Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
42a4f53d | 3 | Copyright (C) 1990-2019 Free Software Foundation, Inc. |
8926118c | 4 | |
c906108c SS |
5 | Contributed by Cygnus Support, using pieces from other GDB modules. |
6 | ||
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
e17c207e | 23 | #include "arch-utils.h" |
086df311 | 24 | #include "bfdlink.h" |
c906108c SS |
25 | #include "symtab.h" |
26 | #include "gdbtypes.h" | |
27 | #include "gdbcore.h" | |
28 | #include "frame.h" | |
29 | #include "target.h" | |
30 | #include "value.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
0378c332 | 33 | #include "source.h" |
c906108c SS |
34 | #include "gdbcmd.h" |
35 | #include "breakpoint.h" | |
36 | #include "language.h" | |
37 | #include "complaints.h" | |
38 | #include "demangle.h" | |
fb14de7b UW |
39 | #include "inferior.h" |
40 | #include "regcache.h" | |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
fe898f56 | 48 | #include "block.h" |
76727919 | 49 | #include "observable.h" |
c1bd25fd | 50 | #include "exec.h" |
9bdcbae7 | 51 | #include "parser-defs.h" |
8756216b | 52 | #include "varobj.h" |
77069918 | 53 | #include "elf-bfd.h" |
e85a822c | 54 | #include "solib.h" |
f1838a98 | 55 | #include "remote.h" |
1bfeeb0f | 56 | #include "stack.h" |
cbb099e8 | 57 | #include "gdb_bfd.h" |
529480d0 | 58 | #include "cli/cli-utils.h" |
0efef640 | 59 | #include "common/byte-vector.h" |
32fa66eb | 60 | #include "selftest.h" |
47fd17cd | 61 | #include "cli/cli-style.h" |
c906108c | 62 | |
c906108c SS |
63 | #include <sys/types.h> |
64 | #include <fcntl.h> | |
53ce3c39 | 65 | #include <sys/stat.h> |
c906108c | 66 | #include <ctype.h> |
dcb07cfa | 67 | #include <chrono> |
37e136b1 | 68 | #include <algorithm> |
c906108c | 69 | |
ccefe4c4 | 70 | #include "psymtab.h" |
c906108c | 71 | |
3e43a32a MS |
72 | int (*deprecated_ui_load_progress_hook) (const char *section, |
73 | unsigned long num); | |
9a4105ab | 74 | void (*deprecated_show_load_progress) (const char *section, |
5417f6dc RM |
75 | unsigned long section_sent, |
76 | unsigned long section_size, | |
77 | unsigned long total_sent, | |
c2d11a7d | 78 | unsigned long total_size); |
769d7dc4 AC |
79 | void (*deprecated_pre_add_symbol_hook) (const char *); |
80 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 81 | |
74b7792f AC |
82 | static void clear_symtab_users_cleanup (void *ignore); |
83 | ||
c378eb4e MS |
84 | /* Global variables owned by this file. */ |
85 | int readnow_symbol_files; /* Read full symbols immediately. */ | |
97cbe998 | 86 | int readnever_symbol_files; /* Never read full symbols. */ |
c906108c | 87 | |
c378eb4e | 88 | /* Functions this file defines. */ |
c906108c | 89 | |
ecf45d2c | 90 | static void symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 91 | objfile_flags flags, CORE_ADDR reloff); |
d7db6da9 | 92 | |
00b5771c | 93 | static const struct sym_fns *find_sym_fns (bfd *); |
c906108c | 94 | |
a14ed312 | 95 | static void overlay_invalidate_all (void); |
c906108c | 96 | |
a14ed312 | 97 | static void simple_free_overlay_table (void); |
c906108c | 98 | |
e17a4113 UW |
99 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
100 | enum bfd_endian); | |
c906108c | 101 | |
a14ed312 | 102 | static int simple_read_overlay_table (void); |
c906108c | 103 | |
a14ed312 | 104 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 105 | |
31d99776 DJ |
106 | static void symfile_find_segment_sections (struct objfile *objfile); |
107 | ||
c906108c SS |
108 | /* List of all available sym_fns. On gdb startup, each object file reader |
109 | calls add_symtab_fns() to register information on each format it is | |
c378eb4e | 110 | prepared to read. */ |
c906108c | 111 | |
905014d7 | 112 | struct registered_sym_fns |
c256e171 | 113 | { |
905014d7 SM |
114 | registered_sym_fns (bfd_flavour sym_flavour_, const struct sym_fns *sym_fns_) |
115 | : sym_flavour (sym_flavour_), sym_fns (sym_fns_) | |
116 | {} | |
117 | ||
c256e171 DE |
118 | /* BFD flavour that we handle. */ |
119 | enum bfd_flavour sym_flavour; | |
120 | ||
121 | /* The "vtable" of symbol functions. */ | |
122 | const struct sym_fns *sym_fns; | |
905014d7 | 123 | }; |
c256e171 | 124 | |
905014d7 | 125 | static std::vector<registered_sym_fns> symtab_fns; |
c906108c | 126 | |
770e7fc7 DE |
127 | /* Values for "set print symbol-loading". */ |
128 | ||
129 | const char print_symbol_loading_off[] = "off"; | |
130 | const char print_symbol_loading_brief[] = "brief"; | |
131 | const char print_symbol_loading_full[] = "full"; | |
132 | static const char *print_symbol_loading_enums[] = | |
133 | { | |
134 | print_symbol_loading_off, | |
135 | print_symbol_loading_brief, | |
136 | print_symbol_loading_full, | |
137 | NULL | |
138 | }; | |
139 | static const char *print_symbol_loading = print_symbol_loading_full; | |
140 | ||
b7209cb4 FF |
141 | /* If non-zero, shared library symbols will be added automatically |
142 | when the inferior is created, new libraries are loaded, or when | |
143 | attaching to the inferior. This is almost always what users will | |
144 | want to have happen; but for very large programs, the startup time | |
145 | will be excessive, and so if this is a problem, the user can clear | |
146 | this flag and then add the shared library symbols as needed. Note | |
147 | that there is a potential for confusion, since if the shared | |
c906108c | 148 | library symbols are not loaded, commands like "info fun" will *not* |
0d14a781 | 149 | report all the functions that are actually present. */ |
c906108c SS |
150 | |
151 | int auto_solib_add = 1; | |
c906108c | 152 | \f |
c5aa993b | 153 | |
770e7fc7 DE |
154 | /* Return non-zero if symbol-loading messages should be printed. |
155 | FROM_TTY is the standard from_tty argument to gdb commands. | |
156 | If EXEC is non-zero the messages are for the executable. | |
157 | Otherwise, messages are for shared libraries. | |
158 | If FULL is non-zero then the caller is printing a detailed message. | |
159 | E.g., the message includes the shared library name. | |
160 | Otherwise, the caller is printing a brief "summary" message. */ | |
161 | ||
162 | int | |
163 | print_symbol_loading_p (int from_tty, int exec, int full) | |
164 | { | |
165 | if (!from_tty && !info_verbose) | |
166 | return 0; | |
167 | ||
168 | if (exec) | |
169 | { | |
170 | /* We don't check FULL for executables, there are few such | |
171 | messages, therefore brief == full. */ | |
172 | return print_symbol_loading != print_symbol_loading_off; | |
173 | } | |
174 | if (full) | |
175 | return print_symbol_loading == print_symbol_loading_full; | |
176 | return print_symbol_loading == print_symbol_loading_brief; | |
177 | } | |
178 | ||
0d14a781 | 179 | /* True if we are reading a symbol table. */ |
c906108c SS |
180 | |
181 | int currently_reading_symtab = 0; | |
182 | ||
ccefe4c4 TT |
183 | /* Increment currently_reading_symtab and return a cleanup that can be |
184 | used to decrement it. */ | |
3b7bacac | 185 | |
c83dd867 | 186 | scoped_restore_tmpl<int> |
ccefe4c4 | 187 | increment_reading_symtab (void) |
c906108c | 188 | { |
c83dd867 TT |
189 | gdb_assert (currently_reading_symtab >= 0); |
190 | return make_scoped_restore (¤tly_reading_symtab, | |
191 | currently_reading_symtab + 1); | |
c906108c SS |
192 | } |
193 | ||
5417f6dc RM |
194 | /* Remember the lowest-addressed loadable section we've seen. |
195 | This function is called via bfd_map_over_sections. | |
c906108c SS |
196 | |
197 | In case of equal vmas, the section with the largest size becomes the | |
198 | lowest-addressed loadable section. | |
199 | ||
200 | If the vmas and sizes are equal, the last section is considered the | |
201 | lowest-addressed loadable section. */ | |
202 | ||
203 | void | |
4efb68b1 | 204 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 205 | { |
c5aa993b | 206 | asection **lowest = (asection **) obj; |
c906108c | 207 | |
eb73e134 | 208 | if (0 == (bfd_get_section_flags (abfd, sect) & (SEC_ALLOC | SEC_LOAD))) |
c906108c SS |
209 | return; |
210 | if (!*lowest) | |
211 | *lowest = sect; /* First loadable section */ | |
212 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
213 | *lowest = sect; /* A lower loadable section */ | |
214 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
215 | && (bfd_section_size (abfd, (*lowest)) | |
216 | <= bfd_section_size (abfd, sect))) | |
217 | *lowest = sect; | |
218 | } | |
219 | ||
62557bbc | 220 | /* Build (allocate and populate) a section_addr_info struct from |
c378eb4e | 221 | an existing section table. */ |
62557bbc | 222 | |
37e136b1 | 223 | section_addr_info |
0542c86d PA |
224 | build_section_addr_info_from_section_table (const struct target_section *start, |
225 | const struct target_section *end) | |
62557bbc | 226 | { |
0542c86d | 227 | const struct target_section *stp; |
62557bbc | 228 | |
37e136b1 | 229 | section_addr_info sap; |
62557bbc | 230 | |
37e136b1 | 231 | for (stp = start; stp != end; stp++) |
62557bbc | 232 | { |
2b2848e2 DE |
233 | struct bfd_section *asect = stp->the_bfd_section; |
234 | bfd *abfd = asect->owner; | |
235 | ||
236 | if (bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD) | |
37e136b1 TT |
237 | && sap.size () < end - start) |
238 | sap.emplace_back (stp->addr, | |
239 | bfd_section_name (abfd, asect), | |
240 | gdb_bfd_section_index (abfd, asect)); | |
62557bbc KB |
241 | } |
242 | ||
243 | return sap; | |
244 | } | |
245 | ||
82ccf5a5 | 246 | /* Create a section_addr_info from section offsets in ABFD. */ |
089b4803 | 247 | |
37e136b1 | 248 | static section_addr_info |
82ccf5a5 | 249 | build_section_addr_info_from_bfd (bfd *abfd) |
089b4803 | 250 | { |
089b4803 TG |
251 | struct bfd_section *sec; |
252 | ||
37e136b1 TT |
253 | section_addr_info sap; |
254 | for (sec = abfd->sections; sec != NULL; sec = sec->next) | |
82ccf5a5 | 255 | if (bfd_get_section_flags (abfd, sec) & (SEC_ALLOC | SEC_LOAD)) |
37e136b1 TT |
256 | sap.emplace_back (bfd_get_section_vma (abfd, sec), |
257 | bfd_get_section_name (abfd, sec), | |
258 | gdb_bfd_section_index (abfd, sec)); | |
d76488d8 | 259 | |
089b4803 TG |
260 | return sap; |
261 | } | |
262 | ||
82ccf5a5 JK |
263 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
264 | ||
37e136b1 | 265 | section_addr_info |
82ccf5a5 JK |
266 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
267 | { | |
82ccf5a5 JK |
268 | int i; |
269 | ||
270 | /* Before reread_symbols gets rewritten it is not safe to call: | |
271 | gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd)); | |
272 | */ | |
37e136b1 TT |
273 | section_addr_info sap = build_section_addr_info_from_bfd (objfile->obfd); |
274 | for (i = 0; i < sap.size (); i++) | |
82ccf5a5 | 275 | { |
37e136b1 | 276 | int sectindex = sap[i].sectindex; |
82ccf5a5 | 277 | |
37e136b1 | 278 | sap[i].addr += objfile->section_offsets->offsets[sectindex]; |
82ccf5a5 JK |
279 | } |
280 | return sap; | |
281 | } | |
62557bbc | 282 | |
e8289572 | 283 | /* Initialize OBJFILE's sect_index_* members. */ |
3b7bacac | 284 | |
e8289572 JB |
285 | static void |
286 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 287 | { |
e8289572 | 288 | asection *sect; |
c906108c | 289 | int i; |
5417f6dc | 290 | |
b8fbeb18 | 291 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 292 | if (sect) |
b8fbeb18 EZ |
293 | objfile->sect_index_text = sect->index; |
294 | ||
295 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 296 | if (sect) |
b8fbeb18 EZ |
297 | objfile->sect_index_data = sect->index; |
298 | ||
299 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 300 | if (sect) |
b8fbeb18 EZ |
301 | objfile->sect_index_bss = sect->index; |
302 | ||
303 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 304 | if (sect) |
b8fbeb18 EZ |
305 | objfile->sect_index_rodata = sect->index; |
306 | ||
bbcd32ad FF |
307 | /* This is where things get really weird... We MUST have valid |
308 | indices for the various sect_index_* members or gdb will abort. | |
309 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
310 | accomodate that. First, check for a file with the standard |
311 | one or two segments. */ | |
312 | ||
313 | symfile_find_segment_sections (objfile); | |
314 | ||
315 | /* Except when explicitly adding symbol files at some address, | |
316 | section_offsets contains nothing but zeros, so it doesn't matter | |
317 | which slot in section_offsets the individual sect_index_* members | |
318 | index into. So if they are all zero, it is safe to just point | |
319 | all the currently uninitialized indices to the first slot. But | |
320 | beware: if this is the main executable, it may be relocated | |
321 | later, e.g. by the remote qOffsets packet, and then this will | |
322 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
323 | |
324 | for (i = 0; i < objfile->num_sections; i++) | |
325 | { | |
326 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
327 | { | |
328 | break; | |
329 | } | |
330 | } | |
331 | if (i == objfile->num_sections) | |
332 | { | |
333 | if (objfile->sect_index_text == -1) | |
334 | objfile->sect_index_text = 0; | |
335 | if (objfile->sect_index_data == -1) | |
336 | objfile->sect_index_data = 0; | |
337 | if (objfile->sect_index_bss == -1) | |
338 | objfile->sect_index_bss = 0; | |
339 | if (objfile->sect_index_rodata == -1) | |
340 | objfile->sect_index_rodata = 0; | |
341 | } | |
b8fbeb18 | 342 | } |
c906108c | 343 | |
c1bd25fd DJ |
344 | /* The arguments to place_section. */ |
345 | ||
346 | struct place_section_arg | |
347 | { | |
348 | struct section_offsets *offsets; | |
349 | CORE_ADDR lowest; | |
350 | }; | |
351 | ||
352 | /* Find a unique offset to use for loadable section SECT if | |
353 | the user did not provide an offset. */ | |
354 | ||
2c0b251b | 355 | static void |
c1bd25fd DJ |
356 | place_section (bfd *abfd, asection *sect, void *obj) |
357 | { | |
19ba03f4 | 358 | struct place_section_arg *arg = (struct place_section_arg *) obj; |
c1bd25fd DJ |
359 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; |
360 | int done; | |
3bd72c6f | 361 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 362 | |
2711e456 DJ |
363 | /* We are only interested in allocated sections. */ |
364 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
365 | return; |
366 | ||
367 | /* If the user specified an offset, honor it. */ | |
65cf3563 | 368 | if (offsets[gdb_bfd_section_index (abfd, sect)] != 0) |
c1bd25fd DJ |
369 | return; |
370 | ||
371 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
372 | start_addr = (arg->lowest + align - 1) & -align; |
373 | ||
c1bd25fd DJ |
374 | do { |
375 | asection *cur_sec; | |
c1bd25fd | 376 | |
c1bd25fd DJ |
377 | done = 1; |
378 | ||
379 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
380 | { | |
381 | int indx = cur_sec->index; | |
c1bd25fd DJ |
382 | |
383 | /* We don't need to compare against ourself. */ | |
384 | if (cur_sec == sect) | |
385 | continue; | |
386 | ||
2711e456 DJ |
387 | /* We can only conflict with allocated sections. */ |
388 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
389 | continue; |
390 | ||
391 | /* If the section offset is 0, either the section has not been placed | |
392 | yet, or it was the lowest section placed (in which case LOWEST | |
393 | will be past its end). */ | |
394 | if (offsets[indx] == 0) | |
395 | continue; | |
396 | ||
397 | /* If this section would overlap us, then we must move up. */ | |
398 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
399 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
400 | { | |
401 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
402 | start_addr = (start_addr + align - 1) & -align; | |
403 | done = 0; | |
3bd72c6f | 404 | break; |
c1bd25fd DJ |
405 | } |
406 | ||
407 | /* Otherwise, we appear to be OK. So far. */ | |
408 | } | |
409 | } | |
410 | while (!done); | |
411 | ||
65cf3563 | 412 | offsets[gdb_bfd_section_index (abfd, sect)] = start_addr; |
c1bd25fd | 413 | arg->lowest = start_addr + bfd_get_section_size (sect); |
c1bd25fd | 414 | } |
e8289572 | 415 | |
4f7ae6f5 | 416 | /* Store section_addr_info as prepared (made relative and with SECTINDEX |
75242ef4 JK |
417 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS |
418 | entries. */ | |
e8289572 JB |
419 | |
420 | void | |
75242ef4 JK |
421 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
422 | int num_sections, | |
37e136b1 | 423 | const section_addr_info &addrs) |
e8289572 JB |
424 | { |
425 | int i; | |
426 | ||
75242ef4 | 427 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 428 | |
c378eb4e | 429 | /* Now calculate offsets for section that were specified by the caller. */ |
37e136b1 | 430 | for (i = 0; i < addrs.size (); i++) |
e8289572 | 431 | { |
3189cb12 | 432 | const struct other_sections *osp; |
e8289572 | 433 | |
37e136b1 | 434 | osp = &addrs[i]; |
5488dafb | 435 | if (osp->sectindex == -1) |
e8289572 JB |
436 | continue; |
437 | ||
c378eb4e | 438 | /* Record all sections in offsets. */ |
e8289572 | 439 | /* The section_offsets in the objfile are here filled in using |
c378eb4e | 440 | the BFD index. */ |
75242ef4 JK |
441 | section_offsets->offsets[osp->sectindex] = osp->addr; |
442 | } | |
443 | } | |
444 | ||
1276c759 JK |
445 | /* Transform section name S for a name comparison. prelink can split section |
446 | `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly | |
447 | prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address | |
448 | of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss' | |
449 | (`.sbss') section has invalid (increased) virtual address. */ | |
450 | ||
451 | static const char * | |
452 | addr_section_name (const char *s) | |
453 | { | |
454 | if (strcmp (s, ".dynbss") == 0) | |
455 | return ".bss"; | |
456 | if (strcmp (s, ".sdynbss") == 0) | |
457 | return ".sbss"; | |
458 | ||
459 | return s; | |
460 | } | |
461 | ||
37e136b1 TT |
462 | /* std::sort comparator for addrs_section_sort. Sort entries in |
463 | ascending order by their (name, sectindex) pair. sectindex makes | |
464 | the sort by name stable. */ | |
82ccf5a5 | 465 | |
37e136b1 TT |
466 | static bool |
467 | addrs_section_compar (const struct other_sections *a, | |
468 | const struct other_sections *b) | |
82ccf5a5 | 469 | { |
22e048c9 | 470 | int retval; |
82ccf5a5 | 471 | |
37e136b1 TT |
472 | retval = strcmp (addr_section_name (a->name.c_str ()), |
473 | addr_section_name (b->name.c_str ())); | |
474 | if (retval != 0) | |
475 | return retval < 0; | |
82ccf5a5 | 476 | |
37e136b1 | 477 | return a->sectindex < b->sectindex; |
82ccf5a5 JK |
478 | } |
479 | ||
37e136b1 | 480 | /* Provide sorted array of pointers to sections of ADDRS. */ |
82ccf5a5 | 481 | |
37e136b1 TT |
482 | static std::vector<const struct other_sections *> |
483 | addrs_section_sort (const section_addr_info &addrs) | |
82ccf5a5 | 484 | { |
82ccf5a5 JK |
485 | int i; |
486 | ||
37e136b1 TT |
487 | std::vector<const struct other_sections *> array (addrs.size ()); |
488 | for (i = 0; i < addrs.size (); i++) | |
489 | array[i] = &addrs[i]; | |
82ccf5a5 | 490 | |
37e136b1 | 491 | std::sort (array.begin (), array.end (), addrs_section_compar); |
82ccf5a5 JK |
492 | |
493 | return array; | |
494 | } | |
495 | ||
75242ef4 | 496 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in |
672d9c23 JK |
497 | also SECTINDEXes specific to ABFD there. This function can be used to |
498 | rebase ADDRS to start referencing different BFD than before. */ | |
75242ef4 JK |
499 | |
500 | void | |
37e136b1 | 501 | addr_info_make_relative (section_addr_info *addrs, bfd *abfd) |
75242ef4 JK |
502 | { |
503 | asection *lower_sect; | |
75242ef4 JK |
504 | CORE_ADDR lower_offset; |
505 | int i; | |
506 | ||
507 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
508 | continguous sections. */ |
509 | lower_sect = NULL; | |
510 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
511 | if (lower_sect == NULL) |
512 | { | |
513 | warning (_("no loadable sections found in added symbol-file %s"), | |
514 | bfd_get_filename (abfd)); | |
515 | lower_offset = 0; | |
e8289572 | 516 | } |
75242ef4 JK |
517 | else |
518 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
519 | ||
82ccf5a5 JK |
520 | /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections |
521 | in ABFD. Section names are not unique - there can be multiple sections of | |
522 | the same name. Also the sections of the same name do not have to be | |
523 | adjacent to each other. Some sections may be present only in one of the | |
524 | files. Even sections present in both files do not have to be in the same | |
525 | order. | |
526 | ||
527 | Use stable sort by name for the sections in both files. Then linearly | |
