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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" |
0efef640 | 59 | #include "common/byte-vector.h" |
0747795c | 60 | #include "common/selftest.h" |
47fd17cd | 61 | #include "cli/cli-style.h" |
286526c1 | 62 | #include "common/forward-scope-exit.h" |
c906108c | 63 | |
c906108c SS |
64 | #include <sys/types.h> |
65 | #include <fcntl.h> | |
53ce3c39 | 66 | #include <sys/stat.h> |
c906108c | 67 | #include <ctype.h> |
dcb07cfa | 68 | #include <chrono> |
37e136b1 | 69 | #include <algorithm> |
c906108c | 70 | |
ccefe4c4 | 71 | #include "psymtab.h" |
c906108c | 72 | |
3e43a32a MS |
73 | int (*deprecated_ui_load_progress_hook) (const char *section, |
74 | unsigned long num); | |
9a4105ab | 75 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
76 | unsigned long section_sent, |
77 | unsigned long section_size, | |
78 | unsigned long total_sent, | |
c2d11a7d | 79 | unsigned long total_size); |
769d7dc4 AC |
80 | void (*deprecated_pre_add_symbol_hook) (const char *); |
81 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 82 | |
286526c1 TT |
83 | using clear_symtab_users_cleanup |
84 | = FORWARD_SCOPE_EXIT (clear_symtab_users); | |
74b7792f | 85 | |
c378eb4e MS |
86 | /* Global variables owned by this file. */ |
87 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 88 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 89 | |
c378eb4e | 90 | /* Functions this file defines. */ |
c906108c | 91 | |
ecf45d2c | 92 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 93 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 94 | |
00b5771c | 95 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 96 | |
a14ed312 | 97 | static void overlay_invalidate_all (void); |
c906108c | 98 | |
a14ed312 | 99 | static void simple_free_overlay_table (void); |
c906108c | 100 | |
e17a4113 UW |
101 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
102 | enum bfd_endian); | |
c906108c | 103 | |
a14ed312 | 104 | static int simple_read_overlay_table (void); |
c906108c | 105 | |
a14ed312 | 106 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 107 | |
31d99776 DJ |
108 | static void symfile_find_segment_sections (struct objfile *objfile); |
109 | ||
c906108c SS |
110 | /* List of all available sym_fns. On gdb startup, each object file reader |
111 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 112 | prepared to read. */ |
c906108c | 113 | |
905014d7 | 114 | struct registered_sym_fns |
c256e171 | 115 | { |
905014d7 SM |
116 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
117 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
118 | {} | |
119 | ||
c256e171 DE |
120 | /* BFD flavour that we handle. */ |
121 | enum bfd_flavour sym_flavour; | |
122 | ||
123 | /* The "vtable" of symbol functions. */ | |
124 | const struct sym_fns *sym_fns; | |
905014d7 | 125 | }; |
c256e171 | 126 | |
905014d7 | 127 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 128 | |
770e7fc7 DE |
129 | /* Values for "set print symbol-loading". */ |
130 | ||
131 | const char print_symbol_loading_off[] = "off"; | |
132 | const char print_symbol_loading_brief[] = "brief"; | |
133 | const char print_symbol_loading_full[] = "full"; | |
134 | static const char *print_symbol_loading_enums[] = | |
135 | { | |
136 | print_symbol_loading_off, | |
137 | print_symbol_loading_brief, | |
138 | print_symbol_loading_full, | |
139 | NULL | |
140 | }; | |
141 | static const char *print_symbol_loading = print_symbol_loading_full; | |
142 | ||
b7209cb4 FF |
143 | /* If non-zero, shared library symbols will be added automatically |
144 | when the inferior is created, new libraries are loaded, or when | |
145 | attaching to the inferior. This is almost always what users will | |
146 | want to have happen; but for very large programs, the startup time | |
147 | will be excessive, and so if this is a problem, the user can clear | |
148 | this flag and then add the shared library symbols as needed. Note | |
149 | that there is a potential for confusion, since if the shared | |
c906108c | 150 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 151 | report all the functions that are actually present. */ |
c906108c SS |
152 | |
153 | int auto_solib_add = 1; | |
c906108c | 154 | \f |
c5aa993b | 155 | |
770e7fc7 DE |
156 | /* Return non-zero if symbol-loading messages should be printed. |
157 | FROM_TTY is the standard from_tty argument to gdb commands. | |
158 | If EXEC is non-zero the messages are for the executable. | |
159 | Otherwise, messages are for shared libraries. | |
160 | If FULL is non-zero then the caller is printing a detailed message. | |
161 | E.g., the message includes the shared library name. | |
162 | Otherwise, the caller is printing a brief "summary" message. */ | |
163 | ||
164 | int | |
165 | print_symbol_loading_p (int from_tty, int exec, int full) | |
166 | { | |
167 | if (!from_tty && !info_verbose) | |
168 | return 0; | |
169 | ||
170 | if (exec) | |
171 | { | |
172 | /* We don't check FULL for executables, there are few such | |
173 | messages, therefore brief == full. */ | |
174 | return print_symbol_loading != print_symbol_loading_off; | |
175 | } | |
176 | if (full) | |
177 | return print_symbol_loading == print_symbol_loading_full; | |
178 | return print_symbol_loading == print_symbol_loading_brief; | |
179 | } | |
180 | ||
0d14a781 | 181 | /* True if we are reading a symbol table. */ |
c906108c SS |
182 | |
183 | int currently_reading_symtab = 0; | |
184 | ||
ccefe4c4 TT |
185 | /* Increment currently_reading_symtab and return a cleanup that can be |
186 | used to decrement it. */ | |
3b7bacac | 187 | |
c83dd867 | 188 | scoped_restore_tmpl<int> |
ccefe4c4 | 189 | increment_reading_symtab (void) |
c906108c | 190 | { |
c83dd867 TT |
191 | gdb_assert (currently_reading_symtab >= 0); |
192 | return make_scoped_restore (¤tly_reading_symtab, | |
193 | currently_reading_symtab + 1); | |
c906108c SS |
194 | } |
195 | ||
5417f6dc RM |
196 | /* Remember the lowest-addressed loadable section we've seen. |
197 | This function is called via bfd_map_over_sections. | |
c906108c SS |
198 | |
199 | In case of equal vmas, the section with the largest size becomes the | |
200 | lowest-addressed loadable section. | |
201 | ||
202 | If the vmas and sizes are equal, the last section is considered the | |
203 | lowest-addressed loadable section. */ | |
204 | ||
205 | void | |
4efb68b1 | 206 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 207 | { |
c5aa993b | 208 | asection **lowest = (asection **) obj; |
c906108c | 209 | |
eb73e134 | 210 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
211 | return; |
212 | if (!*lowest) | |
213 | *lowest = sect; /* First loadable section */ | |
214 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
215 | *lowest = sect; /* A lower loadable section */ | |
216 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
217 | && (bfd_section_size (abfd, (*lowest)) | |
218 | <= bfd_section_size (abfd, sect))) | |
219 | *lowest = sect; | |
220 | } | |
221 | ||
62557bbc | 222 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 223 | an existing section table. */ |
62557bbc | 224 | |
37e136b1 | 225 | section_addr_info |
0542c86d PA |
226 | build_section_addr_info_from_section_table (const struct target_section *start, |
227 | const struct target_section *end) | |
62557bbc | 228 | { |
0542c86d | 229 | const struct target_section *stp; |
62557bbc | 230 | |
37e136b1 | 231 | section_addr_info sap; |
62557bbc | 232 | |
37e136b1 | 233 | for (stp = start; stp != end; stp++) |
62557bbc | 234 | { |
2b2848e2 DE |
235 | struct bfd_section *asect = stp->the_bfd_section; |
236 | bfd *abfd = asect->owner; | |
237 | ||
238 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
37e136b1 TT |
239 | && sap.size () < end - start) |
240 | sap.emplace_back (stp->addr, | |
241 | bfd_section_name (abfd, asect), | |
242 | gdb_bfd_section_index (abfd, asect)); | |
62557bbc KB |
243 | } |
244 | ||
245 | return sap; | |
246 | } | |
247 | ||
82ccf5a5 | 248 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 249 | |
37e136b1 | 250 | static section_addr_info |
82ccf5a5 | 251 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 252 | { |
089b4803 TG |
253 | struct bfd_section *sec; |
254 | ||
37e136b1 TT |
255 | section_addr_info sap; |
256 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
82ccf5a5 | 257 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) |
37e136b1 TT |
258 | sap.emplace_back (bfd_get_section_vma (abfd, sec), |
259 | bfd_get_section_name (abfd, sec), | |
260 | gdb_bfd_section_index (abfd, sec)); | |
d76488d8 | 261 | |
089b4803 TG |
262 | return sap; |
263 | } | |
264 | ||
82ccf5a5 JK |
265 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
266 | ||
37e136b1 | 267 | section_addr_info |
82ccf5a5 JK |
268 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
269 | { | |
82ccf5a5 JK |
270 | int i; |
271 | ||
272 | /* Before reread_symbols gets rewritten it is not safe to call: | |
273 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
274 | */ | |
37e136b1 TT |
275 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
276 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 277 | { |
37e136b1 | 278 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 279 | |
37e136b1 | 280 | sap[i].addr += objfile->section_offsets->offsets[sectindex]; |
82ccf5a5 JK |
281 | } |
282 | return sap; | |
283 | } | |
62557bbc | 284 | |
e8289572 | 285 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 286 | |
e8289572 JB |
287 | static void |
288 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 289 | { |
e8289572 | 290 | asection *sect; |
c906108c | 291 | int i; |
5417f6dc | 292 | |
b8fbeb18 | 293 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 294 | if (sect) |
b8fbeb18 EZ |
295 | objfile->sect_index_text = sect->index; |
296 | ||
297 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 298 | if (sect) |
b8fbeb18 EZ |
299 | objfile->sect_index_data = sect->index; |
300 | ||
301 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 302 | if (sect) |
b8fbeb18 EZ |
303 | objfile->sect_index_bss = sect->index; |
304 | ||
305 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 306 | if (sect) |
b8fbeb18 EZ |
307 | objfile->sect_index_rodata = sect->index; |
308 | ||
bbcd32ad FF |
309 | /* This is where things get really weird... We MUST have valid |
310 | indices for the various sect_index_* members or gdb will abort. | |
311 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
312 | accomodate that. First, check for a file with the standard |
313 | one or two segments. */ | |
314 | ||
315 | symfile_find_segment_sections (objfile); | |
316 | ||
317 | /* Except when explicitly adding symbol files at some address, | |
318 | section_offsets contains nothing but zeros, so it doesn't matter | |
319 | which slot in section_offsets the individual sect_index_* members | |
320 | index into. So if they are all zero, it is safe to just point | |
321 | all the currently uninitialized indices to the first slot. But | |
322 | beware: if this is the main executable, it may be relocated | |
323 | later, e.g. by the remote qOffsets packet, and then this will | |
324 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
325 | |
326 | for (i = 0; i < objfile->num_sections; i++) | |
327 | { | |
328 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
329 | { | |
330 | break; | |
331 | } | |
332 | } | |
333 | if (i == objfile->num_sections) | |
334 | { | |
335 | if (objfile->sect_index_text == -1) | |
336 | objfile->sect_index_text = 0; | |
337 | if (objfile->sect_index_data == -1) | |
338 | objfile->sect_index_data = 0; | |
339 | if (objfile->sect_index_bss == -1) | |
340 | objfile->sect_index_bss = 0; | |
341 | if (objfile->sect_index_rodata == -1) | |
342 | objfile->sect_index_rodata = 0; | |
343 | } | |
b8fbeb18 | 344 | } |
c906108c | 345 | |
c1bd25fd DJ |
346 | /* The arguments to place_section. */ |
347 | ||
348 | struct place_section_arg | |
349 | { | |
350 | struct section_offsets *offsets; | |
351 | CORE_ADDR lowest; | |
352 | }; | |
353 | ||
354 | /* Find a unique offset to use for loadable section SECT if | |
355 | the user did not provide an offset. */ | |
356 | ||
2c0b251b | 357 | static void |
c1bd25fd DJ |
358 | place_section (bfd *abfd, asection *sect, void *obj) |
359 | { | |
19ba03f4 | 360 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
361 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
362 | int done; | |
3bd72c6f | 363 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 364 | |
2711e456 DJ |
365 | /* We are only interested in allocated sections. */ |
366 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
367 | return; |
368 | ||
369 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 370 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
371 | return; |
372 | ||
373 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
374 | start_addr = (arg->lowest + align - 1) & -align; |
375 | ||
c1bd25fd DJ |
376 | do { |
377 | asection *cur_sec; | |
c1bd25fd | 378 | |
c1bd25fd DJ |
379 | done = 1; |
380 | ||
381 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
382 | { | |
383 | int indx = cur_sec->index; | |
c1bd25fd DJ |
384 | |
385 | /* We don't need to compare against ourself. */ | |
386 | if (cur_sec == sect) | |
387 | continue; | |
388 | ||
2711e456 DJ |
389 | /* We can only conflict with allocated sections. */ |
390 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
391 | continue; |
392 | ||
393 | /* If the section offset is 0, either the section has not been placed | |
394 | yet, or it was the lowest section placed (in which case LOWEST | |
395 | will be past its end). */ | |
396 | if (offsets[indx] == 0) | |
397 | continue; | |
398 | ||
399 | /* If this section would overlap us, then we must move up. */ | |
400 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
401 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
402 | { | |
403 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
404 | start_addr = (start_addr + align - 1) & -align; | |
405 | done = 0; | |
3bd72c6f | 406 | break; |
c1bd25fd DJ |
407 | } |
408 | ||
409 | /* Otherwise, we appear to be OK. So far. */ | |
410 | } | |
411 | } | |
412 | while (!done); | |
413 | ||
65cf3563 | 414 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 415 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 416 | } |
e8289572 | 417 | |
4f7ae6f5 | 418 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
75242ef4 JK |
419 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS |
420 | entries. */ | |
e8289572 JB |
421 | |
422 | void | |
75242ef4 JK |
423 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
424 | int num_sections, | |
37e136b1 | 425 | const section_addr_info &addrs) |
e8289572 JB |
426 | { |
427 | int i; | |
428 | ||
75242ef4 | 429 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 430 | |
c378eb4e | 431 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 432 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 433 | { |
3189cb12 | 434 | const struct other_sections *osp; |
e8289572 | 435 | |
37e136b1 | 436 | osp = &addrs[i]; |
5488dafb | 437 | if (osp->sectindex == -1) |
e8289572 JB |
438 | continue; |
439 | ||
c378eb4e | 440 | /* Record all sections in offsets. */ |
e8289572 | 441 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 442 | the BFD index. */ |
75242ef4 JK |
443 | section_offsets->offsets[osp->sectindex] = osp->addr; |
444 | } | |
445 | } | |
446 | ||
1276c759 JK |
447 | /* Transform section name S for a name comparison. prelink can split section |
448 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
449 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
450 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
451 | (`.sbss') section has invalid (increased) virtual address. */ | |
452 | ||
453 | static const char * | |
454 | addr_section_name (const char *s) | |
455 | { | |
456 | if (strcmp (s, ".dynbss") == 0) | |
457 | return ".bss"; | |
458 | if (strcmp (s, ".sdynbss") == 0) | |
459 | return ".sbss"; | |
460 | ||
461 | return s; | |
462 | } | |
463 | ||
37e136b1 TT |
464 | /* std::sort comparator for addrs_section_sort. Sort entries in |
465 | ascending order by their (name, sectindex) pair. sectindex makes | |
466 | the sort by name stable. */ | |
82ccf5a5 | 467 | |
37e136b1 TT |
468 | static bool |
469 | addrs_section_compar (const struct other_sections *a, | |
470 | const struct other_sections *b) | |
82ccf5a5 | 471 | { |
22e048c9 | 472 | int retval; |
82ccf5a5 | 473 | |
37e136b1 TT |
474 | retval = strcmp (addr_section_name (a->name.c_str ()), |
475 | addr_section_name (b->name.c_str ())); | |
476 | if (retval != 0) | |
477 | return retval < 0; | |
82ccf5a5 | 478 | |
37e136b1 | 479 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
480 | } |
481 | ||
37e136b1 | 482 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 483 | |
37e136b1 TT |
484 | static std::vector<const struct other_sections *> |
485 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 486 | { |
82ccf5a5 JK |
487 | int i; |
488 | ||
37e136b1 TT |
489 | std::vector<const struct other_sections *> array (addrs.size ()); |
490 | for (i = 0; i < addrs.size (); i++) | |
491 | array[i] = &addrs[i]; | |
82ccf5a5 | 492 | |
37e136b1 | 493 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
494 | |
495 | return array; | |
496 | } | |
497 | ||
75242ef4 | 498 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
499 | also SECTINDEXes specific to ABFD there. This function can be used to |
500 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
501 | |
502 | void | |
37e136b1 | 503 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
504 | { |
505 | asection *lower_sect; | |
75242ef4 JK |
506 | CORE_ADDR lower_offset; |
507 | int i; | |
508 | ||
509 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
510 | continguous sections. */ |
511 | lower_sect = NULL; | |
512 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
513 | if (lower_sect == NULL) |
514 | { | |
515 | warning (_("no loadable sections found in added symbol-file %s"), | |
516 | bfd_get_filename (abfd)); | |
517 | lower_offset = 0; | |
e8289572 | 518 | } |
75242ef4 JK |
519 | else |
520 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
521 | ||
82ccf5a5 JK |
522 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
523 | in ABFD. Section names are not unique - there can be multiple sections of | |
524 | the same name. Also the sections of the same name do not have to be | |
525 | adjacent to each other. Some sections may be present only in one of the | |
526 | files. Even sections present in both files do not have to be in the same | |
527 | order. | |
528 | ||
529 | Use stable sort by name for the sections in both files. Then linearly | |
530 | scan both lists matching as most of the entries as possible. */ | |
531 | ||
37e136b1 TT |
532 | std::vector<const struct other_sections *> addrs_sorted |
533 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 534 | |
37e136b1 TT |
535 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
536 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
537 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 538 | |
c378eb4e MS |
539 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
540 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 541 | |
37e136b1 TT |
542 | std::vector<const struct other_sections *> |
543 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 544 | |
37e136b1 TT |
545 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
546 | = abfd_addrs_sorted.begin (); | |
52941706 | 547 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 548 | { |
37e136b1 | 549 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 550 | |
37e136b1 TT |
551 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
552 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 553 | sect_name) < 0) |
37e136b1 | 554 | abfd_sorted_iter++; |
82ccf5a5 | 555 | |
37e136b1 TT |
556 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
557 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 558 | sect_name) == 0) |
82ccf5a5 JK |
559 | { |
560 | int index_in_addrs; | |
561 | ||
