Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c AC |
2 | |
3 | Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, | |
cf5b2f1b | 4 | 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
8926118c | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | #include "defs.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" | |
c5aa993b | 41 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 42 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 43 | #include "gdb-stabs.h" |
04ea0df1 | 44 | #include "gdb_obstack.h" |
d75b5104 | 45 | #include "completer.h" |
af5f3db6 | 46 | #include "bcache.h" |
2de7ced7 | 47 | #include "hashtab.h" |
dbda9972 | 48 | #include "readline/readline.h" |
7e8580c1 | 49 | #include "gdb_assert.h" |
fe898f56 | 50 | #include "block.h" |
c906108c | 51 | |
c906108c SS |
52 | #include <sys/types.h> |
53 | #include <fcntl.h> | |
54 | #include "gdb_string.h" | |
55 | #include "gdb_stat.h" | |
56 | #include <ctype.h> | |
57 | #include <time.h> | |
c906108c SS |
58 | |
59 | #ifndef O_BINARY | |
60 | #define O_BINARY 0 | |
61 | #endif | |
62 | ||
63 | #ifdef HPUXHPPA | |
64 | ||
65 | /* Some HP-UX related globals to clear when a new "main" | |
66 | symbol file is loaded. HP-specific. */ | |
67 | ||
c906108c SS |
68 | extern int hp_cxx_exception_support_initialized; |
69 | #define RESET_HP_UX_GLOBALS() do {\ | |
f83f82bc | 70 | deprecated_hp_som_som_object_present = 0; /* indicates HP-compiled code */ \ |
c906108c SS |
71 | hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \ |
72 | } while (0) | |
73 | #endif | |
74 | ||
9a4105ab AC |
75 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
76 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
77 | unsigned long section_sent, |
78 | unsigned long section_size, | |
79 | unsigned long total_sent, | |
c2d11a7d | 80 | unsigned long total_size); |
5417f6dc | 81 | void (*pre_add_symbol_hook) (const char *); |
507f3c78 | 82 | void (*post_add_symbol_hook) (void); |
9a4105ab | 83 | void (*deprecated_target_new_objfile_hook) (struct objfile *); |
c906108c | 84 | |
74b7792f AC |
85 | static void clear_symtab_users_cleanup (void *ignore); |
86 | ||
c906108c | 87 | /* Global variables owned by this file */ |
c5aa993b | 88 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 89 | |
c906108c SS |
90 | /* External variables and functions referenced. */ |
91 | ||
a14ed312 | 92 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
93 | |
94 | /* Functions this file defines */ | |
95 | ||
96 | #if 0 | |
a14ed312 KB |
97 | static int simple_read_overlay_region_table (void); |
98 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
99 | #endif |
100 | ||
a14ed312 | 101 | static void set_initial_language (void); |
c906108c | 102 | |
a14ed312 | 103 | static void load_command (char *, int); |
c906108c | 104 | |
d7db6da9 FN |
105 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
106 | ||
a14ed312 | 107 | static void add_symbol_file_command (char *, int); |
c906108c | 108 | |
a14ed312 | 109 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 110 | |
5b5d99cf JB |
111 | static void reread_separate_symbols (struct objfile *objfile); |
112 | ||
a14ed312 | 113 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 114 | |
a14ed312 | 115 | bfd *symfile_bfd_open (char *); |
c906108c | 116 | |
0e931cf0 JB |
117 | int get_section_index (struct objfile *, char *); |
118 | ||
a14ed312 | 119 | static void find_sym_fns (struct objfile *); |
c906108c | 120 | |
a14ed312 | 121 | static void decrement_reading_symtab (void *); |
c906108c | 122 | |
a14ed312 | 123 | static void overlay_invalidate_all (void); |
c906108c | 124 | |
a14ed312 | 125 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 126 | |
a14ed312 | 127 | void list_overlays_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | void map_overlay_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | void unmap_overlay_command (char *, int); |
c906108c | 132 | |
a14ed312 | 133 | static void overlay_auto_command (char *, int); |
c906108c | 134 | |
a14ed312 | 135 | static void overlay_manual_command (char *, int); |
c906108c | 136 | |
a14ed312 | 137 | static void overlay_off_command (char *, int); |
c906108c | 138 | |
a14ed312 | 139 | static void overlay_load_command (char *, int); |
c906108c | 140 | |
a14ed312 | 141 | static void overlay_command (char *, int); |
c906108c | 142 | |
a14ed312 | 143 | static void simple_free_overlay_table (void); |
c906108c | 144 | |
a14ed312 | 145 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 146 | |
a14ed312 | 147 | static int simple_read_overlay_table (void); |
c906108c | 148 | |
a14ed312 | 149 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 150 | |
a14ed312 | 151 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 152 | |
a14ed312 | 153 | static void set_ext_lang_command (char *args, int from_tty); |
392a587b | 154 | |
a14ed312 | 155 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 156 | |
5b5d99cf JB |
157 | static char *find_separate_debug_file (struct objfile *objfile); |
158 | ||
a14ed312 | 159 | static void init_filename_language_table (void); |
392a587b | 160 | |
a14ed312 | 161 | void _initialize_symfile (void); |
c906108c SS |
162 | |
163 | /* List of all available sym_fns. On gdb startup, each object file reader | |
164 | calls add_symtab_fns() to register information on each format it is | |
165 | prepared to read. */ | |
166 | ||
167 | static struct sym_fns *symtab_fns = NULL; | |
168 | ||
169 | /* Flag for whether user will be reloading symbols multiple times. | |
170 | Defaults to ON for VxWorks, otherwise OFF. */ | |
171 | ||
172 | #ifdef SYMBOL_RELOADING_DEFAULT | |
173 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
174 | #else | |
175 | int symbol_reloading = 0; | |
176 | #endif | |
177 | ||
b7209cb4 FF |
178 | /* If non-zero, shared library symbols will be added automatically |
179 | when the inferior is created, new libraries are loaded, or when | |
180 | attaching to the inferior. This is almost always what users will | |
181 | want to have happen; but for very large programs, the startup time | |
182 | will be excessive, and so if this is a problem, the user can clear | |
183 | this flag and then add the shared library symbols as needed. Note | |
184 | that there is a potential for confusion, since if the shared | |
c906108c | 185 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 186 | report all the functions that are actually present. */ |
c906108c SS |
187 | |
188 | int auto_solib_add = 1; | |
b7209cb4 FF |
189 | |
190 | /* For systems that support it, a threshold size in megabytes. If | |
191 | automatically adding a new library's symbol table to those already | |
192 | known to the debugger would cause the total shared library symbol | |
193 | size to exceed this threshhold, then the shlib's symbols are not | |
194 | added. The threshold is ignored if the user explicitly asks for a | |
195 | shlib to be added, such as when using the "sharedlibrary" | |
196 | command. */ | |
197 | ||
198 | int auto_solib_limit; | |
c906108c | 199 | \f |
c5aa993b | 200 | |
0fe19209 DC |
201 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
202 | for the comparison. */ | |
c906108c SS |
203 | |
204 | static int | |
0cd64fe2 | 205 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 206 | { |
0fe19209 DC |
207 | struct partial_symbol *const *s1 = s1p; |
208 | struct partial_symbol *const *s2 = s2p; | |
209 | ||
4725b721 PH |
210 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
211 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
212 | } |
213 | ||
214 | void | |
fba45db2 | 215 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
216 | { |
217 | /* Sort the global list; don't sort the static list */ | |
218 | ||
c5aa993b JM |
219 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
220 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
221 | compare_psymbols); |
222 | } | |
223 | ||
c906108c SS |
224 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
225 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
226 | Note that the string at PTR does not have to be null terminated, I.E. it | |
227 | may be part of a larger string and we are only saving a substring. */ | |
228 | ||
229 | char * | |
63ca651f | 230 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 231 | { |
52f0bd74 | 232 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
233 | /* Open-coded memcpy--saves function call time. These strings are usually |
234 | short. FIXME: Is this really still true with a compiler that can | |
235 | inline memcpy? */ | |
236 | { | |
aa1ee363 AC |
237 | const char *p1 = ptr; |
238 | char *p2 = p; | |
63ca651f | 239 | const char *end = ptr + size; |
c906108c SS |
240 | while (p1 != end) |
241 | *p2++ = *p1++; | |
242 | } | |
243 | p[size] = 0; | |
244 | return p; | |
245 | } | |
246 | ||
247 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
248 | in the obstack pointed to by OBSTACKP. */ | |
249 | ||
250 | char * | |
fba45db2 KB |
251 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
252 | const char *s3) | |
c906108c | 253 | { |
52f0bd74 AC |
254 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
255 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
256 | strcpy (val, s1); |
257 | strcat (val, s2); | |
258 | strcat (val, s3); | |
259 | return val; | |
260 | } | |
261 | ||
262 | /* True if we are nested inside psymtab_to_symtab. */ | |
263 | ||
264 | int currently_reading_symtab = 0; | |
265 | ||
266 | static void | |
fba45db2 | 267 | decrement_reading_symtab (void *dummy) |
c906108c SS |
268 | { |
269 | currently_reading_symtab--; | |
270 | } | |
271 | ||
272 | /* Get the symbol table that corresponds to a partial_symtab. | |
273 | This is fast after the first time you do it. In fact, there | |
274 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
275 | case inline. */ | |
276 | ||
277 | struct symtab * | |
aa1ee363 | 278 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
279 | { |
280 | /* If it's been looked up before, return it. */ | |
281 | if (pst->symtab) | |
282 | return pst->symtab; | |
283 | ||
284 | /* If it has not yet been read in, read it. */ | |
285 | if (!pst->readin) | |
c5aa993b | 286 | { |
c906108c SS |
287 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
288 | currently_reading_symtab++; | |
289 | (*pst->read_symtab) (pst); | |
290 | do_cleanups (back_to); | |
291 | } | |
292 | ||
293 | return pst->symtab; | |
294 | } | |
295 | ||
5417f6dc RM |
296 | /* Remember the lowest-addressed loadable section we've seen. |
297 | This function is called via bfd_map_over_sections. | |
c906108c SS |
298 | |
299 | In case of equal vmas, the section with the largest size becomes the | |
300 | lowest-addressed loadable section. | |
301 | ||
302 | If the vmas and sizes are equal, the last section is considered the | |
303 | lowest-addressed loadable section. */ | |
304 | ||
305 | void | |
4efb68b1 | 306 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 307 | { |
c5aa993b | 308 | asection **lowest = (asection **) obj; |
c906108c SS |
309 | |
310 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
311 | return; | |
312 | if (!*lowest) | |
313 | *lowest = sect; /* First loadable section */ | |
314 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
315 | *lowest = sect; /* A lower loadable section */ | |
316 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
317 | && (bfd_section_size (abfd, (*lowest)) | |
318 | <= bfd_section_size (abfd, sect))) | |
319 | *lowest = sect; | |
320 | } | |
321 | ||
a39a16c4 MM |
322 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
323 | ||
324 | struct section_addr_info * | |
325 | alloc_section_addr_info (size_t num_sections) | |
326 | { | |
327 | struct section_addr_info *sap; | |
328 | size_t size; | |
329 | ||
330 | size = (sizeof (struct section_addr_info) | |
331 | + sizeof (struct other_sections) * (num_sections - 1)); | |
332 | sap = (struct section_addr_info *) xmalloc (size); | |
333 | memset (sap, 0, size); | |
334 | sap->num_sections = num_sections; | |
335 | ||
336 | return sap; | |
337 | } | |
62557bbc KB |
338 | |
339 | /* Build (allocate and populate) a section_addr_info struct from | |
340 | an existing section table. */ | |
341 | ||
342 | extern struct section_addr_info * | |
343 | build_section_addr_info_from_section_table (const struct section_table *start, | |
344 | const struct section_table *end) | |
345 | { | |
346 | struct section_addr_info *sap; | |
347 | const struct section_table *stp; | |
348 | int oidx; | |
349 | ||
a39a16c4 | 350 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
351 | |
352 | for (stp = start, oidx = 0; stp != end; stp++) | |
353 | { | |
5417f6dc | 354 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 355 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 356 | && oidx < end - start) |
62557bbc KB |
357 | { |
358 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 359 | sap->other[oidx].name |
fbd35540 | 360 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
361 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
362 | oidx++; | |
363 | } | |
364 | } | |
365 | ||
366 | return sap; | |
367 | } | |
368 | ||
369 | ||
370 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
371 | ||
372 | extern void | |
373 | free_section_addr_info (struct section_addr_info *sap) | |
374 | { | |
375 | int idx; | |
376 | ||
a39a16c4 | 377 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 378 | if (sap->other[idx].name) |
b8c9b27d KB |
379 | xfree (sap->other[idx].name); |
380 | xfree (sap); | |
62557bbc KB |
381 | } |
382 | ||
383 | ||
e8289572 JB |
384 | /* Initialize OBJFILE's sect_index_* members. */ |
385 | static void | |
386 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 387 | { |
e8289572 | 388 | asection *sect; |
c906108c | 389 | int i; |
5417f6dc | 390 | |
b8fbeb18 | 391 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 392 | if (sect) |
b8fbeb18 EZ |
393 | objfile->sect_index_text = sect->index; |
394 | ||
395 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 396 | if (sect) |
b8fbeb18 EZ |
397 | objfile->sect_index_data = sect->index; |
398 | ||
399 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 400 | if (sect) |
b8fbeb18 EZ |
401 | objfile->sect_index_bss = sect->index; |
402 | ||
403 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 404 | if (sect) |
b8fbeb18 EZ |
405 | objfile->sect_index_rodata = sect->index; |
406 | ||
bbcd32ad FF |
407 | /* This is where things get really weird... We MUST have valid |
408 | indices for the various sect_index_* members or gdb will abort. | |
409 | So if for example, there is no ".text" section, we have to | |
410 | accomodate that. Except when explicitly adding symbol files at | |
411 | some address, section_offsets contains nothing but zeros, so it | |
412 | doesn't matter which slot in section_offsets the individual | |
413 | sect_index_* members index into. So if they are all zero, it is | |
414 | safe to just point all the currently uninitialized indices to the | |
415 | first slot. */ | |
416 | ||
417 | for (i = 0; i < objfile->num_sections; i++) | |
418 | { | |
419 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
420 | { | |
421 | break; | |
422 | } | |
423 | } | |
424 | if (i == objfile->num_sections) | |
425 | { | |
426 | if (objfile->sect_index_text == -1) | |
427 | objfile->sect_index_text = 0; | |
428 | if (objfile->sect_index_data == -1) | |
429 | objfile->sect_index_data = 0; | |
430 | if (objfile->sect_index_bss == -1) | |
431 | objfile->sect_index_bss = 0; | |
432 | if (objfile->sect_index_rodata == -1) | |
433 | objfile->sect_index_rodata = 0; | |
434 | } | |
b8fbeb18 | 435 | } |
c906108c | 436 | |
e8289572 JB |
437 | |
438 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 439 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
440 | version of the sym_fns.sym_offsets function for symbol readers that |
441 | don't need to do anything special. It allocates a section_offsets table | |
442 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
443 | ||
444 | void | |
445 | default_symfile_offsets (struct objfile *objfile, | |
446 | struct section_addr_info *addrs) | |
447 | { | |
448 | int i; | |
449 | ||
a39a16c4 | 450 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 451 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 452 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 453 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 454 | memset (objfile->section_offsets, 0, |
a39a16c4 | 455 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
456 | |
457 | /* Now calculate offsets for section that were specified by the | |
458 | caller. */ | |
a39a16c4 | 459 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
460 | { |
461 | struct other_sections *osp ; | |
462 | ||
463 | osp = &addrs->other[i] ; | |
464 | if (osp->addr == 0) | |
465 | continue; | |
466 | ||
467 | /* Record all sections in offsets */ | |
468 | /* The section_offsets in the objfile are here filled in using | |
469 | the BFD index. */ | |
470 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
471 | } | |
472 | ||
473 | /* Remember the bfd indexes for the .text, .data, .bss and | |
474 | .rodata sections. */ | |
475 | init_objfile_sect_indices (objfile); | |
476 | } | |
477 | ||
478 | ||
c906108c SS |
479 | /* Process a symbol file, as either the main file or as a dynamically |
480 | loaded file. | |
481 | ||
96baa820 JM |
482 | OBJFILE is where the symbols are to be read from. |
483 | ||
7e8580c1 JB |
484 | ADDRS is the list of section load addresses. If the user has given |
485 | an 'add-symbol-file' command, then this is the list of offsets and | |
486 | addresses he or she provided as arguments to the command; or, if | |
487 | we're handling a shared library, these are the actual addresses the | |
