Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
e2882c85 | 3 | Copyright (C) 1990-2018 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 | |
e80aaf61 SM |
1436 | std::vector<gdb::unique_xmalloc_ptr<char>> debugdir_vec |
1437 | = dirnames_to_char_ptr_vec (debug_file_directory); | |
24ddea62 | 1438 | |
e80aaf61 | 1439 | for (const gdb::unique_xmalloc_ptr<char> &debugdir : debugdir_vec) |
e4ab2fad | 1440 | { |
a8dbfd58 SM |
1441 | debugfile = debugdir.get (); |
1442 | debugfile += "/"; | |
1443 | debugfile += dir; | |
1444 | debugfile += debuglink; | |
aa28a74e | 1445 | |
32a0e547 | 1446 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1447 | return debugfile; |
24ddea62 JK |
1448 | |
1449 | /* If the file is in the sysroot, try using its base path in the | |
1450 | global debugfile directory. */ | |
1db33378 PP |
1451 | if (canon_dir != NULL |
1452 | && filename_ncmp (canon_dir, gdb_sysroot, | |
0ba1096a | 1453 | strlen (gdb_sysroot)) == 0 |
1db33378 | 1454 | && IS_DIR_SEPARATOR (canon_dir[strlen (gdb_sysroot)])) |
24ddea62 | 1455 | { |
a8dbfd58 SM |
1456 | debugfile = debugdir.get (); |
1457 | debugfile += (canon_dir + strlen (gdb_sysroot)); | |
1458 | debugfile += "/"; | |
1459 | debugfile += debuglink; | |
24ddea62 | 1460 | |
32a0e547 | 1461 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
e80aaf61 | 1462 | return debugfile; |
24ddea62 | 1463 | } |
aa28a74e | 1464 | } |
f888f159 | 1465 | |
a8dbfd58 | 1466 | return std::string (); |
1db33378 PP |
1467 | } |
1468 | ||
7edbb660 | 1469 | /* Modify PATH to contain only "[/]directory/" part of PATH. |
1db33378 PP |
1470 | If there were no directory separators in PATH, PATH will be empty |
1471 | string on return. */ | |
1472 | ||
1473 | static void | |
1474 | terminate_after_last_dir_separator (char *path) | |
1475 | { | |
1476 | int i; | |
1477 | ||
1478 | /* Strip off the final filename part, leaving the directory name, | |
1479 | followed by a slash. The directory can be relative or absolute. */ | |
1480 | for (i = strlen(path) - 1; i >= 0; i--) | |
1481 | if (IS_DIR_SEPARATOR (path[i])) | |
1482 | break; | |
1483 | ||
1484 | /* If I is -1 then no directory is present there and DIR will be "". */ | |
1485 | path[i + 1] = '\0'; | |
1486 | } | |
1487 | ||
1488 | /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section). | |
a8dbfd58 | 1489 | Returns pathname, or an empty string. */ |
1db33378 | 1490 | |
a8dbfd58 | 1491 | std::string |
1db33378 PP |
1492 | find_separate_debug_file_by_debuglink (struct objfile *objfile) |
1493 | { | |
1db33378 | 1494 | unsigned long crc32; |
1db33378 | 1495 | |
5eae7aea TT |
1496 | gdb::unique_xmalloc_ptr<char> debuglink |
1497 | (bfd_get_debug_link_info (objfile->obfd, &crc32)); | |
1db33378 PP |
1498 | |
1499 | if (debuglink == NULL) | |
1500 | { | |
1501 | /* There's no separate debug info, hence there's no way we could | |
1502 | load it => no warning. */ | |
a8dbfd58 | 1503 | return std::string (); |
1db33378 PP |
1504 | } |
1505 | ||
5eae7aea TT |
1506 | std::string dir = objfile_name (objfile); |
1507 | terminate_after_last_dir_separator (&dir[0]); | |
1508 | gdb::unique_xmalloc_ptr<char> canon_dir (lrealpath (dir.c_str ())); | |
1db33378 | 1509 | |
a8dbfd58 SM |
1510 | std::string debugfile |
1511 | = find_separate_debug_file (dir.c_str (), canon_dir.get (), | |
1512 | debuglink.get (), crc32, objfile); | |
1db33378 | 1513 | |
a8dbfd58 | 1514 | if (debugfile.empty ()) |
1db33378 | 1515 | { |
1db33378 PP |
1516 | /* For PR gdb/9538, try again with realpath (if different from the |
1517 | original). */ | |
1518 | ||
1519 | struct stat st_buf; | |
1520 | ||
4262abfb JK |
1521 | if (lstat (objfile_name (objfile), &st_buf) == 0 |
1522 | && S_ISLNK (st_buf.st_mode)) | |
1db33378 | 1523 | { |
5eae7aea TT |
1524 | gdb::unique_xmalloc_ptr<char> symlink_dir |
1525 | (lrealpath (objfile_name (objfile))); | |
1db33378 PP |
1526 | if (symlink_dir != NULL) |
1527 | { | |
5eae7aea TT |
1528 | terminate_after_last_dir_separator (symlink_dir.get ()); |
1529 | if (dir != symlink_dir.get ()) | |
1db33378 PP |
1530 | { |
1531 | /* Different directory, so try using it. */ | |
5eae7aea TT |
1532 | debugfile = find_separate_debug_file (symlink_dir.get (), |
1533 | symlink_dir.get (), | |
1534 | debuglink.get (), | |
1db33378 PP |
1535 | crc32, |
1536 | objfile); | |
1537 | } | |
1538 | } | |
1539 | } | |
1db33378 | 1540 | } |
aa28a74e | 1541 | |
25522fae | 1542 | return debugfile; |
5b5d99cf JB |
1543 | } |
1544 | ||
97cbe998 SDJ |
1545 | /* Make sure that OBJF_{READNOW,READNEVER} are not set |
1546 | simultaneously. */ | |
1547 | ||
1548 | static void | |
1549 | validate_readnow_readnever (objfile_flags flags) | |
1550 | { | |
1551 | if ((flags & OBJF_READNOW) && (flags & OBJF_READNEVER)) | |
1552 | error (_("-readnow and -readnever cannot be used simultaneously")); | |
1553 | } | |
1554 | ||
c906108c SS |
1555 | /* This is the symbol-file command. Read the file, analyze its |
1556 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1557 | the command is rather bizarre: |
1558 | ||
1559 | 1. The function buildargv implements various quoting conventions | |
1560 | which are undocumented and have little or nothing in common with | |
1561 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1562 | ||
1563 | 2. Options are used, which are not generally used in GDB (perhaps | |
1564 | "set mapped on", "set readnow on" would be better) | |
1565 | ||
1566 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1567 | conventions (because it is confusing and inconvenient). */ |
1568 | ||
1569 | void | |
1d8b34a7 | 1570 | symbol_file_command (const char *args, int from_tty) |
c906108c | 1571 | { |
c906108c SS |
1572 | dont_repeat (); |
1573 | ||
1574 | if (args == NULL) | |
1575 | { | |
1adeb98a | 1576 | symbol_file_clear (from_tty); |
c906108c SS |
1577 | } |
1578 | else | |
1579 | { | |
b15cc25c | 1580 | objfile_flags flags = OBJF_USERLOADED; |
ecf45d2c | 1581 | symfile_add_flags add_flags = 0; |
cb2f3a29 | 1582 | char *name = NULL; |
40fc416f | 1583 | bool stop_processing_options = false; |
d4d429d5 | 1584 | CORE_ADDR offset = 0; |
40fc416f SDJ |
1585 | int idx; |
1586 | char *arg; | |
cb2f3a29 | 1587 | |
ecf45d2c SL |
1588 | if (from_tty) |
1589 | add_flags |= SYMFILE_VERBOSE; | |
1590 | ||
773a1edc | 1591 | gdb_argv built_argv (args); |
40fc416f | 1592 | for (arg = built_argv[0], idx = 0; arg != NULL; arg = built_argv[++idx]) |
c906108c | 1593 | { |
40fc416f | 1594 | if (stop_processing_options || *arg != '-') |
7f0f8ac8 | 1595 | { |
40fc416f SDJ |
1596 | if (name == NULL) |
1597 | name = arg; | |
1598 | else | |
1599 | error (_("Unrecognized argument \"%s\""), arg); | |
7f0f8ac8 | 1600 | } |
40fc416f SDJ |
1601 | else if (strcmp (arg, "-readnow") == 0) |
1602 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
1603 | else if (strcmp (arg, "-readnever") == 0) |
1604 | flags |= OBJF_READNEVER; | |
d4d429d5 PT |
1605 | else if (strcmp (arg, "-o") == 0) |
1606 | { | |
1607 | arg = built_argv[++idx]; | |
1608 | if (arg == NULL) | |
1609 | error (_("Missing argument to -o")); | |
1610 | ||
1611 | offset = parse_and_eval_address (arg); | |
1612 | } | |
40fc416f SDJ |
1613 | else if (strcmp (arg, "--") == 0) |
1614 | stop_processing_options = true; | |
1615 | else | |
1616 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c SS |
1617 | } |
1618 | ||
1619 | if (name == NULL) | |
cb2f3a29 | 1620 | error (_("no symbol file name was specified")); |
40fc416f | 1621 | |
97cbe998 SDJ |
1622 | validate_readnow_readnever (flags); |
1623 | ||
d4d429d5 | 1624 | symbol_file_add_main_1 (name, add_flags, flags, offset); |
c906108c SS |
1625 | } |
1626 | } | |
1627 | ||
1628 | /* Set the initial language. | |
1629 | ||
cb2f3a29 MK |
1630 | FIXME: A better solution would be to record the language in the |
1631 | psymtab when reading partial symbols, and then use it (if known) to | |
1632 | set the language. This would be a win for formats that encode the | |
1633 | language in an easily discoverable place, such as DWARF. For | |
1634 | stabs, we can jump through hoops looking for specially named | |
1635 | symbols or try to intuit the language from the specific type of | |
1636 | stabs we find, but we can't do that until later when we read in | |
1637 | full symbols. */ | |
c906108c | 1638 | |
8b60591b | 1639 | void |
fba45db2 | 1640 | set_initial_language (void) |
c906108c | 1641 | { |
9e6c82ad | 1642 | enum language lang = main_language (); |
c906108c | 1643 | |
9e6c82ad | 1644 | if (lang == language_unknown) |
01f8c46d | 1645 | { |
bf6d8a91 | 1646 | char *name = main_name (); |
d12307c1 | 1647 | struct symbol *sym = lookup_symbol (name, NULL, VAR_DOMAIN, NULL).symbol; |
f888f159 | 1648 | |
bf6d8a91 TT |
1649 | if (sym != NULL) |
1650 | lang = SYMBOL_LANGUAGE (sym); | |
01f8c46d | 1651 | } |
cb2f3a29 | 1652 | |
ccefe4c4 TT |
1653 | if (lang == language_unknown) |
1654 | { | |
1655 | /* Make C the default language */ | |
1656 | lang = language_c; | |
c906108c | 1657 | } |
ccefe4c4 TT |
1658 | |
1659 | set_language (lang); | |
1660 | expected_language = current_language; /* Don't warn the user. */ | |
c906108c SS |
1661 | } |
1662 | ||
cb2f3a29 MK |
1663 | /* Open the file specified by NAME and hand it off to BFD for |
1664 | preliminary analysis. Return a newly initialized bfd *, which | |
1665 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1666 | absolute). In case of trouble, error() is called. */ | |
c906108c | 1667 | |
192b62ce | 1668 | gdb_bfd_ref_ptr |
97a41605 | 1669 | symfile_bfd_open (const char *name) |
c906108c | 1670 | { |
97a41605 | 1671 | int desc = -1; |
c906108c | 1672 | |
e0cc99a6 | 1673 | gdb::unique_xmalloc_ptr<char> absolute_name; |
97a41605 | 1674 | if (!is_target_filename (name)) |
f1838a98 | 1675 | { |
ee0c3293 | 1676 | gdb::unique_xmalloc_ptr<char> expanded_name (tilde_expand (name)); |
c906108c | 1677 | |
97a41605 GB |
1678 | /* Look down path for it, allocate 2nd new malloc'd copy. */ |
1679 | desc = openp (getenv ("PATH"), | |
1680 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
ee0c3293 | 1681 | expanded_name.get (), O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1682 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
97a41605 GB |
1683 | if (desc < 0) |
1684 | { | |
ee0c3293 | 1685 | char *exename = (char *) alloca (strlen (expanded_name.get ()) + 5); |
433759f7 | 1686 | |
ee0c3293 | 1687 | strcat (strcpy (exename, expanded_name.get ()), ".exe"); |
97a41605 GB |
1688 | desc = openp (getenv ("PATH"), |
1689 | OPF_TRY_CWD_FIRST | OPF_RETURN_REALPATH, | |
1690 | exename, O_RDONLY | O_BINARY, &absolute_name); | |
1691 | } | |
c906108c | 1692 | #endif |
97a41605 | 1693 | if (desc < 0) |
ee0c3293 | 1694 | perror_with_name (expanded_name.get ()); |
cb2f3a29 | 1695 | |
e0cc99a6 | 1696 | name = absolute_name.get (); |
97a41605 | 1697 | } |
c906108c | 1698 | |
192b62ce TT |
1699 | gdb_bfd_ref_ptr sym_bfd (gdb_bfd_open (name, gnutarget, desc)); |
1700 | if (sym_bfd == NULL) | |
faab9922 JK |
1701 | error (_("`%s': can't open to read symbols: %s."), name, |
1702 | bfd_errmsg (bfd_get_error ())); | |
97a41605 | 1703 | |
192b62ce TT |
1704 | if (!gdb_bfd_has_target_filename (sym_bfd.get ())) |
1705 | bfd_set_cacheable (sym_bfd.get (), 1); | |
c906108c | 1706 | |
192b62ce TT |
1707 | if (!bfd_check_format (sym_bfd.get (), bfd_object)) |
1708 | error (_("`%s': can't read symbols: %s."), name, | |
1709 | bfd_errmsg (bfd_get_error ())); | |
cb2f3a29 MK |
1710 | |
1711 | return sym_bfd; | |
c906108c SS |
1712 | } |
1713 | ||
cb2f3a29 MK |
1714 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1715 | the section was not found. */ | |
1716 | ||
0e931cf0 | 1717 | int |
a121b7c1 | 1718 | get_section_index (struct objfile *objfile, const char *section_name) |
0e931cf0 JB |
1719 | { |
1720 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1721 | |
0e931cf0 JB |
1722 | if (sect) |
1723 | return sect->index; | |
1724 | else | |
1725 | return -1; | |
1726 | } | |
1727 | ||
c256e171 DE |
1728 | /* Link SF into the global symtab_fns list. |
1729 | FLAVOUR is the file format that SF handles. | |
1730 | Called on startup by the _initialize routine in each object file format | |
1731 | reader, to register information about each format the reader is prepared | |
1732 | to handle. */ | |
c906108c SS |
1733 | |
1734 | void | |
c256e171 | 1735 | add_symtab_fns (enum bfd_flavour flavour, const struct sym_fns *sf) |
c906108c | 1736 | { |
905014d7 | 1737 | symtab_fns.emplace_back (flavour, sf); |
c906108c SS |
1738 | } |
1739 | ||
cb2f3a29 MK |
1740 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1741 | either returns or calls error(). The result is an initialized | |
1742 | struct sym_fns in the objfile structure, that contains cached | |
1743 | information about the symbol file. */ | |
c906108c | 1744 | |
00b5771c | 1745 | static const struct sym_fns * |
31d99776 | 1746 | find_sym_fns (bfd *abfd) |
c906108c | 1747 | { |
31d99776 | 1748 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1749 | |
75245b24 MS |
1750 | if (our_flavour == bfd_target_srec_flavour |
1751 | || our_flavour == bfd_target_ihex_flavour | |
1752 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1753 | return NULL; /* No symbols. */ |
75245b24 | 1754 | |
905014d7 SM |
1755 | for (const registered_sym_fns &rsf : symtab_fns) |
1756 | if (our_flavour == rsf.sym_flavour) | |
1757 | return rsf.sym_fns; | |
cb2f3a29 | 1758 | |
8a3fe4f8 | 1759 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1760 | bfd_get_target (abfd)); |
c906108c SS |
1761 | } |
1762 | \f | |
cb2f3a29 | 1763 | |
c906108c SS |
