Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
4c38e0a4 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 |
777ea8f1 | 5 | Free Software Foundation, Inc. |
8926118c | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support, using pieces from other GDB modules. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
e17c207e | 25 | #include "arch-utils.h" |
086df311 | 26 | #include "bfdlink.h" |
c906108c SS |
27 | #include "symtab.h" |
28 | #include "gdbtypes.h" | |
29 | #include "gdbcore.h" | |
30 | #include "frame.h" | |
31 | #include "target.h" | |
32 | #include "value.h" | |
33 | #include "symfile.h" | |
34 | #include "objfiles.h" | |
0378c332 | 35 | #include "source.h" |
c906108c SS |
36 | #include "gdbcmd.h" |
37 | #include "breakpoint.h" | |
38 | #include "language.h" | |
39 | #include "complaints.h" | |
40 | #include "demangle.h" | |
fb14de7b UW |
41 | #include "inferior.h" |
42 | #include "regcache.h" | |
5b5d99cf | 43 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 44 | #include "gdb-stabs.h" |
04ea0df1 | 45 | #include "gdb_obstack.h" |
d75b5104 | 46 | #include "completer.h" |
af5f3db6 | 47 | #include "bcache.h" |
2de7ced7 | 48 | #include "hashtab.h" |
dbda9972 | 49 | #include "readline/readline.h" |
7e8580c1 | 50 | #include "gdb_assert.h" |
fe898f56 | 51 | #include "block.h" |
ea53e89f | 52 | #include "observer.h" |
c1bd25fd | 53 | #include "exec.h" |
9bdcbae7 | 54 | #include "parser-defs.h" |
8756216b | 55 | #include "varobj.h" |
77069918 | 56 | #include "elf-bfd.h" |
e85a822c | 57 | #include "solib.h" |
f1838a98 | 58 | #include "remote.h" |
c906108c | 59 | |
c906108c SS |
60 | #include <sys/types.h> |
61 | #include <fcntl.h> | |
62 | #include "gdb_string.h" | |
63 | #include "gdb_stat.h" | |
64 | #include <ctype.h> | |
65 | #include <time.h> | |
2b71414d | 66 | #include <sys/time.h> |
c906108c | 67 | |
c906108c | 68 | |
9a4105ab AC |
69 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
70 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
71 | unsigned long section_sent, |
72 | unsigned long section_size, | |
73 | unsigned long total_sent, | |
c2d11a7d | 74 | unsigned long total_size); |
769d7dc4 AC |
75 | void (*deprecated_pre_add_symbol_hook) (const char *); |
76 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 77 | |
74b7792f AC |
78 | static void clear_symtab_users_cleanup (void *ignore); |
79 | ||
c906108c | 80 | /* Global variables owned by this file */ |
c5aa993b | 81 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 82 | |
c906108c SS |
83 | /* External variables and functions referenced. */ |
84 | ||
a14ed312 | 85 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
86 | |
87 | /* Functions this file defines */ | |
88 | ||
89 | #if 0 | |
a14ed312 KB |
90 | static int simple_read_overlay_region_table (void); |
91 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
92 | #endif |
93 | ||
a14ed312 | 94 | static void load_command (char *, int); |
c906108c | 95 | |
d7db6da9 FN |
96 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
97 | ||
a14ed312 | 98 | static void add_symbol_file_command (char *, int); |
c906108c | 99 | |
a14ed312 | 100 | bfd *symfile_bfd_open (char *); |
c906108c | 101 | |
0e931cf0 JB |
102 | int get_section_index (struct objfile *, char *); |
103 | ||
31d99776 | 104 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 105 | |
a14ed312 | 106 | static void decrement_reading_symtab (void *); |
c906108c | 107 | |
a14ed312 | 108 | static void overlay_invalidate_all (void); |
c906108c | 109 | |
a14ed312 | 110 | void list_overlays_command (char *, int); |
c906108c | 111 | |
a14ed312 | 112 | void map_overlay_command (char *, int); |
c906108c | 113 | |
a14ed312 | 114 | void unmap_overlay_command (char *, int); |
c906108c | 115 | |
a14ed312 | 116 | static void overlay_auto_command (char *, int); |
c906108c | 117 | |
a14ed312 | 118 | static void overlay_manual_command (char *, int); |
c906108c | 119 | |
a14ed312 | 120 | static void overlay_off_command (char *, int); |
c906108c | 121 | |
a14ed312 | 122 | static void overlay_load_command (char *, int); |
c906108c | 123 | |
a14ed312 | 124 | static void overlay_command (char *, int); |
c906108c | 125 | |
a14ed312 | 126 | static void simple_free_overlay_table (void); |
c906108c | 127 | |
e17a4113 UW |
128 | static void read_target_long_array (CORE_ADDR, unsigned int *, int, int, |
129 | enum bfd_endian); | |
c906108c | 130 | |
a14ed312 | 131 | static int simple_read_overlay_table (void); |
c906108c | 132 | |
a14ed312 | 133 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 134 | |
a14ed312 | 135 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 136 | |
a14ed312 | 137 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 138 | |
a14ed312 | 139 | static void init_filename_language_table (void); |
392a587b | 140 | |
31d99776 DJ |
141 | static void symfile_find_segment_sections (struct objfile *objfile); |
142 | ||
a14ed312 | 143 | void _initialize_symfile (void); |
c906108c SS |
144 | |
145 | /* List of all available sym_fns. On gdb startup, each object file reader | |
146 | calls add_symtab_fns() to register information on each format it is | |
147 | prepared to read. */ | |
148 | ||
149 | static struct sym_fns *symtab_fns = NULL; | |
150 | ||
151 | /* Flag for whether user will be reloading symbols multiple times. | |
152 | Defaults to ON for VxWorks, otherwise OFF. */ | |
153 | ||
154 | #ifdef SYMBOL_RELOADING_DEFAULT | |
155 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
156 | #else | |
157 | int symbol_reloading = 0; | |
158 | #endif | |
920d2a44 AC |
159 | static void |
160 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
161 | struct cmd_list_element *c, const char *value) | |
162 | { | |
163 | fprintf_filtered (file, _("\ | |
164 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
165 | value); | |
166 | } | |
167 | ||
b7209cb4 FF |
168 | /* If non-zero, shared library symbols will be added automatically |
169 | when the inferior is created, new libraries are loaded, or when | |
170 | attaching to the inferior. This is almost always what users will | |
171 | want to have happen; but for very large programs, the startup time | |
172 | will be excessive, and so if this is a problem, the user can clear | |
173 | this flag and then add the shared library symbols as needed. Note | |
174 | that there is a potential for confusion, since if the shared | |
c906108c | 175 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 176 | report all the functions that are actually present. */ |
c906108c SS |
177 | |
178 | int auto_solib_add = 1; | |
b7209cb4 FF |
179 | |
180 | /* For systems that support it, a threshold size in megabytes. If | |
181 | automatically adding a new library's symbol table to those already | |
182 | known to the debugger would cause the total shared library symbol | |
183 | size to exceed this threshhold, then the shlib's symbols are not | |
184 | added. The threshold is ignored if the user explicitly asks for a | |
185 | shlib to be added, such as when using the "sharedlibrary" | |
186 | command. */ | |
187 | ||
188 | int auto_solib_limit; | |
c906108c | 189 | \f |
c5aa993b | 190 | |
0fe19209 DC |
191 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
192 | for the comparison. */ | |
c906108c SS |
193 | |
194 | static int | |
0cd64fe2 | 195 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 196 | { |
0fe19209 DC |
197 | struct partial_symbol *const *s1 = s1p; |
198 | struct partial_symbol *const *s2 = s2p; | |
199 | ||
4725b721 PH |
200 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
201 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
202 | } |
203 | ||
204 | void | |
fba45db2 | 205 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
206 | { |
207 | /* Sort the global list; don't sort the static list */ | |
208 | ||
c5aa993b JM |
209 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
210 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
211 | compare_psymbols); |
212 | } | |
213 | ||
c906108c SS |
214 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
215 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
216 | Note that the string at PTR does not have to be null terminated, I.E. it | |
217 | may be part of a larger string and we are only saving a substring. */ | |
218 | ||
219 | char * | |
63ca651f | 220 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 221 | { |
52f0bd74 | 222 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
223 | /* Open-coded memcpy--saves function call time. These strings are usually |
224 | short. FIXME: Is this really still true with a compiler that can | |
225 | inline memcpy? */ | |
226 | { | |
aa1ee363 AC |
227 | const char *p1 = ptr; |
228 | char *p2 = p; | |
63ca651f | 229 | const char *end = ptr + size; |
c906108c SS |
230 | while (p1 != end) |
231 | *p2++ = *p1++; | |
232 | } | |
233 | p[size] = 0; | |
234 | return p; | |
235 | } | |
236 | ||
237 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
238 | in the obstack pointed to by OBSTACKP. */ | |
239 | ||
240 | char * | |
fba45db2 KB |
241 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
242 | const char *s3) | |
c906108c | 243 | { |
52f0bd74 AC |
244 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
245 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
246 | strcpy (val, s1); |
247 | strcat (val, s2); | |
248 | strcat (val, s3); | |
249 | return val; | |
250 | } | |
251 | ||
252 | /* True if we are nested inside psymtab_to_symtab. */ | |
253 | ||
254 | int currently_reading_symtab = 0; | |
255 | ||
256 | static void | |
fba45db2 | 257 | decrement_reading_symtab (void *dummy) |
c906108c SS |
258 | { |
259 | currently_reading_symtab--; | |
260 | } | |
261 | ||
262 | /* Get the symbol table that corresponds to a partial_symtab. | |
263 | This is fast after the first time you do it. In fact, there | |
264 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
265 | case inline. */ | |
266 | ||
267 | struct symtab * | |
aa1ee363 | 268 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
269 | { |
270 | /* If it's been looked up before, return it. */ | |
271 | if (pst->symtab) | |
272 | return pst->symtab; | |
273 | ||
274 | /* If it has not yet been read in, read it. */ | |
275 | if (!pst->readin) | |
c5aa993b | 276 | { |
c906108c SS |
277 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
278 | currently_reading_symtab++; | |
279 | (*pst->read_symtab) (pst); | |
280 | do_cleanups (back_to); | |
281 | } | |
282 | ||
283 | return pst->symtab; | |
284 | } | |
285 | ||
5417f6dc RM |
286 | /* Remember the lowest-addressed loadable section we've seen. |
287 | This function is called via bfd_map_over_sections. | |
c906108c SS |
288 | |
289 | In case of equal vmas, the section with the largest size becomes the | |
290 | lowest-addressed loadable section. | |
291 | ||
292 | If the vmas and sizes are equal, the last section is considered the | |
293 | lowest-addressed loadable section. */ | |
294 | ||
295 | void | |
4efb68b1 | 296 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 297 | { |
c5aa993b | 298 | asection **lowest = (asection **) obj; |
c906108c SS |
299 | |
300 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
301 | return; | |
302 | if (!*lowest) | |
303 | *lowest = sect; /* First loadable section */ | |
304 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
305 | *lowest = sect; /* A lower loadable section */ | |
306 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
307 | && (bfd_section_size (abfd, (*lowest)) | |
308 | <= bfd_section_size (abfd, sect))) | |
309 | *lowest = sect; | |
310 | } | |
311 | ||
a39a16c4 MM |
312 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
313 | ||
314 | struct section_addr_info * | |
315 | alloc_section_addr_info (size_t num_sections) | |
316 | { | |
317 | struct section_addr_info *sap; | |
318 | size_t size; | |
319 | ||
320 | size = (sizeof (struct section_addr_info) | |
321 | + sizeof (struct other_sections) * (num_sections - 1)); | |
322 | sap = (struct section_addr_info *) xmalloc (size); | |
323 | memset (sap, 0, size); | |
324 | sap->num_sections = num_sections; | |
325 | ||
326 | return sap; | |
327 | } | |
62557bbc KB |
328 | |
329 | /* Build (allocate and populate) a section_addr_info struct from | |
330 | an existing section table. */ | |
331 | ||
332 | extern struct section_addr_info * | |
0542c86d PA |
333 | build_section_addr_info_from_section_table (const struct target_section *start, |
334 | const struct target_section *end) | |
62557bbc KB |
335 | { |
336 | struct section_addr_info *sap; | |
0542c86d | 337 | const struct target_section *stp; |
62557bbc KB |
338 | int oidx; |
339 | ||
a39a16c4 | 340 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
341 | |
342 | for (stp = start, oidx = 0; stp != end; stp++) | |
343 | { | |
5417f6dc | 344 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 345 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 346 | && oidx < end - start) |
62557bbc KB |
347 | { |
348 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 349 | sap->other[oidx].name |
fbd35540 | 350 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
351 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
352 | oidx++; | |
353 | } | |
354 | } | |
355 | ||
356 | return sap; | |
357 | } | |
358 | ||
089b4803 TG |
359 | /* Create a section_addr_info from section offsets in OBJFILE. */ |
360 | ||
567995e1 | 361 | struct section_addr_info * |
089b4803 TG |
362 | build_section_addr_info_from_objfile (const struct objfile *objfile) |
363 | { | |
364 | struct section_addr_info *sap; | |
365 | int i; | |
366 | struct bfd_section *sec; | |
567995e1 JK |
367 | int addr_bit = gdbarch_addr_bit (objfile->gdbarch); |
368 | CORE_ADDR mask = CORE_ADDR_MAX; | |
369 | ||
370 | if (addr_bit < (sizeof (CORE_ADDR) * HOST_CHAR_BIT)) | |
371 | mask = ((CORE_ADDR) 1 << addr_bit) - 1; | |
089b4803 TG |
372 | |
373 | sap = alloc_section_addr_info (objfile->num_sections); | |
012836ea JK |
374 | for (i = 0, sec = objfile->obfd->sections; sec != NULL; sec = sec->next) |
375 | if (bfd_get_section_flags (objfile->obfd, sec) & (SEC_ALLOC | SEC_LOAD)) | |
376 | { | |
377 | sap->other[i].addr = (bfd_get_section_vma (objfile->obfd, sec) | |
378 | + objfile->section_offsets->offsets[i]) & mask; | |
379 | sap->other[i].name = xstrdup (bfd_get_section_name (objfile->obfd, | |
380 | sec)); | |
381 | sap->other[i].sectindex = sec->index; | |
382 | i++; | |
383 | } | |
089b4803 TG |
384 | return sap; |
385 | } | |
386 | ||
62557bbc KB |
387 | |
388 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
389 | ||
390 | extern void | |
391 | free_section_addr_info (struct section_addr_info *sap) | |
392 | { | |
393 | int idx; | |
394 | ||
a39a16c4 | 395 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 396 | if (sap->other[idx].name) |
b8c9b27d KB |
397 | xfree (sap->other[idx].name); |
398 | xfree (sap); | |
62557bbc KB |
399 | } |
400 | ||
401 | ||
e8289572 JB |
402 | /* Initialize OBJFILE's sect_index_* members. */ |
403 | static void | |
404 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 405 | { |
e8289572 | 406 | asection *sect; |
c906108c | 407 | int i; |
5417f6dc | 408 | |
b8fbeb18 | 409 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 410 | if (sect) |
b8fbeb18 EZ |
411 | objfile->sect_index_text = sect->index; |
412 | ||
413 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 414 | if (sect) |
b8fbeb18 EZ |
415 | objfile->sect_index_data = sect->index; |
416 | ||
417 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 418 | if (sect) |
b8fbeb18 EZ |
419 | objfile->sect_index_bss = sect->index; |
420 | ||
421 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 422 | if (sect) |
b8fbeb18 EZ |
423 | objfile->sect_index_rodata = sect->index; |
424 | ||
bbcd32ad FF |
425 | /* This is where things get really weird... We MUST have valid |
426 | indices for the various sect_index_* members or gdb will abort. | |
427 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
428 | accomodate that. First, check for a file with the standard |
429 | one or two segments. */ | |
430 | ||
431 | symfile_find_segment_sections (objfile); | |
432 | ||
433 | /* Except when explicitly adding symbol files at some address, | |
434 | section_offsets contains nothing but zeros, so it doesn't matter | |
435 | which slot in section_offsets the individual sect_index_* members | |
436 | index into. So if they are all zero, it is safe to just point | |
437 | all the currently uninitialized indices to the first slot. But | |
438 | beware: if this is the main executable, it may be relocated | |
439 | later, e.g. by the remote qOffsets packet, and then this will | |
440 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
441 | |
442 | for (i = 0; i < objfile->num_sections; i++) | |
443 | { | |
444 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
445 | { | |
446 | break; | |
447 | } | |
448 | } | |
449 | if (i == objfile->num_sections) | |
450 | { | |
451 | if (objfile->sect_index_text == -1) | |
452 | objfile->sect_index_text = 0; | |
453 | if (objfile->sect_index_data == -1) | |
454 | objfile->sect_index_data = 0; | |
455 | if (objfile->sect_index_bss == -1) | |
456 | objfile->sect_index_bss = 0; | |
457 | if (objfile->sect_index_rodata == -1) | |
458 | objfile->sect_index_rodata = 0; | |
459 | } | |
b8fbeb18 | 460 | } |
c906108c | 461 | |
c1bd25fd DJ |
462 | /* The arguments to place_section. */ |
463 | ||
464 | struct place_section_arg | |
465 | { | |
466 | struct section_offsets *offsets; | |
467 | CORE_ADDR lowest; | |
468 | }; | |
469 | ||
470 | /* Find a unique offset to use for loadable section SECT if | |
471 | the user did not provide an offset. */ | |
472 | ||
2c0b251b | 473 | static void |
c1bd25fd DJ |
474 | place_section (bfd *abfd, asection *sect, void *obj) |
475 | { | |
476 | struct place_section_arg *arg = obj; | |
477 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
478 | int done; | |
3bd72c6f | 479 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 480 | |
2711e456 DJ |
481 | /* We are only interested in allocated sections. */ |
482 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
483 | return; |
484 | ||
485 | /* If the user specified an offset, honor it. */ | |
486 | if (offsets[sect->index] != 0) | |
487 | return; | |
488 | ||
489 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
490 | start_addr = (arg->lowest + align - 1) & -align; |
491 | ||
c1bd25fd DJ |
492 | do { |
493 | asection *cur_sec; | |
c1bd25fd | 494 | |
c1bd25fd DJ |
495 | done = 1; |
496 | ||
497 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
498 | { | |
499 | int indx = cur_sec->index; | |
500 | CORE_ADDR cur_offset; | |
501 | ||
502 | /* We don't need to compare against ourself. */ | |
503 | if (cur_sec == sect) | |
504 | continue; | |
505 | ||
2711e456 DJ |
506 | /* We can only conflict with allocated sections. */ |
507 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
508 | continue; |
509 | ||
510 | /* If the section offset is 0, either the section has not been placed | |
511 | yet, or it was the lowest section placed (in which case LOWEST | |
512 | will be past its end). */ | |
513 | if (offsets[indx] == 0) | |
514 | continue; | |
515 | ||
516 | /* If this section would overlap us, then we must move up. */ | |
517 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
518 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
519 | { | |
520 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