528 | scan both lists matching as most of the entries as possible. */ | |
529 | ||
37e136b1 TT |
530 | std::vector<const struct other_sections *> addrs_sorted |
531 | = addrs_section_sort (*addrs); | |
82ccf5a5 | 532 | |
37e136b1 TT |
533 | section_addr_info abfd_addrs = build_section_addr_info_from_bfd (abfd); |
534 | std::vector<const struct other_sections *> abfd_addrs_sorted | |
535 | = addrs_section_sort (abfd_addrs); | |
82ccf5a5 | 536 | |
c378eb4e MS |
537 | /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and |
538 | ABFD_ADDRS_SORTED. */ | |
82ccf5a5 | 539 | |
37e136b1 TT |
540 | std::vector<const struct other_sections *> |
541 | addrs_to_abfd_addrs (addrs->size (), nullptr); | |
82ccf5a5 | 542 | |
37e136b1 TT |
543 | std::vector<const struct other_sections *>::iterator abfd_sorted_iter |
544 | = abfd_addrs_sorted.begin (); | |
52941706 | 545 | for (const other_sections *sect : addrs_sorted) |
82ccf5a5 | 546 | { |
37e136b1 | 547 | const char *sect_name = addr_section_name (sect->name.c_str ()); |
82ccf5a5 | 548 | |
37e136b1 TT |
549 | while (abfd_sorted_iter != abfd_addrs_sorted.end () |
550 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 551 | sect_name) < 0) |
37e136b1 | 552 | abfd_sorted_iter++; |
82ccf5a5 | 553 | |
37e136b1 TT |
554 | if (abfd_sorted_iter != abfd_addrs_sorted.end () |
555 | && strcmp (addr_section_name ((*abfd_sorted_iter)->name.c_str ()), | |
1276c759 | 556 | sect_name) == 0) |
82ccf5a5 JK |
557 | { |
558 | int index_in_addrs; | |
559 | ||
560 | /* Make the found item directly addressable from ADDRS. */ | |
37e136b1 | 561 | index_in_addrs = sect - addrs->data (); |
82ccf5a5 | 562 | gdb_assert (addrs_to_abfd_addrs[index_in_addrs] == NULL); |
37e136b1 | 563 | addrs_to_abfd_addrs[index_in_addrs] = *abfd_sorted_iter; |
82ccf5a5 JK |
564 | |
565 | /* Never use the same ABFD entry twice. */ | |
37e136b1 | 566 | abfd_sorted_iter++; |
82ccf5a5 | 567 | } |
82ccf5a5 JK |
568 | } |
569 | ||
75242ef4 JK |
570 | /* Calculate offsets for the loadable sections. |
571 | FIXME! Sections must be in order of increasing loadable section | |
572 | so that contiguous sections can use the lower-offset!!! | |
573 | ||
574 | Adjust offsets if the segments are not contiguous. | |
575 | If the section is contiguous, its offset should be set to | |
576 | the offset of the highest loadable section lower than it | |
577 | (the loadable section directly below it in memory). | |
578 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
579 | ||
37e136b1 | 580 | for (i = 0; i < addrs->size (); i++) |
75242ef4 | 581 | { |
37e136b1 | 582 | const struct other_sections *sect = addrs_to_abfd_addrs[i]; |
672d9c23 JK |
583 | |
584 | if (sect) | |
75242ef4 | 585 | { |
c378eb4e | 586 | /* This is the index used by BFD. */ |
37e136b1 | 587 | (*addrs)[i].sectindex = sect->sectindex; |
672d9c23 | 588 | |
37e136b1 | 589 | if ((*addrs)[i].addr != 0) |
75242ef4 | 590 | { |
37e136b1 TT |
591 | (*addrs)[i].addr -= sect->addr; |
592 | lower_offset = (*addrs)[i].addr; | |
75242ef4 JK |
593 | } |
594 | else | |
37e136b1 | 595 | (*addrs)[i].addr = lower_offset; |
75242ef4 JK |
596 | } |
597 | else | |
672d9c23 | 598 | { |
1276c759 | 599 | /* addr_section_name transformation is not used for SECT_NAME. */ |
37e136b1 | 600 | const std::string §_name = (*addrs)[i].name; |
1276c759 | 601 | |
b0fcb67f JK |
602 | /* This section does not exist in ABFD, which is normally |
603 | unexpected and we want to issue a warning. | |
604 | ||
4d9743af JK |
605 | However, the ELF prelinker does create a few sections which are |
606 | marked in the main executable as loadable (they are loaded in | |
607 | memory from the DYNAMIC segment) and yet are not present in | |
608 | separate debug info files. This is fine, and should not cause | |
609 | a warning. Shared libraries contain just the section | |
610 | ".gnu.liblist" but it is not marked as loadable there. There is | |
611 | no other way to identify them than by their name as the sections | |
1276c759 JK |
612 | created by prelink have no special flags. |
613 | ||
614 | For the sections `.bss' and `.sbss' see addr_section_name. */ | |
b0fcb67f | 615 | |
37e136b1 TT |
616 | if (!(sect_name == ".gnu.liblist" |
617 | || sect_name == ".gnu.conflict" | |
618 | || (sect_name == ".bss" | |
1276c759 | 619 | && i > 0 |
37e136b1 | 620 | && (*addrs)[i - 1].name == ".dynbss" |
1276c759 | 621 | && addrs_to_abfd_addrs[i - 1] != NULL) |
37e136b1 | 622 | || (sect_name == ".sbss" |
1276c759 | 623 | && i > 0 |
37e136b1 | 624 | && (*addrs)[i - 1].name == ".sdynbss" |
1276c759 | 625 | && addrs_to_abfd_addrs[i - 1] != NULL))) |
37e136b1 | 626 | warning (_("section %s not found in %s"), sect_name.c_str (), |
b0fcb67f JK |
627 | bfd_get_filename (abfd)); |
628 | ||
37e136b1 TT |
629 | (*addrs)[i].addr = 0; |
630 | (*addrs)[i].sectindex = -1; | |
672d9c23 | 631 | } |
75242ef4 JK |
632 | } |
633 | } | |
634 | ||
635 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
636 | of how to represent it for fast symbol reading. This is the default | |
637 | version of the sym_fns.sym_offsets function for symbol readers that | |
638 | don't need to do anything special. It allocates a section_offsets table | |
639 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
640 | ||
641 | void | |
642 | default_symfile_offsets (struct objfile *objfile, | |
37e136b1 | 643 | const section_addr_info &addrs) |
75242ef4 | 644 | { |
d445b2f6 | 645 | objfile->num_sections = gdb_bfd_count_sections (objfile->obfd); |
75242ef4 JK |
646 | objfile->section_offsets = (struct section_offsets *) |
647 | obstack_alloc (&objfile->objfile_obstack, | |
648 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
649 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
650 | objfile->num_sections, addrs); | |
e8289572 | 651 | |
c1bd25fd DJ |
652 | /* For relocatable files, all loadable sections will start at zero. |
653 | The zero is meaningless, so try to pick arbitrary addresses such | |
654 | that no loadable sections overlap. This algorithm is quadratic, | |
655 | but the number of sections in a single object file is generally | |
656 | small. */ | |
657 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
658 | { | |
659 | struct place_section_arg arg; | |
2711e456 DJ |
660 | bfd *abfd = objfile->obfd; |
661 | asection *cur_sec; | |
2711e456 DJ |
662 | |
663 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
664 | /* We do not expect this to happen; just skip this step if the | |
665 | relocatable file has a section with an assigned VMA. */ | |
666 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
667 | break; | |
668 | ||
669 | if (cur_sec == NULL) | |
670 | { | |
671 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
672 | ||
673 | /* Pick non-overlapping offsets for sections the user did not | |
674 | place explicitly. */ | |
675 | arg.offsets = objfile->section_offsets; | |
676 | arg.lowest = 0; | |
677 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
678 | ||
679 | /* Correctly filling in the section offsets is not quite | |
680 | enough. Relocatable files have two properties that | |
681 | (most) shared objects do not: | |
682 | ||
683 | - Their debug information will contain relocations. Some | |
684 | shared libraries do also, but many do not, so this can not | |
685 | be assumed. | |
686 | ||
687 | - If there are multiple code sections they will be loaded | |
688 | at different relative addresses in memory than they are | |
689 | in the objfile, since all sections in the file will start | |
690 | at address zero. | |
691 | ||
692 | Because GDB has very limited ability to map from an | |
693 | address in debug info to the correct code section, | |
694 | it relies on adding SECT_OFF_TEXT to things which might be | |
695 | code. If we clear all the section offsets, and set the | |
696 | section VMAs instead, then symfile_relocate_debug_section | |
697 | will return meaningful debug information pointing at the | |
698 | correct sections. | |
699 | ||
700 | GDB has too many different data structures for section | |
701 | addresses - a bfd, objfile, and so_list all have section | |
702 | tables, as does exec_ops. Some of these could probably | |
703 | be eliminated. */ | |
704 | ||
705 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
706 | cur_sec = cur_sec->next) | |
707 | { | |
708 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
709 | continue; | |
710 | ||
711 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
3e43a32a MS |
712 | exec_set_section_address (bfd_get_filename (abfd), |
713 | cur_sec->index, | |
30510692 | 714 | offsets[cur_sec->index]); |
2711e456 DJ |
715 | offsets[cur_sec->index] = 0; |
716 | } | |
717 | } | |
c1bd25fd DJ |
718 | } |
719 | ||
e8289572 | 720 | /* Remember the bfd indexes for the .text, .data, .bss and |
c378eb4e | 721 | .rodata sections. */ |
e8289572 JB |
722 | init_objfile_sect_indices (objfile); |
723 | } | |
724 | ||
31d99776 DJ |
725 | /* Divide the file into segments, which are individual relocatable units. |
726 | This is the default version of the sym_fns.sym_segments function for | |
727 | symbol readers that do not have an explicit representation of segments. | |
728 | It assumes that object files do not have segments, and fully linked | |
729 | files have a single segment. */ | |
730 | ||
731 | struct symfile_segment_data * | |
732 | default_symfile_segments (bfd *abfd) | |
733 | { | |
734 | int num_sections, i; | |
735 | asection *sect; | |
736 | struct symfile_segment_data *data; | |
737 | CORE_ADDR low, high; | |
738 | ||
739 | /* Relocatable files contain enough information to position each | |
740 | loadable section independently; they should not be relocated | |
741 | in segments. */ | |
742 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
743 | return NULL; | |
744 | ||
745 | /* Make sure there is at least one loadable section in the file. */ | |
746 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
747 | { | |
748 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
749 | continue; | |
750 | ||
751 | break; | |
752 | } | |
753 | if (sect == NULL) | |
754 | return NULL; | |
755 | ||
756 | low = bfd_get_section_vma (abfd, sect); | |
757 | high = low + bfd_get_section_size (sect); | |
758 | ||
41bf6aca | 759 | data = XCNEW (struct symfile_segment_data); |
31d99776 | 760 | data->num_segments = 1; |
fc270c35 TT |
761 | data->segment_bases = XCNEW (CORE_ADDR); |
762 | data->segment_sizes = XCNEW (CORE_ADDR); | |
31d99776 DJ |
763 | |
764 | num_sections = bfd_count_sections (abfd); | |
fc270c35 | 765 | data->segment_info = XCNEWVEC (int, num_sections); |
31d99776 DJ |
766 | |
767 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
768 | { | |
769 | CORE_ADDR vma; | |
770 | ||
771 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
772 | continue; | |
773 | ||
774 | vma = bfd_get_section_vma (abfd, sect); | |
775 | if (vma < low) | |
776 | low = vma; | |
777 | if (vma + bfd_get_section_size (sect) > high) | |
778 | high = vma + bfd_get_section_size (sect); | |
779 | ||
780 | data->segment_info[i] = 1; | |
781 | } | |
782 | ||
783 | data->segment_bases[0] = low; | |
784 | data->segment_sizes[0] = high - low; | |
785 | ||
786 | return data; | |
787 | } | |
788 | ||
608e2dbb TT |
789 | /* This is a convenience function to call sym_read for OBJFILE and |
790 | possibly force the partial symbols to be read. */ | |
791 | ||
792 | static void | |
b15cc25c | 793 | read_symbols (struct objfile *objfile, symfile_add_flags add_flags) |
608e2dbb TT |
794 | { |
795 | (*objfile->sf->sym_read) (objfile, add_flags); | |
23732b1e | 796 | objfile->per_bfd->minsyms_read = true; |
8a92335b JK |
797 | |
798 | /* find_separate_debug_file_in_section should be called only if there is | |
799 | single binary with no existing separate debug info file. */ | |
800 | if (!objfile_has_partial_symbols (objfile) | |
801 | && objfile->separate_debug_objfile == NULL | |
802 | && objfile->separate_debug_objfile_backlink == NULL) | |
608e2dbb | 803 | { |
192b62ce | 804 | gdb_bfd_ref_ptr abfd (find_separate_debug_file_in_section (objfile)); |
608e2dbb TT |
805 | |
806 | if (abfd != NULL) | |
24ba069a JK |
807 | { |
808 | /* find_separate_debug_file_in_section uses the same filename for the | |
809 | virtual section-as-bfd like the bfd filename containing the | |
810 | section. Therefore use also non-canonical name form for the same | |
811 | file containing the section. */ | |
921222e2 TT |
812 | symbol_file_add_separate (abfd.get (), |
813 | bfd_get_filename (abfd.get ()), | |
814 | add_flags | SYMFILE_NOT_FILENAME, objfile); | |
24ba069a | 815 | } |
608e2dbb TT |
816 | } |
817 | if ((add_flags & SYMFILE_NO_READ) == 0) | |
818 | require_partial_symbols (objfile, 0); | |
819 | } | |
820 | ||
3d6e24f0 JB |
821 | /* Initialize entry point information for this objfile. */ |
822 | ||
823 | static void | |
824 | init_entry_point_info (struct objfile *objfile) | |
825 | { | |
6ef55de7 TT |
826 | struct entry_info *ei = &objfile->per_bfd->ei; |
827 | ||
828 | if (ei->initialized) | |
829 | return; | |
830 | ei->initialized = 1; | |
831 | ||
3d6e24f0 JB |
832 | /* Save startup file's range of PC addresses to help blockframe.c |
833 | decide where the bottom of the stack is. */ | |
834 | ||
835 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
836 | { | |
837 | /* Executable file -- record its entry point so we'll recognize | |
838 | the startup file because it contains the entry point. */ | |
6ef55de7 TT |
839 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
840 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
841 | } |
842 | else if (bfd_get_file_flags (objfile->obfd) & DYNAMIC | |
843 | && bfd_get_start_address (objfile->obfd) != 0) | |
844 | { | |
845 | /* Some shared libraries may have entry points set and be | |
846 | runnable. There's no clear way to indicate this, so just check | |
847 | for values other than zero. */ | |
6ef55de7 TT |
848 | ei->entry_point = bfd_get_start_address (objfile->obfd); |
849 | ei->entry_point_p = 1; | |
3d6e24f0 JB |
850 | } |
851 | else | |
852 | { | |
853 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
6ef55de7 | 854 | ei->entry_point_p = 0; |
3d6e24f0 JB |
855 | } |
856 | ||
6ef55de7 | 857 | if (ei->entry_point_p) |
3d6e24f0 | 858 | { |
53eddfa6 | 859 | struct obj_section *osect; |
6ef55de7 | 860 | CORE_ADDR entry_point = ei->entry_point; |
53eddfa6 | 861 | int found; |
3d6e24f0 JB |
862 | |
863 | /* Make certain that the address points at real code, and not a | |
864 | function descriptor. */ | |
865 | entry_point | |
df6d5441 | 866 | = gdbarch_convert_from_func_ptr_addr (get_objfile_arch (objfile), |
3d6e24f0 | 867 | entry_point, |
8b88a78e | 868 | current_top_target ()); |
3d6e24f0 JB |
869 | |
870 | /* Remove any ISA markers, so that this matches entries in the | |
871 | symbol table. */ | |
6ef55de7 | 872 | ei->entry_point |
df6d5441 | 873 | = gdbarch_addr_bits_remove (get_objfile_arch (objfile), entry_point); |
53eddfa6 TT |
874 | |
875 | found = 0; | |
876 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
877 | { | |
878 | struct bfd_section *sect = osect->the_bfd_section; | |
879 | ||
880 | if (entry_point >= bfd_get_section_vma (objfile->obfd, sect) | |
881 | && entry_point < (bfd_get_section_vma (objfile->obfd, sect) | |
882 | + bfd_get_section_size (sect))) | |
883 | { | |
6ef55de7 | 884 | ei->the_bfd_section_index |
53eddfa6 TT |
885 | = gdb_bfd_section_index (objfile->obfd, sect); |
886 | found = 1; | |
887 | break; | |
888 | } | |
889 | } | |
890 | ||
891 | if (!found) | |
6ef55de7 | 892 | ei->the_bfd_section_index = SECT_OFF_TEXT (objfile); |
3d6e24f0 JB |
893 | } |
894 | } | |
895 | ||
c906108c SS |
896 | /* Process a symbol file, as either the main file or as a dynamically |
897 | loaded file. | |
898 | ||
36e4d068 JB |
899 | This function does not set the OBJFILE's entry-point info. |
900 | ||
96baa820 JM |
901 | OBJFILE is where the symbols are to be read from. |
902 | ||
7e8580c1 JB |
903 | ADDRS is the list of section load addresses. If the user has given |
904 | an 'add-symbol-file' command, then this is the list of offsets and | |
905 | addresses he or she provided as arguments to the command; or, if | |
906 | we're handling a shared library, these are the actual addresses the | |
907 | sections are loaded at, according to the inferior's dynamic linker | |
908 | (as gleaned by GDB's shared library code). We convert each address | |
909 | into an offset from the section VMA's as it appears in the object | |
910 | file, and then call the file's sym_offsets function to convert this | |
911 | into a format-specific offset table --- a `struct section_offsets'. | |
d81a3eaf PT |
912 | The sectindex field is used to control the ordering of sections |
913 | with the same name. Upon return, it is updated to contain the | |
914 | correspondig BFD section index, or -1 if the section was not found. | |
96baa820 | 915 | |
7eedccfa PP |
916 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
917 | an extra symbol file such as dynamically loaded code, and wether | |
918 | breakpoint reset should be deferred. */ | |
c906108c | 919 | |
36e4d068 JB |
920 | static void |
921 | syms_from_objfile_1 (struct objfile *objfile, | |
37e136b1 | 922 | section_addr_info *addrs, |
b15cc25c | 923 | symfile_add_flags add_flags) |
c906108c | 924 | { |
37e136b1 | 925 | section_addr_info local_addr; |
c906108c | 926 | struct cleanup *old_chain; |
7eedccfa | 927 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 928 | |
8fb8eb5c | 929 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
c906108c | 930 | |
75245b24 | 931 | if (objfile->sf == NULL) |
36e4d068 JB |
932 | { |
933 | /* No symbols to load, but we still need to make sure | |
934 | that the section_offsets table is allocated. */ | |
d445b2f6 | 935 | int num_sections = gdb_bfd_count_sections (objfile->obfd); |
a7bfba49 | 936 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_sections); |
36e4d068 JB |
937 | |
938 | objfile->num_sections = num_sections; | |
939 | objfile->section_offsets | |
224c3ddb SM |
940 | = (struct section_offsets *) obstack_alloc (&objfile->objfile_obstack, |
941 | size); | |
36e4d068 JB |
942 | memset (objfile->section_offsets, 0, size); |
943 | return; | |
944 | } | |
75245b24 | 945 | |
c906108c SS |
946 | /* Make sure that partially constructed symbol tables will be cleaned up |
947 | if an error occurs during symbol reading. */ | |
ed2b3126 TT |
948 | old_chain = make_cleanup (null_cleanup, NULL); |
949 | std::unique_ptr<struct objfile> objfile_holder (objfile); | |
c906108c | 950 | |
6bf667bb DE |
951 | /* If ADDRS is NULL, put together a dummy address list. |
952 | We now establish the convention that an addr of zero means | |
c378eb4e | 953 | no load address was specified. */ |
6bf667bb | 954 | if (! addrs) |
37e136b1 | 955 | addrs = &local_addr; |
a39a16c4 | 956 | |
c5aa993b | 957 | if (mainline) |
c906108c SS |
958 | { |
959 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 960 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 961 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
962 | |
963 | /* Since no error yet, throw away the old symbol table. */ | |
964 | ||
965 | if (symfile_objfile != NULL) | |
966 | { | |
9e86da07 | 967 | delete symfile_objfile; |
adb7f338 | 968 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
969 | } |
970 | ||
971 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
972 | If the user wants to get rid of them, they should do "symbol-file" |
973 | without arguments first. Not sure this is the best behavior | |
974 | (PR 2207). */ | |
c906108c | 975 | |
c5aa993b | 976 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
977 | } |
978 | ||
979 | /* Convert addr into an offset rather than an absolute address. | |
980 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 981 | and assume that <addr> is where that got loaded. |
c906108c | 982 | |
53a5351d JM |
983 | We no longer warn if the lowest section is not a text segment (as |
984 | happens for the PA64 port. */ | |
37e136b1 | 985 | if (addrs->size () > 0) |
75242ef4 | 986 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
987 | |
988 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
989 | appear for this new file, and record how verbose to be, then do the | |
c378eb4e | 990 | initial symbol reading for this file. */ |
c906108c | 991 | |
c5aa993b | 992 | (*objfile->sf->sym_init) (objfile); |
5ca8c39f | 993 | clear_complaints (); |
c906108c | 994 | |
37e136b1 | 995 | (*objfile->sf->sym_offsets) (objfile, *addrs); |
c906108c | 996 | |
608e2dbb | 997 | read_symbols (objfile, add_flags); |
b11896a5 | 998 | |
c906108c SS |