1764 | /* This function runs the load command of our current target. */ |
1765 | ||
1766 | static void | |
5fed81ff | 1767 | load_command (const char *arg, int from_tty) |
c906108c | 1768 | { |
e5cc9f32 JB |
1769 | dont_repeat (); |
1770 | ||
4487aabf PA |
1771 | /* The user might be reloading because the binary has changed. Take |
1772 | this opportunity to check. */ | |
1773 | reopen_exec_file (); | |
1774 | reread_symbols (); | |
1775 | ||
b577b6af | 1776 | std::string temp; |
c906108c | 1777 | if (arg == NULL) |
1986bccd | 1778 | { |
b577b6af | 1779 | const char *parg, *prev; |
1986bccd | 1780 | |
b577b6af | 1781 | arg = get_exec_file (1); |
1986bccd | 1782 | |
b577b6af TT |
1783 | /* We may need to quote this string so buildargv can pull it |
1784 | apart. */ | |
1785 | prev = parg = arg; | |
1986bccd AS |
1786 | while ((parg = strpbrk (parg, "\\\"'\t "))) |
1787 | { | |
b577b6af TT |
1788 | temp.append (prev, parg - prev); |
1789 | prev = parg++; | |
1790 | temp.push_back ('\\'); | |
1986bccd | 1791 | } |
b577b6af TT |
1792 | /* If we have not copied anything yet, then we didn't see a |
1793 | character to quote, and we can just leave ARG unchanged. */ | |
1794 | if (!temp.empty ()) | |
1986bccd | 1795 | { |
b577b6af TT |
1796 | temp.append (prev); |
1797 | arg = temp.c_str (); | |
1986bccd AS |
1798 | } |
1799 | } | |
1800 | ||
c906108c | 1801 | target_load (arg, from_tty); |
2889e661 JB |
1802 | |
1803 | /* After re-loading the executable, we don't really know which | |
1804 | overlays are mapped any more. */ | |
1805 | overlay_cache_invalid = 1; | |
c906108c SS |
1806 | } |
1807 | ||
1808 | /* This version of "load" should be usable for any target. Currently | |
1809 | it is just used for remote targets, not inftarg.c or core files, | |
1810 | on the theory that only in that case is it useful. | |
1811 | ||
1812 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1813 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1814 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1815 | performance compares. */ | |
917317f4 | 1816 | |
917317f4 JM |
1817 | static int validate_download = 0; |
1818 | ||
e4f9b4d5 MS |
1819 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1820 | ||
1821 | static void | |
1822 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1823 | { | |
19ba03f4 | 1824 | bfd_size_type *sum = (bfd_size_type *) data; |
e4f9b4d5 | 1825 | |
2c500098 | 1826 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1827 | } |
1828 | ||
a76d924d | 1829 | /* Opaque data for load_progress. */ |
55089490 TT |
1830 | struct load_progress_data |
1831 | { | |
a76d924d | 1832 | /* Cumulative data. */ |
55089490 TT |
1833 | unsigned long write_count = 0; |
1834 | unsigned long data_count = 0; | |
1835 | bfd_size_type total_size = 0; | |
a76d924d DJ |
1836 | }; |
1837 | ||
1838 | /* Opaque data for load_progress for a single section. */ | |
55089490 TT |
1839 | struct load_progress_section_data |
1840 | { | |
1841 | load_progress_section_data (load_progress_data *cumulative_, | |
1842 | const char *section_name_, ULONGEST section_size_, | |
1843 | CORE_ADDR lma_, gdb_byte *buffer_) | |
1844 | : cumulative (cumulative_), section_name (section_name_), | |
1845 | section_size (section_size_), lma (lma_), buffer (buffer_) | |
1846 | {} | |
1847 | ||
a76d924d | 1848 | struct load_progress_data *cumulative; |
cf7a04e8 | 1849 | |
a76d924d | 1850 | /* Per-section data. */ |
cf7a04e8 | 1851 | const char *section_name; |
55089490 | 1852 | ULONGEST section_sent = 0; |
cf7a04e8 DJ |
1853 | ULONGEST section_size; |
1854 | CORE_ADDR lma; | |
1855 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1856 | }; |
1857 | ||
55089490 TT |
1858 | /* Opaque data for load_section_callback. */ |
1859 | struct load_section_data | |
1860 | { | |
1861 | load_section_data (load_progress_data *progress_data_) | |
1862 | : progress_data (progress_data_) | |
1863 | {} | |
1864 | ||
1865 | ~load_section_data () | |
1866 | { | |
1867 | for (auto &&request : requests) | |
1868 | { | |
1869 | xfree (request.data); | |
1870 | delete ((load_progress_section_data *) request.baton); | |
1871 | } | |
1872 | } | |
1873 | ||
1874 | CORE_ADDR load_offset = 0; | |
1875 | struct load_progress_data *progress_data; | |
1876 | std::vector<struct memory_write_request> requests; | |
1877 | }; | |
1878 | ||
a76d924d | 1879 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1880 | |
1881 | static void | |
1882 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1883 | { | |
19ba03f4 SM |
1884 | struct load_progress_section_data *args |
1885 | = (struct load_progress_section_data *) untyped_arg; | |
a76d924d DJ |
1886 | struct load_progress_data *totals; |
1887 | ||
1888 | if (args == NULL) | |
1889 | /* Writing padding data. No easy way to get at the cumulative | |
1890 | stats, so just ignore this. */ | |
1891 | return; | |
1892 | ||
1893 | totals = args->cumulative; | |
1894 | ||
1895 | if (bytes == 0 && args->section_sent == 0) | |
1896 | { | |
1897 | /* The write is just starting. Let the user know we've started | |
1898 | this section. */ | |
112e8700 SM |
1899 | current_uiout->message ("Loading section %s, size %s lma %s\n", |
1900 | args->section_name, | |
1901 | hex_string (args->section_size), | |
1902 | paddress (target_gdbarch (), args->lma)); | |
a76d924d DJ |
1903 | return; |
1904 | } | |
cf7a04e8 DJ |
1905 | |
1906 | if (validate_download) | |
1907 | { | |
1908 | /* Broken memories and broken monitors manifest themselves here | |
1909 | when bring new computers to life. This doubles already slow | |
1910 | downloads. */ | |
1911 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1912 | might add a verify_memory() method to the target vector and | |
1913 | then use that. remote.c could implement that method using | |
1914 | the ``qCRC'' packet. */ | |
0efef640 | 1915 | gdb::byte_vector check (bytes); |
cf7a04e8 | 1916 | |
0efef640 | 1917 | if (target_read_memory (args->lma, check.data (), bytes) != 0) |
5af949e3 | 1918 | error (_("Download verify read failed at %s"), |
f5656ead | 1919 | paddress (target_gdbarch (), args->lma)); |
0efef640 | 1920 | if (memcmp (args->buffer, check.data (), bytes) != 0) |
5af949e3 | 1921 | error (_("Download verify compare failed at %s"), |
f5656ead | 1922 | paddress (target_gdbarch (), args->lma)); |
cf7a04e8 | 1923 | } |
a76d924d | 1924 | totals->data_count += bytes; |
cf7a04e8 DJ |
1925 | args->lma += bytes; |
1926 | args->buffer += bytes; | |
a76d924d | 1927 | totals->write_count += 1; |
cf7a04e8 | 1928 | args->section_sent += bytes; |
522002f9 | 1929 | if (check_quit_flag () |
cf7a04e8 DJ |
1930 | || (deprecated_ui_load_progress_hook != NULL |
1931 | && deprecated_ui_load_progress_hook (args->section_name, | |
1932 | args->section_sent))) | |
1933 | error (_("Canceled the download")); | |
1934 | ||
1935 | if (deprecated_show_load_progress != NULL) | |
1936 | deprecated_show_load_progress (args->section_name, | |
1937 | args->section_sent, | |
1938 | args->section_size, | |
a76d924d DJ |
1939 | totals->data_count, |
1940 | totals->total_size); | |
cf7a04e8 DJ |
1941 | } |
1942 | ||
e4f9b4d5 MS |
1943 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1944 | ||
1945 | static void | |
1946 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1947 | { | |
19ba03f4 | 1948 | struct load_section_data *args = (struct load_section_data *) data; |
cf7a04e8 | 1949 | bfd_size_type size = bfd_get_section_size (asec); |
cf7a04e8 | 1950 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1951 | |
cf7a04e8 DJ |
1952 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1953 | return; | |
e4f9b4d5 | 1954 | |
cf7a04e8 DJ |
1955 | if (size == 0) |
1956 | return; | |
e4f9b4d5 | 1957 | |
55089490 TT |
1958 | ULONGEST begin = bfd_section_lma (abfd, asec) + args->load_offset; |
1959 | ULONGEST end = begin + size; | |
1960 | gdb_byte *buffer = (gdb_byte *) xmalloc (size); | |
cf7a04e8 | 1961 | bfd_get_section_contents (abfd, asec, buffer, 0, size); |
a76d924d | 1962 | |
55089490 TT |
1963 | load_progress_section_data *section_data |
1964 | = new load_progress_section_data (args->progress_data, sect_name, size, | |
1965 | begin, buffer); | |
cf7a04e8 | 1966 | |
55089490 | 1967 | args->requests.emplace_back (begin, end, buffer, section_data); |
e4f9b4d5 MS |
1968 | } |
1969 | ||
dcb07cfa PA |
1970 | static void print_transfer_performance (struct ui_file *stream, |
1971 | unsigned long data_count, | |
1972 | unsigned long write_count, | |
1973 | std::chrono::steady_clock::duration d); | |
1974 | ||
c906108c | 1975 | void |
9cbe5fff | 1976 | generic_load (const char *args, int from_tty) |
c906108c | 1977 | { |
a76d924d | 1978 | struct load_progress_data total_progress; |
55089490 | 1979 | struct load_section_data cbdata (&total_progress); |
79a45e25 | 1980 | struct ui_out *uiout = current_uiout; |
a76d924d | 1981 | |
d1a41061 PP |
1982 | if (args == NULL) |
1983 | error_no_arg (_("file to load")); | |
1986bccd | 1984 | |
773a1edc | 1985 | gdb_argv argv (args); |
1986bccd | 1986 | |
ee0c3293 | 1987 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
1986bccd AS |
1988 | |
1989 | if (argv[1] != NULL) | |
917317f4 | 1990 | { |
f698ca8e | 1991 | const char *endptr; |
ba5f2f8a | 1992 | |
f698ca8e | 1993 | cbdata.load_offset = strtoulst (argv[1], &endptr, 0); |
1986bccd AS |
1994 | |
1995 | /* If the last word was not a valid number then | |
1996 | treat it as a file name with spaces in. */ | |
1997 | if (argv[1] == endptr) | |
1998 | error (_("Invalid download offset:%s."), argv[1]); | |
1999 | ||
2000 | if (argv[2] != NULL) | |
2001 | error (_("Too many parameters.")); | |
917317f4 | 2002 | } |
c906108c | 2003 | |
c378eb4e | 2004 | /* Open the file for loading. */ |
ee0c3293 | 2005 | gdb_bfd_ref_ptr loadfile_bfd (gdb_bfd_open (filename.get (), gnutarget, -1)); |
c906108c | 2006 | if (loadfile_bfd == NULL) |
ee0c3293 | 2007 | perror_with_name (filename.get ()); |
917317f4 | 2008 | |
192b62ce | 2009 | if (!bfd_check_format (loadfile_bfd.get (), bfd_object)) |
c906108c | 2010 | { |
ee0c3293 | 2011 | error (_("\"%s\" is not an object file: %s"), filename.get (), |
c906108c SS |
2012 | bfd_errmsg (bfd_get_error ())); |
2013 | } | |
c5aa993b | 2014 | |
192b62ce | 2015 | bfd_map_over_sections (loadfile_bfd.get (), add_section_size_callback, |
a76d924d DJ |
2016 | (void *) &total_progress.total_size); |
2017 | ||
192b62ce | 2018 | bfd_map_over_sections (loadfile_bfd.get (), load_section_callback, &cbdata); |
c2d11a7d | 2019 | |
dcb07cfa PA |
2020 | using namespace std::chrono; |
2021 | ||
2022 | steady_clock::time_point start_time = steady_clock::now (); | |
c906108c | 2023 | |
a76d924d DJ |
2024 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
2025 | load_progress) != 0) | |
2026 | error (_("Load failed")); | |
c906108c | 2027 | |
dcb07cfa | 2028 | steady_clock::time_point end_time = steady_clock::now (); |
ba5f2f8a | 2029 | |
55089490 | 2030 | CORE_ADDR entry = bfd_get_start_address (loadfile_bfd.get ()); |
8c2b9656 | 2031 | entry = gdbarch_addr_bits_remove (target_gdbarch (), entry); |
112e8700 SM |
2032 | uiout->text ("Start address "); |
2033 | uiout->field_fmt ("address", "%s", paddress (target_gdbarch (), entry)); | |
2034 | uiout->text (", load size "); | |
2035 | uiout->field_fmt ("load-size", "%lu", total_progress.data_count); | |
2036 | uiout->text ("\n"); | |
fb14de7b | 2037 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 2038 | |
38963c97 DJ |
2039 | /* Reset breakpoints, now that we have changed the load image. For |
2040 | instance, breakpoints may have been set (or reset, by | |
2041 | post_create_inferior) while connected to the target but before we | |
2042 | loaded the program. In that case, the prologue analyzer could | |
2043 | have read instructions from the target to find the right | |
2044 | breakpoint locations. Loading has changed the contents of that | |
2045 | memory. */ | |
2046 | ||
2047 | breakpoint_re_set (); | |
2048 | ||
a76d924d DJ |
2049 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
2050 | total_progress.write_count, | |
dcb07cfa | 2051 | end_time - start_time); |
c906108c SS |
2052 | } |
2053 | ||
dcb07cfa PA |
2054 | /* Report on STREAM the performance of a memory transfer operation, |
2055 | such as 'load'. DATA_COUNT is the number of bytes transferred. | |
2056 | WRITE_COUNT is the number of separate write operations, or 0, if | |
2057 | that information is not available. TIME is how long the operation | |
2058 | lasted. */ | |
c906108c | 2059 | |
dcb07cfa | 2060 | static void |
d9fcf2fb | 2061 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2062 | unsigned long data_count, |
2063 | unsigned long write_count, | |
dcb07cfa | 2064 | std::chrono::steady_clock::duration time) |
917317f4 | 2065 | { |
dcb07cfa | 2066 | using namespace std::chrono; |
79a45e25 | 2067 | struct ui_out *uiout = current_uiout; |
2b71414d | 2068 | |
dcb07cfa | 2069 | milliseconds ms = duration_cast<milliseconds> (time); |
2b71414d | 2070 | |
112e8700 | 2071 | uiout->text ("Transfer rate: "); |
dcb07cfa | 2072 | if (ms.count () > 0) |
8b93c638 | 2073 | { |
dcb07cfa | 2074 | unsigned long rate = ((ULONGEST) data_count * 1000) / ms.count (); |
9f43d28c | 2075 | |
112e8700 | 2076 | if (uiout->is_mi_like_p ()) |
9f43d28c | 2077 | { |
112e8700 SM |
2078 | uiout->field_fmt ("transfer-rate", "%lu", rate * 8); |
2079 | uiout->text (" bits/sec"); | |
9f43d28c DJ |
2080 | } |
2081 | else if (rate < 1024) | |
2082 | { | |
112e8700 SM |
2083 | uiout->field_fmt ("transfer-rate", "%lu", rate); |
2084 | uiout->text (" bytes/sec"); | |
9f43d28c DJ |
2085 | } |