488 | sections are loaded at, according to the inferior's dynamic linker | |
489 | (as gleaned by GDB's shared library code). We convert each address | |
490 | into an offset from the section VMA's as it appears in the object | |
491 | file, and then call the file's sym_offsets function to convert this | |
492 | into a format-specific offset table --- a `struct section_offsets'. | |
493 | If ADDRS is non-zero, OFFSETS must be zero. | |
494 | ||
495 | OFFSETS is a table of section offsets already in the right | |
496 | format-specific representation. NUM_OFFSETS is the number of | |
497 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
498 | assume this is the proper table the call to sym_offsets described | |
499 | above would produce. Instead of calling sym_offsets, we just dump | |
500 | it right into objfile->section_offsets. (When we're re-reading | |
501 | symbols from an objfile, we don't have the original load address | |
502 | list any more; all we have is the section offset table.) If | |
503 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
504 | |
505 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
506 | it's an extra symbol file such as dynamically loaded code. | |
507 | ||
508 | VERBO is nonzero if the caller has printed a verbose message about | |
509 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
510 | |
511 | void | |
7e8580c1 JB |
512 | syms_from_objfile (struct objfile *objfile, |
513 | struct section_addr_info *addrs, | |
514 | struct section_offsets *offsets, | |
515 | int num_offsets, | |
516 | int mainline, | |
517 | int verbo) | |
c906108c | 518 | { |
a39a16c4 | 519 | struct section_addr_info *local_addr = NULL; |
c906108c | 520 | struct cleanup *old_chain; |
2acceee2 | 521 | |
7e8580c1 | 522 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 523 | |
c906108c SS |
524 | init_entry_point_info (objfile); |
525 | find_sym_fns (objfile); | |
526 | ||
75245b24 MS |
527 | if (objfile->sf == NULL) |
528 | return; /* No symbols. */ | |
529 | ||
c906108c SS |
530 | /* Make sure that partially constructed symbol tables will be cleaned up |
531 | if an error occurs during symbol reading. */ | |
74b7792f | 532 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 533 | |
a39a16c4 MM |
534 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
535 | list. We now establish the convention that an addr of zero means | |
536 | no load address was specified. */ | |
537 | if (! addrs && ! offsets) | |
538 | { | |
5417f6dc | 539 | local_addr |
a39a16c4 MM |
540 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
541 | make_cleanup (xfree, local_addr); | |
542 | addrs = local_addr; | |
543 | } | |
544 | ||
545 | /* Now either addrs or offsets is non-zero. */ | |
546 | ||
c5aa993b | 547 | if (mainline) |
c906108c SS |
548 | { |
549 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 550 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 551 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
552 | |
553 | /* Since no error yet, throw away the old symbol table. */ | |
554 | ||
555 | if (symfile_objfile != NULL) | |
556 | { | |
557 | free_objfile (symfile_objfile); | |
558 | symfile_objfile = NULL; | |
559 | } | |
560 | ||
561 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
562 | If the user wants to get rid of them, they should do "symbol-file" |
563 | without arguments first. Not sure this is the best behavior | |
564 | (PR 2207). */ | |
c906108c | 565 | |
c5aa993b | 566 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
567 | } |
568 | ||
569 | /* Convert addr into an offset rather than an absolute address. | |
570 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 571 | and assume that <addr> is where that got loaded. |
c906108c | 572 | |
53a5351d JM |
573 | We no longer warn if the lowest section is not a text segment (as |
574 | happens for the PA64 port. */ | |
1549f619 | 575 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 576 | { |
1549f619 EZ |
577 | asection *lower_sect; |
578 | asection *sect; | |
579 | CORE_ADDR lower_offset; | |
580 | int i; | |
581 | ||
5417f6dc | 582 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
583 | continguous sections. FIXME!! won't work without call to find |
584 | .text first, but this assumes text is lowest section. */ | |
585 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
586 | if (lower_sect == NULL) | |
c906108c | 587 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 588 | &lower_sect); |
2acceee2 | 589 | if (lower_sect == NULL) |
c906108c SS |
590 | warning ("no loadable sections found in added symbol-file %s", |
591 | objfile->name); | |
5417f6dc | 592 | else |
b8fbeb18 EZ |
593 | if ((bfd_get_section_flags (objfile->obfd, lower_sect) & SEC_CODE) == 0) |
594 | warning ("Lowest section in %s is %s at %s", | |
595 | objfile->name, | |
596 | bfd_section_name (objfile->obfd, lower_sect), | |
597 | paddr (bfd_section_vma (objfile->obfd, lower_sect))); | |
2acceee2 JM |
598 | if (lower_sect != NULL) |
599 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); | |
600 | else | |
601 | lower_offset = 0; | |
5417f6dc | 602 | |
13de58df | 603 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
604 | FIXME! Sections must be in order of increasing loadable section |
605 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 606 | |
13de58df JB |
607 | Adjust offsets if the segments are not contiguous. |
608 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
609 | the offset of the highest loadable section lower than it |
610 | (the loadable section directly below it in memory). | |
611 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
612 | ||
1549f619 | 613 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
614 | { |
615 | if (addrs->other[i].addr != 0) | |
616 | { | |
617 | sect = bfd_get_section_by_name (objfile->obfd, | |
618 | addrs->other[i].name); | |
619 | if (sect) | |
620 | { | |
621 | addrs->other[i].addr | |
622 | -= bfd_section_vma (objfile->obfd, sect); | |
623 | lower_offset = addrs->other[i].addr; | |
624 | /* This is the index used by BFD. */ | |
625 | addrs->other[i].sectindex = sect->index ; | |
626 | } | |
627 | else | |
628 | { | |
629 | warning ("section %s not found in %s", | |
5417f6dc | 630 | addrs->other[i].name, |
7e8580c1 JB |
631 | objfile->name); |
632 | addrs->other[i].addr = 0; | |
633 | } | |
634 | } | |
635 | else | |
636 | addrs->other[i].addr = lower_offset; | |
637 | } | |
c906108c SS |
638 | } |
639 | ||
640 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
641 | appear for this new file, and record how verbose to be, then do the | |
642 | initial symbol reading for this file. */ | |
643 | ||
c5aa993b | 644 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 645 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 646 | |
7e8580c1 JB |
647 | if (addrs) |
648 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
649 | else | |
650 | { | |
651 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
652 | ||
653 | /* Just copy in the offset table directly as given to us. */ | |
654 | objfile->num_sections = num_offsets; | |
655 | objfile->section_offsets | |
656 | = ((struct section_offsets *) | |
8b92e4d5 | 657 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
658 | memcpy (objfile->section_offsets, offsets, size); |
659 | ||
660 | init_objfile_sect_indices (objfile); | |
661 | } | |
c906108c | 662 | |
52d16ba8 | 663 | #ifndef DEPRECATED_IBM6000_TARGET |
c906108c SS |
664 | /* This is a SVR4/SunOS specific hack, I think. In any event, it |
665 | screws RS/6000. sym_offsets should be doing this sort of thing, | |
666 | because it knows the mapping between bfd sections and | |
667 | section_offsets. */ | |
668 | /* This is a hack. As far as I can tell, section offsets are not | |
669 | target dependent. They are all set to addr with a couple of | |
670 | exceptions. The exceptions are sysvr4 shared libraries, whose | |
671 | offsets are kept in solib structures anyway and rs6000 xcoff | |
672 | which handles shared libraries in a completely unique way. | |
673 | ||
674 | Section offsets are built similarly, except that they are built | |
675 | by adding addr in all cases because there is no clear mapping | |
676 | from section_offsets into actual sections. Note that solib.c | |
96baa820 | 677 | has a different algorithm for finding section offsets. |
c906108c SS |
678 | |
679 | These should probably all be collapsed into some target | |
680 | independent form of shared library support. FIXME. */ | |
681 | ||
2acceee2 | 682 | if (addrs) |
c906108c SS |
683 | { |
684 | struct obj_section *s; | |
685 | ||
5417f6dc RM |
686 | /* Map section offsets in "addr" back to the object's |
687 | sections by comparing the section names with bfd's | |
2acceee2 JM |
688 | section names. Then adjust the section address by |
689 | the offset. */ /* for gdb/13815 */ | |
5417f6dc | 690 | |
96baa820 | 691 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 692 | { |
2acceee2 JM |
693 | CORE_ADDR s_addr = 0; |
694 | int i; | |
695 | ||
5417f6dc | 696 | for (i = 0; |
a39a16c4 | 697 | !s_addr && i < addrs->num_sections && addrs->other[i].name; |
62557bbc | 698 | i++) |
5417f6dc RM |
699 | if (strcmp (bfd_section_name (s->objfile->obfd, |
700 | s->the_bfd_section), | |
fbd35540 | 701 | addrs->other[i].name) == 0) |
2acceee2 | 702 | s_addr = addrs->other[i].addr; /* end added for gdb/13815 */ |
5417f6dc | 703 | |
c906108c | 704 | s->addr -= s->offset; |
2acceee2 | 705 | s->addr += s_addr; |
c906108c | 706 | s->endaddr -= s->offset; |
2acceee2 JM |
707 | s->endaddr += s_addr; |
708 | s->offset += s_addr; | |
c906108c SS |
709 | } |
710 | } | |
52d16ba8 | 711 | #endif /* not DEPRECATED_IBM6000_TARGET */ |
c906108c | 712 | |
96baa820 | 713 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 714 | |
c906108c SS |
715 | /* Don't allow char * to have a typename (else would get caddr_t). |
716 | Ditto void *. FIXME: Check whether this is now done by all the | |
717 | symbol readers themselves (many of them now do), and if so remove | |
718 | it from here. */ | |
719 | ||
720 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
721 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
722 | ||
723 | /* Mark the objfile has having had initial symbol read attempted. Note | |
724 | that this does not mean we found any symbols... */ | |
725 | ||
c5aa993b | 726 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
727 | |
728 | /* Discard cleanups as symbol reading was successful. */ | |
729 | ||
730 | discard_cleanups (old_chain); | |
c906108c SS |
731 | } |
732 | ||
733 | /* Perform required actions after either reading in the initial | |
734 | symbols for a new objfile, or mapping in the symbols from a reusable | |
735 | objfile. */ | |
c5aa993b | 736 | |
c906108c | 737 | void |
fba45db2 | 738 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
739 | { |
740 | ||
741 | /* If this is the main symbol file we have to clean up all users of the | |
742 | old main symbol file. Otherwise it is sufficient to fixup all the | |
743 | breakpoints that may have been redefined by this symbol file. */ | |
744 | if (mainline) | |
745 | { | |
746 | /* OK, make it the "real" symbol file. */ | |
747 | symfile_objfile = objfile; | |
748 | ||
749 | clear_symtab_users (); | |
750 | } | |
751 | else | |
752 | { | |
753 | breakpoint_re_set (); | |
754 | } | |
755 | ||
756 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 757 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
758 | } |
759 | ||
760 | /* Process a symbol file, as either the main file or as a dynamically | |
761 | loaded file. | |
762 | ||
5417f6dc RM |
763 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
764 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f JB |
765 | |
766 | FROM_TTY says how verbose to be. | |
767 | ||
768 | MAINLINE specifies whether this is the main symbol file, or whether | |
769 | it's an extra symbol file such as dynamically loaded code. | |
770 | ||
771 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
772 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
773 | non-zero. | |
c906108c | 774 | |
c906108c SS |
775 | Upon success, returns a pointer to the objfile that was added. |
776 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f | 777 | static struct objfile * |
5417f6dc | 778 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, |
7904e09f JB |
779 | struct section_addr_info *addrs, |
780 | struct section_offsets *offsets, | |
781 | int num_offsets, | |
782 | int mainline, int flags) | |
c906108c SS |
783 | { |
784 | struct objfile *objfile; | |
785 | struct partial_symtab *psymtab; | |
5b5d99cf | 786 | char *debugfile; |
a39a16c4 MM |
787 | struct section_addr_info *orig_addrs; |
788 | struct cleanup *my_cleanups; | |
5417f6dc | 789 | const char *name = bfd_get_filename (abfd); |
c906108c | 790 | |
5417f6dc | 791 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 792 | |
5417f6dc RM |
793 | /* Give user a chance to burp if we'd be |
794 | interactively wiping out any existing symbols. */ | |
c906108c SS |
795 | |
796 | if ((have_full_symbols () || have_partial_symbols ()) | |
797 | && mainline | |
798 | && from_tty | |
799 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
c5aa993b | 800 | error ("Not confirmed."); |
c906108c | 801 | |
2df3850c | 802 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 803 | discard_cleanups (my_cleanups); |
c906108c | 804 | |
a39a16c4 MM |
805 | orig_addrs = alloc_section_addr_info (bfd_count_sections (abfd)); |
806 | my_cleanups = make_cleanup (xfree, orig_addrs); | |
807 | if (addrs) | |
63cd24fe EZ |
808 | { |
809 | int i; | |
810 | orig_addrs->num_sections = addrs->num_sections; | |
811 | for (i = 0; i < addrs->num_sections; i++) | |
812 | orig_addrs->other[i] = addrs->other[i]; | |
813 | } | |
a39a16c4 | 814 | |
78a4a9b9 AC |
815 | /* We either created a new mapped symbol table, mapped an existing |
816 | symbol table file which has not had initial symbol reading | |
817 | performed, or need to read an unmapped symbol table. */ | |
818 | if (from_tty || info_verbose) | |
c906108c | 819 | { |
78a4a9b9 AC |
820 | if (pre_add_symbol_hook) |
821 | pre_add_symbol_hook (name); | |
822 | else | |
c906108c | 823 | { |
78a4a9b9 | 824 | printf_unfiltered ("Reading symbols from %s...", name); |
c906108c SS |
825 | wrap_here (""); |
826 | gdb_flush (gdb_stdout); | |
827 | } | |
c906108c | 828 | } |
78a4a9b9 AC |
829 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
830 | mainline, from_tty); | |
c906108c SS |
831 | |
832 | /* We now have at least a partial symbol table. Check to see if the | |
833 | user requested that all symbols be read on initial access via either | |
834 | the gdb startup command line or on a per symbol file basis. Expand | |
835 | all partial symbol tables for this objfile if so. */ | |
836 | ||
2acceee2 | 837 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c SS |
838 | { |
839 | if (from_tty || info_verbose) | |
840 | { | |
46f45a4a | 841 | printf_unfiltered ("expanding to full symbols..."); |
c906108c SS |
842 | wrap_here (""); |
843 | gdb_flush (gdb_stdout); | |
844 | } | |
845 | ||
c5aa993b | 846 | for (psymtab = objfile->psymtabs; |
c906108c | 847 | psymtab != NULL; |
c5aa993b | 848 | psymtab = psymtab->next) |
c906108c SS |
849 | { |
850 | psymtab_to_symtab (psymtab); | |
851 | } | |
852 | } | |
853 | ||
5b5d99cf JB |
854 | debugfile = find_separate_debug_file (objfile); |
855 | if (debugfile) | |
856 | { | |
5b5d99cf JB |
857 | if (addrs != NULL) |
858 | { | |
859 | objfile->separate_debug_objfile | |
a39a16c4 | 860 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
861 | } |
862 | else | |
863 | { | |
864 | objfile->separate_debug_objfile | |
865 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
866 | } | |
867 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
868 | = objfile; | |
5417f6dc | 869 | |
5b5d99cf JB |
870 | /* Put the separate debug object before the normal one, this is so that |
871 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
872 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 873 | |
5b5d99cf JB |
874 | xfree (debugfile); |
875 | } | |
5417f6dc | 876 | |
cb3c37b2 JB |
877 | if (!have_partial_symbols () && !have_full_symbols ()) |
878 | { | |
879 | wrap_here (""); | |
46f45a4a | 880 | printf_unfiltered ("(no debugging symbols found)..."); |
cb3c37b2 JB |
881 | wrap_here (""); |
882 | } | |
883 | ||
c906108c SS |
884 | if (from_tty || info_verbose) |
885 | { | |
886 | if (post_add_symbol_hook) | |
c5aa993b | 887 | post_add_symbol_hook (); |
c906108c | 888 | else |
c5aa993b | 889 | { |
46f45a4a | 890 | printf_unfiltered ("done.\n"); |
c5aa993b | 891 | } |
c906108c SS |
892 | } |
893 | ||
481d0f41 JB |
894 | /* We print some messages regardless of whether 'from_tty || |
895 | info_verbose' is true, so make sure they go out at the right | |
896 | time. */ | |
897 | gdb_flush (gdb_stdout); | |
898 | ||
a39a16c4 MM |
899 | do_cleanups (my_cleanups); |
900 | ||
109f874e MS |
901 | if (objfile->sf == NULL) |
902 | return objfile; /* No symbols. */ | |
903 | ||
c906108c SS |
904 | new_symfile_objfile (objfile, mainline, from_tty); |
905 | ||
9a4105ab AC |
906 | if (deprecated_target_new_objfile_hook) |
907 | deprecated_target_new_objfile_hook (objfile); | |
c906108c SS |
908 | |
909 | return (objfile); | |
910 | } | |
911 | ||
7904e09f | 912 | |
eb4556d7 JB |
913 | /* Process the symbol file ABFD, as either the main file or as a |
914 | dynamically loaded file. | |
915 | ||
916 | See symbol_file_add_with_addrs_or_offsets's comments for | |
917 | details. */ | |
918 | struct objfile * | |
919 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |
920 | struct section_addr_info *addrs, | |
921 | int mainline, int flags) | |
922 | { | |
923 | return symbol_file_add_with_addrs_or_offsets (abfd, | |
