commands. | |
159 | If EXEC is non-zero the messages are for the executable. | |
160 | Otherwise, messages are for shared libraries. | |
161 | If FULL is non-zero then the caller is printing a detailed message. | |
162 | E.g., the message includes the shared library name. | |
163 | Otherwise, the caller is printing a brief "summary" message. */ | |
164 | ||
165 | int | |
166 | print_symbol_loading_p (int from_tty, int exec, int full) | |
167 | { | |
168 | if (!from_tty && !info_verbose) | |
169 | return 0; | |
170 | ||
171 | if (exec) | |
172 | { | |
173 | /* We don't check FULL for executables, there are few such | |
174 | messages, therefore brief == full. */ | |
175 | return print_symbol_loading != print_symbol_loading_off; | |
176 | } | |
177 | if (full) | |
178 | return print_symbol_loading == print_symbol_loading_full; | |
179 | return print_symbol_loading == print_symbol_loading_brief; | |
180 | } | |
181 | ||
0d14a781 | 182 | /* True if we are reading a symbol table. */ |
c906108c SS |
183 | |
184 | int currently_reading_symtab = 0; | |
185 | ||
ccefe4c4 TT |
186 | /* Increment currently_reading_symtab and return a cleanup that can be |
187 | used to decrement it. */ | |
3b7bacac | 188 | |
c83dd867 | 189 | scoped_restore_tmpl<int> |
ccefe4c4 | 190 | increment_reading_symtab (void) |
c906108c | 191 | { |
c83dd867 TT |
192 | gdb_assert (currently_reading_symtab >= 0); |
193 | return make_scoped_restore (¤tly_reading_symtab, | |
194 | currently_reading_symtab + 1); | |
c906108c SS |
195 | } |
196 | ||
5417f6dc RM |
197 | /* Remember the lowest-addressed loadable section we've seen. |
198 | This function is called via bfd_map_over_sections. | |
c906108c SS |
199 | |
200 | In case of equal vmas, the section with the largest size becomes the | |
201 | lowest-addressed loadable section. | |
202 | ||
203 | If the vmas and sizes are equal, the last section is considered the | |
204 | lowest-addressed loadable section. */ | |
205 | ||
206 | void | |
4efb68b1 | 207 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 208 | { |
c5aa993b | 209 | asection **lowest = (asection **) obj; |
c906108c | 210 | |
eb73e134 | 211 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
212 | return; |
213 | if (!*lowest) | |
214 | *lowest = sect; /* First loadable section */ | |
215 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
216 | *lowest = sect; /* A lower loadable section */ | |
217 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
218 | && (bfd_section_size (abfd, (*lowest)) | |
219 | <= bfd_section_size (abfd, sect))) | |
220 | *lowest = sect; | |
221 | } | |
222 | ||
62557bbc | 223 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 224 | an existing section table. */ |
62557bbc | 225 | |
37e136b1 | 226 | section_addr_info |
0542c86d PA |
227 | build_section_addr_info_from_section_table (const struct target_section *start, |
228 | const struct target_section *end) | |
62557bbc | 229 | { |
0542c86d | 230 | const struct target_section *stp; |
62557bbc | 231 | |
37e136b1 | 232 | section_addr_info sap; |
62557bbc | 233 | |
37e136b1 | 234 | for (stp = start; stp != end; stp++) |
62557bbc | 235 | { |
2b2848e2 DE |
236 | struct bfd_section *asect = stp->the_bfd_section; |
237 | bfd *abfd = asect->owner; | |
238 | ||
239 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
37e136b1 TT |
240 | && sap.size () < end - start) |
241 | sap.emplace_back (stp->addr, | |
242 | bfd_section_name (abfd, asect), | |
243 | gdb_bfd_section_index (abfd, asect)); | |
62557bbc KB |
244 | } |
245 | ||
246 | return sap; | |
247 | } | |
248 | ||
82ccf5a5 | 249 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 250 | |
37e136b1 | 251 | static section_addr_info |
82ccf5a5 | 252 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 253 | { |
089b4803 TG |
254 | struct bfd_section *sec; |
255 | ||
37e136b1 TT |
256 | section_addr_info sap; |
257 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
82ccf5a5 | 258 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) |
37e136b1 TT |
259 | sap.emplace_back (bfd_get_section_vma (abfd, sec), |
260 | bfd_get_section_name (abfd, sec), | |
261 | gdb_bfd_section_index (abfd, sec)); | |
d76488d8 | 262 | |
089b4803 TG |
263 | return sap; |
264 | } | |
265 | ||
82ccf5a5 JK |
266 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
267 | ||
37e136b1 | 268 | section_addr_info |
82ccf5a5 JK |
269 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
270 | { | |
82ccf5a5 JK |
271 | int i; |
272 | ||
273 | /* Before reread_symbols gets rewritten it is not safe to call: | |
274 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
275 | */ | |
37e136b1 TT |
276 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
277 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 278 | { |
37e136b1 | 279 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 280 | |
37e136b1 | 281 | sap[i].addr += objfile->section_offsets->offsets[sectindex]; |
82ccf5a5 JK |
282 | } |
283 | return sap; | |
284 | } | |
62557bbc | 285 | |
e8289572 | 286 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 287 | |
e8289572 JB |
288 | static void |
289 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 290 | { |
e8289572 | 291 | asection *sect; |
c906108c | 292 | int i; |
5417f6dc | 293 | |
b8fbeb18 | 294 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 295 | if (sect) |
b8fbeb18 EZ |
296 | objfile->sect_index_text = sect->index; |
297 | ||
298 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 299 | if (sect) |
b8fbeb18 EZ |
300 | objfile->sect_index_data = sect->index; |
301 | ||
302 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 303 | if (sect) |
b8fbeb18 EZ |
304 | objfile->sect_index_bss = sect->index; |
305 | ||
306 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 307 | if (sect) |
b8fbeb18 EZ |
308 | objfile->sect_index_rodata = sect->index; |
309 | ||
bbcd32ad FF |
310 | /* This is where things get really weird... We MUST have valid |
311 | indices for the various sect_index_* members or gdb will abort. | |
312 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
313 | accomodate that. First, check for a file with the standard |
314 | one or two segments. */ | |
315 | ||
316 | symfile_find_segment_sections (objfile); | |
317 | ||
318 | /* Except when explicitly adding symbol files at some address, | |
319 | section_offsets contains nothing but zeros, so it doesn't matter | |
320 | which slot in section_offsets the individual sect_index_* members | |
321 | index into. So if they are all zero, it is safe to just point | |
322 | all the currently uninitialized indices to the first slot. But | |
323 | beware: if this is the main executable, it may be relocated | |
324 | later, e.g. by the remote qOffsets packet, and then this will | |
325 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
326 | |
327 | for (i = 0; i < objfile->num_sections; i++) | |
328 | { | |
329 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
330 | { | |
331 | break; | |
332 | } | |
333 | } | |
334 | if (i == objfile->num_sections) | |
335 | { | |
336 | if (objfile->sect_index_text == -1) | |
337 | objfile->sect_index_text = 0; | |
338 | if (objfile->sect_index_data == -1) | |
339 | objfile->sect_index_data = 0; | |
340 | if (objfile->sect_index_bss == -1) | |
341 | objfile->sect_index_bss = 0; | |
342 | if (objfile->sect_index_rodata == -1) | |
343 | objfile->sect_index_rodata = 0; | |
344 | } | |
b8fbeb18 | 345 | } |
c906108c | 346 | |
c1bd25fd DJ |
347 | /* The arguments to place_section. */ |
348 | ||
349 | struct place_section_arg | |
350 | { | |
351 | struct section_offsets *offsets; | |
352 | CORE_ADDR lowest; | |
353 | }; | |
354 | ||
355 | /* Find a unique offset to use for loadable section SECT if | |
356 | the user did not provide an offset. */ | |
357 | ||
2c0b251b | 358 | static void |
c1bd25fd DJ |
359 | place_section (bfd *abfd, asection *sect, void *obj) |
360 | { | |
19ba03f4 | 361 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
362 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
363 | int done; | |
3bd72c6f | 364 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 365 | |
2711e456 DJ |
366 | /* We are only interested in allocated sections. */ |
367 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
368 | return; |
369 | ||
370 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 371 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
372 | return; |
373 | ||
374 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
375 | start_addr = (arg->lowest + align - 1) & -align; |
376 | ||
c1bd25fd DJ |
377 | do { |
378 | asection *cur_sec; | |
c1bd25fd | 379 | |
c1bd25fd DJ |
380 | done = 1; |
381 | ||
382 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
383 | { | |
384 | int indx = cur_sec->index; | |
c1bd25fd DJ |
385 | |
386 | /* We don't need to compare against ourself. */ | |
387 | if (cur_sec == sect) | |
388 | continue; | |
389 | ||
2711e456 DJ |
390 | /* We can only conflict with allocated sections. */ |
391 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
392 | continue; |
393 | ||
394 | /* If the section offset is 0, either the section has not been placed | |
395 | yet, or it was the lowest section placed (in which case LOWEST | |
396 | will be past its end). */ | |
397 | if (offsets[indx] == 0) | |
398 | continue; | |
399 | ||
400 | /* If this section would overlap us, then we must move up. */ | |
401 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
402 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
403 | { | |
404 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
405 | start_addr = (start_addr + align - 1) & -align; | |
406 | done = 0; | |
3bd72c6f | 407 | break; |
c1bd25fd DJ |
408 | } |
409 | ||
410 | /* Otherwise, we appear to be OK. So far. */ | |
411 | } | |
412 | } | |
413 | while (!done); | |
414 | ||
65cf3563 | 415 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 416 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 417 | } |
e8289572 | 418 | |
4f7ae6f5 | 419 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
75242ef4 JK |
420 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS |
421 | entries. */ | |
e8289572 JB |
422 | |
423 | void | |
75242ef4 JK |
424 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
425 | int num_sections, | |
37e136b1 | 426 | const section_addr_info &addrs) |
e8289572 JB |
427 | { |
428 | int i; | |
429 | ||
75242ef4 | 430 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 431 | |
c378eb4e | 432 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 433 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 434 | { |
3189cb12 | 435 | const struct other_sections *osp; |
e8289572 | 436 | |
37e136b1 | 437 | osp = &addrs[i]; |
5488dafb | 438 | if (osp->sectindex == -1) |
e8289572 JB |
439 | continue; |
440 | ||
c378eb4e | 441 | /* Record all sections in offsets. */ |
e8289572 | 442 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 443 | the BFD index. */ |
75242ef4 JK |
444 | section_offsets->offsets[osp->sectindex] = osp->addr; |
445 | } | |
446 | } | |
447 | ||
1276c759 JK |
448 | /* Transform section name S for a name comparison. prelink can split section |
449 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
450 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
451 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
452 | (`.sbss') section has invalid (increased) virtual address. */ | |
453 | ||
454 | static const char * | |
455 | addr_section_name (const char *s) | |
456 | { | |
457 | if (strcmp (s, ".dynbss") == 0) | |
458 | return ".bss"; | |
459 | if (strcmp (s, ".sdynbss") == 0) | |
460 | return ".sbss"; | |
461 | ||
462 | return s; | |
463 | } | |
464 | ||
37e136b1 TT |
465 | /* std::sort comparator for addrs_section_sort. Sort entries in |
466 | ascending order by their (name, sectindex) pair. sectindex makes | |
467 | the sort by name stable. */ | |
82ccf5a5 | 468 | |
37e136b1 TT |
469 | static bool |
470 | addrs_section_compar (const struct other_sections *a, | |
471 | const struct other_sections *b) | |
82ccf5a5 | 472 | { |
22e048c9 | 473 | int retval; |
82ccf5a5 | 474 | |
37e136b1 TT |
475 | retval = strcmp (addr_section_name (a->name.c_str ()), |
476 | addr_section_name (b->name.c_str ())); | |
477 | if (retval != 0) | |
478 | return retval < 0; | |
82ccf5a5 | 479 | |
37e136b1 | 480 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
481 | } |
482 | ||
37e136b1 | 483 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 484 | |
37e136b1 TT |
485 | static std::vector<const struct other_sections *> |
486 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 487 | { |
82ccf5a5 JK |
488 | int i; |
489 | ||
37e136b1 TT |
490 | std::vector<const struct other_sections *> array (addrs.size ()); |
491 | for (i = 0; i < addrs.size (); i++) | |
492 | array[i] = &addrs[i]; | |
82ccf5a5 | 493 | |
37e136b1 | 494 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
495 | |
496 | return array; | |
497 | } | |
498 | ||
75242ef4 | 499 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
500 | also SECTINDEXes specific to ABFD there. This function can be used to |
501 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
502 | |
503 | void | |
37e136b1 | 504 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
505 | { |
506 | asection *lower_sect; | |
75242ef4 JK |
507 | CORE_ADDR lower_offset; |
508 | int i; | |
509 | ||
510 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
511 | continguous sections. */ |
512 | lower_sect = NULL; | |
513 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
514 | if (lower_sect == NULL) |
515 | { | |
516 | warning (_("no loadable sections found in added symbol-file %s"), | |
517 | bfd_get_filename (abfd)); | |
518 | lower_offset = 0; | |
e8289572 | 519 | } |
75242ef4 JK |
520 | else |
521 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
522 | ||
82ccf5a5 JK |
523 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
524 | in ABFD. Section names are not unique - there can be multiple sections of | |
525 | the same name. Also the sections of the same name do not have to be | |
526 | adjacent to each other. Some sections may be present only in one of the | |
527 | files. Even sections present in both files do not have to be in the same | |
528 | order. | |
529 | ||
530 | Use stable sort by name for the sections in both files. Then linearly | |
531 | scan both lists matching as most of the entries as possible. */ | |
532 | ||
37e136b1 TT |
533 | std::vector<const struct other_sections *> addrs_sorted |
534 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 535 | |
37e136b1 TT |
536 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
537 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
538 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 539 | |
c378eb4e MS |
540 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
541 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 542 | |
37e136b1 TT |
543 | std::vector<const struct other_sections *> |
544 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 545 | |
37e136b1 TT |
546 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
547 | = abfd_addrs_sorted.begin (); | |
52941706 | 548 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 549 | { |
37e136b1 | 550 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 551 | |
37e136b1 TT |
552 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
553 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 554 | sect_name) < 0) |
37e136b1 | 555 | abfd_sorted_iter++; |
82ccf5a5 | 556 | |
37e136b1 TT |
557 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
558 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 559 | sect_name) == 0) |
82ccf5a5 JK |
560 | { |
561 | int index_in_addrs; | |
562 | ||
563 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 564 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 565 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 566 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
567 | |
568 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 569 | abfd_sorted_iter++; |
82ccf5a5 | 570 | } |
82ccf5a5 JK |
571 | } |
572 | ||
75242ef4 JK |
573 | /* Calculate offsets for the loadable sections. |
574 | FIXME! Sections must be in order of increasing loadable section | |
575 | so that contiguous sections can use the lower-offset!!! | |
576 | ||
577 | Adjust offsets if the segments are not contiguous. | |
578 | If the section is contiguous, its offset should be set to | |
579 | the offset of the highest loadable section lower than it | |
580 | (the loadable section directly below it in memory). | |
581 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
582 | ||
37e136b1 | 583 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 584 | { |
37e136b1 | 585 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
586 | |
587 | if (sect) | |
75242ef4 | 588 | { |
c378eb4e | 589 | /* This is the index used by BFD. */ |
37e136b1 | 590 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 591 | |
37e136b1 | 592 | if ((*addrs)[i].addr != 0) |
75242ef4 | 593 | { |
37e136b1 TT |
594 | (*addrs)[i].addr -= sect->addr; |
595 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
596 | } |
597 | else | |
37e136b1 | 598 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
599 | } |
600 | else | |
672d9c23 | 601 | { |
1276c759 | 602 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 603 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 604 | |
b0fcb67f JK |
605 | /* This section does not exist in ABFD, which is normally |
606 | unexpected and we want to issue a warning. | |
607 | ||
4d9743af JK |
608 | However, the ELF prelinker does create a few sections which are |
609 | marked in the main executable as loadable (they are loaded in | |
610 | memory from the DYNAMIC segment) and yet are not present in | |
611 | separate debug info files. This is fine, and should not cause | |
612 | a warning. Shared libraries contain just the section | |
613 | ".gnu.liblist" but it is not marked as loadable there. There is | |
614 | no other way to identify them than by their name as the sections | |
1276c759 JK |
615 | created by prelink have no special flags. |
616 | ||
617 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 618 | |
37e136b1 TT |
619 | if (!(sect_name == ".gnu.liblist" |
620 | || sect_name == ".gnu.conflict" | |
621 | || (sect_name == ".bss" | |
1276c759 | 622 | && i > 0 |
37e136b1 | 623 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 624 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 625 | || (sect_name == ".sbss" |
1276c759 | 626 | && i > 0 |
37e136b1 | 627 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 628 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 629 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
630 | bfd_get_filename (abfd)); |
631 | ||
37e136b1 TT |
632 | (*addrs)[i].addr = 0; |
633 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 634 | } |
75242ef4 JK |
635 | } |
636 | } | |
637 | ||
638 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
639 | of how to represent it for fast symbol reading. This is the default | |
640 | version of the sym_fns.sym_offsets function for symbol readers that | |
641 | don't need to do anything special. It allocates a section_offsets table | |
642 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
643 | ||
644 | void | |
645 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 646 | const section_addr_info &addrs) |
75242ef4 | 647 | { |
d445b2f6 | 648 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
649 | objfile->section_offsets = (struct section_offsets *) |
650 | obstack_alloc (&objfile->objfile_obstack, | |
651 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
652 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