521 | start_addr = (start_addr + align - 1) & -align; | |
522 | done = 0; | |
3bd72c6f | 523 | break; |
c1bd25fd DJ |
524 | } |
525 | ||
526 | /* Otherwise, we appear to be OK. So far. */ | |
527 | } | |
528 | } | |
529 | while (!done); | |
530 | ||
531 | offsets[sect->index] = start_addr; | |
532 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 533 | } |
e8289572 | 534 | |
75242ef4 JK |
535 | /* Store struct section_addr_info as prepared (made relative and with SECTINDEX |
536 | filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS | |
537 | entries. */ | |
e8289572 JB |
538 | |
539 | void | |
75242ef4 JK |
540 | relative_addr_info_to_section_offsets (struct section_offsets *section_offsets, |
541 | int num_sections, | |
542 | struct section_addr_info *addrs) | |
e8289572 JB |
543 | { |
544 | int i; | |
545 | ||
75242ef4 | 546 | memset (section_offsets, 0, SIZEOF_N_SECTION_OFFSETS (num_sections)); |
e8289572 | 547 | |
75242ef4 | 548 | /* Now calculate offsets for section that were specified by the caller. */ |
a39a16c4 | 549 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 | 550 | { |
75242ef4 | 551 | struct other_sections *osp; |
e8289572 | 552 | |
75242ef4 | 553 | osp = &addrs->other[i]; |
e8289572 JB |
554 | if (osp->addr == 0) |
555 | continue; | |
556 | ||
557 | /* Record all sections in offsets */ | |
558 | /* The section_offsets in the objfile are here filled in using | |
559 | the BFD index. */ | |
75242ef4 JK |
560 | section_offsets->offsets[osp->sectindex] = osp->addr; |
561 | } | |
562 | } | |
563 | ||
564 | /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in | |
565 | also SECTINDEXes there. */ | |
566 | ||
567 | void | |
568 | addr_info_make_relative (struct section_addr_info *addrs, bfd *abfd) | |
569 | { | |
570 | asection *lower_sect; | |
571 | asection *sect; | |
572 | CORE_ADDR lower_offset; | |
573 | int i; | |
574 | ||
575 | /* Find lowest loadable section to be used as starting point for | |
e76ab67f DJ |
576 | continguous sections. */ |
577 | lower_sect = NULL; | |
578 | bfd_map_over_sections (abfd, find_lowest_section, &lower_sect); | |
75242ef4 JK |
579 | if (lower_sect == NULL) |
580 | { | |
581 | warning (_("no loadable sections found in added symbol-file %s"), | |
582 | bfd_get_filename (abfd)); | |
583 | lower_offset = 0; | |
e8289572 | 584 | } |
75242ef4 JK |
585 | else |
586 | lower_offset = bfd_section_vma (bfd_get_filename (abfd), lower_sect); | |
587 | ||
588 | /* Calculate offsets for the loadable sections. | |
589 | FIXME! Sections must be in order of increasing loadable section | |
590 | so that contiguous sections can use the lower-offset!!! | |
591 | ||
592 | Adjust offsets if the segments are not contiguous. | |
593 | If the section is contiguous, its offset should be set to | |
594 | the offset of the highest loadable section lower than it | |
595 | (the loadable section directly below it in memory). | |
596 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
597 | ||
598 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) | |
599 | { | |
600 | if (addrs->other[i].addr != 0) | |
601 | { | |
602 | sect = bfd_get_section_by_name (abfd, addrs->other[i].name); | |
603 | if (sect) | |
604 | { | |
605 | addrs->other[i].addr -= bfd_section_vma (abfd, sect); | |
606 | lower_offset = addrs->other[i].addr; | |
607 | /* This is the index used by BFD. */ | |
608 | addrs->other[i].sectindex = sect->index; | |
609 | } | |
610 | else | |
611 | { | |
612 | warning (_("section %s not found in %s"), addrs->other[i].name, | |
613 | bfd_get_filename (abfd)); | |
614 | addrs->other[i].addr = 0; | |
615 | } | |
616 | } | |
617 | else | |
618 | addrs->other[i].addr = lower_offset; | |
619 | } | |
620 | } | |
621 | ||
622 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
623 | of how to represent it for fast symbol reading. This is the default | |
624 | version of the sym_fns.sym_offsets function for symbol readers that | |
625 | don't need to do anything special. It allocates a section_offsets table | |
626 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
627 | ||
628 | void | |
629 | default_symfile_offsets (struct objfile *objfile, | |
630 | struct section_addr_info *addrs) | |
631 | { | |
632 | objfile->num_sections = bfd_count_sections (objfile->obfd); | |
633 | objfile->section_offsets = (struct section_offsets *) | |
634 | obstack_alloc (&objfile->objfile_obstack, | |
635 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); | |
636 | relative_addr_info_to_section_offsets (objfile->section_offsets, | |
637 | objfile->num_sections, addrs); | |
e8289572 | 638 | |
c1bd25fd DJ |
639 | /* For relocatable files, all loadable sections will start at zero. |
640 | The zero is meaningless, so try to pick arbitrary addresses such | |
641 | that no loadable sections overlap. This algorithm is quadratic, | |
642 | but the number of sections in a single object file is generally | |
643 | small. */ | |
644 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
645 | { | |
646 | struct place_section_arg arg; | |
2711e456 DJ |
647 | bfd *abfd = objfile->obfd; |
648 | asection *cur_sec; | |
649 | CORE_ADDR lowest = 0; | |
650 | ||
651 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
652 | /* We do not expect this to happen; just skip this step if the | |
653 | relocatable file has a section with an assigned VMA. */ | |
654 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
655 | break; | |
656 | ||
657 | if (cur_sec == NULL) | |
658 | { | |
659 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
660 | ||
661 | /* Pick non-overlapping offsets for sections the user did not | |
662 | place explicitly. */ | |
663 | arg.offsets = objfile->section_offsets; | |
664 | arg.lowest = 0; | |
665 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
666 | ||
667 | /* Correctly filling in the section offsets is not quite | |
668 | enough. Relocatable files have two properties that | |
669 | (most) shared objects do not: | |
670 | ||
671 | - Their debug information will contain relocations. Some | |
672 | shared libraries do also, but many do not, so this can not | |
673 | be assumed. | |
674 | ||
675 | - If there are multiple code sections they will be loaded | |
676 | at different relative addresses in memory than they are | |
677 | in the objfile, since all sections in the file will start | |
678 | at address zero. | |
679 | ||
680 | Because GDB has very limited ability to map from an | |
681 | address in debug info to the correct code section, | |
682 | it relies on adding SECT_OFF_TEXT to things which might be | |
683 | code. If we clear all the section offsets, and set the | |
684 | section VMAs instead, then symfile_relocate_debug_section | |
685 | will return meaningful debug information pointing at the | |
686 | correct sections. | |
687 | ||
688 | GDB has too many different data structures for section | |
689 | addresses - a bfd, objfile, and so_list all have section | |
690 | tables, as does exec_ops. Some of these could probably | |
691 | be eliminated. */ | |
692 | ||
693 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
694 | cur_sec = cur_sec->next) | |
695 | { | |
696 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
697 | continue; | |
698 | ||
699 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
700 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
701 | offsets[cur_sec->index]); | |
2711e456 DJ |
702 | offsets[cur_sec->index] = 0; |
703 | } | |
704 | } | |
c1bd25fd DJ |
705 | } |
706 | ||
e8289572 JB |
707 | /* Remember the bfd indexes for the .text, .data, .bss and |
708 | .rodata sections. */ | |
709 | init_objfile_sect_indices (objfile); | |
710 | } | |
711 | ||
712 | ||
31d99776 DJ |
713 | /* Divide the file into segments, which are individual relocatable units. |
714 | This is the default version of the sym_fns.sym_segments function for | |
715 | symbol readers that do not have an explicit representation of segments. | |
716 | It assumes that object files do not have segments, and fully linked | |
717 | files have a single segment. */ | |
718 | ||
719 | struct symfile_segment_data * | |
720 | default_symfile_segments (bfd *abfd) | |
721 | { | |
722 | int num_sections, i; | |
723 | asection *sect; | |
724 | struct symfile_segment_data *data; | |
725 | CORE_ADDR low, high; | |
726 | ||
727 | /* Relocatable files contain enough information to position each | |
728 | loadable section independently; they should not be relocated | |
729 | in segments. */ | |
730 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
731 | return NULL; | |
732 | ||
733 | /* Make sure there is at least one loadable section in the file. */ | |
734 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
735 | { | |
736 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
737 | continue; | |
738 | ||
739 | break; | |
740 | } | |
741 | if (sect == NULL) | |
742 | return NULL; | |
743 | ||
744 | low = bfd_get_section_vma (abfd, sect); | |
745 | high = low + bfd_get_section_size (sect); | |
746 | ||
747 | data = XZALLOC (struct symfile_segment_data); | |
748 | data->num_segments = 1; | |
749 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
750 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
751 | ||
752 | num_sections = bfd_count_sections (abfd); | |
753 | data->segment_info = XCALLOC (num_sections, int); | |
754 | ||
755 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
756 | { | |
757 | CORE_ADDR vma; | |
758 | ||
759 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
760 | continue; | |
761 | ||
762 | vma = bfd_get_section_vma (abfd, sect); | |
763 | if (vma < low) | |
764 | low = vma; | |
765 | if (vma + bfd_get_section_size (sect) > high) | |
766 | high = vma + bfd_get_section_size (sect); | |
767 | ||
768 | data->segment_info[i] = 1; | |
769 | } | |
770 | ||
771 | data->segment_bases[0] = low; | |
772 | data->segment_sizes[0] = high - low; | |
773 | ||
774 | return data; | |
775 | } | |
776 | ||
c906108c SS |
777 | /* Process a symbol file, as either the main file or as a dynamically |
778 | loaded file. | |
779 | ||
96baa820 JM |
780 | OBJFILE is where the symbols are to be read from. |
781 | ||
7e8580c1 JB |
782 | ADDRS is the list of section load addresses. If the user has given |
783 | an 'add-symbol-file' command, then this is the list of offsets and | |
784 | addresses he or she provided as arguments to the command; or, if | |
785 | we're handling a shared library, these are the actual addresses the | |
786 | sections are loaded at, according to the inferior's dynamic linker | |
787 | (as gleaned by GDB's shared library code). We convert each address | |
788 | into an offset from the section VMA's as it appears in the object | |
789 | file, and then call the file's sym_offsets function to convert this | |
790 | into a format-specific offset table --- a `struct section_offsets'. | |
791 | If ADDRS is non-zero, OFFSETS must be zero. | |
792 | ||
793 | OFFSETS is a table of section offsets already in the right | |
794 | format-specific representation. NUM_OFFSETS is the number of | |
795 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
796 | assume this is the proper table the call to sym_offsets described | |
797 | above would produce. Instead of calling sym_offsets, we just dump | |
798 | it right into objfile->section_offsets. (When we're re-reading | |
799 | symbols from an objfile, we don't have the original load address | |
800 | list any more; all we have is the section offset table.) If | |
801 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 | 802 | |
7eedccfa PP |
803 | ADD_FLAGS encodes verbosity level, whether this is main symbol or |
804 | an extra symbol file such as dynamically loaded code, and wether | |
805 | breakpoint reset should be deferred. */ | |
c906108c SS |
806 | |
807 | void | |
7e8580c1 JB |
808 | syms_from_objfile (struct objfile *objfile, |
809 | struct section_addr_info *addrs, | |
810 | struct section_offsets *offsets, | |
811 | int num_offsets, | |
7eedccfa | 812 | int add_flags) |
c906108c | 813 | { |
a39a16c4 | 814 | struct section_addr_info *local_addr = NULL; |
c906108c | 815 | struct cleanup *old_chain; |
7eedccfa | 816 | const int mainline = add_flags & SYMFILE_MAINLINE; |
2acceee2 | 817 | |
7e8580c1 | 818 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 819 | |
c906108c | 820 | init_entry_point_info (objfile); |
31d99776 | 821 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 822 | |
75245b24 MS |
823 | if (objfile->sf == NULL) |
824 | return; /* No symbols. */ | |
825 | ||
c906108c SS |
826 | /* Make sure that partially constructed symbol tables will be cleaned up |
827 | if an error occurs during symbol reading. */ | |
74b7792f | 828 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 829 | |
a39a16c4 MM |
830 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
831 | list. We now establish the convention that an addr of zero means | |
832 | no load address was specified. */ | |
833 | if (! addrs && ! offsets) | |
834 | { | |
5417f6dc | 835 | local_addr |
a39a16c4 MM |
836 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
837 | make_cleanup (xfree, local_addr); | |
838 | addrs = local_addr; | |
839 | } | |
840 | ||
841 | /* Now either addrs or offsets is non-zero. */ | |
842 | ||
c5aa993b | 843 | if (mainline) |
c906108c SS |
844 | { |
845 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 846 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 847 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
848 | |
849 | /* Since no error yet, throw away the old symbol table. */ | |
850 | ||
851 | if (symfile_objfile != NULL) | |
852 | { | |
853 | free_objfile (symfile_objfile); | |
adb7f338 | 854 | gdb_assert (symfile_objfile == NULL); |
c906108c SS |
855 | } |
856 | ||
857 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
858 | If the user wants to get rid of them, they should do "symbol-file" |
859 | without arguments first. Not sure this is the best behavior | |
860 | (PR 2207). */ | |
c906108c | 861 | |
c5aa993b | 862 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
863 | } |
864 | ||
865 | /* Convert addr into an offset rather than an absolute address. | |
866 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 867 | and assume that <addr> is where that got loaded. |
c906108c | 868 | |
53a5351d JM |
869 | We no longer warn if the lowest section is not a text segment (as |
870 | happens for the PA64 port. */ | |
0d15807d | 871 | if (addrs && addrs->other[0].name) |
75242ef4 | 872 | addr_info_make_relative (addrs, objfile->obfd); |
c906108c SS |
873 | |
874 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
875 | appear for this new file, and record how verbose to be, then do the | |
876 | initial symbol reading for this file. */ | |
877 | ||
c5aa993b | 878 | (*objfile->sf->sym_init) (objfile); |
7eedccfa | 879 | clear_complaints (&symfile_complaints, 1, add_flags & SYMFILE_VERBOSE); |
c906108c | 880 | |
7e8580c1 JB |
881 | if (addrs) |
882 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
883 | else | |
884 | { | |
885 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
886 | ||
887 | /* Just copy in the offset table directly as given to us. */ | |
888 | objfile->num_sections = num_offsets; | |
889 | objfile->section_offsets | |
890 | = ((struct section_offsets *) | |
8b92e4d5 | 891 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
892 | memcpy (objfile->section_offsets, offsets, size); |
893 | ||
894 | init_objfile_sect_indices (objfile); | |
895 | } | |
c906108c | 896 | |
f4352531 | 897 | (*objfile->sf->sym_read) (objfile, add_flags); |
c906108c | 898 | |
c906108c SS |
899 | /* Discard cleanups as symbol reading was successful. */ |
900 | ||
901 | discard_cleanups (old_chain); | |
f7545552 | 902 | xfree (local_addr); |
c906108c SS |
903 | } |
904 | ||
905 | /* Perform required actions after either reading in the initial | |
906 | symbols for a new objfile, or mapping in the symbols from a reusable | |
907 | objfile. */ | |
c5aa993b | 908 | |
c906108c | 909 | void |
7eedccfa | 910 | new_symfile_objfile (struct objfile *objfile, int add_flags) |
c906108c SS |
911 | { |
912 | ||
913 | /* If this is the main symbol file we have to clean up all users of the | |
914 | old main symbol file. Otherwise it is sufficient to fixup all the | |
915 | breakpoints that may have been redefined by this symbol file. */ | |
7eedccfa | 916 | if (add_flags & SYMFILE_MAINLINE) |
c906108c SS |
917 | { |
918 | /* OK, make it the "real" symbol file. */ | |
919 | symfile_objfile = objfile; | |
920 | ||
921 | clear_symtab_users (); | |
922 | } | |
7eedccfa | 923 | else if ((add_flags & SYMFILE_DEFER_BP_RESET) == 0) |
c906108c | 924 | { |
69de3c6a | 925 | breakpoint_re_set (); |
c906108c SS |
926 | } |
927 | ||
928 | /* We're done reading the symbol file; finish off complaints. */ | |
7eedccfa | 929 | clear_complaints (&symfile_complaints, 0, add_flags & SYMFILE_VERBOSE); |
c906108c SS |
930 | } |
931 | ||
932 | /* Process a symbol file, as either the main file or as a dynamically | |
933 | loaded file. | |
934 | ||
5417f6dc RM |
935 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
936 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f | 937 | |
7eedccfa PP |
938 | ADD_FLAGS encodes verbosity, whether this is main symbol file or |
939 | extra, such as dynamically loaded code, and what to do with breakpoins. | |
7904e09f JB |
940 | |
941 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
7eedccfa PP |
942 | syms_from_objfile, above. |
943 | ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS. | |
c906108c | 944 | |
c906108c SS |
945 | Upon success, returns a pointer to the objfile that was added. |
946 | Upon failure, jumps back to command level (never returns). */ | |
7eedccfa | 947 | |
7904e09f | 948 | static struct objfile * |
7eedccfa PP |
949 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, |
950 | int add_flags, | |
7904e09f JB |
951 | struct section_addr_info *addrs, |
952 | struct section_offsets *offsets, | |
953 | int num_offsets, | |
7eedccfa | 954 | int flags) |
c906108c SS |
955 | { |
956 | struct objfile *objfile; | |
957 | struct partial_symtab *psymtab; | |
a39a16c4 | 958 | struct cleanup *my_cleanups; |
5417f6dc | 959 | const char *name = bfd_get_filename (abfd); |
7eedccfa | 960 | const int from_tty = add_flags & SYMFILE_VERBOSE; |
c906108c | 961 | |
5417f6dc | 962 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 963 | |
5417f6dc RM |
964 | /* Give user a chance to burp if we'd be |
965 | interactively wiping out any existing symbols. */ | |
c906108c SS |
966 | |
967 | if ((have_full_symbols () || have_partial_symbols ()) | |
7eedccfa | 968 | && (add_flags & SYMFILE_MAINLINE) |
c906108c | 969 | && from_tty |
9e2f0ad4 | 970 | && !query (_("Load new symbol table from \"%s\"? "), name)) |
8a3fe4f8 | 971 | error (_("Not confirmed.")); |
c906108c | 972 | |
2df3850c | 973 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 974 | discard_cleanups (my_cleanups); |
c906108c | 975 | |
78a4a9b9 AC |
976 | /* We either created a new mapped symbol table, mapped an existing |
977 | symbol table file which has not had initial symbol reading | |
978 | performed, or need to read an unmapped symbol table. */ | |
979 | if (from_tty || info_verbose) | |
c906108c | 980 | { |
769d7dc4 AC |
981 | if (deprecated_pre_add_symbol_hook) |
982 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 983 | else |
c906108c | 984 | { |
55333a84 DE |
985 | printf_unfiltered (_("Reading symbols from %s..."), name); |
986 | wrap_here (""); | |