924 | from_tty, addrs, 0, 0, | |
925 | mainline, flags); | |
926 | } | |
927 | ||
928 | ||
7904e09f JB |
929 | /* Process a symbol file, as either the main file or as a dynamically |
930 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
931 | for details. */ | |
932 | struct objfile * | |
933 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
934 | int mainline, int flags) | |
935 | { | |
eb4556d7 JB |
936 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, |
937 | addrs, mainline, flags); | |
7904e09f JB |
938 | } |
939 | ||
940 | ||
d7db6da9 FN |
941 | /* Call symbol_file_add() with default values and update whatever is |
942 | affected by the loading of a new main(). | |
943 | Used when the file is supplied in the gdb command line | |
944 | and by some targets with special loading requirements. | |
945 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
946 | argument for the switches that can only be specified in the symbol_file | |
947 | command itself. */ | |
5417f6dc | 948 | |
1adeb98a FN |
949 | void |
950 | symbol_file_add_main (char *args, int from_tty) | |
951 | { | |
d7db6da9 FN |
952 | symbol_file_add_main_1 (args, from_tty, 0); |
953 | } | |
954 | ||
955 | static void | |
956 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
957 | { | |
958 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
959 | ||
960 | #ifdef HPUXHPPA | |
961 | RESET_HP_UX_GLOBALS (); | |
962 | #endif | |
963 | ||
964 | /* Getting new symbols may change our opinion about | |
965 | what is frameless. */ | |
966 | reinit_frame_cache (); | |
967 | ||
968 | set_initial_language (); | |
1adeb98a FN |
969 | } |
970 | ||
971 | void | |
972 | symbol_file_clear (int from_tty) | |
973 | { | |
974 | if ((have_full_symbols () || have_partial_symbols ()) | |
975 | && from_tty | |
976 | && !query ("Discard symbol table from `%s'? ", | |
977 | symfile_objfile->name)) | |
978 | error ("Not confirmed."); | |
979 | free_all_objfiles (); | |
980 | ||
981 | /* solib descriptors may have handles to objfiles. Since their | |
982 | storage has just been released, we'd better wipe the solib | |
983 | descriptors as well. | |
984 | */ | |
985 | #if defined(SOLIB_RESTART) | |
986 | SOLIB_RESTART (); | |
987 | #endif | |
988 | ||
989 | symfile_objfile = NULL; | |
990 | if (from_tty) | |
991 | printf_unfiltered ("No symbol file now.\n"); | |
992 | #ifdef HPUXHPPA | |
993 | RESET_HP_UX_GLOBALS (); | |
994 | #endif | |
995 | } | |
996 | ||
5b5d99cf JB |
997 | static char * |
998 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
999 | { | |
1000 | asection *sect; | |
1001 | bfd_size_type debuglink_size; | |
1002 | unsigned long crc32; | |
1003 | char *contents; | |
1004 | int crc_offset; | |
1005 | unsigned char *p; | |
5417f6dc | 1006 | |
5b5d99cf JB |
1007 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1008 | ||
1009 | if (sect == NULL) | |
1010 | return NULL; | |
1011 | ||
1012 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1013 | |
5b5d99cf JB |
1014 | contents = xmalloc (debuglink_size); |
1015 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1016 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1017 | ||
1018 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1019 | crc_offset = strlen (contents) + 1; | |
1020 | crc_offset = (crc_offset + 3) & ~3; | |
1021 | ||
1022 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1023 | |
5b5d99cf JB |
1024 | *crc32_out = crc32; |
1025 | return contents; | |
1026 | } | |
1027 | ||
1028 | static int | |
1029 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1030 | { | |
1031 | unsigned long file_crc = 0; | |
1032 | int fd; | |
1033 | char buffer[8*1024]; | |
1034 | int count; | |
1035 | ||
1036 | fd = open (name, O_RDONLY | O_BINARY); | |
1037 | if (fd < 0) | |
1038 | return 0; | |
1039 | ||
1040 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1041 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1042 | ||
1043 | close (fd); | |
1044 | ||
1045 | return crc == file_crc; | |
1046 | } | |
1047 | ||
1048 | static char *debug_file_directory = NULL; | |
1049 | ||
1050 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1051 | #define DEBUG_SUBDIRECTORY ".debug" | |
1052 | #endif | |
1053 | ||
1054 | static char * | |
1055 | find_separate_debug_file (struct objfile *objfile) | |
1056 | { | |
1057 | asection *sect; | |
1058 | char *basename; | |
1059 | char *dir; | |
1060 | char *debugfile; | |
1061 | char *name_copy; | |
1062 | bfd_size_type debuglink_size; | |
1063 | unsigned long crc32; | |
1064 | int i; | |
1065 | ||
1066 | basename = get_debug_link_info (objfile, &crc32); | |
1067 | ||
1068 | if (basename == NULL) | |
1069 | return NULL; | |
5417f6dc | 1070 | |
5b5d99cf JB |
1071 | dir = xstrdup (objfile->name); |
1072 | ||
fe36c4f4 JB |
1073 | /* Strip off the final filename part, leaving the directory name, |
1074 | followed by a slash. Objfile names should always be absolute and | |
1075 | tilde-expanded, so there should always be a slash in there | |
1076 | somewhere. */ | |
5b5d99cf JB |
1077 | for (i = strlen(dir) - 1; i >= 0; i--) |
1078 | { | |
1079 | if (IS_DIR_SEPARATOR (dir[i])) | |
1080 | break; | |
1081 | } | |
fe36c4f4 | 1082 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1083 | dir[i+1] = '\0'; |
5417f6dc | 1084 | |
5b5d99cf JB |
1085 | debugfile = alloca (strlen (debug_file_directory) + 1 |
1086 | + strlen (dir) | |
1087 | + strlen (DEBUG_SUBDIRECTORY) | |
1088 | + strlen ("/") | |
5417f6dc | 1089 | + strlen (basename) |
5b5d99cf JB |
1090 | + 1); |
1091 | ||
1092 | /* First try in the same directory as the original file. */ | |
1093 | strcpy (debugfile, dir); | |
1094 | strcat (debugfile, basename); | |
1095 | ||
1096 | if (separate_debug_file_exists (debugfile, crc32)) | |
1097 | { | |
1098 | xfree (basename); | |
1099 | xfree (dir); | |
1100 | return xstrdup (debugfile); | |
1101 | } | |
5417f6dc | 1102 | |
5b5d99cf JB |
1103 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1104 | strcpy (debugfile, dir); | |
1105 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1106 | strcat (debugfile, "/"); | |
1107 | strcat (debugfile, basename); | |
1108 | ||
1109 | if (separate_debug_file_exists (debugfile, crc32)) | |
1110 | { | |
1111 | xfree (basename); | |
1112 | xfree (dir); | |
1113 | return xstrdup (debugfile); | |
1114 | } | |
5417f6dc | 1115 | |
5b5d99cf JB |
1116 | /* Then try in the global debugfile directory. */ |
1117 | strcpy (debugfile, debug_file_directory); | |
1118 | strcat (debugfile, "/"); | |
1119 | strcat (debugfile, dir); | |
5b5d99cf JB |
1120 | strcat (debugfile, basename); |
1121 | ||
1122 | if (separate_debug_file_exists (debugfile, crc32)) | |
1123 | { | |
1124 | xfree (basename); | |
1125 | xfree (dir); | |
1126 | return xstrdup (debugfile); | |
1127 | } | |
5417f6dc | 1128 | |
5b5d99cf JB |
1129 | xfree (basename); |
1130 | xfree (dir); | |
1131 | return NULL; | |
1132 | } | |
1133 | ||
1134 | ||
c906108c SS |
1135 | /* This is the symbol-file command. Read the file, analyze its |
1136 | symbols, and add a struct symtab to a symtab list. The syntax of | |
1137 | the command is rather bizarre--(1) buildargv implements various | |
1138 | quoting conventions which are undocumented and have little or | |
1139 | nothing in common with the way things are quoted (or not quoted) | |
1140 | elsewhere in GDB, (2) options are used, which are not generally | |
1141 | used in GDB (perhaps "set mapped on", "set readnow on" would be | |
1142 | better), (3) the order of options matters, which is contrary to GNU | |
1143 | conventions (because it is confusing and inconvenient). */ | |
4da95fc4 EZ |
1144 | /* Note: ezannoni 2000-04-17. This function used to have support for |
1145 | rombug (see remote-os9k.c). It consisted of a call to target_link() | |
1146 | (target.c) to get the address of the text segment from the target, | |
1147 | and pass that to symbol_file_add(). This is no longer supported. */ | |
c906108c SS |
1148 | |
1149 | void | |
fba45db2 | 1150 | symbol_file_command (char *args, int from_tty) |
c906108c SS |
1151 | { |
1152 | char **argv; | |
1153 | char *name = NULL; | |
c906108c | 1154 | struct cleanup *cleanups; |
2df3850c | 1155 | int flags = OBJF_USERLOADED; |
c906108c SS |
1156 | |
1157 | dont_repeat (); | |
1158 | ||
1159 | if (args == NULL) | |
1160 | { | |
1adeb98a | 1161 | symbol_file_clear (from_tty); |
c906108c SS |
1162 | } |
1163 | else | |
1164 | { | |
1165 | if ((argv = buildargv (args)) == NULL) | |
1166 | { | |
1167 | nomem (0); | |
1168 | } | |
7a292a7a | 1169 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1170 | while (*argv != NULL) |
1171 | { | |
78a4a9b9 AC |
1172 | if (strcmp (*argv, "-readnow") == 0) |
1173 | flags |= OBJF_READNOW; | |
1174 | else if (**argv == '-') | |
1175 | error ("unknown option `%s'", *argv); | |
1176 | else | |
1177 | { | |
1178 | name = *argv; | |
5417f6dc | 1179 | |
78a4a9b9 AC |
1180 | symbol_file_add_main_1 (name, from_tty, flags); |
1181 | } | |
c906108c SS |
1182 | argv++; |
1183 | } | |
1184 | ||
1185 | if (name == NULL) | |
1186 | { | |
1187 | error ("no symbol file name was specified"); | |
1188 | } | |
c906108c SS |
1189 | do_cleanups (cleanups); |
1190 | } | |
1191 | } | |
1192 | ||
1193 | /* Set the initial language. | |
1194 | ||
1195 | A better solution would be to record the language in the psymtab when reading | |
1196 | partial symbols, and then use it (if known) to set the language. This would | |
1197 | be a win for formats that encode the language in an easily discoverable place, | |
1198 | such as DWARF. For stabs, we can jump through hoops looking for specially | |
1199 | named symbols or try to intuit the language from the specific type of stabs | |
1200 | we find, but we can't do that until later when we read in full symbols. | |
1201 | FIXME. */ | |
1202 | ||
1203 | static void | |
fba45db2 | 1204 | set_initial_language (void) |
c906108c SS |
1205 | { |
1206 | struct partial_symtab *pst; | |
c5aa993b | 1207 | enum language lang = language_unknown; |
c906108c SS |
1208 | |
1209 | pst = find_main_psymtab (); | |
1210 | if (pst != NULL) | |
1211 | { | |
c5aa993b | 1212 | if (pst->filename != NULL) |
c906108c | 1213 | { |
c5aa993b JM |
1214 | lang = deduce_language_from_filename (pst->filename); |
1215 | } | |
c906108c SS |
1216 | if (lang == language_unknown) |
1217 | { | |
c5aa993b JM |
1218 | /* Make C the default language */ |
1219 | lang = language_c; | |
c906108c SS |
1220 | } |
1221 | set_language (lang); | |
1222 | expected_language = current_language; /* Don't warn the user */ | |
1223 | } | |
1224 | } | |
1225 | ||
1226 | /* Open file specified by NAME and hand it off to BFD for preliminary | |
1227 | analysis. Result is a newly initialized bfd *, which includes a newly | |
1228 | malloc'd` copy of NAME (tilde-expanded and made absolute). | |
1229 | In case of trouble, error() is called. */ | |
1230 | ||
1231 | bfd * | |
fba45db2 | 1232 | symfile_bfd_open (char *name) |
c906108c SS |
1233 | { |
1234 | bfd *sym_bfd; | |
1235 | int desc; | |
1236 | char *absolute_name; | |
1237 | ||
1238 | ||
1239 | ||
1240 | name = tilde_expand (name); /* Returns 1st new malloc'd copy */ | |
1241 | ||
1242 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
1243 | desc = openp (getenv ("PATH"), 1, name, O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1244 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1245 | if (desc < 0) |
1246 | { | |
1247 | char *exename = alloca (strlen (name) + 5); | |
1248 | strcat (strcpy (exename, name), ".exe"); | |
1249 | desc = openp (getenv ("PATH"), 1, exename, O_RDONLY | O_BINARY, | |
c5aa993b | 1250 | 0, &absolute_name); |
c906108c SS |
1251 | } |
1252 | #endif | |
1253 | if (desc < 0) | |
1254 | { | |
b8c9b27d | 1255 | make_cleanup (xfree, name); |
c906108c SS |
1256 | perror_with_name (name); |
1257 | } | |
b8c9b27d | 1258 | xfree (name); /* Free 1st new malloc'd copy */ |
c906108c | 1259 | name = absolute_name; /* Keep 2nd malloc'd copy in bfd */ |
c5aa993b | 1260 | /* It'll be freed in free_objfile(). */ |
c906108c SS |
1261 | |
1262 | sym_bfd = bfd_fdopenr (name, gnutarget, desc); | |
1263 | if (!sym_bfd) | |
1264 | { | |
1265 | close (desc); | |
b8c9b27d | 1266 | make_cleanup (xfree, name); |
c906108c SS |
1267 | error ("\"%s\": can't open to read symbols: %s.", name, |
1268 | bfd_errmsg (bfd_get_error ())); | |
1269 | } | |
549c1eea | 1270 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1271 | |
1272 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1273 | { | |
1274 | /* FIXME: should be checking for errors from bfd_close (for one thing, | |
c5aa993b JM |
1275 | on error it does not free all the storage associated with the |
1276 | bfd). */ | |
c906108c | 1277 | bfd_close (sym_bfd); /* This also closes desc */ |
b8c9b27d | 1278 | make_cleanup (xfree, name); |
c906108c SS |
1279 | error ("\"%s\": can't read symbols: %s.", name, |
1280 | bfd_errmsg (bfd_get_error ())); | |
1281 | } | |
1282 | return (sym_bfd); | |
1283 | } | |
1284 | ||
0e931cf0 JB |
1285 | /* Return the section index for the given section name. Return -1 if |
1286 | the section was not found. */ | |
1287 | int | |
1288 | get_section_index (struct objfile *objfile, char *section_name) | |
1289 | { | |
1290 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
1291 | if (sect) | |
1292 | return sect->index; | |
1293 | else | |
1294 | return -1; | |
1295 | } | |
1296 | ||
c906108c SS |
1297 | /* Link a new symtab_fns into the global symtab_fns list. Called on gdb |
1298 | startup by the _initialize routine in each object file format reader, | |
1299 | to register information about each format the the reader is prepared | |
1300 | to handle. */ | |
1301 | ||
1302 | void | |
fba45db2 | 1303 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1304 | { |
1305 | sf->next = symtab_fns; | |
1306 | symtab_fns = sf; | |
1307 | } | |
1308 | ||
1309 | ||
1310 | /* Initialize to read symbols from the symbol file sym_bfd. It either | |
1311 | returns or calls error(). The result is an initialized struct sym_fns | |
1312 | in the objfile structure, that contains cached information about the | |
1313 | symbol file. */ | |
1314 | ||
1315 | static void | |
fba45db2 | 1316 | find_sym_fns (struct objfile *objfile) |
c906108c SS |
1317 | { |
1318 | struct sym_fns *sf; | |
c5aa993b JM |
1319 | enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd); |
1320 | char *our_target = bfd_get_target (objfile->obfd); | |
c906108c | 1321 | |
75245b24 MS |
1322 | if (our_flavour == bfd_target_srec_flavour |
1323 | || our_flavour == bfd_target_ihex_flavour | |
1324 | || our_flavour == bfd_target_tekhex_flavour) | |
1325 | return; /* No symbols. */ | |
1326 | ||
c5aa993b | 1327 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
c906108c | 1328 | { |
c5aa993b | 1329 | if (our_flavour == sf->sym_flavour) |
c906108c | 1330 | { |
c5aa993b | 1331 | objfile->sf = sf; |
c906108c SS |
1332 | return; |
1333 | } | |
1334 | } | |
1335 | error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.", | |
c5aa993b | 1336 | bfd_get_target (objfile->obfd)); |
c906108c SS |
1337 | } |
1338 | \f | |
1339 | /* This function runs the load command of our current target. */ | |
1340 | ||
1341 | static void | |
fba45db2 | 1342 | load_command (char *arg, int from_tty) |
c906108c SS |
1343 | { |
1344 | if (arg == NULL) | |
1345 | arg = get_exec_file (1); | |
1346 | target_load (arg, from_tty); | |
2889e661 JB |
1347 | |
1348 | /* After re-loading the executable, we don't really know which | |
1349 | overlays are mapped any more. */ | |
1350 | overlay_cache_invalid = 1; | |
c906108c SS |
1351 | } |
1352 | ||
1353 | /* This version of "load" should be usable for any target. Currently | |
1354 | it is just used for remote targets, not inftarg.c or core files, | |
1355 | on the theory that only in that case is it useful. | |
1356 | ||
1357 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1358 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1359 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1360 | performance compares. */ | |
917317f4 JM |
1361 | |
1362 | static int download_write_size = 512; | |
1363 | static int validate_download = 0; | |
1364 | ||
e4f9b4d5 MS |
1365 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1366 | ||
1367 | static void | |
1368 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1369 | { | |
1370 | bfd_size_type *sum = data; | |
1371 | ||
1372 | *sum += bfd_get_section_size_before_reloc (asec); | |
1373 | } | |
1374 | ||
1375 | /* Opaque data for load_section_callback. */ | |
1376 | struct load_section_data { | |
1377 | unsigned long load_offset; | |
1378 | unsigned long write_count; | |
1379 | unsigned long data_count; | |
1380 | bfd_size_type total_size; | |
1381 | }; | |
1382 | ||
1383 | /* Callback service function for generic_load (bfd_map_over_sections). */ | |
1384 | ||
1385 | static void | |
1386 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1387 | { | |
1388 | struct load_section_data *args = data; | |
1389 | ||
1390 | if (bfd_get_section_flags (abfd, asec) & SEC_LOAD) | |
1391 | { | |
1392 | bfd_size_type size = bfd_get_section_size_before_reloc (asec); | |
1393 | if (size > 0) | |
1394 | { | |
1395 | char *buffer; | |
1396 | struct cleanup *old_chain; | |
1397 | CORE_ADDR lma = bfd_section_lma (abfd, asec) + args->load_offset; | |
1398 | bfd_size_type block_size; | |
1399 | int err; | |
1400 | const char *sect_name = bfd_get_section_name (abfd, asec); | |
1401 | bfd_size_type sent; | |
1402 | ||
1403 | if (download_write_size > 0 && size > download_write_size) | |
1404 | block_size = download_write_size; | |
1405 | else | |
1406 | block_size = size; | |
1407 | ||
1408 | buffer = xmalloc (size); | |
1409 | old_chain = make_cleanup (xfree, buffer); | |
1410 | ||