999 | /* Discard cleanups as symbol reading was successful. */ |
1000 | ||
ed2b3126 | 1001 | objfile_holder.release (); |
c906108c | 1002 | discard_cleanups (old_chain); |
c906108c SS |
1003 | } |
1004 | ||
36e4d068 JB |
1005 | /* Same as syms_from_objfile_1, but also initializes the objfile |
1006 | entry-point info. */ | |
1007 | ||
6bf667bb | 1008 | static void |
36e4d068 | 1009 | syms_from_objfile (struct objfile *objfile, |
37e136b1 | 1010 | section_addr_info *addrs, |
b15cc25c | 1011 | symfile_add_flags add_flags) |
36e4d068 | 1012 | { |
6bf667bb | 1013 | syms_from_objfile_1 (objfile, addrs, add_flags); |
36e4d068 JB |
1014 | init_entry_point_info (objfile); |
1015 | } | |
1016 | ||
c906108c SS |
1017 | /* Perform required actions after either reading in the initial |
1018 | symbols for a new objfile, or mapping in the symbols from a reusable | |
c1e56572 | 1019 | objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */ |
c5aa993b | 1020 | |
e7d52ed3 | 1021 | static void |
b15cc25c | 1022 | finish_new_objfile (struct objfile *objfile, symfile_add_flags add_flags) |
c906108c | 1023 | { |
c906108c | 1024 | /* If this is the main symbol file we have to clean up all users of the |
c378eb4e | 1025 | old main symbol file. Otherwise it is sufficient to fixup all the |
c906108c | 1026 | breakpoints that may have been redefined by this symbol file. */ |
7eedccfa | 1027 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
1028 | { |
1029 | /* OK, make it the "real" symbol file. */ | |
1030 | symfile_objfile = objfile; | |
1031 | ||
c1e56572 | 1032 | clear_symtab_users (add_flags); |
c906108c | 1033 | } |
7eedccfa | 1034 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 1035 | { |
69de3c6a | 1036 | breakpoint_re_set (); |
c906108c SS |
1037 | } |
1038 | ||
1039 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 1040 | clear_complaints (); |
c906108c SS |
1041 | } |
1042 | ||
1043 | /* Process a symbol file, as either the main file or as a dynamically | |
1044 | loaded file. | |
1045 | ||
5417f6dc | 1046 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
8ac244b4 | 1047 | A new reference is acquired by this function. |
7904e09f | 1048 | |
9e86da07 | 1049 | For NAME description see the objfile constructor. |
24ba069a | 1050 | |
7eedccfa PP |
1051 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
1052 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f | 1053 | |
6bf667bb | 1054 | ADDRS is as described for syms_from_objfile_1, above. |
7eedccfa | 1055 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. |
c906108c | 1056 | |
63524580 JK |
1057 | PARENT is the original objfile if ABFD is a separate debug info file. |
1058 | Otherwise PARENT is NULL. | |
1059 | ||
c906108c | 1060 | Upon success, returns a pointer to the objfile that was added. |
c378eb4e | 1061 | Upon failure, jumps back to command level (never returns). */ |
7eedccfa | 1062 | |
7904e09f | 1063 | static struct objfile * |
b15cc25c PA |
1064 | symbol_file_add_with_addrs (bfd *abfd, const char *name, |
1065 | symfile_add_flags add_flags, | |
37e136b1 | 1066 | section_addr_info *addrs, |
b15cc25c | 1067 | objfile_flags flags, struct objfile *parent) |
c906108c SS |
1068 | { |
1069 | struct objfile *objfile; | |
7eedccfa | 1070 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
0838fb57 | 1071 | const int mainline = add_flags & SYMFILE_MAINLINE; |
770e7fc7 | 1072 | const int should_print = (print_symbol_loading_p (from_tty, mainline, 1) |
b11896a5 TT |
1073 | && (readnow_symbol_files |
1074 | || (add_flags & SYMFILE_NO_READ) == 0)); | |
c906108c | 1075 | |
9291a0cd | 1076 | if (readnow_symbol_files) |
b11896a5 TT |
1077 | { |
1078 | flags |= OBJF_READNOW; | |
1079 | add_flags &= ~SYMFILE_NO_READ; | |
1080 | } | |
97cbe998 SDJ |
1081 | else if (readnever_symbol_files |
1082 | || (parent != NULL && (parent->flags & OBJF_READNEVER))) | |
1083 | { | |
1084 | flags |= OBJF_READNEVER; | |
1085 | add_flags |= SYMFILE_NO_READ; | |
1086 | } | |
921222e2 TT |
1087 | if ((add_flags & SYMFILE_NOT_FILENAME) != 0) |
1088 | flags |= OBJF_NOT_FILENAME; | |
9291a0cd | 1089 | |
5417f6dc RM |
1090 | /* Give user a chance to burp if we'd be |
1091 | interactively wiping out any existing symbols. */ | |
c906108c SS |
1092 | |
1093 | if ((have_full_symbols () || have_partial_symbols ()) | |
0838fb57 | 1094 | && mainline |
c906108c | 1095 | && from_tty |
9e2f0ad4 | 1096 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 1097 | error (_("Not confirmed.")); |
c906108c | 1098 | |
b15cc25c PA |
1099 | if (mainline) |
1100 | flags |= OBJF_MAINLINE; | |
9e86da07 | 1101 | objfile = new struct objfile (abfd, name, flags); |
c906108c | 1102 | |
63524580 JK |
1103 | if (parent) |
1104 | add_separate_debug_objfile (objfile, parent); | |
1105 | ||
78a4a9b9 AC |
1106 | /* We either created a new mapped symbol table, mapped an existing |
1107 | symbol table file which has not had initial symbol reading | |
c378eb4e | 1108 | performed, or need to read an unmapped symbol table. */ |
b11896a5 | 1109 | if (should_print) |
c906108c | 1110 | { |
769d7dc4 AC |
1111 | if (deprecated_pre_add_symbol_hook) |
1112 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1113 | else |
47fd17cd TT |
1114 | { |
1115 | puts_filtered (_("Reading symbols from ")); | |
1116 | fputs_styled (name, file_name_style.style (), gdb_stdout); | |
1117 | puts_filtered ("...\n"); | |
1118 | } | |
c906108c | 1119 | } |
6bf667bb | 1120 | syms_from_objfile (objfile, addrs, add_flags); |
c906108c SS |
1121 | |
1122 | /* We now have at least a partial symbol table. Check to see if the | |
1123 | user requested that all symbols be read on initial access via either | |
1124 | the gdb startup command line or on a per symbol file basis. Expand | |
c378eb4e | 1125 | all partial symbol tables for this objfile if so. */ |
c906108c | 1126 | |
9291a0cd | 1127 | if ((flags & OBJF_READNOW)) |
c906108c | 1128 | { |
b11896a5 | 1129 | if (should_print) |
3453e7e4 | 1130 | printf_filtered (_("Expanding full symbols from %s...\n"), name); |
c906108c | 1131 | |
ccefe4c4 TT |
1132 | if (objfile->sf) |
1133 | objfile->sf->qf->expand_all_symtabs (objfile); | |
c906108c SS |
1134 | } |
1135 | ||
e79497a1 TT |
1136 | /* Note that we only print a message if we have no symbols and have |
1137 | no separate debug file. If there is a separate debug file which | |
1138 | does not have symbols, we'll have emitted this message for that | |
1139 | file, and so printing it twice is just redundant. */ | |
1140 | if (should_print && !objfile_has_symbols (objfile) | |
1141 | && objfile->separate_debug_objfile == nullptr) | |
3453e7e4 | 1142 | printf_filtered (_("(No debugging symbols found in %s)\n"), name); |
cb3c37b2 | 1143 | |
b11896a5 | 1144 | if (should_print) |
c906108c | 1145 | { |
769d7dc4 AC |
1146 | if (deprecated_post_add_symbol_hook) |
1147 | deprecated_post_add_symbol_hook (); | |
c906108c SS |
1148 | } |
1149 | ||
481d0f41 JB |
1150 | /* We print some messages regardless of whether 'from_tty || |
1151 | info_verbose' is true, so make sure they go out at the right | |
1152 | time. */ | |
1153 | gdb_flush (gdb_stdout); | |
1154 | ||
109f874e | 1155 | if (objfile->sf == NULL) |
8caee43b | 1156 | { |
76727919 | 1157 | gdb::observers::new_objfile.notify (objfile); |
c378eb4e | 1158 | return objfile; /* No symbols. */ |
8caee43b | 1159 | } |
109f874e | 1160 | |
e7d52ed3 | 1161 | finish_new_objfile (objfile, add_flags); |
c906108c | 1162 | |
76727919 | 1163 | gdb::observers::new_objfile.notify (objfile); |
c906108c | 1164 | |
ce7d4522 | 1165 | bfd_cache_close_all (); |
c906108c SS |
1166 | return (objfile); |
1167 | } | |
1168 | ||
24ba069a | 1169 | /* Add BFD as a separate debug file for OBJFILE. For NAME description |
9e86da07 | 1170 | see the objfile constructor. */ |
9cce227f TG |
1171 | |
1172 | void | |
b15cc25c PA |
1173 | symbol_file_add_separate (bfd *bfd, const char *name, |
1174 | symfile_add_flags symfile_flags, | |
24ba069a | 1175 | struct objfile *objfile) |
9cce227f | 1176 | { |
089b4803 TG |
1177 | /* Create section_addr_info. We can't directly use offsets from OBJFILE |
1178 | because sections of BFD may not match sections of OBJFILE and because | |
1179 | vma may have been modified by tools such as prelink. */ | |
37e136b1 | 1180 | section_addr_info sap = build_section_addr_info_from_objfile (objfile); |
9cce227f | 1181 | |
870f88f7 | 1182 | symbol_file_add_with_addrs |
37e136b1 | 1183 | (bfd, name, symfile_flags, &sap, |
9cce227f | 1184 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
63524580 JK |
1185 | | OBJF_USERLOADED), |
1186 | objfile); | |
9cce227f | 1187 | } |
7904e09f | 1188 | |
eb4556d7 JB |
1189 | /* Process the symbol file ABFD, as either the main file or as a |
1190 | dynamically loaded file. | |
6bf667bb | 1191 | See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1192 | |
eb4556d7 | 1193 | struct objfile * |
b15cc25c PA |
1194 | symbol_file_add_from_bfd (bfd *abfd, const char *name, |
1195 | symfile_add_flags add_flags, | |
37e136b1 | 1196 | section_addr_info *addrs, |
b15cc25c | 1197 | objfile_flags flags, struct objfile *parent) |
eb4556d7 | 1198 | { |
24ba069a JK |
1199 | return symbol_file_add_with_addrs (abfd, name, add_flags, addrs, flags, |
1200 | parent); | |
eb4556d7 JB |
1201 | } |
1202 | ||
7904e09f | 1203 | /* Process a symbol file, as either the main file or as a dynamically |
6bf667bb | 1204 | loaded file. See symbol_file_add_with_addrs's comments for details. */ |
3b7bacac | 1205 | |
7904e09f | 1206 | struct objfile * |
b15cc25c | 1207 | symbol_file_add (const char *name, symfile_add_flags add_flags, |
37e136b1 | 1208 | section_addr_info *addrs, objfile_flags flags) |
7904e09f | 1209 | { |
192b62ce | 1210 | gdb_bfd_ref_ptr bfd (symfile_bfd_open (name)); |
8ac244b4 | 1211 | |
192b62ce TT |
1212 | return symbol_file_add_from_bfd (bfd.get (), name, add_flags, addrs, |
1213 | flags, NULL); | |
7904e09f JB |
1214 | } |
1215 | ||
d7db6da9 FN |
1216 | /* Call symbol_file_add() with default values and update whatever is |
1217 | affected by the loading of a new main(). | |
1218 | Used when the file is supplied in the gdb command line | |
1219 | and by some targets with special loading requirements. | |
1220 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1221 | argument for the switches that can only be specified in the symbol_file | |
1222 | command itself. */ | |
5417f6dc | 1223 | |
1adeb98a | 1224 | void |
ecf45d2c | 1225 | symbol_file_add_main (const char *args, symfile_add_flags add_flags) |
1adeb98a | 1226 | { |
d4d429d5 | 1227 | symbol_file_add_main_1 (args, add_flags, 0, 0); |
d7db6da9 FN |
1228 | } |
1229 | ||
1230 | static void | |
ecf45d2c | 1231 | symbol_file_add_main_1 (const char *args, symfile_add_flags add_flags, |
d4d429d5 | 1232 | objfile_flags flags, CORE_ADDR reloff) |
d7db6da9 | 1233 | { |
ecf45d2c | 1234 | add_flags |= current_inferior ()->symfile_flags | SYMFILE_MAINLINE; |
7dcd53a0 | 1235 | |
d4d429d5 PT |
1236 | struct objfile *objfile = symbol_file_add (args, add_flags, NULL, flags); |
1237 | if (reloff != 0) | |
1238 | objfile_rebase (objfile, reloff); | |
d7db6da9 | 1239 | |
d7db6da9 FN |
1240 | /* Getting new symbols may change our opinion about |
1241 | what is frameless. */ | |
1242 | reinit_frame_cache (); | |
1243 | ||
b15cc25c | 1244 | if ((add_flags & SYMFILE_NO_READ) == 0) |
7dcd53a0 | 1245 | set_initial_language (); |
1adeb98a FN |
1246 | } |
1247 | ||
1248 | void | |
1249 | symbol_file_clear (int from_tty) | |
1250 | { | |
1251 | if ((have_full_symbols () || have_partial_symbols ()) | |
1252 | && from_tty | |
0430b0d6 AS |
1253 | && (symfile_objfile |
1254 | ? !query (_("Discard symbol table from `%s'? "), | |
4262abfb | 1255 | objfile_name (symfile_objfile)) |
0430b0d6 | 1256 | : !query (_("Discard symbol table? ")))) |
8a3fe4f8 | 1257 | error (_("Not confirmed.")); |
1adeb98a | 1258 | |
0133421a JK |
1259 | /* solib descriptors may have handles to objfiles. Wipe them before their |
1260 | objfiles get stale by free_all_objfiles. */ | |
d10c338d DE |
1261 | no_shared_libraries (NULL, from_tty); |
1262 | ||
0133421a JK |
1263 | free_all_objfiles (); |
1264 | ||
adb7f338 | 1265 | gdb_assert (symfile_objfile == NULL); |
d10c338d | 1266 | if (from_tty) |
22068491 | 1267 | printf_filtered (_("No symbol file now.\n")); |
1adeb98a FN |
1268 | } |
1269 | ||
c4dcb155 SM |
1270 | /* See symfile.h. */ |
1271 | ||
1272 | int separate_debug_file_debug = 0; | |
1273 | ||
5b5d99cf | 1274 | static int |
a8dbfd58 | 1275 | separate_debug_file_exists (const std::string &name, unsigned long crc, |
32a0e547 | 1276 | struct objfile *parent_objfile) |
5b5d99cf | 1277 | { |
904578ed JK |
1278 | unsigned long file_crc; |
1279 | int file_crc_p; | |
32a0e547 | 1280 | struct stat parent_stat, abfd_stat; |
904578ed | 1281 | int verified_as_different; |
32a0e547 JK |
1282 | |
1283 | /* Find a separate debug info file as if symbols would be present in | |
1284 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1285 | section can contain just the basename of PARENT_OBJFILE without any | |
1286 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
c378eb4e | 1287 | the separate debug infos with the same basename can exist. */ |
32a0e547 | 1288 | |
a8dbfd58 | 1289 | if (filename_cmp (name.c_str (), objfile_name (parent_objfile)) == 0) |
32a0e547 | 1290 | return 0; |
5b5d99cf | 1291 | |
c4dcb155 | 1292 | if (separate_debug_file_debug) |
50794b45 SM |
1293 | { |
1294 | printf_filtered (_(" Trying %s..."), name.c_str ()); | |
1295 | gdb_flush (gdb_stdout); | |
1296 | } | |
c4dcb155 | 1297 | |
a8dbfd58 | 1298 | gdb_bfd_ref_ptr abfd (gdb_bfd_open (name.c_str (), gnutarget, -1)); |
f1838a98 | 1299 | |
192b62ce | 1300 | if (abfd == NULL) |
50794b45 SM |
1301 | { |
1302 | if (separate_debug_file_debug) | |
1303 | printf_filtered (_(" no, unable to open.\n")); | |
1304 | ||
1305 | return 0; | |
1306 | } | |
5b5d99cf | 1307 | |
0ba1096a | 1308 | /* Verify symlinks were not the cause of filename_cmp name difference above. |
32a0e547 JK |
1309 | |
1310 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1311 | st_ino; they always set it to zero. (Windows does provide a | |
0a93529c GB |
1312 | meaningful st_dev.) Files accessed from gdbservers that do not |
1313 | support the vFile:fstat packet will also have st_ino set to zero. | |
1314 | Do not indicate a duplicate library in either case. While there | |
1315 | is no guarantee that a system that provides meaningful inode | |
1316 | numbers will never set st_ino to zero, this is merely an | |
1317 | optimization, so we do not need to worry about false negatives. */ | |
32a0e547 | 1318 | |
192b62ce | 1319 | if (bfd_stat (abfd.get (), &abfd_stat) == 0 |
904578ed JK |
1320 | && abfd_stat.st_ino != 0 |
1321 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0) | |
32a0e547 | 1322 | { |
904578ed JK |
1323 | if (abfd_stat.st_dev == parent_stat.st_dev |
1324 | && abfd_stat.st_ino == parent_stat.st_ino) | |
50794b45 SM |
1325 | { |
1326 | if (separate_debug_file_debug) | |
1327 | printf_filtered (_(" no, same file as the objfile.\n")); | |
1328 | ||
1329 | return 0; | |
1330 | } | |
904578ed | 1331 | verified_as_different = 1; |
32a0e547 | 1332 | } |
904578ed JK |
1333 | else |
1334 | verified_as_different = 0; | |
32a0e547 | 1335 | |
192b62ce | 1336 | file_crc_p = gdb_bfd_crc (abfd.get (), &file_crc); |
5b5d99cf | 1337 | |
904578ed | 1338 | if (!file_crc_p) |
50794b45 SM |
1339 | { |
1340 | if (separate_debug_file_debug) | |
1341 | printf_filtered (_(" no, error computing CRC.\n")); | |
1342 | ||
1343 | return 0; | |
1344 | } | |
904578ed | 1345 | |
287ccc17 JK |
1346 | if (crc != file_crc) |
1347 | { | |
dccee2de TT |
1348 | unsigned long parent_crc; |
1349 | ||
0a93529c GB |
1350 | /* If the files could not be verified as different with |
1351 | bfd_stat then we need to calculate the parent's CRC | |
1352 | to verify whether the files are different or not. */ | |
904578ed | 1353 | |
dccee2de | 1354 | if (!verified_as_different) |
904578ed | 1355 | { |
dccee2de | 1356 | if (!gdb_bfd_crc (parent_objfile->obfd, &parent_crc)) |
50794b45 SM |
1357 | { |
1358 | if (separate_debug_file_debug) | |
1359 | printf_filtered (_(" no, error computing CRC.\n")); | |
1360 | ||
1361 | return 0; | |
1362 | } | |
904578ed JK |
1363 | } |
1364 | ||
dccee2de | 1365 | if (verified_as_different || parent_crc != file_crc) |
904578ed JK |
1366 | warning (_("the debug information found in \"%s\"" |
1367 | " does not match \"%s\" (CRC mismatch).\n"), | |
a8dbfd58 | 1368 | name.c_str (), objfile_name (parent_objfile)); |
904578ed | 1369 | |
50794b45 SM |
1370 | if (separate_debug_file_debug) |
1371 | printf_filtered (_(" no, CRC doesn't match.\n")); | |
1372 | ||
287ccc17 JK |
1373 | return 0; |
1374 | } | |
1375 | ||
50794b45 SM |
1376 | if (separate_debug_file_debug) |
1377 | printf_filtered (_(" yes!\n")); | |
1378 | ||
287ccc17 | 1379 | return 1; |
5b5d99cf JB |
1380 | } |
1381 | ||
aa28a74e | 1382 | char *debug_file_directory = NULL; |
920d2a44 AC |
1383 | static void |
1384 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1385 | struct cmd_list_element *c, const char *value) | |
1386 | { | |
3e43a32a MS |
1387 | fprintf_filtered (file, |
1388 | _("The directory where separate debug " | |
1389 | "symbols are searched for is \"%s\".\n"), | |
920d2a44 AC |
1390 | value); |
1391 | } | |
5b5d99cf JB |
1392 | |
1393 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1394 | #define DEBUG_SUBDIRECTORY ".debug" | |
1395 | #endif | |
1396 | ||
1db33378 PP |
1397 | /* Find a separate debuginfo file for OBJFILE, using DIR as the directory |
1398 | where the original file resides (may not be the same as | |
1399 | dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are | |
7edbb660 DE |
1400 | looking for. CANON_DIR is the "realpath" form of DIR. |
1401 | DIR must contain a trailing '/'. | |
a8dbfd58 SM |
1402 | Returns the path of the file with separate debug info, or an empty |
1403 | string. */ | |
1db33378 | 1404 | |
a8dbfd58 | 1405 | static std::string |
1db33378 PP |
1406 | find_separate_debug_file (const char *dir, |
1407 | const char *canon_dir, | |
1408 | const char *debuglink, | |
1409 | unsigned long crc32, struct objfile *objfile) | |
9cce227f | 1410 | { |
c4dcb155 | 1411 | if (separate_debug_file_debug) |
22068491 TT |
1412 | printf_filtered (_("\nLooking for separate debug info (debug link) for " |
1413 | "%s\n"), objfile_name (objfile)); | |
c4dcb155 | 1414 | |
5b5d99cf | 1415 | /* First try in the same directory as the original file. */ |
a8dbfd58 SM |
1416 | std::string debugfile = dir; |
1417 | debugfile += debuglink; | |
5b5d99cf | 1418 | |
32a0e547 | 1419 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1420 | return debugfile; |
5417f6dc | 1421 | |
5b5d99cf | 1422 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
a8dbfd58 SM |
1423 | debugfile = dir; |
1424 | debugfile += DEBUG_SUBDIRECTORY; | |
1425 | debugfile += "/"; | |
1426 | debugfile += debuglink; | |
5b5d99cf | 1427 | |
32a0e547 | 1428 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
1db33378 | 1429 | return debugfile; |
5417f6dc | 1430 | |
24ddea62 | 1431 | /* Then try in the global debugfile directories. |
f888f159 | 1432 | |
24ddea62 JK |
1433 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will |
1434 | cause "/..." lookups. */ | |
5417f6dc | 1435 | |
5d36dfb9 AU |
1436 | bool target_prefix = startswith (dir, "target:"); |
1437 | const char *dir_notarget = target_prefix ? dir + strlen ("target:") : dir; | |
e80aaf61 SM |
1438 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1439 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
24ddea62 | 1440 | |
e80aaf61 | 1441 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1442 | { |
5d36dfb9 AU |
1443 | debugfile = target_prefix ? "target:" : ""; |
1444 | debugfile += debugdir.get (); | |
a8dbfd58 | 1445 | debugfile += "/"; |
5d36dfb9 | 1446 | debugfile += dir_notarget; |
a8dbfd58 | 1447 | debugfile += debuglink; |
aa28a74e | 1448 | |
32a0e547 | 1449 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1450 | return debugfile; |
24ddea62 JK |
1451 | |
1452 | /* If the file is in the sysroot, try using its base path in the | |
1453 | global debugfile directory. */ | |
1db33378 PP |
1454 | if (canon_dir != NULL |
1455 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1456 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1457 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1458 | { |
5d36dfb9 AU |
1459 | debugfile = target_prefix ? "target:" : ""; |
1460 | debugfile += debugdir.get (); | |
a8dbfd58 SM |
1461 | debugfile += (canon_dir + strlen (gdb_sysroot)); |
1462 | debugfile += "/"; | |
1463 | debugfile += debuglink; | |