987 | gdb_flush (gdb_stdout); | |
c906108c | 988 | } |
c906108c | 989 | } |
78a4a9b9 | 990 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
7eedccfa | 991 | add_flags); |
c906108c SS |
992 | |
993 | /* We now have at least a partial symbol table. Check to see if the | |
994 | user requested that all symbols be read on initial access via either | |
995 | the gdb startup command line or on a per symbol file basis. Expand | |
996 | all partial symbol tables for this objfile if so. */ | |
997 | ||
2acceee2 | 998 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 999 | { |
55333a84 | 1000 | if (from_tty || info_verbose) |
c906108c | 1001 | { |
a3f17187 | 1002 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1003 | wrap_here (""); |
1004 | gdb_flush (gdb_stdout); | |
1005 | } | |
1006 | ||
c5aa993b | 1007 | for (psymtab = objfile->psymtabs; |
c906108c | 1008 | psymtab != NULL; |
c5aa993b | 1009 | psymtab = psymtab->next) |
c906108c SS |
1010 | { |
1011 | psymtab_to_symtab (psymtab); | |
1012 | } | |
1013 | } | |
1014 | ||
55333a84 | 1015 | if ((from_tty || info_verbose) |
e361b228 | 1016 | && !objfile_has_symbols (objfile)) |
cb3c37b2 JB |
1017 | { |
1018 | wrap_here (""); | |
55333a84 | 1019 | printf_unfiltered (_("(no debugging symbols found)...")); |
cb3c37b2 JB |
1020 | wrap_here (""); |
1021 | } | |
1022 | ||
c906108c SS |
1023 | if (from_tty || info_verbose) |
1024 | { | |
769d7dc4 AC |
1025 | if (deprecated_post_add_symbol_hook) |
1026 | deprecated_post_add_symbol_hook (); | |
c906108c | 1027 | else |
55333a84 | 1028 | printf_unfiltered (_("done.\n")); |
c906108c SS |
1029 | } |
1030 | ||
481d0f41 JB |
1031 | /* We print some messages regardless of whether 'from_tty || |
1032 | info_verbose' is true, so make sure they go out at the right | |
1033 | time. */ | |
1034 | gdb_flush (gdb_stdout); | |
1035 | ||
a39a16c4 MM |
1036 | do_cleanups (my_cleanups); |
1037 | ||
109f874e | 1038 | if (objfile->sf == NULL) |
8caee43b PP |
1039 | { |
1040 | observer_notify_new_objfile (objfile); | |
1041 | return objfile; /* No symbols. */ | |
1042 | } | |
109f874e | 1043 | |
7eedccfa | 1044 | new_symfile_objfile (objfile, add_flags); |
c906108c | 1045 | |
06d3b283 | 1046 | observer_notify_new_objfile (objfile); |
c906108c | 1047 | |
ce7d4522 | 1048 | bfd_cache_close_all (); |
c906108c SS |
1049 | return (objfile); |
1050 | } | |
1051 | ||
9cce227f TG |
1052 | /* Add BFD as a separate debug file for OBJFILE. */ |
1053 | ||
1054 | void | |
1055 | symbol_file_add_separate (bfd *bfd, int symfile_flags, struct objfile *objfile) | |
1056 | { | |
15d123c9 | 1057 | struct objfile *new_objfile; |
089b4803 TG |
1058 | struct section_addr_info *sap; |
1059 | struct cleanup *my_cleanup; | |
1060 | ||
1061 | /* Create section_addr_info. We can't directly use offsets from OBJFILE | |
1062 | because sections of BFD may not match sections of OBJFILE and because | |
1063 | vma may have been modified by tools such as prelink. */ | |
1064 | sap = build_section_addr_info_from_objfile (objfile); | |
1065 | my_cleanup = make_cleanup_free_section_addr_info (sap); | |
9cce227f | 1066 | |
15d123c9 | 1067 | new_objfile = symbol_file_add_with_addrs_or_offsets |
9cce227f | 1068 | (bfd, symfile_flags, |
089b4803 | 1069 | sap, NULL, 0, |
9cce227f TG |
1070 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
1071 | | OBJF_USERLOADED)); | |
089b4803 TG |
1072 | |
1073 | do_cleanups (my_cleanup); | |
9cce227f | 1074 | |
15d123c9 | 1075 | add_separate_debug_objfile (new_objfile, objfile); |
9cce227f | 1076 | } |
7904e09f | 1077 | |
eb4556d7 JB |
1078 | /* Process the symbol file ABFD, as either the main file or as a |
1079 | dynamically loaded file. | |
1080 | ||
1081 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1082 | details. */ | |
1083 | struct objfile * | |
7eedccfa | 1084 | symbol_file_add_from_bfd (bfd *abfd, int add_flags, |
eb4556d7 | 1085 | struct section_addr_info *addrs, |
7eedccfa | 1086 | int flags) |
eb4556d7 | 1087 | { |
7eedccfa PP |
1088 | return symbol_file_add_with_addrs_or_offsets (abfd, add_flags, addrs, 0, 0, |
1089 | flags); | |
eb4556d7 JB |
1090 | } |
1091 | ||
1092 | ||
7904e09f JB |
1093 | /* Process a symbol file, as either the main file or as a dynamically |
1094 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1095 | for details. */ | |
1096 | struct objfile * | |
7eedccfa PP |
1097 | symbol_file_add (char *name, int add_flags, struct section_addr_info *addrs, |
1098 | int flags) | |
7904e09f | 1099 | { |
7eedccfa PP |
1100 | return symbol_file_add_from_bfd (symfile_bfd_open (name), add_flags, addrs, |
1101 | flags); | |
7904e09f JB |
1102 | } |
1103 | ||
1104 | ||
d7db6da9 FN |
1105 | /* Call symbol_file_add() with default values and update whatever is |
1106 | affected by the loading of a new main(). | |
1107 | Used when the file is supplied in the gdb command line | |
1108 | and by some targets with special loading requirements. | |
1109 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1110 | argument for the switches that can only be specified in the symbol_file | |
1111 | command itself. */ | |
5417f6dc | 1112 | |
1adeb98a FN |
1113 | void |
1114 | symbol_file_add_main (char *args, int from_tty) | |
1115 | { | |
d7db6da9 FN |
1116 | symbol_file_add_main_1 (args, from_tty, 0); |
1117 | } | |
1118 | ||
1119 | static void | |
1120 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1121 | { | |
7eedccfa PP |
1122 | const int add_flags = SYMFILE_MAINLINE | (from_tty ? SYMFILE_VERBOSE : 0); |
1123 | symbol_file_add (args, add_flags, NULL, flags); | |
d7db6da9 | 1124 | |
d7db6da9 FN |
1125 | /* Getting new symbols may change our opinion about |
1126 | what is frameless. */ | |
1127 | reinit_frame_cache (); | |
1128 | ||
1129 | set_initial_language (); | |
1adeb98a FN |
1130 | } |
1131 | ||
1132 | void | |
1133 | symbol_file_clear (int from_tty) | |
1134 | { | |
1135 | if ((have_full_symbols () || have_partial_symbols ()) | |
1136 | && from_tty | |
0430b0d6 AS |
1137 | && (symfile_objfile |
1138 | ? !query (_("Discard symbol table from `%s'? "), | |
1139 | symfile_objfile->name) | |
1140 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1141 | error (_("Not confirmed.")); |
1adeb98a | 1142 | |
d10c338d | 1143 | free_all_objfiles (); |
1adeb98a | 1144 | |
d10c338d DE |
1145 | /* solib descriptors may have handles to objfiles. Since their |
1146 | storage has just been released, we'd better wipe the solib | |
1147 | descriptors as well. */ | |
1148 | no_shared_libraries (NULL, from_tty); | |
1149 | ||
adb7f338 | 1150 | gdb_assert (symfile_objfile == NULL); |
d10c338d DE |
1151 | if (from_tty) |
1152 | printf_unfiltered (_("No symbol file now.\n")); | |
1adeb98a FN |
1153 | } |
1154 | ||
5b5d99cf JB |
1155 | static char * |
1156 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1157 | { | |
1158 | asection *sect; | |
1159 | bfd_size_type debuglink_size; | |
1160 | unsigned long crc32; | |
1161 | char *contents; | |
1162 | int crc_offset; | |
1163 | unsigned char *p; | |
5417f6dc | 1164 | |
5b5d99cf JB |
1165 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1166 | ||
1167 | if (sect == NULL) | |
1168 | return NULL; | |
1169 | ||
1170 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1171 | |
5b5d99cf JB |
1172 | contents = xmalloc (debuglink_size); |
1173 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1174 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1175 | ||
1176 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1177 | crc_offset = strlen (contents) + 1; | |
1178 | crc_offset = (crc_offset + 3) & ~3; | |
1179 | ||
1180 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1181 | |
5b5d99cf JB |
1182 | *crc32_out = crc32; |
1183 | return contents; | |
1184 | } | |
1185 | ||
1186 | static int | |
287ccc17 | 1187 | separate_debug_file_exists (const char *name, unsigned long crc, |
32a0e547 | 1188 | struct objfile *parent_objfile) |
5b5d99cf JB |
1189 | { |
1190 | unsigned long file_crc = 0; | |
f1838a98 | 1191 | bfd *abfd; |
777ea8f1 | 1192 | gdb_byte buffer[8*1024]; |
5b5d99cf | 1193 | int count; |
32a0e547 JK |
1194 | struct stat parent_stat, abfd_stat; |
1195 | ||
1196 | /* Find a separate debug info file as if symbols would be present in | |
1197 | PARENT_OBJFILE itself this function would not be called. .gnu_debuglink | |
1198 | section can contain just the basename of PARENT_OBJFILE without any | |
1199 | ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where | |
1200 | the separate debug infos with the same basename can exist. */ | |
1201 | ||
1202 | if (strcmp (name, parent_objfile->name) == 0) | |
1203 | return 0; | |
5b5d99cf | 1204 | |
874f5765 | 1205 | abfd = bfd_open_maybe_remote (name); |
f1838a98 UW |
1206 | |
1207 | if (!abfd) | |
5b5d99cf JB |
1208 | return 0; |
1209 | ||
32a0e547 JK |
1210 | /* Verify symlinks were not the cause of strcmp name difference above. |
1211 | ||
1212 | Some operating systems, e.g. Windows, do not provide a meaningful | |
1213 | st_ino; they always set it to zero. (Windows does provide a | |
1214 | meaningful st_dev.) Do not indicate a duplicate library in that | |
1215 | case. While there is no guarantee that a system that provides | |
1216 | meaningful inode numbers will never set st_ino to zero, this is | |
1217 | merely an optimization, so we do not need to worry about false | |
1218 | negatives. */ | |
1219 | ||
1220 | if (bfd_stat (abfd, &abfd_stat) == 0 | |
1221 | && bfd_stat (parent_objfile->obfd, &parent_stat) == 0 | |
1222 | && abfd_stat.st_dev == parent_stat.st_dev | |
1223 | && abfd_stat.st_ino == parent_stat.st_ino | |
1224 | && abfd_stat.st_ino != 0) | |
1225 | { | |
1226 | bfd_close (abfd); | |
1227 | return 0; | |
1228 | } | |
1229 | ||
f1838a98 | 1230 | while ((count = bfd_bread (buffer, sizeof (buffer), abfd)) > 0) |
5b5d99cf JB |
1231 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); |
1232 | ||
f1838a98 | 1233 | bfd_close (abfd); |
5b5d99cf | 1234 | |
287ccc17 JK |
1235 | if (crc != file_crc) |
1236 | { | |
1237 | warning (_("the debug information found in \"%s\"" | |
1238 | " does not match \"%s\" (CRC mismatch).\n"), | |
32a0e547 | 1239 | name, parent_objfile->name); |
287ccc17 JK |
1240 | return 0; |
1241 | } | |
1242 | ||
1243 | return 1; | |
5b5d99cf JB |
1244 | } |
1245 | ||
aa28a74e | 1246 | char *debug_file_directory = NULL; |
920d2a44 AC |
1247 | static void |
1248 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1249 | struct cmd_list_element *c, const char *value) | |
1250 | { | |
1251 | fprintf_filtered (file, _("\ | |
1252 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1253 | value); | |
1254 | } | |
5b5d99cf JB |
1255 | |
1256 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1257 | #define DEBUG_SUBDIRECTORY ".debug" | |
1258 | #endif | |
1259 | ||
9cce227f TG |
1260 | char * |
1261 | find_separate_debug_file_by_debuglink (struct objfile *objfile) | |
1262 | { | |
1263 | asection *sect; | |
1264 | char *basename, *name_copy, *debugdir; | |
1265 | char *dir = NULL; | |
1266 | char *debugfile = NULL; | |
1267 | char *canon_name = NULL; | |
1268 | bfd_size_type debuglink_size; | |
1269 | unsigned long crc32; | |
1270 | int i; | |
5b5d99cf JB |
1271 | |
1272 | basename = get_debug_link_info (objfile, &crc32); | |
1273 | ||
1274 | if (basename == NULL) | |
287ccc17 JK |
1275 | /* There's no separate debug info, hence there's no way we could |
1276 | load it => no warning. */ | |
25522fae | 1277 | goto cleanup_return_debugfile; |
5417f6dc | 1278 | |
5b5d99cf JB |
1279 | dir = xstrdup (objfile->name); |
1280 | ||
fe36c4f4 JB |
1281 | /* Strip off the final filename part, leaving the directory name, |
1282 | followed by a slash. Objfile names should always be absolute and | |
1283 | tilde-expanded, so there should always be a slash in there | |
1284 | somewhere. */ | |
5b5d99cf JB |
1285 | for (i = strlen(dir) - 1; i >= 0; i--) |
1286 | { | |
1287 | if (IS_DIR_SEPARATOR (dir[i])) | |
1288 | break; | |
1289 | } | |
fe36c4f4 | 1290 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1291 | dir[i+1] = '\0'; |
5417f6dc | 1292 | |
1ffa32ee JK |
1293 | /* Set I to max (strlen (canon_name), strlen (dir)). */ |
1294 | canon_name = lrealpath (dir); | |
1295 | i = strlen (dir); | |
1296 | if (canon_name && strlen (canon_name) > i) | |
1297 | i = strlen (canon_name); | |
1298 | ||
25522fae JK |
1299 | debugfile = xmalloc (strlen (debug_file_directory) + 1 |
1300 | + i | |
1301 | + strlen (DEBUG_SUBDIRECTORY) | |
1302 | + strlen ("/") | |
1303 | + strlen (basename) | |
1304 | + 1); | |
5b5d99cf JB |
1305 | |
1306 | /* First try in the same directory as the original file. */ | |
1307 | strcpy (debugfile, dir); | |
1308 | strcat (debugfile, basename); | |
1309 | ||
32a0e547 | 1310 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1311 | goto cleanup_return_debugfile; |
5417f6dc | 1312 | |
5b5d99cf JB |
1313 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1314 | strcpy (debugfile, dir); | |
1315 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1316 | strcat (debugfile, "/"); | |
1317 | strcat (debugfile, basename); | |
1318 | ||
32a0e547 | 1319 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1320 | goto cleanup_return_debugfile; |
5417f6dc | 1321 | |
24ddea62 JK |
1322 | /* Then try in the global debugfile directories. |
1323 | ||
1324 | Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will | |
1325 | cause "/..." lookups. */ | |
5417f6dc | 1326 | |
24ddea62 JK |
1327 | debugdir = debug_file_directory; |
1328 | do | |
aa28a74e | 1329 | { |
24ddea62 JK |
1330 | char *debugdir_end; |
1331 | ||
1332 | while (*debugdir == DIRNAME_SEPARATOR) | |
1333 | debugdir++; | |
1334 | ||
1335 | debugdir_end = strchr (debugdir, DIRNAME_SEPARATOR); | |
1336 | if (debugdir_end == NULL) | |
1337 | debugdir_end = &debugdir[strlen (debugdir)]; | |
1338 | ||
1339 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1340 | debugfile[debugdir_end - debugdir] = 0; | |
aa28a74e | 1341 | strcat (debugfile, "/"); |
24ddea62 | 1342 | strcat (debugfile, dir); |
aa28a74e DJ |
1343 | strcat (debugfile, basename); |
1344 | ||
32a0e547 | 1345 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
25522fae | 1346 | goto cleanup_return_debugfile; |
24ddea62 JK |
1347 | |
1348 | /* If the file is in the sysroot, try using its base path in the | |
1349 | global debugfile directory. */ | |
1350 | if (canon_name | |
1351 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1352 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1353 | { | |
1354 | memcpy (debugfile, debugdir, debugdir_end - debugdir); | |
1355 | debugfile[debugdir_end - debugdir] = 0; | |
1356 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1357 | strcat (debugfile, "/"); | |
1358 | strcat (debugfile, basename); | |
1359 | ||
32a0e547 | 1360 | if (separate_debug_file_exists (debugfile, crc32, objfile)) |
24ddea62 JK |
1361 | goto cleanup_return_debugfile; |
1362 | } | |
1363 | ||
1364 | debugdir = debugdir_end; | |
aa28a74e | 1365 | } |
24ddea62 | 1366 | while (*debugdir != 0); |
aa28a74e | 1367 | |
25522fae JK |
1368 | xfree (debugfile); |
1369 | debugfile = NULL; | |
aa28a74e | 1370 | |
25522fae JK |
1371 | cleanup_return_debugfile: |
1372 | xfree (canon_name); | |
5b5d99cf JB |
1373 | xfree (basename); |
1374 | xfree (dir); | |
25522fae | 1375 | return debugfile; |
5b5d99cf JB |
1376 | } |
1377 | ||
1378 | ||
c906108c SS |
1379 | /* This is the symbol-file command. Read the file, analyze its |
1380 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1381 | the command is rather bizarre: |
1382 | ||
1383 | 1. The function buildargv implements various quoting conventions | |
1384 | which are undocumented and have little or nothing in common with | |
1385 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1386 | ||
1387 | 2. Options are used, which are not generally used in GDB (perhaps | |
1388 | "set mapped on", "set readnow on" would be better) | |
1389 | ||
1390 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1391 | conventions (because it is confusing and inconvenient). */ |
1392 | ||
1393 | void | |
fba45db2 | 1394 | symbol_file_command (char *args, int from_tty) |
c906108c | 1395 | { |
c906108c SS |
1396 | dont_repeat (); |
1397 | ||
1398 | if (args == NULL) | |
1399 | { | |
1adeb98a | 1400 | symbol_file_clear (from_tty); |
c906108c SS |
1401 | } |
1402 | else | |
1403 | { | |
d1a41061 | 1404 | char **argv = gdb_buildargv (args); |
cb2f3a29 MK |
1405 | int flags = OBJF_USERLOADED; |
1406 | struct cleanup *cleanups; | |
1407 | char *name = NULL; | |
1408 | ||
7a292a7a | 1409 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1410 | while (*argv != NULL) |
1411 | { | |
78a4a9b9 AC |
1412 | if (strcmp (*argv, "-readnow") == 0) |
1413 | flags |= OBJF_READNOW; | |
1414 | else if (**argv == '-') | |
8a3fe4f8 | 1415 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1416 | else |
1417 | { | |
cb2f3a29 | 1418 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1419 | name = *argv; |
78a4a9b9 | 1420 | } |
cb2f3a29 | 1421 | |
c906108c SS |
1422 | argv++; |
1423 | } | |
1424 | ||
1425 | if (name == NULL) | |
cb2f3a29 MK |
1426 | error (_("no symbol file name was specified")); |
1427 | ||
c906108c SS |
1428 | do_cleanups (cleanups); |
1429 | } | |
1430 | } | |
1431 | ||
1432 | /* Set the initial language. | |
1433 | ||
cb2f3a29 MK |
1434 | FIXME: A better solution would be to record the language in the |
1435 | psymtab when reading partial symbols, and then use it (if known) to | |
1436 | set the language. This would be a win for formats that encode the | |
1437 | language in an easily discoverable place, such as DWARF. For | |
1438 | stabs, we can jump through hoops looking for specially named | |
1439 | symbols or try to intuit the language from the specific type of | |
1440 | stabs we find, but we can't do that until later when we read in | |
1441 | full symbols. */ | |
c906108c | 1442 | |
8b60591b | 1443 | void |
fba45db2 | 1444 | set_initial_language (void) |
c906108c SS |
1445 | { |
1446 | struct partial_symtab *pst; | |
c5aa993b | 1447 | enum language lang = language_unknown; |
c906108c SS |
1448 | |
1449 | pst = find_main_psymtab (); | |
1450 | if (pst != NULL) | |
1451 | { | |
c5aa993b | 1452 | if (pst->filename != NULL) |
cb2f3a29 MK |
1453 | lang = deduce_language_from_filename (pst->filename); |
1454 | ||
c906108c SS |
1455 | if (lang == language_unknown) |
1456 | { | |
c5aa993b JM |
1457 | /* Make C the default language */ |
1458 | lang = language_c; | |
c906108c | 1459 | } |
cb2f3a29 | 1460 | |
c906108c | 1461 | set_language (lang); |
cb2f3a29 | 1462 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1463 | } |
1464 | } | |
1465 | ||
874f5765 TG |
1466 | /* If NAME is a remote name open the file using remote protocol, otherwise |
1467 | open it normally. */ | |
1468 | ||
1469 | bfd * | |
1470 | bfd_open_maybe_remote (const char *name) | |
1471 | { | |
1472 | if (remote_filename_p (name)) | |
1473 | return remote_bfd_open (name, gnutarget); | |
1474 | else | |
1475 | return bfd_openr (name, gnutarget); | |
1476 | } | |
1477 | ||
1478 | ||
cb2f3a29 MK |
1479 | /* Open the file specified by NAME and hand it off to BFD for |
1480 | preliminary analysis. Return a newly initialized bfd *, which | |
1481 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1482 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1483 | |
1484 | bfd * | |
fba45db2 | 1485 | symfile_bfd_open (char *name) |
c906108c SS |
1486 | { |
1487 | bfd *sym_bfd; | |
1488 | int desc; | |
1489 | char *absolute_name; | |