1411 | /* Is this really necessary? I guess it gives the user something | |
1412 | to look at during a long download. */ | |
e4f9b4d5 MS |
1413 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", |
1414 | sect_name, paddr_nz (size), paddr_nz (lma)); | |
e4f9b4d5 MS |
1415 | |
1416 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
1417 | ||
1418 | sent = 0; | |
1419 | do | |
1420 | { | |
1421 | int len; | |
1422 | bfd_size_type this_transfer = size - sent; | |
1423 | ||
1424 | if (this_transfer >= block_size) | |
1425 | this_transfer = block_size; | |
1426 | len = target_write_memory_partial (lma, buffer, | |
1427 | this_transfer, &err); | |
1428 | if (err) | |
1429 | break; | |
1430 | if (validate_download) | |
1431 | { | |
1432 | /* Broken memories and broken monitors manifest | |
1433 | themselves here when bring new computers to | |
1434 | life. This doubles already slow downloads. */ | |
1435 | /* NOTE: cagney/1999-10-18: A more efficient | |
1436 | implementation might add a verify_memory() | |
1437 | method to the target vector and then use | |
1438 | that. remote.c could implement that method | |
1439 | using the ``qCRC'' packet. */ | |
1440 | char *check = xmalloc (len); | |
5417f6dc | 1441 | struct cleanup *verify_cleanups = |
e4f9b4d5 MS |
1442 | make_cleanup (xfree, check); |
1443 | ||
1444 | if (target_read_memory (lma, check, len) != 0) | |
1445 | error ("Download verify read failed at 0x%s", | |
1446 | paddr (lma)); | |
1447 | if (memcmp (buffer, check, len) != 0) | |
1448 | error ("Download verify compare failed at 0x%s", | |
1449 | paddr (lma)); | |
1450 | do_cleanups (verify_cleanups); | |
1451 | } | |
1452 | args->data_count += len; | |
1453 | lma += len; | |
1454 | buffer += len; | |
1455 | args->write_count += 1; | |
1456 | sent += len; | |
1457 | if (quit_flag | |
9a4105ab AC |
1458 | || (deprecated_ui_load_progress_hook != NULL |
1459 | && deprecated_ui_load_progress_hook (sect_name, sent))) | |
e4f9b4d5 MS |
1460 | error ("Canceled the download"); |
1461 | ||
9a4105ab AC |
1462 | if (deprecated_show_load_progress != NULL) |
1463 | deprecated_show_load_progress (sect_name, sent, size, | |
1464 | args->data_count, | |
1465 | args->total_size); | |
e4f9b4d5 MS |
1466 | } |
1467 | while (sent < size); | |
1468 | ||
1469 | if (err != 0) | |
1470 | error ("Memory access error while loading section %s.", sect_name); | |
1471 | ||
1472 | do_cleanups (old_chain); | |
1473 | } | |
1474 | } | |
1475 | } | |
1476 | ||
c906108c | 1477 | void |
917317f4 | 1478 | generic_load (char *args, int from_tty) |
c906108c | 1479 | { |
c906108c SS |
1480 | asection *s; |
1481 | bfd *loadfile_bfd; | |
1482 | time_t start_time, end_time; /* Start and end times of download */ | |
917317f4 JM |
1483 | char *filename; |
1484 | struct cleanup *old_cleanups; | |
1485 | char *offptr; | |
e4f9b4d5 MS |
1486 | struct load_section_data cbdata; |
1487 | CORE_ADDR entry; | |
1488 | ||
1489 | cbdata.load_offset = 0; /* Offset to add to vma for each section. */ | |
1490 | cbdata.write_count = 0; /* Number of writes needed. */ | |
1491 | cbdata.data_count = 0; /* Number of bytes written to target memory. */ | |
1492 | cbdata.total_size = 0; /* Total size of all bfd sectors. */ | |
917317f4 JM |
1493 | |
1494 | /* Parse the input argument - the user can specify a load offset as | |
1495 | a second argument. */ | |
1496 | filename = xmalloc (strlen (args) + 1); | |
b8c9b27d | 1497 | old_cleanups = make_cleanup (xfree, filename); |
917317f4 JM |
1498 | strcpy (filename, args); |
1499 | offptr = strchr (filename, ' '); | |
1500 | if (offptr != NULL) | |
1501 | { | |
1502 | char *endptr; | |
ba5f2f8a | 1503 | |
e4f9b4d5 | 1504 | cbdata.load_offset = strtoul (offptr, &endptr, 0); |
917317f4 JM |
1505 | if (offptr == endptr) |
1506 | error ("Invalid download offset:%s\n", offptr); | |
1507 | *offptr = '\0'; | |
1508 | } | |
c906108c | 1509 | else |
e4f9b4d5 | 1510 | cbdata.load_offset = 0; |
c906108c | 1511 | |
917317f4 | 1512 | /* Open the file for loading. */ |
c906108c SS |
1513 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1514 | if (loadfile_bfd == NULL) | |
1515 | { | |
1516 | perror_with_name (filename); | |
1517 | return; | |
1518 | } | |
917317f4 | 1519 | |
c906108c SS |
1520 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1521 | on error it does not free all the storage associated with the | |
1522 | bfd). */ | |
5c65bbb6 | 1523 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1524 | |
c5aa993b | 1525 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c SS |
1526 | { |
1527 | error ("\"%s\" is not an object file: %s", filename, | |
1528 | bfd_errmsg (bfd_get_error ())); | |
1529 | } | |
c5aa993b | 1530 | |
5417f6dc | 1531 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
e4f9b4d5 | 1532 | (void *) &cbdata.total_size); |
c2d11a7d | 1533 | |
c906108c SS |
1534 | start_time = time (NULL); |
1535 | ||
e4f9b4d5 | 1536 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); |
c906108c SS |
1537 | |
1538 | end_time = time (NULL); | |
ba5f2f8a | 1539 | |
e4f9b4d5 | 1540 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1541 | ui_out_text (uiout, "Start address "); |
1542 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1543 | ui_out_text (uiout, ", load size "); | |
1544 | ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count); | |
1545 | ui_out_text (uiout, "\n"); | |
e4f9b4d5 MS |
1546 | /* We were doing this in remote-mips.c, I suspect it is right |
1547 | for other targets too. */ | |
1548 | write_pc (entry); | |
c906108c | 1549 | |
7ca9f392 AC |
1550 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1551 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1552 | was commented out), making the call confuses GDB if more than one | |
1553 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
1554 | others don't (or didn't - perhaphs they have all been deleted). */ | |
c906108c | 1555 | |
5417f6dc | 1556 | print_transfer_performance (gdb_stdout, cbdata.data_count, |
e4f9b4d5 | 1557 | cbdata.write_count, end_time - start_time); |
c906108c SS |
1558 | |
1559 | do_cleanups (old_cleanups); | |
1560 | } | |
1561 | ||
1562 | /* Report how fast the transfer went. */ | |
1563 | ||
917317f4 JM |
1564 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1565 | replaced by print_transfer_performance (with a very different | |
1566 | function signature). */ | |
1567 | ||
c906108c | 1568 | void |
fba45db2 KB |
1569 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1570 | time_t end_time) | |
c906108c | 1571 | { |
5417f6dc | 1572 | print_transfer_performance (gdb_stdout, data_count, |
ba5f2f8a | 1573 | end_time - start_time, 0); |
917317f4 JM |
1574 | } |
1575 | ||
1576 | void | |
d9fcf2fb | 1577 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
1578 | unsigned long data_count, |
1579 | unsigned long write_count, | |
1580 | unsigned long time_count) | |
1581 | { | |
8b93c638 JM |
1582 | ui_out_text (uiout, "Transfer rate: "); |
1583 | if (time_count > 0) | |
1584 | { | |
5417f6dc | 1585 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", |
8b93c638 JM |
1586 | (data_count * 8) / time_count); |
1587 | ui_out_text (uiout, " bits/sec"); | |
1588 | } | |
1589 | else | |
1590 | { | |
ba5f2f8a | 1591 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 1592 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
1593 | } |
1594 | if (write_count > 0) | |
1595 | { | |
1596 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 1597 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
1598 | ui_out_text (uiout, " bytes/write"); |
1599 | } | |
1600 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
1601 | } |
1602 | ||
1603 | /* This function allows the addition of incrementally linked object files. | |
1604 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
1605 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
1606 | special case syntax for the rombug target (Rombug is the boot | |
1607 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
1608 | rombug case, the user doesn't need to supply a text address, | |
1609 | instead a call to target_link() (in target.c) would supply the | |
1610 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 1611 | |
c906108c | 1612 | static void |
fba45db2 | 1613 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 1614 | { |
db162d44 | 1615 | char *filename = NULL; |
2df3850c | 1616 | int flags = OBJF_USERLOADED; |
c906108c | 1617 | char *arg; |
2acceee2 | 1618 | int expecting_option = 0; |
db162d44 | 1619 | int section_index = 0; |
2acceee2 JM |
1620 | int argcnt = 0; |
1621 | int sec_num = 0; | |
1622 | int i; | |
db162d44 EZ |
1623 | int expecting_sec_name = 0; |
1624 | int expecting_sec_addr = 0; | |
1625 | ||
a39a16c4 | 1626 | struct sect_opt |
2acceee2 | 1627 | { |
2acceee2 JM |
1628 | char *name; |
1629 | char *value; | |
a39a16c4 | 1630 | }; |
db162d44 | 1631 | |
a39a16c4 MM |
1632 | struct section_addr_info *section_addrs; |
1633 | struct sect_opt *sect_opts = NULL; | |
1634 | size_t num_sect_opts = 0; | |
3017564a | 1635 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 1636 | |
a39a16c4 | 1637 | num_sect_opts = 16; |
5417f6dc | 1638 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
1639 | * sizeof (struct sect_opt)); |
1640 | ||
c906108c SS |
1641 | dont_repeat (); |
1642 | ||
1643 | if (args == NULL) | |
db162d44 | 1644 | error ("add-symbol-file takes a file name and an address"); |
c906108c SS |
1645 | |
1646 | /* Make a copy of the string that we can safely write into. */ | |
c2d11a7d | 1647 | args = xstrdup (args); |
c906108c | 1648 | |
2acceee2 | 1649 | while (*args != '\000') |
c906108c | 1650 | { |
db162d44 | 1651 | /* Any leading spaces? */ |
c5aa993b | 1652 | while (isspace (*args)) |
db162d44 EZ |
1653 | args++; |
1654 | ||
1655 | /* Point arg to the beginning of the argument. */ | |
c906108c | 1656 | arg = args; |
db162d44 EZ |
1657 | |
1658 | /* Move args pointer over the argument. */ | |
c5aa993b | 1659 | while ((*args != '\000') && !isspace (*args)) |
db162d44 EZ |
1660 | args++; |
1661 | ||
1662 | /* If there are more arguments, terminate arg and | |
1663 | proceed past it. */ | |
c906108c | 1664 | if (*args != '\000') |
db162d44 EZ |
1665 | *args++ = '\000'; |
1666 | ||
1667 | /* Now process the argument. */ | |
1668 | if (argcnt == 0) | |
c906108c | 1669 | { |
db162d44 EZ |
1670 | /* The first argument is the file name. */ |
1671 | filename = tilde_expand (arg); | |
3017564a | 1672 | make_cleanup (xfree, filename); |
c906108c | 1673 | } |
db162d44 | 1674 | else |
7a78ae4e ND |
1675 | if (argcnt == 1) |
1676 | { | |
1677 | /* The second argument is always the text address at which | |
1678 | to load the program. */ | |
1679 | sect_opts[section_index].name = ".text"; | |
1680 | sect_opts[section_index].value = arg; | |
5417f6dc | 1681 | if (++section_index > num_sect_opts) |
a39a16c4 MM |
1682 | { |
1683 | num_sect_opts *= 2; | |
5417f6dc | 1684 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 1685 | xrealloc (sect_opts, |
5417f6dc | 1686 | num_sect_opts |
a39a16c4 MM |
1687 | * sizeof (struct sect_opt))); |
1688 | } | |
7a78ae4e ND |
1689 | } |
1690 | else | |
1691 | { | |
1692 | /* It's an option (starting with '-') or it's an argument | |
1693 | to an option */ | |
1694 | ||
1695 | if (*arg == '-') | |
1696 | { | |
78a4a9b9 AC |
1697 | if (strcmp (arg, "-readnow") == 0) |
1698 | flags |= OBJF_READNOW; | |
1699 | else if (strcmp (arg, "-s") == 0) | |
1700 | { | |
1701 | expecting_sec_name = 1; | |
1702 | expecting_sec_addr = 1; | |
1703 | } | |
7a78ae4e ND |
1704 | } |
1705 | else | |
1706 | { | |
1707 | if (expecting_sec_name) | |
db162d44 | 1708 | { |
7a78ae4e ND |
1709 | sect_opts[section_index].name = arg; |
1710 | expecting_sec_name = 0; | |
db162d44 EZ |
1711 | } |
1712 | else | |
7a78ae4e ND |
1713 | if (expecting_sec_addr) |
1714 | { | |
1715 | sect_opts[section_index].value = arg; | |
1716 | expecting_sec_addr = 0; | |
5417f6dc | 1717 | if (++section_index > num_sect_opts) |
a39a16c4 MM |
1718 | { |
1719 | num_sect_opts *= 2; | |
5417f6dc | 1720 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 1721 | xrealloc (sect_opts, |
5417f6dc | 1722 | num_sect_opts |
a39a16c4 MM |
1723 | * sizeof (struct sect_opt))); |
1724 | } | |
7a78ae4e ND |
1725 | } |
1726 | else | |
1727 | error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*"); | |
1728 | } | |
1729 | } | |
db162d44 | 1730 | argcnt++; |
c906108c | 1731 | } |
c906108c | 1732 | |
db162d44 EZ |
1733 | /* Print the prompt for the query below. And save the arguments into |
1734 | a sect_addr_info structure to be passed around to other | |
1735 | functions. We have to split this up into separate print | |
1736 | statements because local_hex_string returns a local static | |
1737 | string. */ | |
5417f6dc | 1738 | |
46f45a4a | 1739 | printf_unfiltered ("add symbol table from file \"%s\" at\n", filename); |
a39a16c4 MM |
1740 | section_addrs = alloc_section_addr_info (section_index); |
1741 | make_cleanup (xfree, section_addrs); | |
db162d44 | 1742 | for (i = 0; i < section_index; i++) |
c906108c | 1743 | { |
db162d44 EZ |
1744 | CORE_ADDR addr; |
1745 | char *val = sect_opts[i].value; | |
1746 | char *sec = sect_opts[i].name; | |
5417f6dc | 1747 | |
ae822768 | 1748 | addr = parse_and_eval_address (val); |
db162d44 | 1749 | |
db162d44 EZ |
1750 | /* Here we store the section offsets in the order they were |
1751 | entered on the command line. */ | |
a39a16c4 MM |
1752 | section_addrs->other[sec_num].name = sec; |
1753 | section_addrs->other[sec_num].addr = addr; | |
46f45a4a | 1754 | printf_unfiltered ("\t%s_addr = %s\n", |
5417f6dc | 1755 | sec, |
db162d44 EZ |
1756 | local_hex_string ((unsigned long)addr)); |
1757 | sec_num++; | |
1758 | ||
5417f6dc | 1759 | /* The object's sections are initialized when a |
db162d44 | 1760 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 1761 | This happens in reread_symbols. |
db162d44 EZ |
1762 | At this point, we don't know what file type this is, |
1763 | so we can't determine what section names are valid. */ | |
2acceee2 | 1764 | } |
db162d44 | 1765 | |
2acceee2 | 1766 | if (from_tty && (!query ("%s", ""))) |
c906108c SS |
1767 | error ("Not confirmed."); |
1768 | ||
a39a16c4 | 1769 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
1770 | |
1771 | /* Getting new symbols may change our opinion about what is | |
1772 | frameless. */ | |
1773 | reinit_frame_cache (); | |
db162d44 | 1774 | do_cleanups (my_cleanups); |
c906108c SS |
1775 | } |
1776 | \f | |
1777 | static void | |
fba45db2 | 1778 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
1779 | { |
1780 | #ifdef ADD_SHARED_SYMBOL_FILES | |
1781 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
1782 | #else | |
1783 | error ("This command is not available in this configuration of GDB."); | |
c5aa993b | 1784 | #endif |
c906108c SS |
1785 | } |
1786 | \f | |
1787 | /* Re-read symbols if a symbol-file has changed. */ | |
1788 | void | |
fba45db2 | 1789 | reread_symbols (void) |
c906108c SS |
1790 | { |
1791 | struct objfile *objfile; | |
1792 | long new_modtime; | |
1793 | int reread_one = 0; | |
1794 | struct stat new_statbuf; | |
1795 | int res; | |
1796 | ||
1797 | /* With the addition of shared libraries, this should be modified, | |
1798 | the load time should be saved in the partial symbol tables, since | |
1799 | different tables may come from different source files. FIXME. | |
1800 | This routine should then walk down each partial symbol table | |
1801 | and see if the symbol table that it originates from has been changed */ | |
1802 | ||
c5aa993b JM |
1803 | for (objfile = object_files; objfile; objfile = objfile->next) |
1804 | { | |
1805 | if (objfile->obfd) | |
1806 | { | |
52d16ba8 | 1807 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
1808 | /* If this object is from a shared library, then you should |
1809 | stat on the library name, not member name. */ | |
c906108c | 1810 | |
c5aa993b JM |
1811 | if (objfile->obfd->my_archive) |
1812 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
1813 | else | |
c906108c | 1814 | #endif |
c5aa993b JM |
1815 | res = stat (objfile->name, &new_statbuf); |
1816 | if (res != 0) | |
c906108c | 1817 | { |
c5aa993b | 1818 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
46f45a4a | 1819 | printf_unfiltered ("`%s' has disappeared; keeping its symbols.\n", |
c5aa993b JM |
1820 | objfile->name); |
1821 | continue; | |
c906108c | 1822 | } |
c5aa993b JM |
1823 | new_modtime = new_statbuf.st_mtime; |
1824 | if (new_modtime != objfile->mtime) | |
c906108c | 1825 | { |
c5aa993b JM |
1826 | struct cleanup *old_cleanups; |
1827 | struct section_offsets *offsets; | |
1828 | int num_offsets; | |
c5aa993b JM |
1829 | char *obfd_filename; |
1830 | ||
46f45a4a | 1831 | printf_unfiltered ("`%s' has changed; re-reading symbols.\n", |
c5aa993b JM |
1832 | objfile->name); |
1833 | ||
1834 | /* There are various functions like symbol_file_add, | |
1835 | symfile_bfd_open, syms_from_objfile, etc., which might | |
1836 | appear to do what we want. But they have various other | |
1837 | effects which we *don't* want. So we just do stuff | |
1838 | ourselves. We don't worry about mapped files (for one thing, | |
1839 | any mapped file will be out of date). */ | |
1840 | ||
1841 | /* If we get an error, blow away this objfile (not sure if | |
1842 | that is the correct response for things like shared | |
1843 | libraries). */ | |
74b7792f | 1844 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 1845 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 1846 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b JM |
1847 | |
1848 | /* Clean up any state BFD has sitting around. We don't need | |
1849 | to close the descriptor but BFD lacks a way of closing the | |
1850 | BFD without closing the descriptor. */ | |