562 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 563 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 564 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 565 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
566 | |
567 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 568 | abfd_sorted_iter++; |
82ccf5a5 | 569 | } |
82ccf5a5 JK |
570 | } |
571 | ||
75242ef4 JK |
572 | /* Calculate offsets for the loadable sections. |
573 | FIXME! Sections must be in order of increasing loadable section | |
574 | so that contiguous sections can use the lower-offset!!! | |
575 | ||
576 | Adjust offsets if the segments are not contiguous. | |
577 | If the section is contiguous, its offset should be set to | |
578 | the offset of the highest loadable section lower than it | |
579 | (the loadable section directly below it in memory). | |
580 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
581 | ||
37e136b1 | 582 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 583 | { |
37e136b1 | 584 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
585 | |
586 | if (sect) | |
75242ef4 | 587 | { |
c378eb4e | 588 | /* This is the index used by BFD. */ |
37e136b1 | 589 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 590 | |
37e136b1 | 591 | if ((*addrs)[i].addr != 0) |
75242ef4 | 592 | { |
37e136b1 TT |
593 | (*addrs)[i].addr -= sect->addr; |
594 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
595 | } |
596 | else | |
37e136b1 | 597 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
598 | } |
599 | else | |
672d9c23 | 600 | { |
1276c759 | 601 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 602 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 603 | |
b0fcb67f JK |
604 | /* This section does not exist in ABFD, which is normally |
605 | unexpected and we want to issue a warning. | |
606 | ||
4d9743af JK |
607 | However, the ELF prelinker does create a few sections which are |
608 | marked in the main executable as loadable (they are loaded in | |
609 | memory from the DYNAMIC segment) and yet are not present in | |
610 | separate debug info files. This is fine, and should not cause | |
611 | a warning. Shared libraries contain just the section | |
612 | ".gnu.liblist" but it is not marked as loadable there. There is | |
613 | no other way to identify them than by their name as the sections | |
1276c759 JK |
614 | created by prelink have no special flags. |
615 | ||
616 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 617 | |
37e136b1 TT |
618 | if (!(sect_name == ".gnu.liblist" |
619 | || sect_name == ".gnu.conflict" | |
620 | || (sect_name == ".bss" | |
1276c759 | 621 | && i > 0 |
37e136b1 | 622 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 623 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 624 | || (sect_name == ".sbss" |
1276c759 | 625 | && i > 0 |
37e136b1 | 626 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 627 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 628 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
629 | bfd_get_filename (abfd)); |
630 | ||
37e136b1 TT |
631 | (*addrs)[i].addr = 0; |
632 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 633 | } |
75242ef4 JK |
634 | } |
635 | } | |
636 | ||
637 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
638 | of how to represent it for fast symbol reading. This is the default | |
639 | version of the sym_fns.sym_offsets function for symbol readers that | |
640 | don't need to do anything special. It allocates a section_offsets table | |
641 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
642 | ||
643 | void | |
644 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 645 | const section_addr_info &addrs) |
75242ef4 | 646 | { |
d445b2f6 | 647 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
648 | objfile->section_offsets = (struct section_offsets *) |
649 | obstack_alloc (&objfile->objfile_obstack, | |
650 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
651 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
652 | objfile->num_sections, addrs); | |
e8289572 | 653 | |
c1bd25fd DJ |
654 | /* For relocatable files, all loadable sections will start at zero. |
655 | The zero is meaningless, so try to pick arbitrary addresses such | |
656 | that no loadable sections overlap. This algorithm is quadratic, | |
657 | but the number of sections in a single object file is generally | |
658 | small. */ | |
659 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
660 | { | |
661 | struct place_section_arg arg; | |
2711e456 DJ |
662 | bfd *abfd = objfile->obfd; |
663 | asection *cur_sec; | |
2711e456 DJ |
664 | |
665 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
666 | /* We do not expect this to happen; just skip this step if the | |
667 | relocatable file has a section with an assigned VMA. */ | |
668 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
669 | break; | |
670 | ||
671 | if (cur_sec == NULL) | |
672 | { | |
673 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
674 | ||
675 | /* Pick non-overlapping offsets for sections the user did not | |
676 | place explicitly. */ | |
677 | arg.offsets = objfile->section_offsets; | |
678 | arg.lowest = 0; | |
679 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
680 | ||
681 | /* Correctly filling in the section offsets is not quite | |
682 | enough. Relocatable files have two properties that | |
683 | (most) shared objects do not: | |
684 | ||
685 | - Their debug information will contain relocations. Some | |
686 | shared libraries do also, but many do not, so this can not | |
687 | be assumed. | |
688 | ||
689 | - If there are multiple code sections they will be loaded | |
690 | at different relative addresses in memory than they are | |
691 | in the objfile, since all sections in the file will start | |
692 | at address zero. | |
693 | ||
694 | Because GDB has very limited ability to map from an | |
695 | address in debug info to the correct code section, | |
696 | it relies on adding SECT_OFF_TEXT to things which might be | |
697 | code. If we clear all the section offsets, and set the | |
698 | section VMAs instead, then symfile_relocate_debug_section | |
699 | will return meaningful debug information pointing at the | |
700 | correct sections. | |
701 | ||
702 | GDB has too many different data structures for section | |
703 | addresses - a bfd, objfile, and so_list all have section | |
704 | tables, as does exec_ops. Some of these could probably | |
705 | be eliminated. */ | |
706 | ||
707 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
708 | cur_sec = cur_sec->next) | |
709 | { | |
710 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
711 | continue; | |
712 | ||
713 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
714 | exec_set_section_address (bfd_get_filename (abfd), |
715 | cur_sec->index, | |
30510692 | 716 | offsets[cur_sec->index]); |
2711e456 DJ |
717 | offsets[cur_sec->index] = 0; |
718 | } | |
719 | } | |
c1bd25fd DJ |
720 | } |
721 | ||
e8289572 | 722 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 723 | .rodata sections. */ |
e8289572 JB |
724 | init_objfile_sect_indices (objfile); |
725 | } | |
726 | ||
31d99776 DJ |
727 | /* Divide the file into segments, which are individual relocatable units. |
728 | This is the default version of the sym_fns.sym_segments function for | |
729 | symbol readers that do not have an explicit representation of segments. | |
730 | It assumes that object files do not have segments, and fully linked | |
731 | files have a single segment. */ | |
732 | ||
733 | struct symfile_segment_data * | |
734 | default_symfile_segments (bfd *abfd) | |
735 | { | |
736 | int num_sections, i; | |
737 | asection *sect; | |
738 | struct symfile_segment_data *data; | |
739 | CORE_ADDR low, high; | |
740 | ||
741 | /* Relocatable files contain enough information to position each | |
742 | loadable section independently; they should not be relocated | |
743 | in segments. */ | |
744 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
745 | return NULL; | |
746 | ||
747 | /* Make sure there is at least one loadable section in the file. */ | |
748 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
749 | { | |
750 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
751 | continue; | |
752 | ||
753 | break; | |
754 | } | |
755 | if (sect == NULL) | |
756 | return NULL; | |
757 | ||
758 | low = bfd_get_section_vma (abfd, sect); | |
759 | high = low + bfd_get_section_size (sect); | |
760 | ||
41bf6aca | 761 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 762 | data->num_segments = 1; |
fc270c35 TT |
763 | data->segment_bases = XCNEW (CORE_ADDR); |
764 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
765 | |
766 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 767 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
768 | |
769 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
770 | { | |
771 | CORE_ADDR vma; | |
772 | ||
773 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
774 | continue; | |
775 | ||
776 | vma = bfd_get_section_vma (abfd, sect); | |
777 | if (vma < low) | |
778 | low = vma; | |
779 | if (vma + bfd_get_section_size (sect) > high) | |
780 | high = vma + bfd_get_section_size (sect); | |
781 | ||
782 | data->segment_info[i] = 1; | |
783 | } | |
784 | ||
785 | data->segment_bases[0] = low; | |
786 | data->segment_sizes[0] = high - low; | |
787 | ||
788 | return data; | |
789 | } | |
790 | ||
608e2dbb TT |
791 | /* This is a convenience function to call sym_read for OBJFILE and |
792 | possibly force the partial symbols to be read. */ | |
793 | ||
794 | static void | |
b15cc25c | 795 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
796 | { |
797 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 798 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
799 | |
800 | /* find_separate_debug_file_in_section should be called only if there is | |
801 | single binary with no existing separate debug info file. */ | |
802 | if (!objfile_has_partial_symbols (objfile) | |
803 | && objfile->separate_debug_objfile == NULL | |
804 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 805 | { |
192b62ce | 806 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
807 | |
808 | if (abfd != NULL) | |
24ba069a JK |
809 | { |
810 | /* find_separate_debug_file_in_section uses the same filename for the | |
811 | virtual section-as-bfd like the bfd filename containing the | |
812 | section. Therefore use also non-canonical name form for the same | |
813 | file containing the section. */ | |
921222e2 TT |
814 | symbol_file_add_separate (abfd.get (), |
815 | bfd_get_filename (abfd.get ()), | |
816 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 817 | } |
608e2dbb TT |
818 | } |
819 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
820 | require_partial_symbols (objfile, 0); | |
821 | } | |
822 | ||
3d6e24f0 JB |
823 | /* Initialize entry point information for this objfile. */ |
824 | ||
825 | static void | |
826 | init_entry_point_info (struct objfile *objfile) | |
827 | { | |
6ef55de7 TT |
828 | struct entry_info *ei = &objfile->per_bfd->ei; |
829 | ||
830 | if (ei->initialized) | |
831 | return; | |
832 | ei->initialized = 1; | |
833 | ||
3d6e24f0 JB |
834 | /* Save startup file's range of PC addresses to help blockframe.c |
835 | decide where the bottom of the stack is. */ | |
836 | ||
837 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
838 | { | |
839 | /* Executable file -- record its entry point so we'll recognize | |
840 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
841 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
842 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
843 | } |
844 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
845 | && bfd_get_start_address (objfile->obfd) != 0) | |
846 | { | |
847 | /* Some shared libraries may have entry points set and be | |
848 | runnable. There's no clear way to indicate this, so just check | |
849 | for values other than zero. */ | |
6ef55de7 TT |
850 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
851 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
852 | } |
853 | else | |
854 | { | |
855 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 856 | ei->entry_point_p = 0; |
3d6e24f0 JB |
857 | } |
858 | ||
6ef55de7 | 859 | if (ei->entry_point_p) |
3d6e24f0 | 860 | { |
53eddfa6 | 861 | struct obj_section *osect; |
6ef55de7 | 862 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 863 | int found; |
3d6e24f0 JB |
864 | |
865 | /* Make certain that the address points at real code, and not a | |
866 | function descriptor. */ | |
867 | entry_point | |
df6d5441 | 868 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 | 869 | entry_point, |
8b88a78e | 870 | current_top_target ()); |
3d6e24f0 JB |
871 | |
872 | /* Remove any ISA markers, so that this matches entries in the | |
873 | symbol table. */ | |
6ef55de7 | 874 | ei->entry_point |
df6d5441 | 875 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
876 | |
877 | found = 0; | |
878 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
879 | { | |
880 | struct bfd_section *sect = osect->the_bfd_section; | |
881 | ||
882 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
883 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
884 | + bfd_get_section_size (sect))) | |
885 | { | |
6ef55de7 | 886 | ei->the_bfd_section_index |
53eddfa6 TT |
887 | = gdb_bfd_section_index (objfile->obfd, sect); |
888 | found = 1; | |
889 | break; | |
890 | } | |
891 | } | |
892 | ||
893 | if (!found) | |
6ef55de7 | 894 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
895 | } |
896 | } | |
897 | ||
c906108c SS |
898 | /* Process a symbol file, as either the main file or as a dynamically |
899 | loaded file. | |
900 | ||
36e4d068 JB |
901 | This function does not set the OBJFILE's entry-point info. |
902 | ||
96baa820 JM |
903 | OBJFILE is where the symbols are to be read from. |
904 | ||
7e8580c1 JB |
905 | ADDRS is the list of section load addresses. If the user has given |
906 | an 'add-symbol-file' command, then this is the list of offsets and | |
907 | addresses he or she provided as arguments to the command; or, if | |
908 | we're handling a shared library, these are the actual addresses the | |
909 | sections are loaded at, according to the inferior's dynamic linker | |
910 | (as gleaned by GDB's shared library code). We convert each address | |
911 | into an offset from the section VMA's as it appears in the object | |
912 | file, and then call the file's sym_offsets function to convert this | |
913 | into a format-specific offset table --- a `struct section_offsets'. | |
d81a3eaf PT |
914 | The sectindex field is used to control the ordering of sections |
915 | with the same name. Upon return, it is updated to contain the | |
916 | correspondig BFD section index, or -1 if the section was not found. | |
96baa820 | 917 | |
7eedccfa PP |
918 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
919 | an extra symbol file such as dynamically loaded code, and wether | |
920 | breakpoint reset should be deferred. */ | |
c906108c | 921 | |
36e4d068 JB |
922 | static void |
923 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 924 | section_addr_info *addrs, |
b15cc25c | 925 | symfile_add_flags add_flags) |
c906108c | 926 | { |
37e136b1 | 927 | section_addr_info local_addr; |
7eedccfa | 928 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 929 | |
8fb8eb5c | 930 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 931 | |
75245b24 | 932 | if (objfile->sf == NULL) |
36e4d068 JB |
933 | { |
934 | /* No symbols to load, but we still need to make sure | |
935 | that the section_offsets table is allocated. */ | |
d445b2f6 | 936 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 937 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
938 | |
939 | objfile->num_sections = num_sections; | |
940 | objfile->section_offsets | |
224c3ddb SM |
941 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
942 | size); | |
36e4d068 JB |
943 | memset (objfile->section_offsets, 0, size); |
944 | return; | |
945 | } | |
75245b24 | 946 | |
c906108c SS |
947 | /* Make sure that partially constructed symbol tables will be cleaned up |
948 | if an error occurs during symbol reading. */ | |
286526c1 TT |
949 | gdb::optional<clear_symtab_users_cleanup> defer_clear_users; |
950 | ||
ed2b3126 | 951 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
c906108c | 952 | |
6bf667bb DE |
953 | /* If ADDRS is NULL, put together a dummy address list. |
954 | We now establish the convention that an addr of zero means | |
c378eb4e | 955 | no load address was specified. */ |
6bf667bb | 956 | if (! addrs) |
37e136b1 | 957 | addrs = &local_addr; |
a39a16c4 | 958 | |
c5aa993b | 959 | if (mainline) |
c906108c SS |
960 | { |
961 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 962 | will be cleaned up if an error occurs during symbol reading. */ |
286526c1 | 963 | defer_clear_users.emplace ((symfile_add_flag) 0); |
c906108c SS |
964 | |
965 | /* Since no error yet, throw away the old symbol table. */ | |
966 | ||
967 | if (symfile_objfile != NULL) | |
968 | { | |
9e86da07 | 969 | delete symfile_objfile; |
adb7f338 | 970 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
971 | } |
972 | ||
973 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
974 | If the user wants to get rid of them, they should do "symbol-file" |
975 | without arguments first. Not sure this is the best behavior | |
976 | (PR 2207). */ | |
c906108c | 977 | |
c5aa993b | 978 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
979 | } |
980 | ||
981 | /* Convert addr into an offset rather than an absolute address. | |
982 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 983 | and assume that <addr> is where that got loaded. |
c906108c | 984 | |
53a5351d JM |
985 | We no longer warn if the lowest section is not a text segment (as |
986 | happens for the PA64 port. */ | |
37e136b1 | 987 | if (addrs->size () > 0) |
75242ef4 | 988 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
989 | |
990 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
991 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 992 | initial symbol reading for this file. */ |
c906108c | 993 | |
c5aa993b | 994 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 995 | clear_complaints (); |
c906108c | 996 | |
37e136b1 | 997 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 998 | |
608e2dbb | 999 | read_symbols (objfile, add_flags); |
b11896a5 | 1000 | |
c906108c SS |
1001 | /* Discard cleanups as symbol reading was successful. */ |
1002 | ||
ed2b3126 | 1003 | objfile_holder.release (); |
286526c1 TT |
1004 | if (defer_clear_users) |
1005 | defer_clear_users->release (); | |
c906108c SS |
1006 | } |
1007 | ||
36e4d068 JB |
1008 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1009 | entry-point info. */ | |
1010 | ||
6bf667bb | 1011 | static void |
36e4d068 | 1012 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 1013 | section_addr_info *addrs, |
b15cc25c | 1014 | symfile_add_flags add_flags) |
36e4d068 | 1015 | { |
6bf667bb | 1016 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1017 | init_entry_point_info (objfile); |
1018 | } | |
1019 | ||
c906108c SS |
1020 | /* Perform required actions after either reading in the initial |
1021 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1022 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1023 | |
e7d52ed3 | 1024 | static void |
b15cc25c | 1025 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1026 | { |
c906108c | 1027 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1028 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1029 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1030 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1031 | { |
1032 | /* OK, make it the "real" symbol file. */ | |
1033 | symfile_objfile = objfile; | |
1034 | ||
c1e56572 | 1035 | clear_symtab_users (add_flags); |
c906108c | 1036 | } |
7eedccfa | 1037 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1038 | { |
69de3c6a | 1039 | breakpoint_re_set (); |
c906108c SS |
1040 | } |
1041 | ||