1490 | ||
f1838a98 UW |
1491 | if (remote_filename_p (name)) |
1492 | { | |
1493 | name = xstrdup (name); | |
1494 | sym_bfd = remote_bfd_open (name, gnutarget); | |
1495 | if (!sym_bfd) | |
1496 | { | |
1497 | make_cleanup (xfree, name); | |
1498 | error (_("`%s': can't open to read symbols: %s."), name, | |
1499 | bfd_errmsg (bfd_get_error ())); | |
1500 | } | |
1501 | ||
1502 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1503 | { | |
1504 | bfd_close (sym_bfd); | |
1505 | make_cleanup (xfree, name); | |
1506 | error (_("`%s': can't read symbols: %s."), name, | |
1507 | bfd_errmsg (bfd_get_error ())); | |
1508 | } | |
1509 | ||
1510 | return sym_bfd; | |
1511 | } | |
1512 | ||
cb2f3a29 | 1513 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1514 | |
1515 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 | 1516 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
fbdebf46 | 1517 | O_RDONLY | O_BINARY, &absolute_name); |
608506ed | 1518 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1519 | if (desc < 0) |
1520 | { | |
1521 | char *exename = alloca (strlen (name) + 5); | |
1522 | strcat (strcpy (exename, name), ".exe"); | |
014d698b | 1523 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 1524 | O_RDONLY | O_BINARY, &absolute_name); |
c906108c SS |
1525 | } |
1526 | #endif | |
1527 | if (desc < 0) | |
1528 | { | |
b8c9b27d | 1529 | make_cleanup (xfree, name); |
c906108c SS |
1530 | perror_with_name (name); |
1531 | } | |
cb2f3a29 MK |
1532 | |
1533 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1534 | bfd. It'll be freed in free_objfile(). */ | |
1535 | xfree (name); | |
1536 | name = absolute_name; | |
c906108c | 1537 | |
9f76c2cd | 1538 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1539 | if (!sym_bfd) |
1540 | { | |
1541 | close (desc); | |
b8c9b27d | 1542 | make_cleanup (xfree, name); |
f1838a98 | 1543 | error (_("`%s': can't open to read symbols: %s."), name, |
c906108c SS |
1544 | bfd_errmsg (bfd_get_error ())); |
1545 | } | |
549c1eea | 1546 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1547 | |
1548 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1549 | { | |
cb2f3a29 MK |
1550 | /* FIXME: should be checking for errors from bfd_close (for one |
1551 | thing, on error it does not free all the storage associated | |
1552 | with the bfd). */ | |
1553 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1554 | make_cleanup (xfree, name); |
f1838a98 | 1555 | error (_("`%s': can't read symbols: %s."), name, |
c906108c SS |
1556 | bfd_errmsg (bfd_get_error ())); |
1557 | } | |
cb2f3a29 | 1558 | |
4f6f9936 JK |
1559 | /* bfd_usrdata exists for applications and libbfd must not touch it. */ |
1560 | gdb_assert (bfd_usrdata (sym_bfd) == NULL); | |
1561 | ||
cb2f3a29 | 1562 | return sym_bfd; |
c906108c SS |
1563 | } |
1564 | ||
cb2f3a29 MK |
1565 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1566 | the section was not found. */ | |
1567 | ||
0e931cf0 JB |
1568 | int |
1569 | get_section_index (struct objfile *objfile, char *section_name) | |
1570 | { | |
1571 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1572 | |
0e931cf0 JB |
1573 | if (sect) |
1574 | return sect->index; | |
1575 | else | |
1576 | return -1; | |
1577 | } | |
1578 | ||
cb2f3a29 MK |
1579 | /* Link SF into the global symtab_fns list. Called on startup by the |
1580 | _initialize routine in each object file format reader, to register | |
1581 | information about each format the the reader is prepared to | |
1582 | handle. */ | |
c906108c SS |
1583 | |
1584 | void | |
fba45db2 | 1585 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1586 | { |
1587 | sf->next = symtab_fns; | |
1588 | symtab_fns = sf; | |
1589 | } | |
1590 | ||
cb2f3a29 MK |
1591 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1592 | either returns or calls error(). The result is an initialized | |
1593 | struct sym_fns in the objfile structure, that contains cached | |
1594 | information about the symbol file. */ | |
c906108c | 1595 | |
31d99776 DJ |
1596 | static struct sym_fns * |
1597 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1598 | { |
1599 | struct sym_fns *sf; | |
31d99776 | 1600 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1601 | |
75245b24 MS |
1602 | if (our_flavour == bfd_target_srec_flavour |
1603 | || our_flavour == bfd_target_ihex_flavour | |
1604 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1605 | return NULL; /* No symbols. */ |
75245b24 | 1606 | |
c5aa993b | 1607 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1608 | if (our_flavour == sf->sym_flavour) |
1609 | return sf; | |
cb2f3a29 | 1610 | |
8a3fe4f8 | 1611 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1612 | bfd_get_target (abfd)); |
c906108c SS |
1613 | } |
1614 | \f | |
cb2f3a29 | 1615 | |
c906108c SS |
1616 | /* This function runs the load command of our current target. */ |
1617 | ||
1618 | static void | |
fba45db2 | 1619 | load_command (char *arg, int from_tty) |
c906108c | 1620 | { |
4487aabf PA |
1621 | /* The user might be reloading because the binary has changed. Take |
1622 | this opportunity to check. */ | |
1623 | reopen_exec_file (); | |
1624 | reread_symbols (); | |
1625 | ||
c906108c | 1626 | if (arg == NULL) |
1986bccd AS |
1627 | { |
1628 | char *parg; | |
1629 | int count = 0; | |
1630 | ||
1631 | parg = arg = get_exec_file (1); | |
1632 | ||
1633 | /* Count how many \ " ' tab space there are in the name. */ | |
1634 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1635 | { | |
1636 | parg++; | |
1637 | count++; | |
1638 | } | |
1639 | ||
1640 | if (count) | |
1641 | { | |
1642 | /* We need to quote this string so buildargv can pull it apart. */ | |
1643 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1644 | char *ptemp = temp; | |
1645 | char *prev; | |
1646 | ||
1647 | make_cleanup (xfree, temp); | |
1648 | ||
1649 | prev = parg = arg; | |
1650 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1651 | { | |
1652 | strncpy (ptemp, prev, parg - prev); | |
1653 | ptemp += parg - prev; | |
1654 | prev = parg++; | |
1655 | *ptemp++ = '\\'; | |
1656 | } | |
1657 | strcpy (ptemp, prev); | |
1658 | ||
1659 | arg = temp; | |
1660 | } | |
1661 | } | |
1662 | ||
c906108c | 1663 | target_load (arg, from_tty); |
2889e661 JB |
1664 | |
1665 | /* After re-loading the executable, we don't really know which | |
1666 | overlays are mapped any more. */ | |
1667 | overlay_cache_invalid = 1; | |
c906108c SS |
1668 | } |
1669 | ||
1670 | /* This version of "load" should be usable for any target. Currently | |
1671 | it is just used for remote targets, not inftarg.c or core files, | |
1672 | on the theory that only in that case is it useful. | |
1673 | ||
1674 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1675 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1676 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1677 | performance compares. */ | |
917317f4 | 1678 | |
917317f4 JM |
1679 | static int validate_download = 0; |
1680 | ||
e4f9b4d5 MS |
1681 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1682 | ||
1683 | static void | |
1684 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1685 | { | |
1686 | bfd_size_type *sum = data; | |
1687 | ||
2c500098 | 1688 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1689 | } |
1690 | ||
1691 | /* Opaque data for load_section_callback. */ | |
1692 | struct load_section_data { | |
1693 | unsigned long load_offset; | |
a76d924d DJ |
1694 | struct load_progress_data *progress_data; |
1695 | VEC(memory_write_request_s) *requests; | |
1696 | }; | |
1697 | ||
1698 | /* Opaque data for load_progress. */ | |
1699 | struct load_progress_data { | |
1700 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1701 | unsigned long write_count; |
1702 | unsigned long data_count; | |
1703 | bfd_size_type total_size; | |
a76d924d DJ |
1704 | }; |
1705 | ||
1706 | /* Opaque data for load_progress for a single section. */ | |
1707 | struct load_progress_section_data { | |
1708 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1709 | |
a76d924d | 1710 | /* Per-section data. */ |
cf7a04e8 DJ |
1711 | const char *section_name; |
1712 | ULONGEST section_sent; | |
1713 | ULONGEST section_size; | |
1714 | CORE_ADDR lma; | |
1715 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1716 | }; |
1717 | ||
a76d924d | 1718 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1719 | |
1720 | static void | |
1721 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1722 | { | |
a76d924d DJ |
1723 | struct load_progress_section_data *args = untyped_arg; |
1724 | struct load_progress_data *totals; | |
1725 | ||
1726 | if (args == NULL) | |
1727 | /* Writing padding data. No easy way to get at the cumulative | |
1728 | stats, so just ignore this. */ | |
1729 | return; | |
1730 | ||
1731 | totals = args->cumulative; | |
1732 | ||
1733 | if (bytes == 0 && args->section_sent == 0) | |
1734 | { | |
1735 | /* The write is just starting. Let the user know we've started | |
1736 | this section. */ | |
5af949e3 UW |
1737 | ui_out_message (uiout, 0, "Loading section %s, size %s lma %s\n", |
1738 | args->section_name, hex_string (args->section_size), | |
1739 | paddress (target_gdbarch, args->lma)); | |
a76d924d DJ |
1740 | return; |
1741 | } | |
cf7a04e8 DJ |
1742 | |
1743 | if (validate_download) | |
1744 | { | |
1745 | /* Broken memories and broken monitors manifest themselves here | |
1746 | when bring new computers to life. This doubles already slow | |
1747 | downloads. */ | |
1748 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1749 | might add a verify_memory() method to the target vector and | |
1750 | then use that. remote.c could implement that method using | |
1751 | the ``qCRC'' packet. */ | |
1752 | gdb_byte *check = xmalloc (bytes); | |
1753 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1754 | ||
1755 | if (target_read_memory (args->lma, check, bytes) != 0) | |
5af949e3 UW |
1756 | error (_("Download verify read failed at %s"), |
1757 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 | 1758 | if (memcmp (args->buffer, check, bytes) != 0) |
5af949e3 UW |
1759 | error (_("Download verify compare failed at %s"), |
1760 | paddress (target_gdbarch, args->lma)); | |
cf7a04e8 DJ |
1761 | do_cleanups (verify_cleanups); |
1762 | } | |
a76d924d | 1763 | totals->data_count += bytes; |
cf7a04e8 DJ |
1764 | args->lma += bytes; |
1765 | args->buffer += bytes; | |
a76d924d | 1766 | totals->write_count += 1; |
cf7a04e8 DJ |
1767 | args->section_sent += bytes; |
1768 | if (quit_flag | |
1769 | || (deprecated_ui_load_progress_hook != NULL | |
1770 | && deprecated_ui_load_progress_hook (args->section_name, | |
1771 | args->section_sent))) | |
1772 | error (_("Canceled the download")); | |
1773 | ||
1774 | if (deprecated_show_load_progress != NULL) | |
1775 | deprecated_show_load_progress (args->section_name, | |
1776 | args->section_sent, | |
1777 | args->section_size, | |
a76d924d DJ |
1778 | totals->data_count, |
1779 | totals->total_size); | |
cf7a04e8 DJ |
1780 | } |
1781 | ||
e4f9b4d5 MS |
1782 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1783 | ||
1784 | static void | |
1785 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1786 | { | |
a76d924d | 1787 | struct memory_write_request *new_request; |
e4f9b4d5 | 1788 | struct load_section_data *args = data; |
a76d924d | 1789 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1790 | bfd_size_type size = bfd_get_section_size (asec); |
1791 | gdb_byte *buffer; | |
cf7a04e8 | 1792 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1793 | |
cf7a04e8 DJ |
1794 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1795 | return; | |
e4f9b4d5 | 1796 | |
cf7a04e8 DJ |
1797 | if (size == 0) |
1798 | return; | |
e4f9b4d5 | 1799 | |
a76d924d DJ |
1800 | new_request = VEC_safe_push (memory_write_request_s, |
1801 | args->requests, NULL); | |
1802 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1803 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1804 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1805 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1806 | new_request->data = xmalloc (size); | |
1807 | new_request->baton = section_data; | |
cf7a04e8 | 1808 | |
a76d924d | 1809 | buffer = new_request->data; |
cf7a04e8 | 1810 | |
a76d924d DJ |
1811 | section_data->cumulative = args->progress_data; |
1812 | section_data->section_name = sect_name; | |
1813 | section_data->section_size = size; | |
1814 | section_data->lma = new_request->begin; | |
1815 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1816 | |
1817 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1818 | } |
1819 | ||
1820 | /* Clean up an entire memory request vector, including load | |
1821 | data and progress records. */ | |
cf7a04e8 | 1822 | |
a76d924d DJ |
1823 | static void |
1824 | clear_memory_write_data (void *arg) | |
1825 | { | |
1826 | VEC(memory_write_request_s) **vec_p = arg; | |
1827 | VEC(memory_write_request_s) *vec = *vec_p; | |
1828 | int i; | |
1829 | struct memory_write_request *mr; | |
cf7a04e8 | 1830 | |
a76d924d DJ |
1831 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1832 | { | |
1833 | xfree (mr->data); | |
1834 | xfree (mr->baton); | |
1835 | } | |
1836 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1837 | } |
1838 | ||
c906108c | 1839 | void |
917317f4 | 1840 | generic_load (char *args, int from_tty) |
c906108c | 1841 | { |
c906108c | 1842 | bfd *loadfile_bfd; |
2b71414d | 1843 | struct timeval start_time, end_time; |
917317f4 | 1844 | char *filename; |
1986bccd | 1845 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1846 | struct load_section_data cbdata; |
a76d924d DJ |
1847 | struct load_progress_data total_progress; |
1848 | ||
e4f9b4d5 | 1849 | CORE_ADDR entry; |
1986bccd | 1850 | char **argv; |
e4f9b4d5 | 1851 | |
a76d924d DJ |
1852 | memset (&cbdata, 0, sizeof (cbdata)); |
1853 | memset (&total_progress, 0, sizeof (total_progress)); | |
1854 | cbdata.progress_data = &total_progress; | |
1855 | ||
1856 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1857 | |
d1a41061 PP |
1858 | if (args == NULL) |
1859 | error_no_arg (_("file to load")); | |
1986bccd | 1860 | |
d1a41061 | 1861 | argv = gdb_buildargv (args); |
1986bccd AS |
1862 | make_cleanup_freeargv (argv); |
1863 | ||
1864 | filename = tilde_expand (argv[0]); | |
1865 | make_cleanup (xfree, filename); | |
1866 | ||
1867 | if (argv[1] != NULL) | |
917317f4 JM |
1868 | { |
1869 | char *endptr; | |
ba5f2f8a | 1870 | |
1986bccd AS |
1871 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1872 | ||
1873 | /* If the last word was not a valid number then | |
1874 | treat it as a file name with spaces in. */ | |
1875 | if (argv[1] == endptr) | |
1876 | error (_("Invalid download offset:%s."), argv[1]); | |
1877 | ||
1878 | if (argv[2] != NULL) | |
1879 | error (_("Too many parameters.")); | |
917317f4 | 1880 | } |
c906108c | 1881 | |
917317f4 | 1882 | /* Open the file for loading. */ |
c906108c SS |
1883 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1884 | if (loadfile_bfd == NULL) | |
1885 | { | |
1886 | perror_with_name (filename); | |
1887 | return; | |
1888 | } | |
917317f4 | 1889 | |
c906108c SS |
1890 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1891 | on error it does not free all the storage associated with the | |
1892 | bfd). */ | |
5c65bbb6 | 1893 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1894 | |
c5aa993b | 1895 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1896 | { |
8a3fe4f8 | 1897 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1898 | bfd_errmsg (bfd_get_error ())); |
1899 | } | |
c5aa993b | 1900 | |
5417f6dc | 1901 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1902 | (void *) &total_progress.total_size); |
1903 | ||
1904 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1905 | |
2b71414d | 1906 | gettimeofday (&start_time, NULL); |
c906108c | 1907 | |
a76d924d DJ |
1908 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1909 | load_progress) != 0) | |
1910 | error (_("Load failed")); | |
c906108c | 1911 | |
2b71414d | 1912 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1913 | |
e4f9b4d5 | 1914 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 | 1915 | ui_out_text (uiout, "Start address "); |
5af949e3 | 1916 | ui_out_field_fmt (uiout, "address", "%s", paddress (target_gdbarch, entry)); |
e4f9b4d5 | 1917 | ui_out_text (uiout, ", load size "); |
a76d924d | 1918 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 1919 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
1920 | /* We were doing this in remote-mips.c, I suspect it is right |
1921 | for other targets too. */ | |
fb14de7b | 1922 | regcache_write_pc (get_current_regcache (), entry); |
c906108c | 1923 | |
7ca9f392 AC |
1924 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1925 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1926 | was commented out), making the call confuses GDB if more than one | |
1927 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1928 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1929 | |
a76d924d DJ |
1930 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
1931 | total_progress.write_count, | |
1932 | &start_time, &end_time); | |
c906108c SS |
1933 | |
1934 | do_cleanups (old_cleanups); | |
1935 | } | |
1936 | ||
1937 | /* Report how fast the transfer went. */ | |
1938 | ||
917317f4 JM |
1939 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1940 | replaced by print_transfer_performance (with a very different | |
1941 | function signature). */ | |
1942 | ||
c906108c | 1943 | void |
fba45db2 KB |
1944 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1945 | time_t end_time) | |
c906108c | 1946 | { |
2b71414d DJ |
1947 | struct timeval start, end; |
1948 | ||
1949 | start.tv_sec = start_time; | |
1950 | start.tv_usec = 0; | |
1951 | end.tv_sec = end_time; | |
1952 | end.tv_usec = 0; | |
1953 | ||
1954 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
1955 | } |
1956 | ||
1957 | void | |
d9fcf2fb | 1958 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1959 | unsigned long data_count, |
1960 | unsigned long write_count, | |
2b71414d DJ |
1961 | const struct timeval *start_time, |
1962 | const struct timeval *end_time) | |
917317f4 | 1963 | { |
9f43d28c | 1964 | ULONGEST time_count; |
2b71414d DJ |
1965 | |
1966 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
1967 | accuracy and overflow. */ | |
1968 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
1969 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
1970 | ||
8b93c638 JM |
1971 | ui_out_text (uiout, "Transfer rate: "); |
1972 | if (time_count > 0) | |
1973 | { | |
9f43d28c DJ |
1974 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
1975 | ||
1976 | if (ui_out_is_mi_like_p (uiout)) | |
1977 | { | |
1978 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
1979 | ui_out_text (uiout, " bits/sec"); | |
1980 | } | |
1981 | else if (rate < 1024) | |
1982 | { | |
1983 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
1984 | ui_out_text (uiout, " bytes/sec"); | |
1985 | } | |
1986 | else | |
1987 | { | |
1988 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
1989 | ui_out_text (uiout, " KB/sec"); | |
1990 | } | |
8b93c638 JM |
1991 | } |
1992 | else | |
1993 | { | |
ba5f2f8a | 1994 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 1995 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
1996 | } |
1997 | if (write_count > 0) | |
1998 | { | |