24ddea62 | 1464 | |
32a0e547 | 1465 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1466 | return debugfile; |
24ddea62 | 1467 | } |
aa28a74e | 1468 | } |
f888f159 | 1469 | |
a8dbfd58 | 1470 | return std::string (); |
1db33378 PP |
1471 | } |
1472 | ||
7edbb660 | 1473 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1474 | If there were no directory separators in PATH, PATH will be empty |
1475 | string on return. */ | |
1476 | ||
1477 | static void | |
1478 | terminate_after_last_dir_separator (char *path) | |
1479 | { | |
1480 | int i; | |
1481 | ||
1482 | /* Strip off the final filename part, leaving the directory name, | |
1483 | followed by a slash. The directory can be relative or absolute. */ | |
1484 | for (i = strlen(path) - 1; i >= 0; i--) | |
1485 | if (IS_DIR_SEPARATOR (path[i])) | |
1486 | break; | |
1487 | ||
1488 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1489 | path[i + 1] = '\0'; | |
1490 | } | |
1491 | ||
1492 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1493 | Returns pathname, or an empty string. */ |
1db33378 | 1494 | |
a8dbfd58 | 1495 | std::string |
1db33378 PP |
1496 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1497 | { | |
1db33378 | 1498 | unsigned long crc32; |
1db33378 | 1499 | |
5eae7aea TT |
1500 | gdb::unique_xmalloc_ptr<char> debuglink |
1501 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1502 | |
1503 | if (debuglink == NULL) | |
1504 | { | |
1505 | /* There's no separate debug info, hence there's no way we could | |
1506 | load it => no warning. */ | |
a8dbfd58 | 1507 | return std::string (); |
1db33378 PP |
1508 | } |
1509 | ||
5eae7aea TT |
1510 | std::string dir = objfile_name (objfile); |
1511 | terminate_after_last_dir_separator (&dir[0]); | |
1512 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1513 | |
a8dbfd58 SM |
1514 | std::string debugfile |
1515 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1516 | debuglink.get (), crc32, objfile); | |
1db33378 | 1517 | |
a8dbfd58 | 1518 | if (debugfile.empty ()) |
1db33378 | 1519 | { |
1db33378 PP |
1520 | /* For PR gdb/9538, try again with realpath (if different from the |
1521 | original). */ | |
1522 | ||
1523 | struct stat st_buf; | |
1524 | ||
4262abfb JK |
1525 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1526 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1527 | { |
5eae7aea TT |
1528 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1529 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1530 | if (symlink_dir != NULL) |
1531 | { | |
5eae7aea TT |
1532 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1533 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1534 | { |
1535 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1536 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1537 | symlink_dir.get (), | |
1538 | debuglink.get (), | |
1db33378 PP |
1539 | crc32, |
1540 | objfile); | |
1541 | } | |
1542 | } | |
1543 | } | |
1db33378 | 1544 | } |
aa28a74e | 1545 | |
25522fae | 1546 | return debugfile; |
5b5d99cf JB |
1547 | } |
1548 | ||
97cbe998 SDJ |
1549 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1550 | simultaneously. */ | |
1551 | ||
1552 | static void | |
1553 | validate_readnow_readnever (objfile_flags flags) | |
1554 | { | |
1555 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1556 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1557 | } | |
1558 | ||
c906108c SS |
1559 | /* This is the symbol-file command. Read the file, analyze its |
1560 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1561 | the command is rather bizarre: |
1562 | ||
1563 | 1. The function buildargv implements various quoting conventions | |
1564 | which are undocumented and have little or nothing in common with | |
1565 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1566 | ||
1567 | 2. Options are used, which are not generally used in GDB (perhaps | |
1568 | "set mapped on", "set readnow on" would be better) | |
1569 | ||
1570 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1571 | conventions (because it is confusing and inconvenient). */ |
1572 | ||
1573 | void | |
1d8b34a7 | 1574 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1575 | { |
c906108c SS |
1576 | dont_repeat (); |
1577 | ||
1578 | if (args == NULL) | |
1579 | { | |
1adeb98a | 1580 | symbol_file_clear (from_tty); |
c906108c SS |
1581 | } |
1582 | else | |
1583 | { | |
b15cc25c | 1584 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1585 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1586 | char *name = NULL; |
40fc416f | 1587 | bool stop_processing_options = false; |
d4d429d5 | 1588 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1589 | int idx; |
1590 | char *arg; | |
cb2f3a29 | 1591 | |
ecf45d2c SL |
1592 | if (from_tty) |
1593 | add_flags |= SYMFILE_VERBOSE; | |
1594 | ||
773a1edc | 1595 | gdb_argv built_argv (args); |
40fc416f | 1596 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1597 | { |
40fc416f | 1598 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1599 | { |
40fc416f SDJ |
1600 | if (name == NULL) |
1601 | name = arg; | |
1602 | else | |
1603 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1604 | } |
40fc416f SDJ |
1605 | else if (strcmp (arg, "-readnow") == 0) |
1606 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1607 | else if (strcmp (arg, "-readnever") == 0) |
1608 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1609 | else if (strcmp (arg, "-o") == 0) |
1610 | { | |
1611 | arg = built_argv[++idx]; | |
1612 | if (arg == NULL) | |
1613 | error (_("Missing argument to -o")); | |
1614 | ||
1615 | offset = parse_and_eval_address (arg); | |
1616 | } | |
40fc416f SDJ |
1617 | else if (strcmp (arg, "--") == 0) |
1618 | stop_processing_options = true; | |
1619 | else | |
1620 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1621 | } |
1622 | ||
1623 | if (name == NULL) | |
cb2f3a29 | 1624 | error (_("no symbol file name was specified")); |
40fc416f | 1625 | |
97cbe998 SDJ |
1626 | validate_readnow_readnever (flags); |
1627 | ||
d4d429d5 | 1628 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
c906108c SS |
1629 | } |
1630 | } | |
1631 | ||
1632 | /* Set the initial language. | |
1633 | ||
cb2f3a29 MK |
1634 | FIXME: A better solution would be to record the language in the |
1635 | psymtab when reading partial symbols, and then use it (if known) to | |
1636 | set the language. This would be a win for formats that encode the | |
1637 | language in an easily discoverable place, such as DWARF. For | |
1638 | stabs, we can jump through hoops looking for specially named | |
1639 | symbols or try to intuit the language from the specific type of | |
1640 | stabs we find, but we can't do that until later when we read in | |
1641 | full symbols. */ | |
c906108c | 1642 | |
8b60591b | 1643 | void |
fba45db2 | 1644 | set_initial_language (void) |
c906108c | 1645 | { |
9e6c82ad | 1646 | enum language lang = main_language (); |
c906108c | 1647 | |
9e6c82ad | 1648 | if (lang == language_unknown) |
01f8c46d | 1649 | { |
bf6d8a91 | 1650 | char *name = main_name (); |
d12307c1 | 1651 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1652 | |
bf6d8a91 TT |
1653 | if (sym != NULL) |
1654 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1655 | } |
cb2f3a29 | 1656 | |
ccefe4c4 TT |
1657 | if (lang == language_unknown) |
1658 | { | |
1659 | /* Make C the default language */ | |
1660 | lang = language_c; | |
c906108c | 1661 | } |
ccefe4c4 TT |
1662 | |
1663 | set_language (lang); | |
1664 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1665 | } |
1666 | ||
cb2f3a29 MK |
1667 | /* Open the file specified by NAME and hand it off to BFD for |
1668 | preliminary analysis. Return a newly initialized bfd *, which | |
1669 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1670 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1671 | |
192b62ce | 1672 | gdb_bfd_ref_ptr |
97a41605 | 1673 | symfile_bfd_open (const char *name) |
c906108c | 1674 | { |
97a41605 | 1675 | int desc = -1; |
c906108c | 1676 | |
e0cc99a6 | 1677 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1678 | if (!is_target_filename (name)) |
f1838a98 | 1679 | { |
ee0c3293 | 1680 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1681 | |
97a41605 GB |
1682 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1683 | desc = openp (getenv ("PATH"), | |
1684 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1685 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1686 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1687 | if (desc < 0) |
1688 | { | |
ee0c3293 | 1689 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1690 | |
ee0c3293 | 1691 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1692 | desc = openp (getenv ("PATH"), |
1693 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1694 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1695 | } | |
c906108c | 1696 | #endif |
97a41605 | 1697 | if (desc < 0) |
ee0c3293 | 1698 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1699 | |
e0cc99a6 | 1700 | name = absolute_name.get (); |
97a41605 | 1701 | } |
c906108c | 1702 | |
192b62ce TT |
1703 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1704 | if (sym_bfd == NULL) | |
faab9922 JK |
1705 | error (_("`%s': can't open to read symbols: %s."), name, |
1706 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1707 | |
192b62ce TT |
1708 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1709 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1710 | |
192b62ce TT |
1711 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1712 | error (_("`%s': can't read symbols: %s."), name, | |
1713 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1714 | |
1715 | return sym_bfd; | |
c906108c SS |
1716 | } |
1717 | ||
cb2f3a29 MK |
1718 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1719 | the section was not found. */ | |
1720 | ||
0e931cf0 | 1721 | int |
a121b7c1 | 1722 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1723 | { |
1724 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1725 | |
0e931cf0 JB |
1726 | if (sect) |
1727 | return sect->index; | |
1728 | else | |
1729 | return -1; | |
1730 | } | |
1731 | ||
c256e171 DE |
1732 | /* Link SF into the global symtab_fns list. |
1733 | FLAVOUR is the file format that SF handles. | |
1734 | Called on startup by the _initialize routine in each object file format | |
1735 | reader, to register information about each format the reader is prepared | |
1736 | to handle. */ | |
c906108c SS |
1737 | |
1738 | void | |
c256e171 | 1739 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1740 | { |
905014d7 | 1741 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1742 | } |
1743 | ||
cb2f3a29 MK |
1744 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1745 | either returns or calls error(). The result is an initialized | |
1746 | struct sym_fns in the objfile structure, that contains cached | |
1747 | information about the symbol file. */ | |
c906108c | 1748 | |
00b5771c | 1749 | static const struct sym_fns * |
31d99776 | 1750 | find_sym_fns (bfd *abfd) |
c906108c | 1751 | { |
31d99776 | 1752 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1753 | |
75245b24 MS |
1754 | if (our_flavour == bfd_target_srec_flavour |
1755 | || our_flavour == bfd_target_ihex_flavour | |
1756 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1757 | return NULL; /* No symbols. */ |
75245b24 | 1758 | |
905014d7 SM |
1759 | for (const registered_sym_fns &rsf : symtab_fns) |
1760 | if (our_flavour == rsf.sym_flavour) | |
1761 | return rsf.sym_fns; | |
cb2f3a29 | 1762 | |
8a3fe4f8 | 1763 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1764 | bfd_get_target (abfd)); |
c906108c SS |
1765 | } |
1766 | \f | |
cb2f3a29 | 1767 | |
c906108c SS |
1768 | /* This function runs the load command of our current target. */ |
1769 | ||
1770 | static void | |
5fed81ff | 1771 | load_command (const char *arg, int from_tty) |
c906108c | 1772 | { |
e5cc9f32 JB |
1773 | dont_repeat (); |
1774 | ||
4487aabf PA |
1775 | /* The user might be reloading because the binary has changed. Take |
1776 | this opportunity to check. */ | |
1777 | reopen_exec_file (); | |
1778 | reread_symbols (); | |
1779 | ||
b577b6af | 1780 | std::string temp; |
c906108c | 1781 | if (arg == NULL) |
1986bccd | 1782 | { |
b577b6af | 1783 | const char *parg, *prev; |
1986bccd | 1784 | |
b577b6af | 1785 | arg = get_exec_file (1); |
1986bccd | 1786 | |
b577b6af TT |
1787 | /* We may need to quote this string so buildargv can pull it |
1788 | apart. */ | |
1789 | prev = parg = arg; | |
1986bccd AS |
1790 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1791 | { | |
b577b6af TT |
1792 | temp.append (prev, parg - prev); |
1793 | prev = parg++; | |
1794 | temp.push_back ('\\'); | |
1986bccd | 1795 | } |
b577b6af TT |
1796 | /* If we have not copied anything yet, then we didn't see a |
1797 | character to quote, and we can just leave ARG unchanged. */ | |
1798 | if (!temp.empty ()) | |
1986bccd | 1799 | { |
b577b6af TT |
1800 | temp.append (prev); |
1801 | arg = temp.c_str (); | |
1986bccd AS |
1802 | } |
1803 | } | |
1804 | ||
c906108c | 1805 | target_load (arg, from_tty); |
2889e661 JB |
1806 | |
1807 | /* After re-loading the executable, we don't really know which | |
1808 | overlays are mapped any more. */ | |
1809 | overlay_cache_invalid = 1; | |
c906108c SS |
1810 | } |
1811 | ||
1812 | /* This version of "load" should be usable for any target. Currently | |
1813 | it is just used for remote targets, not inftarg.c or core files, | |
1814 | on the theory that only in that case is it useful. | |
1815 | ||
1816 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1817 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1818 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1819 | performance compares. */ | |
917317f4 | 1820 | |
917317f4 JM |
1821 | static int validate_download = 0; |
1822 | ||
e4f9b4d5 MS |
1823 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1824 | ||
1825 | static void | |
1826 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1827 | { | |
19ba03f4 | 1828 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1829 | |
2c500098 | 1830 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1831 | } |
1832 | ||
a76d924d | 1833 | /* Opaque data for load_progress. */ |
55089490 TT |
1834 | struct load_progress_data |
1835 | { | |
a76d924d | 1836 | /* Cumulative data. */ |
55089490 TT |
1837 | unsigned long write_count = 0; |
1838 | unsigned long data_count = 0; | |
1839 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1840 | }; |
1841 | ||
1842 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1843 | struct load_progress_section_data |
1844 | { | |
1845 | load_progress_section_data (load_progress_data *cumulative_, | |
1846 | const char *section_name_, ULONGEST section_size_, | |
1847 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1848 | : cumulative (cumulative_), section_name (section_name_), | |
1849 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1850 | {} | |
1851 | ||
a76d924d | 1852 | struct load_progress_data *cumulative; |
cf7a04e8 | 1853 | |
a76d924d | 1854 | /* Per-section data. */ |
cf7a04e8 | 1855 | const char *section_name; |
55089490 | 1856 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1857 | ULONGEST section_size; |
1858 | CORE_ADDR lma; | |
1859 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1860 | }; |
1861 | ||
55089490 TT |
1862 | /* Opaque data for load_section_callback. */ |
1863 | struct load_section_data | |
1864 | { | |
1865 | load_section_data (load_progress_data *progress_data_) | |
1866 | : progress_data (progress_data_) | |
1867 | {} | |
1868 | ||
1869 | ~load_section_data () | |
1870 | { | |
1871 | for (auto &&request : requests) | |
1872 | { | |
1873 | xfree (request.data); | |
1874 | delete ((load_progress_section_data *) request.baton); | |
1875 | } | |
1876 | } | |
1877 | ||
1878 | CORE_ADDR load_offset = 0; | |
1879 | struct load_progress_data *progress_data; | |
1880 | std::vector<struct memory_write_request> requests; | |
1881 | }; | |
1882 | ||
a76d924d | 1883 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1884 | |
1885 | static void | |
1886 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1887 | { | |
19ba03f4 SM |
1888 | struct load_progress_section_data *args |
1889 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1890 | struct load_progress_data *totals; |
1891 | ||
1892 | if (args == NULL) | |
1893 | /* Writing padding data. No easy way to get at the cumulative | |
1894 | stats, so just ignore this. */ | |
1895 | return; | |
1896 | ||
1897 | totals = args->cumulative; | |
1898 | ||
1899 | if (bytes == 0 && args->section_sent == 0) | |
1900 | { | |
1901 | /* The write is just starting. Let the user know we've started | |
1902 | this section. */ | |
112e8700 SM |
1903 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1904 | args->section_name, | |
1905 | hex_string (args->section_size), | |
1906 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1907 | return; |
1908 | } | |
cf7a04e8 DJ |
1909 | |
1910 | if (validate_download) | |
1911 | { | |
1912 | /* Broken memories and broken monitors manifest themselves here | |
1913 | when bring new computers to life. This doubles already slow | |
1914 | downloads. */ | |
1915 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1916 | might add a verify_memory() method to the target vector and | |
1917 | then use that. remote.c could implement that method using | |
1918 | the ``qCRC'' packet. */ | |
0efef640 | 1919 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1920 | |
0efef640 | 1921 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1922 | error (_("Download verify read failed at %s"), |
f5656ead | 1923 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1924 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1925 | error (_("Download verify compare failed at %s"), |
f5656ead | 1926 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1927 | } |
a76d924d | 1928 | totals->data_count += bytes; |
cf7a04e8 DJ |
1929 | args->lma += bytes; |
1930 | args->buffer += bytes; | |
a76d924d | 1931 | totals->write_count += 1; |
cf7a04e8 | 1932 | args->section_sent += bytes; |
522002f9 | 1933 | if (check_quit_flag () |
cf7a04e8 DJ |
1934 | || (deprecated_ui_load_progress_hook != NULL |
1935 | && deprecated_ui_load_progress_hook (args->section_name, | |
1936 | args->section_sent))) | |
1937 | error (_("Canceled the download")); | |
1938 | ||
1939 | if (deprecated_show_load_progress != NULL) | |
1940 | deprecated_show_load_progress (args->section_name, | |
1941 | args->section_sent, | |
1942 | args->section_size, | |
a76d924d DJ |
1943 | totals->data_count, |
1944 | totals->total_size); | |
cf7a04e8 DJ |
1945 | } |
1946 | ||
e4f9b4d5 MS |
1947 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1948 | ||
1949 | static void | |
1950 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1951 | { | |
19ba03f4 | 1952 | struct load_section_data *args = (struct load_section_data *) data; |
cf7a04e8 | 1953 | bfd_size_type size = bfd_get_section_size (asec); |
cf7a04e8 | 1954 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1955 | |
cf7a04e8 DJ |
1956 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1957 | return; | |
e4f9b4d5 | 1958 | |
cf7a04e8 DJ |
1959 | if (size == 0) |
1960 | return; | |
e4f9b4d5 | 1961 | |
55089490 TT |
1962 | ULONGEST begin = bfd_section_lma (abfd, asec) + args->load_offset; |
1963 | ULONGEST end = begin + size; | |
1964 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1965 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1966 | |
55089490 TT |
1967 | load_progress_section_data *section_data |
1968 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1969 | begin, buffer); | |
cf7a04e8 | 1970 | |
55089490 | 1971 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1972 | } |
1973 | ||
dcb07cfa PA |
1974 | static void print_transfer_performance (struct ui_file *stream, |
1975 | unsigned long data_count, | |
1976 | unsigned long write_count, | |
1977 | std::chrono::steady_clock::duration d); | |
1978 | ||
c906108c | 1979 | void |
9cbe5fff | 1980 | generic_load (const char *args, int from_tty) |
c906108c | 1981 | { |
a76d924d | 1982 | struct load_progress_data total_progress; |
55089490 | 1983 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 1984 | struct ui_out *uiout = current_uiout; |
a76d924d | 1985 | |
d1a41061 PP |
1986 | if (args == NULL) |
1987 | error_no_arg (_("file to load")); | |
1986bccd | 1988 | |
773a1edc | 1989 | gdb_argv argv (args); |
1986bccd | 1990 | |
ee0c3293 | 1991 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