2086 | else | |
2087 | { | |
112e8700 SM |
2088 | uiout->field_fmt ("transfer-rate", "%lu", rate / 1024); |
2089 | uiout->text (" KB/sec"); | |
9f43d28c | 2090 | } |
8b93c638 JM |
2091 | } |
2092 | else | |
2093 | { | |
112e8700 SM |
2094 | uiout->field_fmt ("transferred-bits", "%lu", (data_count * 8)); |
2095 | uiout->text (" bits in <1 sec"); | |
8b93c638 JM |
2096 | } |
2097 | if (write_count > 0) | |
2098 | { | |
112e8700 SM |
2099 | uiout->text (", "); |
2100 | uiout->field_fmt ("write-rate", "%lu", data_count / write_count); | |
2101 | uiout->text (" bytes/write"); | |
8b93c638 | 2102 | } |
112e8700 | 2103 | uiout->text (".\n"); |
c906108c SS |
2104 | } |
2105 | ||
291f9a96 PT |
2106 | /* Add an OFFSET to the start address of each section in OBJF, except |
2107 | sections that were specified in ADDRS. */ | |
2108 | ||
2109 | static void | |
2110 | set_objfile_default_section_offset (struct objfile *objf, | |
2111 | const section_addr_info &addrs, | |
2112 | CORE_ADDR offset) | |
2113 | { | |
2114 | /* Add OFFSET to all sections by default. */ | |
2115 | std::vector<struct section_offsets> offsets (objf->num_sections, | |
027a4c30 | 2116 | { { offset } }); |
291f9a96 PT |
2117 | |
2118 | /* Create sorted lists of all sections in ADDRS as well as all | |
2119 | sections in OBJF. */ | |
2120 | ||
2121 | std::vector<const struct other_sections *> addrs_sorted | |
2122 | = addrs_section_sort (addrs); | |
2123 | ||
2124 | section_addr_info objf_addrs | |
2125 | = build_section_addr_info_from_objfile (objf); | |
2126 | std::vector<const struct other_sections *> objf_addrs_sorted | |
2127 | = addrs_section_sort (objf_addrs); | |
2128 | ||
2129 | /* Walk the BFD section list, and if a matching section is found in | |
2130 | ADDRS_SORTED_LIST, set its offset to zero to keep its address | |
2131 | unchanged. | |
2132 | ||
2133 | Note that both lists may contain multiple sections with the same | |
2134 | name, and then the sections from ADDRS are matched in BFD order | |
2135 | (thanks to sectindex). */ | |
2136 | ||
2137 | std::vector<const struct other_sections *>::iterator addrs_sorted_iter | |
2138 | = addrs_sorted.begin (); | |
ff27d073 | 2139 | for (const other_sections *objf_sect : objf_addrs_sorted) |
291f9a96 PT |
2140 | { |
2141 | const char *objf_name = addr_section_name (objf_sect->name.c_str ()); | |
2142 | int cmp = -1; | |
2143 | ||
2144 | while (cmp < 0 && addrs_sorted_iter != addrs_sorted.end ()) | |
2145 | { | |
2146 | const struct other_sections *sect = *addrs_sorted_iter; | |
2147 | const char *sect_name = addr_section_name (sect->name.c_str ()); | |
2148 | cmp = strcmp (sect_name, objf_name); | |
2149 | if (cmp <= 0) | |
2150 | ++addrs_sorted_iter; | |
2151 | } | |
2152 | ||
2153 | if (cmp == 0) | |
2154 | offsets[objf_sect->sectindex].offsets[0] = 0; | |
2155 | } | |
2156 | ||
2157 | /* Apply the new section offsets. */ | |
2158 | objfile_relocate (objf, offsets.data ()); | |
2159 | } | |
2160 | ||
c906108c SS |
2161 | /* This function allows the addition of incrementally linked object files. |
2162 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2163 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2164 | special case syntax for the rombug target (Rombug is the boot | |
2165 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2166 | rombug case, the user doesn't need to supply a text address, | |
2167 | instead a call to target_link() (in target.c) would supply the | |
c378eb4e | 2168 | value to use. We are now discontinuing this type of ad hoc syntax. */ |
c906108c | 2169 | |
c906108c | 2170 | static void |
2cf311eb | 2171 | add_symbol_file_command (const char *args, int from_tty) |
c906108c | 2172 | { |
5af949e3 | 2173 | struct gdbarch *gdbarch = get_current_arch (); |
ee0c3293 | 2174 | gdb::unique_xmalloc_ptr<char> filename; |
c906108c | 2175 | char *arg; |
2acceee2 | 2176 | int argcnt = 0; |
76ad5e1e | 2177 | struct objfile *objf; |
b15cc25c PA |
2178 | objfile_flags flags = OBJF_USERLOADED | OBJF_SHARED; |
2179 | symfile_add_flags add_flags = 0; | |
2180 | ||
2181 | if (from_tty) | |
2182 | add_flags |= SYMFILE_VERBOSE; | |
db162d44 | 2183 | |
a39a16c4 | 2184 | struct sect_opt |
2acceee2 | 2185 | { |
a121b7c1 PA |
2186 | const char *name; |
2187 | const char *value; | |
a39a16c4 | 2188 | }; |
db162d44 | 2189 | |
40fc416f SDJ |
2190 | std::vector<sect_opt> sect_opts = { { ".text", NULL } }; |
2191 | bool stop_processing_options = false; | |
291f9a96 | 2192 | CORE_ADDR offset = 0; |
c5aa993b | 2193 | |
c906108c SS |
2194 | dont_repeat (); |
2195 | ||
2196 | if (args == NULL) | |
8a3fe4f8 | 2197 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2198 | |
40fc416f | 2199 | bool seen_addr = false; |
291f9a96 | 2200 | bool seen_offset = false; |
773a1edc | 2201 | gdb_argv argv (args); |
db162d44 | 2202 | |
5b96932b AS |
2203 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2204 | { | |
40fc416f | 2205 | if (stop_processing_options || *arg != '-') |
41dc8db8 | 2206 | { |
40fc416f | 2207 | if (filename == NULL) |
41dc8db8 | 2208 | { |
40fc416f SDJ |
2209 | /* First non-option argument is always the filename. */ |
2210 | filename.reset (tilde_expand (arg)); | |
41dc8db8 | 2211 | } |
40fc416f | 2212 | else if (!seen_addr) |
41dc8db8 | 2213 | { |
40fc416f SDJ |
2214 | /* The second non-option argument is always the text |
2215 | address at which to load the program. */ | |
2216 | sect_opts[0].value = arg; | |
2217 | seen_addr = true; | |
41dc8db8 MB |
2218 | } |
2219 | else | |
02ca603a | 2220 | error (_("Unrecognized argument \"%s\""), arg); |
41dc8db8 | 2221 | } |
40fc416f SDJ |
2222 | else if (strcmp (arg, "-readnow") == 0) |
2223 | flags |= OBJF_READNOW; | |
97cbe998 SDJ |
2224 | else if (strcmp (arg, "-readnever") == 0) |
2225 | flags |= OBJF_READNEVER; | |
40fc416f SDJ |
2226 | else if (strcmp (arg, "-s") == 0) |
2227 | { | |
2228 | if (argv[argcnt + 1] == NULL) | |
2229 | error (_("Missing section name after \"-s\"")); | |
2230 | else if (argv[argcnt + 2] == NULL) | |
2231 | error (_("Missing section address after \"-s\"")); | |
2232 | ||
2233 | sect_opt sect = { argv[argcnt + 1], argv[argcnt + 2] }; | |
2234 | ||
2235 | sect_opts.push_back (sect); | |
2236 | argcnt += 2; | |
2237 | } | |
291f9a96 PT |
2238 | else if (strcmp (arg, "-o") == 0) |
2239 | { | |
2240 | arg = argv[++argcnt]; | |
2241 | if (arg == NULL) | |
2242 | error (_("Missing argument to -o")); | |
2243 | ||
2244 | offset = parse_and_eval_address (arg); | |
2245 | seen_offset = true; | |
2246 | } | |
40fc416f SDJ |
2247 | else if (strcmp (arg, "--") == 0) |
2248 | stop_processing_options = true; | |
2249 | else | |
2250 | error (_("Unrecognized argument \"%s\""), arg); | |
c906108c | 2251 | } |
c906108c | 2252 | |
40fc416f SDJ |
2253 | if (filename == NULL) |
2254 | error (_("You must provide a filename to be loaded.")); | |
2255 | ||
97cbe998 SDJ |
2256 | validate_readnow_readnever (flags); |
2257 | ||
c378eb4e | 2258 | /* Print the prompt for the query below. And save the arguments into |
db162d44 EZ |
2259 | a sect_addr_info structure to be passed around to other |
2260 | functions. We have to split this up into separate print | |
bb599908 | 2261 | statements because hex_string returns a local static |
c378eb4e | 2262 | string. */ |
5417f6dc | 2263 | |
ed6dfe51 | 2264 | printf_unfiltered (_("add symbol table from file \"%s\""), |
ee0c3293 | 2265 | filename.get ()); |
37e136b1 | 2266 | section_addr_info section_addrs; |
ed6dfe51 PT |
2267 | std::vector<sect_opt>::const_iterator it = sect_opts.begin (); |
2268 | if (!seen_addr) | |
2269 | ++it; | |
2270 | for (; it != sect_opts.end (); ++it) | |
c906108c | 2271 | { |
db162d44 | 2272 | CORE_ADDR addr; |
ed6dfe51 PT |
2273 | const char *val = it->value; |
2274 | const char *sec = it->name; | |
5417f6dc | 2275 | |
ed6dfe51 PT |
2276 | if (section_addrs.empty ()) |
2277 | printf_unfiltered (_(" at\n")); | |
ae822768 | 2278 | addr = parse_and_eval_address (val); |
db162d44 | 2279 | |
db162d44 | 2280 | /* Here we store the section offsets in the order they were |
d81a3eaf PT |
2281 | entered on the command line. Every array element is |
2282 | assigned an ascending section index to preserve the above | |
2283 | order over an unstable sorting algorithm. This dummy | |
2284 | index is not used for any other purpose. | |
2285 | */ | |
2286 | section_addrs.emplace_back (addr, sec, section_addrs.size ()); | |
22068491 TT |
2287 | printf_filtered ("\t%s_addr = %s\n", sec, |
2288 | paddress (gdbarch, addr)); | |
db162d44 | 2289 | |
5417f6dc | 2290 | /* The object's sections are initialized when a |
db162d44 | 2291 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2292 | This happens in reread_symbols. |
db162d44 EZ |
2293 | At this point, we don't know what file type this is, |
2294 | so we can't determine what section names are valid. */ | |
2acceee2 | 2295 | } |
291f9a96 PT |
2296 | if (seen_offset) |
2297 | printf_unfiltered (_("%s offset by %s\n"), | |
2298 | (section_addrs.empty () | |
2299 | ? _(" with all sections") | |
2300 | : _("with other sections")), | |
2301 | paddress (gdbarch, offset)); | |
2302 | else if (section_addrs.empty ()) | |
ed6dfe51 | 2303 | printf_unfiltered ("\n"); |
db162d44 | 2304 | |
2acceee2 | 2305 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2306 | error (_("Not confirmed.")); |
c906108c | 2307 | |
37e136b1 TT |
2308 | objf = symbol_file_add (filename.get (), add_flags, §ion_addrs, |
2309 | flags); | |
76ad5e1e | 2310 | |
291f9a96 PT |
2311 | if (seen_offset) |
2312 | set_objfile_default_section_offset (objf, section_addrs, offset); | |
2313 | ||
76ad5e1e | 2314 | add_target_sections_of_objfile (objf); |
c906108c SS |
2315 | |
2316 | /* Getting new symbols may change our opinion about what is | |
2317 | frameless. */ | |
2318 | reinit_frame_cache (); | |
2319 | } | |
2320 | \f | |
70992597 | 2321 | |
63644780 NB |
2322 | /* This function removes a symbol file that was added via add-symbol-file. */ |
2323 | ||
2324 | static void | |
2cf311eb | 2325 | remove_symbol_file_command (const char *args, int from_tty) |
63644780 | 2326 | { |
63644780 | 2327 | struct objfile *objf = NULL; |
63644780 | 2328 | struct program_space *pspace = current_program_space; |
63644780 NB |
2329 | |
2330 | dont_repeat (); | |
2331 | ||
2332 | if (args == NULL) | |
2333 | error (_("remove-symbol-file: no symbol file provided")); | |
2334 | ||
773a1edc | 2335 | gdb_argv argv (args); |
63644780 NB |
2336 | |
2337 | if (strcmp (argv[0], "-a") == 0) | |
2338 | { | |
2339 | /* Interpret the next argument as an address. */ | |
2340 | CORE_ADDR addr; | |
2341 | ||
2342 | if (argv[1] == NULL) | |
2343 | error (_("Missing address argument")); | |
2344 | ||
2345 | if (argv[2] != NULL) | |
2346 | error (_("Junk after %s"), argv[1]); | |
2347 | ||
2348 | addr = parse_and_eval_address (argv[1]); | |
2349 | ||
2350 | ALL_OBJFILES (objf) | |
2351 | { | |
d03de421 PA |
2352 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2353 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 NB |
2354 | && objf->pspace == pspace && is_addr_in_objfile (addr, objf)) |
2355 | break; | |
2356 | } | |
2357 | } | |
2358 | else if (argv[0] != NULL) | |
2359 | { | |
2360 | /* Interpret the current argument as a file name. */ | |
63644780 NB |
2361 | |
2362 | if (argv[1] != NULL) | |
2363 | error (_("Junk after %s"), argv[0]); | |
2364 | ||
ee0c3293 | 2365 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (argv[0])); |
63644780 NB |
2366 | |
2367 | ALL_OBJFILES (objf) | |
2368 | { | |
d03de421 PA |
2369 | if ((objf->flags & OBJF_USERLOADED) != 0 |
2370 | && (objf->flags & OBJF_SHARED) != 0 | |
63644780 | 2371 | && objf->pspace == pspace |
ee0c3293 | 2372 | && filename_cmp (filename.get (), objfile_name (objf)) == 0) |
63644780 NB |
2373 | break; |
2374 | } | |
2375 | } | |
2376 | ||
2377 | if (objf == NULL) | |
2378 | error (_("No symbol file found")); | |
2379 | ||
2380 | if (from_tty | |
2381 | && !query (_("Remove symbol table from file \"%s\"? "), | |
2382 | objfile_name (objf))) | |
2383 | error (_("Not confirmed.")); | |
2384 | ||
9e86da07 | 2385 | delete objf; |
63644780 | 2386 | clear_symtab_users (0); |
63644780 NB |
2387 | } |
2388 | ||
c906108c | 2389 | /* Re-read symbols if a symbol-file has changed. */ |
3b7bacac | 2390 | |
c906108c | 2391 | void |
fba45db2 | 2392 | reread_symbols (void) |
c906108c SS |
2393 | { |
2394 | struct objfile *objfile; | |
2395 | long new_modtime; | |
c906108c SS |
2396 | struct stat new_statbuf; |
2397 | int res; | |
4c404b8b | 2398 | std::vector<struct objfile *> new_objfiles; |
c906108c SS |
2399 | |
2400 | /* With the addition of shared libraries, this should be modified, | |
2401 | the load time should be saved in the partial symbol tables, since | |
2402 | different tables may come from different source files. FIXME. | |
2403 | This routine should then walk down each partial symbol table | |
c378eb4e | 2404 | and see if the symbol table that it originates from has been changed. */ |
c906108c | 2405 | |
c5aa993b JM |
2406 | for (objfile = object_files; objfile; objfile = objfile->next) |
2407 | { | |
9cce227f TG |
2408 | if (objfile->obfd == NULL) |
2409 | continue; | |
2410 | ||
2411 | /* Separate debug objfiles are handled in the main objfile. */ | |
2412 | if (objfile->separate_debug_objfile_backlink) | |
2413 | continue; | |
2414 | ||
02aeec7b JB |
2415 | /* If this object is from an archive (what you usually create with |
2416 | `ar', often called a `static library' on most systems, though | |
2417 | a `shared library' on AIX is also an archive), then you should | |