653 | objfile->num_sections, addrs); | |
e8289572 | 654 | |
c1bd25fd DJ |
655 | /* For relocatable files, all loadable sections will start at zero. |
656 | The zero is meaningless, so try to pick arbitrary addresses such | |
657 | that no loadable sections overlap. This algorithm is quadratic, | |
658 | but the number of sections in a single object file is generally | |
659 | small. */ | |
660 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
661 | { | |
662 | struct place_section_arg arg; | |
2711e456 DJ |
663 | bfd *abfd = objfile->obfd; |
664 | asection *cur_sec; | |
2711e456 DJ |
665 | |
666 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
667 | /* We do not expect this to happen; just skip this step if the | |
668 | relocatable file has a section with an assigned VMA. */ | |
669 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
670 | break; | |
671 | ||
672 | if (cur_sec == NULL) | |
673 | { | |
674 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
675 | ||
676 | /* Pick non-overlapping offsets for sections the user did not | |
677 | place explicitly. */ | |
678 | arg.offsets = objfile->section_offsets; | |
679 | arg.lowest = 0; | |
680 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
681 | ||
682 | /* Correctly filling in the section offsets is not quite | |
683 | enough. Relocatable files have two properties that | |
684 | (most) shared objects do not: | |
685 | ||
686 | - Their debug information will contain relocations. Some | |
687 | shared libraries do also, but many do not, so this can not | |
688 | be assumed. | |
689 | ||
690 | - If there are multiple code sections they will be loaded | |
691 | at different relative addresses in memory than they are | |
692 | in the objfile, since all sections in the file will start | |
693 | at address zero. | |
694 | ||
695 | Because GDB has very limited ability to map from an | |
696 | address in debug info to the correct code section, | |
697 | it relies on adding SECT_OFF_TEXT to things which might be | |
698 | code. If we clear all the section offsets, and set the | |
699 | section VMAs instead, then symfile_relocate_debug_section | |
700 | will return meaningful debug information pointing at the | |
701 | correct sections. | |
702 | ||
703 | GDB has too many different data structures for section | |
704 | addresses - a bfd, objfile, and so_list all have section | |
705 | tables, as does exec_ops. Some of these could probably | |
706 | be eliminated. */ | |
707 | ||
708 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
709 | cur_sec = cur_sec->next) | |
710 | { | |
711 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
712 | continue; | |
713 | ||
714 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
715 | exec_set_section_address (bfd_get_filename (abfd), |
716 | cur_sec->index, | |
30510692 | 717 | offsets[cur_sec->index]); |
2711e456 DJ |
718 | offsets[cur_sec->index] = 0; |
719 | } | |
720 | } | |
c1bd25fd DJ |
721 | } |
722 | ||
e8289572 | 723 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 724 | .rodata sections. */ |
e8289572 JB |
725 | init_objfile_sect_indices (objfile); |
726 | } | |
727 | ||
31d99776 DJ |
728 | /* Divide the file into segments, which are individual relocatable units. |
729 | This is the default version of the sym_fns.sym_segments function for | |
730 | symbol readers that do not have an explicit representation of segments. | |
731 | It assumes that object files do not have segments, and fully linked | |
732 | files have a single segment. */ | |
733 | ||
734 | struct symfile_segment_data * | |
735 | default_symfile_segments (bfd *abfd) | |
736 | { | |
737 | int num_sections, i; | |
738 | asection *sect; | |
739 | struct symfile_segment_data *data; | |
740 | CORE_ADDR low, high; | |
741 | ||
742 | /* Relocatable files contain enough information to position each | |
743 | loadable section independently; they should not be relocated | |
744 | in segments. */ | |
745 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
746 | return NULL; | |
747 | ||
748 | /* Make sure there is at least one loadable section in the file. */ | |
749 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
750 | { | |
751 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
752 | continue; | |
753 | ||
754 | break; | |
755 | } | |
756 | if (sect == NULL) | |
757 | return NULL; | |
758 | ||
759 | low = bfd_get_section_vma (abfd, sect); | |
760 | high = low + bfd_get_section_size (sect); | |
761 | ||
41bf6aca | 762 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 763 | data->num_segments = 1; |
fc270c35 TT |
764 | data->segment_bases = XCNEW (CORE_ADDR); |
765 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
766 | |
767 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 768 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
769 | |
770 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
771 | { | |
772 | CORE_ADDR vma; | |
773 | ||
774 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
775 | continue; | |
776 | ||
777 | vma = bfd_get_section_vma (abfd, sect); | |
778 | if (vma < low) | |
779 | low = vma; | |
780 | if (vma + bfd_get_section_size (sect) > high) | |
781 | high = vma + bfd_get_section_size (sect); | |
782 | ||
783 | data->segment_info[i] = 1; | |
784 | } | |
785 | ||
786 | data->segment_bases[0] = low; | |
787 | data->segment_sizes[0] = high - low; | |
788 | ||
789 | return data; | |
790 | } | |
791 | ||
608e2dbb TT |
792 | /* This is a convenience function to call sym_read for OBJFILE and |
793 | possibly force the partial symbols to be read. */ | |
794 | ||
795 | static void | |
b15cc25c | 796 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
797 | { |
798 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 799 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
800 | |
801 | /* find_separate_debug_file_in_section should be called only if there is | |
802 | single binary with no existing separate debug info file. */ | |
803 | if (!objfile_has_partial_symbols (objfile) | |
804 | && objfile->separate_debug_objfile == NULL | |
805 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 806 | { |
192b62ce | 807 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
808 | |
809 | if (abfd != NULL) | |
24ba069a JK |
810 | { |
811 | /* find_separate_debug_file_in_section uses the same filename for the | |
812 | virtual section-as-bfd like the bfd filename containing the | |
813 | section. Therefore use also non-canonical name form for the same | |
814 | file containing the section. */ | |
921222e2 TT |
815 | symbol_file_add_separate (abfd.get (), |
816 | bfd_get_filename (abfd.get ()), | |
817 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 818 | } |
608e2dbb TT |
819 | } |
820 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
821 | require_partial_symbols (objfile, 0); | |
822 | } | |
823 | ||
3d6e24f0 JB |
824 | /* Initialize entry point information for this objfile. */ |
825 | ||
826 | static void | |
827 | init_entry_point_info (struct objfile *objfile) | |
828 | { | |
6ef55de7 TT |
829 | struct entry_info *ei = &objfile->per_bfd->ei; |
830 | ||
831 | if (ei->initialized) | |
832 | return; | |
833 | ei->initialized = 1; | |
834 | ||
3d6e24f0 JB |
835 | /* Save startup file's range of PC addresses to help blockframe.c |
836 | decide where the bottom of the stack is. */ | |
837 | ||
838 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
839 | { | |
840 | /* Executable file -- record its entry point so we'll recognize | |
841 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
842 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
843 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
844 | } |
845 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
846 | && bfd_get_start_address (objfile->obfd) != 0) | |
847 | { | |
848 | /* Some shared libraries may have entry points set and be | |
849 | runnable. There's no clear way to indicate this, so just check | |
850 | for values other than zero. */ | |
6ef55de7 TT |
851 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
852 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
853 | } |
854 | else | |
855 | { | |
856 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 857 | ei->entry_point_p = 0; |
3d6e24f0 JB |
858 | } |
859 | ||
6ef55de7 | 860 | if (ei->entry_point_p) |
3d6e24f0 | 861 | { |
53eddfa6 | 862 | struct obj_section *osect; |
6ef55de7 | 863 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 864 | int found; |
3d6e24f0 JB |
865 | |
866 | /* Make certain that the address points at real code, and not a | |
867 | function descriptor. */ | |
868 | entry_point | |
df6d5441 | 869 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 | 870 | entry_point, |
8b88a78e | 871 | current_top_target ()); |
3d6e24f0 JB |
872 | |
873 | /* Remove any ISA markers, so that this matches entries in the | |
874 | symbol table. */ | |
6ef55de7 | 875 | ei->entry_point |
df6d5441 | 876 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
877 | |
878 | found = 0; | |
879 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
880 | { | |
881 | struct bfd_section *sect = osect->the_bfd_section; | |
882 | ||
883 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
884 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
885 | + bfd_get_section_size (sect))) | |
886 | { | |
6ef55de7 | 887 | ei->the_bfd_section_index |
53eddfa6 TT |
888 | = gdb_bfd_section_index (objfile->obfd, sect); |
889 | found = 1; | |
890 | break; | |
891 | } | |
892 | } | |
893 | ||
894 | if (!found) | |
6ef55de7 | 895 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
896 | } |
897 | } | |
898 | ||
c906108c SS |
899 | /* Process a symbol file, as either the main file or as a dynamically |
900 | loaded file. | |
901 | ||
36e4d068 JB |
902 | This function does not set the OBJFILE's entry-point info. |
903 | ||
96baa820 JM |
904 | OBJFILE is where the symbols are to be read from. |
905 | ||
7e8580c1 JB |
906 | ADDRS is the list of section load addresses. If the user has given |
907 | an 'add-symbol-file' command, then this is the list of offsets and | |
908 | addresses he or she provided as arguments to the command; or, if | |
909 | we're handling a shared library, these are the actual addresses the | |
910 | sections are loaded at, according to the inferior's dynamic linker | |
911 | (as gleaned by GDB's shared library code). We convert each address | |
912 | into an offset from the section VMA's as it appears in the object | |
913 | file, and then call the file's sym_offsets function to convert this | |
914 | into a format-specific offset table --- a `struct section_offsets'. | |
d81a3eaf PT |
915 | The sectindex field is used to control the ordering of sections |
916 | with the same name. Upon return, it is updated to contain the | |
917 | correspondig BFD section index, or -1 if the section was not found. | |
96baa820 | 918 | |
7eedccfa PP |
919 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
920 | an extra symbol file such as dynamically loaded code, and wether | |
921 | breakpoint reset should be deferred. */ | |
c906108c | 922 | |
36e4d068 JB |
923 | static void |
924 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 925 | section_addr_info *addrs, |
b15cc25c | 926 | symfile_add_flags add_flags) |
c906108c | 927 | { |
37e136b1 | 928 | section_addr_info local_addr; |
7eedccfa | 929 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 930 | |
8fb8eb5c | 931 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 932 | |
75245b24 | 933 | if (objfile->sf == NULL) |
36e4d068 JB |
934 | { |
935 | /* No symbols to load, but we still need to make sure | |
936 | that the section_offsets table is allocated. */ | |
d445b2f6 | 937 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 938 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
939 | |
940 | objfile->num_sections = num_sections; | |
941 | objfile->section_offsets | |
224c3ddb SM |
942 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
943 | size); | |
36e4d068 JB |
944 | memset (objfile->section_offsets, 0, size); |
945 | return; | |
946 | } | |
75245b24 | 947 | |
c906108c SS |
948 | /* Make sure that partially constructed symbol tables will be cleaned up |
949 | if an error occurs during symbol reading. */ | |
286526c1 TT |
950 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
951 | ||
ed2b3126 | 952 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
c906108c | 953 | |
6bf667bb DE |
954 | /* If ADDRS is NULL, put together a dummy address list. |
955 | We now establish the convention that an addr of zero means | |
c378eb4e | 956 | no load address was specified. */ |
6bf667bb | 957 | if (! addrs) |
37e136b1 | 958 | addrs = &local_addr; |
a39a16c4 | 959 | |
c5aa993b | 960 | if (mainline) |
c906108c SS |
961 | { |
962 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 963 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 964 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
965 | |
966 | /* Since no error yet, throw away the old symbol table. */ | |
967 | ||
968 | if (symfile_objfile != NULL) | |
969 | { | |
9e86da07 | 970 | delete symfile_objfile; |
adb7f338 | 971 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
972 | } |
973 | ||
974 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
975 | If the user wants to get rid of them, they should do "symbol-file" |
976 | without arguments first. Not sure this is the best behavior | |
977 | (PR 2207). */ | |
c906108c | 978 | |
c5aa993b | 979 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
980 | } |
981 | ||
982 | /* Convert addr into an offset rather than an absolute address. | |
983 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 984 | and assume that <addr> is where that got loaded. |
c906108c | 985 | |
53a5351d JM |
986 | We no longer warn if the lowest section is not a text segment (as |
987 | happens for the PA64 port. */ | |
37e136b1 | 988 | if (addrs->size () > 0) |
75242ef4 | 989 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
990 | |
991 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
992 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 993 | initial symbol reading for this file. */ |
c906108c | 994 | |
c5aa993b | 995 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 996 | clear_complaints (); |
c906108c | 997 | |
37e136b1 | 998 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 999 | |
608e2dbb | 1000 | read_symbols (objfile, add_flags); |
b11896a5 | 1001 | |
c906108c SS |
1002 | /* Discard cleanups as symbol reading was successful. */ |
1003 | ||
ed2b3126 | 1004 | objfile_holder.release (); |
286526c1 TT |
1005 | if (defer_clear_users) |
1006 | defer_clear_users->release (); | |
c906108c SS |
1007 | } |
1008 | ||
36e4d068 JB |
1009 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1010 | entry-point info. */ | |
1011 | ||
6bf667bb | 1012 | static void |
36e4d068 | 1013 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 1014 | section_addr_info *addrs, |
b15cc25c | 1015 | symfile_add_flags add_flags) |
36e4d068 | 1016 | { |
6bf667bb | 1017 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1018 | init_entry_point_info (objfile); |
1019 | } | |
1020 | ||
c906108c SS |
1021 | /* Perform required actions after either reading in the initial |
1022 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1023 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1024 | |
e7d52ed3 | 1025 | static void |
b15cc25c | 1026 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1027 | { |
c906108c | 1028 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1029 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1030 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1031 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1032 | { |
1033 | /* OK, make it the "real" symbol file. */ | |
1034 | symfile_objfile = objfile; | |
1035 | ||
c1e56572 | 1036 | clear_symtab_users (add_flags); |
c906108c | 1037 | } |
7eedccfa | 1038 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1039 | { |
69de3c6a | 1040 | breakpoint_re_set (); |
c906108c SS |
1041 | } |
1042 | ||
1043 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1044 | clear_complaints (); |
c906108c SS |
1045 | } |
1046 | ||
1047 | /* Process a symbol file, as either the main file or as a dynamically | |
1048 | loaded file. | |
1049 | ||
5417f6dc | 1050 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1051 | A new reference is acquired by this function. |
7904e09f | 1052 | |
9e86da07 | 1053 | For NAME description see the objfile constructor. |
24ba069a | 1054 | |
7eedccfa PP |
1055 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1056 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1057 | |
6bf667bb | 1058 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1059 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1060 | |
63524580 JK |
1061 | PARENT is the original objfile if ABFD is a separate debug info file. |
1062 | Otherwise PARENT is NULL. | |
1063 | ||
c906108c | 1064 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1065 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1066 | |
7904e09f | 1067 | static struct objfile * |
b15cc25c PA |
1068 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1069 | symfile_add_flags add_flags, | |
37e136b1 | 1070 | section_addr_info *addrs, |
b15cc25c | 1071 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1072 | { |
1073 | struct objfile *objfile; | |
7eedccfa | 1074 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1075 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1076 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1077 | && (readnow_symbol_files |
1078 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1079 | |
9291a0cd | 1080 | if (readnow_symbol_files) |
b11896a5 TT |
1081 | { |
1082 | flags |= OBJF_READNOW; | |
1083 | add_flags &= ~SYMFILE_NO_READ; | |
1084 | } | |
97cbe998 SDJ |
1085 | else if (readnever_symbol_files |
1086 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1087 | { | |
1088 | flags |= OBJF_READNEVER; | |
1089 | add_flags |= SYMFILE_NO_READ; | |
1090 | } | |
921222e2 TT |
1091 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1092 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1093 | |
5417f6dc RM |
1094 | /* Give user a chance to burp if we'd be |
1095 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1096 | |
1097 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1098 | && mainline |
c906108c | 1099 | && from_tty |
9e2f0ad4 | 1100 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1101 | error (_("Not confirmed.")); |
c906108c | 1102 | |
b15cc25c PA |
1103 | if (mainline) |
1104 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1105 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1106 | |
63524580 JK |
1107 | if (parent) |
1108 | add_separate_debug_objfile (objfile, parent); | |
1109 | ||
78a4a9b9 AC |
1110 | /* We either created a new mapped symbol table, mapped an existing |
1111 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1112 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1113 | if (should_print) |
c906108c | 1114 | { |
769d7dc4 AC |
1115 | if (deprecated_pre_add_symbol_hook) |
1116 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1117 | else |
47fd17cd TT |
1118 | { |
1119 | puts_filtered (_("Reading symbols from ")); | |
1120 | fputs_styled (name, file_name_style.style (), gdb_stdout); | |
1121 | puts_filtered ("...\n"); | |
1122 | } | |
c906108c | 1123 | } |
6bf667bb | 1124 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1125 | |
1126 | /* We now have at least a partial symbol table. Check to see if the | |
1127 | user requested that all symbols be read on initial access via either | |