1999 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2000 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2001 | ui_out_text (uiout, " bytes/write"); |
2002 | } | |
2003 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2004 | } |
2005 | ||
2006 | /* This function allows the addition of incrementally linked object files. | |
2007 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2008 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2009 | special case syntax for the rombug target (Rombug is the boot | |
2010 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2011 | rombug case, the user doesn't need to supply a text address, | |
2012 | instead a call to target_link() (in target.c) would supply the | |
2013 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2014 | |
c906108c | 2015 | static void |
fba45db2 | 2016 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2017 | { |
5af949e3 | 2018 | struct gdbarch *gdbarch = get_current_arch (); |
db162d44 | 2019 | char *filename = NULL; |
2df3850c | 2020 | int flags = OBJF_USERLOADED; |
c906108c | 2021 | char *arg; |
2acceee2 | 2022 | int expecting_option = 0; |
db162d44 | 2023 | int section_index = 0; |
2acceee2 JM |
2024 | int argcnt = 0; |
2025 | int sec_num = 0; | |
2026 | int i; | |
db162d44 EZ |
2027 | int expecting_sec_name = 0; |
2028 | int expecting_sec_addr = 0; | |
5b96932b | 2029 | char **argv; |
db162d44 | 2030 | |
a39a16c4 | 2031 | struct sect_opt |
2acceee2 | 2032 | { |
2acceee2 JM |
2033 | char *name; |
2034 | char *value; | |
a39a16c4 | 2035 | }; |
db162d44 | 2036 | |
a39a16c4 MM |
2037 | struct section_addr_info *section_addrs; |
2038 | struct sect_opt *sect_opts = NULL; | |
2039 | size_t num_sect_opts = 0; | |
3017564a | 2040 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2041 | |
a39a16c4 | 2042 | num_sect_opts = 16; |
5417f6dc | 2043 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2044 | * sizeof (struct sect_opt)); |
2045 | ||
c906108c SS |
2046 | dont_repeat (); |
2047 | ||
2048 | if (args == NULL) | |
8a3fe4f8 | 2049 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2050 | |
d1a41061 | 2051 | argv = gdb_buildargv (args); |
5b96932b | 2052 | make_cleanup_freeargv (argv); |
db162d44 | 2053 | |
5b96932b AS |
2054 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2055 | { | |
2056 | /* Process the argument. */ | |
db162d44 | 2057 | if (argcnt == 0) |
c906108c | 2058 | { |
db162d44 EZ |
2059 | /* The first argument is the file name. */ |
2060 | filename = tilde_expand (arg); | |
3017564a | 2061 | make_cleanup (xfree, filename); |
c906108c | 2062 | } |
db162d44 | 2063 | else |
7a78ae4e ND |
2064 | if (argcnt == 1) |
2065 | { | |
2066 | /* The second argument is always the text address at which | |
2067 | to load the program. */ | |
2068 | sect_opts[section_index].name = ".text"; | |
2069 | sect_opts[section_index].value = arg; | |
f414f22f | 2070 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2071 | { |
2072 | num_sect_opts *= 2; | |
5417f6dc | 2073 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2074 | xrealloc (sect_opts, |
5417f6dc | 2075 | num_sect_opts |
a39a16c4 MM |
2076 | * sizeof (struct sect_opt))); |
2077 | } | |
7a78ae4e ND |
2078 | } |
2079 | else | |
2080 | { | |
2081 | /* It's an option (starting with '-') or it's an argument | |
2082 | to an option */ | |
2083 | ||
2084 | if (*arg == '-') | |
2085 | { | |
78a4a9b9 AC |
2086 | if (strcmp (arg, "-readnow") == 0) |
2087 | flags |= OBJF_READNOW; | |
2088 | else if (strcmp (arg, "-s") == 0) | |
2089 | { | |
2090 | expecting_sec_name = 1; | |
2091 | expecting_sec_addr = 1; | |
2092 | } | |
7a78ae4e ND |
2093 | } |
2094 | else | |
2095 | { | |
2096 | if (expecting_sec_name) | |
db162d44 | 2097 | { |
7a78ae4e ND |
2098 | sect_opts[section_index].name = arg; |
2099 | expecting_sec_name = 0; | |
db162d44 EZ |
2100 | } |
2101 | else | |
7a78ae4e ND |
2102 | if (expecting_sec_addr) |
2103 | { | |
2104 | sect_opts[section_index].value = arg; | |
2105 | expecting_sec_addr = 0; | |
f414f22f | 2106 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2107 | { |
2108 | num_sect_opts *= 2; | |
5417f6dc | 2109 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2110 | xrealloc (sect_opts, |
5417f6dc | 2111 | num_sect_opts |
a39a16c4 MM |
2112 | * sizeof (struct sect_opt))); |
2113 | } | |
7a78ae4e ND |
2114 | } |
2115 | else | |
8a3fe4f8 | 2116 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2117 | } |
2118 | } | |
c906108c | 2119 | } |
c906108c | 2120 | |
927890d0 JB |
2121 | /* This command takes at least two arguments. The first one is a |
2122 | filename, and the second is the address where this file has been | |
2123 | loaded. Abort now if this address hasn't been provided by the | |
2124 | user. */ | |
2125 | if (section_index < 1) | |
2126 | error (_("The address where %s has been loaded is missing"), filename); | |
2127 | ||
db162d44 EZ |
2128 | /* Print the prompt for the query below. And save the arguments into |
2129 | a sect_addr_info structure to be passed around to other | |
2130 | functions. We have to split this up into separate print | |
bb599908 | 2131 | statements because hex_string returns a local static |
db162d44 | 2132 | string. */ |
5417f6dc | 2133 | |
a3f17187 | 2134 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2135 | section_addrs = alloc_section_addr_info (section_index); |
2136 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2137 | for (i = 0; i < section_index; i++) |
c906108c | 2138 | { |
db162d44 EZ |
2139 | CORE_ADDR addr; |
2140 | char *val = sect_opts[i].value; | |
2141 | char *sec = sect_opts[i].name; | |
5417f6dc | 2142 | |
ae822768 | 2143 | addr = parse_and_eval_address (val); |
db162d44 | 2144 | |
db162d44 EZ |
2145 | /* Here we store the section offsets in the order they were |
2146 | entered on the command line. */ | |
a39a16c4 MM |
2147 | section_addrs->other[sec_num].name = sec; |
2148 | section_addrs->other[sec_num].addr = addr; | |
5af949e3 UW |
2149 | printf_unfiltered ("\t%s_addr = %s\n", sec, |
2150 | paddress (gdbarch, addr)); | |
db162d44 EZ |
2151 | sec_num++; |
2152 | ||
5417f6dc | 2153 | /* The object's sections are initialized when a |
db162d44 | 2154 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2155 | This happens in reread_symbols. |
db162d44 EZ |
2156 | At this point, we don't know what file type this is, |
2157 | so we can't determine what section names are valid. */ | |
2acceee2 | 2158 | } |
db162d44 | 2159 | |
2acceee2 | 2160 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2161 | error (_("Not confirmed.")); |
c906108c | 2162 | |
7eedccfa PP |
2163 | symbol_file_add (filename, from_tty ? SYMFILE_VERBOSE : 0, |
2164 | section_addrs, flags); | |
c906108c SS |
2165 | |
2166 | /* Getting new symbols may change our opinion about what is | |
2167 | frameless. */ | |
2168 | reinit_frame_cache (); | |
db162d44 | 2169 | do_cleanups (my_cleanups); |
c906108c SS |
2170 | } |
2171 | \f | |
70992597 | 2172 | |
c906108c SS |
2173 | /* Re-read symbols if a symbol-file has changed. */ |
2174 | void | |
fba45db2 | 2175 | reread_symbols (void) |
c906108c SS |
2176 | { |
2177 | struct objfile *objfile; | |
2178 | long new_modtime; | |
2179 | int reread_one = 0; | |
2180 | struct stat new_statbuf; | |
2181 | int res; | |
2182 | ||
2183 | /* With the addition of shared libraries, this should be modified, | |
2184 | the load time should be saved in the partial symbol tables, since | |
2185 | different tables may come from different source files. FIXME. | |
2186 | This routine should then walk down each partial symbol table | |
2187 | and see if the symbol table that it originates from has been changed */ | |
2188 | ||
c5aa993b JM |
2189 | for (objfile = object_files; objfile; objfile = objfile->next) |
2190 | { | |
9cce227f TG |
2191 | /* solib-sunos.c creates one objfile with obfd. */ |
2192 | if (objfile->obfd == NULL) | |
2193 | continue; | |
2194 | ||
2195 | /* Separate debug objfiles are handled in the main objfile. */ | |
2196 | if (objfile->separate_debug_objfile_backlink) | |
2197 | continue; | |
2198 | ||
52d16ba8 | 2199 | #ifdef DEPRECATED_IBM6000_TARGET |
9cce227f TG |
2200 | /* If this object is from a shared library, then you should |
2201 | stat on the library name, not member name. */ | |
c906108c | 2202 | |
9cce227f TG |
2203 | if (objfile->obfd->my_archive) |
2204 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2205 | else | |
c906108c | 2206 | #endif |
9cce227f TG |
2207 | res = stat (objfile->name, &new_statbuf); |
2208 | if (res != 0) | |
2209 | { | |
2210 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ | |
2211 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), | |
2212 | objfile->name); | |
2213 | continue; | |
2214 | } | |
2215 | new_modtime = new_statbuf.st_mtime; | |
2216 | if (new_modtime != objfile->mtime) | |
2217 | { | |
2218 | struct cleanup *old_cleanups; | |
2219 | struct section_offsets *offsets; | |
2220 | int num_offsets; | |
2221 | char *obfd_filename; | |
2222 | ||
2223 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), | |
2224 | objfile->name); | |
2225 | ||
2226 | /* There are various functions like symbol_file_add, | |
2227 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2228 | appear to do what we want. But they have various other | |
2229 | effects which we *don't* want. So we just do stuff | |
2230 | ourselves. We don't worry about mapped files (for one thing, | |
2231 | any mapped file will be out of date). */ | |
2232 | ||
2233 | /* If we get an error, blow away this objfile (not sure if | |
2234 | that is the correct response for things like shared | |
2235 | libraries). */ | |
2236 | old_cleanups = make_cleanup_free_objfile (objfile); | |
2237 | /* We need to do this whenever any symbols go away. */ | |
2238 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); | |
2239 | ||
2240 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), | |
2241 | bfd_get_filename (exec_bfd)) == 0) | |
2242 | { | |
2243 | /* Reload EXEC_BFD without asking anything. */ | |
2244 | ||
2245 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2246 | } | |
2247 | ||
2248 | /* Clean up any state BFD has sitting around. We don't need | |
2249 | to close the descriptor but BFD lacks a way of closing the | |
2250 | BFD without closing the descriptor. */ | |
2251 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2252 | if (!bfd_close (objfile->obfd)) | |
2253 | error (_("Can't close BFD for %s: %s"), objfile->name, | |
2254 | bfd_errmsg (bfd_get_error ())); | |
874f5765 | 2255 | objfile->obfd = bfd_open_maybe_remote (obfd_filename); |
9cce227f TG |
2256 | if (objfile->obfd == NULL) |
2257 | error (_("Can't open %s to read symbols."), objfile->name); | |
2258 | else | |
2259 | objfile->obfd = gdb_bfd_ref (objfile->obfd); | |
2260 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
2261 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
2262 | error (_("Can't read symbols from %s: %s."), objfile->name, | |
2263 | bfd_errmsg (bfd_get_error ())); | |
2264 | ||
2265 | /* Save the offsets, we will nuke them with the rest of the | |
2266 | objfile_obstack. */ | |
2267 | num_offsets = objfile->num_sections; | |
2268 | offsets = ((struct section_offsets *) | |
2269 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); | |
2270 | memcpy (offsets, objfile->section_offsets, | |
2271 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2272 | ||
2273 | /* Remove any references to this objfile in the global | |
2274 | value lists. */ | |
2275 | preserve_values (objfile); | |
2276 | ||
2277 | /* Nuke all the state that we will re-read. Much of the following | |
2278 | code which sets things to NULL really is necessary to tell | |
2279 | other parts of GDB that there is nothing currently there. | |
2280 | ||
2281 | Try to keep the freeing order compatible with free_objfile. */ | |
2282 | ||
2283 | if (objfile->sf != NULL) | |
2284 | { | |
2285 | (*objfile->sf->sym_finish) (objfile); | |
2286 | } | |
2287 | ||
2288 | clear_objfile_data (objfile); | |
2289 | ||
15d123c9 | 2290 | /* Free the separate debug objfiles. It will be |
9cce227f | 2291 | automatically recreated by sym_read. */ |
15d123c9 | 2292 | free_objfile_separate_debug (objfile); |
9cce227f TG |
2293 | |
2294 | /* FIXME: Do we have to free a whole linked list, or is this | |
2295 | enough? */ | |
2296 | if (objfile->global_psymbols.list) | |
2297 | xfree (objfile->global_psymbols.list); | |
2298 | memset (&objfile->global_psymbols, 0, | |
2299 | sizeof (objfile->global_psymbols)); | |
2300 | if (objfile->static_psymbols.list) | |
2301 | xfree (objfile->static_psymbols.list); | |
2302 | memset (&objfile->static_psymbols, 0, | |
2303 | sizeof (objfile->static_psymbols)); | |
2304 | ||
2305 | /* Free the obstacks for non-reusable objfiles */ | |
2306 | bcache_xfree (objfile->psymbol_cache); | |
2307 | objfile->psymbol_cache = bcache_xmalloc (); | |
2308 | bcache_xfree (objfile->macro_cache); | |
2309 | objfile->macro_cache = bcache_xmalloc (); | |
2310 | bcache_xfree (objfile->filename_cache); | |
2311 | objfile->filename_cache = bcache_xmalloc (); | |
2312 | if (objfile->demangled_names_hash != NULL) | |
2313 | { | |
2314 | htab_delete (objfile->demangled_names_hash); | |
2315 | objfile->demangled_names_hash = NULL; | |
2316 | } | |
2317 | obstack_free (&objfile->objfile_obstack, 0); | |
2318 | objfile->sections = NULL; | |
2319 | objfile->symtabs = NULL; | |
2320 | objfile->psymtabs = NULL; | |
2321 | objfile->psymtabs_addrmap = NULL; | |
2322 | objfile->free_psymtabs = NULL; | |
2323 | objfile->cp_namespace_symtab = NULL; | |
2324 | objfile->msymbols = NULL; | |
2325 | objfile->deprecated_sym_private = NULL; | |
2326 | objfile->minimal_symbol_count = 0; | |
2327 | memset (&objfile->msymbol_hash, 0, | |
2328 | sizeof (objfile->msymbol_hash)); | |
2329 | memset (&objfile->msymbol_demangled_hash, 0, | |
2330 | sizeof (objfile->msymbol_demangled_hash)); | |
2331 | ||
2332 | objfile->psymbol_cache = bcache_xmalloc (); | |
2333 | objfile->macro_cache = bcache_xmalloc (); | |
2334 | objfile->filename_cache = bcache_xmalloc (); | |
2335 | /* obstack_init also initializes the obstack so it is | |
2336 | empty. We could use obstack_specify_allocation but | |
2337 | gdb_obstack.h specifies the alloc/dealloc | |
2338 | functions. */ | |
2339 | obstack_init (&objfile->objfile_obstack); | |
2340 | if (build_objfile_section_table (objfile)) | |
2341 | { | |
2342 | error (_("Can't find the file sections in `%s': %s"), | |
2343 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
2344 | } | |
2345 | terminate_minimal_symbol_table (objfile); | |
2346 | ||
2347 | /* We use the same section offsets as from last time. I'm not | |
2348 | sure whether that is always correct for shared libraries. */ | |
2349 | objfile->section_offsets = (struct section_offsets *) | |
2350 | obstack_alloc (&objfile->objfile_obstack, | |
2351 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2352 | memcpy (objfile->section_offsets, offsets, | |
2353 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); | |
2354 | objfile->num_sections = num_offsets; | |
2355 | ||
2356 | /* What the hell is sym_new_init for, anyway? The concept of | |
2357 | distinguishing between the main file and additional files | |
2358 | in this way seems rather dubious. */ | |
2359 | if (objfile == symfile_objfile) | |
c906108c | 2360 | { |
9cce227f | 2361 | (*objfile->sf->sym_new_init) (objfile); |
c906108c | 2362 | } |
9cce227f TG |
2363 | |
2364 | (*objfile->sf->sym_init) (objfile); | |
2365 | clear_complaints (&symfile_complaints, 1, 1); | |
2366 | /* Do not set flags as this is safe and we don't want to be | |
2367 | verbose. */ | |
2368 | (*objfile->sf->sym_read) (objfile, 0); | |
2369 | if (!objfile_has_symbols (objfile)) | |
c906108c | 2370 | { |
9cce227f TG |
2371 | wrap_here (""); |
2372 | printf_unfiltered (_("(no debugging symbols found)\n")); | |
2373 | wrap_here (""); | |
c5aa993b | 2374 | } |
9cce227f TG |
2375 | |
2376 | /* We're done reading the symbol file; finish off complaints. */ | |
2377 | clear_complaints (&symfile_complaints, 0, 1); | |
2378 | ||
2379 | /* Getting new symbols may change our opinion about what is | |
2380 | frameless. */ | |
2381 | ||
2382 | reinit_frame_cache (); | |
2383 | ||
2384 | /* Discard cleanups as symbol reading was successful. */ | |
2385 | discard_cleanups (old_cleanups); | |
2386 | ||
2387 | /* If the mtime has changed between the time we set new_modtime | |
2388 | and now, we *want* this to be out of date, so don't call stat | |
2389 | again now. */ | |
2390 | objfile->mtime = new_modtime; | |
2391 | reread_one = 1; | |
2392 | init_entry_point_info (objfile); | |
c906108c SS |
2393 | } |
2394 | } | |
c906108c SS |
2395 | |
2396 | if (reread_one) | |
ea53e89f | 2397 | { |
ff3536bc UW |
2398 | /* Notify objfiles that we've modified objfile sections. */ |
2399 | objfiles_changed (); | |
2400 | ||
ea53e89f JB |
2401 | clear_symtab_users (); |
2402 | /* At least one objfile has changed, so we can consider that | |
2403 | the executable we're debugging has changed too. */ | |
781b42b0 | 2404 | observer_notify_executable_changed (); |
ea53e89f | 2405 | } |
c906108c | 2406 | } |
c906108c SS |
2407 | \f |
2408 | ||
c5aa993b JM |
2409 | |
2410 | typedef struct | |
2411 | { | |
2412 | char *ext; | |
c906108c | 2413 | enum language lang; |
c5aa993b JM |
2414 | } |
2415 | filename_language; | |
c906108c | 2416 | |
c5aa993b | 2417 | static filename_language *filename_language_table; |
c906108c SS |
2418 | static int fl_table_size, fl_table_next; |
2419 | ||
2420 | static void | |
fba45db2 | 2421 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2422 | { |
2423 | if (fl_table_next >= fl_table_size) | |
2424 | { | |
2425 | fl_table_size += 10; | |
5417f6dc | 2426 | filename_language_table = |
25bf3106 PM |
2427 | xrealloc (filename_language_table, |
2428 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2429 | } |
2430 | ||
4fcf66da | 2431 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2432 | filename_language_table[fl_table_next].lang = lang; |
2433 | fl_table_next++; | |
2434 | } | |
2435 | ||
2436 | static char *ext_args; | |
920d2a44 AC |
2437 | static void |
2438 | show_ext_args (struct ui_file *file, int from_tty, | |
2439 | struct cmd_list_element *c, const char *value) | |
2440 | { | |
2441 | fprintf_filtered (file, _("\ | |
2442 | Mapping between filename extension and source language is \"%s\".\n"), | |
2443 | value); | |
2444 | } | |
c906108c SS |
2445 | |
2446 | static void | |
26c41df3 | 2447 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2448 | { |
2449 | int i; | |
2450 | char *cp = ext_args; | |
2451 | enum language lang; | |
2452 | ||
2453 | /* First arg is filename extension, starting with '.' */ | |
2454 | if (*cp != '.') | |
8a3fe4f8 | 2455 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2456 | |
2457 | /* Find end of first arg. */ | |
c5aa993b | 2458 | while (*cp && !isspace (*cp)) |
c906108c SS |
2459 | cp++; |
2460 | ||
2461 | if (*cp == '\0') | |
8a3fe4f8 | 2462 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2463 | ext_args); |
2464 | ||
2465 | /* Null-terminate first arg */ | |
c5aa993b | 2466 | *cp++ = '\0'; |
c906108c SS |
2467 | |
2468 | /* Find beginning of second arg, which should be a source language. */ | |
2469 | while (*cp && isspace (*cp)) | |
2470 | cp++; | |
2471 | ||
2472 | if (*cp == '\0') | |
8a3fe4f8 | 2473 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2474 | ext_args); |
2475 | ||
2476 | /* Lookup the language from among those we know. */ | |