2418 | stat on the archive name, not member name. */ | |
9cce227f TG |
2419 | if (objfile->obfd->my_archive) |
2420 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2421 | else | |
4262abfb | 2422 | res = stat (objfile_name (objfile), &new_statbuf); |
9cce227f TG |
2423 | if (res != 0) |
2424 | { | |
c378eb4e | 2425 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
22068491 TT |
2426 | printf_filtered (_("`%s' has disappeared; keeping its symbols.\n"), |
2427 | objfile_name (objfile)); | |
9cce227f TG |
2428 | continue; |
2429 | } | |
2430 | new_modtime = new_statbuf.st_mtime; | |
2431 | if (new_modtime != objfile->mtime) | |
2432 | { | |
2433 | struct cleanup *old_cleanups; | |
2434 | struct section_offsets *offsets; | |
2435 | int num_offsets; | |
9cce227f | 2436 | |
22068491 TT |
2437 | printf_filtered (_("`%s' has changed; re-reading symbols.\n"), |
2438 | objfile_name (objfile)); | |
9cce227f TG |
2439 | |
2440 | /* There are various functions like symbol_file_add, | |
2441 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2442 | appear to do what we want. But they have various other | |
2443 | effects which we *don't* want. So we just do stuff | |
2444 | ourselves. We don't worry about mapped files (for one thing, | |
2445 | any mapped file will be out of date). */ | |
2446 | ||
2447 | /* If we get an error, blow away this objfile (not sure if | |
2448 | that is the correct response for things like shared | |
2449 | libraries). */ | |
ed2b3126 TT |
2450 | std::unique_ptr<struct objfile> objfile_holder (objfile); |
2451 | ||
9cce227f | 2452 | /* We need to do this whenever any symbols go away. */ |
ed2b3126 | 2453 | old_cleanups = make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
9cce227f | 2454 | |
0ba1096a KT |
2455 | if (exec_bfd != NULL |
2456 | && filename_cmp (bfd_get_filename (objfile->obfd), | |
2457 | bfd_get_filename (exec_bfd)) == 0) | |
9cce227f TG |
2458 | { |
2459 | /* Reload EXEC_BFD without asking anything. */ | |
2460 | ||
2461 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2462 | } | |
2463 | ||
f6eeced0 JK |
2464 | /* Keep the calls order approx. the same as in free_objfile. */ |
2465 | ||
2466 | /* Free the separate debug objfiles. It will be | |
2467 | automatically recreated by sym_read. */ | |
2468 | free_objfile_separate_debug (objfile); | |
2469 | ||
2470 | /* Remove any references to this objfile in the global | |
2471 | value lists. */ | |
2472 | preserve_values (objfile); | |
2473 | ||
2474 | /* Nuke all the state that we will re-read. Much of the following | |
2475 | code which sets things to NULL really is necessary to tell | |
2476 | other parts of GDB that there is nothing currently there. | |
2477 | ||
2478 | Try to keep the freeing order compatible with free_objfile. */ | |
2479 | ||
2480 | if (objfile->sf != NULL) | |
2481 | { | |
2482 | (*objfile->sf->sym_finish) (objfile); | |
2483 | } | |
2484 | ||
2485 | clear_objfile_data (objfile); | |
2486 | ||
e1507e95 | 2487 | /* Clean up any state BFD has sitting around. */ |
a4453b7e | 2488 | { |
192b62ce | 2489 | gdb_bfd_ref_ptr obfd (objfile->obfd); |
d3846e71 | 2490 | char *obfd_filename; |
a4453b7e TT |
2491 | |
2492 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2493 | /* Open the new BFD before freeing the old one, so that | |
2494 | the filename remains live. */ | |
192b62ce TT |
2495 | gdb_bfd_ref_ptr temp (gdb_bfd_open (obfd_filename, gnutarget, -1)); |
2496 | objfile->obfd = temp.release (); | |
e1507e95 | 2497 | if (objfile->obfd == NULL) |
192b62ce | 2498 | error (_("Can't open %s to read symbols."), obfd_filename); |
a4453b7e TT |
2499 | } |
2500 | ||
c0c9f665 | 2501 | std::string original_name = objfile->original_name; |
24ba069a | 2502 | |
9cce227f TG |
2503 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2504 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
4262abfb | 2505 | error (_("Can't read symbols from %s: %s."), objfile_name (objfile), |
9cce227f TG |
2506 | bfd_errmsg (bfd_get_error ())); |
2507 | ||
2508 | /* Save the offsets, we will nuke them with the rest of the | |
2509 | objfile_obstack. */ | |
2510 | num_offsets = objfile->num_sections; | |
2511 | offsets = ((struct section_offsets *) | |
2512 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2513 | memcpy (offsets, objfile->section_offsets, | |
2514 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2515 | ||
9cce227f TG |
2516 | /* FIXME: Do we have to free a whole linked list, or is this |
2517 | enough? */ | |
af5bf4ad SM |
2518 | objfile->global_psymbols.clear (); |
2519 | objfile->static_psymbols.clear (); | |
9cce227f | 2520 | |
c378eb4e | 2521 | /* Free the obstacks for non-reusable objfiles. */ |
710e1a31 SW |
2522 | psymbol_bcache_free (objfile->psymbol_cache); |
2523 | objfile->psymbol_cache = psymbol_bcache_init (); | |
41664b45 DG |
2524 | |
2525 | /* NB: after this call to obstack_free, objfiles_changed | |
2526 | will need to be called (see discussion below). */ | |
9cce227f TG |
2527 | obstack_free (&objfile->objfile_obstack, 0); |
2528 | objfile->sections = NULL; | |
43f3e411 | 2529 | objfile->compunit_symtabs = NULL; |
9cce227f TG |
2530 | objfile->psymtabs = NULL; |
2531 | objfile->psymtabs_addrmap = NULL; | |
2532 | objfile->free_psymtabs = NULL; | |
34eaf542 | 2533 | objfile->template_symbols = NULL; |
22ad8107 | 2534 | objfile->static_links = NULL; |
9cce227f | 2535 | |
9cce227f TG |
2536 | /* obstack_init also initializes the obstack so it is |
2537 | empty. We could use obstack_specify_allocation but | |
d82ea6a8 | 2538 | gdb_obstack.h specifies the alloc/dealloc functions. */ |
9cce227f | 2539 | obstack_init (&objfile->objfile_obstack); |
779bd270 | 2540 | |
846060df JB |
2541 | /* set_objfile_per_bfd potentially allocates the per-bfd |
2542 | data on the objfile's obstack (if sharing data across | |
2543 | multiple users is not possible), so it's important to | |
2544 | do it *after* the obstack has been initialized. */ | |
2545 | set_objfile_per_bfd (objfile); | |
2546 | ||
224c3ddb | 2547 | objfile->original_name |
c0c9f665 TT |
2548 | = (char *) obstack_copy0 (&objfile->objfile_obstack, |
2549 | original_name.c_str (), | |
2550 | original_name.size ()); | |
24ba069a | 2551 | |
779bd270 DE |
2552 | /* Reset the sym_fns pointer. The ELF reader can change it |
2553 | based on whether .gdb_index is present, and we need it to | |
2554 | start over. PR symtab/15885 */ | |
8fb8eb5c | 2555 | objfile_set_sym_fns (objfile, find_sym_fns (objfile->obfd)); |
779bd270 | 2556 | |
d82ea6a8 | 2557 | build_objfile_section_table (objfile); |
9cce227f TG |
2558 | terminate_minimal_symbol_table (objfile); |
2559 | ||
2560 | /* We use the same section offsets as from last time. I'm not | |
2561 | sure whether that is always correct for shared libraries. */ | |
2562 | objfile->section_offsets = (struct section_offsets *) | |
2563 | obstack_alloc (&objfile->objfile_obstack, | |
2564 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2565 | memcpy (objfile->section_offsets, offsets, | |
2566 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2567 | objfile->num_sections = num_offsets; | |
2568 | ||
2569 | /* What the hell is sym_new_init for, anyway? The concept of | |
2570 | distinguishing between the main file and additional files | |
2571 | in this way seems rather dubious. */ | |
2572 | if (objfile == symfile_objfile) | |
c906108c | 2573 | { |
9cce227f | 2574 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2575 | } |
9cce227f TG |
2576 | |
2577 | (*objfile->sf->sym_init) (objfile); | |
5ca8c39f | 2578 | clear_complaints (); |
608e2dbb TT |
2579 | |
2580 | objfile->flags &= ~OBJF_PSYMTABS_READ; | |
41664b45 DG |
2581 | |
2582 | /* We are about to read new symbols and potentially also | |
2583 | DWARF information. Some targets may want to pass addresses | |
2584 | read from DWARF DIE's through an adjustment function before | |
2585 | saving them, like MIPS, which may call into | |
2586 | "find_pc_section". When called, that function will make | |
2587 | use of per-objfile program space data. | |
2588 | ||
2589 | Since we discarded our section information above, we have | |
2590 | dangling pointers in the per-objfile program space data | |
2591 | structure. Force GDB to update the section mapping | |
2592 | information by letting it know the objfile has changed, | |
2593 | making the dangling pointers point to correct data | |
2594 | again. */ | |
2595 | ||
2596 | objfiles_changed (); | |
2597 | ||
608e2dbb | 2598 | read_symbols (objfile, 0); |
b11896a5 | 2599 | |
9cce227f | 2600 | if (!objfile_has_symbols (objfile)) |
c906108c | 2601 | { |
9cce227f | 2602 | wrap_here (""); |
22068491 | 2603 | printf_filtered (_("(no debugging symbols found)\n")); |
9cce227f | 2604 | wrap_here (""); |
c5aa993b | 2605 | } |
9cce227f TG |
2606 | |
2607 | /* We're done reading the symbol file; finish off complaints. */ | |
5ca8c39f | 2608 | clear_complaints (); |
9cce227f TG |
2609 | |
2610 | /* Getting new symbols may change our opinion about what is | |
2611 | frameless. */ | |
2612 | ||
2613 | reinit_frame_cache (); | |
2614 | ||
2615 | /* Discard cleanups as symbol reading was successful. */ | |
ed2b3126 | 2616 | objfile_holder.release (); |
9cce227f TG |
2617 | discard_cleanups (old_cleanups); |
2618 | ||
2619 | /* If the mtime has changed between the time we set new_modtime | |
2620 | and now, we *want* this to be out of date, so don't call stat | |
2621 | again now. */ | |
2622 | objfile->mtime = new_modtime; | |
9cce227f | 2623 | init_entry_point_info (objfile); |
4ac39b97 | 2624 | |
4c404b8b | 2625 | new_objfiles.push_back (objfile); |
c906108c SS |
2626 | } |
2627 | } | |
c906108c | 2628 | |
4c404b8b | 2629 | if (!new_objfiles.empty ()) |
ea53e89f | 2630 | { |
c1e56572 | 2631 | clear_symtab_users (0); |
4ac39b97 JK |
2632 | |
2633 | /* clear_objfile_data for each objfile was called before freeing it and | |
76727919 | 2634 | gdb::observers::new_objfile.notify (NULL) has been called by |
4ac39b97 | 2635 | clear_symtab_users above. Notify the new files now. */ |
4c404b8b | 2636 | for (auto iter : new_objfiles) |
c486b610 | 2637 | gdb::observers::new_objfile.notify (iter); |
4ac39b97 | 2638 | |
ea53e89f JB |
2639 | /* At least one objfile has changed, so we can consider that |
2640 | the executable we're debugging has changed too. */ | |
76727919 | 2641 | gdb::observers::executable_changed.notify (); |
ea53e89f | 2642 | } |
c906108c | 2643 | } |
c906108c SS |
2644 | \f |
2645 | ||
593e3209 | 2646 | struct filename_language |
c5aa993b | 2647 | { |
593e3209 SM |
2648 | filename_language (const std::string &ext_, enum language lang_) |
2649 | : ext (ext_), lang (lang_) | |
2650 | {} | |
3fcf0b0d | 2651 | |
593e3209 SM |
2652 | std::string ext; |
2653 | enum language lang; | |
2654 | }; | |
c906108c | 2655 | |
593e3209 | 2656 | static std::vector<filename_language> filename_language_table; |
c906108c | 2657 | |
56618e20 TT |
2658 | /* See symfile.h. */ |
2659 | ||
2660 | void | |
2661 | add_filename_language (const char *ext, enum language lang) | |
c906108c | 2662 | { |
593e3209 | 2663 | filename_language_table.emplace_back (ext, lang); |
c906108c SS |
2664 | } |
2665 | ||
2666 | static char *ext_args; | |
920d2a44 AC |
2667 | static void |
2668 | show_ext_args (struct ui_file *file, int from_tty, | |
2669 | struct cmd_list_element *c, const char *value) | |
2670 | { | |
3e43a32a MS |
2671 | fprintf_filtered (file, |
2672 | _("Mapping between filename extension " | |
2673 | "and source language is \"%s\".\n"), | |
920d2a44 AC |
2674 | value); |
2675 | } | |
c906108c SS |
2676 | |
2677 | static void | |
eb4c3f4a TT |
2678 | set_ext_lang_command (const char *args, |
2679 | int from_tty, struct cmd_list_element *e) | |
c906108c | 2680 | { |
c906108c SS |
2681 | char *cp = ext_args; |
2682 | enum language lang; | |
2683 | ||
c378eb4e | 2684 | /* First arg is filename extension, starting with '.' */ |
c906108c | 2685 | if (*cp != '.') |
8a3fe4f8 | 2686 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2687 | |
2688 | /* Find end of first arg. */ | |
c5aa993b | 2689 | while (*cp && !isspace (*cp)) |
c906108c SS |
2690 | cp++; |
2691 | ||
2692 | if (*cp == '\0') | |
3e43a32a MS |
2693 | error (_("'%s': two arguments required -- " |
2694 | "filename extension and language"), | |
c906108c SS |
2695 | ext_args); |
2696 | ||
c378eb4e | 2697 | /* Null-terminate first arg. */ |
c5aa993b | 2698 | *cp++ = '\0'; |
c906108c SS |
2699 | |
2700 | /* Find beginning of second arg, which should be a source language. */ | |
529480d0 | 2701 | cp = skip_spaces (cp); |
c906108c SS |
2702 | |
2703 | if (*cp == '\0') | |
3e43a32a MS |
2704 | error (_("'%s': two arguments required -- " |
2705 | "filename extension and language"), | |
c906108c SS |
2706 | ext_args); |
2707 | ||
2708 | /* Lookup the language from among those we know. */ | |
2709 | lang = language_enum (cp); | |
2710 | ||
593e3209 | 2711 | auto it = filename_language_table.begin (); |
c906108c | 2712 | /* Now lookup the filename extension: do we already know it? */ |
593e3209 | 2713 | for (; it != filename_language_table.end (); it++) |
3fcf0b0d | 2714 | { |
593e3209 | 2715 | if (it->ext == ext_args) |
3fcf0b0d TT |
2716 | break; |
2717 | } | |
c906108c | 2718 | |
593e3209 | 2719 | if (it == filename_language_table.end ()) |
c906108c | 2720 | { |
c378eb4e | 2721 | /* New file extension. */ |
c906108c SS |
2722 | add_filename_language (ext_args, lang); |
2723 | } | |
2724 | else | |
2725 | { | |
c378eb4e | 2726 | /* Redefining a previously known filename extension. */ |
c906108c SS |
2727 | |
2728 | /* if (from_tty) */ | |