1128 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1129 | all partial symbol tables for this objfile if so. */ |
c906108c | 1130 | |
9291a0cd | 1131 | if ((flags & OBJF_READNOW)) |
c906108c | 1132 | { |
b11896a5 | 1133 | if (should_print) |
3453e7e4 | 1134 | printf_filtered (_("Expanding full symbols from %s...\n"), name); |
c906108c | 1135 | |
ccefe4c4 TT |
1136 | if (objfile->sf) |
1137 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1138 | } |
1139 | ||
e79497a1 TT |
1140 | /* Note that we only print a message if we have no symbols and have |
1141 | no separate debug file. If there is a separate debug file which | |
1142 | does not have symbols, we'll have emitted this message for that | |
1143 | file, and so printing it twice is just redundant. */ | |
1144 | if (should_print && !objfile_has_symbols (objfile) | |
1145 | && objfile->separate_debug_objfile == nullptr) | |
3453e7e4 | 1146 | printf_filtered (_("(No debugging symbols found in %s)\n"), name); |
cb3c37b2 | 1147 | |
b11896a5 | 1148 | if (should_print) |
c906108c | 1149 | { |
769d7dc4 AC |
1150 | if (deprecated_post_add_symbol_hook) |
1151 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1152 | } |
1153 | ||
481d0f41 JB |
1154 | /* We print some messages regardless of whether 'from_tty || |
1155 | info_verbose' is true, so make sure they go out at the right | |
1156 | time. */ | |
1157 | gdb_flush (gdb_stdout); | |
1158 | ||
109f874e | 1159 | if (objfile->sf == NULL) |
8caee43b | 1160 | { |
76727919 | 1161 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1162 | return objfile; /* No symbols. */ |
8caee43b | 1163 | } |
109f874e | 1164 | |
e7d52ed3 | 1165 | finish_new_objfile (objfile, add_flags); |
c906108c | 1166 | |
76727919 | 1167 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1168 | |
ce7d4522 | 1169 | bfd_cache_close_all (); |
c906108c SS |
1170 | return (objfile); |
1171 | } | |
1172 | ||
24ba069a | 1173 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1174 | see the objfile constructor. */ |
9cce227f TG |
1175 | |
1176 | void | |
b15cc25c PA |
1177 | symbol_file_add_separate (bfd *bfd, const char *name, |
1178 | symfile_add_flags symfile_flags, | |
24ba069a | 1179 | struct objfile *objfile) |
9cce227f | 1180 | { |
089b4803 TG |
1181 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1182 | because sections of BFD may not match sections of OBJFILE and because | |
1183 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1184 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1185 | |
870f88f7 | 1186 | symbol_file_add_with_addrs |
37e136b1 | 1187 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1188 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1189 | | OBJF_USERLOADED), |
1190 | objfile); | |
9cce227f | 1191 | } |
7904e09f | 1192 | |
eb4556d7 JB |
1193 | /* Process the symbol file ABFD, as either the main file or as a |
1194 | dynamically loaded file. | |
6bf667bb | 1195 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1196 | |
eb4556d7 | 1197 | struct objfile * |
b15cc25c PA |
1198 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1199 | symfile_add_flags add_flags, | |
37e136b1 | 1200 | section_addr_info *addrs, |
b15cc25c | 1201 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1202 | { |
24ba069a JK |
1203 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1204 | parent); | |
eb4556d7 JB |
1205 | } |
1206 | ||
7904e09f | 1207 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1208 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1209 | |
7904e09f | 1210 | struct objfile * |
b15cc25c | 1211 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1212 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1213 | { |
192b62ce | 1214 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1215 | |
192b62ce TT |
1216 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1217 | flags, NULL); | |
7904e09f JB |
1218 | } |
1219 | ||
d7db6da9 FN |
1220 | /* Call symbol_file_add() with default values and update whatever is |
1221 | affected by the loading of a new main(). | |
1222 | Used when the file is supplied in the gdb command line | |
1223 | and by some targets with special loading requirements. | |
1224 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1225 | argument for the switches that can only be specified in the symbol_file | |
1226 | command itself. */ | |
5417f6dc | 1227 | |
1adeb98a | 1228 | void |
ecf45d2c | 1229 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1230 | { |
d4d429d5 | 1231 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1232 | } |
1233 | ||
1234 | static void | |
ecf45d2c | 1235 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1236 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1237 | { |
ecf45d2c | 1238 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1239 | |
d4d429d5 PT |
1240 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1241 | if (reloff != 0) | |
1242 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1243 | |
d7db6da9 FN |
1244 | /* Getting new symbols may change our opinion about |
1245 | what is frameless. */ | |
1246 | reinit_frame_cache (); | |
1247 | ||
b15cc25c | 1248 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1249 | set_initial_language (); |
1adeb98a FN |
1250 | } |
1251 | ||
1252 | void | |
1253 | symbol_file_clear (int from_tty) | |
1254 | { | |
1255 | if ((have_full_symbols () || have_partial_symbols ()) | |
1256 | && from_tty | |
0430b0d6 AS |
1257 | && (symfile_objfile |
1258 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1259 | objfile_name (symfile_objfile)) |
0430b0d6 | 1260 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1261 | error (_("Not confirmed.")); |
1adeb98a | 1262 | |
0133421a JK |
1263 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1264 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1265 | no_shared_libraries (NULL, from_tty); |
1266 | ||
0133421a JK |
1267 | free_all_objfiles (); |
1268 | ||
adb7f338 | 1269 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1270 | if (from_tty) |
22068491 | 1271 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1272 | } |
1273 | ||
c4dcb155 SM |
1274 | /* See symfile.h. */ |
1275 | ||
1276 | int separate_debug_file_debug = 0; | |
1277 | ||
5b5d99cf | 1278 | static int |
a8dbfd58 | 1279 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1280 | struct objfile *parent_objfile) |
5b5d99cf | 1281 | { |
904578ed JK |
1282 | unsigned long file_crc; |
1283 | int file_crc_p; | |
32a0e547 | 1284 | struct stat parent_stat, abfd_stat; |
904578ed | 1285 | int verified_as_different; |
32a0e547 JK |
1286 | |
1287 | /* Find a separate debug info file as if symbols would be present in | |
1288 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1289 | section can contain just the basename of PARENT_OBJFILE without any | |
1290 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1291 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1292 | |
a8dbfd58 | 1293 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1294 | return 0; |
5b5d99cf | 1295 | |
c4dcb155 | 1296 | if (separate_debug_file_debug) |
50794b45 SM |
1297 | { |
1298 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1299 | gdb_flush (gdb_stdout); | |
1300 | } | |
c4dcb155 | 1301 | |
a8dbfd58 | 1302 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1)); |
f1838a98 | 1303 | |
192b62ce | 1304 | if (abfd == NULL) |
50794b45 SM |
1305 | { |
1306 | if (separate_debug_file_debug) | |
1307 | printf_filtered (_(" no, unable to open.\n")); | |
1308 | ||
1309 | return 0; | |
1310 | } | |
5b5d99cf | 1311 | |
0ba1096a | 1312 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1313 | |
1314 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1315 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1316 | meaningful st_dev.) Files accessed from gdbservers that do not |
1317 | support the vFile:fstat packet will also have st_ino set to zero. | |
1318 | Do not indicate a duplicate library in either case. While there | |
1319 | is no guarantee that a system that provides meaningful inode | |
1320 | numbers will never set st_ino to zero, this is merely an | |
1321 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1322 | |
192b62ce | 1323 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1324 | && abfd_stat.st_ino != 0 |
1325 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1326 | { |
904578ed JK |
1327 | if (abfd_stat.st_dev == parent_stat.st_dev |
1328 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1329 | { |
1330 | if (separate_debug_file_debug) | |
1331 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1332 | ||
1333 | return 0; | |
1334 | } | |
904578ed | 1335 | verified_as_different = 1; |
32a0e547 | 1336 | } |
904578ed JK |
1337 | else |
1338 | verified_as_different = 0; | |
32a0e547 | 1339 | |
192b62ce | 1340 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1341 | |
904578ed | 1342 | if (!file_crc_p) |
50794b45 SM |
1343 | { |
1344 | if (separate_debug_file_debug) | |
1345 | printf_filtered (_(" no, error computing CRC.\n")); | |
1346 | ||
1347 | return 0; | |
1348 | } | |
904578ed | 1349 | |
287ccc17 JK |
1350 | if (crc != file_crc) |
1351 | { | |
dccee2de TT |
1352 | unsigned long parent_crc; |
1353 | ||
0a93529c GB |
1354 | /* If the files could not be verified as different with |
1355 | bfd_stat then we need to calculate the parent's CRC | |
1356 | to verify whether the files are different or not. */ | |
904578ed | 1357 | |
dccee2de | 1358 | if (!verified_as_different) |
904578ed | 1359 | { |
dccee2de | 1360 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1361 | { |
1362 | if (separate_debug_file_debug) | |
1363 | printf_filtered (_(" no, error computing CRC.\n")); | |
1364 | ||
1365 | return 0; | |
1366 | } | |
904578ed JK |
1367 | } |
1368 | ||
dccee2de | 1369 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1370 | warning (_("the debug information found in \"%s\"" |
1371 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1372 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1373 | |
50794b45 SM |
1374 | if (separate_debug_file_debug) |
1375 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1376 | ||
287ccc17 JK |
1377 | return 0; |
1378 | } | |
1379 | ||
50794b45 SM |
1380 | if (separate_debug_file_debug) |
1381 | printf_filtered (_(" yes!\n")); | |
1382 | ||
287ccc17 | 1383 | return 1; |
5b5d99cf JB |
1384 | } |
1385 | ||
aa28a74e | 1386 | char *debug_file_directory = NULL; |
920d2a44 AC |
1387 | static void |
1388 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1389 | struct cmd_list_element *c, const char *value) | |
1390 | { | |
3e43a32a MS |
1391 | fprintf_filtered (file, |
1392 | _("The directory where separate debug " | |
1393 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1394 | value); |
1395 | } | |
5b5d99cf JB |
1396 | |
1397 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1398 | #define DEBUG_SUBDIRECTORY ".debug" | |
1399 | #endif | |
1400 | ||
1db33378 PP |
1401 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1402 | where the original file resides (may not be the same as | |
1403 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1404 | looking for. CANON_DIR is the "realpath" form of DIR. |
1405 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1406 | Returns the path of the file with separate debug info, or an empty |
1407 | string. */ | |
1db33378 | 1408 | |
a8dbfd58 | 1409 | static std::string |
1db33378 PP |
1410 | find_separate_debug_file (const char *dir, |
1411 | const char *canon_dir, | |
1412 | const char *debuglink, | |
1413 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1414 | { |
c4dcb155 | 1415 | if (separate_debug_file_debug) |
22068491 TT |
1416 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1417 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1418 | |
5b5d99cf | 1419 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1420 | std::string debugfile = dir; |
1421 | debugfile += debuglink; | |
5b5d99cf | 1422 | |
32a0e547 | 1423 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1424 | return debugfile; |
5417f6dc | 1425 | |
5b5d99cf | 1426 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1427 | debugfile = dir; |
1428 | debugfile += DEBUG_SUBDIRECTORY; | |
1429 | debugfile += "/"; | |
1430 | debugfile += debuglink; | |
5b5d99cf | 1431 | |
32a0e547 | 1432 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1433 | return debugfile; |
5417f6dc | 1434 | |
24ddea62 | 1435 | /* Then try in the global debugfile directories. |
f888f159 | 1436 | |
24ddea62 JK |
1437 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1438 | cause "/..." lookups. */ | |
5417f6dc | 1439 | |
5d36dfb9 AU |
1440 | bool target_prefix = startswith (dir, "target:"); |
1441 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1442 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1443 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
f62318e9 | 1444 | gdb::unique_xmalloc_ptr<char> canon_sysroot = gdb_realpath (gdb_sysroot); |
24ddea62 | 1445 | |
5f2459c2 EZ |
1446 | /* MS-Windows/MS-DOS don't allow colons in file names; we must |
1447 | convert the drive letter into a one-letter directory, so that the | |
1448 | file name resulting from splicing below will be valid. | |
1449 | ||
1450 | FIXME: The below only works when GDB runs on MS-Windows/MS-DOS. | |
1451 | There are various remote-debugging scenarios where such a | |
1452 | transformation of the drive letter might be required when GDB runs | |
1453 | on a Posix host, see | |
1454 | ||
1455 | https://sourceware.org/ml/gdb-patches/2019-04/msg00605.html | |
1456 | ||
1457 | If some of those scenarions need to be supported, we will need to | |
1458 | use a different condition for HAS_DRIVE_SPEC and a different macro | |
1459 | instead of STRIP_DRIVE_SPEC, which work on Posix systems as well. */ | |
1460 | std::string drive; | |
1461 | if (HAS_DRIVE_SPEC (dir_notarget)) | |
1462 | { | |
1463 | drive = dir_notarget[0]; | |
1464 | dir_notarget = STRIP_DRIVE_SPEC (dir_notarget); | |
1465 | } | |
1466 | ||
e80aaf61 | 1467 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1468 | { |
5d36dfb9 AU |
1469 | debugfile = target_prefix ? "target:" : ""; |
1470 | debugfile += debugdir.get (); | |
a8dbfd58 | 1471 | debugfile += "/"; |
5f2459c2 | 1472 | debugfile += drive; |
5d36dfb9 | 1473 | debugfile += dir_notarget; |
a8dbfd58 | 1474 | debugfile += debuglink; |
aa28a74e | 1475 | |
32a0e547 | 1476 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1477 | return debugfile; |
24ddea62 | 1478 | |
f62318e9 JB |
1479 | const char *base_path = NULL; |
1480 | if (canon_dir != NULL) | |
1481 | { | |
1482 | if (canon_sysroot.get () != NULL) | |
1483 | base_path = child_path (canon_sysroot.get (), canon_dir); | |
1484 | else | |
1485 | base_path = child_path (gdb_sysroot, canon_dir); | |
1486 | } | |
1487 | if (base_path != NULL) | |
24ddea62 | 1488 | { |
402d2bfe JB |
1489 | /* If the file is in the sysroot, try using its base path in |
1490 | the global debugfile directory. */ | |
5d36dfb9 AU |
1491 | debugfile = target_prefix ? "target:" : ""; |
1492 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1493 | debugfile += "/"; |
1494 | debugfile += base_path; | |
a8dbfd58 SM |
1495 | debugfile += "/"; |
1496 | debugfile += debuglink; | |
24ddea62 | 1497 | |
402d2bfe JB |
1498 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1499 | return debugfile; | |
1500 | ||
1501 | /* If the file is in the sysroot, try using its base path in | |
1502 | the sysroot's global debugfile directory. */ | |
1503 | debugfile = target_prefix ? "target:" : ""; | |
1504 | debugfile += gdb_sysroot; | |
1505 | debugfile += debugdir.get (); | |
cd4b7848 JB |
1506 | debugfile += "/"; |
1507 | debugfile += base_path; | |
402d2bfe JB |
1508 | debugfile += "/"; |
1509 | debugfile += debuglink; | |
1510 | ||
32a0e547 | 1511 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1512 | return debugfile; |
24ddea62 | 1513 | } |
402d2bfe | 1514 | |
aa28a74e | 1515 | } |
f888f159 | 1516 | |
a8dbfd58 | 1517 | return std::string (); |
1db33378 PP |
1518 | } |
1519 | ||
7edbb660 | 1520 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1521 | If there were no directory separators in PATH, PATH will be empty |
1522 | string on return. */ | |
1523 | ||
1524 | static void | |
1525 | terminate_after_last_dir_separator (char *path) | |
1526 | { | |
1527 | int i; | |
1528 | ||
1529 | /* Strip off the final filename part, leaving the directory name, | |
1530 | followed by a slash. The directory can be relative or absolute. */ | |
1531 | for (i = strlen(path) - 1; i >= 0; i--) | |
1532 | if (IS_DIR_SEPARATOR (path[i])) | |
1533 | break; | |
1534 | ||
1535 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1536 | path[i + 1] = '\0'; | |
1537 | } | |
1538 | ||
1539 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1540 | Returns pathname, or an empty string. */ |
1db33378 | 1541 | |
a8dbfd58 | 1542 | std::string |
1db33378 PP |
1543 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1544 | { | |
1db33378 | 1545 | unsigned long crc32; |
1db33378 | 1546 | |
5eae7aea TT |
1547 | gdb::unique_xmalloc_ptr<char> debuglink |
1548 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1549 | |
1550 | if (debuglink == NULL) | |
1551 | { | |
1552 | /* There's no separate debug info, hence there's no way we could | |
1553 | load it => no warning. */ | |
a8dbfd58 | 1554 | return std::string (); |
1db33378 PP |
1555 | } |
1556 | ||
5eae7aea TT |
1557 | std::string dir = objfile_name (objfile); |
1558 | terminate_after_last_dir_separator (&dir[0]); | |
1559 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1560 | |
a8dbfd58 SM |
1561 | std::string debugfile |
1562 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1563 | debuglink.get (), crc32, objfile); | |
1db33378 | 1564 | |
a8dbfd58 | 1565 | if (debugfile.empty ()) |
1db33378 | 1566 | { |
1db33378 PP |
1567 | /* For PR gdb/9538, try again with realpath (if different from the |
1568 | original). */ | |
1569 | ||
1570 | struct stat st_buf; | |
1571 | ||
4262abfb JK |
1572 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1573 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1574 | { |
5eae7aea TT |
1575 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1576 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1577 | if (symlink_dir != NULL) |
1578 | { | |
5eae7aea TT |
1579 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1580 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1581 | { |
1582 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1583 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1584 | symlink_dir.get (), | |
1585 | debuglink.get (), | |
1db33378 PP |
1586 | crc32, |
1587 | objfile); | |
1588 | } | |
1589 | } | |
1590 | } | |
1db33378 | 1591 | } |
aa28a74e | 1592 | |
25522fae | 1593 | return debugfile; |
5b5d99cf JB |
1594 | } |
1595 | ||
97cbe998 SDJ |
1596 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1597 | simultaneously. */ | |
1598 | ||
1599 | static void | |
1600 | validate_readnow_readnever (objfile_flags flags) | |
1601 | { | |
1602 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1603 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1604 | } | |
1605 | ||
c906108c SS |
1606 | /* This is the symbol-file command. Read the file, analyze its |
1607 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1608 | the command is rather bizarre: |
1609 | ||
1610 | 1. The function buildargv implements various quoting conventions | |
1611 | which are undocumented and have little or nothing in common with | |
1612 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1613 | ||
1614 | 2. Options are used, which are not generally used in GDB (perhaps | |
1615 | "set mapped on", "set readnow on" would be better) | |