1992 | |
1993 | if (argv[1] != NULL) | |
917317f4 | 1994 | { |
f698ca8e | 1995 | const char *endptr; |
ba5f2f8a | 1996 | |
f698ca8e | 1997 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
1998 | |
1999 | /* If the last word was not a valid number then | |
2000 | treat it as a file name with spaces in. */ | |
2001 | if (argv[1] == endptr) | |
2002 | error (_("Invalid download offset:%s."), argv[1]); | |
2003 | ||
2004 | if (argv[2] != NULL) | |
2005 | error (_("Too many parameters.")); | |
917317f4 | 2006 | } |
c906108c | 2007 | |
c378eb4e | 2008 | /* Open the file for loading. */ |
ee0c3293 | 2009 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2010 | if (loadfile_bfd == NULL) |
ee0c3293 | 2011 | perror_with_name (filename.get ()); |
917317f4 | 2012 | |
192b62ce | 2013 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2014 | { |
ee0c3293 | 2015 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2016 | bfd_errmsg (bfd_get_error ())); |
2017 | } | |
c5aa993b | 2018 | |
192b62ce | 2019 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2020 | (void *) &total_progress.total_size); |
2021 | ||
192b62ce | 2022 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2023 | |
dcb07cfa PA |
2024 | using namespace std::chrono; |
2025 | ||
2026 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2027 | |
a76d924d DJ |
2028 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2029 | load_progress) != 0) | |
2030 | error (_("Load failed")); | |
c906108c | 2031 | |
dcb07cfa | 2032 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2033 | |
55089490 | 2034 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2035 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2036 | uiout->text ("Start address "); |
2037 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2038 | uiout->text (", load size "); | |
2039 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2040 | uiout->text ("\n"); | |
fb14de7b | 2041 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2042 | |
38963c97 DJ |
2043 | /* Reset breakpoints, now that we have changed the load image. For |
2044 | instance, breakpoints may have been set (or reset, by | |
2045 | post_create_inferior) while connected to the target but before we | |
2046 | loaded the program. In that case, the prologue analyzer could | |
2047 | have read instructions from the target to find the right | |
2048 | breakpoint locations. Loading has changed the contents of that | |
2049 | memory. */ | |
2050 | ||
2051 | breakpoint_re_set (); | |
2052 | ||
a76d924d DJ |
2053 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2054 | total_progress.write_count, | |
dcb07cfa | 2055 | end_time - start_time); |
c906108c SS |
2056 | } |
2057 | ||
dcb07cfa PA |
2058 | /* Report on STREAM the performance of a memory transfer operation, |
2059 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2060 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2061 | that information is not available. TIME is how long the operation | |
2062 | lasted. */ | |
c906108c | 2063 | |
dcb07cfa | 2064 | static void |
d9fcf2fb | 2065 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2066 | unsigned long data_count, |
2067 | unsigned long write_count, | |
dcb07cfa | 2068 | std::chrono::steady_clock::duration time) |
917317f4 | 2069 | { |
dcb07cfa | 2070 | using namespace std::chrono; |
79a45e25 | 2071 | struct ui_out *uiout = current_uiout; |
2b71414d | 2072 | |
dcb07cfa | 2073 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2074 | |
112e8700 | 2075 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2076 | if (ms.count () > 0) |
8b93c638 | 2077 | { |
dcb07cfa | 2078 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2079 | |
112e8700 | 2080 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2081 | { |
112e8700 SM |
2082 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2083 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2084 | } |
2085 | else if (rate < 1024) | |
2086 | { | |
112e8700 SM |
2087 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2088 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2089 | } |
2090 | else | |
2091 | { | |
112e8700 SM |
2092 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2093 | uiout->text (" KB/sec"); | |
9f43d28c | 2094 | } |
8b93c638 JM |
2095 | } |
2096 | else | |
2097 | { | |
112e8700 SM |
2098 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2099 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2100 | } |
2101 | if (write_count > 0) | |
2102 | { | |
112e8700 SM |
2103 | uiout->text (", "); |
2104 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2105 | uiout->text (" bytes/write"); | |
8b93c638 | 2106 | } |
112e8700 | 2107 | uiout->text (".\n"); |
c906108c SS |
2108 | } |
2109 | ||
291f9a96 PT |
2110 | /* Add an OFFSET to the start address of each section in OBJF, except |
2111 | sections that were specified in ADDRS. */ | |
2112 | ||
2113 | static void | |
2114 | set_objfile_default_section_offset (struct objfile *objf, | |
2115 | const section_addr_info &addrs, | |
2116 | CORE_ADDR offset) | |
2117 | { | |
2118 | /* Add OFFSET to all sections by default. */ | |
2119 | std::vector<struct section_offsets> offsets (objf->num_sections, | |
027a4c30 | 2120 | { { offset } }); |
291f9a96 PT |
2121 | |
2122 | /* Create sorted lists of all sections in ADDRS as well as all | |
2123 | sections in OBJF. */ | |
2124 | ||
2125 | std::vector<const struct other_sections *> addrs_sorted | |
2126 | = addrs_section_sort (addrs); | |
2127 | ||
2128 | section_addr_info objf_addrs | |
2129 | = build_section_addr_info_from_objfile (objf); | |
2130 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2131 | = addrs_section_sort (objf_addrs); | |
2132 | ||
2133 | /* Walk the BFD section list, and if a matching section is found in | |
2134 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2135 | unchanged. | |
2136 | ||
2137 | Note that both lists may contain multiple sections with the same | |
2138 | name, and then the sections from ADDRS are matched in BFD order | |
2139 | (thanks to sectindex). */ | |
2140 | ||
2141 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2142 | = addrs_sorted.begin (); | |
ff27d073 | 2143 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2144 | { |
2145 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2146 | int cmp = -1; | |
2147 | ||
2148 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2149 | { | |
2150 | const struct other_sections *sect = *addrs_sorted_iter; | |
2151 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2152 | cmp = strcmp (sect_name, objf_name); | |
2153 | if (cmp <= 0) | |
2154 | ++addrs_sorted_iter; | |
2155 | } | |
2156 | ||
2157 | if (cmp == 0) | |
2158 | offsets[objf_sect->sectindex].offsets[0] = 0; | |
2159 | } | |
2160 | ||
2161 | /* Apply the new section offsets. */ | |
2162 | objfile_relocate (objf, offsets.data ()); | |
2163 | } | |
2164 | ||
c906108c SS |
2165 | /* This function allows the addition of incrementally linked object files. |
2166 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2167 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2168 | special case syntax for the rombug target (Rombug is the boot | |
2169 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2170 | rombug case, the user doesn't need to supply a text address, | |
2171 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2172 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2173 | |
c906108c | 2174 | static void |
2cf311eb | 2175 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2176 | { |
5af949e3 | 2177 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2178 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2179 | char *arg; |
2acceee2 | 2180 | int argcnt = 0; |
76ad5e1e | 2181 | struct objfile *objf; |
b15cc25c PA |
2182 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2183 | symfile_add_flags add_flags = 0; | |
2184 | ||
2185 | if (from_tty) | |
2186 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2187 | |
a39a16c4 | 2188 | struct sect_opt |
2acceee2 | 2189 | { |
a121b7c1 PA |
2190 | const char *name; |
2191 | const char *value; | |
a39a16c4 | 2192 | }; |
db162d44 | 2193 | |
40fc416f SDJ |
2194 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2195 | bool stop_processing_options = false; | |
291f9a96 | 2196 | CORE_ADDR offset = 0; |
c5aa993b | 2197 | |
c906108c SS |
2198 | dont_repeat (); |
2199 | ||
2200 | if (args == NULL) | |
8a3fe4f8 | 2201 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2202 | |
40fc416f | 2203 | bool seen_addr = false; |
291f9a96 | 2204 | bool seen_offset = false; |
773a1edc | 2205 | gdb_argv argv (args); |
db162d44 | 2206 | |
5b96932b AS |
2207 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2208 | { | |
40fc416f | 2209 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2210 | { |
40fc416f | 2211 | if (filename == NULL) |
41dc8db8 | 2212 | { |
40fc416f SDJ |
2213 | /* First non-option argument is always the filename. */ |
2214 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2215 | } |
40fc416f | 2216 | else if (!seen_addr) |
41dc8db8 | 2217 | { |
40fc416f SDJ |
2218 | /* The second non-option argument is always the text |
2219 | address at which to load the program. */ | |
2220 | sect_opts[0].value = arg; | |
2221 | seen_addr = true; | |
41dc8db8 MB |
2222 | } |
2223 | else | |
02ca603a | 2224 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2225 | } |
40fc416f SDJ |
2226 | else if (strcmp (arg, "-readnow") == 0) |
2227 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2228 | else if (strcmp (arg, "-readnever") == 0) |
2229 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2230 | else if (strcmp (arg, "-s") == 0) |
2231 | { | |
2232 | if (argv[argcnt + 1] == NULL) | |
2233 | error (_("Missing section name after \"-s\"")); | |
2234 | else if (argv[argcnt + 2] == NULL) | |
2235 | error (_("Missing section address after \"-s\"")); | |
2236 | ||
2237 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2238 | ||
2239 | sect_opts.push_back (sect); | |
2240 | argcnt += 2; | |
2241 | } | |
291f9a96 PT |
2242 | else if (strcmp (arg, "-o") == 0) |
2243 | { | |
2244 | arg = argv[++argcnt]; | |
2245 | if (arg == NULL) | |
2246 | error (_("Missing argument to -o")); | |
2247 | ||
2248 | offset = parse_and_eval_address (arg); | |
2249 | seen_offset = true; | |
2250 | } | |
40fc416f SDJ |
2251 | else if (strcmp (arg, "--") == 0) |
2252 | stop_processing_options = true; | |
2253 | else | |
2254 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2255 | } |
c906108c | 2256 | |
40fc416f SDJ |
2257 | if (filename == NULL) |
2258 | error (_("You must provide a filename to be loaded.")); | |
2259 | ||
97cbe998 SDJ |
2260 | validate_readnow_readnever (flags); |
2261 | ||
c378eb4e | 2262 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2263 | a sect_addr_info structure to be passed around to other |
2264 | functions. We have to split this up into separate print | |
bb599908 | 2265 | statements because hex_string returns a local static |
c378eb4e | 2266 | string. */ |
5417f6dc | 2267 | |
ed6dfe51 | 2268 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2269 | filename.get ()); |
37e136b1 | 2270 | section_addr_info section_addrs; |
ed6dfe51 PT |
2271 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2272 | if (!seen_addr) | |
2273 | ++it; | |
2274 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2275 | { |
db162d44 | 2276 | CORE_ADDR addr; |
ed6dfe51 PT |
2277 | const char *val = it->value; |
2278 | const char *sec = it->name; | |
5417f6dc | 2279 | |
ed6dfe51 PT |
2280 | if (section_addrs.empty ()) |
2281 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2282 | addr = parse_and_eval_address (val); |
db162d44 | 2283 | |
db162d44 | 2284 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2285 | entered on the command line. Every array element is |
2286 | assigned an ascending section index to preserve the above | |
2287 | order over an unstable sorting algorithm. This dummy | |
2288 | index is not used for any other purpose. | |
2289 | */ | |
2290 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2291 | printf_filtered ("\t%s_addr = %s\n", sec, |
2292 | paddress (gdbarch, addr)); | |
db162d44 | 2293 | |
5417f6dc | 2294 | /* The object's sections are initialized when a |
db162d44 | 2295 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2296 | This happens in reread_symbols. |
db162d44 EZ |
2297 | At this point, we don't know what file type this is, |
2298 | so we can't determine what section names are valid. */ | |
2acceee2 | 2299 | } |
291f9a96 PT |
2300 | if (seen_offset) |
2301 | printf_unfiltered (_("%s offset by %s\n"), | |
2302 | (section_addrs.empty () | |
2303 | ? _(" with all sections") | |
2304 | : _("with other sections")), | |
2305 | paddress (gdbarch, offset)); | |
2306 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2307 | printf_unfiltered ("\n"); |
db162d44 | 2308 | |
2acceee2 | 2309 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2310 | error (_("Not confirmed.")); |
c906108c | 2311 | |
37e136b1 TT |
2312 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2313 | flags); | |
76ad5e1e | 2314 | |
291f9a96 PT |
2315 | if (seen_offset) |
2316 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2317 | ||
76ad5e1e | 2318 | add_target_sections_of_objfile (objf); |
c906108c SS |
2319 | |
2320 | /* Getting new symbols may change our opinion about what is | |
2321 | frameless. */ | |
2322 | reinit_frame_cache (); | |
2323 | } | |
2324 | \f | |
70992597 | 2325 | |
63644780 NB |
2326 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2327 | ||
2328 | static void | |
2cf311eb | 2329 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2330 | { |
63644780 | 2331 | struct objfile *objf = NULL; |
63644780 | 2332 | struct program_space *pspace = current_program_space; |
63644780 NB |
2333 | |
2334 | dont_repeat (); | |
2335 | ||
2336 | if (args == NULL) | |
2337 | error (_("remove-symbol-file: no symbol file provided")); | |
2338 | ||
773a1edc | 2339 | gdb_argv argv (args); |
63644780 NB |
2340 | |
2341 | if (strcmp (argv[0], "-a") == 0) | |
2342 | { | |
2343 | /* Interpret the next argument as an address. */ | |
2344 | CORE_ADDR addr; | |
2345 | ||
2346 | if (argv[1] == NULL) | |
2347 | error (_("Missing address argument")); | |
2348 | ||
2349 | if (argv[2] != NULL) | |
2350 | error (_("Junk after %s"), argv[1]); | |
2351 | ||
2352 | addr = parse_and_eval_address (argv[1]); | |
2353 | ||
aed57c53 | 2354 | for (objfile *objfile : all_objfiles (current_program_space)) |
63644780 | 2355 | { |
aed57c53 TT |
2356 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2357 | && (objfile->flags & OBJF_SHARED) != 0 | |
2358 | && objfile->pspace == pspace | |
2359 | && is_addr_in_objfile (addr, objfile)) | |
2360 | { | |
2361 | objf = objfile; | |
2362 | break; | |
2363 | } | |
63644780 NB |
2364 | } |
2365 | } | |
2366 | else if (argv[0] != NULL) | |
2367 | { | |
2368 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2369 | |
2370 | if (argv[1] != NULL) | |
2371 | error (_("Junk after %s"), argv[0]); | |
2372 | ||
ee0c3293 | 2373 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 | 2374 | |
aed57c53 | 2375 | for (objfile *objfile : all_objfiles (current_program_space)) |
63644780 | 2376 | { |
aed57c53 TT |
2377 | if ((objfile->flags & OBJF_USERLOADED) != 0 |
2378 | && (objfile->flags & OBJF_SHARED) != 0 | |
2379 | && objfile->pspace == pspace | |
2380 | && filename_cmp (filename.get (), objfile_name (objfile)) == 0) | |
2381 | { | |
2382 | objf = objfile; | |
2383 | break; | |
2384 | } | |
63644780 NB |
2385 | } |
2386 | } | |
2387 | ||
2388 | if (objf == NULL) | |
2389 | error (_("No symbol file found")); | |
2390 | ||
2391 | if (from_tty | |
2392 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2393 | objfile_name (objf))) | |
2394 | error (_("Not confirmed.")); | |
2395 | ||
9e86da07 | 2396 | delete objf; |
63644780 | 2397 | clear_symtab_users (0); |
63644780 NB |
2398 | } |
2399 | ||
c906108c | 2400 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2401 | |
c906108c | 2402 | void |
fba45db2 | 2403 | reread_symbols (void) |
c906108c SS |
2404 | { |
2405 | struct objfile *objfile; | |
2406 | long new_modtime; | |
c906108c SS |
2407 | struct stat new_statbuf; |
2408 | int res; | |
4c404b8b | 2409 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2410 | |
2411 | /* With the addition of shared libraries, this should be modified, | |
2412 | the load time should be saved in the partial symbol tables, since | |
2413 | different tables may come from different source files. FIXME. | |
2414 | This routine should then walk down each partial symbol table | |
c378eb4e | 2415 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2416 | |
c5aa993b JM |
2417 | for (objfile = object_files; objfile; objfile = objfile->next) |
2418 | { | |
9cce227f TG |
2419 | if (objfile->obfd == NULL) |
2420 | continue; | |
2421 | ||
2422 | /* Separate debug objfiles are handled in the main objfile. */ | |
2423 | if (objfile->separate_debug_objfile_backlink) | |
2424 | continue; | |
2425 | ||
02aeec7b JB |
2426 | /* If this object is from an archive (what you usually create with |
2427 | `ar', often called a `static library' on most systems, though | |
2428 | a `shared library' on AIX is also an archive), then you should | |
2429 | stat on the archive name, not member name. */ | |
9cce227f TG |
2430 | if (objfile->obfd->my_archive) |
2431 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2432 | else | |
4262abfb | 2433 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2434 | if (res != 0) |
2435 | { | |
c378eb4e | 2436 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2437 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2438 | objfile_name (objfile)); | |
9cce227f TG |
2439 | continue; |
2440 | } | |
2441 | new_modtime = new_statbuf.st_mtime; | |
2442 | if (new_modtime != objfile->mtime) | |
2443 | { | |
2444 | struct cleanup *old_cleanups; | |
2445 | struct section_offsets *offsets; | |
2446 | int num_offsets; | |
9cce227f | 2447 | |
22068491 TT |
2448 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2449 | objfile_name (objfile)); | |
9cce227f TG |
2450 | |
2451 | /* There are various functions like symbol_file_add, | |
2452 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2453 | appear to do what we want. But they have various other | |
2454 | effects which we *don't* want. So we just do stuff | |
2455 | ourselves. We don't worry about mapped files (for one thing, | |
2456 | any mapped file will be out of date). */ | |
2457 | ||
2458 | /* If we get an error, blow away this objfile (not sure if | |
2459 | that is the correct response for things like shared | |
2460 | libraries). */ | |
ed2b3126 TT |
2461 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2462 | ||
9cce227f | 2463 | /* We need to do this whenever any symbols go away. */ |
ed2b3126 | 2464 | old_cleanups = make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
9cce227f | 2465 | |
0ba1096a KT |
2466 | if (exec_bfd != NULL |
2467 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2468 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2469 | { |
2470 | /* Reload EXEC_BFD without asking anything. */ | |
2471 | ||
2472 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2473 | } | |
2474 | ||
f6eeced0 JK |
2475 | /* Keep the calls order approx. the same as in free_objfile. */ |
2476 | ||
2477 | /* Free the separate debug objfiles. It will be | |
2478 | automatically recreated by sym_read. */ | |
2479 | free_objfile_separate_debug (objfile); | |
2480 | ||
2481 | /* Remove any references to this objfile in the global | |
2482 | value lists. */ | |
2483 | preserve_values (objfile); | |
2484 | ||
2485 | /* Nuke all the state that we will re-read. Much of the following | |
2486 | code which sets things to NULL really is necessary to tell | |
2487 | other parts of GDB that there is nothing currently there. | |
2488 | ||
2489 | Try to keep the freeing order compatible with free_objfile. */ | |
2490 | ||
2491 | if (objfile->sf != NULL) | |
2492 | { | |
2493 | (*objfile->sf->sym_finish) (objfile); | |
2494 | } | |
2495 | ||
2496 | clear_objfile_data (objfile); | |
2497 | ||
e1507e95 | 2498 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2499 | { |
192b62ce | 2500 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2501 | char *obfd_filename; |
a4453b7e TT |
2502 | |
2503 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2504 | /* Open the new BFD before freeing the old one, so that | |
2505 | the filename remains live. */ | |
192b62ce TT |
2506 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2507 | objfile->obfd = temp.release (); | |