2729 | /* query ("Really make files of type %s '%s'?", */ | |
2730 | /* ext_args, language_str (lang)); */ | |
2731 | ||
593e3209 | 2732 | it->lang = lang; |
c906108c SS |
2733 | } |
2734 | } | |
2735 | ||
2736 | static void | |
1d12d88f | 2737 | info_ext_lang_command (const char *args, int from_tty) |
c906108c | 2738 | { |
a3f17187 | 2739 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c | 2740 | printf_filtered ("\n\n"); |
593e3209 SM |
2741 | for (const filename_language &entry : filename_language_table) |
2742 | printf_filtered ("\t%s\t- %s\n", entry.ext.c_str (), | |
2743 | language_str (entry.lang)); | |
c906108c SS |
2744 | } |
2745 | ||
c906108c | 2746 | enum language |
dd786858 | 2747 | deduce_language_from_filename (const char *filename) |
c906108c | 2748 | { |
e6a959d6 | 2749 | const char *cp; |
c906108c SS |
2750 | |
2751 | if (filename != NULL) | |
2752 | if ((cp = strrchr (filename, '.')) != NULL) | |
3fcf0b0d | 2753 | { |
593e3209 SM |
2754 | for (const filename_language &entry : filename_language_table) |
2755 | if (entry.ext == cp) | |
2756 | return entry.lang; | |
3fcf0b0d | 2757 | } |
c906108c SS |
2758 | |
2759 | return language_unknown; | |
2760 | } | |
2761 | \f | |
43f3e411 DE |
2762 | /* Allocate and initialize a new symbol table. |
2763 | CUST is from the result of allocate_compunit_symtab. */ | |
c906108c SS |
2764 | |
2765 | struct symtab * | |
43f3e411 | 2766 | allocate_symtab (struct compunit_symtab *cust, const char *filename) |
c906108c | 2767 | { |
43f3e411 DE |
2768 | struct objfile *objfile = cust->objfile; |
2769 | struct symtab *symtab | |
2770 | = OBSTACK_ZALLOC (&objfile->objfile_obstack, struct symtab); | |
c906108c | 2771 | |
19ba03f4 SM |
2772 | symtab->filename |
2773 | = (const char *) bcache (filename, strlen (filename) + 1, | |
21ea9eec | 2774 | objfile->per_bfd->filename_cache); |
c5aa993b JM |
2775 | symtab->fullname = NULL; |
2776 | symtab->language = deduce_language_from_filename (filename); | |
c906108c | 2777 | |
db0fec5c DE |
2778 | /* This can be very verbose with lots of headers. |
2779 | Only print at higher debug levels. */ | |
2780 | if (symtab_create_debug >= 2) | |
45cfd468 DE |
2781 | { |
2782 | /* Be a bit clever with debugging messages, and don't print objfile | |
2783 | every time, only when it changes. */ | |
2784 | static char *last_objfile_name = NULL; | |
2785 | ||
2786 | if (last_objfile_name == NULL | |
4262abfb | 2787 | || strcmp (last_objfile_name, objfile_name (objfile)) != 0) |
45cfd468 DE |
2788 | { |
2789 | xfree (last_objfile_name); | |
4262abfb | 2790 | last_objfile_name = xstrdup (objfile_name (objfile)); |
22068491 TT |
2791 | fprintf_filtered (gdb_stdlog, |
2792 | "Creating one or more symtabs for objfile %s ...\n", | |
2793 | last_objfile_name); | |
45cfd468 | 2794 | } |
22068491 TT |
2795 | fprintf_filtered (gdb_stdlog, |
2796 | "Created symtab %s for module %s.\n", | |
2797 | host_address_to_string (symtab), filename); | |
45cfd468 DE |
2798 | } |
2799 | ||
43f3e411 DE |
2800 | /* Add it to CUST's list of symtabs. */ |
2801 | if (cust->filetabs == NULL) | |
2802 | { | |
2803 | cust->filetabs = symtab; | |
2804 | cust->last_filetab = symtab; | |
2805 | } | |
2806 | else | |
2807 | { | |
2808 | cust->last_filetab->next = symtab; | |
2809 | cust->last_filetab = symtab; | |
2810 | } | |
2811 | ||
2812 | /* Backlink to the containing compunit symtab. */ | |
2813 | symtab->compunit_symtab = cust; | |
2814 | ||
2815 | return symtab; | |
2816 | } | |
2817 | ||
2818 | /* Allocate and initialize a new compunit. | |
2819 | NAME is the name of the main source file, if there is one, or some | |
2820 | descriptive text if there are no source files. */ | |
2821 | ||
2822 | struct compunit_symtab * | |
2823 | allocate_compunit_symtab (struct objfile *objfile, const char *name) | |
2824 | { | |
2825 | struct compunit_symtab *cu = OBSTACK_ZALLOC (&objfile->objfile_obstack, | |
2826 | struct compunit_symtab); | |
2827 | const char *saved_name; | |
2828 | ||
2829 | cu->objfile = objfile; | |
2830 | ||
2831 | /* The name we record here is only for display/debugging purposes. | |
2832 | Just save the basename to avoid path issues (too long for display, | |
2833 | relative vs absolute, etc.). */ | |
2834 | saved_name = lbasename (name); | |
224c3ddb SM |
2835 | cu->name |
2836 | = (const char *) obstack_copy0 (&objfile->objfile_obstack, saved_name, | |
2837 | strlen (saved_name)); | |
43f3e411 DE |
2838 | |
2839 | COMPUNIT_DEBUGFORMAT (cu) = "unknown"; | |
2840 | ||
2841 | if (symtab_create_debug) | |
2842 | { | |
22068491 TT |
2843 | fprintf_filtered (gdb_stdlog, |
2844 | "Created compunit symtab %s for %s.\n", | |
2845 | host_address_to_string (cu), | |
2846 | cu->name); | |
43f3e411 DE |
2847 | } |
2848 | ||
2849 | return cu; | |
2850 | } | |
2851 | ||
2852 | /* Hook CU to the objfile it comes from. */ | |
2853 | ||
2854 | void | |
2855 | add_compunit_symtab_to_objfile (struct compunit_symtab *cu) | |
2856 | { | |
2857 | cu->next = cu->objfile->compunit_symtabs; | |
2858 | cu->objfile->compunit_symtabs = cu; | |
c906108c | 2859 | } |
c906108c | 2860 | \f |
c5aa993b | 2861 | |
b15cc25c PA |
2862 | /* Reset all data structures in gdb which may contain references to |
2863 | symbol table data. */ | |
c906108c SS |
2864 | |
2865 | void | |
b15cc25c | 2866 | clear_symtab_users (symfile_add_flags add_flags) |
c906108c SS |
2867 | { |
2868 | /* Someday, we should do better than this, by only blowing away | |
2869 | the things that really need to be blown. */ | |
c0501be5 DJ |
2870 | |
2871 | /* Clear the "current" symtab first, because it is no longer valid. | |
2872 | breakpoint_re_set may try to access the current symtab. */ | |
2873 | clear_current_source_symtab_and_line (); | |
2874 | ||
c906108c | 2875 | clear_displays (); |
1bfeeb0f | 2876 | clear_last_displayed_sal (); |
c906108c | 2877 | clear_pc_function_cache (); |
76727919 | 2878 | gdb::observers::new_objfile.notify (NULL); |
9bdcbae7 DJ |
2879 | |
2880 | /* Clear globals which might have pointed into a removed objfile. | |
2881 | FIXME: It's not clear which of these are supposed to persist | |
2882 | between expressions and which ought to be reset each time. */ | |
2883 | expression_context_block = NULL; | |
aee1fcdf | 2884 | innermost_block.reset (); |
8756216b DP |
2885 | |
2886 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2887 | varobj_invalidate (); | |
2888 | ||
e700d1b2 JB |
2889 | /* Now that the various caches have been cleared, we can re_set |
2890 | our breakpoints without risking it using stale data. */ | |
2891 | if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) | |
2892 | breakpoint_re_set (); | |
c906108c SS |
2893 | } |
2894 | ||
74b7792f AC |
2895 | static void |
2896 | clear_symtab_users_cleanup (void *ignore) | |
2897 | { | |
c1e56572 | 2898 | clear_symtab_users (0); |
74b7792f | 2899 | } |
c906108c | 2900 | \f |
c906108c SS |
2901 | /* OVERLAYS: |
2902 | The following code implements an abstraction for debugging overlay sections. | |
2903 | ||
2904 | The target model is as follows: | |
2905 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2906 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2907 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2908 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2909 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2910 | sections should be considered to be mapped from the VMA to the LMA. |
2911 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2912 | For instance, if a section has been mapped then its contents |
c5aa993b | 2913 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2914 | |
2915 | Two levels of debugger support for overlays are available. One is | |
2916 | "manual", in which the debugger relies on the user to tell it which | |
2917 | overlays are currently mapped. This level of support is | |
2918 | implemented entirely in the core debugger, and the information about | |
2919 | whether a section is mapped is kept in the objfile->obj_section table. | |
2920 | ||
2921 | The second level of support is "automatic", and is only available if | |
2922 | the target-specific code provides functionality to read the target's | |
2923 | overlay mapping table, and translate its contents for the debugger | |
2924 | (by updating the mapped state information in the obj_section tables). | |
2925 | ||
2926 | The interface is as follows: | |
c5aa993b JM |
2927 | User commands: |
2928 | overlay map <name> -- tell gdb to consider this section mapped | |
2929 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2930 | overlay list -- list the sections that GDB thinks are mapped | |
2931 | overlay read-target -- get the target's state of what's mapped | |
2932 | overlay off/manual/auto -- set overlay debugging state | |
2933 | Functional interface: | |
2934 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2935 | section, return that section. | |
5417f6dc | 2936 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2937 | the pc, either in its VMA or its LMA |
714835d5 | 2938 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2939 | section_is_overlay(sect): true if section's VMA != LMA |
2940 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2941 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2942 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2943 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2944 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2945 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2946 | either in VMA or LMA depending on whether | |
c378eb4e | 2947 | the symbol's section is currently mapped. */ |
c906108c SS |
2948 | |
2949 | /* Overlay debugging state: */ | |
2950 | ||
d874f1e2 | 2951 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c378eb4e | 2952 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state. */ |
c906108c | 2953 | |
c906108c | 2954 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2955 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2956 | SECTION is loaded at an address different from where it will "run". */ |
2957 | ||
2958 | int | |
714835d5 | 2959 | section_is_overlay (struct obj_section *section) |
c906108c | 2960 | { |
714835d5 UW |
2961 | if (overlay_debugging && section) |
2962 | { | |
714835d5 | 2963 | asection *bfd_section = section->the_bfd_section; |
f888f159 | 2964 | |
714835d5 UW |
2965 | if (bfd_section_lma (abfd, bfd_section) != 0 |
2966 | && bfd_section_lma (abfd, bfd_section) | |
2967 | != bfd_section_vma (abfd, bfd_section)) | |
2968 | return 1; | |
2969 | } | |
c906108c SS |
2970 | |
2971 | return 0; | |
2972 | } | |
2973 | ||
2974 | /* Function: overlay_invalidate_all (void) | |
2975 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2976 | ||
2977 | static void | |
fba45db2 | 2978 | overlay_invalidate_all (void) |
c906108c | 2979 | { |
c5aa993b | 2980 | struct objfile *objfile; |
c906108c SS |
2981 | struct obj_section *sect; |
2982 | ||
2983 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2984 | if (section_is_overlay (sect)) |
2985 | sect->ovly_mapped = -1; | |
c906108c SS |
2986 | } |
2987 | ||
714835d5 | 2988 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2989 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2990 | |
2991 | Access to the ovly_mapped flag is restricted to this function, so | |
2992 | that we can do automatic update. If the global flag | |
2993 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2994 | overlay_invalidate_all. If the mapped state of the particular | |
2995 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2996 | ||
714835d5 UW |
2997 | int |
2998 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2999 | { |
9216df95 UW |
3000 | struct gdbarch *gdbarch; |
3001 | ||
714835d5 | 3002 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
3003 | return 0; |
3004 | ||
c5aa993b | 3005 | switch (overlay_debugging) |
c906108c SS |
3006 | { |
3007 | default: | |
d874f1e2 | 3008 | case ovly_off: |
c5aa993b | 3009 | return 0; /* overlay debugging off */ |
d874f1e2 | 3010 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3011 | /* Unles there is a gdbarch_overlay_update function, |
c378eb4e | 3012 | there's really nothing useful to do here (can't really go auto). */ |
9216df95 UW |
3013 | gdbarch = get_objfile_arch (osect->objfile); |
3014 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
3015 | { |
3016 | if (overlay_cache_invalid) | |
3017 | { | |
3018 | overlay_invalidate_all (); | |
3019 | overlay_cache_invalid = 0; | |
3020 | } | |
3021 | if (osect->ovly_mapped == -1) | |
9216df95 | 3022 | gdbarch_overlay_update (gdbarch, osect); |
c906108c | 3023 | } |
86a73007 | 3024 | /* fall thru */ |
d874f1e2 | 3025 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3026 | return osect->ovly_mapped == 1; |
3027 | } | |
3028 | } | |
3029 | ||
c906108c SS |
3030 | /* Function: pc_in_unmapped_range |
3031 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3032 | ||
3033 | CORE_ADDR | |
714835d5 | 3034 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3035 | { |
714835d5 UW |
3036 | if (section_is_overlay (section)) |
3037 | { | |
3038 | bfd *abfd = section->objfile->obfd; | |
3039 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3040 | |
714835d5 UW |
3041 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3042 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3043 | CORE_ADDR offset = obj_section_offset (section); | |
3044 | ||
3045 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3046 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3047 | return 1; | |
3048 | } | |