1616 | ||
1617 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1618 | conventions (because it is confusing and inconvenient). */ |
1619 | ||
1620 | void | |
1d8b34a7 | 1621 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1622 | { |
c906108c SS |
1623 | dont_repeat (); |
1624 | ||
1625 | if (args == NULL) | |
1626 | { | |
1adeb98a | 1627 | symbol_file_clear (from_tty); |
c906108c SS |
1628 | } |
1629 | else | |
1630 | { | |
b15cc25c | 1631 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1632 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1633 | char *name = NULL; |
40fc416f | 1634 | bool stop_processing_options = false; |
d4d429d5 | 1635 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1636 | int idx; |
1637 | char *arg; | |
cb2f3a29 | 1638 | |
ecf45d2c SL |
1639 | if (from_tty) |
1640 | add_flags |= SYMFILE_VERBOSE; | |
1641 | ||
773a1edc | 1642 | gdb_argv built_argv (args); |
40fc416f | 1643 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1644 | { |
40fc416f | 1645 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1646 | { |
40fc416f SDJ |
1647 | if (name == NULL) |
1648 | name = arg; | |
1649 | else | |
1650 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1651 | } |
40fc416f SDJ |
1652 | else if (strcmp (arg, "-readnow") == 0) |
1653 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1654 | else if (strcmp (arg, "-readnever") == 0) |
1655 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1656 | else if (strcmp (arg, "-o") == 0) |
1657 | { | |
1658 | arg = built_argv[++idx]; | |
1659 | if (arg == NULL) | |
1660 | error (_("Missing argument to -o")); | |
1661 | ||
1662 | offset = parse_and_eval_address (arg); | |
1663 | } | |
40fc416f SDJ |
1664 | else if (strcmp (arg, "--") == 0) |
1665 | stop_processing_options = true; | |
1666 | else | |
1667 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1668 | } |
1669 | ||
1670 | if (name == NULL) | |
cb2f3a29 | 1671 | error (_("no symbol file name was specified")); |
40fc416f | 1672 | |
97cbe998 SDJ |
1673 | validate_readnow_readnever (flags); |
1674 | ||
ea142fbf AH |
1675 | /* Set SYMFILE_DEFER_BP_RESET because the proper displacement for a PIE |
1676 | (Position Independent Executable) main symbol file will only be | |
1677 | computed by the solib_create_inferior_hook below. Without it, | |
1678 | breakpoint_re_set would fail to insert the breakpoints with the zero | |
1679 | displacement. */ | |
1680 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
1681 | ||
d4d429d5 | 1682 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
ea142fbf AH |
1683 | |
1684 | solib_create_inferior_hook (from_tty); | |
1685 | ||
1686 | /* Now it's safe to re-add the breakpoints. */ | |
1687 | breakpoint_re_set (); | |
c906108c SS |
1688 | } |
1689 | } | |
1690 | ||
1691 | /* Set the initial language. | |
1692 | ||
cb2f3a29 MK |
1693 | FIXME: A better solution would be to record the language in the |
1694 | psymtab when reading partial symbols, and then use it (if known) to | |
1695 | set the language. This would be a win for formats that encode the | |
1696 | language in an easily discoverable place, such as DWARF. For | |
1697 | stabs, we can jump through hoops looking for specially named | |
1698 | symbols or try to intuit the language from the specific type of | |
1699 | stabs we find, but we can't do that until later when we read in | |
1700 | full symbols. */ | |
c906108c | 1701 | |
8b60591b | 1702 | void |
fba45db2 | 1703 | set_initial_language (void) |
c906108c | 1704 | { |
9e6c82ad | 1705 | enum language lang = main_language (); |
c906108c | 1706 | |
9e6c82ad | 1707 | if (lang == language_unknown) |
01f8c46d | 1708 | { |
cd215b2e | 1709 | const char *name = main_name (); |
d12307c1 | 1710 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1711 | |
bf6d8a91 TT |
1712 | if (sym != NULL) |
1713 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1714 | } |
cb2f3a29 | 1715 | |
ccefe4c4 TT |
1716 | if (lang == language_unknown) |
1717 | { | |
1718 | /* Make C the default language */ | |
1719 | lang = language_c; | |
c906108c | 1720 | } |
ccefe4c4 TT |
1721 | |
1722 | set_language (lang); | |
1723 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1724 | } |
1725 | ||
cb2f3a29 MK |
1726 | /* Open the file specified by NAME and hand it off to BFD for |
1727 | preliminary analysis. Return a newly initialized bfd *, which | |
1728 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1729 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1730 | |
192b62ce | 1731 | gdb_bfd_ref_ptr |
97a41605 | 1732 | symfile_bfd_open (const char *name) |
c906108c | 1733 | { |
97a41605 | 1734 | int desc = -1; |
c906108c | 1735 | |
e0cc99a6 | 1736 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1737 | if (!is_target_filename (name)) |
f1838a98 | 1738 | { |
ee0c3293 | 1739 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1740 | |
97a41605 GB |
1741 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1742 | desc = openp (getenv ("PATH"), | |
1743 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1744 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1745 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1746 | if (desc < 0) |
1747 | { | |
ee0c3293 | 1748 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1749 | |
ee0c3293 | 1750 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1751 | desc = openp (getenv ("PATH"), |
1752 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1753 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1754 | } | |
c906108c | 1755 | #endif |
97a41605 | 1756 | if (desc < 0) |
ee0c3293 | 1757 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1758 | |
e0cc99a6 | 1759 | name = absolute_name.get (); |
97a41605 | 1760 | } |
c906108c | 1761 | |
192b62ce TT |
1762 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1763 | if (sym_bfd == NULL) | |
faab9922 JK |
1764 | error (_("`%s': can't open to read symbols: %s."), name, |
1765 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1766 | |
192b62ce TT |
1767 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1768 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1769 | |
192b62ce TT |
1770 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1771 | error (_("`%s': can't read symbols: %s."), name, | |
1772 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1773 | |
1774 | return sym_bfd; | |
c906108c SS |
1775 | } |
1776 | ||
cb2f3a29 MK |
1777 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1778 | the section was not found. */ | |
1779 | ||
0e931cf0 | 1780 | int |
a121b7c1 | 1781 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1782 | { |
1783 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1784 | |
0e931cf0 JB |
1785 | if (sect) |
1786 | return sect->index; | |
1787 | else | |
1788 | return -1; | |
1789 | } | |
1790 | ||
c256e171 DE |
1791 | /* Link SF into the global symtab_fns list. |
1792 | FLAVOUR is the file format that SF handles. | |
1793 | Called on startup by the _initialize routine in each object file format | |
1794 | reader, to register information about each format the reader is prepared | |
1795 | to handle. */ | |
c906108c SS |
1796 | |
1797 | void | |
c256e171 | 1798 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1799 | { |
905014d7 | 1800 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1801 | } |
1802 | ||
cb2f3a29 MK |
1803 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1804 | either returns or calls error(). The result is an initialized | |
1805 | struct sym_fns in the objfile structure, that contains cached | |
1806 | information about the symbol file. */ | |
c906108c | 1807 | |
00b5771c | 1808 | static const struct sym_fns * |
31d99776 | 1809 | find_sym_fns (bfd *abfd) |
c906108c | 1810 | { |
31d99776 | 1811 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1812 | |
75245b24 MS |
1813 | if (our_flavour == bfd_target_srec_flavour |
1814 | || our_flavour == bfd_target_ihex_flavour | |
1815 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1816 | return NULL; /* No symbols. */ |
75245b24 | 1817 | |
905014d7 SM |
1818 | for (const registered_sym_fns &rsf : symtab_fns) |
1819 | if (our_flavour == rsf.sym_flavour) | |
1820 | return rsf.sym_fns; | |
cb2f3a29 | 1821 | |
8a3fe4f8 | 1822 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1823 | bfd_get_target (abfd)); |
c906108c SS |
1824 | } |
1825 | \f | |
cb2f3a29 | 1826 | |
c906108c SS |
1827 | /* This function runs the load command of our current target. */ |
1828 | ||
1829 | static void | |
5fed81ff | 1830 | load_command (const char *arg, int from_tty) |
c906108c | 1831 | { |
e5cc9f32 JB |
1832 | dont_repeat (); |
1833 | ||
4487aabf PA |
1834 | /* The user might be reloading because the binary has changed. Take |
1835 | this opportunity to check. */ | |
1836 | reopen_exec_file (); | |
1837 | reread_symbols (); | |
1838 | ||
b577b6af | 1839 | std::string temp; |
c906108c | 1840 | if (arg == NULL) |
1986bccd | 1841 | { |
b577b6af | 1842 | const char *parg, *prev; |
1986bccd | 1843 | |
b577b6af | 1844 | arg = get_exec_file (1); |
1986bccd | 1845 | |
b577b6af TT |
1846 | /* We may need to quote this string so buildargv can pull it |
1847 | apart. */ | |
1848 | prev = parg = arg; | |
1986bccd AS |
1849 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1850 | { | |
b577b6af TT |
1851 | temp.append (prev, parg - prev); |
1852 | prev = parg++; | |
1853 | temp.push_back ('\\'); | |
1986bccd | 1854 | } |
b577b6af TT |
1855 | /* If we have not copied anything yet, then we didn't see a |
1856 | character to quote, and we can just leave ARG unchanged. */ | |
1857 | if (!temp.empty ()) | |
1986bccd | 1858 | { |
b577b6af TT |
1859 | temp.append (prev); |
1860 | arg = temp.c_str (); | |
1986bccd AS |
1861 | } |
1862 | } | |
1863 | ||
c906108c | 1864 | target_load (arg, from_tty); |
2889e661 JB |
1865 | |
1866 | /* After re-loading the executable, we don't really know which | |
1867 | overlays are mapped any more. */ | |
1868 | overlay_cache_invalid = 1; | |
c906108c SS |
1869 | } |
1870 | ||
1871 | /* This version of "load" should be usable for any target. Currently | |
1872 | it is just used for remote targets, not inftarg.c or core files, | |
1873 | on the theory that only in that case is it useful. | |
1874 | ||
1875 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1876 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1877 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1878 | performance compares. */ | |
917317f4 | 1879 | |
917317f4 JM |
1880 | static int validate_download = 0; |
1881 | ||
e4f9b4d5 MS |
1882 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1883 | ||
1884 | static void | |
1885 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1886 | { | |
19ba03f4 | 1887 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1888 | |
2c500098 | 1889 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1890 | } |
1891 | ||
a76d924d | 1892 | /* Opaque data for load_progress. */ |
55089490 TT |
1893 | struct load_progress_data |
1894 | { | |
a76d924d | 1895 | /* Cumulative data. */ |
55089490 TT |
1896 | unsigned long write_count = 0; |
1897 | unsigned long data_count = 0; | |
1898 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1899 | }; |
1900 | ||
1901 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1902 | struct load_progress_section_data |
1903 | { | |
1904 | load_progress_section_data (load_progress_data *cumulative_, | |
1905 | const char *section_name_, ULONGEST section_size_, | |
1906 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1907 | : cumulative (cumulative_), section_name (section_name_), | |
1908 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1909 | {} | |
1910 | ||
a76d924d | 1911 | struct load_progress_data *cumulative; |
cf7a04e8 | 1912 | |
a76d924d | 1913 | /* Per-section data. */ |
cf7a04e8 | 1914 | const char *section_name; |
55089490 | 1915 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1916 | ULONGEST section_size; |
1917 | CORE_ADDR lma; | |
1918 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1919 | }; |
1920 | ||
55089490 TT |
1921 | /* Opaque data for load_section_callback. */ |
1922 | struct load_section_data | |
1923 | { | |
1924 | load_section_data (load_progress_data *progress_data_) | |
1925 | : progress_data (progress_data_) | |
1926 | {} | |
1927 | ||
1928 | ~load_section_data () | |
1929 | { | |
1930 | for (auto &&request : requests) | |
1931 | { | |
1932 | xfree (request.data); | |
1933 | delete ((load_progress_section_data *) request.baton); | |
1934 | } | |
1935 | } | |
1936 | ||
1937 | CORE_ADDR load_offset = 0; | |
1938 | struct load_progress_data *progress_data; | |
1939 | std::vector<struct memory_write_request> requests; | |
1940 | }; | |
1941 | ||
a76d924d | 1942 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1943 | |
1944 | static void | |
1945 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1946 | { | |
19ba03f4 SM |
1947 | struct load_progress_section_data *args |
1948 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1949 | struct load_progress_data *totals; |
1950 | ||
1951 | if (args == NULL) | |
1952 | /* Writing padding data. No easy way to get at the cumulative | |
1953 | stats, so just ignore this. */ | |
1954 | return; | |
1955 | ||
1956 | totals = args->cumulative; | |
1957 | ||
1958 | if (bytes == 0 && args->section_sent == 0) | |
1959 | { | |
1960 | /* The write is just starting. Let the user know we've started | |
1961 | this section. */ | |
112e8700 SM |
1962 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1963 | args->section_name, | |
1964 | hex_string (args->section_size), | |
1965 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1966 | return; |
1967 | } | |
cf7a04e8 DJ |
1968 | |
1969 | if (validate_download) | |
1970 | { | |
1971 | /* Broken memories and broken monitors manifest themselves here | |
1972 | when bring new computers to life. This doubles already slow | |
1973 | downloads. */ | |
1974 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1975 | might add a verify_memory() method to the target vector and | |
1976 | then use that. remote.c could implement that method using | |
1977 | the ``qCRC'' packet. */ | |
0efef640 | 1978 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1979 | |
0efef640 | 1980 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1981 | error (_("Download verify read failed at %s"), |
f5656ead | 1982 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1983 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1984 | error (_("Download verify compare failed at %s"), |
f5656ead | 1985 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1986 | } |
a76d924d | 1987 | totals->data_count += bytes; |
cf7a04e8 DJ |
1988 | args->lma += bytes; |
1989 | args->buffer += bytes; | |
a76d924d | 1990 | totals->write_count += 1; |
cf7a04e8 | 1991 | args->section_sent += bytes; |
522002f9 | 1992 | if (check_quit_flag () |
cf7a04e8 DJ |
1993 | || (deprecated_ui_load_progress_hook != NULL |
1994 | && deprecated_ui_load_progress_hook (args->section_name, | |
1995 | args->section_sent))) | |
1996 | error (_("Canceled the download")); | |
1997 | ||
1998 | if (deprecated_show_load_progress != NULL) | |
1999 | deprecated_show_load_progress (args->section_name, | |
2000 | args->section_sent, | |
2001 | args->section_size, | |
a76d924d DJ |
2002 | totals->data_count, |
2003 | totals->total_size); | |
cf7a04e8 DJ |
2004 | } |
2005 | ||
e4f9b4d5 MS |
2006 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
2007 | ||
2008 | static void | |
2009 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
2010 | { | |
19ba03f4 | 2011 | struct load_section_data *args = (struct load_section_data *) data; |
cf7a04e8 | 2012 | bfd_size_type size = bfd_get_section_size (asec); |
cf7a04e8 | 2013 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 2014 | |
cf7a04e8 DJ |
2015 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
2016 | return; | |
e4f9b4d5 | 2017 | |
cf7a04e8 DJ |
2018 | if (size == 0) |
2019 | return; | |
e4f9b4d5 | 2020 | |
55089490 TT |
2021 | ULONGEST begin = bfd_section_lma (abfd, asec) + args->load_offset; |
2022 | ULONGEST end = begin + size; | |
2023 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 2024 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 2025 | |
55089490 TT |
2026 | load_progress_section_data *section_data |
2027 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
2028 | begin, buffer); | |
cf7a04e8 | 2029 | |
55089490 | 2030 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
2031 | } |
2032 | ||
dcb07cfa PA |
2033 | static void print_transfer_performance (struct ui_file *stream, |
2034 | unsigned long data_count, | |
2035 | unsigned long write_count, | |
2036 | std::chrono::steady_clock::duration d); | |
2037 | ||
854f6088 SM |
2038 | /* See symfile.h. */ |
2039 | ||
c906108c | 2040 | void |
9cbe5fff | 2041 | generic_load (const char *args, int from_tty) |
c906108c | 2042 | { |
a76d924d | 2043 | struct load_progress_data total_progress; |
55089490 | 2044 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2045 | struct ui_out *uiout = current_uiout; |
a76d924d | 2046 | |
d1a41061 PP |
2047 | if (args == NULL) |
2048 | error_no_arg (_("file to load")); | |
1986bccd | 2049 | |
773a1edc | 2050 | gdb_argv argv (args); |
1986bccd | 2051 | |
ee0c3293 | 2052 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2053 | |
2054 | if (argv[1] != NULL) | |
917317f4 | 2055 | { |
f698ca8e | 2056 | const char *endptr; |
ba5f2f8a | 2057 | |
f698ca8e | 2058 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2059 | |
2060 | /* If the last word was not a valid number then | |
2061 | treat it as a file name with spaces in. */ | |
2062 | if (argv[1] == endptr) | |
2063 | error (_("Invalid download offset:%s."), argv[1]); | |
2064 | ||
2065 | if (argv[2] != NULL) | |
2066 | error (_("Too many parameters.")); | |
917317f4 | 2067 | } |
c906108c | 2068 | |
c378eb4e | 2069 | /* Open the file for loading. */ |
ee0c3293 | 2070 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2071 | if (loadfile_bfd == NULL) |
ee0c3293 | 2072 | perror_with_name (filename.get ()); |
917317f4 | 2073 | |
192b62ce | 2074 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2075 | { |
ee0c3293 | 2076 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2077 | bfd_errmsg (bfd_get_error ())); |
2078 | } | |
c5aa993b | 2079 | |
192b62ce | 2080 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2081 | (void *) &total_progress.total_size); |
2082 | ||
192b62ce | 2083 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2084 | |
dcb07cfa PA |
2085 | using namespace std::chrono; |
2086 | ||
2087 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2088 | |
a76d924d DJ |
2089 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2090 | load_progress) != 0) | |
2091 | error (_("Load failed")); | |
c906108c | 2092 | |
dcb07cfa | 2093 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2094 | |
55089490 | 2095 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2096 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 | 2097 | uiout->text ("Start address "); |
ca8d69be | 2098 | uiout->field_core_addr ("address", target_gdbarch (), entry); |
112e8700 | 2099 | uiout->text (", load size "); |
1f77b012 | 2100 | uiout->field_unsigned ("load-size", total_progress.data_count); |
112e8700 | 2101 | uiout->text ("\n"); |
fb14de7b | 2102 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2103 | |
38963c97 DJ |
2104 | /* Reset breakpoints, now that we have changed the load image. For |
2105 | instance, breakpoints may have been set (or reset, by | |
2106 | post_create_inferior) while connected to the target but before we | |
2107 | loaded the program. In that case, the prologue analyzer could | |