1851 | obfd_filename = bfd_get_filename (objfile->obfd); | |
1852 | if (!bfd_close (objfile->obfd)) | |
1853 | error ("Can't close BFD for %s: %s", objfile->name, | |
1854 | bfd_errmsg (bfd_get_error ())); | |
1855 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
1856 | if (objfile->obfd == NULL) | |
1857 | error ("Can't open %s to read symbols.", objfile->name); | |
1858 | /* bfd_openr sets cacheable to true, which is what we want. */ | |
1859 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
1860 | error ("Can't read symbols from %s: %s.", objfile->name, | |
1861 | bfd_errmsg (bfd_get_error ())); | |
1862 | ||
1863 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 1864 | objfile_obstack. */ |
c5aa993b | 1865 | num_offsets = objfile->num_sections; |
5417f6dc | 1866 | offsets = ((struct section_offsets *) |
a39a16c4 | 1867 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 1868 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 1869 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
1870 | |
1871 | /* Nuke all the state that we will re-read. Much of the following | |
1872 | code which sets things to NULL really is necessary to tell | |
1873 | other parts of GDB that there is nothing currently there. */ | |
1874 | ||
1875 | /* FIXME: Do we have to free a whole linked list, or is this | |
1876 | enough? */ | |
1877 | if (objfile->global_psymbols.list) | |
aac7f4ea | 1878 | xmfree (objfile->md, objfile->global_psymbols.list); |
c5aa993b JM |
1879 | memset (&objfile->global_psymbols, 0, |
1880 | sizeof (objfile->global_psymbols)); | |
1881 | if (objfile->static_psymbols.list) | |
aac7f4ea | 1882 | xmfree (objfile->md, objfile->static_psymbols.list); |
c5aa993b JM |
1883 | memset (&objfile->static_psymbols, 0, |
1884 | sizeof (objfile->static_psymbols)); | |
1885 | ||
1886 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
1887 | bcache_xfree (objfile->psymbol_cache); |
1888 | objfile->psymbol_cache = bcache_xmalloc (); | |
1889 | bcache_xfree (objfile->macro_cache); | |
1890 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
1891 | if (objfile->demangled_names_hash != NULL) |
1892 | { | |
1893 | htab_delete (objfile->demangled_names_hash); | |
1894 | objfile->demangled_names_hash = NULL; | |
1895 | } | |
b99607ea | 1896 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
1897 | objfile->sections = NULL; |
1898 | objfile->symtabs = NULL; | |
1899 | objfile->psymtabs = NULL; | |
1900 | objfile->free_psymtabs = NULL; | |
a1b8c067 | 1901 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 1902 | objfile->msymbols = NULL; |
29239a8f | 1903 | objfile->sym_private = NULL; |
c5aa993b | 1904 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
1905 | memset (&objfile->msymbol_hash, 0, |
1906 | sizeof (objfile->msymbol_hash)); | |
1907 | memset (&objfile->msymbol_demangled_hash, 0, | |
1908 | sizeof (objfile->msymbol_demangled_hash)); | |
c5aa993b | 1909 | objfile->fundamental_types = NULL; |
7b097ae3 | 1910 | clear_objfile_data (objfile); |
c5aa993b JM |
1911 | if (objfile->sf != NULL) |
1912 | { | |
1913 | (*objfile->sf->sym_finish) (objfile); | |
1914 | } | |
1915 | ||
1916 | /* We never make this a mapped file. */ | |
1917 | objfile->md = NULL; | |
af5f3db6 AC |
1918 | objfile->psymbol_cache = bcache_xmalloc (); |
1919 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
1920 | /* obstack_init also initializes the obstack so it is |
1921 | empty. We could use obstack_specify_allocation but | |
1922 | gdb_obstack.h specifies the alloc/dealloc | |
1923 | functions. */ | |
1924 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
1925 | if (build_objfile_section_table (objfile)) |
1926 | { | |
1927 | error ("Can't find the file sections in `%s': %s", | |
1928 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
1929 | } | |
15831452 | 1930 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
1931 | |
1932 | /* We use the same section offsets as from last time. I'm not | |
1933 | sure whether that is always correct for shared libraries. */ | |
1934 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 1935 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 1936 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 1937 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 1938 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
1939 | objfile->num_sections = num_offsets; |
1940 | ||
1941 | /* What the hell is sym_new_init for, anyway? The concept of | |
1942 | distinguishing between the main file and additional files | |
1943 | in this way seems rather dubious. */ | |
1944 | if (objfile == symfile_objfile) | |
1945 | { | |
1946 | (*objfile->sf->sym_new_init) (objfile); | |
c906108c | 1947 | #ifdef HPUXHPPA |
c5aa993b | 1948 | RESET_HP_UX_GLOBALS (); |
c906108c | 1949 | #endif |
c5aa993b JM |
1950 | } |
1951 | ||
1952 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 1953 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
1954 | /* The "mainline" parameter is a hideous hack; I think leaving it |
1955 | zero is OK since dbxread.c also does what it needs to do if | |
1956 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 1957 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
1958 | if (!have_partial_symbols () && !have_full_symbols ()) |
1959 | { | |
1960 | wrap_here (""); | |
46f45a4a | 1961 | printf_unfiltered ("(no debugging symbols found)\n"); |
c5aa993b JM |
1962 | wrap_here (""); |
1963 | } | |
1964 | objfile->flags |= OBJF_SYMS; | |
1965 | ||
1966 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 1967 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 1968 | |
c5aa993b JM |
1969 | /* Getting new symbols may change our opinion about what is |
1970 | frameless. */ | |
c906108c | 1971 | |
c5aa993b | 1972 | reinit_frame_cache (); |
c906108c | 1973 | |
c5aa993b JM |
1974 | /* Discard cleanups as symbol reading was successful. */ |
1975 | discard_cleanups (old_cleanups); | |
c906108c | 1976 | |
c5aa993b JM |
1977 | /* If the mtime has changed between the time we set new_modtime |
1978 | and now, we *want* this to be out of date, so don't call stat | |
1979 | again now. */ | |
1980 | objfile->mtime = new_modtime; | |
1981 | reread_one = 1; | |
5b5d99cf | 1982 | reread_separate_symbols (objfile); |
c5aa993b | 1983 | } |
c906108c SS |
1984 | } |
1985 | } | |
c906108c SS |
1986 | |
1987 | if (reread_one) | |
1988 | clear_symtab_users (); | |
1989 | } | |
5b5d99cf JB |
1990 | |
1991 | ||
1992 | /* Handle separate debug info for OBJFILE, which has just been | |
1993 | re-read: | |
1994 | - If we had separate debug info before, but now we don't, get rid | |
1995 | of the separated objfile. | |
1996 | - If we didn't have separated debug info before, but now we do, | |
1997 | read in the new separated debug info file. | |
1998 | - If the debug link points to a different file, toss the old one | |
1999 | and read the new one. | |
2000 | This function does *not* handle the case where objfile is still | |
2001 | using the same separate debug info file, but that file's timestamp | |
2002 | has changed. That case should be handled by the loop in | |
2003 | reread_symbols already. */ | |
2004 | static void | |
2005 | reread_separate_symbols (struct objfile *objfile) | |
2006 | { | |
2007 | char *debug_file; | |
2008 | unsigned long crc32; | |
2009 | ||
2010 | /* Does the updated objfile's debug info live in a | |
2011 | separate file? */ | |
2012 | debug_file = find_separate_debug_file (objfile); | |
2013 | ||
2014 | if (objfile->separate_debug_objfile) | |
2015 | { | |
2016 | /* There are two cases where we need to get rid of | |
2017 | the old separated debug info objfile: | |
2018 | - if the new primary objfile doesn't have | |
2019 | separated debug info, or | |
2020 | - if the new primary objfile has separate debug | |
2021 | info, but it's under a different filename. | |
5417f6dc | 2022 | |
5b5d99cf JB |
2023 | If the old and new objfiles both have separate |
2024 | debug info, under the same filename, then we're | |
2025 | okay --- if the separated file's contents have | |
2026 | changed, we will have caught that when we | |
2027 | visited it in this function's outermost | |
2028 | loop. */ | |
2029 | if (! debug_file | |
2030 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2031 | free_objfile (objfile->separate_debug_objfile); | |
2032 | } | |
2033 | ||
2034 | /* If the new objfile has separate debug info, and we | |
2035 | haven't loaded it already, do so now. */ | |
2036 | if (debug_file | |
2037 | && ! objfile->separate_debug_objfile) | |
2038 | { | |
2039 | /* Use the same section offset table as objfile itself. | |
2040 | Preserve the flags from objfile that make sense. */ | |
2041 | objfile->separate_debug_objfile | |
2042 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2043 | (symfile_bfd_open (debug_file), |
5b5d99cf JB |
2044 | info_verbose, /* from_tty: Don't override the default. */ |
2045 | 0, /* No addr table. */ | |
2046 | objfile->section_offsets, objfile->num_sections, | |
2047 | 0, /* Not mainline. See comments about this above. */ | |
78a4a9b9 | 2048 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2049 | | OBJF_USERLOADED))); |
2050 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2051 | = objfile; | |
2052 | } | |
2053 | } | |
2054 | ||
2055 | ||
c906108c SS |
2056 | \f |
2057 | ||
c5aa993b JM |
2058 | |
2059 | typedef struct | |
2060 | { | |
2061 | char *ext; | |
c906108c | 2062 | enum language lang; |
c5aa993b JM |
2063 | } |
2064 | filename_language; | |
c906108c | 2065 | |
c5aa993b | 2066 | static filename_language *filename_language_table; |
c906108c SS |
2067 | static int fl_table_size, fl_table_next; |
2068 | ||
2069 | static void | |
fba45db2 | 2070 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2071 | { |
2072 | if (fl_table_next >= fl_table_size) | |
2073 | { | |
2074 | fl_table_size += 10; | |
5417f6dc | 2075 | filename_language_table = |
25bf3106 PM |
2076 | xrealloc (filename_language_table, |
2077 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2078 | } |
2079 | ||
4fcf66da | 2080 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2081 | filename_language_table[fl_table_next].lang = lang; |
2082 | fl_table_next++; | |
2083 | } | |
2084 | ||
2085 | static char *ext_args; | |
2086 | ||
2087 | static void | |
fba45db2 | 2088 | set_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2089 | { |
2090 | int i; | |
2091 | char *cp = ext_args; | |
2092 | enum language lang; | |
2093 | ||
2094 | /* First arg is filename extension, starting with '.' */ | |
2095 | if (*cp != '.') | |
2096 | error ("'%s': Filename extension must begin with '.'", ext_args); | |
2097 | ||
2098 | /* Find end of first arg. */ | |
c5aa993b | 2099 | while (*cp && !isspace (*cp)) |
c906108c SS |
2100 | cp++; |
2101 | ||
2102 | if (*cp == '\0') | |
2103 | error ("'%s': two arguments required -- filename extension and language", | |
2104 | ext_args); | |
2105 | ||
2106 | /* Null-terminate first arg */ | |
c5aa993b | 2107 | *cp++ = '\0'; |
c906108c SS |
2108 | |
2109 | /* Find beginning of second arg, which should be a source language. */ | |
2110 | while (*cp && isspace (*cp)) | |
2111 | cp++; | |
2112 | ||
2113 | if (*cp == '\0') | |
2114 | error ("'%s': two arguments required -- filename extension and language", | |
2115 | ext_args); | |
2116 | ||
2117 | /* Lookup the language from among those we know. */ | |
2118 | lang = language_enum (cp); | |
2119 | ||
2120 | /* Now lookup the filename extension: do we already know it? */ | |
2121 | for (i = 0; i < fl_table_next; i++) | |
2122 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2123 | break; | |
2124 | ||
2125 | if (i >= fl_table_next) | |
2126 | { | |
2127 | /* new file extension */ | |
2128 | add_filename_language (ext_args, lang); | |
2129 | } | |
2130 | else | |
2131 | { | |
2132 | /* redefining a previously known filename extension */ | |
2133 | ||
2134 | /* if (from_tty) */ | |
2135 | /* query ("Really make files of type %s '%s'?", */ | |
2136 | /* ext_args, language_str (lang)); */ | |
2137 | ||
b8c9b27d | 2138 | xfree (filename_language_table[i].ext); |
4fcf66da | 2139 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2140 | filename_language_table[i].lang = lang; |
2141 | } | |
2142 | } | |
2143 | ||
2144 | static void | |
fba45db2 | 2145 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2146 | { |
2147 | int i; | |
2148 | ||
2149 | printf_filtered ("Filename extensions and the languages they represent:"); | |
2150 | printf_filtered ("\n\n"); | |
2151 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2152 | printf_filtered ("\t%s\t- %s\n", |
2153 | filename_language_table[i].ext, | |
c906108c SS |
2154 | language_str (filename_language_table[i].lang)); |
2155 | } | |
2156 | ||
2157 | static void | |
fba45db2 | 2158 | init_filename_language_table (void) |
c906108c SS |
2159 | { |
2160 | if (fl_table_size == 0) /* protect against repetition */ | |
2161 | { | |
2162 | fl_table_size = 20; | |
2163 | fl_table_next = 0; | |
c5aa993b | 2164 | filename_language_table = |
c906108c | 2165 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2166 | add_filename_language (".c", language_c); |
2167 | add_filename_language (".C", language_cplus); | |
2168 | add_filename_language (".cc", language_cplus); | |
2169 | add_filename_language (".cp", language_cplus); | |
2170 | add_filename_language (".cpp", language_cplus); | |
2171 | add_filename_language (".cxx", language_cplus); | |
2172 | add_filename_language (".c++", language_cplus); | |
2173 | add_filename_language (".java", language_java); | |
c906108c | 2174 | add_filename_language (".class", language_java); |
da2cf7e0 | 2175 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2176 | add_filename_language (".f", language_fortran); |
2177 | add_filename_language (".F", language_fortran); | |
2178 | add_filename_language (".s", language_asm); | |
2179 | add_filename_language (".S", language_asm); | |
c6fd39cd PM |
2180 | add_filename_language (".pas", language_pascal); |
2181 | add_filename_language (".p", language_pascal); | |
2182 | add_filename_language (".pp", language_pascal); | |
c906108c SS |
2183 | } |
2184 | } | |
2185 | ||
2186 | enum language | |
fba45db2 | 2187 | deduce_language_from_filename (char *filename) |
c906108c SS |
2188 | { |
2189 | int i; | |
2190 | char *cp; | |
2191 | ||
2192 | if (filename != NULL) | |
2193 | if ((cp = strrchr (filename, '.')) != NULL) | |
2194 | for (i = 0; i < fl_table_next; i++) | |
2195 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2196 | return filename_language_table[i].lang; | |
2197 | ||
2198 | return language_unknown; | |
2199 | } | |
2200 | \f | |
2201 | /* allocate_symtab: | |
2202 | ||
2203 | Allocate and partly initialize a new symbol table. Return a pointer | |
2204 | to it. error() if no space. | |
2205 | ||
2206 | Caller must set these fields: | |
c5aa993b JM |
2207 | LINETABLE(symtab) |
2208 | symtab->blockvector | |
2209 | symtab->dirname | |
2210 | symtab->free_code | |
2211 | symtab->free_ptr | |
2212 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2213 | */ |
2214 | ||
2215 | struct symtab * | |
fba45db2 | 2216 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2217 | { |
52f0bd74 | 2218 | struct symtab *symtab; |
c906108c SS |
2219 | |
2220 | symtab = (struct symtab *) | |
4a146b47 | 2221 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2222 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2223 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2224 | &objfile->objfile_obstack); |
c5aa993b JM |
2225 | symtab->fullname = NULL; |
2226 | symtab->language = deduce_language_from_filename (filename); | |
2227 | symtab->debugformat = obsavestring ("unknown", 7, | |
4a146b47 | 2228 | &objfile->objfile_obstack); |
c906108c SS |
2229 | |
2230 | /* Hook it to the objfile it comes from */ | |
2231 | ||
c5aa993b JM |
2232 | symtab->objfile = objfile; |
2233 | symtab->next = objfile->symtabs; | |
2234 | objfile->symtabs = symtab; | |
c906108c SS |
2235 | |
2236 | /* FIXME: This should go away. It is only defined for the Z8000, | |
2237 | and the Z8000 definition of this macro doesn't have anything to | |
2238 | do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just | |
2239 | here for convenience. */ | |
2240 | #ifdef INIT_EXTRA_SYMTAB_INFO | |
2241 | INIT_EXTRA_SYMTAB_INFO (symtab); | |
2242 | #endif | |
2243 | ||
2244 | return (symtab); | |
2245 | } | |
2246 | ||
2247 | struct partial_symtab * | |
fba45db2 | 2248 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2249 | { |
2250 | struct partial_symtab *psymtab; | |
2251 | ||
c5aa993b | 2252 | if (objfile->free_psymtabs) |
c906108c | 2253 | { |
c5aa993b JM |
2254 | psymtab = objfile->free_psymtabs; |
2255 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2256 | } |
2257 | else | |
2258 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2259 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2260 | sizeof (struct partial_symtab)); |
2261 | ||
2262 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2263 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2264 | &objfile->objfile_obstack); |
c5aa993b | 2265 | psymtab->symtab = NULL; |
c906108c SS |
2266 | |
2267 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2268 | Psymtabs are searched in most recent inserted -> least recent | |
2269 | inserted order. */ | |
2270 | ||
c5aa993b JM |
2271 | psymtab->objfile = objfile; |
2272 | psymtab->next = objfile->psymtabs; | |
2273 | objfile->psymtabs = psymtab; | |
c906108c SS |
2274 | #if 0 |
2275 | { | |
2276 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2277 | psymtab->objfile = objfile; |
2278 | psymtab->next = NULL; | |
2279 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2280 | while ((*prev_pst) != NULL) |
c5aa993b | 2281 | prev_pst = &((*prev_pst)->next); |