c906108c | 3049 | |
c906108c SS |
3050 | return 0; |
3051 | } | |
3052 | ||
3053 | /* Function: pc_in_mapped_range | |
3054 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3055 | ||
3056 | CORE_ADDR | |
714835d5 | 3057 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3058 | { |
714835d5 UW |
3059 | if (section_is_overlay (section)) |
3060 | { | |
3061 | if (obj_section_addr (section) <= pc | |
3062 | && pc < obj_section_endaddr (section)) | |
3063 | return 1; | |
3064 | } | |
c906108c | 3065 | |
c906108c SS |
3066 | return 0; |
3067 | } | |
3068 | ||
9ec8e6a0 JB |
3069 | /* Return true if the mapped ranges of sections A and B overlap, false |
3070 | otherwise. */ | |
3b7bacac | 3071 | |
b9362cc7 | 3072 | static int |
714835d5 | 3073 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3074 | { |
714835d5 UW |
3075 | CORE_ADDR a_start = obj_section_addr (a); |
3076 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3077 | CORE_ADDR b_start = obj_section_addr (b); | |
3078 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3079 | |
3080 | return (a_start < b_end && b_start < a_end); | |
3081 | } | |
3082 | ||
c906108c SS |
3083 | /* Function: overlay_unmapped_address (PC, SECTION) |
3084 | Returns the address corresponding to PC in the unmapped (load) range. | |
3085 | May be the same as PC. */ | |
3086 | ||
3087 | CORE_ADDR | |
714835d5 | 3088 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3089 | { |
714835d5 UW |
3090 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3091 | { | |
714835d5 | 3092 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3093 | |
714835d5 UW |
3094 | return pc + bfd_section_lma (abfd, bfd_section) |
3095 | - bfd_section_vma (abfd, bfd_section); | |
3096 | } | |
c906108c SS |
3097 | |
3098 | return pc; | |
3099 | } | |
3100 | ||
3101 | /* Function: overlay_mapped_address (PC, SECTION) | |
3102 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3103 | May be the same as PC. */ | |
3104 | ||
3105 | CORE_ADDR | |
714835d5 | 3106 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3107 | { |
714835d5 UW |
3108 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3109 | { | |
714835d5 | 3110 | asection *bfd_section = section->the_bfd_section; |
fbd35540 | 3111 | |
714835d5 UW |
3112 | return pc + bfd_section_vma (abfd, bfd_section) |
3113 | - bfd_section_lma (abfd, bfd_section); | |
3114 | } | |
c906108c SS |
3115 | |
3116 | return pc; | |
3117 | } | |
3118 | ||
5417f6dc | 3119 | /* Function: symbol_overlayed_address |
c906108c SS |
3120 | Return one of two addresses (relative to the VMA or to the LMA), |
3121 | depending on whether the section is mapped or not. */ | |
3122 | ||
c5aa993b | 3123 | CORE_ADDR |
714835d5 | 3124 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3125 | { |
3126 | if (overlay_debugging) | |
3127 | { | |
c378eb4e | 3128 | /* If the symbol has no section, just return its regular address. */ |
c906108c SS |
3129 | if (section == 0) |
3130 | return address; | |
c378eb4e MS |
3131 | /* If the symbol's section is not an overlay, just return its |
3132 | address. */ | |
c906108c SS |
3133 | if (!section_is_overlay (section)) |
3134 | return address; | |
c378eb4e | 3135 | /* If the symbol's section is mapped, just return its address. */ |
c906108c SS |
3136 | if (section_is_mapped (section)) |
3137 | return address; | |
3138 | /* | |
3139 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3140 | * then return its LOADED address rather than its vma address!! | |
3141 | */ | |
3142 | return overlay_unmapped_address (address, section); | |
3143 | } | |
3144 | return address; | |
3145 | } | |
3146 | ||
5417f6dc | 3147 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3148 | Return the best-match overlay section for PC: |
3149 | If PC matches a mapped overlay section's VMA, return that section. | |
3150 | Else if PC matches an unmapped section's VMA, return that section. | |
3151 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3152 | ||
714835d5 | 3153 | struct obj_section * |
fba45db2 | 3154 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3155 | { |
c5aa993b | 3156 | struct objfile *objfile; |
c906108c SS |
3157 | struct obj_section *osect, *best_match = NULL; |
3158 | ||
3159 | if (overlay_debugging) | |
b631e59b KT |
3160 | { |
3161 | ALL_OBJSECTIONS (objfile, osect) | |
3162 | if (section_is_overlay (osect)) | |
c5aa993b | 3163 | { |
b631e59b KT |
3164 | if (pc_in_mapped_range (pc, osect)) |
3165 | { | |
3166 | if (section_is_mapped (osect)) | |
3167 | return osect; | |
3168 | else | |
3169 | best_match = osect; | |
3170 | } | |
3171 | else if (pc_in_unmapped_range (pc, osect)) | |
c5aa993b JM |
3172 | best_match = osect; |
3173 | } | |
b631e59b | 3174 | } |
714835d5 | 3175 | return best_match; |
c906108c SS |
3176 | } |
3177 | ||
3178 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3179 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3180 | currently marked as MAPPED, return that section. Else return NULL. */ |
3181 | ||
714835d5 | 3182 | struct obj_section * |
fba45db2 | 3183 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3184 | { |
c5aa993b | 3185 | struct objfile *objfile; |
c906108c SS |
3186 | struct obj_section *osect; |
3187 | ||
3188 | if (overlay_debugging) | |
b631e59b KT |
3189 | { |
3190 | ALL_OBJSECTIONS (objfile, osect) | |
3191 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) | |
3192 | return osect; | |
3193 | } | |
c906108c SS |
3194 | |
3195 | return NULL; | |
3196 | } | |
3197 | ||
3198 | /* Function: list_overlays_command | |
c378eb4e | 3199 | Print a list of mapped sections and their PC ranges. */ |
c906108c | 3200 | |
5d3055ad | 3201 | static void |
2cf311eb | 3202 | list_overlays_command (const char *args, int from_tty) |
c906108c | 3203 | { |
c5aa993b JM |
3204 | int nmapped = 0; |
3205 | struct objfile *objfile; | |
c906108c SS |
3206 | struct obj_section *osect; |
3207 | ||
3208 | if (overlay_debugging) | |
b631e59b KT |
3209 | { |
3210 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3211 | if (section_is_mapped (osect)) |
b631e59b KT |
3212 | { |
3213 | struct gdbarch *gdbarch = get_objfile_arch (objfile); | |
3214 | const char *name; | |
3215 | bfd_vma lma, vma; | |
3216 | int size; | |
3217 | ||
3218 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3219 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3220 | size = bfd_get_section_size (osect->the_bfd_section); | |
3221 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3222 | ||
3223 | printf_filtered ("Section %s, loaded at ", name); | |
3224 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); | |
3225 | puts_filtered (" - "); | |
3226 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); | |
3227 | printf_filtered (", mapped at "); | |
3228 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); | |
3229 | puts_filtered (" - "); | |
3230 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); | |
3231 | puts_filtered ("\n"); | |
3232 | ||
3233 | nmapped++; | |
3234 | } | |
3235 | } | |
c906108c | 3236 | if (nmapped == 0) |
a3f17187 | 3237 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3238 | } |
3239 | ||
3240 | /* Function: map_overlay_command | |
3241 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3242 | ||
5d3055ad | 3243 | static void |
2cf311eb | 3244 | map_overlay_command (const char *args, int from_tty) |
c906108c | 3245 | { |
c5aa993b JM |
3246 | struct objfile *objfile, *objfile2; |
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. */ |
c906108c SS |
3258 | ALL_OBJSECTIONS (objfile, sec) |
3259 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b | 3260 | { |
c378eb4e | 3261 | /* Now, check to see if the section is an overlay. */ |
714835d5 | 3262 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3263 | continue; /* not an overlay section */ |
3264 | ||
c378eb4e | 3265 | /* Mark the overlay as "mapped". */ |
c5aa993b JM |
3266 | sec->ovly_mapped = 1; |
3267 | ||
3268 | /* Next, make a pass and unmap any sections that are | |
3269 | overlapped by this new section: */ | |
3270 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3271 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3272 | { |
3273 | if (info_verbose) | |
a3f17187 | 3274 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3275 | bfd_section_name (objfile->obfd, |
3276 | sec2->the_bfd_section)); | |
c378eb4e | 3277 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2. */ |
c5aa993b JM |
3278 | } |
3279 | return; | |
3280 | } | |
8a3fe4f8 | 3281 | error (_("No overlay section called %s"), args); |
c906108c SS |
3282 | } |
3283 | ||
3284 | /* Function: unmap_overlay_command | |
5417f6dc | 3285 | Mark the overlay section as unmapped |
c906108c SS |
3286 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3287 | ||
5d3055ad | 3288 | static void |
2cf311eb | 3289 | unmap_overlay_command (const char *args, int from_tty) |
c906108c | 3290 | { |
c5aa993b | 3291 | struct objfile *objfile; |
7a270e0c | 3292 | struct obj_section *sec = NULL; |
c906108c SS |
3293 | |
3294 | if (!overlay_debugging) | |
3e43a32a MS |
3295 | error (_("Overlay debugging not enabled. " |
3296 | "Use either the 'overlay auto' or\n" | |
3297 | "the 'overlay manual' command.")); | |
c906108c SS |
3298 | |
3299 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3300 | error (_("Argument required: name of an overlay section")); |
c906108c | 3301 | |
c378eb4e | 3302 | /* First, find a section matching the user supplied argument. */ |
c906108c SS |
3303 | ALL_OBJSECTIONS (objfile, sec) |
3304 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3305 | { |
3306 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3307 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3308 | sec->ovly_mapped = 0; |
3309 | return; | |
3310 | } | |
8a3fe4f8 | 3311 | error (_("No overlay section called %s"), args); |
c906108c SS |
3312 | } |
3313 | ||
3314 | /* Function: overlay_auto_command | |
3315 | A utility command to turn on overlay debugging. | |
c378eb4e | 3316 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3317 | |
3318 | static void | |
2cf311eb | 3319 | overlay_auto_command (const char *args, int from_tty) |
c906108c | 3320 | { |
d874f1e2 | 3321 | overlay_debugging = ovly_auto; |
1900040c | 3322 | enable_overlay_breakpoints (); |
c906108c | 3323 | if (info_verbose) |
a3f17187 | 3324 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3325 | } |
3326 | ||
3327 | /* Function: overlay_manual_command | |
3328 | A utility command to turn on overlay debugging. | |
c378eb4e | 3329 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3330 | |
3331 | static void | |
2cf311eb | 3332 | overlay_manual_command (const char *args, int from_tty) |
c906108c | 3333 | { |
d874f1e2 | 3334 | overlay_debugging = ovly_on; |
1900040c | 3335 | disable_overlay_breakpoints (); |
c906108c | 3336 | if (info_verbose) |
a3f17187 | 3337 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3338 | } |
3339 | ||
3340 | /* Function: overlay_off_command | |
3341 | A utility command to turn on overlay debugging. | |
c378eb4e | 3342 | Possibly this should be done via a set/show command. */ |
c906108c SS |
3343 | |
3344 | static void | |
2cf311eb | 3345 | overlay_off_command (const char *args, int from_tty) |
c906108c | 3346 | { |
d874f1e2 | 3347 | overlay_debugging = ovly_off; |
1900040c | 3348 | disable_overlay_breakpoints (); |
c906108c | 3349 | if (info_verbose) |
a3f17187 | 3350 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3351 | } |
3352 | ||
3353 | static void | |
2cf311eb | 3354 | overlay_load_command (const char *args, int from_tty) |
c906108c | 3355 | { |
e17c207e UW |
3356 | struct gdbarch *gdbarch = get_current_arch (); |
3357 | ||
3358 | if (gdbarch_overlay_update_p (gdbarch)) | |
3359 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3360 | else |
8a3fe4f8 | 3361 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3362 | } |
3363 | ||
3364 | /* Function: overlay_command | |
c378eb4e | 3365 | A place-holder for a mis-typed command. */ |
c906108c | 3366 | |
c378eb4e | 3367 | /* Command list chain containing all defined "overlay" subcommands. */ |
28578e6b | 3368 | static struct cmd_list_element *overlaylist; |
c906108c SS |
3369 | |
3370 | static void | |
981a3fb3 | 3371 | overlay_command (const char *args, int from_tty) |
c906108c | 3372 | { |
c5aa993b | 3373 | printf_unfiltered |
c906108c | 3374 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
635c7e8a | 3375 | help_list (overlaylist, "overlay ", all_commands, gdb_stdout); |
c906108c SS |
3376 | } |
3377 | ||
c906108c SS |
3378 | /* Target Overlays for the "Simplest" overlay manager: |
3379 | ||
5417f6dc RM |
3380 | This is GDB's default target overlay layer. It works with the |
3381 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3382 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3383 | so targets that use a different runtime overlay manager can |
c906108c SS |
3384 | substitute their own overlay_update function and take over the |
3385 | function pointer. | |
3386 | ||
3387 | The overlay_update function pokes around in the target's data structures | |
3388 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3389 | this information. | |
3390 | ||
3391 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3392 | unsigned _novlys; /# number of overlay sections #/ |
3393 | unsigned _ovly_table[_novlys][4] = { | |
438e1e42 | 3394 | {VMA, OSIZE, LMA, MAPPED}, /# one entry per overlay section #/ |
c5aa993b JM |
3395 | {..., ..., ..., ...}, |
3396 | } | |
3397 | unsigned _novly_regions; /# number of overlay regions #/ | |