2108 | have read instructions from the target to find the right | |
2109 | breakpoint locations. Loading has changed the contents of that | |
2110 | memory. */ | |
2111 | ||
2112 | breakpoint_re_set (); | |
2113 | ||
a76d924d DJ |
2114 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2115 | total_progress.write_count, | |
dcb07cfa | 2116 | end_time - start_time); |
c906108c SS |
2117 | } |
2118 | ||
dcb07cfa PA |
2119 | /* Report on STREAM the performance of a memory transfer operation, |
2120 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2121 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2122 | that information is not available. TIME is how long the operation | |
2123 | lasted. */ | |
c906108c | 2124 | |
dcb07cfa | 2125 | static void |
d9fcf2fb | 2126 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2127 | unsigned long data_count, |
2128 | unsigned long write_count, | |
dcb07cfa | 2129 | std::chrono::steady_clock::duration time) |
917317f4 | 2130 | { |
dcb07cfa | 2131 | using namespace std::chrono; |
79a45e25 | 2132 | struct ui_out *uiout = current_uiout; |
2b71414d | 2133 | |
dcb07cfa | 2134 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2135 | |
112e8700 | 2136 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2137 | if (ms.count () > 0) |
8b93c638 | 2138 | { |
dcb07cfa | 2139 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2140 | |
112e8700 | 2141 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2142 | { |
1f77b012 | 2143 | uiout->field_unsigned ("transfer-rate", rate * 8); |
112e8700 | 2144 | uiout->text (" bits/sec"); |
9f43d28c DJ |
2145 | } |
2146 | else if (rate < 1024) | |
2147 | { | |
1f77b012 | 2148 | uiout->field_unsigned ("transfer-rate", rate); |
112e8700 | 2149 | uiout->text (" bytes/sec"); |
9f43d28c DJ |
2150 | } |
2151 | else | |
2152 | { | |
1f77b012 | 2153 | uiout->field_unsigned ("transfer-rate", rate / 1024); |
112e8700 | 2154 | uiout->text (" KB/sec"); |
9f43d28c | 2155 | } |
8b93c638 JM |
2156 | } |
2157 | else | |
2158 | { | |
1f77b012 | 2159 | uiout->field_unsigned ("transferred-bits", (data_count * 8)); |
112e8700 | 2160 | uiout->text (" bits in <1 sec"); |
8b93c638 JM |
2161 | } |
2162 | if (write_count > 0) | |
2163 | { | |
112e8700 | 2164 | uiout->text (", "); |
1f77b012 | 2165 | uiout->field_unsigned ("write-rate", data_count / write_count); |
112e8700 | 2166 | uiout->text (" bytes/write"); |
8b93c638 | 2167 | } |
112e8700 | 2168 | uiout->text (".\n"); |
c906108c SS |
2169 | } |
2170 | ||
291f9a96 PT |
2171 | /* Add an OFFSET to the start address of each section in OBJF, except |
2172 | sections that were specified in ADDRS. */ | |
2173 | ||
2174 | static void | |
2175 | set_objfile_default_section_offset (struct objfile *objf, | |
2176 | const section_addr_info &addrs, | |
2177 | CORE_ADDR offset) | |
2178 | { | |
2179 | /* Add OFFSET to all sections by default. */ | |
2180 | std::vector<struct section_offsets> offsets (objf->num_sections, | |
027a4c30 | 2181 | { { offset } }); |
291f9a96 PT |
2182 | |
2183 | /* Create sorted lists of all sections in ADDRS as well as all | |
2184 | sections in OBJF. */ | |
2185 | ||
2186 | std::vector<const struct other_sections *> addrs_sorted | |
2187 | = addrs_section_sort (addrs); | |
2188 | ||
2189 | section_addr_info objf_addrs | |
2190 | = build_section_addr_info_from_objfile (objf); | |
2191 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2192 | = addrs_section_sort (objf_addrs); | |
2193 | ||
2194 | /* Walk the BFD section list, and if a matching section is found in | |
2195 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2196 | unchanged. | |
2197 | ||
2198 | Note that both lists may contain multiple sections with the same | |
2199 | name, and then the sections from ADDRS are matched in BFD order | |
2200 | (thanks to sectindex). */ | |
2201 | ||
2202 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2203 | = addrs_sorted.begin (); | |
ff27d073 | 2204 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2205 | { |
2206 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2207 | int cmp = -1; | |
2208 | ||
2209 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2210 | { | |
2211 | const struct other_sections *sect = *addrs_sorted_iter; | |
2212 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2213 | cmp = strcmp (sect_name, objf_name); | |
2214 | if (cmp <= 0) | |
2215 | ++addrs_sorted_iter; | |
2216 | } | |
2217 | ||
2218 | if (cmp == 0) | |
2219 | offsets[objf_sect->sectindex].offsets[0] = 0; | |
2220 | } | |
2221 | ||
2222 | /* Apply the new section offsets. */ | |
2223 | objfile_relocate (objf, offsets.data ()); | |
2224 | } | |
2225 | ||
c906108c SS |
2226 | /* This function allows the addition of incrementally linked object files. |
2227 | It does not modify any state in the target, only in the debugger. */ | |
2228 | ||
c906108c | 2229 | static void |
2cf311eb | 2230 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2231 | { |
5af949e3 | 2232 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2233 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2234 | char *arg; |
2acceee2 | 2235 | int argcnt = 0; |
76ad5e1e | 2236 | struct objfile *objf; |
b15cc25c PA |
2237 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2238 | symfile_add_flags add_flags = 0; | |
2239 | ||
2240 | if (from_tty) | |
2241 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2242 | |
a39a16c4 | 2243 | struct sect_opt |
2acceee2 | 2244 | { |
a121b7c1 PA |
2245 | const char *name; |
2246 | const char *value; | |
a39a16c4 | 2247 | }; |
db162d44 | 2248 | |
40fc416f SDJ |
2249 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2250 | bool stop_processing_options = false; | |
291f9a96 | 2251 | CORE_ADDR offset = 0; |
c5aa993b | 2252 | |
c906108c SS |
2253 | dont_repeat (); |
2254 | ||
2255 | if (args == NULL) | |
8a3fe4f8 | 2256 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2257 | |
40fc416f | 2258 | bool seen_addr = false; |
291f9a96 | 2259 | bool seen_offset = false; |
773a1edc | 2260 | gdb_argv argv (args); |
db162d44 | 2261 | |
5b96932b AS |
2262 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2263 | { | |
40fc416f | 2264 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2265 | { |
40fc416f | 2266 | if (filename == NULL) |
41dc8db8 | 2267 | { |
40fc416f SDJ |
2268 | /* First non-option argument is always the filename. */ |
2269 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2270 | } |
40fc416f | 2271 | else if (!seen_addr) |
41dc8db8 | 2272 | { |
40fc416f SDJ |
2273 | /* The second non-option argument is always the text |
2274 | address at which to load the program. */ | |
2275 | sect_opts[0].value = arg; | |
2276 | seen_addr = true; | |
41dc8db8 MB |
2277 | } |
2278 | else | |
02ca603a | 2279 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2280 | } |
40fc416f SDJ |
2281 | else if (strcmp (arg, "-readnow") == 0) |
2282 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2283 | else if (strcmp (arg, "-readnever") == 0) |
2284 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2285 | else if (strcmp (arg, "-s") == 0) |
2286 | { | |
2287 | if (argv[argcnt + 1] == NULL) | |
2288 | error (_("Missing section name after \"-s\"")); | |
2289 | else if (argv[argcnt + 2] == NULL) | |
2290 | error (_("Missing section address after \"-s\"")); | |
2291 | ||
2292 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2293 | ||
2294 | sect_opts.push_back (sect); | |
2295 | argcnt += 2; | |
2296 | } | |
291f9a96 PT |
2297 | else if (strcmp (arg, "-o") == 0) |
2298 | { | |
2299 | arg = argv[++argcnt]; | |
2300 | if (arg == NULL) | |
2301 | error (_("Missing argument to -o")); | |
2302 | ||
2303 | offset = parse_and_eval_address (arg); | |
2304 | seen_offset = true; | |
2305 | } | |
40fc416f SDJ |
2306 | else if (strcmp (arg, "--") == 0) |
2307 | stop_processing_options = true; | |
2308 | else | |
2309 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2310 | } |
c906108c | 2311 | |
40fc416f SDJ |
2312 | if (filename == NULL) |
2313 | error (_("You must provide a filename to be loaded.")); | |
2314 | ||
97cbe998 SDJ |
2315 | validate_readnow_readnever (flags); |
2316 | ||
c378eb4e | 2317 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2318 | a sect_addr_info structure to be passed around to other |
2319 | functions. We have to split this up into separate print | |
bb599908 | 2320 | statements because hex_string returns a local static |
c378eb4e | 2321 | string. */ |
5417f6dc | 2322 | |
ed6dfe51 | 2323 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2324 | filename.get ()); |
37e136b1 | 2325 | section_addr_info section_addrs; |
ed6dfe51 PT |
2326 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2327 | if (!seen_addr) | |
2328 | ++it; | |
2329 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2330 | { |
db162d44 | 2331 | CORE_ADDR addr; |
ed6dfe51 PT |
2332 | const char *val = it->value; |
2333 | const char *sec = it->name; | |
5417f6dc | 2334 | |
ed6dfe51 PT |
2335 | if (section_addrs.empty ()) |
2336 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2337 | addr = parse_and_eval_address (val); |
db162d44 | 2338 | |
db162d44 | 2339 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2340 | entered on the command line. Every array element is |
2341 | assigned an ascending section index to preserve the above | |
2342 | order over an unstable sorting algorithm. This dummy | |
2343 | index is not used for any other purpose. | |
2344 | */ | |
2345 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2346 | printf_filtered ("\t%s_addr = %s\n", sec, |
2347 | paddress (gdbarch, addr)); | |
db162d44 | 2348 | |
5417f6dc | 2349 | /* The object's sections are initialized when a |
db162d44 | 2350 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2351 | This happens in reread_symbols. |
db162d44 EZ |
2352 | At this point, we don't know what file type this is, |
2353 | so we can't determine what section names are valid. */ | |
2acceee2 | 2354 | } |
291f9a96 PT |
2355 | if (seen_offset) |
2356 | printf_unfiltered (_("%s offset by %s\n"), | |
2357 | (section_addrs.empty () | |
2358 | ? _(" with all sections") | |
2359 | : _("with other sections")), | |
2360 | paddress (gdbarch, offset)); | |
2361 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2362 | printf_unfiltered ("\n"); |
db162d44 | 2363 | |
2acceee2 | 2364 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2365 | error (_("Not confirmed.")); |
c906108c | 2366 | |
37e136b1 TT |
2367 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2368 | flags); | |
f5686554 TT |
2369 | if (!objfile_has_symbols (objf) && objf->per_bfd->minimal_symbol_count <= 0) |
2370 | warning (_("newly-added symbol file \"%s\" does not provide any symbols"), | |
2371 | filename.get ()); | |
76ad5e1e | 2372 | |
291f9a96 PT |
2373 | if (seen_offset) |
2374 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2375 | ||
76ad5e1e | 2376 | add_target_sections_of_objfile (objf); |
c906108c SS |
2377 | |
2378 | /* Getting new symbols may change our opinion about what is | |
2379 | frameless. */ | |
2380 | reinit_frame_cache (); | |
2381 | } | |
2382 | \f | |
70992597 | 2383 | |
63644780 NB |
2384 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2385 | ||
2386 | static void | |
2cf311eb | 2387 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2388 | { |
63644780 | 2389 | struct objfile *objf = NULL; |
63644780 | 2390 | struct program_space *pspace = current_program_space; |
63644780 NB |
2391 | |
2392 | dont_repeat (); | |
2393 | ||
2394 | if (args == NULL) | |
2395 | error (_("remove-symbol-file: no symbol file provided")); | |
2396 | ||
773a1edc | 2397 | gdb_argv argv (args); |
63644780 NB |
2398 | |
2399 | if (strcmp (argv[0], "-a") == 0) | |
2400 | { | |
2401 | /* Interpret the next argument as an address. */ | |
2402 | CORE_ADDR addr; | |
2403 | ||
2404 | if (argv[1] == NULL) | |
2405 | error (_("Missing address argument")); | |
2406 | ||
2407 | if (argv[2] != NULL) | |
2408 | error (_("Junk after %s"), argv[1]); | |
2409 | ||
2410 | addr = parse_and_eval_address (argv[1]); | |
2411 | ||
2030c079 | 2412 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2413 | { |
aed57c53 TT |
2414 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2415 | && (objfile->flags & OBJF_SHARED) != 0 | |
2416 | && objfile->pspace == pspace | |
2417 | && is_addr_in_objfile (addr, objfile)) | |
2418 | { | |
2419 | objf = objfile; | |
2420 | break; | |
2421 | } | |
63644780 NB |
2422 | } |
2423 | } | |
2424 | else if (argv[0] != NULL) | |
2425 | { | |
2426 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2427 | |
2428 | if (argv[1] != NULL) | |
2429 | error (_("Junk after %s"), argv[0]); | |
2430 | ||
ee0c3293 | 2431 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2432 | |
2030c079 | 2433 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2434 | { |
aed57c53 TT |
2435 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2436 | && (objfile->flags & OBJF_SHARED) != 0 | |
2437 | && objfile->pspace == pspace | |
2438 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2439 | { | |
2440 | objf = objfile; | |
2441 | break; | |
2442 | } | |
63644780 NB |
2443 | } |
2444 | } | |
2445 | ||
2446 | if (objf == NULL) | |
2447 | error (_("No symbol file found")); | |
2448 | ||
2449 | if (from_tty | |
2450 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2451 | objfile_name (objf))) | |
2452 | error (_("Not confirmed.")); | |
2453 | ||
9e86da07 | 2454 | delete objf; |
63644780 | 2455 | clear_symtab_users (0); |
63644780 NB |
2456 | } |
2457 | ||
c906108c | 2458 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2459 | |
c906108c | 2460 | void |
fba45db2 | 2461 | reread_symbols (void) |
c906108c | 2462 | { |
c906108c | 2463 | long new_modtime; |
c906108c SS |
2464 | struct stat new_statbuf; |
2465 | int res; | |
4c404b8b | 2466 | std::vector<struct objfile *> new_objfiles; |
c906108c | 2467 | |
bf227d61 | 2468 | for (objfile *objfile : current_program_space->objfiles ()) |
c5aa993b | 2469 | { |
9cce227f TG |
2470 | if (objfile->obfd == NULL) |
2471 | continue; | |
2472 | ||
2473 | /* Separate debug objfiles are handled in the main objfile. */ | |
2474 | if (objfile->separate_debug_objfile_backlink) | |
2475 | continue; | |
2476 | ||
02aeec7b JB |
2477 | /* If this object is from an archive (what you usually create with |
2478 | `ar', often called a `static library' on most systems, though | |
2479 | a `shared library' on AIX is also an archive), then you should | |
2480 | stat on the archive name, not member name. */ | |
9cce227f TG |
2481 | if (objfile->obfd->my_archive) |
2482 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2483 | else | |
4262abfb | 2484 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2485 | if (res != 0) |
2486 | { | |
c378eb4e | 2487 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2488 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2489 | objfile_name (objfile)); | |
9cce227f TG |
2490 | continue; |
2491 | } | |
2492 | new_modtime = new_statbuf.st_mtime; | |
2493 | if (new_modtime != objfile->mtime) | |
2494 | { | |
9cce227f TG |
2495 | struct section_offsets *offsets; |
2496 | int num_offsets; | |
9cce227f | 2497 | |
22068491 TT |
2498 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2499 | objfile_name (objfile)); | |
9cce227f TG |
2500 | |
2501 | /* There are various functions like symbol_file_add, | |
2502 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2503 | appear to do what we want. But they have various other | |
2504 | effects which we *don't* want. So we just do stuff | |
2505 | ourselves. We don't worry about mapped files (for one thing, | |
2506 | any mapped file will be out of date). */ | |
2507 | ||
2508 | /* If we get an error, blow away this objfile (not sure if | |
2509 | that is the correct response for things like shared | |
2510 | libraries). */ | |
ed2b3126 TT |
2511 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2512 | ||
9cce227f | 2513 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2514 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2515 | |
0ba1096a KT |
2516 | if (exec_bfd != NULL |
2517 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2518 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2519 | { |
2520 | /* Reload EXEC_BFD without asking anything. */ | |
2521 | ||
2522 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2523 | } | |
2524 | ||
f6eeced0 JK |
2525 | /* Keep the calls order approx. the same as in free_objfile. */ |
2526 | ||
2527 | /* Free the separate debug objfiles. It will be | |
2528 | automatically recreated by sym_read. */ | |
2529 | free_objfile_separate_debug (objfile); | |
2530 | ||
2531 | /* Remove any references to this objfile in the global | |
2532 | value lists. */ | |
2533 | preserve_values (objfile); | |
2534 | ||
2535 | /* Nuke all the state that we will re-read. Much of the following | |
2536 | code which sets things to NULL really is necessary to tell | |
2537 | other parts of GDB that there is nothing currently there. | |
2538 | ||
2539 | Try to keep the freeing order compatible with free_objfile. */ | |
2540 | ||
2541 | if (objfile->sf != NULL) | |
2542 | { | |
2543 | (*objfile->sf->sym_finish) (objfile); | |
2544 | } | |
2545 | ||
2546 | clear_objfile_data (objfile); | |
2547 | ||
e1507e95 | 2548 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2549 | { |
192b62ce | 2550 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2551 | char *obfd_filename; |
a4453b7e TT |
2552 | |
2553 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2554 | /* Open the new BFD before freeing the old one, so that | |
2555 | the filename remains live. */ | |
192b62ce TT |
2556 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2557 | objfile->obfd = temp.release (); | |
e1507e95 | 2558 | if (objfile->obfd == NULL) |
192b62ce | 2559 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2560 | } |
2561 | ||
c0c9f665 | 2562 | std::string original_name = objfile->original_name; |
24ba069a | 2563 | |
9cce227f TG |
2564 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2565 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2566 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2567 | bfd_errmsg (bfd_get_error ())); |
2568 | ||
2569 | /* Save the offsets, we will nuke them with the rest of the | |
2570 | objfile_obstack. */ | |
2571 | num_offsets = objfile->num_sections; | |
2572 | offsets = ((struct section_offsets *) | |
2573 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2574 | memcpy (offsets, objfile->section_offsets, | |
2575 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2576 | ||
6d6a12bf | 2577 | objfile->reset_psymtabs (); |
41664b45 DG |
2578 | |
2579 | /* NB: after this call to obstack_free, objfiles_changed | |
2580 | will need to be called (see discussion below). */ | |
9cce227f TG |
2581 | obstack_free (&objfile->objfile_obstack, 0); |
2582 | objfile->sections = NULL; | |
43f3e411 | 2583 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2584 | objfile->template_symbols = NULL; |
cf250e36 | 2585 | objfile->static_links.reset (nullptr); |
9cce227f | 2586 | |
9cce227f TG |
2587 | /* obstack_init also initializes the obstack so it is |
2588 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2589 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2590 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2591 | |
846060df JB |
2592 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2593 | data on the objfile's obstack (if sharing data across | |
2594 | multiple users is not possible), so it's important to | |
2595 | do it *after* the obstack has been initialized. */ | |
2596 | set_objfile_per_bfd (objfile); | |
2597 | ||
224c3ddb | 2598 | objfile->original_name |