c906108c | 2282 | (*prev_pst) = psymtab; |
c5aa993b | 2283 | } |
c906108c | 2284 | #endif |
c5aa993b | 2285 | |
c906108c SS |
2286 | return (psymtab); |
2287 | } | |
2288 | ||
2289 | void | |
fba45db2 | 2290 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2291 | { |
2292 | struct partial_symtab **prev_pst; | |
2293 | ||
2294 | /* From dbxread.c: | |
2295 | Empty psymtabs happen as a result of header files which don't | |
2296 | have any symbols in them. There can be a lot of them. But this | |
2297 | check is wrong, in that a psymtab with N_SLINE entries but | |
2298 | nothing else is not empty, but we don't realize that. Fixing | |
2299 | that without slowing things down might be tricky. */ | |
2300 | ||
2301 | /* First, snip it out of the psymtab chain */ | |
2302 | ||
2303 | prev_pst = &(pst->objfile->psymtabs); | |
2304 | while ((*prev_pst) != pst) | |
2305 | prev_pst = &((*prev_pst)->next); | |
2306 | (*prev_pst) = pst->next; | |
2307 | ||
2308 | /* Next, put it on a free list for recycling */ | |
2309 | ||
2310 | pst->next = pst->objfile->free_psymtabs; | |
2311 | pst->objfile->free_psymtabs = pst; | |
2312 | } | |
c906108c | 2313 | \f |
c5aa993b | 2314 | |
c906108c SS |
2315 | /* Reset all data structures in gdb which may contain references to symbol |
2316 | table data. */ | |
2317 | ||
2318 | void | |
fba45db2 | 2319 | clear_symtab_users (void) |
c906108c SS |
2320 | { |
2321 | /* Someday, we should do better than this, by only blowing away | |
2322 | the things that really need to be blown. */ | |
2323 | clear_value_history (); | |
2324 | clear_displays (); | |
2325 | clear_internalvars (); | |
2326 | breakpoint_re_set (); | |
2327 | set_default_breakpoint (0, 0, 0, 0); | |
0378c332 | 2328 | clear_current_source_symtab_and_line (); |
c906108c | 2329 | clear_pc_function_cache (); |
9a4105ab AC |
2330 | if (deprecated_target_new_objfile_hook) |
2331 | deprecated_target_new_objfile_hook (NULL); | |
c906108c SS |
2332 | } |
2333 | ||
74b7792f AC |
2334 | static void |
2335 | clear_symtab_users_cleanup (void *ignore) | |
2336 | { | |
2337 | clear_symtab_users (); | |
2338 | } | |
2339 | ||
c906108c SS |
2340 | /* clear_symtab_users_once: |
2341 | ||
2342 | This function is run after symbol reading, or from a cleanup. | |
2343 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2344 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2345 | reference it have not yet been cleared or re-directed. (The old |
2346 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2347 | below.) | |
2348 | ||
2349 | This function can be queued N times as a cleanup, or called | |
2350 | directly; it will do all the work the first time, and then will be a | |
2351 | no-op until the next time it is queued. This works by bumping a | |
2352 | counter at queueing time. Much later when the cleanup is run, or at | |
2353 | the end of symbol processing (in case the cleanup is discarded), if | |
2354 | the queued count is greater than the "done-count", we do the work | |
2355 | and set the done-count to the queued count. If the queued count is | |
2356 | less than or equal to the done-count, we just ignore the call. This | |
2357 | is needed because reading a single .o file will often replace many | |
2358 | symtabs (one per .h file, for example), and we don't want to reset | |
2359 | the breakpoints N times in the user's face. | |
2360 | ||
2361 | The reason we both queue a cleanup, and call it directly after symbol | |
2362 | reading, is because the cleanup protects us in case of errors, but is | |
2363 | discarded if symbol reading is successful. */ | |
2364 | ||
2365 | #if 0 | |
2366 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2367 | is no longer needed. */ | |
a14ed312 | 2368 | static void clear_symtab_users_once (void); |
c906108c SS |
2369 | |
2370 | static int clear_symtab_users_queued; | |
2371 | static int clear_symtab_users_done; | |
2372 | ||
2373 | static void | |
fba45db2 | 2374 | clear_symtab_users_once (void) |
c906108c SS |
2375 | { |
2376 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2377 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2378 | return; | |
2379 | clear_symtab_users_done = clear_symtab_users_queued; | |
2380 | ||
2381 | clear_symtab_users (); | |
2382 | } | |
2383 | #endif | |
2384 | ||
2385 | /* Delete the specified psymtab, and any others that reference it. */ | |
2386 | ||
2387 | static void | |
fba45db2 | 2388 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2389 | { |
2390 | struct partial_symtab *ps, *pprev = NULL; | |
2391 | int i; | |
2392 | ||
2393 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2394 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2395 | { | |
2396 | if (ps == pst) | |
2397 | break; | |
2398 | pprev = ps; | |
2399 | } | |
c906108c | 2400 | |
c5aa993b JM |
2401 | if (ps) |
2402 | { | |
2403 | /* Unhook it from the chain. */ | |
2404 | if (ps == pst->objfile->psymtabs) | |
2405 | pst->objfile->psymtabs = ps->next; | |
2406 | else | |
2407 | pprev->next = ps->next; | |
2408 | ||
2409 | /* FIXME, we can't conveniently deallocate the entries in the | |
2410 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2411 | this psymtab points to. These just take up space until all | |
2412 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2413 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2414 | |
2415 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2416 | again: | |
2417 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2418 | { | |
2419 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2420 | { | |
2421 | if (ps->dependencies[i] == pst) | |
2422 | { | |
2423 | cashier_psymtab (ps); | |
2424 | goto again; /* Must restart, chain has been munged. */ | |
2425 | } | |
2426 | } | |
c906108c | 2427 | } |
c906108c | 2428 | } |
c906108c SS |
2429 | } |
2430 | ||
2431 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2432 | with any dependent breakpoints, displays, etc. | |
2433 | Used when loading new versions of object modules with the "add-file" | |
2434 | command. This is only called on the top-level symtab or psymtab's name; | |
2435 | it is not called for subsidiary files such as .h files. | |
2436 | ||
2437 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2438 | FIXME. The return value appears to never be used. |
c906108c SS |
2439 | |
2440 | FIXME. I think this is not the best way to do this. We should | |
2441 | work on being gentler to the environment while still cleaning up | |
2442 | all stray pointers into the freed symtab. */ | |
2443 | ||
2444 | int | |
fba45db2 | 2445 | free_named_symtabs (char *name) |
c906108c SS |
2446 | { |
2447 | #if 0 | |
2448 | /* FIXME: With the new method of each objfile having it's own | |
2449 | psymtab list, this function needs serious rethinking. In particular, | |
2450 | why was it ever necessary to toss psymtabs with specific compilation | |
2451 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2452 | file? -- fnf | |
2453 | Well, the answer is that some systems permit reloading of particular | |
2454 | compilation units. We want to blow away any old info about these | |
2455 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2456 | ||
52f0bd74 AC |
2457 | struct symtab *s; |
2458 | struct symtab *prev; | |
2459 | struct partial_symtab *ps; | |
c906108c SS |
2460 | struct blockvector *bv; |
2461 | int blewit = 0; | |
2462 | ||
2463 | /* We only wack things if the symbol-reload switch is set. */ | |
2464 | if (!symbol_reloading) | |
2465 | return 0; | |
2466 | ||
2467 | /* Some symbol formats have trouble providing file names... */ | |
2468 | if (name == 0 || *name == '\0') | |
2469 | return 0; | |
2470 | ||
2471 | /* Look for a psymtab with the specified name. */ | |
2472 | ||
2473 | again2: | |
c5aa993b JM |
2474 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2475 | { | |
6314a349 | 2476 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2477 | { |
2478 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2479 | goto again2; /* Must restart, chain has been munged */ | |
2480 | } | |
c906108c | 2481 | } |
c906108c SS |
2482 | |
2483 | /* Look for a symtab with the specified name. */ | |
2484 | ||
2485 | for (s = symtab_list; s; s = s->next) | |
2486 | { | |
6314a349 | 2487 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2488 | break; |
2489 | prev = s; | |
2490 | } | |
2491 | ||
2492 | if (s) | |
2493 | { | |
2494 | if (s == symtab_list) | |
2495 | symtab_list = s->next; | |
2496 | else | |
2497 | prev->next = s->next; | |
2498 | ||
2499 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2500 | or not they depend on the symtab being freed. This should be |
2501 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2502 | |
2503 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2504 | This test is necessary due to a bug in "dbxread.c" that |
2505 | causes empty symtabs to be created for N_SO symbols that | |
2506 | contain the pathname of the object file. (This problem | |
2507 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2508 | |
2509 | bv = BLOCKVECTOR (s); | |
2510 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2511 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2512 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2513 | { | |
b9caf505 AC |
2514 | complaint (&symfile_complaints, "Replacing old symbols for `%s'", |
2515 | name); | |
c906108c SS |
2516 | clear_symtab_users_queued++; |
2517 | make_cleanup (clear_symtab_users_once, 0); | |
2518 | blewit = 1; | |
c5aa993b JM |
2519 | } |
2520 | else | |
2521 | { | |
b9caf505 AC |
2522 | complaint (&symfile_complaints, "Empty symbol table found for `%s'", |
2523 | name); | |
c906108c SS |
2524 | } |
2525 | ||
2526 | free_symtab (s); | |
2527 | } | |
2528 | else | |
2529 | { | |
2530 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
2531 | even though no symtab was found, since the file might have |
2532 | been compiled without debugging, and hence not be associated | |
2533 | with a symtab. In order to handle this correctly, we would need | |
2534 | to keep a list of text address ranges for undebuggable files. | |
2535 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
2536 | ; |
2537 | } | |
2538 | ||
2539 | /* FIXME, what about the minimal symbol table? */ | |
2540 | return blewit; | |
2541 | #else | |
2542 | return (0); | |
2543 | #endif | |
2544 | } | |
2545 | \f | |
2546 | /* Allocate and partially fill a partial symtab. It will be | |
2547 | completely filled at the end of the symbol list. | |
2548 | ||
d4f3574e | 2549 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
2550 | |
2551 | struct partial_symtab * | |
fba45db2 KB |
2552 | start_psymtab_common (struct objfile *objfile, |
2553 | struct section_offsets *section_offsets, char *filename, | |
2554 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
2555 | struct partial_symbol **static_syms) | |
c906108c SS |
2556 | { |
2557 | struct partial_symtab *psymtab; | |
2558 | ||
2559 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
2560 | psymtab->section_offsets = section_offsets; |
2561 | psymtab->textlow = textlow; | |
2562 | psymtab->texthigh = psymtab->textlow; /* default */ | |
2563 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
2564 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
2565 | return (psymtab); |
2566 | } | |
2567 | \f | |
2568 | /* Add a symbol with a long value to a psymtab. | |
5417f6dc | 2569 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
2570 | Return the partial symbol that has been added. */ |
2571 | ||
2572 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
2573 | symbol is so that callers can get access to the symbol's demangled | |
2574 | name, which they don't have any cheap way to determine otherwise. | |
2575 | (Currenly, dwarf2read.c is the only file who uses that information, | |
2576 | though it's possible that other readers might in the future.) | |
2577 | Elena wasn't thrilled about that, and I don't blame her, but we | |
2578 | couldn't come up with a better way to get that information. If | |
2579 | it's needed in other situations, we could consider breaking up | |
2580 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
2581 | cache. */ | |
2582 | ||
2583 | const struct partial_symbol * | |
176620f1 | 2584 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 KB |
2585 | enum address_class class, |
2586 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2587 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2588 | enum language language, struct objfile *objfile) | |
c906108c | 2589 | { |
52f0bd74 | 2590 | struct partial_symbol *psym; |
c906108c SS |
2591 | char *buf = alloca (namelength + 1); |
2592 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2593 | structure which might contain random data, causing cache misses in | |
2594 | bcache. */ | |
2595 | static struct partial_symbol psymbol; | |
2596 | ||
2597 | /* Create local copy of the partial symbol */ | |
2598 | memcpy (buf, name, namelength); | |
2599 | buf[namelength] = '\0'; | |
c906108c SS |
2600 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ |
2601 | if (val != 0) | |
2602 | { | |
2603 | SYMBOL_VALUE (&psymbol) = val; | |
2604 | } | |
2605 | else | |
2606 | { | |
2607 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2608 | } | |
2609 | SYMBOL_SECTION (&psymbol) = 0; | |
2610 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2611 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c | 2612 | PSYMBOL_CLASS (&psymbol) = class; |
2de7ced7 DJ |
2613 | |
2614 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
c906108c SS |
2615 | |
2616 | /* Stash the partial symbol away in the cache */ | |
3a16a68c AC |
2617 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), |
2618 | objfile->psymbol_cache); | |
c906108c SS |
2619 | |
2620 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2621 | if (list->next >= list->list + list->size) | |
2622 | { | |
2623 | extend_psymbol_list (list, objfile); | |
2624 | } | |
2625 | *list->next++ = psym; | |
2626 | OBJSTAT (objfile, n_psyms++); | |
5c4e30ca DC |
2627 | |
2628 | return psym; | |
c906108c SS |
2629 | } |
2630 | ||
2631 | /* Add a symbol with a long value to a psymtab. This differs from | |
2632 | * add_psymbol_to_list above in taking both a mangled and a demangled | |
2633 | * name. */ | |
2634 | ||
2635 | void | |
fba45db2 | 2636 | add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name, |
176620f1 | 2637 | int dem_namelength, domain_enum domain, |
fba45db2 KB |
2638 | enum address_class class, |
2639 | struct psymbol_allocation_list *list, long val, /* Value as a long */ | |
2640 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
2641 | enum language language, | |
2642 | struct objfile *objfile) | |
c906108c | 2643 | { |
52f0bd74 | 2644 | struct partial_symbol *psym; |
c906108c SS |
2645 | char *buf = alloca (namelength + 1); |
2646 | /* psymbol is static so that there will be no uninitialized gaps in the | |
2647 | structure which might contain random data, causing cache misses in | |
2648 | bcache. */ | |
2649 | static struct partial_symbol psymbol; | |
2650 | ||
2651 | /* Create local copy of the partial symbol */ | |
2652 | ||
2653 | memcpy (buf, name, namelength); | |
2654 | buf[namelength] = '\0'; | |
3a16a68c AC |
2655 | DEPRECATED_SYMBOL_NAME (&psymbol) = deprecated_bcache (buf, namelength + 1, |
2656 | objfile->psymbol_cache); | |
c906108c SS |
2657 | |
2658 | buf = alloca (dem_namelength + 1); | |
2659 | memcpy (buf, dem_name, dem_namelength); | |
2660 | buf[dem_namelength] = '\0'; | |
c5aa993b | 2661 | |
c906108c SS |
2662 | switch (language) |
2663 | { | |
c5aa993b JM |
2664 | case language_c: |
2665 | case language_cplus: | |
2666 | SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) = | |
3a16a68c | 2667 | deprecated_bcache (buf, dem_namelength + 1, objfile->psymbol_cache); |
c5aa993b | 2668 | break; |
c906108c SS |
2669 | /* FIXME What should be done for the default case? Ignoring for now. */ |
2670 | } | |
2671 | ||
2672 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
2673 | if (val != 0) | |
2674 | { | |
2675 | SYMBOL_VALUE (&psymbol) = val; | |
2676 | } | |
2677 | else | |
2678 | { | |
2679 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
2680 | } | |
2681 | SYMBOL_SECTION (&psymbol) = 0; | |
2682 | SYMBOL_LANGUAGE (&psymbol) = language; | |
176620f1 | 2683 | PSYMBOL_DOMAIN (&psymbol) = domain; |
c906108c SS |
2684 | PSYMBOL_CLASS (&psymbol) = class; |
2685 | SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language); | |
2686 | ||
2687 | /* Stash the partial symbol away in the cache */ | |
3a16a68c AC |
2688 | psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol), |
2689 | objfile->psymbol_cache); | |
c906108c SS |
2690 | |
2691 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ | |
2692 | if (list->next >= list->list + list->size) | |
2693 | { | |
2694 | extend_psymbol_list (list, objfile); | |
2695 | } | |
2696 | *list->next++ = psym; | |
2697 | OBJSTAT (objfile, n_psyms++); | |
2698 | } | |
2699 | ||
2700 | /* Initialize storage for partial symbols. */ | |
2701 | ||
2702 | void | |
fba45db2 | 2703 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
2704 | { |
2705 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
2706 | |
2707 | if (objfile->global_psymbols.list) | |
c906108c | 2708 | { |
4efb68b1 | 2709 | xmfree (objfile->md, objfile->global_psymbols.list); |
c906108c | 2710 | } |
c5aa993b | 2711 | if (objfile->static_psymbols.list) |
c906108c | 2712 | { |
4efb68b1 | 2713 | xmfree (objfile->md, objfile->static_psymbols.list); |
c906108c | 2714 | } |
c5aa993b | 2715 | |
c906108c SS |
2716 | /* Current best guess is that approximately a twentieth |
2717 | of the total symbols (in a debugging file) are global or static | |
2718 | oriented symbols */ | |