2477 | lang = language_enum (cp); | |
2478 | ||
2479 | /* Now lookup the filename extension: do we already know it? */ | |
2480 | for (i = 0; i < fl_table_next; i++) | |
2481 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2482 | break; | |
2483 | ||
2484 | if (i >= fl_table_next) | |
2485 | { | |
2486 | /* new file extension */ | |
2487 | add_filename_language (ext_args, lang); | |
2488 | } | |
2489 | else | |
2490 | { | |
2491 | /* redefining a previously known filename extension */ | |
2492 | ||
2493 | /* if (from_tty) */ | |
2494 | /* query ("Really make files of type %s '%s'?", */ | |
2495 | /* ext_args, language_str (lang)); */ | |
2496 | ||
b8c9b27d | 2497 | xfree (filename_language_table[i].ext); |
4fcf66da | 2498 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2499 | filename_language_table[i].lang = lang; |
2500 | } | |
2501 | } | |
2502 | ||
2503 | static void | |
fba45db2 | 2504 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2505 | { |
2506 | int i; | |
2507 | ||
a3f17187 | 2508 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2509 | printf_filtered ("\n\n"); |
2510 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2511 | printf_filtered ("\t%s\t- %s\n", |
2512 | filename_language_table[i].ext, | |
c906108c SS |
2513 | language_str (filename_language_table[i].lang)); |
2514 | } | |
2515 | ||
2516 | static void | |
fba45db2 | 2517 | init_filename_language_table (void) |
c906108c SS |
2518 | { |
2519 | if (fl_table_size == 0) /* protect against repetition */ | |
2520 | { | |
2521 | fl_table_size = 20; | |
2522 | fl_table_next = 0; | |
c5aa993b | 2523 | filename_language_table = |
c906108c | 2524 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2525 | add_filename_language (".c", language_c); |
2526 | add_filename_language (".C", language_cplus); | |
2527 | add_filename_language (".cc", language_cplus); | |
2528 | add_filename_language (".cp", language_cplus); | |
2529 | add_filename_language (".cpp", language_cplus); | |
2530 | add_filename_language (".cxx", language_cplus); | |
2531 | add_filename_language (".c++", language_cplus); | |
2532 | add_filename_language (".java", language_java); | |
c906108c | 2533 | add_filename_language (".class", language_java); |
da2cf7e0 | 2534 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2535 | add_filename_language (".f", language_fortran); |
2536 | add_filename_language (".F", language_fortran); | |
2537 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2538 | add_filename_language (".sx", language_asm); |
c5aa993b | 2539 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2540 | add_filename_language (".pas", language_pascal); |
2541 | add_filename_language (".p", language_pascal); | |
2542 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2543 | add_filename_language (".adb", language_ada); |
2544 | add_filename_language (".ads", language_ada); | |
2545 | add_filename_language (".a", language_ada); | |
2546 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2547 | } |
2548 | } | |
2549 | ||
2550 | enum language | |
fba45db2 | 2551 | deduce_language_from_filename (char *filename) |
c906108c SS |
2552 | { |
2553 | int i; | |
2554 | char *cp; | |
2555 | ||
2556 | if (filename != NULL) | |
2557 | if ((cp = strrchr (filename, '.')) != NULL) | |
2558 | for (i = 0; i < fl_table_next; i++) | |
2559 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2560 | return filename_language_table[i].lang; | |
2561 | ||
2562 | return language_unknown; | |
2563 | } | |
2564 | \f | |
2565 | /* allocate_symtab: | |
2566 | ||
2567 | Allocate and partly initialize a new symbol table. Return a pointer | |
2568 | to it. error() if no space. | |
2569 | ||
2570 | Caller must set these fields: | |
c5aa993b JM |
2571 | LINETABLE(symtab) |
2572 | symtab->blockvector | |
2573 | symtab->dirname | |
2574 | symtab->free_code | |
2575 | symtab->free_ptr | |
c906108c SS |
2576 | */ |
2577 | ||
2578 | struct symtab * | |
fba45db2 | 2579 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2580 | { |
52f0bd74 | 2581 | struct symtab *symtab; |
c906108c SS |
2582 | |
2583 | symtab = (struct symtab *) | |
4a146b47 | 2584 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2585 | memset (symtab, 0, sizeof (*symtab)); |
10abe6bf TT |
2586 | symtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2587 | objfile->filename_cache); | |
c5aa993b JM |
2588 | symtab->fullname = NULL; |
2589 | symtab->language = deduce_language_from_filename (filename); | |
1c9e8358 | 2590 | symtab->debugformat = "unknown"; |
c906108c SS |
2591 | |
2592 | /* Hook it to the objfile it comes from */ | |
2593 | ||
c5aa993b JM |
2594 | symtab->objfile = objfile; |
2595 | symtab->next = objfile->symtabs; | |
2596 | objfile->symtabs = symtab; | |
c906108c | 2597 | |
c906108c SS |
2598 | return (symtab); |
2599 | } | |
2600 | ||
2601 | struct partial_symtab * | |
d85a05f0 | 2602 | allocate_psymtab (const char *filename, struct objfile *objfile) |
c906108c SS |
2603 | { |
2604 | struct partial_symtab *psymtab; | |
2605 | ||
c5aa993b | 2606 | if (objfile->free_psymtabs) |
c906108c | 2607 | { |
c5aa993b JM |
2608 | psymtab = objfile->free_psymtabs; |
2609 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2610 | } |
2611 | else | |
2612 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2613 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2614 | sizeof (struct partial_symtab)); |
2615 | ||
2616 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
10abe6bf TT |
2617 | psymtab->filename = (char *) bcache (filename, strlen (filename) + 1, |
2618 | objfile->filename_cache); | |
c5aa993b | 2619 | psymtab->symtab = NULL; |
c906108c SS |
2620 | |
2621 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2622 | Psymtabs are searched in most recent inserted -> least recent | |
2623 | inserted order. */ | |
2624 | ||
c5aa993b JM |
2625 | psymtab->objfile = objfile; |
2626 | psymtab->next = objfile->psymtabs; | |
2627 | objfile->psymtabs = psymtab; | |
c906108c SS |
2628 | #if 0 |
2629 | { | |
2630 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2631 | psymtab->objfile = objfile; |
2632 | psymtab->next = NULL; | |
2633 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2634 | while ((*prev_pst) != NULL) |
c5aa993b | 2635 | prev_pst = &((*prev_pst)->next); |
c906108c | 2636 | (*prev_pst) = psymtab; |
c5aa993b | 2637 | } |
c906108c | 2638 | #endif |
c5aa993b | 2639 | |
c906108c SS |
2640 | return (psymtab); |
2641 | } | |
2642 | ||
2643 | void | |
fba45db2 | 2644 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2645 | { |
2646 | struct partial_symtab **prev_pst; | |
2647 | ||
2648 | /* From dbxread.c: | |
2649 | Empty psymtabs happen as a result of header files which don't | |
2650 | have any symbols in them. There can be a lot of them. But this | |
2651 | check is wrong, in that a psymtab with N_SLINE entries but | |
2652 | nothing else is not empty, but we don't realize that. Fixing | |
2653 | that without slowing things down might be tricky. */ | |
2654 | ||
2655 | /* First, snip it out of the psymtab chain */ | |
2656 | ||
2657 | prev_pst = &(pst->objfile->psymtabs); | |
2658 | while ((*prev_pst) != pst) | |
2659 | prev_pst = &((*prev_pst)->next); | |
2660 | (*prev_pst) = pst->next; | |
2661 | ||
2662 | /* Next, put it on a free list for recycling */ | |
2663 | ||
2664 | pst->next = pst->objfile->free_psymtabs; | |
2665 | pst->objfile->free_psymtabs = pst; | |
2666 | } | |
c906108c | 2667 | \f |
c5aa993b | 2668 | |
c906108c SS |
2669 | /* Reset all data structures in gdb which may contain references to symbol |
2670 | table data. */ | |
2671 | ||
2672 | void | |
fba45db2 | 2673 | clear_symtab_users (void) |
c906108c SS |
2674 | { |
2675 | /* Someday, we should do better than this, by only blowing away | |
2676 | the things that really need to be blown. */ | |
c0501be5 DJ |
2677 | |
2678 | /* Clear the "current" symtab first, because it is no longer valid. | |
2679 | breakpoint_re_set may try to access the current symtab. */ | |
2680 | clear_current_source_symtab_and_line (); | |
2681 | ||
c906108c | 2682 | clear_displays (); |
c906108c | 2683 | breakpoint_re_set (); |
6c95b8df | 2684 | set_default_breakpoint (0, NULL, 0, 0, 0); |
c906108c | 2685 | clear_pc_function_cache (); |
06d3b283 | 2686 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2687 | |
2688 | /* Clear globals which might have pointed into a removed objfile. | |
2689 | FIXME: It's not clear which of these are supposed to persist | |
2690 | between expressions and which ought to be reset each time. */ | |
2691 | expression_context_block = NULL; | |
2692 | innermost_block = NULL; | |
8756216b DP |
2693 | |
2694 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2695 | varobj_invalidate (); | |
2696 | ||
c906108c SS |
2697 | } |
2698 | ||
74b7792f AC |
2699 | static void |
2700 | clear_symtab_users_cleanup (void *ignore) | |
2701 | { | |
2702 | clear_symtab_users (); | |
2703 | } | |
c906108c SS |
2704 | \f |
2705 | /* Allocate and partially fill a partial symtab. It will be | |
2706 | completely filled at the end of the symbol list. | |
2707 | ||
d4f3574e | 2708 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2709 | |
2710 | struct partial_symtab * | |
fba45db2 | 2711 | start_psymtab_common (struct objfile *objfile, |
d85a05f0 DJ |
2712 | struct section_offsets *section_offsets, |
2713 | const char *filename, | |
fba45db2 KB |
2714 | CORE_ADDR textlow, struct partial_symbol **global_syms, |
2715 | struct partial_symbol **static_syms) | |
c906108c SS |
2716 | { |
2717 | struct partial_symtab *psymtab; | |
2718 | ||
2719 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2720 | psymtab->section_offsets = section_offsets; |
2721 | psymtab->textlow = textlow; | |
2722 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2723 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2724 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2725 | return (psymtab); |
2726 | } | |
2727 | \f | |
2e618c13 AR |
2728 | /* Helper function, initialises partial symbol structure and stashes |
2729 | it into objfile's bcache. Note that our caching mechanism will | |
2730 | use all fields of struct partial_symbol to determine hash value of the | |
2731 | structure. In other words, having two symbols with the same name but | |
2732 | different domain (or address) is possible and correct. */ | |
2733 | ||
11d31d94 | 2734 | static const struct partial_symbol * |
04a679b8 TT |
2735 | add_psymbol_to_bcache (char *name, int namelength, int copy_name, |
2736 | domain_enum domain, | |
2e618c13 AR |
2737 | enum address_class class, |
2738 | long val, /* Value as a long */ | |
2739 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2740 | enum language language, struct objfile *objfile, | |
2741 | int *added) | |
2742 | { | |
69a943f0 TT |
2743 | /* psymbol is static so that there will be no uninitialized gaps in the |
2744 | structure which might contain random data, causing cache misses in | |
2745 | bcache. */ | |
2746 | static struct partial_symbol psymbol; | |
2747 | ||
2748 | /* However, we must ensure that the entire 'value' field has been | |
2749 | zeroed before assigning to it, because an assignment may not | |
2750 | write the entire field. */ | |
2751 | memset (&psymbol.ginfo.value, 0, sizeof (psymbol.ginfo.value)); | |
2e618c13 AR |
2752 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2753 | if (val != 0) | |
2754 | { | |
2755 | SYMBOL_VALUE (&psymbol) = val; | |
2756 | } | |
2757 | else | |
2758 | { | |
2759 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2760 | } | |
2761 | SYMBOL_SECTION (&psymbol) = 0; | |
2762 | SYMBOL_LANGUAGE (&psymbol) = language; | |
2763 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
2764 | PSYMBOL_CLASS (&psymbol) = class; | |
2765 | ||
04a679b8 | 2766 | SYMBOL_SET_NAMES (&psymbol, name, namelength, copy_name, objfile); |
2e618c13 AR |
2767 | |
2768 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
2769 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
2770 | objfile->psymbol_cache, added); | |
2e618c13 AR |
2771 | } |
2772 | ||
2773 | /* Helper function, adds partial symbol to the given partial symbol | |
2774 | list. */ | |
2775 | ||
2776 | static void | |
2777 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 2778 | const struct partial_symbol *psym, |
2e618c13 AR |
2779 | struct objfile *objfile) |
2780 | { | |
2781 | if (list->next >= list->list + list->size) | |
2782 | extend_psymbol_list (list, objfile); | |
11d31d94 | 2783 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
2784 | OBJSTAT (objfile, n_psyms++); |
2785 | } | |
2786 | ||
c906108c | 2787 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 2788 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
2789 | Return the partial symbol that has been added. */ |
2790 | ||
2791 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
2792 | symbol is so that callers can get access to the symbol's demangled | |
2793 | name, which they don't have any cheap way to determine otherwise. | |
2794 | (Currenly, dwarf2read.c is the only file who uses that information, | |
2795 | though it's possible that other readers might in the future.) | |
2796 | Elena wasn't thrilled about that, and I don't blame her, but we | |
2797 | couldn't come up with a better way to get that information. If | |
2798 | it's needed in other situations, we could consider breaking up | |
2799 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
2800 | cache. */ | |
2801 | ||
2802 | const struct partial_symbol * | |
04a679b8 TT |
2803 | add_psymbol_to_list (char *name, int namelength, int copy_name, |
2804 | domain_enum domain, | |
fba45db2 | 2805 | enum address_class class, |
2e618c13 AR |
2806 | struct psymbol_allocation_list *list, |
2807 | long val, /* Value as a long */ | |
fba45db2 KB |
2808 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
2809 | enum language language, struct objfile *objfile) | |
c906108c | 2810 | { |
11d31d94 | 2811 | const struct partial_symbol *psym; |
2de7ced7 | 2812 | |
2e618c13 | 2813 | int added; |
c906108c SS |
2814 | |
2815 | /* Stash the partial symbol away in the cache */ | |
04a679b8 | 2816 | psym = add_psymbol_to_bcache (name, namelength, copy_name, domain, class, |
2e618c13 | 2817 | val, coreaddr, language, objfile, &added); |
c906108c | 2818 | |
2e618c13 AR |
2819 | /* Do not duplicate global partial symbols. */ |
2820 | if (list == &objfile->global_psymbols | |
2821 | && !added) | |
2822 | return psym; | |
5c4e30ca | 2823 | |
2e618c13 AR |
2824 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
2825 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 2826 | return psym; |
c906108c SS |
2827 | } |
2828 | ||
c906108c SS |
2829 | /* Initialize storage for partial symbols. */ |
2830 | ||
2831 | void | |
fba45db2 | 2832 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2833 | { |
2834 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2835 | |
2836 | if (objfile->global_psymbols.list) | |
c906108c | 2837 | { |
2dc74dc1 | 2838 | xfree (objfile->global_psymbols.list); |
c906108c | 2839 | } |
c5aa993b | 2840 | if (objfile->static_psymbols.list) |
c906108c | 2841 | { |
2dc74dc1 | 2842 | xfree (objfile->static_psymbols.list); |
c906108c | 2843 | } |
c5aa993b | 2844 | |
c906108c SS |
2845 | /* Current best guess is that approximately a twentieth |
2846 | of the total symbols (in a debugging file) are global or static | |
2847 | oriented symbols */ | |
c906108c | 2848 | |
c5aa993b JM |
2849 | objfile->global_psymbols.size = total_symbols / 10; |
2850 | objfile->static_psymbols.size = total_symbols / 10; | |
2851 | ||
2852 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2853 | { |
c5aa993b JM |
2854 | objfile->global_psymbols.next = |
2855 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2856 | xmalloc ((objfile->global_psymbols.size |
2857 | * sizeof (struct partial_symbol *))); | |
c906108c | 2858 | } |
c5aa993b | 2859 | if (objfile->static_psymbols.size > 0) |
c906108c | 2860 | { |
c5aa993b JM |
2861 | objfile->static_psymbols.next = |
2862 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
2863 | xmalloc ((objfile->static_psymbols.size |
2864 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2865 | } |
2866 | } | |
2867 | ||
2868 | /* OVERLAYS: | |
2869 | The following code implements an abstraction for debugging overlay sections. | |
2870 | ||
2871 | The target model is as follows: | |
2872 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2873 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2874 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2875 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2876 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2877 | sections should be considered to be mapped from the VMA to the LMA. |
2878 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2879 | For instance, if a section has been mapped then its contents |
c5aa993b | 2880 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2881 | |
2882 | Two levels of debugger support for overlays are available. One is | |
2883 | "manual", in which the debugger relies on the user to tell it which | |
2884 | overlays are currently mapped. This level of support is | |
2885 | implemented entirely in the core debugger, and the information about | |
2886 | whether a section is mapped is kept in the objfile->obj_section table. | |
2887 | ||
2888 | The second level of support is "automatic", and is only available if | |
2889 | the target-specific code provides functionality to read the target's | |
2890 | overlay mapping table, and translate its contents for the debugger | |
2891 | (by updating the mapped state information in the obj_section tables). | |
2892 | ||
2893 | The interface is as follows: | |
c5aa993b JM |
2894 | User commands: |
2895 | overlay map <name> -- tell gdb to consider this section mapped | |
2896 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2897 | overlay list -- list the sections that GDB thinks are mapped | |
2898 | overlay read-target -- get the target's state of what's mapped | |
2899 | overlay off/manual/auto -- set overlay debugging state | |
2900 | Functional interface: | |
2901 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2902 | section, return that section. | |
5417f6dc | 2903 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b | 2904 | the pc, either in its VMA or its LMA |
714835d5 | 2905 | section_is_mapped(sect): true if overlay is marked as mapped |
c5aa993b JM |
2906 | section_is_overlay(sect): true if section's VMA != LMA |
2907 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2908 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2909 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2910 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2911 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2912 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2913 | either in VMA or LMA depending on whether | |
2914 | the symbol's section is currently mapped | |
c906108c SS |
2915 | */ |
2916 | ||
2917 | /* Overlay debugging state: */ | |
2918 | ||
d874f1e2 | 2919 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2920 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2921 | ||
c906108c | 2922 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 2923 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2924 | SECTION is loaded at an address different from where it will "run". */ |
2925 | ||
2926 | int | |
714835d5 | 2927 | section_is_overlay (struct obj_section *section) |