efba19b0 | 2599 | = obstack_strdup (&objfile->objfile_obstack, original_name); |
24ba069a | 2600 | |
779bd270 DE |
2601 | /* Reset the sym_fns pointer. The ELF reader can change it |
2602 | based on whether .gdb_index is present, and we need it to | |
2603 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2604 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2605 | |
d82ea6a8 | 2606 | build_objfile_section_table (objfile); |
9cce227f TG |
2607 | |
2608 | /* We use the same section offsets as from last time. I'm not | |
2609 | sure whether that is always correct for shared libraries. */ | |
2610 | objfile->section_offsets = (struct section_offsets *) | |
2611 | obstack_alloc (&objfile->objfile_obstack, | |
2612 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2613 | memcpy (objfile->section_offsets, offsets, | |
2614 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2615 | objfile->num_sections = num_offsets; | |
2616 | ||
2617 | /* What the hell is sym_new_init for, anyway? The concept of | |
2618 | distinguishing between the main file and additional files | |
2619 | in this way seems rather dubious. */ | |
2620 | if (objfile == symfile_objfile) | |
c906108c | 2621 | { |
9cce227f | 2622 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2623 | } |
9cce227f TG |
2624 | |
2625 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2626 | clear_complaints (); |
608e2dbb TT |
2627 | |
2628 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2629 | |
2630 | /* We are about to read new symbols and potentially also | |
2631 | DWARF information. Some targets may want to pass addresses | |
2632 | read from DWARF DIE's through an adjustment function before | |
2633 | saving them, like MIPS, which may call into | |
2634 | "find_pc_section". When called, that function will make | |
2635 | use of per-objfile program space data. | |
2636 | ||
2637 | Since we discarded our section information above, we have | |
2638 | dangling pointers in the per-objfile program space data | |
2639 | structure. Force GDB to update the section mapping | |
2640 | information by letting it know the objfile has changed, | |
2641 | making the dangling pointers point to correct data | |
2642 | again. */ | |
2643 | ||
2644 | objfiles_changed (); | |
2645 | ||
608e2dbb | 2646 | read_symbols (objfile, 0); |
b11896a5 | 2647 | |
9cce227f | 2648 | if (!objfile_has_symbols (objfile)) |
c906108c | 2649 | { |
9cce227f | 2650 | wrap_here (""); |
22068491 | 2651 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2652 | wrap_here (""); |
c5aa993b | 2653 | } |
9cce227f TG |
2654 | |
2655 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2656 | clear_complaints (); |
9cce227f TG |
2657 | |
2658 | /* Getting new symbols may change our opinion about what is | |
2659 | frameless. */ | |
2660 | ||
2661 | reinit_frame_cache (); | |
2662 | ||
2663 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2664 | objfile_holder.release (); |
286526c1 | 2665 | defer_clear_users.release (); |
9cce227f TG |
2666 | |
2667 | /* If the mtime has changed between the time we set new_modtime | |
2668 | and now, we *want* this to be out of date, so don't call stat | |
2669 | again now. */ | |
2670 | objfile->mtime = new_modtime; | |
9cce227f | 2671 | init_entry_point_info (objfile); |
4ac39b97 | 2672 | |
4c404b8b | 2673 | new_objfiles.push_back (objfile); |
c906108c SS |
2674 | } |
2675 | } | |
c906108c | 2676 | |
4c404b8b | 2677 | if (!new_objfiles.empty ()) |
ea53e89f | 2678 | { |
c1e56572 | 2679 | clear_symtab_users (0); |
4ac39b97 JK |
2680 | |
2681 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2682 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2683 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2684 | for (auto iter : new_objfiles) |
c486b610 | 2685 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2686 | |
ea53e89f JB |
2687 | /* At least one objfile has changed, so we can consider that |
2688 | the executable we're debugging has changed too. */ | |
76727919 | 2689 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2690 | } |
c906108c | 2691 | } |
c906108c SS |
2692 | \f |
2693 | ||
593e3209 | 2694 | struct filename_language |
c5aa993b | 2695 | { |
593e3209 SM |
2696 | filename_language (const std::string &ext_, enum language lang_) |
2697 | : ext (ext_), lang (lang_) | |
2698 | {} | |
3fcf0b0d | 2699 | |
593e3209 SM |
2700 | std::string ext; |
2701 | enum language lang; | |
2702 | }; | |
c906108c | 2703 | |
593e3209 | 2704 | static std::vector<filename_language> filename_language_table; |
c906108c | 2705 | |
56618e20 TT |
2706 | /* See symfile.h. */ |
2707 | ||
2708 | void | |
2709 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2710 | { |
593e3209 | 2711 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2712 | } |
2713 | ||
2714 | static char *ext_args; | |
920d2a44 AC |
2715 | static void |
2716 | show_ext_args (struct ui_file *file, int from_tty, | |
2717 | struct cmd_list_element *c, const char *value) | |
2718 | { | |
3e43a32a MS |
2719 | fprintf_filtered (file, |
2720 | _("Mapping between filename extension " | |
2721 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2722 | value); |
2723 | } | |
c906108c SS |
2724 | |
2725 | static void | |
eb4c3f4a TT |
2726 | set_ext_lang_command (const char *args, |
2727 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2728 | { |
c906108c SS |
2729 | char *cp = ext_args; |
2730 | enum language lang; | |
2731 | ||
c378eb4e | 2732 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2733 | if (*cp != '.') |
8a3fe4f8 | 2734 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2735 | |
2736 | /* Find end of first arg. */ | |
c5aa993b | 2737 | while (*cp && !isspace (*cp)) |
c906108c SS |
2738 | cp++; |
2739 | ||
2740 | if (*cp == '\0') | |
3e43a32a MS |
2741 | error (_("'%s': two arguments required -- " |
2742 | "filename extension and language"), | |
c906108c SS |
2743 | ext_args); |
2744 | ||
c378eb4e | 2745 | /* Null-terminate first arg. */ |
c5aa993b | 2746 | *cp++ = '\0'; |
c906108c SS |
2747 | |
2748 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2749 | cp = skip_spaces (cp); |
c906108c SS |
2750 | |
2751 | if (*cp == '\0') | |
3e43a32a MS |
2752 | error (_("'%s': two arguments required -- " |
2753 | "filename extension and language"), | |
c906108c SS |
2754 | ext_args); |
2755 | ||
2756 | /* Lookup the language from among those we know. */ | |
2757 | lang = language_enum (cp); | |
2758 | ||
593e3209 | 2759 | auto it = filename_language_table.begin (); |
c906108c | 2760 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2761 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2762 | { |
593e3209 | 2763 | if (it->ext == ext_args) |
3fcf0b0d TT |
2764 | break; |
2765 | } | |
c906108c | 2766 | |
593e3209 | 2767 | if (it == filename_language_table.end ()) |
c906108c | 2768 | { |
c378eb4e | 2769 | /* New file extension. */ |
c906108c SS |
2770 | add_filename_language (ext_args, lang); |
2771 | } | |
2772 | else | |
2773 | { | |
c378eb4e | 2774 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2775 | |
2776 | /* if (from_tty) */ | |
2777 | /* query ("Really make files of type %s '%s'?", */ | |
2778 | /* ext_args, language_str (lang)); */ | |
2779 | ||
593e3209 | 2780 | it->lang = lang; |
c906108c SS |
2781 | } |
2782 | } | |
2783 | ||
2784 | static void | |
1d12d88f | 2785 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2786 | { |
a3f17187 | 2787 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2788 | printf_filtered ("\n\n"); |
593e3209 SM |
2789 | for (const filename_language &entry : filename_language_table) |
2790 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2791 | language_str (entry.lang)); | |
c906108c SS |
2792 | } |
2793 | ||
c906108c | 2794 | enum language |
dd786858 | 2795 | deduce_language_from_filename (const char *filename) |
c906108c | 2796 | { |
e6a959d6 | 2797 | const char *cp; |
c906108c SS |
2798 | |
2799 | if (filename != NULL) | |
2800 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2801 | { |
593e3209 SM |
2802 | for (const filename_language &entry : filename_language_table) |
2803 | if (entry.ext == cp) | |
2804 | return entry.lang; | |
3fcf0b0d | 2805 | } |
c906108c SS |
2806 | |
2807 | return language_unknown; | |
2808 | } | |
2809 | \f | |
43f3e411 DE |
2810 | /* Allocate and initialize a new symbol table. |
2811 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2812 | |
2813 | struct symtab * | |
43f3e411 | 2814 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2815 | { |
43f3e411 DE |
2816 | struct objfile *objfile = cust->objfile; |
2817 | struct symtab *symtab | |
2818 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2819 | |
19ba03f4 | 2820 | symtab->filename |
25629dfd TT |
2821 | = ((const char *) objfile->per_bfd->filename_cache.insert |
2822 | (filename, strlen (filename) + 1)); | |
c5aa993b JM |
2823 | symtab->fullname = NULL; |
2824 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2825 | |
db0fec5c DE |
2826 | /* This can be very verbose with lots of headers. |
2827 | Only print at higher debug levels. */ | |
2828 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2829 | { |
2830 | /* Be a bit clever with debugging messages, and don't print objfile | |
2831 | every time, only when it changes. */ | |
2832 | static char *last_objfile_name = NULL; | |
2833 | ||
2834 | if (last_objfile_name == NULL | |
4262abfb | 2835 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2836 | { |
2837 | xfree (last_objfile_name); | |
4262abfb | 2838 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2839 | fprintf_filtered (gdb_stdlog, |
2840 | "Creating one or more symtabs for objfile %s ...\n", | |
2841 | last_objfile_name); | |
45cfd468 | 2842 | } |
22068491 TT |
2843 | fprintf_filtered (gdb_stdlog, |
2844 | "Created symtab %s for module %s.\n", | |
2845 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2846 | } |
2847 | ||
43f3e411 DE |
2848 | /* Add it to CUST's list of symtabs. */ |
2849 | if (cust->filetabs == NULL) | |
2850 | { | |
2851 | cust->filetabs = symtab; | |
2852 | cust->last_filetab = symtab; | |
2853 | } | |
2854 | else | |
2855 | { | |
2856 | cust->last_filetab->next = symtab; | |
2857 | cust->last_filetab = symtab; | |
2858 | } | |
2859 | ||
2860 | /* Backlink to the containing compunit symtab. */ | |
2861 | symtab->compunit_symtab = cust; | |
2862 | ||
2863 | return symtab; | |
2864 | } | |
2865 | ||
2866 | /* Allocate and initialize a new compunit. | |
2867 | NAME is the name of the main source file, if there is one, or some | |
2868 | descriptive text if there are no source files. */ | |
2869 | ||
2870 | struct compunit_symtab * | |
2871 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2872 | { | |
2873 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2874 | struct compunit_symtab); | |
2875 | const char *saved_name; | |
2876 | ||
2877 | cu->objfile = objfile; | |
2878 | ||
2879 | /* The name we record here is only for display/debugging purposes. | |
2880 | Just save the basename to avoid path issues (too long for display, | |
2881 | relative vs absolute, etc.). */ | |
2882 | saved_name = lbasename (name); | |
021887d8 | 2883 | cu->name = obstack_strdup (&objfile->objfile_obstack, saved_name); |
43f3e411 DE |
2884 | |
2885 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2886 | ||
2887 | if (symtab_create_debug) | |
2888 | { | |
22068491 TT |
2889 | fprintf_filtered (gdb_stdlog, |
2890 | "Created compunit symtab %s for %s.\n", | |
2891 | host_address_to_string (cu), | |
2892 | cu->name); | |
43f3e411 DE |
2893 | } |
2894 | ||
2895 | return cu; | |
2896 | } | |
2897 | ||
2898 | /* Hook CU to the objfile it comes from. */ | |
2899 | ||
2900 | void | |
2901 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2902 | { | |
2903 | cu->next = cu->objfile->compunit_symtabs; | |
2904 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2905 | } |
c906108c | 2906 | \f |
c5aa993b | 2907 | |
b15cc25c PA |
2908 | /* Reset all data structures in gdb which may contain references to |
2909 | symbol table data. */ | |
c906108c SS |
2910 | |
2911 | void | |
b15cc25c | 2912 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2913 | { |
2914 | /* Someday, we should do better than this, by only blowing away | |
2915 | the things that really need to be blown. */ | |
c0501be5 DJ |
2916 | |
2917 | /* Clear the "current" symtab first, because it is no longer valid. | |
2918 | breakpoint_re_set may try to access the current symtab. */ | |
2919 | clear_current_source_symtab_and_line (); | |
2920 | ||
c906108c | 2921 | clear_displays (); |
1bfeeb0f | 2922 | clear_last_displayed_sal (); |
c906108c | 2923 | clear_pc_function_cache (); |
76727919 | 2924 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 | 2925 | |
8756216b DP |
2926 | /* Varobj may refer to old symbols, perform a cleanup. */ |
2927 | varobj_invalidate (); | |
2928 | ||
e700d1b2 JB |
2929 | /* Now that the various caches have been cleared, we can re_set |
2930 | our breakpoints without risking it using stale data. */ | |
2931 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2932 | breakpoint_re_set (); | |
c906108c | 2933 | } |
c906108c | 2934 | \f |
c906108c SS |
2935 | /* OVERLAYS: |
2936 | The following code implements an abstraction for debugging overlay sections. | |
2937 | ||
2938 | The target model is as follows: | |
2939 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2940 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2941 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2942 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2943 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2944 | sections should be considered to be mapped from the VMA to the LMA. |
2945 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2946 | For instance, if a section has been mapped then its contents |
c5aa993b | 2947 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2948 | |
2949 | Two levels of debugger support for overlays are available. One is | |
2950 | "manual", in which the debugger relies on the user to tell it which | |
2951 | overlays are currently mapped. This level of support is | |
2952 | implemented entirely in the core debugger, and the information about | |
2953 | whether a section is mapped is kept in the objfile->obj_section table. | |
2954 | ||
2955 | The second level of support is "automatic", and is only available if | |
2956 | the target-specific code provides functionality to read the target's | |
2957 | overlay mapping table, and translate its contents for the debugger | |
2958 | (by updating the mapped state information in the obj_section tables). | |
2959 | ||
2960 | The interface is as follows: | |
c5aa993b JM |
2961 | User commands: |
2962 | overlay map <name> -- tell gdb to consider this section mapped | |
2963 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2964 | overlay list -- list the sections that GDB thinks are mapped | |
2965 | overlay read-target -- get the target's state of what's mapped | |
2966 | overlay off/manual/auto -- set overlay debugging state | |
2967 | Functional interface: | |
2968 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2969 | section, return that section. | |
5417f6dc | 2970 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2971 | the pc, either in its VMA or its LMA |
714835d5 | 2972 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2973 | section_is_overlay(sect): true if section's VMA != LMA |
2974 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2975 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2976 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2977 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2978 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2979 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2980 | either in VMA or LMA depending on whether | |
c378eb4e | 2981 | the symbol's section is currently mapped. */ |
c906108c SS |
2982 | |
2983 | /* Overlay debugging state: */ | |
2984 | ||
d874f1e2 | 2985 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2986 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2987 | |
c906108c | 2988 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2989 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2990 | SECTION is loaded at an address different from where it will "run". */ |
2991 | ||
2992 | int | |
714835d5 | 2993 | section_is_overlay (struct obj_section *section) |
c906108c | 2994 | { |
714835d5 UW |
2995 | if (overlay_debugging && section) |
2996 | { | |
714835d5 | 2997 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2998 | |
714835d5 UW |
2999 | if (bfd_section_lma (abfd, bfd_section) != 0 |
3000 | && bfd_section_lma (abfd, bfd_section) | |
3001 | != bfd_section_vma (abfd, bfd_section)) | |
3002 | return 1; | |
3003 | } | |
c906108c SS |
3004 | |
3005 | return 0; | |
3006 | } | |
3007 | ||
3008 | /* Function: overlay_invalidate_all (void) | |
3009 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3010 | ||
3011 | static void | |
fba45db2 | 3012 | overlay_invalidate_all (void) |
c906108c | 3013 | { |
c906108c SS |
3014 | struct obj_section *sect; |
3015 | ||
2030c079 | 3016 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3017 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
3018 | if (section_is_overlay (sect)) | |
3019 | sect->ovly_mapped = -1; | |
c906108c SS |
3020 | } |
3021 | ||
714835d5 | 3022 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 3023 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3024 | |
3025 | Access to the ovly_mapped flag is restricted to this function, so | |
3026 | that we can do automatic update. If the global flag | |
3027 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3028 | overlay_invalidate_all. If the mapped state of the particular | |
3029 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3030 | ||
714835d5 UW |
3031 | int |
3032 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3033 | { |
9216df95 UW |
3034 | struct gdbarch *gdbarch; |
3035 | ||
714835d5 | 3036 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3037 | return 0; |
3038 | ||
c5aa993b | 3039 | switch (overlay_debugging) |
c906108c SS |
3040 | { |
3041 | default: | |
d874f1e2 | 3042 | case ovly_off: |
c5aa993b | 3043 | return 0; /* overlay debugging off */ |
d874f1e2 | 3044 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3045 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3046 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3047 | gdbarch = get_objfile_arch (osect->objfile); |
3048 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3049 | { |
3050 | if (overlay_cache_invalid) | |
3051 | { | |
3052 | overlay_invalidate_all (); | |
3053 | overlay_cache_invalid = 0; | |
3054 | } | |
3055 | if (osect->ovly_mapped == -1) | |
9216df95 | 3056 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3057 | } |
86a73007 | 3058 | /* fall thru */ |
d874f1e2 | 3059 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3060 | return osect->ovly_mapped == 1; |
3061 | } | |
3062 | } | |
3063 | ||
c906108c SS |
3064 | /* Function: pc_in_unmapped_range |
3065 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3066 | ||
3067 | CORE_ADDR | |
714835d5 | 3068 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3069 | { |
714835d5 UW |
3070 | if (section_is_overlay (section)) |
3071 | { | |
3072 | bfd *abfd = section->objfile->obfd; | |
3073 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3074 | |
714835d5 UW |
3075 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3076 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3077 | CORE_ADDR offset = obj_section_offset (section); | |
3078 | ||
3079 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3080 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3081 | return 1; | |