1042 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1043 | clear_complaints (); |
c906108c SS |
1044 | } |
1045 | ||
1046 | /* Process a symbol file, as either the main file or as a dynamically | |
1047 | loaded file. | |
1048 | ||
5417f6dc | 1049 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1050 | A new reference is acquired by this function. |
7904e09f | 1051 | |
9e86da07 | 1052 | For NAME description see the objfile constructor. |
24ba069a | 1053 | |
7eedccfa PP |
1054 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1055 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1056 | |
6bf667bb | 1057 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1058 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1059 | |
63524580 JK |
1060 | PARENT is the original objfile if ABFD is a separate debug info file. |
1061 | Otherwise PARENT is NULL. | |
1062 | ||
c906108c | 1063 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1064 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1065 | |
7904e09f | 1066 | static struct objfile * |
b15cc25c PA |
1067 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1068 | symfile_add_flags add_flags, | |
37e136b1 | 1069 | section_addr_info *addrs, |
b15cc25c | 1070 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1071 | { |
1072 | struct objfile *objfile; | |
7eedccfa | 1073 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1074 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1075 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1076 | && (readnow_symbol_files |
1077 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1078 | |
9291a0cd | 1079 | if (readnow_symbol_files) |
b11896a5 TT |
1080 | { |
1081 | flags |= OBJF_READNOW; | |
1082 | add_flags &= ~SYMFILE_NO_READ; | |
1083 | } | |
97cbe998 SDJ |
1084 | else if (readnever_symbol_files |
1085 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1086 | { | |
1087 | flags |= OBJF_READNEVER; | |
1088 | add_flags |= SYMFILE_NO_READ; | |
1089 | } | |
921222e2 TT |
1090 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1091 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1092 | |
5417f6dc RM |
1093 | /* Give user a chance to burp if we'd be |
1094 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1095 | |
1096 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1097 | && mainline |
c906108c | 1098 | && from_tty |
9e2f0ad4 | 1099 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1100 | error (_("Not confirmed.")); |
c906108c | 1101 | |
b15cc25c PA |
1102 | if (mainline) |
1103 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1104 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1105 | |
63524580 JK |
1106 | if (parent) |
1107 | add_separate_debug_objfile (objfile, parent); | |
1108 | ||
78a4a9b9 AC |
1109 | /* We either created a new mapped symbol table, mapped an existing |
1110 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1111 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1112 | if (should_print) |
c906108c | 1113 | { |
769d7dc4 AC |
1114 | if (deprecated_pre_add_symbol_hook) |
1115 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1116 | else |
47fd17cd TT |
1117 | { |
1118 | puts_filtered (_("Reading symbols from ")); | |
1119 | fputs_styled (name, file_name_style.style (), gdb_stdout); | |
1120 | puts_filtered ("...\n"); | |
1121 | } | |
c906108c | 1122 | } |
6bf667bb | 1123 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1124 | |
1125 | /* We now have at least a partial symbol table. Check to see if the | |
1126 | user requested that all symbols be read on initial access via either | |
1127 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1128 | all partial symbol tables for this objfile if so. */ |
c906108c | 1129 | |
9291a0cd | 1130 | if ((flags & OBJF_READNOW)) |
c906108c | 1131 | { |
b11896a5 | 1132 | if (should_print) |
3453e7e4 | 1133 | printf_filtered (_("Expanding full symbols from %s...\n"), name); |
c906108c | 1134 | |
ccefe4c4 TT |
1135 | if (objfile->sf) |
1136 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1137 | } |
1138 | ||
e79497a1 TT |
1139 | /* Note that we only print a message if we have no symbols and have |
1140 | no separate debug file. If there is a separate debug file which | |
1141 | does not have symbols, we'll have emitted this message for that | |
1142 | file, and so printing it twice is just redundant. */ | |
1143 | if (should_print && !objfile_has_symbols (objfile) | |
1144 | && objfile->separate_debug_objfile == nullptr) | |
3453e7e4 | 1145 | printf_filtered (_("(No debugging symbols found in %s)\n"), name); |
cb3c37b2 | 1146 | |
b11896a5 | 1147 | if (should_print) |
c906108c | 1148 | { |
769d7dc4 AC |
1149 | if (deprecated_post_add_symbol_hook) |
1150 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1151 | } |
1152 | ||
481d0f41 JB |
1153 | /* We print some messages regardless of whether 'from_tty || |
1154 | info_verbose' is true, so make sure they go out at the right | |
1155 | time. */ | |
1156 | gdb_flush (gdb_stdout); | |
1157 | ||
109f874e | 1158 | if (objfile->sf == NULL) |
8caee43b | 1159 | { |
76727919 | 1160 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1161 | return objfile; /* No symbols. */ |
8caee43b | 1162 | } |
109f874e | 1163 | |
e7d52ed3 | 1164 | finish_new_objfile (objfile, add_flags); |
c906108c | 1165 | |
76727919 | 1166 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1167 | |
ce7d4522 | 1168 | bfd_cache_close_all (); |
c906108c SS |
1169 | return (objfile); |
1170 | } | |
1171 | ||
24ba069a | 1172 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1173 | see the objfile constructor. */ |
9cce227f TG |
1174 | |
1175 | void | |
b15cc25c PA |
1176 | symbol_file_add_separate (bfd *bfd, const char *name, |
1177 | symfile_add_flags symfile_flags, | |
24ba069a | 1178 | struct objfile *objfile) |
9cce227f | 1179 | { |
089b4803 TG |
1180 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1181 | because sections of BFD may not match sections of OBJFILE and because | |
1182 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1183 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1184 | |
870f88f7 | 1185 | symbol_file_add_with_addrs |
37e136b1 | 1186 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1187 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1188 | | OBJF_USERLOADED), |
1189 | objfile); | |
9cce227f | 1190 | } |
7904e09f | 1191 | |
eb4556d7 JB |
1192 | /* Process the symbol file ABFD, as either the main file or as a |
1193 | dynamically loaded file. | |
6bf667bb | 1194 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1195 | |
eb4556d7 | 1196 | struct objfile * |
b15cc25c PA |
1197 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1198 | symfile_add_flags add_flags, | |
37e136b1 | 1199 | section_addr_info *addrs, |
b15cc25c | 1200 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1201 | { |
24ba069a JK |
1202 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1203 | parent); | |
eb4556d7 JB |
1204 | } |
1205 | ||
7904e09f | 1206 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1207 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1208 | |
7904e09f | 1209 | struct objfile * |
b15cc25c | 1210 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1211 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1212 | { |
192b62ce | 1213 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1214 | |
192b62ce TT |
1215 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1216 | flags, NULL); | |
7904e09f JB |
1217 | } |
1218 | ||
d7db6da9 FN |
1219 | /* Call symbol_file_add() with default values and update whatever is |
1220 | affected by the loading of a new main(). | |
1221 | Used when the file is supplied in the gdb command line | |
1222 | and by some targets with special loading requirements. | |
1223 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1224 | argument for the switches that can only be specified in the symbol_file | |
1225 | command itself. */ | |
5417f6dc | 1226 | |
1adeb98a | 1227 | void |
ecf45d2c | 1228 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1229 | { |
d4d429d5 | 1230 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1231 | } |
1232 | ||
1233 | static void | |
ecf45d2c | 1234 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1235 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1236 | { |
ecf45d2c | 1237 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1238 | |
d4d429d5 PT |
1239 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1240 | if (reloff != 0) | |
1241 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1242 | |
d7db6da9 FN |
1243 | /* Getting new symbols may change our opinion about |
1244 | what is frameless. */ | |
1245 | reinit_frame_cache (); | |
1246 | ||
b15cc25c | 1247 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1248 | set_initial_language (); |
1adeb98a FN |
1249 | } |
1250 | ||
1251 | void | |
1252 | symbol_file_clear (int from_tty) | |
1253 | { | |
1254 | if ((have_full_symbols () || have_partial_symbols ()) | |
1255 | && from_tty | |
0430b0d6 AS |
1256 | && (symfile_objfile |
1257 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1258 | objfile_name (symfile_objfile)) |
0430b0d6 | 1259 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1260 | error (_("Not confirmed.")); |
1adeb98a | 1261 | |
0133421a JK |
1262 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1263 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1264 | no_shared_libraries (NULL, from_tty); |
1265 | ||
0133421a JK |
1266 | free_all_objfiles (); |
1267 | ||
adb7f338 | 1268 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1269 | if (from_tty) |
22068491 | 1270 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1271 | } |
1272 | ||
c4dcb155 SM |
1273 | /* See symfile.h. */ |
1274 | ||
1275 | int separate_debug_file_debug = 0; | |
1276 | ||
5b5d99cf | 1277 | static int |
a8dbfd58 | 1278 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1279 | struct objfile *parent_objfile) |
5b5d99cf | 1280 | { |
904578ed JK |
1281 | unsigned long file_crc; |
1282 | int file_crc_p; | |
32a0e547 | 1283 | struct stat parent_stat, abfd_stat; |
904578ed | 1284 | int verified_as_different; |
32a0e547 JK |
1285 | |
1286 | /* Find a separate debug info file as if symbols would be present in | |
1287 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1288 | section can contain just the basename of PARENT_OBJFILE without any | |
1289 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1290 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1291 | |
a8dbfd58 | 1292 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1293 | return 0; |
5b5d99cf | 1294 | |
c4dcb155 | 1295 | if (separate_debug_file_debug) |
50794b45 SM |
1296 | { |
1297 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1298 | gdb_flush (gdb_stdout); | |
1299 | } | |
c4dcb155 | 1300 | |
a8dbfd58 | 1301 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1)); |
f1838a98 | 1302 | |
192b62ce | 1303 | if (abfd == NULL) |
50794b45 SM |
1304 | { |
1305 | if (separate_debug_file_debug) | |
1306 | printf_filtered (_(" no, unable to open.\n")); | |
1307 | ||
1308 | return 0; | |
1309 | } | |
5b5d99cf | 1310 | |
0ba1096a | 1311 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1312 | |
1313 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1314 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1315 | meaningful st_dev.) Files accessed from gdbservers that do not |
1316 | support the vFile:fstat packet will also have st_ino set to zero. | |
1317 | Do not indicate a duplicate library in either case. While there | |
1318 | is no guarantee that a system that provides meaningful inode | |
1319 | numbers will never set st_ino to zero, this is merely an | |
1320 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1321 | |
192b62ce | 1322 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1323 | && abfd_stat.st_ino != 0 |
1324 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1325 | { |
904578ed JK |
1326 | if (abfd_stat.st_dev == parent_stat.st_dev |
1327 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1328 | { |
1329 | if (separate_debug_file_debug) | |
1330 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1331 | ||
1332 | return 0; | |
1333 | } | |
904578ed | 1334 | verified_as_different = 1; |
32a0e547 | 1335 | } |
904578ed JK |
1336 | else |
1337 | verified_as_different = 0; | |
32a0e547 | 1338 | |
192b62ce | 1339 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1340 | |
904578ed | 1341 | if (!file_crc_p) |
50794b45 SM |
1342 | { |
1343 | if (separate_debug_file_debug) | |
1344 | printf_filtered (_(" no, error computing CRC.\n")); | |
1345 | ||
1346 | return 0; | |
1347 | } | |
904578ed | 1348 | |
287ccc17 JK |
1349 | if (crc != file_crc) |
1350 | { | |
dccee2de TT |
1351 | unsigned long parent_crc; |
1352 | ||
0a93529c GB |
1353 | /* If the files could not be verified as different with |
1354 | bfd_stat then we need to calculate the parent's CRC | |
1355 | to verify whether the files are different or not. */ | |
904578ed | 1356 | |
dccee2de | 1357 | if (!verified_as_different) |
904578ed | 1358 | { |
dccee2de | 1359 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1360 | { |
1361 | if (separate_debug_file_debug) | |
1362 | printf_filtered (_(" no, error computing CRC.\n")); | |
1363 | ||
1364 | return 0; | |
1365 | } | |
904578ed JK |
1366 | } |
1367 | ||
dccee2de | 1368 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1369 | warning (_("the debug information found in \"%s\"" |
1370 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1371 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1372 | |
50794b45 SM |
1373 | if (separate_debug_file_debug) |
1374 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1375 | ||
287ccc17 JK |
1376 | return 0; |
1377 | } | |
1378 | ||
50794b45 SM |
1379 | if (separate_debug_file_debug) |
1380 | printf_filtered (_(" yes!\n")); | |
1381 | ||
287ccc17 | 1382 | return 1; |
5b5d99cf JB |
1383 | } |
1384 | ||
aa28a74e | 1385 | char *debug_file_directory = NULL; |
920d2a44 AC |
1386 | static void |
1387 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1388 | struct cmd_list_element *c, const char *value) | |
1389 | { | |
3e43a32a MS |
1390 | fprintf_filtered (file, |
1391 | _("The directory where separate debug " | |
1392 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1393 | value); |
1394 | } | |
5b5d99cf JB |
1395 | |
1396 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1397 | #define DEBUG_SUBDIRECTORY ".debug" | |
1398 | #endif | |
1399 | ||
1db33378 PP |
1400 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1401 | where the original file resides (may not be the same as | |
1402 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1403 | looking for. CANON_DIR is the "realpath" form of DIR. |
1404 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1405 | Returns the path of the file with separate debug info, or an empty |
1406 | string. */ | |
1db33378 | 1407 | |
a8dbfd58 | 1408 | static std::string |
1db33378 PP |
1409 | find_separate_debug_file (const char *dir, |
1410 | const char *canon_dir, | |
1411 | const char *debuglink, | |
1412 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1413 | { |
c4dcb155 | 1414 | if (separate_debug_file_debug) |
22068491 TT |
1415 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1416 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1417 | |
5b5d99cf | 1418 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1419 | std::string debugfile = dir; |
1420 | debugfile += debuglink; | |
5b5d99cf | 1421 | |
32a0e547 | 1422 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1423 | return debugfile; |
5417f6dc | 1424 | |
5b5d99cf | 1425 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1426 | debugfile = dir; |
1427 | debugfile += DEBUG_SUBDIRECTORY; | |
1428 | debugfile += "/"; | |
1429 | debugfile += debuglink; | |
5b5d99cf | 1430 | |
32a0e547 | 1431 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1432 | return debugfile; |
5417f6dc | 1433 | |
24ddea62 | 1434 | /* Then try in the global debugfile directories. |
f888f159 | 1435 | |
24ddea62 JK |
1436 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1437 | cause "/..." lookups. */ | |
5417f6dc | 1438 | |
5d36dfb9 AU |
1439 | bool target_prefix = startswith (dir, "target:"); |
1440 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1441 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1442 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
24ddea62 | 1443 | |
e80aaf61 | 1444 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1445 | { |
5d36dfb9 AU |
1446 | debugfile = target_prefix ? "target:" : ""; |
1447 | debugfile += debugdir.get (); | |
a8dbfd58 | 1448 | debugfile += "/"; |
5d36dfb9 | 1449 | debugfile += dir_notarget; |
a8dbfd58 | 1450 | debugfile += debuglink; |
aa28a74e | 1451 | |
32a0e547 | 1452 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1453 | return debugfile; |
24ddea62 | 1454 | |
1db33378 PP |
1455 | if (canon_dir != NULL |
1456 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1457 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1458 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1459 | { |
402d2bfe JB |
1460 | /* If the file is in the sysroot, try using its base path in |
1461 | the global debugfile directory. */ | |
5d36dfb9 AU |
1462 | debugfile = target_prefix ? "target:" : ""; |
1463 | debugfile += debugdir.get (); | |
a8dbfd58 SM |
1464 | debugfile += (canon_dir + strlen (gdb_sysroot)); |
1465 | debugfile += "/"; | |
1466 | debugfile += debuglink; | |
24ddea62 | 1467 | |
402d2bfe JB |
1468 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1469 | return debugfile; | |
1470 | ||
1471 | /* If the file is in the sysroot, try using its base path in | |
1472 | the sysroot's global debugfile directory. */ | |
1473 | debugfile = target_prefix ? "target:" : ""; | |
1474 | debugfile += gdb_sysroot; | |
1475 | debugfile += debugdir.get (); | |
1476 | debugfile += (canon_dir + strlen (gdb_sysroot)); | |
1477 | debugfile += "/"; | |
1478 | debugfile += debuglink; | |
1479 | ||
32a0e547 | 1480 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1481 | return debugfile; |
24ddea62 | 1482 | } |
402d2bfe | 1483 | |
aa28a74e | 1484 | } |
f888f159 | 1485 | |
a8dbfd58 | 1486 | return std::string (); |
1db33378 PP |
1487 | } |
1488 | ||
7edbb660 | 1489 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1490 | If there were no directory separators in PATH, PATH will be empty |
1491 | string on return. */ | |
1492 | ||
1493 | static void | |
1494 | terminate_after_last_dir_separator (char *path) | |
1495 | { | |
1496 | int i; | |
1497 | ||
1498 | /* Strip off the final filename part, leaving the directory name, | |
1499 | followed by a slash. The directory can be relative or absolute. */ | |
1500 | for (i = strlen(path) - 1; i >= 0; i--) | |
1501 | if (IS_DIR_SEPARATOR (path[i])) | |
1502 | break; | |
1503 | ||
1504 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1505 | path[i + 1] = '\0'; | |
1506 | } | |
1507 | ||
1508 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1509 | Returns pathname, or an empty string. */ |
1db33378 | 1510 | |
a8dbfd58 | 1511 | std::string |
1db33378 PP |
1512 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1513 | { | |
1db33378 | 1514 | unsigned long crc32; |
1db33378 | 1515 | |
5eae7aea TT |
1516 | gdb::unique_xmalloc_ptr<char> debuglink |
1517 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1518 | |
1519 | if (debuglink == NULL) | |
1520 | { | |
1521 | /* There's no separate debug info, hence there's no way we could | |
1522 | load it => no warning. */ | |
a8dbfd58 | 1523 | return std::string (); |
1db33378 PP |
1524 | } |
1525 | ||
5eae7aea TT |
1526 | std::string dir = objfile_name (objfile); |
1527 | terminate_after_last_dir_separator (&dir[0]); | |
1528 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1529 | |
a8dbfd58 SM |
1530 | std::string debugfile |
1531 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1532 | debuglink.get (), crc32, objfile); | |
1db33378 | 1533 | |
a8dbfd58 | 1534 | if (debugfile.empty ()) |
1db33378 | 1535 | { |
1db33378 PP |