c906108c | 2719 | |
c5aa993b JM |
2720 | objfile->global_psymbols.size = total_symbols / 10; |
2721 | objfile->static_psymbols.size = total_symbols / 10; | |
2722 | ||
2723 | if (objfile->global_psymbols.size > 0) | |
c906108c | 2724 | { |
c5aa993b JM |
2725 | objfile->global_psymbols.next = |
2726 | objfile->global_psymbols.list = (struct partial_symbol **) | |
2727 | xmmalloc (objfile->md, (objfile->global_psymbols.size | |
2728 | * sizeof (struct partial_symbol *))); | |
c906108c | 2729 | } |
c5aa993b | 2730 | if (objfile->static_psymbols.size > 0) |
c906108c | 2731 | { |
c5aa993b JM |
2732 | objfile->static_psymbols.next = |
2733 | objfile->static_psymbols.list = (struct partial_symbol **) | |
2734 | xmmalloc (objfile->md, (objfile->static_psymbols.size | |
2735 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
2736 | } |
2737 | } | |
2738 | ||
2739 | /* OVERLAYS: | |
2740 | The following code implements an abstraction for debugging overlay sections. | |
2741 | ||
2742 | The target model is as follows: | |
2743 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 2744 | same VMA, each with its own unique LMA (or load address). |
c906108c | 2745 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 2746 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 2747 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
2748 | sections should be considered to be mapped from the VMA to the LMA. |
2749 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 2750 | For instance, if a section has been mapped then its contents |
c5aa993b | 2751 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
2752 | |
2753 | Two levels of debugger support for overlays are available. One is | |
2754 | "manual", in which the debugger relies on the user to tell it which | |
2755 | overlays are currently mapped. This level of support is | |
2756 | implemented entirely in the core debugger, and the information about | |
2757 | whether a section is mapped is kept in the objfile->obj_section table. | |
2758 | ||
2759 | The second level of support is "automatic", and is only available if | |
2760 | the target-specific code provides functionality to read the target's | |
2761 | overlay mapping table, and translate its contents for the debugger | |
2762 | (by updating the mapped state information in the obj_section tables). | |
2763 | ||
2764 | The interface is as follows: | |
c5aa993b JM |
2765 | User commands: |
2766 | overlay map <name> -- tell gdb to consider this section mapped | |
2767 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
2768 | overlay list -- list the sections that GDB thinks are mapped | |
2769 | overlay read-target -- get the target's state of what's mapped | |
2770 | overlay off/manual/auto -- set overlay debugging state | |
2771 | Functional interface: | |
2772 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
2773 | section, return that section. | |
5417f6dc | 2774 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b JM |
2775 | the pc, either in its VMA or its LMA |
2776 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
2777 | section_is_overlay(sect): true if section's VMA != LMA | |
2778 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
2779 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 2780 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
2781 | overlay_mapped_address(...): map an address from section's LMA to VMA |
2782 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
2783 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
2784 | either in VMA or LMA depending on whether | |
2785 | the symbol's section is currently mapped | |
c906108c SS |
2786 | */ |
2787 | ||
2788 | /* Overlay debugging state: */ | |
2789 | ||
d874f1e2 | 2790 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
2791 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
2792 | ||
2793 | /* Target vector for refreshing overlay mapped state */ | |
a14ed312 | 2794 | static void simple_overlay_update (struct obj_section *); |
507f3c78 | 2795 | void (*target_overlay_update) (struct obj_section *) = simple_overlay_update; |
c906108c SS |
2796 | |
2797 | /* Function: section_is_overlay (SECTION) | |
5417f6dc | 2798 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
2799 | SECTION is loaded at an address different from where it will "run". */ |
2800 | ||
2801 | int | |
fba45db2 | 2802 | section_is_overlay (asection *section) |
c906108c | 2803 | { |
fbd35540 MS |
2804 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2805 | ||
c906108c SS |
2806 | if (overlay_debugging) |
2807 | if (section && section->lma != 0 && | |
2808 | section->vma != section->lma) | |
2809 | return 1; | |
2810 | ||
2811 | return 0; | |
2812 | } | |
2813 | ||
2814 | /* Function: overlay_invalidate_all (void) | |
2815 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
2816 | ||
2817 | static void | |
fba45db2 | 2818 | overlay_invalidate_all (void) |
c906108c | 2819 | { |
c5aa993b | 2820 | struct objfile *objfile; |
c906108c SS |
2821 | struct obj_section *sect; |
2822 | ||
2823 | ALL_OBJSECTIONS (objfile, sect) | |
2824 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 2825 | sect->ovly_mapped = -1; |
c906108c SS |
2826 | } |
2827 | ||
2828 | /* Function: overlay_is_mapped (SECTION) | |
5417f6dc | 2829 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
2830 | Private: public access is thru function section_is_mapped. |
2831 | ||
2832 | Access to the ovly_mapped flag is restricted to this function, so | |
2833 | that we can do automatic update. If the global flag | |
2834 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
2835 | overlay_invalidate_all. If the mapped state of the particular | |
2836 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
2837 | ||
c5aa993b | 2838 | static int |
fba45db2 | 2839 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
2840 | { |
2841 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
2842 | return 0; | |
2843 | ||
c5aa993b | 2844 | switch (overlay_debugging) |
c906108c SS |
2845 | { |
2846 | default: | |
d874f1e2 | 2847 | case ovly_off: |
c5aa993b | 2848 | return 0; /* overlay debugging off */ |
d874f1e2 | 2849 | case ovly_auto: /* overlay debugging automatic */ |
5417f6dc | 2850 | /* Unles there is a target_overlay_update function, |
c5aa993b | 2851 | there's really nothing useful to do here (can't really go auto) */ |
c906108c SS |
2852 | if (target_overlay_update) |
2853 | { | |
2854 | if (overlay_cache_invalid) | |
2855 | { | |
2856 | overlay_invalidate_all (); | |
2857 | overlay_cache_invalid = 0; | |
2858 | } | |
2859 | if (osect->ovly_mapped == -1) | |
2860 | (*target_overlay_update) (osect); | |
2861 | } | |
2862 | /* fall thru to manual case */ | |
d874f1e2 | 2863 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
2864 | return osect->ovly_mapped == 1; |
2865 | } | |
2866 | } | |
2867 | ||
2868 | /* Function: section_is_mapped | |
2869 | Returns true if section is an overlay, and is currently mapped. */ | |
2870 | ||
2871 | int | |
fba45db2 | 2872 | section_is_mapped (asection *section) |
c906108c | 2873 | { |
c5aa993b | 2874 | struct objfile *objfile; |
c906108c SS |
2875 | struct obj_section *osect; |
2876 | ||
2877 | if (overlay_debugging) | |
2878 | if (section && section_is_overlay (section)) | |
2879 | ALL_OBJSECTIONS (objfile, osect) | |
2880 | if (osect->the_bfd_section == section) | |
c5aa993b | 2881 | return overlay_is_mapped (osect); |
c906108c SS |
2882 | |
2883 | return 0; | |
2884 | } | |
2885 | ||
2886 | /* Function: pc_in_unmapped_range | |
2887 | If PC falls into the lma range of SECTION, return true, else false. */ | |
2888 | ||
2889 | CORE_ADDR | |
fba45db2 | 2890 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2891 | { |
fbd35540 MS |
2892 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2893 | ||
c906108c SS |
2894 | int size; |
2895 | ||
2896 | if (overlay_debugging) | |
2897 | if (section && section_is_overlay (section)) | |
2898 | { | |
2899 | size = bfd_get_section_size_before_reloc (section); | |
2900 | if (section->lma <= pc && pc < section->lma + size) | |
2901 | return 1; | |
2902 | } | |
2903 | return 0; | |
2904 | } | |
2905 | ||
2906 | /* Function: pc_in_mapped_range | |
2907 | If PC falls into the vma range of SECTION, return true, else false. */ | |
2908 | ||
2909 | CORE_ADDR | |
fba45db2 | 2910 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 2911 | { |
fbd35540 MS |
2912 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2913 | ||
c906108c SS |
2914 | int size; |
2915 | ||
2916 | if (overlay_debugging) | |
2917 | if (section && section_is_overlay (section)) | |
2918 | { | |
2919 | size = bfd_get_section_size_before_reloc (section); | |
2920 | if (section->vma <= pc && pc < section->vma + size) | |
2921 | return 1; | |
2922 | } | |
2923 | return 0; | |
2924 | } | |
2925 | ||
9ec8e6a0 JB |
2926 | |
2927 | /* Return true if the mapped ranges of sections A and B overlap, false | |
2928 | otherwise. */ | |
b9362cc7 | 2929 | static int |
9ec8e6a0 JB |
2930 | sections_overlap (asection *a, asection *b) |
2931 | { | |
fbd35540 MS |
2932 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2933 | ||
9ec8e6a0 JB |
2934 | CORE_ADDR a_start = a->vma; |
2935 | CORE_ADDR a_end = a->vma + bfd_get_section_size_before_reloc (a); | |
2936 | CORE_ADDR b_start = b->vma; | |
2937 | CORE_ADDR b_end = b->vma + bfd_get_section_size_before_reloc (b); | |
2938 | ||
2939 | return (a_start < b_end && b_start < a_end); | |
2940 | } | |
2941 | ||
c906108c SS |
2942 | /* Function: overlay_unmapped_address (PC, SECTION) |
2943 | Returns the address corresponding to PC in the unmapped (load) range. | |
2944 | May be the same as PC. */ | |
2945 | ||
2946 | CORE_ADDR | |
fba45db2 | 2947 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2948 | { |
fbd35540 MS |
2949 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
2950 | ||
c906108c SS |
2951 | if (overlay_debugging) |
2952 | if (section && section_is_overlay (section) && | |
2953 | pc_in_mapped_range (pc, section)) | |
2954 | return pc + section->lma - section->vma; | |
2955 | ||
2956 | return pc; | |
2957 | } | |
2958 | ||
2959 | /* Function: overlay_mapped_address (PC, SECTION) | |
2960 | Returns the address corresponding to PC in the mapped (runtime) range. | |
2961 | May be the same as PC. */ | |
2962 | ||
2963 | CORE_ADDR | |
fba45db2 | 2964 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 2965 | { |
fbd35540 MS |
2966 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
2967 | ||
c906108c SS |
2968 | if (overlay_debugging) |
2969 | if (section && section_is_overlay (section) && | |
2970 | pc_in_unmapped_range (pc, section)) | |
2971 | return pc + section->vma - section->lma; | |
2972 | ||
2973 | return pc; | |
2974 | } | |
2975 | ||
2976 | ||
5417f6dc | 2977 | /* Function: symbol_overlayed_address |
c906108c SS |
2978 | Return one of two addresses (relative to the VMA or to the LMA), |
2979 | depending on whether the section is mapped or not. */ | |
2980 | ||
c5aa993b | 2981 | CORE_ADDR |
fba45db2 | 2982 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
2983 | { |
2984 | if (overlay_debugging) | |
2985 | { | |
2986 | /* If the symbol has no section, just return its regular address. */ | |
2987 | if (section == 0) | |
2988 | return address; | |
2989 | /* If the symbol's section is not an overlay, just return its address */ | |
2990 | if (!section_is_overlay (section)) | |
2991 | return address; | |
2992 | /* If the symbol's section is mapped, just return its address */ | |
2993 | if (section_is_mapped (section)) | |
2994 | return address; | |
2995 | /* | |
2996 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
2997 | * then return its LOADED address rather than its vma address!! | |
2998 | */ | |
2999 | return overlay_unmapped_address (address, section); | |
3000 | } | |
3001 | return address; | |
3002 | } | |
3003 | ||
5417f6dc | 3004 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3005 | Return the best-match overlay section for PC: |
3006 | If PC matches a mapped overlay section's VMA, return that section. | |
3007 | Else if PC matches an unmapped section's VMA, return that section. | |
3008 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3009 | ||
3010 | asection * | |
fba45db2 | 3011 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3012 | { |
c5aa993b | 3013 | struct objfile *objfile; |
c906108c SS |
3014 | struct obj_section *osect, *best_match = NULL; |
3015 | ||
3016 | if (overlay_debugging) | |
3017 | ALL_OBJSECTIONS (objfile, osect) | |
3018 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3019 | { |
3020 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3021 | { | |
3022 | if (overlay_is_mapped (osect)) | |
3023 | return osect->the_bfd_section; | |
3024 | else | |
3025 | best_match = osect; | |
3026 | } | |
3027 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3028 | best_match = osect; | |
3029 | } | |
c906108c SS |
3030 | return best_match ? best_match->the_bfd_section : NULL; |
3031 | } | |
3032 | ||
3033 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3034 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3035 | currently marked as MAPPED, return that section. Else return NULL. */ |
3036 | ||
3037 | asection * | |
fba45db2 | 3038 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3039 | { |
c5aa993b | 3040 | struct objfile *objfile; |
c906108c SS |
3041 | struct obj_section *osect; |
3042 | ||
3043 | if (overlay_debugging) | |
3044 | ALL_OBJSECTIONS (objfile, osect) | |
3045 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3046 | overlay_is_mapped (osect)) | |
c5aa993b | 3047 | return osect->the_bfd_section; |
c906108c SS |
3048 | |
3049 | return NULL; | |
3050 | } | |
3051 | ||
3052 | /* Function: list_overlays_command | |
3053 | Print a list of mapped sections and their PC ranges */ | |
3054 | ||
3055 | void | |
fba45db2 | 3056 | list_overlays_command (char *args, int from_tty) |
c906108c | 3057 | { |
c5aa993b JM |
3058 | int nmapped = 0; |
3059 | struct objfile *objfile; | |
c906108c SS |
3060 | struct obj_section *osect; |
3061 | ||
3062 | if (overlay_debugging) | |
3063 | ALL_OBJSECTIONS (objfile, osect) | |
3064 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3065 | { |
3066 | const char *name; | |
3067 | bfd_vma lma, vma; | |
3068 | int size; | |
3069 | ||
3070 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3071 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
3072 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3073 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); | |
3074 | ||
3075 | printf_filtered ("Section %s, loaded at ", name); | |
3076 | print_address_numeric (lma, 1, gdb_stdout); | |
3077 | puts_filtered (" - "); | |
3078 | print_address_numeric (lma + size, 1, gdb_stdout); | |
3079 | printf_filtered (", mapped at "); | |
3080 | print_address_numeric (vma, 1, gdb_stdout); | |
3081 | puts_filtered (" - "); | |
3082 | print_address_numeric (vma + size, 1, gdb_stdout); | |
3083 | puts_filtered ("\n"); | |
3084 | ||
3085 | nmapped++; | |
3086 | } | |
c906108c SS |
3087 | if (nmapped == 0) |
3088 | printf_filtered ("No sections are mapped.\n"); | |
3089 | } | |
3090 | ||
3091 | /* Function: map_overlay_command | |
3092 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3093 | ||
3094 | void | |
fba45db2 | 3095 | map_overlay_command (char *args, int from_tty) |
c906108c | 3096 | { |
c5aa993b JM |
3097 | struct objfile *objfile, *objfile2; |
3098 | struct obj_section *sec, *sec2; | |
3099 | asection *bfdsec; | |
c906108c SS |
3100 | |
3101 | if (!overlay_debugging) | |
515ad16c EZ |
3102 | error ("\ |
3103 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3104 | the 'overlay manual' command."); | |
c906108c SS |
3105 | |
3106 | if (args == 0 || *args == 0) | |
3107 | error ("Argument required: name of an overlay section"); | |
3108 | ||
3109 | /* First, find a section matching the user supplied argument */ | |
3110 | ALL_OBJSECTIONS (objfile, sec) | |
3111 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3112 | { |
3113 | /* Now, check to see if the section is an overlay. */ | |
3114 | bfdsec = sec->the_bfd_section; | |
3115 | if (!section_is_overlay (bfdsec)) | |
3116 | continue; /* not an overlay section */ | |
3117 | ||
3118 | /* Mark the overlay as "mapped" */ | |
3119 | sec->ovly_mapped = 1; | |
3120 | ||
3121 | /* Next, make a pass and unmap any sections that are | |
3122 | overlapped by this new section: */ | |
3123 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3124 | if (sec2->ovly_mapped |
3125 | && sec != sec2 | |
3126 | && sec->the_bfd_section != sec2->the_bfd_section | |
3127 | && sections_overlap (sec->the_bfd_section, | |
3128 | sec2->the_bfd_section)) | |
c5aa993b JM |
3129 | { |
3130 | if (info_verbose) | |
46f45a4a | 3131 | printf_unfiltered ("Note: section %s unmapped by overlap\n", |
c5aa993b JM |
3132 | bfd_section_name (objfile->obfd, |
3133 | sec2->the_bfd_section)); | |
3134 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3135 | } | |
3136 | return; | |
3137 | } | |
c906108c SS |
3138 | error ("No overlay section called %s", args); |
3139 | } | |
3140 | ||
3141 | /* Function: unmap_overlay_command | |
5417f6dc | 3142 | Mark the overlay section as unmapped |
c906108c SS |
3143 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3144 | ||
3145 | void | |
fba45db2 | 3146 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3147 | { |
c5aa993b | 3148 | struct objfile *objfile; |
c906108c SS |
3149 | struct obj_section *sec; |
3150 | ||
3151 | if (!overlay_debugging) | |
515ad16c EZ |
3152 | error ("\ |
3153 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ | |
3154 | the 'overlay manual' command."); | |
c906108c SS |
3155 | |
3156 | if (args == 0 || *args == 0) | |
3157 | error ("Argument required: name of an overlay section"); | |