3082 | } | |
c906108c | 3083 | |
c906108c SS |
3084 | return 0; |
3085 | } | |
3086 | ||
3087 | /* Function: pc_in_mapped_range | |
3088 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3089 | ||
3090 | CORE_ADDR | |
714835d5 | 3091 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3092 | { |
714835d5 UW |
3093 | if (section_is_overlay (section)) |
3094 | { | |
3095 | if (obj_section_addr (section) <= pc | |
3096 | && pc < obj_section_endaddr (section)) | |
3097 | return 1; | |
3098 | } | |
c906108c | 3099 | |
c906108c SS |
3100 | return 0; |
3101 | } | |
3102 | ||
9ec8e6a0 JB |
3103 | /* Return true if the mapped ranges of sections A and B overlap, false |
3104 | otherwise. */ | |
3b7bacac | 3105 | |
b9362cc7 | 3106 | static int |
714835d5 | 3107 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3108 | { |
714835d5 UW |
3109 | CORE_ADDR a_start = obj_section_addr (a); |
3110 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3111 | CORE_ADDR b_start = obj_section_addr (b); | |
3112 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3113 | |
3114 | return (a_start < b_end && b_start < a_end); | |
3115 | } | |
3116 | ||
c906108c SS |
3117 | /* Function: overlay_unmapped_address (PC, SECTION) |
3118 | Returns the address corresponding to PC in the unmapped (load) range. | |
3119 | May be the same as PC. */ | |
3120 | ||
3121 | CORE_ADDR | |
714835d5 | 3122 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3123 | { |
714835d5 UW |
3124 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3125 | { | |
714835d5 | 3126 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3127 | |
714835d5 UW |
3128 | return pc + bfd_section_lma (abfd, bfd_section) |
3129 | - bfd_section_vma (abfd, bfd_section); | |
3130 | } | |
c906108c SS |
3131 | |
3132 | return pc; | |
3133 | } | |
3134 | ||
3135 | /* Function: overlay_mapped_address (PC, SECTION) | |
3136 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3137 | May be the same as PC. */ | |
3138 | ||
3139 | CORE_ADDR | |
714835d5 | 3140 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3141 | { |
714835d5 UW |
3142 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3143 | { | |
714835d5 | 3144 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3145 | |
714835d5 UW |
3146 | return pc + bfd_section_vma (abfd, bfd_section) |
3147 | - bfd_section_lma (abfd, bfd_section); | |
3148 | } | |
c906108c SS |
3149 | |
3150 | return pc; | |
3151 | } | |
3152 | ||
5417f6dc | 3153 | /* Function: symbol_overlayed_address |
c906108c SS |
3154 | Return one of two addresses (relative to the VMA or to the LMA), |
3155 | depending on whether the section is mapped or not. */ | |
3156 | ||
c5aa993b | 3157 | CORE_ADDR |
714835d5 | 3158 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3159 | { |
3160 | if (overlay_debugging) | |
3161 | { | |
c378eb4e | 3162 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3163 | if (section == 0) |
3164 | return address; | |
c378eb4e MS |
3165 | /* If the symbol's section is not an overlay, just return its |
3166 | address. */ | |
c906108c SS |
3167 | if (!section_is_overlay (section)) |
3168 | return address; | |
c378eb4e | 3169 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3170 | if (section_is_mapped (section)) |
3171 | return address; | |
3172 | /* | |
3173 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3174 | * then return its LOADED address rather than its vma address!! | |
3175 | */ | |
3176 | return overlay_unmapped_address (address, section); | |
3177 | } | |
3178 | return address; | |
3179 | } | |
3180 | ||
5417f6dc | 3181 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3182 | Return the best-match overlay section for PC: |
3183 | If PC matches a mapped overlay section's VMA, return that section. | |
3184 | Else if PC matches an unmapped section's VMA, return that section. | |
3185 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3186 | ||
714835d5 | 3187 | struct obj_section * |
fba45db2 | 3188 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3189 | { |
c906108c SS |
3190 | struct obj_section *osect, *best_match = NULL; |
3191 | ||
3192 | if (overlay_debugging) | |
b631e59b | 3193 | { |
2030c079 | 3194 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3195 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3196 | if (section_is_overlay (osect)) | |
3197 | { | |
3198 | if (pc_in_mapped_range (pc, osect)) | |
3199 | { | |
3200 | if (section_is_mapped (osect)) | |
3201 | return osect; | |
3202 | else | |
3203 | best_match = osect; | |
3204 | } | |
3205 | else if (pc_in_unmapped_range (pc, osect)) | |
3206 | best_match = osect; | |
3207 | } | |
b631e59b | 3208 | } |
714835d5 | 3209 | return best_match; |
c906108c SS |
3210 | } |
3211 | ||
3212 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3213 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3214 | currently marked as MAPPED, return that section. Else return NULL. */ |
3215 | ||
714835d5 | 3216 | struct obj_section * |
fba45db2 | 3217 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3218 | { |
c906108c SS |
3219 | struct obj_section *osect; |
3220 | ||
3221 | if (overlay_debugging) | |
b631e59b | 3222 | { |
2030c079 | 3223 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3224 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3225 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3226 | return osect; | |
b631e59b | 3227 | } |
c906108c SS |
3228 | |
3229 | return NULL; | |
3230 | } | |
3231 | ||
3232 | /* Function: list_overlays_command | |
c378eb4e | 3233 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3234 | |
5d3055ad | 3235 | static void |
2cf311eb | 3236 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3237 | { |
c5aa993b | 3238 | int nmapped = 0; |
c906108c SS |
3239 | struct obj_section *osect; |
3240 | ||
3241 | if (overlay_debugging) | |
b631e59b | 3242 | { |
2030c079 | 3243 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3244 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3245 | if (section_is_mapped (osect)) | |
3246 | { | |
3247 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3248 | const char *name; | |
3249 | bfd_vma lma, vma; | |
3250 | int size; | |
3251 | ||
3252 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3253 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3254 | size = bfd_get_section_size (osect->the_bfd_section); | |
3255 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3256 | ||
3257 | printf_filtered ("Section %s, loaded at ", name); | |
3258 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3259 | puts_filtered (" - "); | |
3260 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3261 | printf_filtered (", mapped at "); | |
3262 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3263 | puts_filtered (" - "); | |
3264 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3265 | puts_filtered ("\n"); | |
3266 | ||
3267 | nmapped++; | |
3268 | } | |
b631e59b | 3269 | } |
c906108c | 3270 | if (nmapped == 0) |
a3f17187 | 3271 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3272 | } |
3273 | ||
3274 | /* Function: map_overlay_command | |
3275 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3276 | ||
5d3055ad | 3277 | static void |
2cf311eb | 3278 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3279 | { |
c5aa993b | 3280 | struct obj_section *sec, *sec2; |
c906108c SS |
3281 | |
3282 | if (!overlay_debugging) | |
3e43a32a MS |
3283 | error (_("Overlay debugging not enabled. Use " |
3284 | "either the 'overlay auto' or\n" | |
3285 | "the 'overlay manual' command.")); | |
c906108c SS |
3286 | |
3287 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3288 | error (_("Argument required: name of an overlay section")); |
c906108c | 3289 | |
c378eb4e | 3290 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3291 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3292 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
3293 | if (!strcmp (bfd_section_name (obj_file->obfd, sec->the_bfd_section), | |
3294 | args)) | |
c5aa993b | 3295 | { |
3b9d3ac2 TT |
3296 | /* Now, check to see if the section is an overlay. */ |
3297 | if (!section_is_overlay (sec)) | |
3298 | continue; /* not an overlay section */ | |
3299 | ||
3300 | /* Mark the overlay as "mapped". */ | |
3301 | sec->ovly_mapped = 1; | |
3302 | ||
3303 | /* Next, make a pass and unmap any sections that are | |
3304 | overlapped by this new section: */ | |
2030c079 | 3305 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3306 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3307 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3308 | sec2)) | |
3309 | { | |
3310 | if (info_verbose) | |
3311 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
3312 | bfd_section_name (obj_file->obfd, | |
3313 | sec2->the_bfd_section)); | |
3314 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ | |
3315 | } | |
3316 | return; | |
c5aa993b | 3317 | } |
8a3fe4f8 | 3318 | error (_("No overlay section called %s"), args); |
c906108c SS |
3319 | } |
3320 | ||
3321 | /* Function: unmap_overlay_command | |
5417f6dc | 3322 | Mark the overlay section as unmapped |
c906108c SS |
3323 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3324 | ||
5d3055ad | 3325 | static void |
2cf311eb | 3326 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3327 | { |
7a270e0c | 3328 | struct obj_section *sec = NULL; |
c906108c SS |
3329 | |
3330 | if (!overlay_debugging) | |
3e43a32a MS |
3331 | error (_("Overlay debugging not enabled. " |
3332 | "Use either the 'overlay auto' or\n" | |
3333 | "the 'overlay manual' command.")); | |
c906108c SS |
3334 | |
3335 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3336 | error (_("Argument required: name of an overlay section")); |
c906108c | 3337 | |
c378eb4e | 3338 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3339 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3340 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
3341 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
3342 | { | |
3343 | if (!sec->ovly_mapped) | |
3344 | error (_("Section %s is not mapped"), args); | |
3345 | sec->ovly_mapped = 0; | |
3346 | return; | |
3347 | } | |
8a3fe4f8 | 3348 | error (_("No overlay section called %s"), args); |
c906108c SS |
3349 | } |
3350 | ||
3351 | /* Function: overlay_auto_command | |
3352 | A utility command to turn on overlay debugging. | |
c378eb4e | 3353 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3354 | |
3355 | static void | |
2cf311eb | 3356 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3357 | { |
d874f1e2 | 3358 | overlay_debugging = ovly_auto; |
1900040c | 3359 | enable_overlay_breakpoints (); |
c906108c | 3360 | if (info_verbose) |
a3f17187 | 3361 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3362 | } |
3363 | ||
3364 | /* Function: overlay_manual_command | |
3365 | A utility command to turn on overlay debugging. | |
c378eb4e | 3366 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3367 | |
3368 | static void | |
2cf311eb | 3369 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3370 | { |
d874f1e2 | 3371 | overlay_debugging = ovly_on; |
1900040c | 3372 | disable_overlay_breakpoints (); |
c906108c | 3373 | if (info_verbose) |
a3f17187 | 3374 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3375 | } |
3376 | ||
3377 | /* Function: overlay_off_command | |
3378 | A utility command to turn on overlay debugging. | |
c378eb4e | 3379 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3380 | |
3381 | static void | |
2cf311eb | 3382 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3383 | { |
d874f1e2 | 3384 | overlay_debugging = ovly_off; |
1900040c | 3385 | disable_overlay_breakpoints (); |
c906108c | 3386 | if (info_verbose) |
a3f17187 | 3387 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3388 | } |
3389 | ||
3390 | static void | |
2cf311eb | 3391 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3392 | { |
e17c207e UW |
3393 | struct gdbarch *gdbarch = get_current_arch (); |
3394 | ||
3395 | if (gdbarch_overlay_update_p (gdbarch)) | |
3396 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3397 | else |
8a3fe4f8 | 3398 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3399 | } |
3400 | ||
3401 | /* Function: overlay_command | |
c378eb4e | 3402 | A place-holder for a mis-typed command. */ |
c906108c | 3403 | |
c378eb4e | 3404 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3405 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3406 | |
3407 | static void | |
981a3fb3 | 3408 | overlay_command (const char *args, int from_tty) |
c906108c | 3409 | { |
c5aa993b | 3410 | printf_unfiltered |
c906108c | 3411 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3412 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3413 | } |
3414 | ||
c906108c SS |
3415 | /* Target Overlays for the "Simplest" overlay manager: |
3416 | ||
5417f6dc RM |
3417 | This is GDB's default target overlay layer. It works with the |
3418 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3419 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3420 | so targets that use a different runtime overlay manager can |
c906108c SS |
3421 | substitute their own overlay_update function and take over the |
3422 | function pointer. | |
3423 | ||
3424 | The overlay_update function pokes around in the target's data structures | |
3425 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3426 | this information. | |
3427 | ||
3428 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3429 | unsigned _novlys; /# number of overlay sections #/ |
3430 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3431 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3432 | {..., ..., ..., ...}, |
3433 | } | |
3434 | unsigned _novly_regions; /# number of overlay regions #/ | |
3435 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3436 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3437 | {..., ..., ...}, |
3438 | } | |
c906108c SS |
3439 | These functions will attempt to update GDB's mappedness state in the |
3440 | symbol section table, based on the target's mappedness state. | |
3441 | ||
3442 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3443 | attempt to detect when the cached copy is invalidated. The main | |
3444 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3445 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3446 | the target (whenever possible). */ |
c906108c SS |
3447 | |
3448 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3449 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3450 | static unsigned cache_novlys = 0; |
c906108c | 3451 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3452 | enum ovly_index |
3453 | { | |
438e1e42 | 3454 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3455 | }; |
c906108c | 3456 | |
c378eb4e | 3457 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3458 | |
c906108c | 3459 | static void |
fba45db2 | 3460 | simple_free_overlay_table (void) |
c906108c SS |
3461 | { |
3462 | if (cache_ovly_table) | |
b8c9b27d | 3463 | xfree (cache_ovly_table); |
c5aa993b | 3464 | cache_novlys = 0; |
c906108c SS |
3465 | cache_ovly_table = NULL; |
3466 | cache_ovly_table_base = 0; | |
3467 | } | |
3468 | ||
9216df95 | 3469 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3470 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3471 | |
c906108c | 3472 | static void |
9216df95 | 3473 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3474 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3475 | { |
c378eb4e | 3476 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3477 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3478 | int i; |
c906108c | 3479 | |
9216df95 | 3480 | read_memory (memaddr, buf, len * size); |
c906108c | 3481 | for (i = 0; i < len; i++) |
e17a4113 | 3482 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3483 | } |
3484 | ||
3485 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3486 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3487 | |
c5aa993b | 3488 | static int |
fba45db2 | 3489 | simple_read_overlay_table (void) |
c906108c | 3490 | { |
3b7344d5 | 3491 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3492 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3493 | struct gdbarch *gdbarch; |
3494 | int word_size; | |
e17a4113 | 3495 | enum bfd_endian byte_order; |
c906108c SS |
3496 | |
3497 | simple_free_overlay_table (); | |
9b27852e | 3498 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3499 | if (! novlys_msym.minsym) |
c906108c | 3500 | { |
8a3fe4f8 | 3501 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3502 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3503 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3504 | return 0; |
c906108c | 3505 | } |
0d43edd1 | 3506 | |
7c7b6655 TT |
3507 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3508 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3509 | { |
8a3fe4f8 | 3510 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3511 | "`_ovly_table' array\n" |
8a3fe4f8 | 3512 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3513 | return 0; |
3514 | } | |
3515 | ||
7c7b6655 | 3516 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3517 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3518 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3519 | |
77e371c0 TT |
3520 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3521 | 4, byte_order); | |
0d43edd1 | 3522 | cache_ovly_table |
224c3ddb | 3523 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3524 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3525 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3526 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3527 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3528 | |
c5aa993b | 3529 | return 1; /* SUCCESS */ |
c906108c SS |
3530 | } |
3531 | ||
5417f6dc | 3532 | /* Function: simple_overlay_update_1 |
c906108c SS |
3533 | A helper function for simple_overlay_update. Assuming a cached copy |
3534 | of _ovly_table exists, look through it to find an entry whose vma, | |
3535 | lma and size match those of OSECT. Re-read the entry and make sure | |
3536 | it still matches OSECT (else the table may no longer be valid). | |
3537 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3538 | success, 0 for failure. */ | |
3539 | ||
3540 | static int | |
fba45db2 | 3541 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3542 | { |
764c99c1 | 3543 | int i; |
fbd35540 | 3544 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3545 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3546 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3547 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3548 | |
c906108c | 3549 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3550 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3551 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3552 | { |
9216df95 UW |
3553 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3554 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3555 | 4, word_size, byte_order); |
fbd35540 | 3556 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3557 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3558 | { |
3559 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3560 | return 1; | |
3561 | } | |
c378eb4e | 3562 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3563 | return 0; |
3564 | } | |
3565 | return 0; | |
3566 | } | |
3567 | ||
3568 | /* Function: simple_overlay_update | |
5417f6dc RM |
3569 | If OSECT is NULL, then update all sections' mapped state |
3570 | (after re-reading the entire target _ovly_table). | |