e1507e95 | 2508 | if (objfile->obfd == NULL) |
192b62ce | 2509 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2510 | } |
2511 | ||
c0c9f665 | 2512 | std::string original_name = objfile->original_name; |
24ba069a | 2513 | |
9cce227f TG |
2514 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2515 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2516 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2517 | bfd_errmsg (bfd_get_error ())); |
2518 | ||
2519 | /* Save the offsets, we will nuke them with the rest of the | |
2520 | objfile_obstack. */ | |
2521 | num_offsets = objfile->num_sections; | |
2522 | offsets = ((struct section_offsets *) | |
2523 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2524 | memcpy (offsets, objfile->section_offsets, | |
2525 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2526 | ||
6d6a12bf | 2527 | objfile->reset_psymtabs (); |
41664b45 DG |
2528 | |
2529 | /* NB: after this call to obstack_free, objfiles_changed | |
2530 | will need to be called (see discussion below). */ | |
9cce227f TG |
2531 | obstack_free (&objfile->objfile_obstack, 0); |
2532 | objfile->sections = NULL; | |
43f3e411 | 2533 | objfile->compunit_symtabs = NULL; |
34eaf542 | 2534 | objfile->template_symbols = NULL; |
22ad8107 | 2535 | objfile->static_links = NULL; |
9cce227f | 2536 | |
9cce227f TG |
2537 | /* obstack_init also initializes the obstack so it is |
2538 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2539 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2540 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2541 | |
846060df JB |
2542 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2543 | data on the objfile's obstack (if sharing data across | |
2544 | multiple users is not possible), so it's important to | |
2545 | do it *after* the obstack has been initialized. */ | |
2546 | set_objfile_per_bfd (objfile); | |
2547 | ||
224c3ddb | 2548 | objfile->original_name |
c0c9f665 TT |
2549 | = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2550 | original_name.c_str (), | |
2551 | original_name.size ()); | |
24ba069a | 2552 | |
779bd270 DE |
2553 | /* Reset the sym_fns pointer. The ELF reader can change it |
2554 | based on whether .gdb_index is present, and we need it to | |
2555 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2556 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2557 | |
d82ea6a8 | 2558 | build_objfile_section_table (objfile); |
9cce227f TG |
2559 | terminate_minimal_symbol_table (objfile); |
2560 | ||
2561 | /* We use the same section offsets as from last time. I'm not | |
2562 | sure whether that is always correct for shared libraries. */ | |
2563 | objfile->section_offsets = (struct section_offsets *) | |
2564 | obstack_alloc (&objfile->objfile_obstack, | |
2565 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2566 | memcpy (objfile->section_offsets, offsets, | |
2567 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2568 | objfile->num_sections = num_offsets; | |
2569 | ||
2570 | /* What the hell is sym_new_init for, anyway? The concept of | |
2571 | distinguishing between the main file and additional files | |
2572 | in this way seems rather dubious. */ | |
2573 | if (objfile == symfile_objfile) | |
c906108c | 2574 | { |
9cce227f | 2575 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2576 | } |
9cce227f TG |
2577 | |
2578 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2579 | clear_complaints (); |
608e2dbb TT |
2580 | |
2581 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2582 | |
2583 | /* We are about to read new symbols and potentially also | |
2584 | DWARF information. Some targets may want to pass addresses | |
2585 | read from DWARF DIE's through an adjustment function before | |
2586 | saving them, like MIPS, which may call into | |
2587 | "find_pc_section". When called, that function will make | |
2588 | use of per-objfile program space data. | |
2589 | ||
2590 | Since we discarded our section information above, we have | |
2591 | dangling pointers in the per-objfile program space data | |
2592 | structure. Force GDB to update the section mapping | |
2593 | information by letting it know the objfile has changed, | |
2594 | making the dangling pointers point to correct data | |
2595 | again. */ | |
2596 | ||
2597 | objfiles_changed (); | |
2598 | ||
608e2dbb | 2599 | read_symbols (objfile, 0); |
b11896a5 | 2600 | |
9cce227f | 2601 | if (!objfile_has_symbols (objfile)) |
c906108c | 2602 | { |
9cce227f | 2603 | wrap_here (""); |
22068491 | 2604 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2605 | wrap_here (""); |
c5aa993b | 2606 | } |
9cce227f TG |
2607 | |
2608 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2609 | clear_complaints (); |
9cce227f TG |
2610 | |
2611 | /* Getting new symbols may change our opinion about what is | |
2612 | frameless. */ | |
2613 | ||
2614 | reinit_frame_cache (); | |
2615 | ||
2616 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2617 | objfile_holder.release (); |
9cce227f TG |
2618 | discard_cleanups (old_cleanups); |
2619 | ||
2620 | /* If the mtime has changed between the time we set new_modtime | |
2621 | and now, we *want* this to be out of date, so don't call stat | |
2622 | again now. */ | |
2623 | objfile->mtime = new_modtime; | |
9cce227f | 2624 | init_entry_point_info (objfile); |
4ac39b97 | 2625 | |
4c404b8b | 2626 | new_objfiles.push_back (objfile); |
c906108c SS |
2627 | } |
2628 | } | |
c906108c | 2629 | |
4c404b8b | 2630 | if (!new_objfiles.empty ()) |
ea53e89f | 2631 | { |
c1e56572 | 2632 | clear_symtab_users (0); |
4ac39b97 JK |
2633 | |
2634 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2635 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2636 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2637 | for (auto iter : new_objfiles) |
c486b610 | 2638 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2639 | |
ea53e89f JB |
2640 | /* At least one objfile has changed, so we can consider that |
2641 | the executable we're debugging has changed too. */ | |
76727919 | 2642 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2643 | } |
c906108c | 2644 | } |
c906108c SS |
2645 | \f |
2646 | ||
593e3209 | 2647 | struct filename_language |
c5aa993b | 2648 | { |
593e3209 SM |
2649 | filename_language (const std::string &ext_, enum language lang_) |
2650 | : ext (ext_), lang (lang_) | |
2651 | {} | |
3fcf0b0d | 2652 | |
593e3209 SM |
2653 | std::string ext; |
2654 | enum language lang; | |
2655 | }; | |
c906108c | 2656 | |
593e3209 | 2657 | static std::vector<filename_language> filename_language_table; |
c906108c | 2658 | |
56618e20 TT |
2659 | /* See symfile.h. */ |
2660 | ||
2661 | void | |
2662 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2663 | { |
593e3209 | 2664 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2665 | } |
2666 | ||
2667 | static char *ext_args; | |
920d2a44 AC |
2668 | static void |
2669 | show_ext_args (struct ui_file *file, int from_tty, | |
2670 | struct cmd_list_element *c, const char *value) | |
2671 | { | |
3e43a32a MS |
2672 | fprintf_filtered (file, |
2673 | _("Mapping between filename extension " | |
2674 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2675 | value); |
2676 | } | |
c906108c SS |
2677 | |
2678 | static void | |
eb4c3f4a TT |
2679 | set_ext_lang_command (const char *args, |
2680 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2681 | { |
c906108c SS |
2682 | char *cp = ext_args; |
2683 | enum language lang; | |
2684 | ||
c378eb4e | 2685 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2686 | if (*cp != '.') |
8a3fe4f8 | 2687 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2688 | |
2689 | /* Find end of first arg. */ | |
c5aa993b | 2690 | while (*cp && !isspace (*cp)) |
c906108c SS |
2691 | cp++; |
2692 | ||
2693 | if (*cp == '\0') | |
3e43a32a MS |
2694 | error (_("'%s': two arguments required -- " |
2695 | "filename extension and language"), | |
c906108c SS |
2696 | ext_args); |
2697 | ||
c378eb4e | 2698 | /* Null-terminate first arg. */ |
c5aa993b | 2699 | *cp++ = '\0'; |
c906108c SS |
2700 | |
2701 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2702 | cp = skip_spaces (cp); |
c906108c SS |
2703 | |
2704 | if (*cp == '\0') | |
3e43a32a MS |
2705 | error (_("'%s': two arguments required -- " |
2706 | "filename extension and language"), | |
c906108c SS |
2707 | ext_args); |
2708 | ||
2709 | /* Lookup the language from among those we know. */ | |
2710 | lang = language_enum (cp); | |
2711 | ||
593e3209 | 2712 | auto it = filename_language_table.begin (); |
c906108c | 2713 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2714 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2715 | { |
593e3209 | 2716 | if (it->ext == ext_args) |
3fcf0b0d TT |
2717 | break; |
2718 | } | |
c906108c | 2719 | |
593e3209 | 2720 | if (it == filename_language_table.end ()) |
c906108c | 2721 | { |
c378eb4e | 2722 | /* New file extension. */ |
c906108c SS |
2723 | add_filename_language (ext_args, lang); |
2724 | } | |
2725 | else | |
2726 | { | |
c378eb4e | 2727 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2728 | |
2729 | /* if (from_tty) */ | |
2730 | /* query ("Really make files of type %s '%s'?", */ | |
2731 | /* ext_args, language_str (lang)); */ | |
2732 | ||
593e3209 | 2733 | it->lang = lang; |
c906108c SS |
2734 | } |
2735 | } | |
2736 | ||
2737 | static void | |
1d12d88f | 2738 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2739 | { |
a3f17187 | 2740 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2741 | printf_filtered ("\n\n"); |
593e3209 SM |
2742 | for (const filename_language &entry : filename_language_table) |
2743 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2744 | language_str (entry.lang)); | |
c906108c SS |
2745 | } |
2746 | ||
c906108c | 2747 | enum language |
dd786858 | 2748 | deduce_language_from_filename (const char *filename) |
c906108c | 2749 | { |
e6a959d6 | 2750 | const char *cp; |
c906108c SS |
2751 | |
2752 | if (filename != NULL) | |
2753 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2754 | { |
593e3209 SM |
2755 | for (const filename_language &entry : filename_language_table) |
2756 | if (entry.ext == cp) | |
2757 | return entry.lang; | |
3fcf0b0d | 2758 | } |
c906108c SS |
2759 | |
2760 | return language_unknown; | |
2761 | } | |
2762 | \f | |
43f3e411 DE |
2763 | /* Allocate and initialize a new symbol table. |
2764 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2765 | |
2766 | struct symtab * | |
43f3e411 | 2767 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2768 | { |
43f3e411 DE |
2769 | struct objfile *objfile = cust->objfile; |
2770 | struct symtab *symtab | |
2771 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2772 | |
19ba03f4 SM |
2773 | symtab->filename |
2774 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2775 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2776 | symtab->fullname = NULL; |
2777 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2778 | |
db0fec5c DE |
2779 | /* This can be very verbose with lots of headers. |
2780 | Only print at higher debug levels. */ | |
2781 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2782 | { |
2783 | /* Be a bit clever with debugging messages, and don't print objfile | |
2784 | every time, only when it changes. */ | |
2785 | static char *last_objfile_name = NULL; | |
2786 | ||
2787 | if (last_objfile_name == NULL | |
4262abfb | 2788 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2789 | { |
2790 | xfree (last_objfile_name); | |
4262abfb | 2791 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2792 | fprintf_filtered (gdb_stdlog, |
2793 | "Creating one or more symtabs for objfile %s ...\n", | |
2794 | last_objfile_name); | |
45cfd468 | 2795 | } |
22068491 TT |
2796 | fprintf_filtered (gdb_stdlog, |
2797 | "Created symtab %s for module %s.\n", | |
2798 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2799 | } |
2800 | ||
43f3e411 DE |
2801 | /* Add it to CUST's list of symtabs. */ |
2802 | if (cust->filetabs == NULL) | |
2803 | { | |
2804 | cust->filetabs = symtab; | |
2805 | cust->last_filetab = symtab; | |
2806 | } | |
2807 | else | |
2808 | { | |
2809 | cust->last_filetab->next = symtab; | |
2810 | cust->last_filetab = symtab; | |
2811 | } | |
2812 | ||
2813 | /* Backlink to the containing compunit symtab. */ | |
2814 | symtab->compunit_symtab = cust; | |
2815 | ||
2816 | return symtab; | |
2817 | } | |
2818 | ||
2819 | /* Allocate and initialize a new compunit. | |
2820 | NAME is the name of the main source file, if there is one, or some | |
2821 | descriptive text if there are no source files. */ | |
2822 | ||
2823 | struct compunit_symtab * | |
2824 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2825 | { | |
2826 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2827 | struct compunit_symtab); | |
2828 | const char *saved_name; | |
2829 | ||
2830 | cu->objfile = objfile; | |
2831 | ||
2832 | /* The name we record here is only for display/debugging purposes. | |
2833 | Just save the basename to avoid path issues (too long for display, | |
2834 | relative vs absolute, etc.). */ | |
2835 | saved_name = lbasename (name); | |
224c3ddb SM |
2836 | cu->name |
2837 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2838 | strlen (saved_name)); | |
43f3e411 DE |
2839 | |
2840 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2841 | ||
2842 | if (symtab_create_debug) | |
2843 | { | |
22068491 TT |
2844 | fprintf_filtered (gdb_stdlog, |
2845 | "Created compunit symtab %s for %s.\n", | |
2846 | host_address_to_string (cu), | |
2847 | cu->name); | |
43f3e411 DE |
2848 | } |
2849 | ||
2850 | return cu; | |
2851 | } | |
2852 | ||
2853 | /* Hook CU to the objfile it comes from. */ | |
2854 | ||
2855 | void | |
2856 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2857 | { | |
2858 | cu->next = cu->objfile->compunit_symtabs; | |
2859 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2860 | } |
c906108c | 2861 | \f |
c5aa993b | 2862 | |
b15cc25c PA |
2863 | /* Reset all data structures in gdb which may contain references to |
2864 | symbol table data. */ | |
c906108c SS |
2865 | |
2866 | void | |
b15cc25c | 2867 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2868 | { |
2869 | /* Someday, we should do better than this, by only blowing away | |
2870 | the things that really need to be blown. */ | |
c0501be5 DJ |
2871 | |
2872 | /* Clear the "current" symtab first, because it is no longer valid. | |
2873 | breakpoint_re_set may try to access the current symtab. */ | |
2874 | clear_current_source_symtab_and_line (); | |
2875 | ||
c906108c | 2876 | clear_displays (); |
1bfeeb0f | 2877 | clear_last_displayed_sal (); |
c906108c | 2878 | clear_pc_function_cache (); |
76727919 | 2879 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 DJ |
2880 | |
2881 | /* Clear globals which might have pointed into a removed objfile. | |
2882 | FIXME: It's not clear which of these are supposed to persist | |
2883 | between expressions and which ought to be reset each time. */ | |
2884 | expression_context_block = NULL; | |
aee1fcdf | 2885 | innermost_block.reset (); |
8756216b DP |
2886 | |
2887 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2888 | varobj_invalidate (); | |
2889 | ||
e700d1b2 JB |
2890 | /* Now that the various caches have been cleared, we can re_set |
2891 | our breakpoints without risking it using stale data. */ | |
2892 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2893 | breakpoint_re_set (); | |
c906108c SS |
2894 | } |
2895 | ||
74b7792f AC |
2896 | static void |
2897 | clear_symtab_users_cleanup (void *ignore) | |
2898 | { | |
c1e56572 | 2899 | clear_symtab_users (0); |
74b7792f | 2900 | } |
c906108c | 2901 | \f |
c906108c SS |
2902 | /* OVERLAYS: |
2903 | The following code implements an abstraction for debugging overlay sections. | |
2904 | ||
2905 | The target model is as follows: | |
2906 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2907 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2908 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2909 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2910 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2911 | sections should be considered to be mapped from the VMA to the LMA. |
2912 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2913 | For instance, if a section has been mapped then its contents |
c5aa993b | 2914 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2915 | |
2916 | Two levels of debugger support for overlays are available. One is | |
2917 | "manual", in which the debugger relies on the user to tell it which | |
2918 | overlays are currently mapped. This level of support is | |
2919 | implemented entirely in the core debugger, and the information about | |
2920 | whether a section is mapped is kept in the objfile->obj_section table. | |
2921 | ||
2922 | The second level of support is "automatic", and is only available if | |
2923 | the target-specific code provides functionality to read the target's | |
2924 | overlay mapping table, and translate its contents for the debugger | |
2925 | (by updating the mapped state information in the obj_section tables). | |
2926 | ||
2927 | The interface is as follows: | |
c5aa993b JM |
2928 | User commands: |
2929 | overlay map <name> -- tell gdb to consider this section mapped | |
2930 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2931 | overlay list -- list the sections that GDB thinks are mapped | |
2932 | overlay read-target -- get the target's state of what's mapped | |
2933 | overlay off/manual/auto -- set overlay debugging state | |
2934 | Functional interface: | |
2935 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2936 | section, return that section. | |
5417f6dc | 2937 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2938 | the pc, either in its VMA or its LMA |
714835d5 | 2939 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2940 | section_is_overlay(sect): true if section's VMA != LMA |
2941 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2942 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2943 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2944 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2945 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2946 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2947 | either in VMA or LMA depending on whether | |
c378eb4e | 2948 | the symbol's section is currently mapped. */ |
c906108c SS |
2949 | |
2950 | /* Overlay debugging state: */ | |
2951 | ||
d874f1e2 | 2952 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2953 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2954 | |
c906108c | 2955 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2956 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2957 | SECTION is loaded at an address different from where it will "run". */ |
2958 | ||
2959 | int | |
714835d5 | 2960 | section_is_overlay (struct obj_section *section) |
c906108c | 2961 | { |
714835d5 UW |
2962 | if (overlay_debugging && section) |
2963 | { | |
714835d5 | 2964 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2965 | |
714835d5 UW |
2966 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2967 | && bfd_section_lma (abfd, bfd_section) | |
2968 | != bfd_section_vma (abfd, bfd_section)) | |
2969 | return 1; | |
2970 | } | |
c906108c SS |
2971 | |
2972 | return 0; | |
2973 | } | |
2974 | ||
2975 | /* Function: overlay_invalidate_all (void) | |
2976 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2977 | ||
2978 | static void | |
fba45db2 | 2979 | overlay_invalidate_all (void) |
c906108c | 2980 | { |
c906108c SS |
2981 | struct obj_section *sect; |
2982 | ||
3b9d3ac2 TT |
2983 | for (objfile *objfile : all_objfiles (current_program_space)) |
2984 | ALL_OBJFILE_OSECTIONS (objfile, sect) | |
2985 | if (section_is_overlay (sect)) | |
2986 | sect->ovly_mapped = -1; | |
c906108c SS |
2987 | } |
2988 | ||
714835d5 | 2989 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2990 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2991 | |
2992 | Access to the ovly_mapped flag is restricted to this function, so | |
2993 | that we can do automatic update. If the global flag | |
2994 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2995 | overlay_invalidate_all. If the mapped state of the particular | |
2996 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2997 | ||
714835d5 UW |
2998 | int |
2999 | section_is_mapped (struct obj_section *osect) | |
c906108c | 3000 | { |
9216df95 UW |
3001 | struct gdbarch *gdbarch; |
3002 | ||
714835d5 | 3003 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3004 | return 0; |