1536 | /* For PR gdb/9538, try again with realpath (if different from the |
1537 | original). */ | |
1538 | ||
1539 | struct stat st_buf; | |
1540 | ||
4262abfb JK |
1541 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1542 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1543 | { |
5eae7aea TT |
1544 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1545 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1546 | if (symlink_dir != NULL) |
1547 | { | |
5eae7aea TT |
1548 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1549 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1550 | { |
1551 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1552 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1553 | symlink_dir.get (), | |
1554 | debuglink.get (), | |
1db33378 PP |
1555 | crc32, |
1556 | objfile); | |
1557 | } | |
1558 | } | |
1559 | } | |
1db33378 | 1560 | } |
aa28a74e | 1561 | |
25522fae | 1562 | return debugfile; |
5b5d99cf JB |
1563 | } |
1564 | ||
97cbe998 SDJ |
1565 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1566 | simultaneously. */ | |
1567 | ||
1568 | static void | |
1569 | validate_readnow_readnever (objfile_flags flags) | |
1570 | { | |
1571 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1572 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1573 | } | |
1574 | ||
c906108c SS |
1575 | /* This is the symbol-file command. Read the file, analyze its |
1576 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1577 | the command is rather bizarre: |
1578 | ||
1579 | 1. The function buildargv implements various quoting conventions | |
1580 | which are undocumented and have little or nothing in common with | |
1581 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1582 | ||
1583 | 2. Options are used, which are not generally used in GDB (perhaps | |
1584 | "set mapped on", "set readnow on" would be better) | |
1585 | ||
1586 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1587 | conventions (because it is confusing and inconvenient). */ |
1588 | ||
1589 | void | |
1d8b34a7 | 1590 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1591 | { |
c906108c SS |
1592 | dont_repeat (); |
1593 | ||
1594 | if (args == NULL) | |
1595 | { | |
1adeb98a | 1596 | symbol_file_clear (from_tty); |
c906108c SS |
1597 | } |
1598 | else | |
1599 | { | |
b15cc25c | 1600 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1601 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1602 | char *name = NULL; |
40fc416f | 1603 | bool stop_processing_options = false; |
d4d429d5 | 1604 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1605 | int idx; |
1606 | char *arg; | |
cb2f3a29 | 1607 | |
ecf45d2c SL |
1608 | if (from_tty) |
1609 | add_flags |= SYMFILE_VERBOSE; | |
1610 | ||
773a1edc | 1611 | gdb_argv built_argv (args); |
40fc416f | 1612 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1613 | { |
40fc416f | 1614 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1615 | { |
40fc416f SDJ |
1616 | if (name == NULL) |
1617 | name = arg; | |
1618 | else | |
1619 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1620 | } |
40fc416f SDJ |
1621 | else if (strcmp (arg, "-readnow") == 0) |
1622 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1623 | else if (strcmp (arg, "-readnever") == 0) |
1624 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1625 | else if (strcmp (arg, "-o") == 0) |
1626 | { | |
1627 | arg = built_argv[++idx]; | |
1628 | if (arg == NULL) | |
1629 | error (_("Missing argument to -o")); | |
1630 | ||
1631 | offset = parse_and_eval_address (arg); | |
1632 | } | |
40fc416f SDJ |
1633 | else if (strcmp (arg, "--") == 0) |
1634 | stop_processing_options = true; | |
1635 | else | |
1636 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1637 | } |
1638 | ||
1639 | if (name == NULL) | |
cb2f3a29 | 1640 | error (_("no symbol file name was specified")); |
40fc416f | 1641 | |
97cbe998 SDJ |
1642 | validate_readnow_readnever (flags); |
1643 | ||
d4d429d5 | 1644 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
c906108c SS |
1645 | } |
1646 | } | |
1647 | ||
1648 | /* Set the initial language. | |
1649 | ||
cb2f3a29 MK |
1650 | FIXME: A better solution would be to record the language in the |
1651 | psymtab when reading partial symbols, and then use it (if known) to | |
1652 | set the language. This would be a win for formats that encode the | |
1653 | language in an easily discoverable place, such as DWARF. For | |
1654 | stabs, we can jump through hoops looking for specially named | |
1655 | symbols or try to intuit the language from the specific type of | |
1656 | stabs we find, but we can't do that until later when we read in | |
1657 | full symbols. */ | |
c906108c | 1658 | |
8b60591b | 1659 | void |
fba45db2 | 1660 | set_initial_language (void) |
c906108c | 1661 | { |
9e6c82ad | 1662 | enum language lang = main_language (); |
c906108c | 1663 | |
9e6c82ad | 1664 | if (lang == language_unknown) |
01f8c46d | 1665 | { |
bf6d8a91 | 1666 | char *name = main_name (); |
d12307c1 | 1667 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1668 | |
bf6d8a91 TT |
1669 | if (sym != NULL) |
1670 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1671 | } |
cb2f3a29 | 1672 | |
ccefe4c4 TT |
1673 | if (lang == language_unknown) |
1674 | { | |
1675 | /* Make C the default language */ | |
1676 | lang = language_c; | |
c906108c | 1677 | } |
ccefe4c4 TT |
1678 | |
1679 | set_language (lang); | |
1680 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1681 | } |
1682 | ||
cb2f3a29 MK |
1683 | /* Open the file specified by NAME and hand it off to BFD for |
1684 | preliminary analysis. Return a newly initialized bfd *, which | |
1685 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1686 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1687 | |
192b62ce | 1688 | gdb_bfd_ref_ptr |
97a41605 | 1689 | symfile_bfd_open (const char *name) |
c906108c | 1690 | { |
97a41605 | 1691 | int desc = -1; |
c906108c | 1692 | |
e0cc99a6 | 1693 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1694 | if (!is_target_filename (name)) |
f1838a98 | 1695 | { |
ee0c3293 | 1696 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1697 | |
97a41605 GB |
1698 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1699 | desc = openp (getenv ("PATH"), | |
1700 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1701 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1702 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1703 | if (desc < 0) |
1704 | { | |
ee0c3293 | 1705 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1706 | |
ee0c3293 | 1707 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1708 | desc = openp (getenv ("PATH"), |
1709 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1710 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1711 | } | |
c906108c | 1712 | #endif |
97a41605 | 1713 | if (desc < 0) |
ee0c3293 | 1714 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1715 | |
e0cc99a6 | 1716 | name = absolute_name.get (); |
97a41605 | 1717 | } |
c906108c | 1718 | |
192b62ce TT |
1719 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1720 | if (sym_bfd == NULL) | |
faab9922 JK |
1721 | error (_("`%s': can't open to read symbols: %s."), name, |
1722 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1723 | |
192b62ce TT |
1724 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1725 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1726 | |
192b62ce TT |
1727 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1728 | error (_("`%s': can't read symbols: %s."), name, | |
1729 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1730 | |
1731 | return sym_bfd; | |
c906108c SS |
1732 | } |
1733 | ||
cb2f3a29 MK |
1734 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1735 | the section was not found. */ | |
1736 | ||
0e931cf0 | 1737 | int |
a121b7c1 | 1738 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1739 | { |
1740 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1741 | |
0e931cf0 JB |
1742 | if (sect) |
1743 | return sect->index; | |
1744 | else | |
1745 | return -1; | |
1746 | } | |
1747 | ||
c256e171 DE |
1748 | /* Link SF into the global symtab_fns list. |
1749 | FLAVOUR is the file format that SF handles. | |
1750 | Called on startup by the _initialize routine in each object file format | |
1751 | reader, to register information about each format the reader is prepared | |
1752 | to handle. */ | |
c906108c SS |
1753 | |
1754 | void | |
c256e171 | 1755 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1756 | { |
905014d7 | 1757 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1758 | } |
1759 | ||
cb2f3a29 MK |
1760 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1761 | either returns or calls error(). The result is an initialized | |
1762 | struct sym_fns in the objfile structure, that contains cached | |
1763 | information about the symbol file. */ | |
c906108c | 1764 | |
00b5771c | 1765 | static const struct sym_fns * |
31d99776 | 1766 | find_sym_fns (bfd *abfd) |
c906108c | 1767 | { |
31d99776 | 1768 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1769 | |
75245b24 MS |
1770 | if (our_flavour == bfd_target_srec_flavour |
1771 | || our_flavour == bfd_target_ihex_flavour | |
1772 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1773 | return NULL; /* No symbols. */ |
75245b24 | 1774 | |
905014d7 SM |
1775 | for (const registered_sym_fns &rsf : symtab_fns) |
1776 | if (our_flavour == rsf.sym_flavour) | |
1777 | return rsf.sym_fns; | |
cb2f3a29 | 1778 | |
8a3fe4f8 | 1779 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1780 | bfd_get_target (abfd)); |
c906108c SS |
1781 | } |
1782 | \f | |
cb2f3a29 | 1783 | |
c906108c SS |
1784 | /* This function runs the load command of our current target. */ |
1785 | ||
1786 | static void | |
5fed81ff | 1787 | load_command (const char *arg, int from_tty) |
c906108c | 1788 | { |
e5cc9f32 JB |
1789 | dont_repeat (); |
1790 | ||
4487aabf PA |
1791 | /* The user might be reloading because the binary has changed. Take |
1792 | this opportunity to check. */ | |
1793 | reopen_exec_file (); | |
1794 | reread_symbols (); | |
1795 | ||
b577b6af | 1796 | std::string temp; |
c906108c | 1797 | if (arg == NULL) |
1986bccd | 1798 | { |
b577b6af | 1799 | const char *parg, *prev; |
1986bccd | 1800 | |
b577b6af | 1801 | arg = get_exec_file (1); |
1986bccd | 1802 | |
b577b6af TT |
1803 | /* We may need to quote this string so buildargv can pull it |
1804 | apart. */ | |
1805 | prev = parg = arg; | |
1986bccd AS |
1806 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1807 | { | |
b577b6af TT |
1808 | temp.append (prev, parg - prev); |
1809 | prev = parg++; | |
1810 | temp.push_back ('\\'); | |
1986bccd | 1811 | } |
b577b6af TT |
1812 | /* If we have not copied anything yet, then we didn't see a |
1813 | character to quote, and we can just leave ARG unchanged. */ | |
1814 | if (!temp.empty ()) | |
1986bccd | 1815 | { |
b577b6af TT |
1816 | temp.append (prev); |
1817 | arg = temp.c_str (); | |
1986bccd AS |
1818 | } |
1819 | } | |
1820 | ||
c906108c | 1821 | target_load (arg, from_tty); |
2889e661 JB |
1822 | |
1823 | /* After re-loading the executable, we don't really know which | |
1824 | overlays are mapped any more. */ | |
1825 | overlay_cache_invalid = 1; | |
c906108c SS |
1826 | } |
1827 | ||
1828 | /* This version of "load" should be usable for any target. Currently | |
1829 | it is just used for remote targets, not inftarg.c or core files, | |
1830 | on the theory that only in that case is it useful. | |
1831 | ||
1832 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1833 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1834 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1835 | performance compares. */ | |
917317f4 | 1836 | |
917317f4 JM |
1837 | static int validate_download = 0; |
1838 | ||
e4f9b4d5 MS |
1839 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1840 | ||
1841 | static void | |
1842 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1843 | { | |
19ba03f4 | 1844 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1845 | |
2c500098 | 1846 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1847 | } |
1848 | ||
a76d924d | 1849 | /* Opaque data for load_progress. */ |
55089490 TT |
1850 | struct load_progress_data |
1851 | { | |
a76d924d | 1852 | /* Cumulative data. */ |
55089490 TT |
1853 | unsigned long write_count = 0; |
1854 | unsigned long data_count = 0; | |
1855 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1856 | }; |
1857 | ||
1858 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1859 | struct load_progress_section_data |
1860 | { | |
1861 | load_progress_section_data (load_progress_data *cumulative_, | |
1862 | const char *section_name_, ULONGEST section_size_, | |
1863 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1864 | : cumulative (cumulative_), section_name (section_name_), | |
1865 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1866 | {} | |
1867 | ||
a76d924d | 1868 | struct load_progress_data *cumulative; |
cf7a04e8 | 1869 | |
a76d924d | 1870 | /* Per-section data. */ |
cf7a04e8 | 1871 | const char *section_name; |
55089490 | 1872 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1873 | ULONGEST section_size; |
1874 | CORE_ADDR lma; | |
1875 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1876 | }; |
1877 | ||
55089490 TT |
1878 | /* Opaque data for load_section_callback. */ |
1879 | struct load_section_data | |
1880 | { | |
1881 | load_section_data (load_progress_data *progress_data_) | |
1882 | : progress_data (progress_data_) | |
1883 | {} | |
1884 | ||
1885 | ~load_section_data () | |
1886 | { | |
1887 | for (auto &&request : requests) | |
1888 | { | |
1889 | xfree (request.data); | |
1890 | delete ((load_progress_section_data *) request.baton); | |
1891 | } | |
1892 | } | |
1893 | ||
1894 | CORE_ADDR load_offset = 0; | |
1895 | struct load_progress_data *progress_data; | |
1896 | std::vector<struct memory_write_request> requests; | |
1897 | }; | |
1898 | ||
a76d924d | 1899 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1900 | |
1901 | static void | |
1902 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1903 | { | |
19ba03f4 SM |
1904 | struct load_progress_section_data *args |
1905 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1906 | struct load_progress_data *totals; |
1907 | ||
1908 | if (args == NULL) | |
1909 | /* Writing padding data. No easy way to get at the cumulative | |
1910 | stats, so just ignore this. */ | |
1911 | return; | |
1912 | ||
1913 | totals = args->cumulative; | |
1914 | ||
1915 | if (bytes == 0 && args->section_sent == 0) | |
1916 | { | |
1917 | /* The write is just starting. Let the user know we've started | |
1918 | this section. */ | |
112e8700 SM |
1919 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1920 | args->section_name, | |
1921 | hex_string (args->section_size), | |
1922 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1923 | return; |
1924 | } | |
cf7a04e8 DJ |
1925 | |
1926 | if (validate_download) | |
1927 | { | |
1928 | /* Broken memories and broken monitors manifest themselves here | |
1929 | when bring new computers to life. This doubles already slow | |
1930 | downloads. */ | |
1931 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1932 | might add a verify_memory() method to the target vector and | |
1933 | then use that. remote.c could implement that method using | |
1934 | the ``qCRC'' packet. */ | |
0efef640 | 1935 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1936 | |
0efef640 | 1937 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1938 | error (_("Download verify read failed at %s"), |
f5656ead | 1939 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1940 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1941 | error (_("Download verify compare failed at %s"), |
f5656ead | 1942 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1943 | } |
a76d924d | 1944 | totals->data_count += bytes; |
cf7a04e8 DJ |
1945 | args->lma += bytes; |
1946 | args->buffer += bytes; | |
a76d924d | 1947 | totals->write_count += 1; |
cf7a04e8 | 1948 | args->section_sent += bytes; |
522002f9 | 1949 | if (check_quit_flag () |
cf7a04e8 DJ |
1950 | || (deprecated_ui_load_progress_hook != NULL |
1951 | && deprecated_ui_load_progress_hook (args->section_name, | |
1952 | args->section_sent))) | |
1953 | error (_("Canceled the download")); | |
1954 | ||
1955 | if (deprecated_show_load_progress != NULL) | |
1956 | deprecated_show_load_progress (args->section_name, | |
1957 | args->section_sent, | |
1958 | args->section_size, | |
a76d924d DJ |
1959 | totals->data_count, |
1960 | totals->total_size); | |
cf7a04e8 DJ |
1961 | } |
1962 | ||
e4f9b4d5 MS |
1963 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1964 | ||
1965 | static void | |
1966 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1967 | { | |
19ba03f4 | 1968 | struct load_section_data *args = (struct load_section_data *) data; |
cf7a04e8 | 1969 | bfd_size_type size = bfd_get_section_size (asec); |
cf7a04e8 | 1970 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1971 | |
cf7a04e8 DJ |
1972 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1973 | return; | |
e4f9b4d5 | 1974 | |
cf7a04e8 DJ |
1975 | if (size == 0) |
1976 | return; | |
e4f9b4d5 | 1977 | |
55089490 TT |
1978 | ULONGEST begin = bfd_section_lma (abfd, asec) + args->load_offset; |
1979 | ULONGEST end = begin + size; | |
1980 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1981 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1982 | |
55089490 TT |
1983 | load_progress_section_data *section_data |
1984 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1985 | begin, buffer); | |
cf7a04e8 | 1986 | |
55089490 | 1987 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1988 | } |
1989 | ||
dcb07cfa PA |
1990 | static void print_transfer_performance (struct ui_file *stream, |
1991 | unsigned long data_count, | |
1992 | unsigned long write_count, | |
1993 | std::chrono::steady_clock::duration d); | |
1994 | ||
c906108c | 1995 | void |
9cbe5fff | 1996 | generic_load (const char *args, int from_tty) |
c906108c | 1997 | { |
a76d924d | 1998 | struct load_progress_data total_progress; |
55089490 | 1999 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 2000 | struct ui_out *uiout = current_uiout; |
a76d924d | 2001 | |
d1a41061 PP |
2002 | if (args == NULL) |
2003 | error_no_arg (_("file to load")); | |
1986bccd | 2004 | |
773a1edc | 2005 | gdb_argv argv (args); |
1986bccd | 2006 | |
ee0c3293 | 2007 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
2008 | |
2009 | if (argv[1] != NULL) | |
917317f4 | 2010 | { |
f698ca8e | 2011 | const char *endptr; |
ba5f2f8a | 2012 | |
f698ca8e | 2013 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
2014 | |
2015 | /* If the last word was not a valid number then | |
2016 | treat it as a file name with spaces in. */ | |
2017 | if (argv[1] == endptr) | |
2018 | error (_("Invalid download offset:%s."), argv[1]); | |
2019 | ||
2020 | if (argv[2] != NULL) | |
2021 | error (_("Too many parameters.")); | |
917317f4 | 2022 | } |
c906108c | 2023 | |
c378eb4e | 2024 | /* Open the file for loading. */ |
ee0c3293 | 2025 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2026 | if (loadfile_bfd == NULL) |
ee0c3293 | 2027 | perror_with_name (filename.get ()); |
917317f4 | 2028 | |
192b62ce | 2029 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2030 | { |
ee0c3293 | 2031 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2032 | bfd_errmsg (bfd_get_error ())); |
2033 | } | |
c5aa993b | 2034 | |
192b62ce | 2035 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2036 | (void *) &total_progress.total_size); |
2037 | ||
192b62ce | 2038 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2039 | |
dcb07cfa PA |
2040 | using namespace std::chrono; |
2041 | ||
2042 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2043 | |
a76d924d DJ |
2044 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2045 | load_progress) != 0) | |
2046 | error (_("Load failed")); | |
c906108c | 2047 | |
dcb07cfa | 2048 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2049 | |