3571 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3572 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3573 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3574 | re-read the entire cache, and go ahead and update all sections. */ |
3575 | ||
1c772458 | 3576 | void |
fba45db2 | 3577 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3578 | { |
c378eb4e | 3579 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3580 | if (osect) |
c378eb4e | 3581 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3582 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3583 | { |
3584 | /* Does its cached location match what's currently in the | |
3585 | symtab? */ | |
3b7344d5 | 3586 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3587 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3588 | ||
3b7344d5 | 3589 | if (minsym.minsym == NULL) |
9cc89665 MS |
3590 | error (_("Error reading inferior's overlay table: couldn't " |
3591 | "find `_ovly_table' array\n" | |
3592 | "in inferior. Use `overlay manual' mode.")); | |
3593 | ||
77e371c0 | 3594 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3595 | /* Then go ahead and try to look up this single section in |
3596 | the cache. */ | |
3597 | if (simple_overlay_update_1 (osect)) | |
3598 | /* Found it! We're done. */ | |
3599 | return; | |
3600 | } | |
c906108c SS |
3601 | |
3602 | /* Cached table no good: need to read the entire table anew. | |
3603 | Or else we want all the sections, in which case it's actually | |
3604 | more efficient to read the whole table in one block anyway. */ | |
3605 | ||
0d43edd1 JB |
3606 | if (! simple_read_overlay_table ()) |
3607 | return; | |
3608 | ||
c378eb4e | 3609 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3610 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3611 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3612 | if (section_is_overlay (osect)) | |
3613 | { | |
3614 | int i; | |
3615 | asection *bsect = osect->the_bfd_section; | |
3616 | ||
3617 | for (i = 0; i < cache_novlys; i++) | |
3618 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) | |
3619 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) | |
3620 | { /* obj_section matches i'th entry in ovly_table. */ | |
3621 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3622 | break; /* finished with inner for loop: break out. */ | |
3623 | } | |
3624 | } | |
c906108c SS |
3625 | } |
3626 | ||
086df311 DJ |
3627 | /* Set the output sections and output offsets for section SECTP in |
3628 | ABFD. The relocation code in BFD will read these offsets, so we | |
3629 | need to be sure they're initialized. We map each section to itself, | |
3630 | with no offset; this means that SECTP->vma will be honored. */ | |
3631 | ||
3632 | static void | |
3633 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3634 | { | |
3635 | sectp->output_section = sectp; | |
3636 | sectp->output_offset = 0; | |
3637 | } | |
3638 | ||
ac8035ab TG |
3639 | /* Default implementation for sym_relocate. */ |
3640 | ||
ac8035ab TG |
3641 | bfd_byte * |
3642 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3643 | bfd_byte *buf) | |
3644 | { | |
3019eac3 DE |
3645 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3646 | DWO file. */ | |
3647 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3648 | |
3649 | /* We're only interested in sections with relocation | |
3650 | information. */ | |
3651 | if ((sectp->flags & SEC_RELOC) == 0) | |
3652 | return NULL; | |
3653 | ||
3654 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3655 | all sections begin at 0. */ | |
3656 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3657 | ||
3658 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3659 | } | |
3660 | ||
086df311 DJ |
3661 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3662 | contents are stored in BUF if it is non-NULL, or returned in a | |
3663 | malloc'd buffer otherwise. | |
3664 | ||
3665 | For some platforms and debug info formats, shared libraries contain | |
3666 | relocations against the debug sections (particularly for DWARF-2; | |
3667 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3668 | the version of the linker in use). Also, ELF object files naturally | |
3669 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3670 | the relocations in order to get the locations of symbols correct. |
3671 | Another example that may require relocation processing, is the | |
3672 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3673 | debug section. */ | |
086df311 DJ |
3674 | |
3675 | bfd_byte * | |
ac8035ab TG |
3676 | symfile_relocate_debug_section (struct objfile *objfile, |
3677 | asection *sectp, bfd_byte *buf) | |
086df311 | 3678 | { |
ac8035ab | 3679 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3680 | |
ac8035ab | 3681 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3682 | } |
c906108c | 3683 | |
31d99776 DJ |
3684 | struct symfile_segment_data * |
3685 | get_symfile_segment_data (bfd *abfd) | |
3686 | { | |
00b5771c | 3687 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3688 | |
3689 | if (sf == NULL) | |
3690 | return NULL; | |
3691 | ||
3692 | return sf->sym_segments (abfd); | |
3693 | } | |
3694 | ||
3695 | void | |
3696 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3697 | { | |
3698 | xfree (data->segment_bases); | |
3699 | xfree (data->segment_sizes); | |
3700 | xfree (data->segment_info); | |
3701 | xfree (data); | |
3702 | } | |
3703 | ||
28c32713 JB |
3704 | /* Given: |
3705 | - DATA, containing segment addresses from the object file ABFD, and | |
3706 | the mapping from ABFD's sections onto the segments that own them, | |
3707 | and | |
3708 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3709 | segment addresses reported by the target, | |
3710 | store the appropriate offsets for each section in OFFSETS. | |
3711 | ||
3712 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3713 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3714 | ||
8d385431 DJ |
3715 | If there are more entries, then ignore the extra. The target may |
3716 | not be able to distinguish between an empty data segment and a | |
3717 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3718 | |
31d99776 | 3719 | int |
3189cb12 DE |
3720 | symfile_map_offsets_to_segments (bfd *abfd, |
3721 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3722 | struct section_offsets *offsets, |
3723 | int num_segment_bases, | |
3724 | const CORE_ADDR *segment_bases) | |
3725 | { | |
3726 | int i; | |
3727 | asection *sect; | |
3728 | ||
28c32713 JB |
3729 | /* It doesn't make sense to call this function unless you have some |
3730 | segment base addresses. */ | |
202b96c1 | 3731 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3732 | |
31d99776 DJ |
3733 | /* If we do not have segment mappings for the object file, we |
3734 | can not relocate it by segments. */ | |
3735 | gdb_assert (data != NULL); | |
3736 | gdb_assert (data->num_segments > 0); | |
3737 | ||
31d99776 DJ |
3738 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3739 | { | |
31d99776 DJ |
3740 | int which = data->segment_info[i]; |
3741 | ||
28c32713 JB |
3742 | gdb_assert (0 <= which && which <= data->num_segments); |
3743 | ||
3744 | /* Don't bother computing offsets for sections that aren't | |
3745 | loaded as part of any segment. */ | |
3746 | if (! which) | |
3747 | continue; | |
3748 | ||
3749 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3750 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3751 | if (which > num_segment_bases) |
28c32713 | 3752 | which = num_segment_bases; |
31d99776 | 3753 | |
28c32713 JB |
3754 | offsets->offsets[i] = (segment_bases[which - 1] |
3755 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3756 | } |
3757 | ||
3758 | return 1; | |
3759 | } | |
3760 | ||
3761 | static void | |
3762 | symfile_find_segment_sections (struct objfile *objfile) | |
3763 | { | |
3764 | bfd *abfd = objfile->obfd; | |
3765 | int i; | |
3766 | asection *sect; | |
3767 | struct symfile_segment_data *data; | |
3768 | ||
3769 | data = get_symfile_segment_data (objfile->obfd); | |
3770 | if (data == NULL) | |
3771 | return; | |
3772 | ||
3773 | if (data->num_segments != 1 && data->num_segments != 2) | |
3774 | { | |
3775 | free_symfile_segment_data (data); | |
3776 | return; | |
3777 | } | |
3778 | ||
3779 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3780 | { | |
31d99776 DJ |
3781 | int which = data->segment_info[i]; |
3782 | ||
3783 | if (which == 1) | |
3784 | { | |
3785 | if (objfile->sect_index_text == -1) | |
3786 | objfile->sect_index_text = sect->index; | |
3787 | ||
3788 | if (objfile->sect_index_rodata == -1) | |
3789 | objfile->sect_index_rodata = sect->index; | |
3790 | } | |
3791 | else if (which == 2) | |
3792 | { | |
3793 | if (objfile->sect_index_data == -1) | |
3794 | objfile->sect_index_data = sect->index; | |
3795 | ||
3796 | if (objfile->sect_index_bss == -1) | |
3797 | objfile->sect_index_bss = sect->index; | |
3798 | } | |
3799 | } | |
3800 | ||
3801 | free_symfile_segment_data (data); | |
3802 | } | |
3803 | ||
76ad5e1e NB |
3804 | /* Listen for free_objfile events. */ |
3805 | ||
3806 | static void | |
3807 | symfile_free_objfile (struct objfile *objfile) | |
3808 | { | |
c33b2f12 MM |
3809 | /* Remove the target sections owned by this objfile. */ |
3810 | if (objfile != NULL) | |
76ad5e1e NB |
3811 | remove_target_sections ((void *) objfile); |
3812 | } | |
3813 | ||
540c2971 DE |
3814 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3815 | Expand all symtabs that match the specified criteria. | |
3816 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3817 | ||
3818 | void | |
14bc53a8 PA |
3819 | expand_symtabs_matching |
3820 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3821 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3822 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3823 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3824 | enum search_domain kind) | |
540c2971 | 3825 | { |
2030c079 | 3826 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3827 | { |
3828 | if (objfile->sf) | |
3829 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
3830 | lookup_name, | |
3831 | symbol_matcher, | |
3832 | expansion_notify, kind); | |
3833 | } | |
540c2971 DE |
3834 | } |
3835 | ||
3836 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3837 | Map function FUN over every file. | |
3838 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3839 | ||
3840 | void | |
bb4142cf DE |
3841 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3842 | int need_fullname) | |
540c2971 | 3843 | { |
2030c079 | 3844 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3845 | { |
3846 | if (objfile->sf) | |
3847 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3848 | need_fullname); | |
3849 | } | |
540c2971 DE |
3850 | } |
3851 | ||
32fa66eb SM |
3852 | #if GDB_SELF_TEST |
3853 | ||
3854 | namespace selftests { | |
3855 | namespace filename_language { | |
3856 | ||
32fa66eb SM |
3857 | static void test_filename_language () |
3858 | { | |
3859 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3860 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3861 | |
3862 | /* Test deducing an unknown extension. */ | |
3863 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3864 | SELF_CHECK (lang == language_unknown); | |
3865 | ||
3866 | /* Test deducing a known extension. */ | |
3867 | lang = deduce_language_from_filename ("myfile.c"); | |
3868 | SELF_CHECK (lang == language_c); | |
3869 | ||
3870 | /* Test adding a new extension using the internal API. */ | |
3871 | add_filename_language (".blah", language_pascal); | |
3872 | lang = deduce_language_from_filename ("myfile.blah"); | |
3873 | SELF_CHECK (lang == language_pascal); | |
3874 | } | |
3875 | ||
3876 | static void | |
3877 | test_set_ext_lang_command () | |
3878 | { | |
3879 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3880 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3881 | |
3882 | /* Confirm that the .hello extension is not known. */ | |
3883 | language lang = deduce_language_from_filename ("cake.hello"); | |
3884 | SELF_CHECK (lang == language_unknown); | |
3885 | ||
3886 | /* Test adding a new extension using the CLI command. */ | |
b02f78f9 | 3887 | auto args_holder = make_unique_xstrdup (".hello rust"); |
32fa66eb SM |
3888 | ext_args = args_holder.get (); |
3889 | set_ext_lang_command (NULL, 1, NULL); | |
3890 | ||
3891 | lang = deduce_language_from_filename ("cake.hello"); | |
3892 | SELF_CHECK (lang == language_rust); | |
3893 | ||
3894 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3895 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3896 | args_holder.reset (xstrdup (".hello pascal")); |
3897 | ext_args = args_holder.get (); | |
3898 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3899 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3900 | |
3901 | lang = deduce_language_from_filename ("cake.hello"); | |
3902 | SELF_CHECK (lang == language_pascal); | |
3903 | SELF_CHECK (size_before == size_after); | |
3904 | } | |
3905 | ||
3906 | } /* namespace filename_language */ | |
3907 | } /* namespace selftests */ | |
3908 | ||
3909 | #endif /* GDB_SELF_TEST */ | |
3910 | ||
c906108c | 3911 | void |
fba45db2 | 3912 | _initialize_symfile (void) |
c906108c SS |
3913 | { |
3914 | struct cmd_list_element *c; | |
c5aa993b | 3915 | |
76727919 | 3916 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3917 | |
97cbe998 | 3918 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3919 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3920 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3921 | faster.\n\ |
3922 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3923 | symbolic debug information." | |
8ca2f0b9 | 3924 | |
1a966eab AC |
3925 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3926 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3927 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3928 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3929 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3930 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3931 | set_cmd_completer (c, filename_completer); |
c906108c | 3932 | |
1a966eab | 3933 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3934 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3935 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3936 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3937 | ADDR is the starting address of the file's text.\n\ |
3938 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3939 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3940 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3941 | OFF is an optional offset which is added to the default load addresses\n\ | |
3942 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3943 | READNOW_READNEVER_HELP), |
c906108c | 3944 | &cmdlist); |
5ba2abeb | 3945 | set_cmd_completer (c, filename_completer); |
c906108c | 3946 | |
63644780 NB |
3947 | c = add_cmd ("remove-symbol-file", class_files, |
3948 | remove_symbol_file_command, _("\ | |
3949 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3950 | Usage: remove-symbol-file FILENAME\n\ | |
3951 | remove-symbol-file -a ADDRESS\n\ | |
3952 | The file to remove can be identified by its filename or by an address\n\ | |
3953 | that lies within the boundaries of this symbol file in memory."), | |
3954 | &cmdlist); | |
3955 | ||
1a966eab | 3956 | c = add_cmd ("load", class_files, load_command, _("\ |
590042fc PW |
3957 | Dynamically load FILE into the running program.\n\ |
3958 | FILE symbols are recorded for access from GDB.\n\ | |
8ca2f0b9 | 3959 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3960 | An optional load OFFSET may also be given as a literal address.\n\ |
3961 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3962 | on its own."), &cmdlist); |
5ba2abeb | 3963 | set_cmd_completer (c, filename_completer); |
c906108c | 3964 | |
c5aa993b | 3965 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3966 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3967 | "overlay ", 0, &cmdlist); |
3968 | ||
3969 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3970 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3971 | ||
c5aa993b | 3972 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3973 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3974 | |
c5aa993b | 3975 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3976 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3977 | |
c5aa993b | 3978 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3979 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3980 | |
c5aa993b | 3981 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3982 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3983 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3984 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3985 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3986 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3987 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3988 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3989 | |
3990 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3991 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3992 | &ext_args, _("\ | |
3993 | Set mapping between filename extension and source language."), _("\ | |
3994 | Show mapping between filename extension and source language."), _("\ | |
3995 | Usage: set extension-language .foo bar"), | |
3996 | set_ext_lang_command, | |
920d2a44 | 3997 | show_ext_args, |
26c41df3 | 3998 | &setlist, &showlist); |
c906108c | 3999 | |
c5aa993b | 4000 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4001 | _("All filename extensions associated with a source language.")); |
917317f4 | 4002 | |
525226b5 AC |
4003 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4004 | &debug_file_directory, _("\ | |
24ddea62 JK |
4005 | Set the directories where separate debug symbols are searched for."), _("\ |
4006 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
4007 | Separate debug symbols are first searched for in the same\n\ |
4008 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4009 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 4010 | each global debug-file-directory component prepended."), |
525226b5 | 4011 | NULL, |
920d2a44 | 4012 | show_debug_file_directory, |
525226b5 | 4013 | &setlist, &showlist); |
770e7fc7 DE |
4014 | |
4015 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
4016 | print_symbol_loading_enums, &print_symbol_loading, | |
4017 | _("\ | |
4018 | Set printing of symbol loading messages."), _("\ | |
4019 | Show printing of symbol loading messages."), _("\ | |
4020 | off == turn all messages off\n\ | |
4021 | brief == print messages for the executable,\n\ | |
4022 | and brief messages for shared libraries\n\ | |
4023 | full == print messages for the executable,\n\ | |
4024 | and messages for each shared library."), | |
4025 | NULL, | |
4026 | NULL, | |
4027 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
4028 | |
4029 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
4030 | &separate_debug_file_debug, _("\ | |
4031 | Set printing of separate debug info file search debug."), _("\ | |
4032 | Show printing of separate debug info file search debug."), _("\ | |
4033 | When on, GDB prints the searched locations while looking for separate debug \ | |
4034 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4035 | |
4036 | #if GDB_SELF_TEST | |
4037 | selftests::register_test | |
4038 | ("filename_language", selftests::filename_language::test_filename_language); | |
4039 | selftests::register_test | |
4040 | ("set_ext_lang_command", | |
4041 | selftests::filename_language::test_set_ext_lang_command); | |
4042 | #endif | |
c906108c | 4043 | } |