c906108c | 2928 | { |
714835d5 UW |
2929 | if (overlay_debugging && section) |
2930 | { | |
2931 | bfd *abfd = section->objfile->obfd; | |
2932 | asection *bfd_section = section->the_bfd_section; | |
2933 | ||
2934 | if (bfd_section_lma (abfd, bfd_section) != 0 | |
2935 | && bfd_section_lma (abfd, bfd_section) | |
2936 | != bfd_section_vma (abfd, bfd_section)) | |
2937 | return 1; | |
2938 | } | |
c906108c SS |
2939 | |
2940 | return 0; | |
2941 | } | |
2942 | ||
2943 | /* Function: overlay_invalidate_all (void) | |
2944 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2945 | ||
2946 | static void | |
fba45db2 | 2947 | overlay_invalidate_all (void) |
c906108c | 2948 | { |
c5aa993b | 2949 | struct objfile *objfile; |
c906108c SS |
2950 | struct obj_section *sect; |
2951 | ||
2952 | ALL_OBJSECTIONS (objfile, sect) | |
714835d5 UW |
2953 | if (section_is_overlay (sect)) |
2954 | sect->ovly_mapped = -1; | |
c906108c SS |
2955 | } |
2956 | ||
714835d5 | 2957 | /* Function: section_is_mapped (SECTION) |
5417f6dc | 2958 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2959 | |
2960 | Access to the ovly_mapped flag is restricted to this function, so | |
2961 | that we can do automatic update. If the global flag | |
2962 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2963 | overlay_invalidate_all. If the mapped state of the particular | |
2964 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2965 | ||
714835d5 UW |
2966 | int |
2967 | section_is_mapped (struct obj_section *osect) | |
c906108c | 2968 | { |
9216df95 UW |
2969 | struct gdbarch *gdbarch; |
2970 | ||
714835d5 | 2971 | if (osect == 0 || !section_is_overlay (osect)) |
c906108c SS |
2972 | return 0; |
2973 | ||
c5aa993b | 2974 | switch (overlay_debugging) |
c906108c SS |
2975 | { |
2976 | default: | |
d874f1e2 | 2977 | case ovly_off: |
c5aa993b | 2978 | return 0; /* overlay debugging off */ |
d874f1e2 | 2979 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 2980 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 2981 | there's really nothing useful to do here (can't really go auto) */ |
9216df95 UW |
2982 | gdbarch = get_objfile_arch (osect->objfile); |
2983 | if (gdbarch_overlay_update_p (gdbarch)) | |
c906108c SS |
2984 | { |
2985 | if (overlay_cache_invalid) | |
2986 | { | |
2987 | overlay_invalidate_all (); | |
2988 | overlay_cache_invalid = 0; | |
2989 | } | |
2990 | if (osect->ovly_mapped == -1) | |
9216df95 | 2991 | gdbarch_overlay_update (gdbarch, osect); |
c906108c SS |
2992 | } |
2993 | /* fall thru to manual case */ | |
d874f1e2 | 2994 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2995 | return osect->ovly_mapped == 1; |
2996 | } | |
2997 | } | |
2998 | ||
c906108c SS |
2999 | /* Function: pc_in_unmapped_range |
3000 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3001 | ||
3002 | CORE_ADDR | |
714835d5 | 3003 | pc_in_unmapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3004 | { |
714835d5 UW |
3005 | if (section_is_overlay (section)) |
3006 | { | |
3007 | bfd *abfd = section->objfile->obfd; | |
3008 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3009 | |
714835d5 UW |
3010 | /* We assume the LMA is relocated by the same offset as the VMA. */ |
3011 | bfd_vma size = bfd_get_section_size (bfd_section); | |
3012 | CORE_ADDR offset = obj_section_offset (section); | |
3013 | ||
3014 | if (bfd_get_section_lma (abfd, bfd_section) + offset <= pc | |
3015 | && pc < bfd_get_section_lma (abfd, bfd_section) + offset + size) | |
3016 | return 1; | |
3017 | } | |
c906108c | 3018 | |
c906108c SS |
3019 | return 0; |
3020 | } | |
3021 | ||
3022 | /* Function: pc_in_mapped_range | |
3023 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3024 | ||
3025 | CORE_ADDR | |
714835d5 | 3026 | pc_in_mapped_range (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3027 | { |
714835d5 UW |
3028 | if (section_is_overlay (section)) |
3029 | { | |
3030 | if (obj_section_addr (section) <= pc | |
3031 | && pc < obj_section_endaddr (section)) | |
3032 | return 1; | |
3033 | } | |
c906108c | 3034 | |
c906108c SS |
3035 | return 0; |
3036 | } | |
3037 | ||
9ec8e6a0 JB |
3038 | |
3039 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3040 | otherwise. */ | |
b9362cc7 | 3041 | static int |
714835d5 | 3042 | sections_overlap (struct obj_section *a, struct obj_section *b) |
9ec8e6a0 | 3043 | { |
714835d5 UW |
3044 | CORE_ADDR a_start = obj_section_addr (a); |
3045 | CORE_ADDR a_end = obj_section_endaddr (a); | |
3046 | CORE_ADDR b_start = obj_section_addr (b); | |
3047 | CORE_ADDR b_end = obj_section_endaddr (b); | |
9ec8e6a0 JB |
3048 | |
3049 | return (a_start < b_end && b_start < a_end); | |
3050 | } | |
3051 | ||
c906108c SS |
3052 | /* Function: overlay_unmapped_address (PC, SECTION) |
3053 | Returns the address corresponding to PC in the unmapped (load) range. | |
3054 | May be the same as PC. */ | |
3055 | ||
3056 | CORE_ADDR | |
714835d5 | 3057 | overlay_unmapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3058 | { |
714835d5 UW |
3059 | if (section_is_overlay (section) && pc_in_mapped_range (pc, section)) |
3060 | { | |
3061 | bfd *abfd = section->objfile->obfd; | |
3062 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3063 | |
714835d5 UW |
3064 | return pc + bfd_section_lma (abfd, bfd_section) |
3065 | - bfd_section_vma (abfd, bfd_section); | |
3066 | } | |
c906108c SS |
3067 | |
3068 | return pc; | |
3069 | } | |
3070 | ||
3071 | /* Function: overlay_mapped_address (PC, SECTION) | |
3072 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3073 | May be the same as PC. */ | |
3074 | ||
3075 | CORE_ADDR | |
714835d5 | 3076 | overlay_mapped_address (CORE_ADDR pc, struct obj_section *section) |
c906108c | 3077 | { |
714835d5 UW |
3078 | if (section_is_overlay (section) && pc_in_unmapped_range (pc, section)) |
3079 | { | |
3080 | bfd *abfd = section->objfile->obfd; | |
3081 | asection *bfd_section = section->the_bfd_section; | |
fbd35540 | 3082 | |
714835d5 UW |
3083 | return pc + bfd_section_vma (abfd, bfd_section) |
3084 | - bfd_section_lma (abfd, bfd_section); | |
3085 | } | |
c906108c SS |
3086 | |
3087 | return pc; | |
3088 | } | |
3089 | ||
3090 | ||
5417f6dc | 3091 | /* Function: symbol_overlayed_address |
c906108c SS |
3092 | Return one of two addresses (relative to the VMA or to the LMA), |
3093 | depending on whether the section is mapped or not. */ | |
3094 | ||
c5aa993b | 3095 | CORE_ADDR |
714835d5 | 3096 | symbol_overlayed_address (CORE_ADDR address, struct obj_section *section) |
c906108c SS |
3097 | { |
3098 | if (overlay_debugging) | |
3099 | { | |
3100 | /* If the symbol has no section, just return its regular address. */ | |
3101 | if (section == 0) | |
3102 | return address; | |
3103 | /* If the symbol's section is not an overlay, just return its address */ | |
3104 | if (!section_is_overlay (section)) | |
3105 | return address; | |
3106 | /* If the symbol's section is mapped, just return its address */ | |
3107 | if (section_is_mapped (section)) | |
3108 | return address; | |
3109 | /* | |
3110 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3111 | * then return its LOADED address rather than its vma address!! | |
3112 | */ | |
3113 | return overlay_unmapped_address (address, section); | |
3114 | } | |
3115 | return address; | |
3116 | } | |
3117 | ||
5417f6dc | 3118 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3119 | Return the best-match overlay section for PC: |
3120 | If PC matches a mapped overlay section's VMA, return that section. | |
3121 | Else if PC matches an unmapped section's VMA, return that section. | |
3122 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3123 | ||
714835d5 | 3124 | struct obj_section * |
fba45db2 | 3125 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3126 | { |
c5aa993b | 3127 | struct objfile *objfile; |
c906108c SS |
3128 | struct obj_section *osect, *best_match = NULL; |
3129 | ||
3130 | if (overlay_debugging) | |
3131 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3132 | if (section_is_overlay (osect)) |
c5aa993b | 3133 | { |
714835d5 | 3134 | if (pc_in_mapped_range (pc, osect)) |
c5aa993b | 3135 | { |
714835d5 UW |
3136 | if (section_is_mapped (osect)) |
3137 | return osect; | |
c5aa993b JM |
3138 | else |
3139 | best_match = osect; | |
3140 | } | |
714835d5 | 3141 | else if (pc_in_unmapped_range (pc, osect)) |
c5aa993b JM |
3142 | best_match = osect; |
3143 | } | |
714835d5 | 3144 | return best_match; |
c906108c SS |
3145 | } |
3146 | ||
3147 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3148 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3149 | currently marked as MAPPED, return that section. Else return NULL. */ |
3150 | ||
714835d5 | 3151 | struct obj_section * |
fba45db2 | 3152 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3153 | { |
c5aa993b | 3154 | struct objfile *objfile; |
c906108c SS |
3155 | struct obj_section *osect; |
3156 | ||
3157 | if (overlay_debugging) | |
3158 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 UW |
3159 | if (pc_in_mapped_range (pc, osect) && section_is_mapped (osect)) |
3160 | return osect; | |
c906108c SS |
3161 | |
3162 | return NULL; | |
3163 | } | |
3164 | ||
3165 | /* Function: list_overlays_command | |
3166 | Print a list of mapped sections and their PC ranges */ | |
3167 | ||
3168 | void | |
fba45db2 | 3169 | list_overlays_command (char *args, int from_tty) |
c906108c | 3170 | { |
c5aa993b JM |
3171 | int nmapped = 0; |
3172 | struct objfile *objfile; | |
c906108c SS |
3173 | struct obj_section *osect; |
3174 | ||
3175 | if (overlay_debugging) | |
3176 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3177 | if (section_is_mapped (osect)) |
c5aa993b | 3178 | { |
5af949e3 | 3179 | struct gdbarch *gdbarch = get_objfile_arch (objfile); |
c5aa993b JM |
3180 | const char *name; |
3181 | bfd_vma lma, vma; | |
3182 | int size; | |
3183 | ||
3184 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3185 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3186 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3187 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3188 | ||
3189 | printf_filtered ("Section %s, loaded at ", name); | |
5af949e3 | 3190 | fputs_filtered (paddress (gdbarch, lma), gdb_stdout); |
c5aa993b | 3191 | puts_filtered (" - "); |
5af949e3 | 3192 | fputs_filtered (paddress (gdbarch, lma + size), gdb_stdout); |
c5aa993b | 3193 | printf_filtered (", mapped at "); |
5af949e3 | 3194 | fputs_filtered (paddress (gdbarch, vma), gdb_stdout); |
c5aa993b | 3195 | puts_filtered (" - "); |
5af949e3 | 3196 | fputs_filtered (paddress (gdbarch, vma + size), gdb_stdout); |
c5aa993b JM |
3197 | puts_filtered ("\n"); |
3198 | ||
3199 | nmapped++; | |
3200 | } | |
c906108c | 3201 | if (nmapped == 0) |
a3f17187 | 3202 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3203 | } |
3204 | ||
3205 | /* Function: map_overlay_command | |
3206 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3207 | ||
3208 | void | |
fba45db2 | 3209 | map_overlay_command (char *args, int from_tty) |
c906108c | 3210 | { |
c5aa993b JM |
3211 | struct objfile *objfile, *objfile2; |
3212 | struct obj_section *sec, *sec2; | |
c906108c SS |
3213 | |
3214 | if (!overlay_debugging) | |
8a3fe4f8 | 3215 | error (_("\ |
515ad16c | 3216 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3217 | the 'overlay manual' command.")); |
c906108c SS |
3218 | |
3219 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3220 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3221 | |
3222 | /* First, find a section matching the user supplied argument */ | |
3223 | ALL_OBJSECTIONS (objfile, sec) | |
3224 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3225 | { |
3226 | /* Now, check to see if the section is an overlay. */ | |
714835d5 | 3227 | if (!section_is_overlay (sec)) |
c5aa993b JM |
3228 | continue; /* not an overlay section */ |
3229 | ||
3230 | /* Mark the overlay as "mapped" */ | |
3231 | sec->ovly_mapped = 1; | |
3232 | ||
3233 | /* Next, make a pass and unmap any sections that are | |
3234 | overlapped by this new section: */ | |
3235 | ALL_OBJSECTIONS (objfile2, sec2) | |
714835d5 | 3236 | if (sec2->ovly_mapped && sec != sec2 && sections_overlap (sec, sec2)) |
c5aa993b JM |
3237 | { |
3238 | if (info_verbose) | |
a3f17187 | 3239 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3240 | bfd_section_name (objfile->obfd, |
3241 | sec2->the_bfd_section)); | |
3242 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3243 | } | |
3244 | return; | |
3245 | } | |
8a3fe4f8 | 3246 | error (_("No overlay section called %s"), args); |
c906108c SS |
3247 | } |
3248 | ||
3249 | /* Function: unmap_overlay_command | |
5417f6dc | 3250 | Mark the overlay section as unmapped |
c906108c SS |
3251 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3252 | ||
3253 | void | |
fba45db2 | 3254 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3255 | { |
c5aa993b | 3256 | struct objfile *objfile; |
c906108c SS |
3257 | struct obj_section *sec; |
3258 | ||
3259 | if (!overlay_debugging) | |
8a3fe4f8 | 3260 | error (_("\ |
515ad16c | 3261 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3262 | the 'overlay manual' command.")); |
c906108c SS |
3263 | |
3264 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3265 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3266 | |
3267 | /* First, find a section matching the user supplied argument */ | |
3268 | ALL_OBJSECTIONS (objfile, sec) | |
3269 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3270 | { |
3271 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3272 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3273 | sec->ovly_mapped = 0; |
3274 | return; | |
3275 | } | |
8a3fe4f8 | 3276 | error (_("No overlay section called %s"), args); |
c906108c SS |
3277 | } |
3278 | ||
3279 | /* Function: overlay_auto_command | |
3280 | A utility command to turn on overlay debugging. | |
3281 | Possibly this should be done via a set/show command. */ | |
3282 | ||
3283 | static void | |
fba45db2 | 3284 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3285 | { |
d874f1e2 | 3286 | overlay_debugging = ovly_auto; |
1900040c | 3287 | enable_overlay_breakpoints (); |
c906108c | 3288 | if (info_verbose) |
a3f17187 | 3289 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3290 | } |
3291 | ||
3292 | /* Function: overlay_manual_command | |
3293 | A utility command to turn on overlay debugging. | |
3294 | Possibly this should be done via a set/show command. */ | |
3295 | ||
3296 | static void | |
fba45db2 | 3297 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3298 | { |
d874f1e2 | 3299 | overlay_debugging = ovly_on; |
1900040c | 3300 | disable_overlay_breakpoints (); |
c906108c | 3301 | if (info_verbose) |
a3f17187 | 3302 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3303 | } |
3304 | ||
3305 | /* Function: overlay_off_command | |
3306 | A utility command to turn on overlay debugging. | |
3307 | Possibly this should be done via a set/show command. */ | |
3308 | ||
3309 | static void | |
fba45db2 | 3310 | overlay_off_command (char *args, int from_tty) |
c906108c | 3311 | { |
d874f1e2 | 3312 | overlay_debugging = ovly_off; |
1900040c | 3313 | disable_overlay_breakpoints (); |
c906108c | 3314 | if (info_verbose) |
a3f17187 | 3315 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3316 | } |
3317 | ||
3318 | static void | |
fba45db2 | 3319 | overlay_load_command (char *args, int from_tty) |
c906108c | 3320 | { |
e17c207e UW |
3321 | struct gdbarch *gdbarch = get_current_arch (); |
3322 | ||
3323 | if (gdbarch_overlay_update_p (gdbarch)) | |
3324 | gdbarch_overlay_update (gdbarch, NULL); | |
c906108c | 3325 | else |
8a3fe4f8 | 3326 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3327 | } |
3328 | ||
3329 | /* Function: overlay_command | |
3330 | A place-holder for a mis-typed command */ | |
3331 | ||
3332 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3333 | struct cmd_list_element *overlaylist; | |
3334 | ||
3335 | static void | |
fba45db2 | 3336 | overlay_command (char *args, int from_tty) |
c906108c | 3337 | { |
c5aa993b | 3338 | printf_unfiltered |
c906108c SS |
3339 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3340 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3341 | } | |
3342 | ||
3343 | ||
3344 | /* Target Overlays for the "Simplest" overlay manager: | |
3345 | ||
5417f6dc RM |
3346 | This is GDB's default target overlay layer. It works with the |
3347 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3348 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3349 | so targets that use a different runtime overlay manager can |
c906108c SS |
3350 | substitute their own overlay_update function and take over the |
3351 | function pointer. | |
3352 | ||
3353 | The overlay_update function pokes around in the target's data structures | |
3354 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3355 | this information. | |
3356 | ||
3357 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3358 | unsigned _novlys; /# number of overlay sections #/ |
3359 | unsigned _ovly_table[_novlys][4] = { | |
3360 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3361 | {..., ..., ..., ...}, | |
3362 | } | |
3363 | unsigned _novly_regions; /# number of overlay regions #/ | |
3364 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3365 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3366 | {..., ..., ...}, | |
3367 | } | |
c906108c SS |
3368 | These functions will attempt to update GDB's mappedness state in the |
3369 | symbol section table, based on the target's mappedness state. | |
3370 | ||
3371 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3372 | attempt to detect when the cached copy is invalidated. The main | |
3373 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3374 | the cached table and re-reads only the entry for that section from | |
3375 | the target (whenever possible). | |
3376 | */ | |
3377 | ||
3378 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3379 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3380 | #if 0 |
c5aa993b | 3381 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3382 | #endif |
c5aa993b | 3383 | static unsigned cache_novlys = 0; |
c906108c | 3384 | #if 0 |
c5aa993b | 3385 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3386 | #endif |
3387 | static CORE_ADDR cache_ovly_table_base = 0; | |
3388 | #if 0 | |
3389 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3390 | #endif | |
c5aa993b JM |
3391 | enum ovly_index |
3392 | { | |
3393 | VMA, SIZE, LMA, MAPPED | |
3394 | }; | |
c906108c SS |
3395 | |
3396 | /* Throw away the cached copy of _ovly_table */ | |
3397 | static void | |
fba45db2 | 3398 | simple_free_overlay_table (void) |
c906108c SS |
3399 | { |
3400 | if (cache_ovly_table) | |
b8c9b27d | 3401 | xfree (cache_ovly_table); |
c5aa993b | 3402 | cache_novlys = 0; |
c906108c SS |
3403 | cache_ovly_table = NULL; |
3404 | cache_ovly_table_base = 0; | |
3405 | } | |
3406 | ||
3407 | #if 0 | |
3408 | /* Throw away the cached copy of _ovly_region_table */ | |
3409 | static void | |
fba45db2 | 3410 | simple_free_overlay_region_table (void) |
c906108c SS |
3411 | { |
3412 | if (cache_ovly_region_table) | |
b8c9b27d | 3413 | xfree (cache_ovly_region_table); |
c5aa993b | 3414 | cache_novly_regions = 0; |
c906108c SS |
3415 | cache_ovly_region_table = NULL; |
3416 | cache_ovly_region_table_base = 0; | |
3417 | } | |
3418 | #endif | |
3419 | ||
9216df95 | 3420 | /* Read an array of ints of size SIZE from the target into a local buffer. |