55089490 | 2050 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2051 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2052 | uiout->text ("Start address "); |
2053 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2054 | uiout->text (", load size "); | |
2055 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2056 | uiout->text ("\n"); | |
fb14de7b | 2057 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2058 | |
38963c97 DJ |
2059 | /* Reset breakpoints, now that we have changed the load image. For |
2060 | instance, breakpoints may have been set (or reset, by | |
2061 | post_create_inferior) while connected to the target but before we | |
2062 | loaded the program. In that case, the prologue analyzer could | |
2063 | have read instructions from the target to find the right | |
2064 | breakpoint locations. Loading has changed the contents of that | |
2065 | memory. */ | |
2066 | ||
2067 | breakpoint_re_set (); | |
2068 | ||
a76d924d DJ |
2069 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2070 | total_progress.write_count, | |
dcb07cfa | 2071 | end_time - start_time); |
c906108c SS |
2072 | } |
2073 | ||
dcb07cfa PA |
2074 | /* Report on STREAM the performance of a memory transfer operation, |
2075 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2076 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2077 | that information is not available. TIME is how long the operation | |
2078 | lasted. */ | |
c906108c | 2079 | |
dcb07cfa | 2080 | static void |
d9fcf2fb | 2081 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2082 | unsigned long data_count, |
2083 | unsigned long write_count, | |
dcb07cfa | 2084 | std::chrono::steady_clock::duration time) |
917317f4 | 2085 | { |
dcb07cfa | 2086 | using namespace std::chrono; |
79a45e25 | 2087 | struct ui_out *uiout = current_uiout; |
2b71414d | 2088 | |
dcb07cfa | 2089 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2090 | |
112e8700 | 2091 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2092 | if (ms.count () > 0) |
8b93c638 | 2093 | { |
dcb07cfa | 2094 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2095 | |
112e8700 | 2096 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2097 | { |
112e8700 SM |
2098 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2099 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2100 | } |
2101 | else if (rate < 1024) | |
2102 | { | |
112e8700 SM |
2103 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2104 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2105 | } |
2106 | else | |
2107 | { | |
112e8700 SM |
2108 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2109 | uiout->text (" KB/sec"); | |
9f43d28c | 2110 | } |
8b93c638 JM |
2111 | } |
2112 | else | |
2113 | { | |
112e8700 SM |
2114 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2115 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2116 | } |
2117 | if (write_count > 0) | |
2118 | { | |
112e8700 SM |
2119 | uiout->text (", "); |
2120 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2121 | uiout->text (" bytes/write"); | |
8b93c638 | 2122 | } |
112e8700 | 2123 | uiout->text (".\n"); |
c906108c SS |
2124 | } |
2125 | ||
291f9a96 PT |
2126 | /* Add an OFFSET to the start address of each section in OBJF, except |
2127 | sections that were specified in ADDRS. */ | |
2128 | ||
2129 | static void | |
2130 | set_objfile_default_section_offset (struct objfile *objf, | |
2131 | const section_addr_info &addrs, | |
2132 | CORE_ADDR offset) | |
2133 | { | |
2134 | /* Add OFFSET to all sections by default. */ | |
2135 | std::vector<struct section_offsets> offsets (objf->num_sections, | |
027a4c30 | 2136 | { { offset } }); |
291f9a96 PT |
2137 | |
2138 | /* Create sorted lists of all sections in ADDRS as well as all | |
2139 | sections in OBJF. */ | |
2140 | ||
2141 | std::vector<const struct other_sections *> addrs_sorted | |
2142 | = addrs_section_sort (addrs); | |
2143 | ||
2144 | section_addr_info objf_addrs | |
2145 | = build_section_addr_info_from_objfile (objf); | |
2146 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2147 | = addrs_section_sort (objf_addrs); | |
2148 | ||
2149 | /* Walk the BFD section list, and if a matching section is found in | |
2150 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2151 | unchanged. | |
2152 | ||
2153 | Note that both lists may contain multiple sections with the same | |
2154 | name, and then the sections from ADDRS are matched in BFD order | |
2155 | (thanks to sectindex). */ | |
2156 | ||
2157 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2158 | = addrs_sorted.begin (); | |
ff27d073 | 2159 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2160 | { |
2161 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2162 | int cmp = -1; | |
2163 | ||
2164 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2165 | { | |
2166 | const struct other_sections *sect = *addrs_sorted_iter; | |
2167 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2168 | cmp = strcmp (sect_name, objf_name); | |
2169 | if (cmp <= 0) | |
2170 | ++addrs_sorted_iter; | |
2171 | } | |
2172 | ||
2173 | if (cmp == 0) | |
2174 | offsets[objf_sect->sectindex].offsets[0] = 0; | |
2175 | } | |
2176 | ||
2177 | /* Apply the new section offsets. */ | |
2178 | objfile_relocate (objf, offsets.data ()); | |
2179 | } | |
2180 | ||
c906108c SS |
2181 | /* This function allows the addition of incrementally linked object files. |
2182 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2183 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2184 | special case syntax for the rombug target (Rombug is the boot | |
2185 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2186 | rombug case, the user doesn't need to supply a text address, | |
2187 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2188 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2189 | |
c906108c | 2190 | static void |
2cf311eb | 2191 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2192 | { |
5af949e3 | 2193 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2194 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2195 | char *arg; |
2acceee2 | 2196 | int argcnt = 0; |
76ad5e1e | 2197 | struct objfile *objf; |
b15cc25c PA |
2198 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2199 | symfile_add_flags add_flags = 0; | |
2200 | ||
2201 | if (from_tty) | |
2202 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2203 | |
a39a16c4 | 2204 | struct sect_opt |
2acceee2 | 2205 | { |
a121b7c1 PA |
2206 | const char *name; |
2207 | const char *value; | |
a39a16c4 | 2208 | }; |
db162d44 | 2209 | |
40fc416f SDJ |
2210 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2211 | bool stop_processing_options = false; | |
291f9a96 | 2212 | CORE_ADDR offset = 0; |
c5aa993b | 2213 | |
c906108c SS |
2214 | dont_repeat (); |
2215 | ||
2216 | if (args == NULL) | |
8a3fe4f8 | 2217 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2218 | |
40fc416f | 2219 | bool seen_addr = false; |
291f9a96 | 2220 | bool seen_offset = false; |
773a1edc | 2221 | gdb_argv argv (args); |
db162d44 | 2222 | |
5b96932b AS |
2223 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2224 | { | |
40fc416f | 2225 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2226 | { |
40fc416f | 2227 | if (filename == NULL) |
41dc8db8 | 2228 | { |
40fc416f SDJ |
2229 | /* First non-option argument is always the filename. */ |
2230 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2231 | } |
40fc416f | 2232 | else if (!seen_addr) |
41dc8db8 | 2233 | { |
40fc416f SDJ |
2234 | /* The second non-option argument is always the text |
2235 | address at which to load the program. */ | |
2236 | sect_opts[0].value = arg; | |
2237 | seen_addr = true; | |
41dc8db8 MB |
2238 | } |
2239 | else | |
02ca603a | 2240 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2241 | } |
40fc416f SDJ |
2242 | else if (strcmp (arg, "-readnow") == 0) |
2243 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2244 | else if (strcmp (arg, "-readnever") == 0) |
2245 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2246 | else if (strcmp (arg, "-s") == 0) |
2247 | { | |
2248 | if (argv[argcnt + 1] == NULL) | |
2249 | error (_("Missing section name after \"-s\"")); | |
2250 | else if (argv[argcnt + 2] == NULL) | |
2251 | error (_("Missing section address after \"-s\"")); | |
2252 | ||
2253 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2254 | ||
2255 | sect_opts.push_back (sect); | |
2256 | argcnt += 2; | |
2257 | } | |
291f9a96 PT |
2258 | else if (strcmp (arg, "-o") == 0) |
2259 | { | |
2260 | arg = argv[++argcnt]; | |
2261 | if (arg == NULL) | |
2262 | error (_("Missing argument to -o")); | |
2263 | ||
2264 | offset = parse_and_eval_address (arg); | |
2265 | seen_offset = true; | |
2266 | } | |
40fc416f SDJ |
2267 | else if (strcmp (arg, "--") == 0) |
2268 | stop_processing_options = true; | |
2269 | else | |
2270 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2271 | } |
c906108c | 2272 | |
40fc416f SDJ |
2273 | if (filename == NULL) |
2274 | error (_("You must provide a filename to be loaded.")); | |
2275 | ||
97cbe998 SDJ |
2276 | validate_readnow_readnever (flags); |
2277 | ||
c378eb4e | 2278 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2279 | a sect_addr_info structure to be passed around to other |
2280 | functions. We have to split this up into separate print | |
bb599908 | 2281 | statements because hex_string returns a local static |
c378eb4e | 2282 | string. */ |
5417f6dc | 2283 | |
ed6dfe51 | 2284 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2285 | filename.get ()); |
37e136b1 | 2286 | section_addr_info section_addrs; |
ed6dfe51 PT |
2287 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2288 | if (!seen_addr) | |
2289 | ++it; | |
2290 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2291 | { |
db162d44 | 2292 | CORE_ADDR addr; |
ed6dfe51 PT |
2293 | const char *val = it->value; |
2294 | const char *sec = it->name; | |
5417f6dc | 2295 | |
ed6dfe51 PT |
2296 | if (section_addrs.empty ()) |
2297 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2298 | addr = parse_and_eval_address (val); |
db162d44 | 2299 | |
db162d44 | 2300 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2301 | entered on the command line. Every array element is |
2302 | assigned an ascending section index to preserve the above | |
2303 | order over an unstable sorting algorithm. This dummy | |
2304 | index is not used for any other purpose. | |
2305 | */ | |
2306 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2307 | printf_filtered ("\t%s_addr = %s\n", sec, |
2308 | paddress (gdbarch, addr)); | |
db162d44 | 2309 | |
5417f6dc | 2310 | /* The object's sections are initialized when a |
db162d44 | 2311 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2312 | This happens in reread_symbols. |
db162d44 EZ |
2313 | At this point, we don't know what file type this is, |
2314 | so we can't determine what section names are valid. */ | |
2acceee2 | 2315 | } |
291f9a96 PT |
2316 | if (seen_offset) |
2317 | printf_unfiltered (_("%s offset by %s\n"), | |
2318 | (section_addrs.empty () | |
2319 | ? _(" with all sections") | |
2320 | : _("with other sections")), | |
2321 | paddress (gdbarch, offset)); | |
2322 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2323 | printf_unfiltered ("\n"); |
db162d44 | 2324 | |
2acceee2 | 2325 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2326 | error (_("Not confirmed.")); |
c906108c | 2327 | |
37e136b1 TT |
2328 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2329 | flags); | |
76ad5e1e | 2330 | |
291f9a96 PT |
2331 | if (seen_offset) |
2332 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2333 | ||
76ad5e1e | 2334 | add_target_sections_of_objfile (objf); |
c906108c SS |
2335 | |
2336 | /* Getting new symbols may change our opinion about what is | |
2337 | frameless. */ | |
2338 | reinit_frame_cache (); | |
2339 | } | |
2340 | \f | |
70992597 | 2341 | |
63644780 NB |
2342 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2343 | ||
2344 | static void | |
2cf311eb | 2345 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2346 | { |
63644780 | 2347 | struct objfile *objf = NULL; |
63644780 | 2348 | struct program_space *pspace = current_program_space; |
63644780 NB |
2349 | |
2350 | dont_repeat (); | |
2351 | ||
2352 | if (args == NULL) | |
2353 | error (_("remove-symbol-file: no symbol file provided")); | |
2354 | ||
773a1edc | 2355 | gdb_argv argv (args); |
63644780 NB |
2356 | |
2357 | if (strcmp (argv[0], "-a") == 0) | |
2358 | { | |
2359 | /* Interpret the next argument as an address. */ | |
2360 | CORE_ADDR addr; | |
2361 | ||
2362 | if (argv[1] == NULL) | |
2363 | error (_("Missing address argument")); | |
2364 | ||
2365 | if (argv[2] != NULL) | |
2366 | error (_("Junk after %s"), argv[1]); | |
2367 | ||
2368 | addr = parse_and_eval_address (argv[1]); | |
2369 | ||
2030c079 | 2370 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2371 | { |
aed57c53 TT |
2372 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2373 | && (objfile->flags & OBJF_SHARED) != 0 | |
2374 | && objfile->pspace == pspace | |
2375 | && is_addr_in_objfile (addr, objfile)) | |
2376 | { | |
2377 | objf = objfile; | |
2378 | break; | |
2379 | } | |
63644780 NB |
2380 | } |
2381 | } | |
2382 | else if (argv[0] != NULL) | |
2383 | { | |
2384 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2385 | |
2386 | if (argv[1] != NULL) | |
2387 | error (_("Junk after %s"), argv[0]); | |
2388 | ||
ee0c3293 | 2389 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2390 | |
2030c079 | 2391 | for (objfile *objfile : current_program_space->objfiles ()) |
63644780 | 2392 | { |
aed57c53 TT |
2393 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2394 | && (objfile->flags & OBJF_SHARED) != 0 | |
2395 | && objfile->pspace == pspace | |
2396 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2397 | { | |
2398 | objf = objfile; | |
2399 | break; | |
2400 | } | |
63644780 NB |
2401 | } |
2402 | } | |
2403 | ||
2404 | if (objf == NULL) | |
2405 | error (_("No symbol file found")); | |
2406 | ||
2407 | if (from_tty | |
2408 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2409 | objfile_name (objf))) | |
2410 | error (_("Not confirmed.")); | |
2411 | ||
9e86da07 | 2412 | delete objf; |
63644780 | 2413 | clear_symtab_users (0); |
63644780 NB |
2414 | } |
2415 | ||
c906108c | 2416 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2417 | |
c906108c | 2418 | void |
fba45db2 | 2419 | reread_symbols (void) |
c906108c SS |
2420 | { |
2421 | struct objfile *objfile; | |
2422 | long new_modtime; | |
c906108c SS |
2423 | struct stat new_statbuf; |
2424 | int res; | |
4c404b8b | 2425 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2426 | |
2427 | /* With the addition of shared libraries, this should be modified, | |
2428 | the load time should be saved in the partial symbol tables, since | |
2429 | different tables may come from different source files. FIXME. | |
2430 | This routine should then walk down each partial symbol table | |
c378eb4e | 2431 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2432 | |
c5aa993b JM |
2433 | for (objfile = object_files; objfile; objfile = objfile->next) |
2434 | { | |
9cce227f TG |
2435 | if (objfile->obfd == NULL) |
2436 | continue; | |
2437 | ||
2438 | /* Separate debug objfiles are handled in the main objfile. */ | |
2439 | if (objfile->separate_debug_objfile_backlink) | |
2440 | continue; | |
2441 | ||
02aeec7b JB |
2442 | /* If this object is from an archive (what you usually create with |
2443 | `ar', often called a `static library' on most systems, though | |
2444 | a `shared library' on AIX is also an archive), then you should | |
2445 | stat on the archive name, not member name. */ | |
9cce227f TG |
2446 | if (objfile->obfd->my_archive) |
2447 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2448 | else | |
4262abfb | 2449 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2450 | if (res != 0) |
2451 | { | |
c378eb4e | 2452 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2453 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2454 | objfile_name (objfile)); | |
9cce227f TG |
2455 | continue; |
2456 | } | |
2457 | new_modtime = new_statbuf.st_mtime; | |
2458 | if (new_modtime != objfile->mtime) | |
2459 | { | |
9cce227f TG |
2460 | struct section_offsets *offsets; |
2461 | int num_offsets; | |
9cce227f | 2462 | |
22068491 TT |
2463 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2464 | objfile_name (objfile)); | |
9cce227f TG |
2465 | |
2466 | /* There are various functions like symbol_file_add, | |
2467 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2468 | appear to do what we want. But they have various other | |
2469 | effects which we *don't* want. So we just do stuff | |
2470 | ourselves. We don't worry about mapped files (for one thing, | |
2471 | any mapped file will be out of date). */ | |
2472 | ||
2473 | /* If we get an error, blow away this objfile (not sure if | |
2474 | that is the correct response for things like shared | |
2475 | libraries). */ | |
ed2b3126 TT |
2476 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2477 | ||
9cce227f | 2478 | /* We need to do this whenever any symbols go away. */ |
286526c1 | 2479 | clear_symtab_users_cleanup defer_clear_users (0); |
9cce227f | 2480 | |
0ba1096a KT |
2481 | if (exec_bfd != NULL |
2482 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2483 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2484 | { |
2485 | /* Reload EXEC_BFD without asking anything. */ | |
2486 | ||
2487 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2488 | } | |
2489 | ||
f6eeced0 JK |
2490 | /* Keep the calls order approx. the same as in free_objfile. */ |
2491 | ||
2492 | /* Free the separate debug objfiles. It will be | |
2493 | automatically recreated by sym_read. */ | |
2494 | free_objfile_separate_debug (objfile); | |
2495 | ||
2496 | /* Remove any references to this objfile in the global | |
2497 | value lists. */ | |
2498 | preserve_values (objfile); | |
2499 | ||
2500 | /* Nuke all the state that we will re-read. Much of the following | |
2501 | code which sets things to NULL really is necessary to tell | |
2502 | other parts of GDB that there is nothing currently there. | |
2503 | ||
2504 | Try to keep the freeing order compatible with free_objfile. */ | |
2505 | ||
2506 | if (objfile->sf != NULL) | |
2507 | { | |
2508 | (*objfile->sf->sym_finish) (objfile); | |
2509 | } | |
2510 | ||
2511 | clear_objfile_data (objfile); | |
2512 | ||
e1507e95 | 2513 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2514 | { |
192b62ce | 2515 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2516 | char *obfd_filename; |
a4453b7e TT |
2517 | |
2518 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2519 | /* Open the new BFD before freeing the old one, so that | |
2520 | the filename remains live. */ | |
192b62ce TT |
2521 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2522 | objfile->obfd = temp.release (); | |
e1507e95 | 2523 | if (objfile->obfd == NULL) |
192b62ce | 2524 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2525 | } |
2526 | ||
c0c9f665 | 2527 | std::string original_name = objfile->original_name; |
24ba069a | 2528 | |
9cce227f TG |
2529 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2530 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2531 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2532 | bfd_errmsg (bfd_get_error ())); |
2533 | ||
2534 | /* Save the offsets, we will nuke them with the rest of the | |
2535 | objfile_obstack. */ | |
2536 | num_offsets = objfile->num_sections; | |
2537 | offsets = ((struct section_offsets *) | |
2538 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2539 | memcpy (offsets, objfile->section_offsets, | |
2540 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2541 | ||
6d6a12bf | 2542 | objfile->reset_psymtabs (); |
41664b45 DG |
2543 | |
2544 | /* NB: after this call to obstack_free, objfiles_changed | |
2545 | will need to be called (see discussion below). */ | |
9cce227f TG |
2546 | obstack_free (&objfile->objfile_obstack, 0); |
2547 | objfile->sections = NULL; | |