3005 | ||
c5aa993b | 3006 | switch (overlay_debugging) |
c906108c SS |
3007 | { |
3008 | default: | |
d874f1e2 | 3009 | case ovly_off: |
c5aa993b | 3010 | return 0; /* overlay debugging off */ |
d874f1e2 | 3011 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3012 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3013 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3014 | gdbarch = get_objfile_arch (osect->objfile); |
3015 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3016 | { |
3017 | if (overlay_cache_invalid) | |
3018 | { | |
3019 | overlay_invalidate_all (); | |
3020 | overlay_cache_invalid = 0; | |
3021 | } | |
3022 | if (osect->ovly_mapped == -1) | |
9216df95 | 3023 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3024 | } |
86a73007 | 3025 | /* fall thru */ |
d874f1e2 | 3026 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3027 | return osect->ovly_mapped == 1; |
3028 | } | |
3029 | } | |
3030 | ||
c906108c SS |
3031 | /* Function: pc_in_unmapped_range |
3032 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3033 | ||
3034 | CORE_ADDR | |
714835d5 | 3035 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3036 | { |
714835d5 UW |
3037 | if (section_is_overlay (section)) |
3038 | { | |
3039 | bfd *abfd = section->objfile->obfd; | |
3040 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3041 | |
714835d5 UW |
3042 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3043 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3044 | CORE_ADDR offset = obj_section_offset (section); | |
3045 | ||
3046 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3047 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3048 | return 1; | |
3049 | } | |
c906108c | 3050 | |
c906108c SS |
3051 | return 0; |
3052 | } | |
3053 | ||
3054 | /* Function: pc_in_mapped_range | |
3055 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3056 | ||
3057 | CORE_ADDR | |
714835d5 | 3058 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3059 | { |
714835d5 UW |
3060 | if (section_is_overlay (section)) |
3061 | { | |
3062 | if (obj_section_addr (section) <= pc | |
3063 | && pc < obj_section_endaddr (section)) | |
3064 | return 1; | |
3065 | } | |
c906108c | 3066 | |
c906108c SS |
3067 | return 0; |
3068 | } | |
3069 | ||
9ec8e6a0 JB |
3070 | /* Return true if the mapped ranges of sections A and B overlap, false |
3071 | otherwise. */ | |
3b7bacac | 3072 | |
b9362cc7 | 3073 | static int |
714835d5 | 3074 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3075 | { |
714835d5 UW |
3076 | CORE_ADDR a_start = obj_section_addr (a); |
3077 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3078 | CORE_ADDR b_start = obj_section_addr (b); | |
3079 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3080 | |
3081 | return (a_start < b_end && b_start < a_end); | |
3082 | } | |
3083 | ||
c906108c SS |
3084 | /* Function: overlay_unmapped_address (PC, SECTION) |
3085 | Returns the address corresponding to PC in the unmapped (load) range. | |
3086 | May be the same as PC. */ | |
3087 | ||
3088 | CORE_ADDR | |
714835d5 | 3089 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3090 | { |
714835d5 UW |
3091 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3092 | { | |
714835d5 | 3093 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3094 | |
714835d5 UW |
3095 | return pc + bfd_section_lma (abfd, bfd_section) |
3096 | - bfd_section_vma (abfd, bfd_section); | |
3097 | } | |
c906108c SS |
3098 | |
3099 | return pc; | |
3100 | } | |
3101 | ||
3102 | /* Function: overlay_mapped_address (PC, SECTION) | |
3103 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3104 | May be the same as PC. */ | |
3105 | ||
3106 | CORE_ADDR | |
714835d5 | 3107 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3108 | { |
714835d5 UW |
3109 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3110 | { | |
714835d5 | 3111 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3112 | |
714835d5 UW |
3113 | return pc + bfd_section_vma (abfd, bfd_section) |
3114 | - bfd_section_lma (abfd, bfd_section); | |
3115 | } | |
c906108c SS |
3116 | |
3117 | return pc; | |
3118 | } | |
3119 | ||
5417f6dc | 3120 | /* Function: symbol_overlayed_address |
c906108c SS |
3121 | Return one of two addresses (relative to the VMA or to the LMA), |
3122 | depending on whether the section is mapped or not. */ | |
3123 | ||
c5aa993b | 3124 | CORE_ADDR |
714835d5 | 3125 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3126 | { |
3127 | if (overlay_debugging) | |
3128 | { | |
c378eb4e | 3129 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3130 | if (section == 0) |
3131 | return address; | |
c378eb4e MS |
3132 | /* If the symbol's section is not an overlay, just return its |
3133 | address. */ | |
c906108c SS |
3134 | if (!section_is_overlay (section)) |
3135 | return address; | |
c378eb4e | 3136 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3137 | if (section_is_mapped (section)) |
3138 | return address; | |
3139 | /* | |
3140 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3141 | * then return its LOADED address rather than its vma address!! | |
3142 | */ | |
3143 | return overlay_unmapped_address (address, section); | |
3144 | } | |
3145 | return address; | |
3146 | } | |
3147 | ||
5417f6dc | 3148 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3149 | Return the best-match overlay section for PC: |
3150 | If PC matches a mapped overlay section's VMA, return that section. | |
3151 | Else if PC matches an unmapped section's VMA, return that section. | |
3152 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3153 | ||
714835d5 | 3154 | struct obj_section * |
fba45db2 | 3155 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3156 | { |
c906108c SS |
3157 | struct obj_section *osect, *best_match = NULL; |
3158 | ||
3159 | if (overlay_debugging) | |
b631e59b | 3160 | { |
3b9d3ac2 TT |
3161 | for (objfile *objfile : all_objfiles (current_program_space)) |
3162 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
3163 | if (section_is_overlay (osect)) | |
3164 | { | |
3165 | if (pc_in_mapped_range (pc, osect)) | |
3166 | { | |
3167 | if (section_is_mapped (osect)) | |
3168 | return osect; | |
3169 | else | |
3170 | best_match = osect; | |
3171 | } | |
3172 | else if (pc_in_unmapped_range (pc, osect)) | |
3173 | best_match = osect; | |
3174 | } | |
b631e59b | 3175 | } |
714835d5 | 3176 | return best_match; |
c906108c SS |
3177 | } |
3178 | ||
3179 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3180 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3181 | currently marked as MAPPED, return that section. Else return NULL. */ |
3182 | ||
714835d5 | 3183 | struct obj_section * |
fba45db2 | 3184 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3185 | { |
c906108c SS |
3186 | struct obj_section *osect; |
3187 | ||
3188 | if (overlay_debugging) | |
b631e59b | 3189 | { |
3b9d3ac2 TT |
3190 | for (objfile *objfile : all_objfiles (current_program_space)) |
3191 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
3192 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3193 | return osect; | |
b631e59b | 3194 | } |
c906108c SS |
3195 | |
3196 | return NULL; | |
3197 | } | |
3198 | ||
3199 | /* Function: list_overlays_command | |
c378eb4e | 3200 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3201 | |
5d3055ad | 3202 | static void |
2cf311eb | 3203 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3204 | { |
c5aa993b | 3205 | int nmapped = 0; |
c906108c SS |
3206 | struct obj_section *osect; |
3207 | ||
3208 | if (overlay_debugging) | |
b631e59b | 3209 | { |
3b9d3ac2 TT |
3210 | for (objfile *objfile : all_objfiles (current_program_space)) |
3211 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
3212 | if (section_is_mapped (osect)) | |
3213 | { | |
3214 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3215 | const char *name; | |
3216 | bfd_vma lma, vma; | |
3217 | int size; | |
3218 | ||
3219 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3220 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3221 | size = bfd_get_section_size (osect->the_bfd_section); | |
3222 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3223 | ||
3224 | printf_filtered ("Section %s, loaded at ", name); | |
3225 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3226 | puts_filtered (" - "); | |
3227 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3228 | printf_filtered (", mapped at "); | |
3229 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3230 | puts_filtered (" - "); | |
3231 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3232 | puts_filtered ("\n"); | |
3233 | ||
3234 | nmapped++; | |
3235 | } | |
b631e59b | 3236 | } |
c906108c | 3237 | if (nmapped == 0) |
a3f17187 | 3238 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3239 | } |
3240 | ||
3241 | /* Function: map_overlay_command | |
3242 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3243 | ||
5d3055ad | 3244 | static void |
2cf311eb | 3245 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3246 | { |
c5aa993b | 3247 | struct obj_section *sec, *sec2; |
c906108c SS |
3248 | |
3249 | if (!overlay_debugging) | |
3e43a32a MS |
3250 | error (_("Overlay debugging not enabled. Use " |
3251 | "either the 'overlay auto' or\n" | |
3252 | "the 'overlay manual' command.")); | |
c906108c SS |
3253 | |
3254 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3255 | error (_("Argument required: name of an overlay section")); |
c906108c | 3256 | |
c378eb4e | 3257 | /* First, find a section matching the user supplied argument. */ |
3b9d3ac2 TT |
3258 | for (objfile *obj_file : all_objfiles (current_program_space)) |
3259 | ALL_OBJFILE_OSECTIONS (obj_file, sec) | |
3260 | if (!strcmp (bfd_section_name (obj_file->obfd, sec->the_bfd_section), | |
3261 | args)) | |
c5aa993b | 3262 | { |
3b9d3ac2 TT |
3263 | /* Now, check to see if the section is an overlay. */ |
3264 | if (!section_is_overlay (sec)) | |
3265 | continue; /* not an overlay section */ | |
3266 | ||
3267 | /* Mark the overlay as "mapped". */ | |
3268 | sec->ovly_mapped = 1; | |
3269 | ||
3270 | /* Next, make a pass and unmap any sections that are | |
3271 | overlapped by this new section: */ | |
3272 | for (objfile *objfile2 : all_objfiles (current_program_space)) | |
3273 | ALL_OBJFILE_OSECTIONS (objfile2, sec2) | |
3274 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, | |
3275 | sec2)) | |
3276 | { | |
3277 | if (info_verbose) | |
3278 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), | |
3279 | bfd_section_name (obj_file->obfd, | |
3280 | sec2->the_bfd_section)); | |
3281 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ | |
3282 | } | |
3283 | return; | |
c5aa993b | 3284 | } |
8a3fe4f8 | 3285 | error (_("No overlay section called %s"), args); |
c906108c SS |
3286 | } |
3287 | ||
3288 | /* Function: unmap_overlay_command | |
5417f6dc | 3289 | Mark the overlay section as unmapped |
c906108c SS |
3290 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3291 | ||
5d3055ad | 3292 | static void |
2cf311eb | 3293 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3294 | { |
7a270e0c | 3295 | struct obj_section *sec = NULL; |
c906108c SS |
3296 | |
3297 | if (!overlay_debugging) | |
3e43a32a MS |
3298 | error (_("Overlay debugging not enabled. " |
3299 | "Use either the 'overlay auto' or\n" | |
3300 | "the 'overlay manual' command.")); | |
c906108c SS |
3301 | |
3302 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3303 | error (_("Argument required: name of an overlay section")); |
c906108c | 3304 | |
c378eb4e | 3305 | /* First, find a section matching the user supplied argument. */ |
3b9d3ac2 TT |
3306 | for (objfile *objfile : all_objfiles (current_program_space)) |
3307 | ALL_OBJFILE_OSECTIONS (objfile, sec) | |
3308 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
3309 | { | |
3310 | if (!sec->ovly_mapped) | |
3311 | error (_("Section %s is not mapped"), args); | |
3312 | sec->ovly_mapped = 0; | |
3313 | return; | |
3314 | } | |
8a3fe4f8 | 3315 | error (_("No overlay section called %s"), args); |
c906108c SS |
3316 | } |
3317 | ||
3318 | /* Function: overlay_auto_command | |
3319 | A utility command to turn on overlay debugging. | |
c378eb4e | 3320 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3321 | |
3322 | static void | |
2cf311eb | 3323 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3324 | { |
d874f1e2 | 3325 | overlay_debugging = ovly_auto; |
1900040c | 3326 | enable_overlay_breakpoints (); |
c906108c | 3327 | if (info_verbose) |
a3f17187 | 3328 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3329 | } |
3330 | ||
3331 | /* Function: overlay_manual_command | |
3332 | A utility command to turn on overlay debugging. | |
c378eb4e | 3333 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3334 | |
3335 | static void | |
2cf311eb | 3336 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3337 | { |
d874f1e2 | 3338 | overlay_debugging = ovly_on; |
1900040c | 3339 | disable_overlay_breakpoints (); |
c906108c | 3340 | if (info_verbose) |
a3f17187 | 3341 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3342 | } |
3343 | ||
3344 | /* Function: overlay_off_command | |
3345 | A utility command to turn on overlay debugging. | |
c378eb4e | 3346 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3347 | |
3348 | static void | |
2cf311eb | 3349 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3350 | { |
d874f1e2 | 3351 | overlay_debugging = ovly_off; |
1900040c | 3352 | disable_overlay_breakpoints (); |
c906108c | 3353 | if (info_verbose) |
a3f17187 | 3354 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3355 | } |
3356 | ||
3357 | static void | |
2cf311eb | 3358 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3359 | { |
e17c207e UW |
3360 | struct gdbarch *gdbarch = get_current_arch (); |
3361 | ||
3362 | if (gdbarch_overlay_update_p (gdbarch)) | |
3363 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3364 | else |
8a3fe4f8 | 3365 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3366 | } |
3367 | ||
3368 | /* Function: overlay_command | |
c378eb4e | 3369 | A place-holder for a mis-typed command. */ |
c906108c | 3370 | |
c378eb4e | 3371 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3372 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3373 | |
3374 | static void | |
981a3fb3 | 3375 | overlay_command (const char *args, int from_tty) |
c906108c | 3376 | { |
c5aa993b | 3377 | printf_unfiltered |
c906108c | 3378 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3379 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3380 | } |
3381 | ||
c906108c SS |
3382 | /* Target Overlays for the "Simplest" overlay manager: |
3383 | ||
5417f6dc RM |
3384 | This is GDB's default target overlay layer. It works with the |
3385 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3386 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3387 | so targets that use a different runtime overlay manager can |
c906108c SS |
3388 | substitute their own overlay_update function and take over the |
3389 | function pointer. | |
3390 | ||
3391 | The overlay_update function pokes around in the target's data structures | |
3392 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3393 | this information. | |
3394 | ||
3395 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3396 | unsigned _novlys; /# number of overlay sections #/ |
3397 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3398 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3399 | {..., ..., ..., ...}, |
3400 | } | |
3401 | unsigned _novly_regions; /# number of overlay regions #/ | |
3402 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3403 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3404 | {..., ..., ...}, |
3405 | } | |
c906108c SS |
3406 | These functions will attempt to update GDB's mappedness state in the |
3407 | symbol section table, based on the target's mappedness state. | |
3408 | ||
3409 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3410 | attempt to detect when the cached copy is invalidated. The main | |
3411 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3412 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3413 | the target (whenever possible). */ |
c906108c SS |
3414 | |
3415 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3416 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3417 | static unsigned cache_novlys = 0; |
c906108c | 3418 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3419 | enum ovly_index |
3420 | { | |
438e1e42 | 3421 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3422 | }; |
c906108c | 3423 | |
c378eb4e | 3424 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3425 | |
c906108c | 3426 | static void |
fba45db2 | 3427 | simple_free_overlay_table (void) |
c906108c SS |
3428 | { |
3429 | if (cache_ovly_table) | |
b8c9b27d | 3430 | xfree (cache_ovly_table); |
c5aa993b | 3431 | cache_novlys = 0; |
c906108c SS |
3432 | cache_ovly_table = NULL; |
3433 | cache_ovly_table_base = 0; | |
3434 | } | |
3435 | ||
9216df95 | 3436 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3437 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3438 | |
c906108c | 3439 | static void |
9216df95 | 3440 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3441 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3442 | { |
c378eb4e | 3443 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3444 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3445 | int i; |
c906108c | 3446 | |
9216df95 | 3447 | read_memory (memaddr, buf, len * size); |
c906108c | 3448 | for (i = 0; i < len; i++) |
e17a4113 | 3449 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3450 | } |
3451 | ||
3452 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3453 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3454 | |
c5aa993b | 3455 | static int |
fba45db2 | 3456 | simple_read_overlay_table (void) |
c906108c | 3457 | { |
3b7344d5 | 3458 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3459 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3460 | struct gdbarch *gdbarch; |
3461 | int word_size; | |
e17a4113 | 3462 | enum bfd_endian byte_order; |
c906108c SS |
3463 | |
3464 | simple_free_overlay_table (); | |
9b27852e | 3465 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3466 | if (! novlys_msym.minsym) |
c906108c | 3467 | { |
8a3fe4f8 | 3468 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3469 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3470 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3471 | return 0; |
c906108c | 3472 | } |
0d43edd1 | 3473 | |
7c7b6655 TT |
3474 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3475 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3476 | { |
8a3fe4f8 | 3477 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3478 | "`_ovly_table' array\n" |
8a3fe4f8 | 3479 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3480 | return 0; |
3481 | } | |
3482 | ||
7c7b6655 | 3483 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3484 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3485 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3486 | |
77e371c0 TT |
3487 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3488 | 4, byte_order); | |
0d43edd1 | 3489 | cache_ovly_table |
224c3ddb | 3490 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3491 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3492 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3493 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3494 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3495 | |
c5aa993b | 3496 | return 1; /* SUCCESS */ |
c906108c SS |
3497 | } |
3498 | ||
5417f6dc | 3499 | /* Function: simple_overlay_update_1 |
c906108c SS |
3500 | A helper function for simple_overlay_update. Assuming a cached copy |
3501 | of _ovly_table exists, look through it to find an entry whose vma, | |
3502 | lma and size match those of OSECT. Re-read the entry and make sure | |
3503 | it still matches OSECT (else the table may no longer be valid). | |
3504 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3505 | success, 0 for failure. */ | |
3506 | ||
3507 | static int | |
fba45db2 | 3508 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3509 | { |
764c99c1 | 3510 | int i; |
fbd35540 | 3511 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3512 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3513 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3514 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3515 | |
c906108c | 3516 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3517 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3518 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3519 | { |