3398 | unsigned _ovly_region_table[_novly_regions][3] = { | |
438e1e42 | 3399 | {VMA, OSIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ |
c5aa993b JM |
3400 | {..., ..., ...}, |
3401 | } | |
c906108c SS |
3402 | These functions will attempt to update GDB's mappedness state in the |
3403 | symbol section table, based on the target's mappedness state. | |
3404 | ||
3405 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3406 | attempt to detect when the cached copy is invalidated. The main | |
3407 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3408 | the cached table and re-reads only the entry for that section from | |
c378eb4e | 3409 | the target (whenever possible). */ |
c906108c SS |
3410 | |
3411 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3412 | static unsigned (*cache_ovly_table)[4] = 0; |
c5aa993b | 3413 | static unsigned cache_novlys = 0; |
c906108c | 3414 | static CORE_ADDR cache_ovly_table_base = 0; |
c5aa993b JM |
3415 | enum ovly_index |
3416 | { | |
438e1e42 | 3417 | VMA, OSIZE, LMA, MAPPED |
c5aa993b | 3418 | }; |
c906108c | 3419 | |
c378eb4e | 3420 | /* Throw away the cached copy of _ovly_table. */ |
3b7bacac | 3421 | |
c906108c | 3422 | static void |
fba45db2 | 3423 | simple_free_overlay_table (void) |
c906108c SS |
3424 | { |
3425 | if (cache_ovly_table) | |
b8c9b27d | 3426 | xfree (cache_ovly_table); |
c5aa993b | 3427 | cache_novlys = 0; |
c906108c SS |
3428 | cache_ovly_table = NULL; |
3429 | cache_ovly_table_base = 0; | |
3430 | } | |
3431 | ||
9216df95 | 3432 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c378eb4e | 3433 | Convert to host order. int LEN is number of ints. */ |
3b7bacac | 3434 | |
c906108c | 3435 | static void |
9216df95 | 3436 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3437 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3438 | { |
c378eb4e | 3439 | /* FIXME (alloca): Not safe if array is very large. */ |
224c3ddb | 3440 | gdb_byte *buf = (gdb_byte *) alloca (len * size); |
c5aa993b | 3441 | int i; |
c906108c | 3442 | |
9216df95 | 3443 | read_memory (memaddr, buf, len * size); |
c906108c | 3444 | for (i = 0; i < len; i++) |
e17a4113 | 3445 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3446 | } |
3447 | ||
3448 | /* Find and grab a copy of the target _ovly_table | |
c378eb4e | 3449 | (and _novlys, which is needed for the table's size). */ |
3b7bacac | 3450 | |
c5aa993b | 3451 | static int |
fba45db2 | 3452 | simple_read_overlay_table (void) |
c906108c | 3453 | { |
3b7344d5 | 3454 | struct bound_minimal_symbol novlys_msym; |
7c7b6655 | 3455 | struct bound_minimal_symbol ovly_table_msym; |
9216df95 UW |
3456 | struct gdbarch *gdbarch; |
3457 | int word_size; | |
e17a4113 | 3458 | enum bfd_endian byte_order; |
c906108c SS |
3459 | |
3460 | simple_free_overlay_table (); | |
9b27852e | 3461 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
3b7344d5 | 3462 | if (! novlys_msym.minsym) |
c906108c | 3463 | { |
8a3fe4f8 | 3464 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3465 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3466 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3467 | return 0; |
c906108c | 3468 | } |
0d43edd1 | 3469 | |
7c7b6655 TT |
3470 | ovly_table_msym = lookup_bound_minimal_symbol ("_ovly_table"); |
3471 | if (! ovly_table_msym.minsym) | |
0d43edd1 | 3472 | { |
8a3fe4f8 | 3473 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3474 | "`_ovly_table' array\n" |
8a3fe4f8 | 3475 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3476 | return 0; |
3477 | } | |
3478 | ||
7c7b6655 | 3479 | gdbarch = get_objfile_arch (ovly_table_msym.objfile); |
9216df95 | 3480 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; |
e17a4113 | 3481 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3482 | |
77e371c0 TT |
3483 | cache_novlys = read_memory_integer (BMSYMBOL_VALUE_ADDRESS (novlys_msym), |
3484 | 4, byte_order); | |
0d43edd1 | 3485 | cache_ovly_table |
224c3ddb | 3486 | = (unsigned int (*)[4]) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); |
77e371c0 | 3487 | cache_ovly_table_base = BMSYMBOL_VALUE_ADDRESS (ovly_table_msym); |
0d43edd1 | 3488 | read_target_long_array (cache_ovly_table_base, |
777ea8f1 | 3489 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3490 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3491 | |
c5aa993b | 3492 | return 1; /* SUCCESS */ |
c906108c SS |
3493 | } |
3494 | ||
5417f6dc | 3495 | /* Function: simple_overlay_update_1 |
c906108c SS |
3496 | A helper function for simple_overlay_update. Assuming a cached copy |
3497 | of _ovly_table exists, look through it to find an entry whose vma, | |
3498 | lma and size match those of OSECT. Re-read the entry and make sure | |
3499 | it still matches OSECT (else the table may no longer be valid). | |
3500 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3501 | success, 0 for failure. */ | |
3502 | ||
3503 | static int | |
fba45db2 | 3504 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c | 3505 | { |
764c99c1 | 3506 | int i; |
fbd35540 | 3507 | asection *bsect = osect->the_bfd_section; |
9216df95 UW |
3508 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3509 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3510 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3511 | |
c906108c | 3512 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3513 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3514 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c | 3515 | { |
9216df95 UW |
3516 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3517 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3518 | 4, word_size, byte_order); |
fbd35540 | 3519 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3520 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c906108c SS |
3521 | { |
3522 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3523 | return 1; | |
3524 | } | |
c378eb4e | 3525 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3526 | return 0; |
3527 | } | |
3528 | return 0; | |
3529 | } | |
3530 | ||
3531 | /* Function: simple_overlay_update | |
5417f6dc RM |
3532 | If OSECT is NULL, then update all sections' mapped state |
3533 | (after re-reading the entire target _ovly_table). | |
3534 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3535 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3536 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3537 | re-read the entire cache, and go ahead and update all sections. */ |
3538 | ||
1c772458 | 3539 | void |
fba45db2 | 3540 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3541 | { |
c5aa993b | 3542 | struct objfile *objfile; |
c906108c | 3543 | |
c378eb4e | 3544 | /* Were we given an osect to look up? NULL means do all of them. */ |
c906108c | 3545 | if (osect) |
c378eb4e | 3546 | /* Have we got a cached copy of the target's overlay table? */ |
c906108c | 3547 | if (cache_ovly_table != NULL) |
9cc89665 MS |
3548 | { |
3549 | /* Does its cached location match what's currently in the | |
3550 | symtab? */ | |
3b7344d5 | 3551 | struct bound_minimal_symbol minsym |
9cc89665 MS |
3552 | = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
3553 | ||
3b7344d5 | 3554 | if (minsym.minsym == NULL) |
9cc89665 MS |
3555 | error (_("Error reading inferior's overlay table: couldn't " |
3556 | "find `_ovly_table' array\n" | |
3557 | "in inferior. Use `overlay manual' mode.")); | |
3558 | ||
77e371c0 | 3559 | if (cache_ovly_table_base == BMSYMBOL_VALUE_ADDRESS (minsym)) |
9cc89665 MS |
3560 | /* Then go ahead and try to look up this single section in |
3561 | the cache. */ | |
3562 | if (simple_overlay_update_1 (osect)) | |
3563 | /* Found it! We're done. */ | |
3564 | return; | |
3565 | } | |
c906108c SS |
3566 | |
3567 | /* Cached table no good: need to read the entire table anew. | |
3568 | Or else we want all the sections, in which case it's actually | |
3569 | more efficient to read the whole table in one block anyway. */ | |
3570 | ||
0d43edd1 JB |
3571 | if (! simple_read_overlay_table ()) |
3572 | return; | |
3573 | ||
c378eb4e | 3574 | /* Now may as well update all sections, even if only one was requested. */ |
c906108c | 3575 | ALL_OBJSECTIONS (objfile, osect) |
714835d5 | 3576 | if (section_is_overlay (osect)) |
c5aa993b | 3577 | { |
764c99c1 | 3578 | int i; |
fbd35540 | 3579 | asection *bsect = osect->the_bfd_section; |
c5aa993b | 3580 | |
c5aa993b | 3581 | for (i = 0; i < cache_novlys; i++) |
fbd35540 | 3582 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
764c99c1 | 3583 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)) |
c378eb4e | 3584 | { /* obj_section matches i'th entry in ovly_table. */ |
c5aa993b | 3585 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
c378eb4e | 3586 | break; /* finished with inner for loop: break out. */ |
c5aa993b JM |
3587 | } |
3588 | } | |
c906108c SS |
3589 | } |
3590 | ||
086df311 DJ |
3591 | /* Set the output sections and output offsets for section SECTP in |
3592 | ABFD. The relocation code in BFD will read these offsets, so we | |
3593 | need to be sure they're initialized. We map each section to itself, | |
3594 | with no offset; this means that SECTP->vma will be honored. */ | |
3595 | ||
3596 | static void | |
3597 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3598 | { | |
3599 | sectp->output_section = sectp; | |
3600 | sectp->output_offset = 0; | |
3601 | } | |
3602 | ||
ac8035ab TG |
3603 | /* Default implementation for sym_relocate. */ |
3604 | ||
ac8035ab TG |
3605 | bfd_byte * |
3606 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3607 | bfd_byte *buf) | |
3608 | { | |
3019eac3 DE |
3609 | /* Use sectp->owner instead of objfile->obfd. sectp may point to a |
3610 | DWO file. */ | |
3611 | bfd *abfd = sectp->owner; | |
ac8035ab TG |
3612 | |
3613 | /* We're only interested in sections with relocation | |
3614 | information. */ | |
3615 | if ((sectp->flags & SEC_RELOC) == 0) | |
3616 | return NULL; | |
3617 | ||
3618 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3619 | all sections begin at 0. */ | |
3620 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3621 | ||
3622 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3623 | } | |
3624 | ||
086df311 DJ |
3625 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3626 | contents are stored in BUF if it is non-NULL, or returned in a | |
3627 | malloc'd buffer otherwise. | |
3628 | ||
3629 | For some platforms and debug info formats, shared libraries contain | |
3630 | relocations against the debug sections (particularly for DWARF-2; | |
3631 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3632 | the version of the linker in use). Also, ELF object files naturally | |
3633 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3634 | the relocations in order to get the locations of symbols correct. |
3635 | Another example that may require relocation processing, is the | |
3636 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3637 | debug section. */ | |
086df311 DJ |
3638 | |
3639 | bfd_byte * | |
ac8035ab TG |
3640 | symfile_relocate_debug_section (struct objfile *objfile, |
3641 | asection *sectp, bfd_byte *buf) | |
086df311 | 3642 | { |
ac8035ab | 3643 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3644 | |
ac8035ab | 3645 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3646 | } |
c906108c | 3647 | |
31d99776 DJ |
3648 | struct symfile_segment_data * |
3649 | get_symfile_segment_data (bfd *abfd) | |
3650 | { | |
00b5771c | 3651 | const struct sym_fns *sf = find_sym_fns (abfd); |
31d99776 DJ |
3652 | |
3653 | if (sf == NULL) | |
3654 | return NULL; | |
3655 | ||
3656 | return sf->sym_segments (abfd); | |
3657 | } | |
3658 | ||
3659 | void | |
3660 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3661 | { | |
3662 | xfree (data->segment_bases); | |
3663 | xfree (data->segment_sizes); | |
3664 | xfree (data->segment_info); | |
3665 | xfree (data); | |
3666 | } | |
3667 | ||
28c32713 JB |
3668 | /* Given: |
3669 | - DATA, containing segment addresses from the object file ABFD, and | |
3670 | the mapping from ABFD's sections onto the segments that own them, | |
3671 | and | |
3672 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3673 | segment addresses reported by the target, | |
3674 | store the appropriate offsets for each section in OFFSETS. | |
3675 | ||
3676 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3677 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3678 | ||
8d385431 DJ |
3679 | If there are more entries, then ignore the extra. The target may |
3680 | not be able to distinguish between an empty data segment and a | |
3681 | missing data segment; a missing text segment is less plausible. */ | |
3b7bacac | 3682 | |
31d99776 | 3683 | int |
3189cb12 DE |
3684 | symfile_map_offsets_to_segments (bfd *abfd, |
3685 | const struct symfile_segment_data *data, | |
31d99776 DJ |
3686 | struct section_offsets *offsets, |
3687 | int num_segment_bases, | |
3688 | const CORE_ADDR *segment_bases) | |
3689 | { | |
3690 | int i; | |
3691 | asection *sect; | |
3692 | ||
28c32713 JB |
3693 | /* It doesn't make sense to call this function unless you have some |
3694 | segment base addresses. */ | |
202b96c1 | 3695 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3696 | |
31d99776 DJ |
3697 | /* If we do not have segment mappings for the object file, we |
3698 | can not relocate it by segments. */ | |
3699 | gdb_assert (data != NULL); | |
3700 | gdb_assert (data->num_segments > 0); | |
3701 | ||
31d99776 DJ |
3702 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3703 | { | |
31d99776 DJ |
3704 | int which = data->segment_info[i]; |