43f3e411 | 2548 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2549 | objfile->template_symbols = NULL; |
22ad8107 | 2550 | objfile->static_links = NULL; |
9cce227f | 2551 | |
9cce227f TG |
2552 | /* obstack_init also initializes the obstack so it is |
2553 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2554 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2555 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2556 | |
846060df JB |
2557 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2558 | data on the objfile's obstack (if sharing data across | |
2559 | multiple users is not possible), so it's important to | |
2560 | do it *after* the obstack has been initialized. */ | |
2561 | set_objfile_per_bfd (objfile); | |
2562 | ||
224c3ddb | 2563 | objfile->original_name |
c0c9f665 TT |
2564 | = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2565 | original_name.c_str (), | |
2566 | original_name.size ()); | |
24ba069a | 2567 | |
779bd270 DE |
2568 | /* Reset the sym_fns pointer. The ELF reader can change it |
2569 | based on whether .gdb_index is present, and we need it to | |
2570 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2571 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2572 | |
d82ea6a8 | 2573 | build_objfile_section_table (objfile); |
9cce227f TG |
2574 | terminate_minimal_symbol_table (objfile); |
2575 | ||
2576 | /* We use the same section offsets as from last time. I'm not | |
2577 | sure whether that is always correct for shared libraries. */ | |
2578 | objfile->section_offsets = (struct section_offsets *) | |
2579 | obstack_alloc (&objfile->objfile_obstack, | |
2580 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2581 | memcpy (objfile->section_offsets, offsets, | |
2582 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2583 | objfile->num_sections = num_offsets; | |
2584 | ||
2585 | /* What the hell is sym_new_init for, anyway? The concept of | |
2586 | distinguishing between the main file and additional files | |
2587 | in this way seems rather dubious. */ | |
2588 | if (objfile == symfile_objfile) | |
c906108c | 2589 | { |
9cce227f | 2590 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2591 | } |
9cce227f TG |
2592 | |
2593 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2594 | clear_complaints (); |
608e2dbb TT |
2595 | |
2596 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2597 | |
2598 | /* We are about to read new symbols and potentially also | |
2599 | DWARF information. Some targets may want to pass addresses | |
2600 | read from DWARF DIE's through an adjustment function before | |
2601 | saving them, like MIPS, which may call into | |
2602 | "find_pc_section". When called, that function will make | |
2603 | use of per-objfile program space data. | |
2604 | ||
2605 | Since we discarded our section information above, we have | |
2606 | dangling pointers in the per-objfile program space data | |
2607 | structure. Force GDB to update the section mapping | |
2608 | information by letting it know the objfile has changed, | |
2609 | making the dangling pointers point to correct data | |
2610 | again. */ | |
2611 | ||
2612 | objfiles_changed (); | |
2613 | ||
608e2dbb | 2614 | read_symbols (objfile, 0); |
b11896a5 | 2615 | |
9cce227f | 2616 | if (!objfile_has_symbols (objfile)) |
c906108c | 2617 | { |
9cce227f | 2618 | wrap_here (""); |
22068491 | 2619 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2620 | wrap_here (""); |
c5aa993b | 2621 | } |
9cce227f TG |
2622 | |
2623 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2624 | clear_complaints (); |
9cce227f TG |
2625 | |
2626 | /* Getting new symbols may change our opinion about what is | |
2627 | frameless. */ | |
2628 | ||
2629 | reinit_frame_cache (); | |
2630 | ||
2631 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2632 | objfile_holder.release (); |
286526c1 | 2633 | defer_clear_users.release (); |
9cce227f TG |
2634 | |
2635 | /* If the mtime has changed between the time we set new_modtime | |
2636 | and now, we *want* this to be out of date, so don't call stat | |
2637 | again now. */ | |
2638 | objfile->mtime = new_modtime; | |
9cce227f | 2639 | init_entry_point_info (objfile); |
4ac39b97 | 2640 | |
4c404b8b | 2641 | new_objfiles.push_back (objfile); |
c906108c SS |
2642 | } |
2643 | } | |
c906108c | 2644 | |
4c404b8b | 2645 | if (!new_objfiles.empty ()) |
ea53e89f | 2646 | { |
c1e56572 | 2647 | clear_symtab_users (0); |
4ac39b97 JK |
2648 | |
2649 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2650 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2651 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2652 | for (auto iter : new_objfiles) |
c486b610 | 2653 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2654 | |
ea53e89f JB |
2655 | /* At least one objfile has changed, so we can consider that |
2656 | the executable we're debugging has changed too. */ | |
76727919 | 2657 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2658 | } |
c906108c | 2659 | } |
c906108c SS |
2660 | \f |
2661 | ||
593e3209 | 2662 | struct filename_language |
c5aa993b | 2663 | { |
593e3209 SM |
2664 | filename_language (const std::string &ext_, enum language lang_) |
2665 | : ext (ext_), lang (lang_) | |
2666 | {} | |
3fcf0b0d | 2667 | |
593e3209 SM |
2668 | std::string ext; |
2669 | enum language lang; | |
2670 | }; | |
c906108c | 2671 | |
593e3209 | 2672 | static std::vector<filename_language> filename_language_table; |
c906108c | 2673 | |
56618e20 TT |
2674 | /* See symfile.h. */ |
2675 | ||
2676 | void | |
2677 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2678 | { |
593e3209 | 2679 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2680 | } |
2681 | ||
2682 | static char *ext_args; | |
920d2a44 AC |
2683 | static void |
2684 | show_ext_args (struct ui_file *file, int from_tty, | |
2685 | struct cmd_list_element *c, const char *value) | |
2686 | { | |
3e43a32a MS |
2687 | fprintf_filtered (file, |
2688 | _("Mapping between filename extension " | |
2689 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2690 | value); |
2691 | } | |
c906108c SS |
2692 | |
2693 | static void | |
eb4c3f4a TT |
2694 | set_ext_lang_command (const char *args, |
2695 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2696 | { |
c906108c SS |
2697 | char *cp = ext_args; |
2698 | enum language lang; | |
2699 | ||
c378eb4e | 2700 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2701 | if (*cp != '.') |
8a3fe4f8 | 2702 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2703 | |
2704 | /* Find end of first arg. */ | |
c5aa993b | 2705 | while (*cp && !isspace (*cp)) |
c906108c SS |
2706 | cp++; |
2707 | ||
2708 | if (*cp == '\0') | |
3e43a32a MS |
2709 | error (_("'%s': two arguments required -- " |
2710 | "filename extension and language"), | |
c906108c SS |
2711 | ext_args); |
2712 | ||
c378eb4e | 2713 | /* Null-terminate first arg. */ |
c5aa993b | 2714 | *cp++ = '\0'; |
c906108c SS |
2715 | |
2716 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2717 | cp = skip_spaces (cp); |
c906108c SS |
2718 | |
2719 | if (*cp == '\0') | |
3e43a32a MS |
2720 | error (_("'%s': two arguments required -- " |
2721 | "filename extension and language"), | |
c906108c SS |
2722 | ext_args); |
2723 | ||
2724 | /* Lookup the language from among those we know. */ | |
2725 | lang = language_enum (cp); | |
2726 | ||
593e3209 | 2727 | auto it = filename_language_table.begin (); |
c906108c | 2728 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2729 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2730 | { |
593e3209 | 2731 | if (it->ext == ext_args) |
3fcf0b0d TT |
2732 | break; |
2733 | } | |
c906108c | 2734 | |
593e3209 | 2735 | if (it == filename_language_table.end ()) |
c906108c | 2736 | { |
c378eb4e | 2737 | /* New file extension. */ |
c906108c SS |
2738 | add_filename_language (ext_args, lang); |
2739 | } | |
2740 | else | |
2741 | { | |
c378eb4e | 2742 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2743 | |
2744 | /* if (from_tty) */ | |
2745 | /* query ("Really make files of type %s '%s'?", */ | |
2746 | /* ext_args, language_str (lang)); */ | |
2747 | ||
593e3209 | 2748 | it->lang = lang; |
c906108c SS |
2749 | } |
2750 | } | |
2751 | ||
2752 | static void | |
1d12d88f | 2753 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2754 | { |
a3f17187 | 2755 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2756 | printf_filtered ("\n\n"); |
593e3209 SM |
2757 | for (const filename_language &entry : filename_language_table) |
2758 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2759 | language_str (entry.lang)); | |
c906108c SS |
2760 | } |
2761 | ||
c906108c | 2762 | enum language |
dd786858 | 2763 | deduce_language_from_filename (const char *filename) |
c906108c | 2764 | { |
e6a959d6 | 2765 | const char *cp; |
c906108c SS |
2766 | |
2767 | if (filename != NULL) | |
2768 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2769 | { |
593e3209 SM |
2770 | for (const filename_language &entry : filename_language_table) |
2771 | if (entry.ext == cp) | |
2772 | return entry.lang; | |
3fcf0b0d | 2773 | } |
c906108c SS |
2774 | |
2775 | return language_unknown; | |
2776 | } | |
2777 | \f | |
43f3e411 DE |
2778 | /* Allocate and initialize a new symbol table. |
2779 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2780 | |
2781 | struct symtab * | |
43f3e411 | 2782 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2783 | { |
43f3e411 DE |
2784 | struct objfile *objfile = cust->objfile; |
2785 | struct symtab *symtab | |
2786 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2787 | |
19ba03f4 SM |
2788 | symtab->filename |
2789 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2790 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2791 | symtab->fullname = NULL; |
2792 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2793 | |
db0fec5c DE |
2794 | /* This can be very verbose with lots of headers. |
2795 | Only print at higher debug levels. */ | |
2796 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2797 | { |
2798 | /* Be a bit clever with debugging messages, and don't print objfile | |
2799 | every time, only when it changes. */ | |
2800 | static char *last_objfile_name = NULL; | |
2801 | ||
2802 | if (last_objfile_name == NULL | |
4262abfb | 2803 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2804 | { |
2805 | xfree (last_objfile_name); | |
4262abfb | 2806 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2807 | fprintf_filtered (gdb_stdlog, |
2808 | "Creating one or more symtabs for objfile %s ...\n", | |
2809 | last_objfile_name); | |
45cfd468 | 2810 | } |
22068491 TT |
2811 | fprintf_filtered (gdb_stdlog, |
2812 | "Created symtab %s for module %s.\n", | |
2813 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2814 | } |
2815 | ||
43f3e411 DE |
2816 | /* Add it to CUST's list of symtabs. */ |
2817 | if (cust->filetabs == NULL) | |
2818 | { | |
2819 | cust->filetabs = symtab; | |
2820 | cust->last_filetab = symtab; | |
2821 | } | |
2822 | else | |
2823 | { | |
2824 | cust->last_filetab->next = symtab; | |
2825 | cust->last_filetab = symtab; | |
2826 | } | |
2827 | ||
2828 | /* Backlink to the containing compunit symtab. */ | |
2829 | symtab->compunit_symtab = cust; | |
2830 | ||
2831 | return symtab; | |
2832 | } | |
2833 | ||
2834 | /* Allocate and initialize a new compunit. | |
2835 | NAME is the name of the main source file, if there is one, or some | |
2836 | descriptive text if there are no source files. */ | |
2837 | ||
2838 | struct compunit_symtab * | |
2839 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2840 | { | |
2841 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2842 | struct compunit_symtab); | |
2843 | const char *saved_name; | |
2844 | ||
2845 | cu->objfile = objfile; | |
2846 | ||
2847 | /* The name we record here is only for display/debugging purposes. | |
2848 | Just save the basename to avoid path issues (too long for display, | |
2849 | relative vs absolute, etc.). */ | |
2850 | saved_name = lbasename (name); | |
224c3ddb SM |
2851 | cu->name |
2852 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2853 | strlen (saved_name)); | |
43f3e411 DE |
2854 | |
2855 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2856 | ||
2857 | if (symtab_create_debug) | |
2858 | { | |
22068491 TT |
2859 | fprintf_filtered (gdb_stdlog, |
2860 | "Created compunit symtab %s for %s.\n", | |
2861 | host_address_to_string (cu), | |
2862 | cu->name); | |
43f3e411 DE |
2863 | } |
2864 | ||
2865 | return cu; | |
2866 | } | |
2867 | ||
2868 | /* Hook CU to the objfile it comes from. */ | |
2869 | ||
2870 | void | |
2871 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2872 | { | |
2873 | cu->next = cu->objfile->compunit_symtabs; | |
2874 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2875 | } |
c906108c | 2876 | \f |
c5aa993b | 2877 | |
b15cc25c PA |
2878 | /* Reset all data structures in gdb which may contain references to |
2879 | symbol table data. */ | |
c906108c SS |
2880 | |
2881 | void | |
b15cc25c | 2882 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2883 | { |
2884 | /* Someday, we should do better than this, by only blowing away | |
2885 | the things that really need to be blown. */ | |
c0501be5 DJ |
2886 | |
2887 | /* Clear the "current" symtab first, because it is no longer valid. | |
2888 | breakpoint_re_set may try to access the current symtab. */ | |
2889 | clear_current_source_symtab_and_line (); | |
2890 | ||
c906108c | 2891 | clear_displays (); |
1bfeeb0f | 2892 | clear_last_displayed_sal (); |
c906108c | 2893 | clear_pc_function_cache (); |
76727919 | 2894 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 DJ |
2895 | |
2896 | /* Clear globals which might have pointed into a removed objfile. | |
2897 | FIXME: It's not clear which of these are supposed to persist | |
2898 | between expressions and which ought to be reset each time. */ | |
2899 | expression_context_block = NULL; | |
aee1fcdf | 2900 | innermost_block.reset (); |
8756216b DP |
2901 | |
2902 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2903 | varobj_invalidate (); | |
2904 | ||
e700d1b2 JB |
2905 | /* Now that the various caches have been cleared, we can re_set |
2906 | our breakpoints without risking it using stale data. */ | |
2907 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2908 | breakpoint_re_set (); | |
c906108c | 2909 | } |
c906108c | 2910 | \f |
c906108c SS |
2911 | /* OVERLAYS: |
2912 | The following code implements an abstraction for debugging overlay sections. | |
2913 | ||
2914 | The target model is as follows: | |
2915 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2916 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2917 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2918 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2919 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2920 | sections should be considered to be mapped from the VMA to the LMA. |
2921 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2922 | For instance, if a section has been mapped then its contents |
c5aa993b | 2923 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2924 | |
2925 | Two levels of debugger support for overlays are available. One is | |
2926 | "manual", in which the debugger relies on the user to tell it which | |
2927 | overlays are currently mapped. This level of support is | |
2928 | implemented entirely in the core debugger, and the information about | |
2929 | whether a section is mapped is kept in the objfile->obj_section table. | |
2930 | ||
2931 | The second level of support is "automatic", and is only available if | |
2932 | the target-specific code provides functionality to read the target's | |
2933 | overlay mapping table, and translate its contents for the debugger | |
2934 | (by updating the mapped state information in the obj_section tables). | |
2935 | ||
2936 | The interface is as follows: | |
c5aa993b JM |
2937 | User commands: |
2938 | overlay map <name> -- tell gdb to consider this section mapped | |
2939 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2940 | overlay list -- list the sections that GDB thinks are mapped | |
2941 | overlay read-target -- get the target's state of what's mapped | |
2942 | overlay off/manual/auto -- set overlay debugging state | |
2943 | Functional interface: | |
2944 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2945 | section, return that section. | |
5417f6dc | 2946 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2947 | the pc, either in its VMA or its LMA |
714835d5 | 2948 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2949 | section_is_overlay(sect): true if section's VMA != LMA |
2950 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2951 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2952 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2953 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2954 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2955 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2956 | either in VMA or LMA depending on whether | |
c378eb4e | 2957 | the symbol's section is currently mapped. */ |
c906108c SS |
2958 | |
2959 | /* Overlay debugging state: */ | |
2960 | ||
d874f1e2 | 2961 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2962 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2963 | |
c906108c | 2964 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2965 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2966 | SECTION is loaded at an address different from where it will "run". */ |
2967 | ||
2968 | int | |
714835d5 | 2969 | section_is_overlay (struct obj_section *section) |
c906108c | 2970 | { |
714835d5 UW |
2971 | if (overlay_debugging && section) |
2972 | { | |
714835d5 | 2973 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2974 | |
714835d5 UW |
2975 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2976 | && bfd_section_lma (abfd, bfd_section) | |
2977 | != bfd_section_vma (abfd, bfd_section)) | |
2978 | return 1; | |
2979 | } | |
c906108c SS |
2980 | |
2981 | return 0; | |
2982 | } | |
2983 | ||
2984 | /* Function: overlay_invalidate_all (void) | |
2985 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2986 | ||
2987 | static void | |
fba45db2 | 2988 | overlay_invalidate_all (void) |
c906108c | 2989 | { |
c906108c SS |
2990 | struct obj_section *sect; |
2991 | ||
2030c079 | 2992 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
2993 | ALL_OBJFILE_OSECTIONS (objfile, sect) |
2994 | if (section_is_overlay (sect)) | |
2995 | sect->ovly_mapped = -1; | |
c906108c SS |
2996 | } |
2997 | ||
714835d5 | 2998 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2999 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3000 | |
3001 | Access to the ovly_mapped flag is restricted to this function, so | |
3002 | that we can do automatic update. If the global flag | |
3003 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3004 | overlay_invalidate_all. If the mapped state of the particular | |
3005 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3006 | ||
714835d5 UW |
3007 | int |
3008 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3009 | { |
9216df95 UW |
3010 | struct gdbarch *gdbarch; |
3011 | ||
714835d5 | 3012 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3013 | return 0; |
3014 | ||
c5aa993b | 3015 | switch (overlay_debugging) |
c906108c SS |
3016 | { |
3017 | default: | |
d874f1e2 | 3018 | case ovly_off: |
c5aa993b | 3019 | return 0; /* overlay debugging off */ |
d874f1e2 | 3020 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3021 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3022 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3023 | gdbarch = get_objfile_arch (osect->objfile); |
3024 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3025 | { |
3026 | if (overlay_cache_invalid) | |
3027 | { | |
3028 | overlay_invalidate_all (); | |
3029 | overlay_cache_invalid = 0; | |
3030 | } | |
3031 | if (osect->ovly_mapped == -1) | |
9216df95 | 3032 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3033 | } |
86a73007 | 3034 | /* fall thru */ |
d874f1e2 | 3035 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3036 | return osect->ovly_mapped == 1; |