c906108c SS |
3421 | Convert to host order. int LEN is number of ints */ |
3422 | static void | |
9216df95 | 3423 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, |
e17a4113 | 3424 | int len, int size, enum bfd_endian byte_order) |
c906108c | 3425 | { |
34c0bd93 | 3426 | /* FIXME (alloca): Not safe if array is very large. */ |
9216df95 | 3427 | gdb_byte *buf = alloca (len * size); |
c5aa993b | 3428 | int i; |
c906108c | 3429 | |
9216df95 | 3430 | read_memory (memaddr, buf, len * size); |
c906108c | 3431 | for (i = 0; i < len; i++) |
e17a4113 | 3432 | myaddr[i] = extract_unsigned_integer (size * i + buf, size, byte_order); |
c906108c SS |
3433 | } |
3434 | ||
3435 | /* Find and grab a copy of the target _ovly_table | |
3436 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3437 | static int |
fba45db2 | 3438 | simple_read_overlay_table (void) |
c906108c | 3439 | { |
0d43edd1 | 3440 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
9216df95 UW |
3441 | struct gdbarch *gdbarch; |
3442 | int word_size; | |
e17a4113 | 3443 | enum bfd_endian byte_order; |
c906108c SS |
3444 | |
3445 | simple_free_overlay_table (); | |
9b27852e | 3446 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3447 | if (! novlys_msym) |
c906108c | 3448 | { |
8a3fe4f8 | 3449 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3450 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3451 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3452 | return 0; |
c906108c | 3453 | } |
0d43edd1 | 3454 | |
9b27852e | 3455 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3456 | if (! ovly_table_msym) |
3457 | { | |
8a3fe4f8 | 3458 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3459 | "`_ovly_table' array\n" |
8a3fe4f8 | 3460 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3461 | return 0; |
3462 | } | |
3463 | ||
9216df95 UW |
3464 | gdbarch = get_objfile_arch (msymbol_objfile (ovly_table_msym)); |
3465 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3466 | byte_order = gdbarch_byte_order (gdbarch); |
9216df95 | 3467 | |
e17a4113 UW |
3468 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), |
3469 | 4, byte_order); | |
0d43edd1 JB |
3470 | cache_ovly_table |
3471 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3472 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3473 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3474 | (unsigned int *) cache_ovly_table, |
e17a4113 | 3475 | cache_novlys * 4, word_size, byte_order); |
0d43edd1 | 3476 | |
c5aa993b | 3477 | return 1; /* SUCCESS */ |
c906108c SS |
3478 | } |
3479 | ||
3480 | #if 0 | |
3481 | /* Find and grab a copy of the target _ovly_region_table | |
3482 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3483 | static int |
fba45db2 | 3484 | simple_read_overlay_region_table (void) |
c906108c SS |
3485 | { |
3486 | struct minimal_symbol *msym; | |
e17a4113 UW |
3487 | struct gdbarch *gdbarch; |
3488 | int word_size; | |
3489 | enum bfd_endian byte_order; | |
c906108c SS |
3490 | |
3491 | simple_free_overlay_region_table (); | |
9b27852e | 3492 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
e17a4113 | 3493 | if (msym == NULL) |
c5aa993b | 3494 | return 0; /* failure */ |
e17a4113 UW |
3495 | |
3496 | gdbarch = get_objfile_arch (msymbol_objfile (msym)); | |
3497 | word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
3498 | byte_order = gdbarch_byte_order (gdbarch); | |
3499 | ||
3500 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), | |
3501 | 4, byte_order); | |
3502 | ||
c906108c SS |
3503 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3504 | if (cache_ovly_region_table != NULL) | |
3505 | { | |
9b27852e | 3506 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3507 | if (msym != NULL) |
3508 | { | |
3509 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3510 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3511 | (unsigned int *) cache_ovly_region_table, |
e17a4113 UW |
3512 | cache_novly_regions * 3, |
3513 | word_size, byte_order); | |
c906108c | 3514 | } |
c5aa993b JM |
3515 | else |
3516 | return 0; /* failure */ | |
c906108c | 3517 | } |
c5aa993b JM |
3518 | else |
3519 | return 0; /* failure */ | |
3520 | return 1; /* SUCCESS */ | |
c906108c SS |
3521 | } |
3522 | #endif | |
3523 | ||
5417f6dc | 3524 | /* Function: simple_overlay_update_1 |
c906108c SS |
3525 | A helper function for simple_overlay_update. Assuming a cached copy |
3526 | of _ovly_table exists, look through it to find an entry whose vma, | |
3527 | lma and size match those of OSECT. Re-read the entry and make sure | |
3528 | it still matches OSECT (else the table may no longer be valid). | |
3529 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3530 | success, 0 for failure. */ | |
3531 | ||
3532 | static int | |
fba45db2 | 3533 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3534 | { |
3535 | int i, size; | |
fbd35540 MS |
3536 | bfd *obfd = osect->objfile->obfd; |
3537 | asection *bsect = osect->the_bfd_section; | |
9216df95 UW |
3538 | struct gdbarch *gdbarch = get_objfile_arch (osect->objfile); |
3539 | int word_size = gdbarch_long_bit (gdbarch) / TARGET_CHAR_BIT; | |
e17a4113 | 3540 | enum bfd_endian byte_order = gdbarch_byte_order (gdbarch); |
c906108c | 3541 | |
2c500098 | 3542 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3543 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3544 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3545 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3546 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c | 3547 | { |
9216df95 UW |
3548 | read_target_long_array (cache_ovly_table_base + i * word_size, |
3549 | (unsigned int *) cache_ovly_table[i], | |
e17a4113 | 3550 | 4, word_size, byte_order); |
fbd35540 MS |
3551 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3552 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3553 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3554 | { |
3555 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3556 | return 1; | |
3557 | } | |
fbd35540 | 3558 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3559 | return 0; |
3560 | } | |
3561 | return 0; | |
3562 | } | |
3563 | ||
3564 | /* Function: simple_overlay_update | |
5417f6dc RM |
3565 | If OSECT is NULL, then update all sections' mapped state |
3566 | (after re-reading the entire target _ovly_table). | |
3567 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3568 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3569 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3570 | re-read the entire cache, and go ahead and update all sections. */ |
3571 | ||
1c772458 | 3572 | void |
fba45db2 | 3573 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3574 | { |
c5aa993b | 3575 | struct objfile *objfile; |
c906108c SS |
3576 | |
3577 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3578 | if (osect) | |
3579 | /* Have we got a cached copy of the target's overlay table? */ | |
3580 | if (cache_ovly_table != NULL) | |
3581 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3582 | if (cache_ovly_table_base == |
9b27852e | 3583 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3584 | /* Then go ahead and try to look up this single section in the cache */ |
3585 | if (simple_overlay_update_1 (osect)) | |
3586 | /* Found it! We're done. */ | |
3587 | return; | |
3588 | ||
3589 | /* Cached table no good: need to read the entire table anew. | |
3590 | Or else we want all the sections, in which case it's actually | |
3591 | more efficient to read the whole table in one block anyway. */ | |
3592 | ||
0d43edd1 JB |
3593 | if (! simple_read_overlay_table ()) |
3594 | return; | |
3595 | ||
c906108c SS |
3596 | /* Now may as well update all sections, even if only one was requested. */ |
3597 | ALL_OBJSECTIONS (objfile, osect) | |
714835d5 | 3598 | if (section_is_overlay (osect)) |
c5aa993b JM |
3599 | { |
3600 | int i, size; | |
fbd35540 MS |
3601 | bfd *obfd = osect->objfile->obfd; |
3602 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3603 | |
2c500098 | 3604 | size = bfd_get_section_size (bsect); |
c5aa993b | 3605 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3606 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3607 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3608 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3609 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3610 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3611 | break; /* finished with inner for loop: break out */ | |
3612 | } | |
3613 | } | |
c906108c SS |
3614 | } |
3615 | ||
086df311 DJ |
3616 | /* Set the output sections and output offsets for section SECTP in |
3617 | ABFD. The relocation code in BFD will read these offsets, so we | |
3618 | need to be sure they're initialized. We map each section to itself, | |
3619 | with no offset; this means that SECTP->vma will be honored. */ | |
3620 | ||
3621 | static void | |
3622 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3623 | { | |
3624 | sectp->output_section = sectp; | |
3625 | sectp->output_offset = 0; | |
3626 | } | |
3627 | ||
ac8035ab TG |
3628 | /* Default implementation for sym_relocate. */ |
3629 | ||
3630 | ||
3631 | bfd_byte * | |
3632 | default_symfile_relocate (struct objfile *objfile, asection *sectp, | |
3633 | bfd_byte *buf) | |
3634 | { | |
3635 | bfd *abfd = objfile->obfd; | |
3636 | ||
3637 | /* We're only interested in sections with relocation | |
3638 | information. */ | |
3639 | if ((sectp->flags & SEC_RELOC) == 0) | |
3640 | return NULL; | |
3641 | ||
3642 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3643 | all sections begin at 0. */ | |
3644 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3645 | ||
3646 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); | |
3647 | } | |
3648 | ||
086df311 DJ |
3649 | /* Relocate the contents of a debug section SECTP in ABFD. The |
3650 | contents are stored in BUF if it is non-NULL, or returned in a | |
3651 | malloc'd buffer otherwise. | |
3652 | ||
3653 | For some platforms and debug info formats, shared libraries contain | |
3654 | relocations against the debug sections (particularly for DWARF-2; | |
3655 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3656 | the version of the linker in use). Also, ELF object files naturally | |
3657 | have unresolved relocations for their debug sections. We need to apply | |
065a2c74 PA |
3658 | the relocations in order to get the locations of symbols correct. |
3659 | Another example that may require relocation processing, is the | |
3660 | DWARF-2 .eh_frame section in .o files, although it isn't strictly a | |
3661 | debug section. */ | |
086df311 DJ |
3662 | |
3663 | bfd_byte * | |
ac8035ab TG |
3664 | symfile_relocate_debug_section (struct objfile *objfile, |
3665 | asection *sectp, bfd_byte *buf) | |
086df311 | 3666 | { |
ac8035ab | 3667 | gdb_assert (objfile->sf->sym_relocate); |
086df311 | 3668 | |
ac8035ab | 3669 | return (*objfile->sf->sym_relocate) (objfile, sectp, buf); |
086df311 | 3670 | } |
c906108c | 3671 | |
31d99776 DJ |
3672 | struct symfile_segment_data * |
3673 | get_symfile_segment_data (bfd *abfd) | |
3674 | { | |
3675 | struct sym_fns *sf = find_sym_fns (abfd); | |
3676 | ||
3677 | if (sf == NULL) | |
3678 | return NULL; | |
3679 | ||
3680 | return sf->sym_segments (abfd); | |
3681 | } | |
3682 | ||
3683 | void | |
3684 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3685 | { | |
3686 | xfree (data->segment_bases); | |
3687 | xfree (data->segment_sizes); | |
3688 | xfree (data->segment_info); | |
3689 | xfree (data); | |
3690 | } | |
3691 | ||
28c32713 JB |
3692 | |
3693 | /* Given: | |
3694 | - DATA, containing segment addresses from the object file ABFD, and | |
3695 | the mapping from ABFD's sections onto the segments that own them, | |
3696 | and | |
3697 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3698 | segment addresses reported by the target, | |
3699 | store the appropriate offsets for each section in OFFSETS. | |
3700 | ||
3701 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3702 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
3703 | ||
8d385431 DJ |
3704 | If there are more entries, then ignore the extra. The target may |
3705 | not be able to distinguish between an empty data segment and a | |
3706 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
3707 | int |
3708 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
3709 | struct section_offsets *offsets, | |
3710 | int num_segment_bases, | |
3711 | const CORE_ADDR *segment_bases) | |
3712 | { | |
3713 | int i; | |
3714 | asection *sect; | |
3715 | ||
28c32713 JB |
3716 | /* It doesn't make sense to call this function unless you have some |
3717 | segment base addresses. */ | |
202b96c1 | 3718 | gdb_assert (num_segment_bases > 0); |
28c32713 | 3719 | |
31d99776 DJ |
3720 | /* If we do not have segment mappings for the object file, we |
3721 | can not relocate it by segments. */ | |
3722 | gdb_assert (data != NULL); | |
3723 | gdb_assert (data->num_segments > 0); | |
3724 | ||
31d99776 DJ |
3725 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
3726 | { | |
31d99776 DJ |
3727 | int which = data->segment_info[i]; |
3728 | ||
28c32713 JB |
3729 | gdb_assert (0 <= which && which <= data->num_segments); |
3730 | ||
3731 | /* Don't bother computing offsets for sections that aren't | |
3732 | loaded as part of any segment. */ | |
3733 | if (! which) | |
3734 | continue; | |
3735 | ||
3736 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
3737 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 3738 | if (which > num_segment_bases) |
28c32713 | 3739 | which = num_segment_bases; |
31d99776 | 3740 | |
28c32713 JB |
3741 | offsets->offsets[i] = (segment_bases[which - 1] |
3742 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
3743 | } |
3744 | ||
3745 | return 1; | |
3746 | } | |
3747 | ||
3748 | static void | |
3749 | symfile_find_segment_sections (struct objfile *objfile) | |
3750 | { | |
3751 | bfd *abfd = objfile->obfd; | |
3752 | int i; | |
3753 | asection *sect; | |
3754 | struct symfile_segment_data *data; | |
3755 | ||
3756 | data = get_symfile_segment_data (objfile->obfd); | |
3757 | if (data == NULL) | |
3758 | return; | |
3759 | ||
3760 | if (data->num_segments != 1 && data->num_segments != 2) | |
3761 | { | |
3762 | free_symfile_segment_data (data); | |
3763 | return; | |
3764 | } | |
3765 | ||
3766 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
3767 | { | |
3768 | CORE_ADDR vma; | |
3769 | int which = data->segment_info[i]; | |
3770 | ||
3771 | if (which == 1) | |
3772 | { | |
3773 | if (objfile->sect_index_text == -1) | |
3774 | objfile->sect_index_text = sect->index; | |
3775 | ||
3776 | if (objfile->sect_index_rodata == -1) | |
3777 | objfile->sect_index_rodata = sect->index; | |
3778 | } | |
3779 | else if (which == 2) | |
3780 | { | |
3781 | if (objfile->sect_index_data == -1) | |
3782 | objfile->sect_index_data = sect->index; | |
3783 | ||
3784 | if (objfile->sect_index_bss == -1) | |
3785 | objfile->sect_index_bss = sect->index; | |
3786 | } | |
3787 | } | |
3788 | ||
3789 | free_symfile_segment_data (data); | |
3790 | } | |
3791 | ||
c906108c | 3792 | void |
fba45db2 | 3793 | _initialize_symfile (void) |
c906108c SS |
3794 | { |
3795 | struct cmd_list_element *c; | |
c5aa993b | 3796 | |
1a966eab AC |
3797 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
3798 | Load symbol table from executable file FILE.\n\ | |
c906108c | 3799 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 3800 | to execute."), &cmdlist); |
5ba2abeb | 3801 | set_cmd_completer (c, filename_completer); |
c906108c | 3802 | |
1a966eab | 3803 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 3804 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 3805 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 3806 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3807 | The optional arguments are section-name section-address pairs and\n\ |
3808 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 3809 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 3810 | &cmdlist); |
5ba2abeb | 3811 | set_cmd_completer (c, filename_completer); |
c906108c | 3812 | |
1a966eab AC |
3813 | c = add_cmd ("load", class_files, load_command, _("\ |
3814 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
3815 | for access from GDB.\n\ |
3816 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 3817 | set_cmd_completer (c, filename_completer); |
c906108c | 3818 | |
5bf193a2 AC |
3819 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
3820 | &symbol_reloading, _("\ | |
3821 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
3822 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
3823 | NULL, | |
920d2a44 | 3824 | show_symbol_reloading, |
5bf193a2 | 3825 | &setlist, &showlist); |
c906108c | 3826 | |
c5aa993b | 3827 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 3828 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
3829 | "overlay ", 0, &cmdlist); |
3830 | ||
3831 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3832 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3833 | ||
c5aa993b | 3834 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 3835 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 3836 | |
c5aa993b | 3837 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 3838 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 3839 | |
c5aa993b | 3840 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 3841 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 3842 | |
c5aa993b | 3843 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 3844 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 3845 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 3846 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 3847 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 3848 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 3849 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 3850 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
3851 | |
3852 | /* Filename extension to source language lookup table: */ | |
3853 | init_filename_language_table (); | |
26c41df3 AC |
3854 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
3855 | &ext_args, _("\ | |
3856 | Set mapping between filename extension and source language."), _("\ | |
3857 | Show mapping between filename extension and source language."), _("\ | |
3858 | Usage: set extension-language .foo bar"), | |
3859 | set_ext_lang_command, | |
920d2a44 | 3860 | show_ext_args, |
26c41df3 | 3861 | &setlist, &showlist); |
c906108c | 3862 | |
c5aa993b | 3863 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 3864 | _("All filename extensions associated with a source language.")); |
917317f4 | 3865 | |
525226b5 AC |
3866 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
3867 | &debug_file_directory, _("\ | |
24ddea62 JK |
3868 | Set the directories where separate debug symbols are searched for."), _("\ |
3869 | Show the directories where separate debug symbols are searched for."), _("\ | |
525226b5 AC |
3870 | Separate debug symbols are first searched for in the same\n\ |
3871 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
3872 | and lastly at the path of the directory of the binary with\n\ | |
24ddea62 | 3873 | each global debug-file-directory component prepended."), |
525226b5 | 3874 | NULL, |
920d2a44 | 3875 | show_debug_file_directory, |
525226b5 | 3876 | &setlist, &showlist); |
c906108c | 3877 | } |