3705 | ||
28c32713 JB |
3706 | gdb_assert (0 <= which && which <= data->num_segments); |
3707 | ||
3708 | /* Don't bother computing offsets for sections that aren't | |
3709 | loaded as part of any segment. */ | |
3710 | if (! which) | |
3711 | continue; | |
3712 | ||
3713 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3714 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3715 | if (which > num_segment_bases) |
28c32713 | 3716 | which = num_segment_bases; |
31d99776 | 3717 | |
28c32713 JB |
3718 | offsets->offsets[i] = (segment_bases[which - 1] |
3719 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3720 | } |
3721 | ||
3722 | return 1; | |
3723 | } | |
3724 | ||
3725 | static void | |
3726 | symfile_find_segment_sections (struct objfile *objfile) | |
3727 | { | |
3728 | bfd *abfd = objfile->obfd; | |
3729 | int i; | |
3730 | asection *sect; | |
3731 | struct symfile_segment_data *data; | |
3732 | ||
3733 | data = get_symfile_segment_data (objfile->obfd); | |
3734 | if (data == NULL) | |
3735 | return; | |
3736 | ||
3737 | if (data->num_segments != 1 && data->num_segments != 2) | |
3738 | { | |
3739 | free_symfile_segment_data (data); | |
3740 | return; | |
3741 | } | |
3742 | ||
3743 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3744 | { | |
31d99776 DJ |
3745 | int which = data->segment_info[i]; |
3746 | ||
3747 | if (which == 1) | |
3748 | { | |
3749 | if (objfile->sect_index_text == -1) | |
3750 | objfile->sect_index_text = sect->index; | |
3751 | ||
3752 | if (objfile->sect_index_rodata == -1) | |
3753 | objfile->sect_index_rodata = sect->index; | |
3754 | } | |
3755 | else if (which == 2) | |
3756 | { | |
3757 | if (objfile->sect_index_data == -1) | |
3758 | objfile->sect_index_data = sect->index; | |
3759 | ||
3760 | if (objfile->sect_index_bss == -1) | |
3761 | objfile->sect_index_bss = sect->index; | |
3762 | } | |
3763 | } | |
3764 | ||
3765 | free_symfile_segment_data (data); | |
3766 | } | |
3767 | ||
76ad5e1e NB |
3768 | /* Listen for free_objfile events. */ |
3769 | ||
3770 | static void | |
3771 | symfile_free_objfile (struct objfile *objfile) | |
3772 | { | |
c33b2f12 MM |
3773 | /* Remove the target sections owned by this objfile. */ |
3774 | if (objfile != NULL) | |
76ad5e1e NB |
3775 | remove_target_sections ((void *) objfile); |
3776 | } | |
3777 | ||
540c2971 DE |
3778 | /* Wrapper around the quick_symbol_functions expand_symtabs_matching "method". |
3779 | Expand all symtabs that match the specified criteria. | |
3780 | See quick_symbol_functions.expand_symtabs_matching for details. */ | |
3781 | ||
3782 | void | |
14bc53a8 PA |
3783 | expand_symtabs_matching |
3784 | (gdb::function_view<expand_symtabs_file_matcher_ftype> file_matcher, | |
b5ec771e | 3785 | const lookup_name_info &lookup_name, |
14bc53a8 PA |
3786 | gdb::function_view<expand_symtabs_symbol_matcher_ftype> symbol_matcher, |
3787 | gdb::function_view<expand_symtabs_exp_notify_ftype> expansion_notify, | |
3788 | enum search_domain kind) | |
540c2971 DE |
3789 | { |
3790 | struct objfile *objfile; | |
3791 | ||
3792 | ALL_OBJFILES (objfile) | |
3793 | { | |
3794 | if (objfile->sf) | |
bb4142cf | 3795 | objfile->sf->qf->expand_symtabs_matching (objfile, file_matcher, |
b5ec771e | 3796 | lookup_name, |
276d885b | 3797 | symbol_matcher, |
14bc53a8 | 3798 | expansion_notify, kind); |
540c2971 DE |
3799 | } |
3800 | } | |
3801 | ||
3802 | /* Wrapper around the quick_symbol_functions map_symbol_filenames "method". | |
3803 | Map function FUN over every file. | |
3804 | See quick_symbol_functions.map_symbol_filenames for details. */ | |
3805 | ||
3806 | void | |
bb4142cf DE |
3807 | map_symbol_filenames (symbol_filename_ftype *fun, void *data, |
3808 | int need_fullname) | |
540c2971 DE |
3809 | { |
3810 | struct objfile *objfile; | |
3811 | ||
3812 | ALL_OBJFILES (objfile) | |
3813 | { | |
3814 | if (objfile->sf) | |
3815 | objfile->sf->qf->map_symbol_filenames (objfile, fun, data, | |
3816 | need_fullname); | |
3817 | } | |
3818 | } | |
3819 | ||
32fa66eb SM |
3820 | #if GDB_SELF_TEST |
3821 | ||
3822 | namespace selftests { | |
3823 | namespace filename_language { | |
3824 | ||
32fa66eb SM |
3825 | static void test_filename_language () |
3826 | { | |
3827 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3828 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3829 | |
3830 | /* Test deducing an unknown extension. */ | |
3831 | language lang = deduce_language_from_filename ("myfile.blah"); | |
3832 | SELF_CHECK (lang == language_unknown); | |
3833 | ||
3834 | /* Test deducing a known extension. */ | |
3835 | lang = deduce_language_from_filename ("myfile.c"); | |
3836 | SELF_CHECK (lang == language_c); | |
3837 | ||
3838 | /* Test adding a new extension using the internal API. */ | |
3839 | add_filename_language (".blah", language_pascal); | |
3840 | lang = deduce_language_from_filename ("myfile.blah"); | |
3841 | SELF_CHECK (lang == language_pascal); | |
3842 | } | |
3843 | ||
3844 | static void | |
3845 | test_set_ext_lang_command () | |
3846 | { | |
3847 | /* This test messes up the filename_language_table global. */ | |
593e3209 | 3848 | scoped_restore restore_flt = make_scoped_restore (&filename_language_table); |
32fa66eb SM |
3849 | |
3850 | /* Confirm that the .hello extension is not known. */ | |
3851 | language lang = deduce_language_from_filename ("cake.hello"); | |
3852 | SELF_CHECK (lang == language_unknown); | |
3853 | ||
3854 | /* Test adding a new extension using the CLI command. */ | |
3855 | gdb::unique_xmalloc_ptr<char> args_holder (xstrdup (".hello rust")); | |
3856 | ext_args = args_holder.get (); | |
3857 | set_ext_lang_command (NULL, 1, NULL); | |
3858 | ||
3859 | lang = deduce_language_from_filename ("cake.hello"); | |
3860 | SELF_CHECK (lang == language_rust); | |
3861 | ||
3862 | /* Test overriding an existing extension using the CLI command. */ | |
593e3209 | 3863 | int size_before = filename_language_table.size (); |
32fa66eb SM |
3864 | args_holder.reset (xstrdup (".hello pascal")); |
3865 | ext_args = args_holder.get (); | |
3866 | set_ext_lang_command (NULL, 1, NULL); | |
593e3209 | 3867 | int size_after = filename_language_table.size (); |
32fa66eb SM |
3868 | |
3869 | lang = deduce_language_from_filename ("cake.hello"); | |
3870 | SELF_CHECK (lang == language_pascal); | |
3871 | SELF_CHECK (size_before == size_after); | |
3872 | } | |
3873 | ||
3874 | } /* namespace filename_language */ | |
3875 | } /* namespace selftests */ | |
3876 | ||
3877 | #endif /* GDB_SELF_TEST */ | |
3878 | ||
c906108c | 3879 | void |
fba45db2 | 3880 | _initialize_symfile (void) |
c906108c SS |
3881 | { |
3882 | struct cmd_list_element *c; | |
c5aa993b | 3883 | |
76727919 | 3884 | gdb::observers::free_objfile.attach (symfile_free_objfile); |
76ad5e1e | 3885 | |
97cbe998 | 3886 | #define READNOW_READNEVER_HELP \ |
8ca2f0b9 TT |
3887 | "The '-readnow' option will cause GDB to read the entire symbol file\n\ |
3888 | immediately. This makes the command slower, but may make future operations\n\ | |
97cbe998 SDJ |
3889 | faster.\n\ |
3890 | The '-readnever' option will prevent GDB from reading the symbol file's\n\ | |
3891 | symbolic debug information." | |
8ca2f0b9 | 3892 | |
1a966eab AC |
3893 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3894 | Load symbol table from executable file FILE.\n\ | |
d4d429d5 PT |
3895 | Usage: symbol-file [-readnow | -readnever] [-o OFF] FILE\n\ |
3896 | OFF is an optional offset which is added to each section address.\n\ | |
c906108c | 3897 | The `file' command can also load symbol tables, as well as setting the file\n\ |
97cbe998 | 3898 | to execute.\n" READNOW_READNEVER_HELP), &cmdlist); |
5ba2abeb | 3899 | set_cmd_completer (c, filename_completer); |
c906108c | 3900 | |
1a966eab | 3901 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3902 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
291f9a96 | 3903 | Usage: add-symbol-file FILE [-readnow | -readnever] [-o OFF] [ADDR] \ |
ed6dfe51 | 3904 | [-s SECT-NAME SECT-ADDR]...\n\ |
02ca603a TT |
3905 | ADDR is the starting address of the file's text.\n\ |
3906 | Each '-s' argument provides a section name and address, and\n\ | |
db162d44 | 3907 | should be specified if the data and bss segments are not contiguous\n\ |
291f9a96 PT |
3908 | with the text. SECT-NAME is a section name to be loaded at SECT-ADDR.\n\ |
3909 | OFF is an optional offset which is added to the default load addresses\n\ | |
3910 | of all sections for which no other address was specified.\n" | |
97cbe998 | 3911 | READNOW_READNEVER_HELP), |
c906108c | 3912 | &cmdlist); |
5ba2abeb | 3913 | set_cmd_completer (c, filename_completer); |
c906108c | 3914 | |
63644780 NB |
3915 | c = add_cmd ("remove-symbol-file", class_files, |
3916 | remove_symbol_file_command, _("\ | |
3917 | Remove a symbol file added via the add-symbol-file command.\n\ | |
3918 | Usage: remove-symbol-file FILENAME\n\ | |
3919 | remove-symbol-file -a ADDRESS\n\ | |
3920 | The file to remove can be identified by its filename or by an address\n\ | |
3921 | that lies within the boundaries of this symbol file in memory."), | |
3922 | &cmdlist); | |
3923 | ||
1a966eab AC |
3924 | c = add_cmd ("load", class_files, load_command, _("\ |
3925 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd | 3926 | for access from GDB.\n\ |
8ca2f0b9 | 3927 | Usage: load [FILE] [OFFSET]\n\ |
5cf30ebf LM |
3928 | An optional load OFFSET may also be given as a literal address.\n\ |
3929 | When OFFSET is provided, FILE must also be provided. FILE can be provided\n\ | |
8ca2f0b9 | 3930 | on its own."), &cmdlist); |
5ba2abeb | 3931 | set_cmd_completer (c, filename_completer); |
c906108c | 3932 | |
c5aa993b | 3933 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3934 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3935 | "overlay ", 0, &cmdlist); |
3936 | ||
3937 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3938 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3939 | ||
c5aa993b | 3940 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3941 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3942 | |
c5aa993b | 3943 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3944 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3945 | |
c5aa993b | 3946 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3947 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3948 | |
c5aa993b | 3949 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3950 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3951 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3952 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3953 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3954 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3955 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3956 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3957 | |
3958 | /* Filename extension to source language lookup table: */ | |
26c41df3 AC |
3959 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3960 | &ext_args, _("\ | |
3961 | Set mapping between filename extension and source language."), _("\ | |
3962 | Show mapping between filename extension and source language."), _("\ | |
3963 | Usage: set extension-language .foo bar"), | |
3964 | set_ext_lang_command, | |
920d2a44 | 3965 | show_ext_args, |
26c41df3 | 3966 | &setlist, &showlist); |
c906108c | 3967 | |
c5aa993b | 3968 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3969 | _("All filename extensions associated with a source language.")); |
917317f4 | 3970 | |
525226b5 AC |
3971 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3972 | &debug_file_directory, _("\ | |
24ddea62 JK |
3973 | Set the directories where separate debug symbols are searched for."), _("\ |
3974 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3975 | Separate debug symbols are first searched for in the same\n\ |
3976 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3977 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3978 | each global debug-file-directory component prepended."), |
525226b5 | 3979 | NULL, |
920d2a44 | 3980 | show_debug_file_directory, |
525226b5 | 3981 | &setlist, &showlist); |
770e7fc7 DE |
3982 | |
3983 | add_setshow_enum_cmd ("symbol-loading", no_class, | |
3984 | print_symbol_loading_enums, &print_symbol_loading, | |
3985 | _("\ | |
3986 | Set printing of symbol loading messages."), _("\ | |
3987 | Show printing of symbol loading messages."), _("\ | |
3988 | off == turn all messages off\n\ | |
3989 | brief == print messages for the executable,\n\ | |
3990 | and brief messages for shared libraries\n\ | |
3991 | full == print messages for the executable,\n\ | |
3992 | and messages for each shared library."), | |
3993 | NULL, | |
3994 | NULL, | |
3995 | &setprintlist, &showprintlist); | |
c4dcb155 SM |
3996 | |
3997 | add_setshow_boolean_cmd ("separate-debug-file", no_class, | |
3998 | &separate_debug_file_debug, _("\ | |
3999 | Set printing of separate debug info file search debug."), _("\ | |
4000 | Show printing of separate debug info file search debug."), _("\ | |
4001 | When on, GDB prints the searched locations while looking for separate debug \ | |
4002 | info files."), NULL, NULL, &setdebuglist, &showdebuglist); | |
32fa66eb SM |
4003 | |
4004 | #if GDB_SELF_TEST | |
4005 | selftests::register_test | |
4006 | ("filename_language", selftests::filename_language::test_filename_language); | |
4007 | selftests::register_test | |
4008 | ("set_ext_lang_command", | |
4009 | selftests::filename_language::test_set_ext_lang_command); | |
4010 | #endif | |
c906108c | 4011 | } |