3037 | } | |
3038 | } | |
3039 | ||
c906108c SS |
3040 | /* Function: pc_in_unmapped_range |
3041 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3042 | ||
3043 | CORE_ADDR | |
714835d5 | 3044 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3045 | { |
714835d5 UW |
3046 | if (section_is_overlay (section)) |
3047 | { | |
3048 | bfd *abfd = section->objfile->obfd; | |
3049 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3050 | |
714835d5 UW |
3051 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3052 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3053 | CORE_ADDR offset = obj_section_offset (section); | |
3054 | ||
3055 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3056 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3057 | return 1; | |
3058 | } | |
c906108c | 3059 | |
c906108c SS |
3060 | return 0; |
3061 | } | |
3062 | ||
3063 | /* Function: pc_in_mapped_range | |
3064 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3065 | ||
3066 | CORE_ADDR | |
714835d5 | 3067 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3068 | { |
714835d5 UW |
3069 | if (section_is_overlay (section)) |
3070 | { | |
3071 | if (obj_section_addr (section) <= pc | |
3072 | && pc < obj_section_endaddr (section)) | |
3073 | return 1; | |
3074 | } | |
c906108c | 3075 | |
c906108c SS |
3076 | return 0; |
3077 | } | |
3078 | ||
9ec8e6a0 JB |
3079 | /* Return true if the mapped ranges of sections A and B overlap, false |
3080 | otherwise. */ | |
3b7bacac | 3081 | |
b9362cc7 | 3082 | static int |
714835d5 | 3083 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3084 | { |
714835d5 UW |
3085 | CORE_ADDR a_start = obj_section_addr (a); |
3086 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3087 | CORE_ADDR b_start = obj_section_addr (b); | |
3088 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3089 | |
3090 | return (a_start < b_end && b_start < a_end); | |
3091 | } | |
3092 | ||
c906108c SS |
3093 | /* Function: overlay_unmapped_address (PC, SECTION) |
3094 | Returns the address corresponding to PC in the unmapped (load) range. | |
3095 | May be the same as PC. */ | |
3096 | ||
3097 | CORE_ADDR | |
714835d5 | 3098 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3099 | { |
714835d5 UW |
3100 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3101 | { | |
714835d5 | 3102 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3103 | |
714835d5 UW |
3104 | return pc + bfd_section_lma (abfd, bfd_section) |
3105 | - bfd_section_vma (abfd, bfd_section); | |
3106 | } | |
c906108c SS |
3107 | |
3108 | return pc; | |
3109 | } | |
3110 | ||
3111 | /* Function: overlay_mapped_address (PC, SECTION) | |
3112 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3113 | May be the same as PC. */ | |
3114 | ||
3115 | CORE_ADDR | |
714835d5 | 3116 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3117 | { |
714835d5 UW |
3118 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3119 | { | |
714835d5 | 3120 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3121 | |
714835d5 UW |
3122 | return pc + bfd_section_vma (abfd, bfd_section) |
3123 | - bfd_section_lma (abfd, bfd_section); | |
3124 | } | |
c906108c SS |
3125 | |
3126 | return pc; | |
3127 | } | |
3128 | ||
5417f6dc | 3129 | /* Function: symbol_overlayed_address |
c906108c SS |
3130 | Return one of two addresses (relative to the VMA or to the LMA), |
3131 | depending on whether the section is mapped or not. */ | |
3132 | ||
c5aa993b | 3133 | CORE_ADDR |
714835d5 | 3134 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3135 | { |
3136 | if (overlay_debugging) | |
3137 | { | |
c378eb4e | 3138 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3139 | if (section == 0) |
3140 | return address; | |
c378eb4e MS |
3141 | /* If the symbol's section is not an overlay, just return its |
3142 | address. */ | |
c906108c SS |
3143 | if (!section_is_overlay (section)) |
3144 | return address; | |
c378eb4e | 3145 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3146 | if (section_is_mapped (section)) |
3147 | return address; | |
3148 | /* | |
3149 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3150 | * then return its LOADED address rather than its vma address!! | |
3151 | */ | |
3152 | return overlay_unmapped_address (address, section); | |
3153 | } | |
3154 | return address; | |
3155 | } | |
3156 | ||
5417f6dc | 3157 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3158 | Return the best-match overlay section for PC: |
3159 | If PC matches a mapped overlay section's VMA, return that section. | |
3160 | Else if PC matches an unmapped section's VMA, return that section. | |
3161 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3162 | ||
714835d5 | 3163 | struct obj_section * |
fba45db2 | 3164 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3165 | { |
c906108c SS |
3166 | struct obj_section *osect, *best_match = NULL; |
3167 | ||
3168 | if (overlay_debugging) | |
b631e59b | 3169 | { |
2030c079 | 3170 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3171 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3172 | if (section_is_overlay (osect)) | |
3173 | { | |
3174 | if (pc_in_mapped_range (pc, osect)) | |
3175 | { | |
3176 | if (section_is_mapped (osect)) | |
3177 | return osect; | |
3178 | else | |
3179 | best_match = osect; | |
3180 | } | |
3181 | else if (pc_in_unmapped_range (pc, osect)) | |
3182 | best_match = osect; | |
3183 | } | |
b631e59b | 3184 | } |
714835d5 | 3185 | return best_match; |
c906108c SS |
3186 | } |
3187 | ||
3188 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3189 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3190 | currently marked as MAPPED, return that section. Else return NULL. */ |
3191 | ||
714835d5 | 3192 | struct obj_section * |
fba45db2 | 3193 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3194 | { |
c906108c SS |
3195 | struct obj_section *osect; |
3196 | ||
3197 | if (overlay_debugging) | |
b631e59b | 3198 | { |
2030c079 | 3199 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3200 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3201 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3202 | return osect; | |
b631e59b | 3203 | } |
c906108c SS |
3204 | |
3205 | return NULL; | |
3206 | } | |
3207 | ||
3208 | /* Function: list_overlays_command | |
c378eb4e | 3209 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3210 | |
5d3055ad | 3211 | static void |
2cf311eb | 3212 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3213 | { |
c5aa993b | 3214 | int nmapped = 0; |
c906108c SS |
3215 | struct obj_section *osect; |
3216 | ||
3217 | if (overlay_debugging) | |
b631e59b | 3218 | { |
2030c079 | 3219 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3220 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3221 | if (section_is_mapped (osect)) | |
3222 | { | |
3223 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3224 | const char *name; | |
3225 | bfd_vma lma, vma; | |
3226 | int size; | |
3227 | ||
3228 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3229 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3230 | size = bfd_get_section_size (osect->the_bfd_section); | |
3231 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3232 | ||
3233 | printf_filtered ("Section %s, loaded at ", name); | |
3234 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3235 | puts_filtered (" - "); | |
3236 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3237 | printf_filtered (", mapped at "); | |
3238 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3239 | puts_filtered (" - "); | |
3240 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3241 | puts_filtered ("\n"); | |
3242 | ||
3243 | nmapped++; | |
3244 | } | |
b631e59b | 3245 | } |
c906108c | 3246 | if (nmapped == 0) |
a3f17187 | 3247 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3248 | } |
3249 | ||
3250 | /* Function: map_overlay_command | |
3251 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3252 | ||
5d3055ad | 3253 | static void |
2cf311eb | 3254 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3255 | { |
c5aa993b | 3256 | struct obj_section *sec, *sec2; |
c906108c SS |
3257 | |
3258 | if (!overlay_debugging) | |
3e43a32a MS |
3259 | error (_("Overlay debugging not enabled. Use " |
3260 | "either the 'overlay auto' or\n" | |
3261 | "the 'overlay manual' command.")); | |
c906108c SS |
3262 | |
3263 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3264 | error (_("Argument required: name of an overlay section")); |
c906108c | 3265 | |
c378eb4e | 3266 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3267 | for (objfile *obj_file : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3268 | ALL_OBJFILE_OSECTIONS (obj_file, sec) |
3269 | if (!strcmp (bfd_section_name (obj_file->obfd, sec->the_bfd_section), | |
3270 | args)) | |
c5aa993b | 3271 | { |
3b9d3ac2 TT |
3272 | /* Now, check to see if the section is an overlay. */ |
3273 | if (!section_is_overlay (sec)) | |
3274 | continue; /* not an overlay section */ | |
3275 | ||
3276 | /* Mark the overlay as "mapped". */ | |
3277 | sec->ovly_mapped = 1; | |
3278 | ||
3279 | /* Next, make a pass and unmap any sections that are | |
3280 | overlapped by this new section: */ | |
2030c079 | 3281 | for (objfile *objfile2 : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3282 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) |
3283 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3284 | sec2)) | |
3285 | { | |
3286 | if (info_verbose) | |
3287 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
3288 | bfd_section_name (obj_file->obfd, | |
3289 | sec2->the_bfd_section)); | |
3290 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ | |
3291 | } | |
3292 | return; | |
c5aa993b | 3293 | } |
8a3fe4f8 | 3294 | error (_("No overlay section called %s"), args); |
c906108c SS |
3295 | } |
3296 | ||
3297 | /* Function: unmap_overlay_command | |
5417f6dc | 3298 | Mark the overlay section as unmapped |
c906108c SS |
3299 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3300 | ||
5d3055ad | 3301 | static void |
2cf311eb | 3302 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3303 | { |
7a270e0c | 3304 | struct obj_section *sec = NULL; |
c906108c SS |
3305 | |
3306 | if (!overlay_debugging) | |
3e43a32a MS |
3307 | error (_("Overlay debugging not enabled. " |
3308 | "Use either the 'overlay auto' or\n" | |
3309 | "the 'overlay manual' command.")); | |
c906108c SS |
3310 | |
3311 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3312 | error (_("Argument required: name of an overlay section")); |
c906108c | 3313 | |
c378eb4e | 3314 | /* First, find a section matching the user supplied argument. */ |
2030c079 | 3315 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3316 | ALL_OBJFILE_OSECTIONS (objfile, sec) |
3317 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
3318 | { | |
3319 | if (!sec->ovly_mapped) | |
3320 | error (_("Section %s is not mapped"), args); | |
3321 | sec->ovly_mapped = 0; | |
3322 | return; | |
3323 | } | |
8a3fe4f8 | 3324 | error (_("No overlay section called %s"), args); |
c906108c SS |
3325 | } |
3326 | ||
3327 | /* Function: overlay_auto_command | |
3328 | A utility command to turn on overlay debugging. | |
c378eb4e | 3329 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3330 | |
3331 | static void | |
2cf311eb | 3332 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3333 | { |
d874f1e2 | 3334 | overlay_debugging = ovly_auto; |
1900040c | 3335 | enable_overlay_breakpoints (); |
c906108c | 3336 | if (info_verbose) |
a3f17187 | 3337 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3338 | } |
3339 | ||
3340 | /* Function: overlay_manual_command | |
3341 | A utility command to turn on overlay debugging. | |
c378eb4e | 3342 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3343 | |
3344 | static void | |
2cf311eb | 3345 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3346 | { |
d874f1e2 | 3347 | overlay_debugging = ovly_on; |
1900040c | 3348 | disable_overlay_breakpoints (); |
c906108c | 3349 | if (info_verbose) |
a3f17187 | 3350 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3351 | } |
3352 | ||
3353 | /* Function: overlay_off_command | |
3354 | A utility command to turn on overlay debugging. | |
c378eb4e | 3355 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3356 | |
3357 | static void | |
2cf311eb | 3358 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3359 | { |
d874f1e2 | 3360 | overlay_debugging = ovly_off; |
1900040c | 3361 | disable_overlay_breakpoints (); |
c906108c | 3362 | if (info_verbose) |
a3f17187 | 3363 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3364 | } |
3365 | ||
3366 | static void | |
2cf311eb | 3367 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3368 | { |
e17c207e UW |
3369 | struct gdbarch *gdbarch = get_current_arch (); |
3370 | ||
3371 | if (gdbarch_overlay_update_p (gdbarch)) | |
3372 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3373 | else |
8a3fe4f8 | 3374 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3375 | } |
3376 | ||
3377 | /* Function: overlay_command | |
c378eb4e | 3378 | A place-holder for a mis-typed command. */ |
c906108c | 3379 | |
c378eb4e | 3380 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3381 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3382 | |
3383 | static void | |
981a3fb3 | 3384 | overlay_command (const char *args, int from_tty) |
c906108c | 3385 | { |
c5aa993b | 3386 | printf_unfiltered |
c906108c | 3387 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3388 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3389 | } |
3390 | ||
c906108c SS |
3391 | /* Target Overlays for the "Simplest" overlay manager: |
3392 | ||
5417f6dc RM |
3393 | This is GDB's default target overlay layer. It works with the |
3394 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3395 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3396 | so targets that use a different runtime overlay manager can |
c906108c SS |
3397 | substitute their own overlay_update function and take over the |
3398 | function pointer. | |
3399 | ||
3400 | The overlay_update function pokes around in the target's data structures | |
3401 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3402 | this information. | |
3403 | ||
3404 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3405 | unsigned _novlys; /# number of overlay sections #/ |
3406 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3407 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3408 | {..., ..., ..., ...}, |
3409 | } | |
3410 | unsigned _novly_regions; /# number of overlay regions #/ | |
3411 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3412 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3413 | {..., ..., ...}, |
3414 | } | |
c906108c SS |
3415 | These functions will attempt to update GDB's mappedness state in the |
3416 | symbol section table, based on the target's mappedness state. | |
3417 | ||
3418 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3419 | attempt to detect when the cached copy is invalidated. The main | |
3420 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3421 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3422 | the target (whenever possible). */ |
c906108c SS |
3423 | |
3424 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3425 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3426 | static unsigned cache_novlys = 0; |
c906108c | 3427 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3428 | enum ovly_index |
3429 | { | |
438e1e42 | 3430 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3431 | }; |
c906108c | 3432 | |
c378eb4e | 3433 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3434 | |
c906108c | 3435 | static void |
fba45db2 | 3436 | simple_free_overlay_table (void) |
c906108c SS |
3437 | { |
3438 | if (cache_ovly_table) | |
b8c9b27d | 3439 | xfree (cache_ovly_table); |
c5aa993b | 3440 | cache_novlys = 0; |
c906108c SS |
3441 | cache_ovly_table = NULL; |
3442 | cache_ovly_table_base = 0; | |
3443 | } | |
3444 | ||
9216df95 | 3445 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3446 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3447 | |
c906108c | 3448 | static void |
9216df95 | 3449 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3450 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3451 | { |
c378eb4e | 3452 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3453 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3454 | int i; |
c906108c | 3455 | |
9216df95 | 3456 | read_memory (memaddr, buf, len * size); |
c906108c | 3457 | for (i = 0; i < len; i++) |
e17a4113 | 3458 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3459 | } |
3460 | ||
3461 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3462 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3463 | |
c5aa993b | 3464 | static int |
fba45db2 | 3465 | simple_read_overlay_table (void) |
c906108c | 3466 | { |
3b7344d5 | 3467 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3468 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3469 | struct gdbarch *gdbarch; |
3470 | int word_size; | |
e17a4113 | 3471 | enum bfd_endian byte_order; |
c906108c SS |
3472 | |
3473 | simple_free_overlay_table (); | |
9b27852e | 3474 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3475 | if (! novlys_msym.minsym) |
c906108c | 3476 | { |
8a3fe4f8 | 3477 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3478 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3479 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3480 | return 0; |
c906108c | 3481 | } |
0d43edd1 | 3482 | |
7c7b6655 TT |
3483 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3484 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3485 | { |
8a3fe4f8 | 3486 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3487 | "`_ovly_table' array\n" |
8a3fe4f8 | 3488 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3489 | return 0; |
3490 | } | |
3491 | ||
7c7b6655 | 3492 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3493 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3494 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3495 | |
77e371c0 TT |
3496 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3497 | 4, byte_order); | |
0d43edd1 | 3498 | cache_ovly_table |
224c3ddb | 3499 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3500 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3501 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3502 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3503 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3504 | |
c5aa993b | 3505 | return 1; /* SUCCESS */ |
c906108c SS |
3506 | } |
3507 | ||
5417f6dc | 3508 | /* Function: simple_overlay_update_1 |
c906108c SS |
3509 | A helper function for simple_overlay_update. Assuming a cached copy |
3510 | of _ovly_table exists, look through it to find an entry whose vma, | |
3511 | lma and size match those of OSECT. Re-read the entry and make sure | |
3512 | it still matches OSECT (else the table may no longer be valid). | |
3513 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3514 | success, 0 for failure. */ | |
3515 | ||
3516 | static int | |
fba45db2 | 3517 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3518 | { |
764c99c1 | 3519 | int i; |
fbd35540 | 3520 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3521 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3522 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3523 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3524 | |
c906108c | 3525 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3526 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3527 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3528 | { |
9216df95 UW |
3529 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3530 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3531 | 4, word_size, byte_order); |
fbd35540 | 3532 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3533 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3534 | { |
3535 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3536 | return 1; | |
3537 | } | |