9216df95 UW |
3520 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3521 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3522 | 4, word_size, byte_order); |
fbd35540 | 3523 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3524 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3525 | { |
3526 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3527 | return 1; | |
3528 | } | |
c378eb4e | 3529 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3530 | return 0; |
3531 | } | |
3532 | return 0; | |
3533 | } | |
3534 | ||
3535 | /* Function: simple_overlay_update | |
5417f6dc RM |
3536 | If OSECT is NULL, then update all sections' mapped state |
3537 | (after re-reading the entire target _ovly_table). | |
3538 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3539 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3540 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3541 | re-read the entire cache, and go ahead and update all sections. */ |
3542 | ||
1c772458 | 3543 | void |
fba45db2 | 3544 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3545 | { |
c378eb4e | 3546 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3547 | if (osect) |
c378eb4e | 3548 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3549 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3550 | { |
3551 | /* Does its cached location match what's currently in the | |
3552 | symtab? */ | |
3b7344d5 | 3553 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3554 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3555 | ||
3b7344d5 | 3556 | if (minsym.minsym == NULL) |
9cc89665 MS |
3557 | error (_("Error reading inferior's overlay table: couldn't " |
3558 | "find `_ovly_table' array\n" | |
3559 | "in inferior. Use `overlay manual' mode.")); | |
3560 | ||
77e371c0 | 3561 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3562 | /* Then go ahead and try to look up this single section in |
3563 | the cache. */ | |
3564 | if (simple_overlay_update_1 (osect)) | |
3565 | /* Found it! We're done. */ | |
3566 | return; | |
3567 | } | |
c906108c SS |
3568 | |
3569 | /* Cached table no good: need to read the entire table anew. | |
3570 | Or else we want all the sections, in which case it's actually | |
3571 | more efficient to read the whole table in one block anyway. */ | |
3572 | ||
0d43edd1 JB |
3573 | if (! simple_read_overlay_table ()) |
3574 | return; | |
3575 | ||
c378eb4e | 3576 | /* Now may as well update all sections, even if only one was requested. */ |
3b9d3ac2 TT |
3577 | for (objfile *objfile : all_objfiles (current_program_space)) |
3578 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
3579 | if (section_is_overlay (osect)) | |
3580 | { | |
3581 | int i; | |
3582 | asection *bsect = osect->the_bfd_section; | |
3583 | ||
3584 | for (i = 0; i < cache_novlys; i++) | |
3585 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) | |
3586 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) | |
3587 | { /* obj_section matches i'th entry in ovly_table. */ | |
3588 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3589 | break; /* finished with inner for loop: break out. */ | |
3590 | } | |
3591 | } | |
c906108c SS |
3592 | } |
3593 | ||
086df311 DJ |
3594 | /* Set the output sections and output offsets for section SECTP in |
3595 | ABFD. The relocation code in BFD will read these offsets, so we | |
3596 | need to be sure they're initialized. We map each section to itself, | |
3597 | with no offset; this means that SECTP->vma will be honored. */ | |
3598 | ||
3599 | static void | |
3600 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3601 | { | |
3602 | sectp->output_section = sectp; | |
3603 | sectp->output_offset = 0; | |
3604 | } | |
3605 | ||
ac8035ab TG |
3606 | /* Default implementation for sym_relocate. */ |
3607 | ||
ac8035ab TG |
3608 | bfd_byte * |
3609 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3610 | bfd_byte *buf) | |
3611 | { | |
3019eac3 DE |
3612 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3613 | DWO file. */ | |
3614 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3615 | |
3616 | /* We're only interested in sections with relocation | |
3617 | information. */ | |
3618 | if ((sectp->flags & SEC_RELOC) == 0) | |
3619 | return NULL; | |
3620 | ||
3621 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3622 | all sections begin at 0. */ | |
3623 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3624 | ||
3625 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3626 | } | |
3627 | ||
086df311 DJ |
3628 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3629 | contents are stored in BUF if it is non-NULL, or returned in a | |
3630 | malloc'd buffer otherwise. | |
3631 | ||
3632 | For some platforms and debug info formats, shared libraries contain | |
3633 | relocations against the debug sections (particularly for DWARF-2; | |
3634 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3635 | the version of the linker in use). Also, ELF object files naturally | |
3636 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3637 | the relocations in order to get the locations of symbols correct. |
3638 | Another example that may require relocation processing, is the | |
3639 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3640 | debug section. */ | |
086df311 DJ |
3641 | |
3642 | bfd_byte * | |
ac8035ab TG |
3643 | symfile_relocate_debug_section (struct objfile *objfile, |
3644 | asection *sectp, bfd_byte *buf) | |
086df311 | 3645 | { |
ac8035ab | 3646 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3647 | |
ac8035ab | 3648 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3649 | } |
c906108c | 3650 | |
31d99776 DJ |
3651 | struct symfile_segment_data * |
3652 | get_symfile_segment_data (bfd *abfd) | |
3653 | { | |
00b5771c | 3654 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3655 | |
3656 | if (sf == NULL) | |
3657 | return NULL; | |
3658 | ||
3659 | return sf->sym_segments (abfd); | |
3660 | } | |
3661 | ||
3662 | void | |
3663 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3664 | { | |
3665 | xfree (data->segment_bases); | |
3666 | xfree (data->segment_sizes); | |
3667 | xfree (data->segment_info); | |
3668 | xfree (data); | |
3669 | } | |
3670 | ||
28c32713 JB |
3671 | /* Given: |
3672 | - DATA, containing segment addresses from the object file ABFD, and | |
3673 | the mapping from ABFD's sections onto the segments that own them, | |
3674 | and | |
3675 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3676 | segment addresses reported by the target, | |
3677 | store the appropriate offsets for each section in OFFSETS. | |
3678 | ||
3679 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3680 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3681 | ||
8d385431 DJ |
3682 | If there are more entries, then ignore the extra. The target may |
3683 | not be able to distinguish between an empty data segment and a | |
3684 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3685 | |
31d99776 | 3686 | int |
3189cb12 DE |
3687 | symfile_map_offsets_to_segments (bfd *abfd, |
3688 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3689 | struct section_offsets *offsets, |
3690 | int num_segment_bases, | |
3691 | const CORE_ADDR *segment_bases) | |
3692 | { | |
3693 | int i; | |
3694 | asection *sect; | |
3695 | ||
28c32713 JB |
3696 | /* It doesn't make sense to call this function unless you have some |
3697 | segment base addresses. */ | |
202b96c1 | 3698 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3699 | |
31d99776 DJ |
3700 | /* If we do not have segment mappings for the object file, we |
3701 | can not relocate it by segments. */ | |
3702 | gdb_assert (data != NULL); | |
3703 | gdb_assert (data->num_segments > 0); | |
3704 | ||
31d99776 DJ |
3705 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3706 | { | |
31d99776 DJ |
3707 | int which = data->segment_info[i]; |
3708 | ||
28c32713 JB |
3709 | gdb_assert (0 <= which && which <= data->num_segments); |
3710 | ||
3711 | /* Don't bother computing offsets for sections that aren't | |
3712 | loaded as part of any segment. */ | |
3713 | if (! which) | |
3714 | continue; | |
3715 | ||
3716 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3717 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3718 | if (which > num_segment_bases) |
28c32713 | 3719 | which = num_segment_bases; |
31d99776 | 3720 | |
28c32713 JB |
3721 | offsets->offsets[i] = (segment_bases[which - 1] |
3722 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3723 | } |
3724 | ||
3725 | return 1; | |
3726 | } | |
3727 | ||
3728 | static void | |
3729 | symfile_find_segment_sections (struct objfile *objfile) | |
3730 | { | |
3731 | bfd *abfd = objfile->obfd; | |
3732 | int i; | |
3733 | asection *sect; | |
3734 | struct symfile_segment_data *data; | |
3735 | ||
3736 | data = get_symfile_segment_data (objfile->obfd); | |
3737 | if (data == NULL) | |
3738 | return; | |
3739 | ||
3740 | if (data->num_segments != 1 && data->num_segments != 2) | |
3741 | { | |
3742 | free_symfile_segment_data (data); | |
3743 | return; | |
3744 | } | |
3745 | ||
3746 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3747 | { | |
31d99776 DJ |
3748 | int which = data->segment_info[i]; |
3749 | ||
3750 | if (which == 1) | |
3751 | { | |
3752 | if (objfile->sect_index_text == -1) | |
3753 | objfile->sect_index_text = sect->index; | |
3754 | ||
3755 | if (objfile->sect_index_rodata == -1) | |
3756 | objfile->sect_index_rodata = sect->index; | |
3757 | } | |
3758 | else if (which == 2) | |
3759 | { | |
3760 | if (objfile->sect_index_data == -1) | |
3761 | objfile->sect_index_data = sect->index; | |
3762 | ||
3763 | if (objfile->sect_index_bss == -1) | |
3764 | objfile->sect_index_bss = sect->index; | |
3765 | } | |
3766 | } | |
3767 | ||
3768 | free_symfile_segment_data (data); | |
3769 | } | |
3770 | ||
76ad5e1e NB |
3771 | /* Listen for free_objfile events. */ |
3772 | ||
3773 | static void | |
3774 | symfile_free_objfile (struct objfile *objfile) | |
3775 | { | |
c33b2f12 MM |
3776 | /* Remove the target sections owned by this objfile. */ |
3777 | if (objfile != NULL) | |
76ad5e1e NB |
3778 | remove_target_sections ((void *) objfile); |
3779 | } | |
3780 | ||
540c2971 DE |
3781 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3782 | Expand all symtabs that match the specified criteria. | |
3783 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3784 | ||
3785 | void | |
14bc53a8 PA |
3786 | expand_symtabs_matching |
3787 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3788 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3789 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3790 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3791 | enum search_domain kind) | |
540c2971 | 3792 | { |
aed57c53 TT |
3793 | for (objfile *objfile : all_objfiles (current_program_space)) |
3794 | { | |
3795 | if (objfile->sf) | |
3796 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, | |
3797 | lookup_name, | |
3798 | symbol_matcher, | |
3799 | expansion_notify, kind); | |
3800 | } | |
540c2971 DE |
3801 | } |
3802 | ||
3803 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3804 | Map function FUN over every file. | |
3805 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3806 | ||
3807 | void | |
bb4142cf DE |
3808 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3809 | int need_fullname) | |
540c2971 | 3810 | { |
aed57c53 TT |
3811 | for (objfile *objfile : all_objfiles (current_program_space)) |
3812 | { | |
3813 | if (objfile->sf) | |
3814 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3815 | need_fullname); | |
3816 | } | |
540c2971 DE |
3817 | } |
3818 | ||
32fa66eb SM |
3819 | #if GDB_SELF_TEST |
3820 | ||
3821 | namespace selftests { | |
3822 | namespace filename_language { | |
3823 | ||
32fa66eb SM |
3824 | static void test_filename_language () |
3825 | { | |
3826 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3827 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3828 | |
3829 | /* Test deducing an unknown extension. */ | |
3830 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3831 | SELF_CHECK (lang == language_unknown); | |
3832 | ||
3833 | /* Test deducing a known extension. */ | |
3834 | lang = deduce_language_from_filename ("myfile.c"); | |
3835 | SELF_CHECK (lang == language_c); | |
3836 | ||
3837 | /* Test adding a new extension using the internal API. */ | |
3838 | add_filename_language (".blah", language_pascal); | |
3839 | lang = deduce_language_from_filename ("myfile.blah"); | |
3840 | SELF_CHECK (lang == language_pascal); | |
3841 | } | |
3842 | ||
3843 | static void | |
3844 | test_set_ext_lang_command () | |
3845 | { | |
3846 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3847 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3848 | |
3849 | /* Confirm that the .hello extension is not known. */ | |
3850 | language lang = deduce_language_from_filename ("cake.hello"); | |
3851 | SELF_CHECK (lang == language_unknown); | |
3852 | ||
3853 | /* Test adding a new extension using the CLI command. */ | |
3854 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3855 | ext_args = args_holder.get (); | |
3856 | set_ext_lang_command (NULL, 1, NULL); | |
3857 | ||
3858 | lang = deduce_language_from_filename ("cake.hello"); | |
3859 | SELF_CHECK (lang == language_rust); | |
3860 | ||
3861 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3862 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3863 | args_holder.reset (xstrdup (".hello pascal")); |
3864 | ext_args = args_holder.get (); | |
3865 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3866 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3867 | |
3868 | lang = deduce_language_from_filename ("cake.hello"); | |
3869 | SELF_CHECK (lang == language_pascal); | |
3870 | SELF_CHECK (size_before == size_after); | |
3871 | } | |
3872 | ||
3873 | } /* namespace filename_language */ | |
3874 | } /* namespace selftests */ | |
3875 | ||
3876 | #endif /* GDB_SELF_TEST */ | |
3877 | ||
c906108c | 3878 | void |
fba45db2 | 3879 | _initialize_symfile (void) |
c906108c SS |
3880 | { |
3881 | struct cmd_list_element *c; | |
c5aa993b | 3882 | |
76727919 | 3883 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3884 | |
97cbe998 | 3885 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3886 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3887 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3888 | faster.\n\ |
3889 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3890 | symbolic debug information." | |
8ca2f0b9 | 3891 | |
1a966eab AC |
3892 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3893 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3894 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3895 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3896 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3897 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3898 | set_cmd_completer (c, filename_completer); |
c906108c | 3899 | |
1a966eab | 3900 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3901 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3902 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3903 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3904 | ADDR is the starting address of the file's text.\n\ |
3905 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3906 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3907 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3908 | OFF is an optional offset which is added to the default load addresses\n\ | |
3909 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3910 | READNOW_READNEVER_HELP), |
c906108c | 3911 | &cmdlist); |
5ba2abeb | 3912 | set_cmd_completer (c, filename_completer); |
c906108c | 3913 | |
63644780 NB |
3914 | c = add_cmd ("remove-symbol-file", class_files, |
3915 | remove_symbol_file_command, _("\ | |
3916 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3917 | Usage: remove-symbol-file FILENAME\n\ | |
3918 | remove-symbol-file -a ADDRESS\n\ | |
3919 | The file to remove can be identified by its filename or by an address\n\ | |
3920 | that lies within the boundaries of this symbol file in memory."), | |
3921 | &cmdlist); | |
3922 | ||
1a966eab AC |
3923 | c = add_cmd ("load", class_files, load_command, _("\ |
3924 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3925 | for access from GDB.\n\ |
8ca2f0b9 | 3926 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3927 | An optional load OFFSET may also be given as a literal address.\n\ |
3928 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3929 | on its own."), &cmdlist); |
5ba2abeb | 3930 | set_cmd_completer (c, filename_completer); |
c906108c | 3931 | |
c5aa993b | 3932 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3933 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3934 | "overlay ", 0, &cmdlist); |
3935 | ||
3936 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3937 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3938 | ||
c5aa993b | 3939 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3940 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3941 | |
c5aa993b | 3942 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3943 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3944 | |
c5aa993b | 3945 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3946 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3947 | |
c5aa993b | 3948 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3949 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3950 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3951 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3952 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3953 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3954 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3955 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3956 | |
3957 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3958 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3959 | &ext_args, _("\ | |
3960 | Set mapping between filename extension and source language."), _("\ | |
3961 | Show mapping between filename extension and source language."), _("\ | |
3962 | Usage: set extension-language .foo bar"), | |
3963 | set_ext_lang_command, | |
920d2a44 | 3964 | show_ext_args, |
26c41df3 | 3965 | &setlist, &showlist); |
c906108c | 3966 | |
c5aa993b | 3967 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3968 | _("All filename extensions associated with a source language.")); |
917317f4 | 3969 | |
525226b5 AC |
3970 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3971 | &debug_file_directory, _("\ | |
24ddea62 JK |
3972 | Set the directories where separate debug symbols are searched for."), _("\ |
3973 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3974 | Separate debug symbols are first searched for in the same\n\ |
3975 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3976 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3977 | each global debug-file-directory component prepended."), |
525226b5 | 3978 | NULL, |
920d2a44 | 3979 | show_debug_file_directory, |
525226b5 | 3980 | &setlist, &showlist); |
770e7fc7 DE |
3981 | |
3982 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3983 | print_symbol_loading_enums, &print_symbol_loading, | |
3984 | _("\ | |
3985 | Set printing of symbol loading messages."), _("\ | |
3986 | Show printing of symbol loading messages."), _("\ | |
3987 | off == turn all messages off\n\ | |
3988 | brief == print messages for the executable,\n\ | |
3989 | and brief messages for shared libraries\n\ | |
3990 | full == print messages for the executable,\n\ | |
3991 | and messages for each shared library."), | |
3992 | NULL, | |
3993 | NULL, | |
3994 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3995 | |
3996 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3997 | &separate_debug_file_debug, _("\ | |
3998 | Set printing of separate debug info file search debug."), _("\ | |
3999 | Show printing of separate debug info file search debug."), _("\ | |
4000 | When on, GDB prints the searched locations while looking for separate debug \ | |
4001 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4002 | |
4003 | #if GDB_SELF_TEST | |
4004 | selftests::register_test | |
4005 | ("filename_language", selftests::filename_language::test_filename_language); | |
4006 | selftests::register_test | |
4007 | ("set_ext_lang_command", | |
4008 | selftests::filename_language::test_set_ext_lang_command); | |
4009 | #endif | |
c906108c | 4010 | } |