c378eb4e | 3538 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3539 | return 0; |
3540 | } | |
3541 | return 0; | |
3542 | } | |
3543 | ||
3544 | /* Function: simple_overlay_update | |
5417f6dc RM |
3545 | If OSECT is NULL, then update all sections' mapped state |
3546 | (after re-reading the entire target _ovly_table). | |
3547 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3548 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3549 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3550 | re-read the entire cache, and go ahead and update all sections. */ |
3551 | ||
1c772458 | 3552 | void |
fba45db2 | 3553 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3554 | { |
c378eb4e | 3555 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3556 | if (osect) |
c378eb4e | 3557 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3558 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3559 | { |
3560 | /* Does its cached location match what's currently in the | |
3561 | symtab? */ | |
3b7344d5 | 3562 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3563 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3564 | ||
3b7344d5 | 3565 | if (minsym.minsym == NULL) |
9cc89665 MS |
3566 | error (_("Error reading inferior's overlay table: couldn't " |
3567 | "find `_ovly_table' array\n" | |
3568 | "in inferior. Use `overlay manual' mode.")); | |
3569 | ||
77e371c0 | 3570 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3571 | /* Then go ahead and try to look up this single section in |
3572 | the cache. */ | |
3573 | if (simple_overlay_update_1 (osect)) | |
3574 | /* Found it! We're done. */ | |
3575 | return; | |
3576 | } | |
c906108c SS |
3577 | |
3578 | /* Cached table no good: need to read the entire table anew. | |
3579 | Or else we want all the sections, in which case it's actually | |
3580 | more efficient to read the whole table in one block anyway. */ | |
3581 | ||
0d43edd1 JB |
3582 | if (! simple_read_overlay_table ()) |
3583 | return; | |
3584 | ||
c378eb4e | 3585 | /* Now may as well update all sections, even if only one was requested. */ |
2030c079 | 3586 | for (objfile *objfile : current_program_space->objfiles ()) |
3b9d3ac2 TT |
3587 | ALL_OBJFILE_OSECTIONS (objfile, osect) |
3588 | if (section_is_overlay (osect)) | |
3589 | { | |
3590 | int i; | |
3591 | asection *bsect = osect->the_bfd_section; | |
3592 | ||
3593 | for (i = 0; i < cache_novlys; i++) | |
3594 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) | |
3595 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) | |
3596 | { /* obj_section matches i'th entry in ovly_table. */ | |
3597 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3598 | break; /* finished with inner for loop: break out. */ | |
3599 | } | |
3600 | } | |
c906108c SS |
3601 | } |
3602 | ||
086df311 DJ |
3603 | /* Set the output sections and output offsets for section SECTP in |
3604 | ABFD. The relocation code in BFD will read these offsets, so we | |
3605 | need to be sure they're initialized. We map each section to itself, | |
3606 | with no offset; this means that SECTP->vma will be honored. */ | |
3607 | ||
3608 | static void | |
3609 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3610 | { | |
3611 | sectp->output_section = sectp; | |
3612 | sectp->output_offset = 0; | |
3613 | } | |
3614 | ||
ac8035ab TG |
3615 | /* Default implementation for sym_relocate. */ |
3616 | ||
ac8035ab TG |
3617 | bfd_byte * |
3618 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3619 | bfd_byte *buf) | |
3620 | { | |
3019eac3 DE |
3621 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3622 | DWO file. */ | |
3623 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3624 | |
3625 | /* We're only interested in sections with relocation | |
3626 | information. */ | |
3627 | if ((sectp->flags & SEC_RELOC) == 0) | |
3628 | return NULL; | |
3629 | ||
3630 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3631 | all sections begin at 0. */ | |
3632 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3633 | ||
3634 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3635 | } | |
3636 | ||
086df311 DJ |
3637 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3638 | contents are stored in BUF if it is non-NULL, or returned in a | |
3639 | malloc'd buffer otherwise. | |
3640 | ||
3641 | For some platforms and debug info formats, shared libraries contain | |
3642 | relocations against the debug sections (particularly for DWARF-2; | |
3643 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3644 | the version of the linker in use). Also, ELF object files naturally | |
3645 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3646 | the relocations in order to get the locations of symbols correct. |
3647 | Another example that may require relocation processing, is the | |
3648 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3649 | debug section. */ | |
086df311 DJ |
3650 | |
3651 | bfd_byte * | |
ac8035ab TG |
3652 | symfile_relocate_debug_section (struct objfile *objfile, |
3653 | asection *sectp, bfd_byte *buf) | |
086df311 | 3654 | { |
ac8035ab | 3655 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3656 | |
ac8035ab | 3657 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3658 | } |
c906108c | 3659 | |
31d99776 DJ |
3660 | struct symfile_segment_data * |
3661 | get_symfile_segment_data (bfd *abfd) | |
3662 | { | |
00b5771c | 3663 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3664 | |
3665 | if (sf == NULL) | |
3666 | return NULL; | |
3667 | ||
3668 | return sf->sym_segments (abfd); | |
3669 | } | |
3670 | ||
3671 | void | |
3672 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3673 | { | |
3674 | xfree (data->segment_bases); | |
3675 | xfree (data->segment_sizes); | |
3676 | xfree (data->segment_info); | |
3677 | xfree (data); | |
3678 | } | |
3679 | ||
28c32713 JB |
3680 | /* Given: |
3681 | - DATA, containing segment addresses from the object file ABFD, and | |
3682 | the mapping from ABFD's sections onto the segments that own them, | |
3683 | and | |
3684 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3685 | segment addresses reported by the target, | |
3686 | store the appropriate offsets for each section in OFFSETS. | |
3687 | ||
3688 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3689 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3690 | ||
8d385431 DJ |
3691 | If there are more entries, then ignore the extra. The target may |
3692 | not be able to distinguish between an empty data segment and a | |
3693 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3694 | |
31d99776 | 3695 | int |
3189cb12 DE |
3696 | symfile_map_offsets_to_segments (bfd *abfd, |
3697 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3698 | struct section_offsets *offsets, |
3699 | int num_segment_bases, | |
3700 | const CORE_ADDR *segment_bases) | |
3701 | { | |
3702 | int i; | |
3703 | asection *sect; | |
3704 | ||
28c32713 JB |
3705 | /* It doesn't make sense to call this function unless you have some |
3706 | segment base addresses. */ | |
202b96c1 | 3707 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3708 | |
31d99776 DJ |
3709 | /* If we do not have segment mappings for the object file, we |
3710 | can not relocate it by segments. */ | |
3711 | gdb_assert (data != NULL); | |
3712 | gdb_assert (data->num_segments > 0); | |
3713 | ||
31d99776 DJ |
3714 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3715 | { | |
31d99776 DJ |
3716 | int which = data->segment_info[i]; |
3717 | ||
28c32713 JB |
3718 | gdb_assert (0 <= which && which <= data->num_segments); |
3719 | ||
3720 | /* Don't bother computing offsets for sections that aren't | |
3721 | loaded as part of any segment. */ | |
3722 | if (! which) | |
3723 | continue; | |
3724 | ||
3725 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3726 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3727 | if (which > num_segment_bases) |
28c32713 | 3728 | which = num_segment_bases; |
31d99776 | 3729 | |
28c32713 JB |
3730 | offsets->offsets[i] = (segment_bases[which - 1] |
3731 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3732 | } |
3733 | ||
3734 | return 1; | |
3735 | } | |
3736 | ||
3737 | static void | |
3738 | symfile_find_segment_sections (struct objfile *objfile) | |
3739 | { | |
3740 | bfd *abfd = objfile->obfd; | |
3741 | int i; | |
3742 | asection *sect; | |
3743 | struct symfile_segment_data *data; | |
3744 | ||
3745 | data = get_symfile_segment_data (objfile->obfd); | |
3746 | if (data == NULL) | |
3747 | return; | |
3748 | ||
3749 | if (data->num_segments != 1 && data->num_segments != 2) | |
3750 | { | |
3751 | free_symfile_segment_data (data); | |
3752 | return; | |
3753 | } | |
3754 | ||
3755 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3756 | { | |
31d99776 DJ |
3757 | int which = data->segment_info[i]; |
3758 | ||
3759 | if (which == 1) | |
3760 | { | |
3761 | if (objfile->sect_index_text == -1) | |
3762 | objfile->sect_index_text = sect->index; | |
3763 | ||
3764 | if (objfile->sect_index_rodata == -1) | |
3765 | objfile->sect_index_rodata = sect->index; | |
3766 | } | |
3767 | else if (which == 2) | |
3768 | { | |
3769 | if (objfile->sect_index_data == -1) | |
3770 | objfile->sect_index_data = sect->index; | |
3771 | ||
3772 | if (objfile->sect_index_bss == -1) | |
3773 | objfile->sect_index_bss = sect->index; | |
3774 | } | |
3775 | } | |
3776 | ||
3777 | free_symfile_segment_data (data); | |
3778 | } | |
3779 | ||
76ad5e1e NB |
3780 | /* Listen for free_objfile events. */ |
3781 | ||
3782 | static void | |
3783 | symfile_free_objfile (struct objfile *objfile) | |
3784 | { | |
c33b2f12 MM |
3785 | /* Remove the target sections owned by this objfile. */ |
3786 | if (objfile != NULL) | |
76ad5e1e NB |
3787 | remove_target_sections ((void *) objfile); |
3788 | } | |
3789 | ||
540c2971 DE |
3790 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3791 | Expand all symtabs that match the specified criteria. | |
3792 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3793 | ||
3794 | void | |
14bc53a8 PA |
3795 | expand_symtabs_matching |
3796 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3797 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3798 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3799 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3800 | enum search_domain kind) | |
540c2971 | 3801 | { |
2030c079 | 3802 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3803 | { |
3804 | if (objfile->sf) | |
3805 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
3806 | lookup_name, | |
3807 | symbol_matcher, | |
3808 | expansion_notify, kind); | |
3809 | } | |
540c2971 DE |
3810 | } |
3811 | ||
3812 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3813 | Map function FUN over every file. | |
3814 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3815 | ||
3816 | void | |
bb4142cf DE |
3817 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3818 | int need_fullname) | |
540c2971 | 3819 | { |
2030c079 | 3820 | for (objfile *objfile : current_program_space->objfiles ()) |
aed57c53 TT |
3821 | { |
3822 | if (objfile->sf) | |
3823 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3824 | need_fullname); | |
3825 | } | |
540c2971 DE |
3826 | } |
3827 | ||
32fa66eb SM |
3828 | #if GDB_SELF_TEST |
3829 | ||
3830 | namespace selftests { | |
3831 | namespace filename_language { | |
3832 | ||
32fa66eb SM |
3833 | static void test_filename_language () |
3834 | { | |
3835 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3836 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3837 | |
3838 | /* Test deducing an unknown extension. */ | |
3839 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3840 | SELF_CHECK (lang == language_unknown); | |
3841 | ||
3842 | /* Test deducing a known extension. */ | |
3843 | lang = deduce_language_from_filename ("myfile.c"); | |
3844 | SELF_CHECK (lang == language_c); | |
3845 | ||
3846 | /* Test adding a new extension using the internal API. */ | |
3847 | add_filename_language (".blah", language_pascal); | |
3848 | lang = deduce_language_from_filename ("myfile.blah"); | |
3849 | SELF_CHECK (lang == language_pascal); | |
3850 | } | |
3851 | ||
3852 | static void | |
3853 | test_set_ext_lang_command () | |
3854 | { | |
3855 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3856 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3857 | |
3858 | /* Confirm that the .hello extension is not known. */ | |
3859 | language lang = deduce_language_from_filename ("cake.hello"); | |
3860 | SELF_CHECK (lang == language_unknown); | |
3861 | ||
3862 | /* Test adding a new extension using the CLI command. */ | |
3863 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3864 | ext_args = args_holder.get (); | |
3865 | set_ext_lang_command (NULL, 1, NULL); | |
3866 | ||
3867 | lang = deduce_language_from_filename ("cake.hello"); | |
3868 | SELF_CHECK (lang == language_rust); | |
3869 | ||
3870 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3871 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3872 | args_holder.reset (xstrdup (".hello pascal")); |
3873 | ext_args = args_holder.get (); | |
3874 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3875 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3876 | |
3877 | lang = deduce_language_from_filename ("cake.hello"); | |
3878 | SELF_CHECK (lang == language_pascal); | |
3879 | SELF_CHECK (size_before == size_after); | |
3880 | } | |
3881 | ||
3882 | } /* namespace filename_language */ | |
3883 | } /* namespace selftests */ | |
3884 | ||
3885 | #endif /* GDB_SELF_TEST */ | |
3886 | ||
c906108c | 3887 | void |
fba45db2 | 3888 | _initialize_symfile (void) |
c906108c SS |
3889 | { |
3890 | struct cmd_list_element *c; | |
c5aa993b | 3891 | |
76727919 | 3892 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3893 | |
97cbe998 | 3894 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3895 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3896 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3897 | faster.\n\ |
3898 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3899 | symbolic debug information." | |
8ca2f0b9 | 3900 | |
1a966eab AC |
3901 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3902 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3903 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3904 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3905 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3906 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3907 | set_cmd_completer (c, filename_completer); |
c906108c | 3908 | |
1a966eab | 3909 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3910 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3911 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3912 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3913 | ADDR is the starting address of the file's text.\n\ |
3914 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3915 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3916 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3917 | OFF is an optional offset which is added to the default load addresses\n\ | |
3918 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3919 | READNOW_READNEVER_HELP), |
c906108c | 3920 | &cmdlist); |
5ba2abeb | 3921 | set_cmd_completer (c, filename_completer); |
c906108c | 3922 | |
63644780 NB |
3923 | c = add_cmd ("remove-symbol-file", class_files, |
3924 | remove_symbol_file_command, _("\ | |
3925 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3926 | Usage: remove-symbol-file FILENAME\n\ | |
3927 | remove-symbol-file -a ADDRESS\n\ | |
3928 | The file to remove can be identified by its filename or by an address\n\ | |
3929 | that lies within the boundaries of this symbol file in memory."), | |
3930 | &cmdlist); | |
3931 | ||
1a966eab AC |
3932 | c = add_cmd ("load", class_files, load_command, _("\ |
3933 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3934 | for access from GDB.\n\ |
8ca2f0b9 | 3935 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3936 | An optional load OFFSET may also be given as a literal address.\n\ |
3937 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3938 | on its own."), &cmdlist); |
5ba2abeb | 3939 | set_cmd_completer (c, filename_completer); |
c906108c | 3940 | |
c5aa993b | 3941 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3942 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3943 | "overlay ", 0, &cmdlist); |
3944 | ||
3945 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3946 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3947 | ||
c5aa993b | 3948 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3949 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3950 | |
c5aa993b | 3951 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3952 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3953 | |
c5aa993b | 3954 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3955 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3956 | |
c5aa993b | 3957 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3958 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3959 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3960 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3961 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3962 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3963 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3964 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3965 | |
3966 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3967 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3968 | &ext_args, _("\ | |
3969 | Set mapping between filename extension and source language."), _("\ | |
3970 | Show mapping between filename extension and source language."), _("\ | |
3971 | Usage: set extension-language .foo bar"), | |
3972 | set_ext_lang_command, | |
920d2a44 | 3973 | show_ext_args, |
26c41df3 | 3974 | &setlist, &showlist); |
c906108c | 3975 | |
c5aa993b | 3976 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3977 | _("All filename extensions associated with a source language.")); |
917317f4 | 3978 | |
525226b5 AC |
3979 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3980 | &debug_file_directory, _("\ | |
24ddea62 JK |
3981 | Set the directories where separate debug symbols are searched for."), _("\ |
3982 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3983 | Separate debug symbols are first searched for in the same\n\ |
3984 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3985 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3986 | each global debug-file-directory component prepended."), |
525226b5 | 3987 | NULL, |
920d2a44 | 3988 | show_debug_file_directory, |
525226b5 | 3989 | &setlist, &showlist); |
770e7fc7 DE |
3990 | |
3991 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3992 | print_symbol_loading_enums, &print_symbol_loading, | |
3993 | _("\ | |
3994 | Set printing of symbol loading messages."), _("\ | |
3995 | Show printing of symbol loading messages."), _("\ | |
3996 | off == turn all messages off\n\ | |
3997 | brief == print messages for the executable,\n\ | |
3998 | and brief messages for shared libraries\n\ | |
3999 | full == print messages for the executable,\n\ | |
4000 | and messages for each shared library."), | |
4001 | NULL, | |
4002 | NULL, | |
4003 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
4004 | |
4005 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
4006 | &separate_debug_file_debug, _("\ | |
4007 | Set printing of separate debug info file search debug."), _("\ | |
4008 | Show printing of separate debug info file search debug."), _("\ | |
4009 | When on, GDB prints the searched locations while looking for separate debug \ | |
4010 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4011 | |
4012 | #if GDB_SELF_TEST | |
4013 | selftests::register_test | |
4014 | ("filename_language", selftests::filename_language::test_filename_language); | |
4015 | selftests::register_test | |
4016 | ("set_ext_lang_command", | |
4017 | selftests::filename_language::test_set_ext_lang_command); | |
4018 | #endif | |
c906108c | 4019 | } |