3158 | ||
3159 | /* First, find a section matching the user supplied argument */ | |
3160 | ALL_OBJSECTIONS (objfile, sec) | |
3161 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3162 | { |
3163 | if (!sec->ovly_mapped) | |
3164 | error ("Section %s is not mapped", args); | |
3165 | sec->ovly_mapped = 0; | |
3166 | return; | |
3167 | } | |
c906108c SS |
3168 | error ("No overlay section called %s", args); |
3169 | } | |
3170 | ||
3171 | /* Function: overlay_auto_command | |
3172 | A utility command to turn on overlay debugging. | |
3173 | Possibly this should be done via a set/show command. */ | |
3174 | ||
3175 | static void | |
fba45db2 | 3176 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3177 | { |
d874f1e2 | 3178 | overlay_debugging = ovly_auto; |
1900040c | 3179 | enable_overlay_breakpoints (); |
c906108c | 3180 | if (info_verbose) |
46f45a4a | 3181 | printf_unfiltered ("Automatic overlay debugging enabled."); |
c906108c SS |
3182 | } |
3183 | ||
3184 | /* Function: overlay_manual_command | |
3185 | A utility command to turn on overlay debugging. | |
3186 | Possibly this should be done via a set/show command. */ | |
3187 | ||
3188 | static void | |
fba45db2 | 3189 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3190 | { |
d874f1e2 | 3191 | overlay_debugging = ovly_on; |
1900040c | 3192 | disable_overlay_breakpoints (); |
c906108c | 3193 | if (info_verbose) |
46f45a4a | 3194 | printf_unfiltered ("Overlay debugging enabled."); |
c906108c SS |
3195 | } |
3196 | ||
3197 | /* Function: overlay_off_command | |
3198 | A utility command to turn on overlay debugging. | |
3199 | Possibly this should be done via a set/show command. */ | |
3200 | ||
3201 | static void | |
fba45db2 | 3202 | overlay_off_command (char *args, int from_tty) |
c906108c | 3203 | { |
d874f1e2 | 3204 | overlay_debugging = ovly_off; |
1900040c | 3205 | disable_overlay_breakpoints (); |
c906108c | 3206 | if (info_verbose) |
46f45a4a | 3207 | printf_unfiltered ("Overlay debugging disabled."); |
c906108c SS |
3208 | } |
3209 | ||
3210 | static void | |
fba45db2 | 3211 | overlay_load_command (char *args, int from_tty) |
c906108c SS |
3212 | { |
3213 | if (target_overlay_update) | |
3214 | (*target_overlay_update) (NULL); | |
3215 | else | |
3216 | error ("This target does not know how to read its overlay state."); | |
3217 | } | |
3218 | ||
3219 | /* Function: overlay_command | |
3220 | A place-holder for a mis-typed command */ | |
3221 | ||
3222 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3223 | struct cmd_list_element *overlaylist; | |
3224 | ||
3225 | static void | |
fba45db2 | 3226 | overlay_command (char *args, int from_tty) |
c906108c | 3227 | { |
c5aa993b | 3228 | printf_unfiltered |
c906108c SS |
3229 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3230 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3231 | } | |
3232 | ||
3233 | ||
3234 | /* Target Overlays for the "Simplest" overlay manager: | |
3235 | ||
5417f6dc RM |
3236 | This is GDB's default target overlay layer. It works with the |
3237 | minimal overlay manager supplied as an example by Cygnus. The | |
3238 | entry point is via a function pointer "target_overlay_update", | |
3239 | so targets that use a different runtime overlay manager can | |
c906108c SS |
3240 | substitute their own overlay_update function and take over the |
3241 | function pointer. | |
3242 | ||
3243 | The overlay_update function pokes around in the target's data structures | |
3244 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3245 | this information. | |
3246 | ||
3247 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3248 | unsigned _novlys; /# number of overlay sections #/ |
3249 | unsigned _ovly_table[_novlys][4] = { | |
3250 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3251 | {..., ..., ..., ...}, | |
3252 | } | |
3253 | unsigned _novly_regions; /# number of overlay regions #/ | |
3254 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3255 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3256 | {..., ..., ...}, | |
3257 | } | |
c906108c SS |
3258 | These functions will attempt to update GDB's mappedness state in the |
3259 | symbol section table, based on the target's mappedness state. | |
3260 | ||
3261 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3262 | attempt to detect when the cached copy is invalidated. The main | |
3263 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3264 | the cached table and re-reads only the entry for that section from | |
3265 | the target (whenever possible). | |
3266 | */ | |
3267 | ||
3268 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3269 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3270 | #if 0 |
c5aa993b | 3271 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3272 | #endif |
c5aa993b | 3273 | static unsigned cache_novlys = 0; |
c906108c | 3274 | #if 0 |
c5aa993b | 3275 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3276 | #endif |
3277 | static CORE_ADDR cache_ovly_table_base = 0; | |
3278 | #if 0 | |
3279 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3280 | #endif | |
c5aa993b JM |
3281 | enum ovly_index |
3282 | { | |
3283 | VMA, SIZE, LMA, MAPPED | |
3284 | }; | |
c906108c SS |
3285 | #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT) |
3286 | ||
3287 | /* Throw away the cached copy of _ovly_table */ | |
3288 | static void | |
fba45db2 | 3289 | simple_free_overlay_table (void) |
c906108c SS |
3290 | { |
3291 | if (cache_ovly_table) | |
b8c9b27d | 3292 | xfree (cache_ovly_table); |
c5aa993b | 3293 | cache_novlys = 0; |
c906108c SS |
3294 | cache_ovly_table = NULL; |
3295 | cache_ovly_table_base = 0; | |
3296 | } | |
3297 | ||
3298 | #if 0 | |
3299 | /* Throw away the cached copy of _ovly_region_table */ | |
3300 | static void | |
fba45db2 | 3301 | simple_free_overlay_region_table (void) |
c906108c SS |
3302 | { |
3303 | if (cache_ovly_region_table) | |
b8c9b27d | 3304 | xfree (cache_ovly_region_table); |
c5aa993b | 3305 | cache_novly_regions = 0; |
c906108c SS |
3306 | cache_ovly_region_table = NULL; |
3307 | cache_ovly_region_table_base = 0; | |
3308 | } | |
3309 | #endif | |
3310 | ||
3311 | /* Read an array of ints from the target into a local buffer. | |
3312 | Convert to host order. int LEN is number of ints */ | |
3313 | static void | |
fba45db2 | 3314 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3315 | { |
34c0bd93 | 3316 | /* FIXME (alloca): Not safe if array is very large. */ |
c906108c | 3317 | char *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3318 | int i; |
c906108c SS |
3319 | |
3320 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3321 | for (i = 0; i < len; i++) | |
c5aa993b | 3322 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3323 | TARGET_LONG_BYTES); |
3324 | } | |
3325 | ||
3326 | /* Find and grab a copy of the target _ovly_table | |
3327 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3328 | static int |
fba45db2 | 3329 | simple_read_overlay_table (void) |
c906108c | 3330 | { |
0d43edd1 | 3331 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3332 | |
3333 | simple_free_overlay_table (); | |
9b27852e | 3334 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3335 | if (! novlys_msym) |
c906108c | 3336 | { |
0d43edd1 JB |
3337 | error ("Error reading inferior's overlay table: " |
3338 | "couldn't find `_novlys' variable\n" | |
3339 | "in inferior. Use `overlay manual' mode."); | |
3340 | return 0; | |
c906108c | 3341 | } |
0d43edd1 | 3342 | |
9b27852e | 3343 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3344 | if (! ovly_table_msym) |
3345 | { | |
3346 | error ("Error reading inferior's overlay table: couldn't find " | |
3347 | "`_ovly_table' array\n" | |
3348 | "in inferior. Use `overlay manual' mode."); | |
3349 | return 0; | |
3350 | } | |
3351 | ||
3352 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3353 | cache_ovly_table | |
3354 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3355 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3356 | read_target_long_array (cache_ovly_table_base, | |
3357 | (int *) cache_ovly_table, | |
3358 | cache_novlys * 4); | |
3359 | ||
c5aa993b | 3360 | return 1; /* SUCCESS */ |
c906108c SS |
3361 | } |
3362 | ||
3363 | #if 0 | |
3364 | /* Find and grab a copy of the target _ovly_region_table | |
3365 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3366 | static int |
fba45db2 | 3367 | simple_read_overlay_region_table (void) |
c906108c SS |
3368 | { |
3369 | struct minimal_symbol *msym; | |
3370 | ||
3371 | simple_free_overlay_region_table (); | |
9b27852e | 3372 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3373 | if (msym != NULL) |
3374 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3375 | else |
3376 | return 0; /* failure */ | |
c906108c SS |
3377 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3378 | if (cache_ovly_region_table != NULL) | |
3379 | { | |
9b27852e | 3380 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3381 | if (msym != NULL) |
3382 | { | |
3383 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b JM |
3384 | read_target_long_array (cache_ovly_region_table_base, |
3385 | (int *) cache_ovly_region_table, | |
c906108c SS |
3386 | cache_novly_regions * 3); |
3387 | } | |
c5aa993b JM |
3388 | else |
3389 | return 0; /* failure */ | |
c906108c | 3390 | } |
c5aa993b JM |
3391 | else |
3392 | return 0; /* failure */ | |
3393 | return 1; /* SUCCESS */ | |
c906108c SS |
3394 | } |
3395 | #endif | |
3396 | ||
5417f6dc | 3397 | /* Function: simple_overlay_update_1 |
c906108c SS |
3398 | A helper function for simple_overlay_update. Assuming a cached copy |
3399 | of _ovly_table exists, look through it to find an entry whose vma, | |
3400 | lma and size match those of OSECT. Re-read the entry and make sure | |
3401 | it still matches OSECT (else the table may no longer be valid). | |
3402 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3403 | success, 0 for failure. */ | |
3404 | ||
3405 | static int | |
fba45db2 | 3406 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3407 | { |
3408 | int i, size; | |
fbd35540 MS |
3409 | bfd *obfd = osect->objfile->obfd; |
3410 | asection *bsect = osect->the_bfd_section; | |
c906108c SS |
3411 | |
3412 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3413 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3414 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3415 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3416 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3417 | { |
3418 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
3419 | (int *) cache_ovly_table[i], 4); | |
fbd35540 MS |
3420 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3421 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3422 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3423 | { |
3424 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3425 | return 1; | |
3426 | } | |
fbd35540 | 3427 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3428 | return 0; |
3429 | } | |
3430 | return 0; | |
3431 | } | |
3432 | ||
3433 | /* Function: simple_overlay_update | |
5417f6dc RM |
3434 | If OSECT is NULL, then update all sections' mapped state |
3435 | (after re-reading the entire target _ovly_table). | |
3436 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3437 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3438 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3439 | re-read the entire cache, and go ahead and update all sections. */ |
3440 | ||
3441 | static void | |
fba45db2 | 3442 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3443 | { |
c5aa993b | 3444 | struct objfile *objfile; |
c906108c SS |
3445 | |
3446 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3447 | if (osect) | |
3448 | /* Have we got a cached copy of the target's overlay table? */ | |
3449 | if (cache_ovly_table != NULL) | |
3450 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3451 | if (cache_ovly_table_base == |
9b27852e | 3452 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3453 | /* Then go ahead and try to look up this single section in the cache */ |
3454 | if (simple_overlay_update_1 (osect)) | |
3455 | /* Found it! We're done. */ | |
3456 | return; | |
3457 | ||
3458 | /* Cached table no good: need to read the entire table anew. | |
3459 | Or else we want all the sections, in which case it's actually | |
3460 | more efficient to read the whole table in one block anyway. */ | |
3461 | ||
0d43edd1 JB |
3462 | if (! simple_read_overlay_table ()) |
3463 | return; | |
3464 | ||
c906108c SS |
3465 | /* Now may as well update all sections, even if only one was requested. */ |
3466 | ALL_OBJSECTIONS (objfile, osect) | |
3467 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3468 | { |
3469 | int i, size; | |
fbd35540 MS |
3470 | bfd *obfd = osect->objfile->obfd; |
3471 | asection *bsect = osect->the_bfd_section; | |
c5aa993b JM |
3472 | |
3473 | size = bfd_get_section_size_before_reloc (osect->the_bfd_section); | |
3474 | for (i = 0; i < cache_novlys; i++) | |
fbd35540 MS |
3475 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3476 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3477 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3478 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3479 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3480 | break; /* finished with inner for loop: break out */ | |
3481 | } | |
3482 | } | |
c906108c SS |
3483 | } |
3484 | ||
086df311 DJ |
3485 | /* Set the output sections and output offsets for section SECTP in |
3486 | ABFD. The relocation code in BFD will read these offsets, so we | |
3487 | need to be sure they're initialized. We map each section to itself, | |
3488 | with no offset; this means that SECTP->vma will be honored. */ | |
3489 | ||
3490 | static void | |
3491 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3492 | { | |
3493 | sectp->output_section = sectp; | |
3494 | sectp->output_offset = 0; | |
3495 | } | |
3496 | ||
3497 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3498 | contents are stored in BUF if it is non-NULL, or returned in a | |
3499 | malloc'd buffer otherwise. | |
3500 | ||
3501 | For some platforms and debug info formats, shared libraries contain | |
3502 | relocations against the debug sections (particularly for DWARF-2; | |
3503 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3504 | the version of the linker in use). Also, ELF object files naturally | |
3505 | have unresolved relocations for their debug sections. We need to apply | |
3506 | the relocations in order to get the locations of symbols correct. */ | |
3507 | ||
3508 | bfd_byte * | |
3509 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3510 | { | |
3511 | /* We're only interested in debugging sections with relocation | |
3512 | information. */ | |
3513 | if ((sectp->flags & SEC_RELOC) == 0) | |
3514 | return NULL; | |
3515 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3516 | return NULL; | |
3517 | ||
3518 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3519 | all sections begin at 0. */ | |
3520 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3521 | ||
97606a13 | 3522 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3523 | } |
c906108c SS |
3524 | |
3525 | void | |
fba45db2 | 3526 | _initialize_symfile (void) |
c906108c SS |
3527 | { |
3528 | struct cmd_list_element *c; | |
c5aa993b | 3529 | |
c906108c | 3530 | c = add_cmd ("symbol-file", class_files, symbol_file_command, |
c5aa993b | 3531 | "Load symbol table from executable file FILE.\n\ |
c906108c SS |
3532 | The `file' command can also load symbol tables, as well as setting the file\n\ |
3533 | to execute.", &cmdlist); | |
5ba2abeb | 3534 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3535 | |
3536 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, | |
db162d44 | 3537 | "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
c906108c | 3538 | Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
2acceee2 | 3539 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
3540 | The optional arguments are section-name section-address pairs and\n\ |
3541 | should be specified if the data and bss segments are not contiguous\n\ | |
d4654627 | 3542 | with the text. SECT is a section name to be loaded at SECT_ADDR.", |
c906108c | 3543 | &cmdlist); |
5ba2abeb | 3544 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3545 | |
3546 | c = add_cmd ("add-shared-symbol-files", class_files, | |
3547 | add_shared_symbol_files_command, | |
3548 | "Load the symbols from shared objects in the dynamic linker's link map.", | |
c5aa993b | 3549 | &cmdlist); |
c906108c SS |
3550 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
3551 | &cmdlist); | |
3552 | ||
3553 | c = add_cmd ("load", class_files, load_command, | |
c5aa993b | 3554 | "Dynamically load FILE into the running program, and record its symbols\n\ |
c906108c | 3555 | for access from GDB.", &cmdlist); |
5ba2abeb | 3556 | set_cmd_completer (c, filename_completer); |
c906108c SS |
3557 | |
3558 | add_show_from_set | |
3559 | (add_set_cmd ("symbol-reloading", class_support, var_boolean, | |
c5aa993b JM |
3560 | (char *) &symbol_reloading, |
3561 | "Set dynamic symbol table reloading multiple times in one run.", | |
c906108c SS |
3562 | &setlist), |
3563 | &showlist); | |
3564 | ||
c5aa993b JM |
3565 | add_prefix_cmd ("overlay", class_support, overlay_command, |
3566 | "Commands for debugging overlays.", &overlaylist, | |
c906108c SS |
3567 | "overlay ", 0, &cmdlist); |
3568 | ||
3569 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
3570 | add_com_alias ("ov", "overlay", class_alias, 1); | |
3571 | ||
c5aa993b | 3572 | add_cmd ("map-overlay", class_support, map_overlay_command, |
c906108c SS |
3573 | "Assert that an overlay section is mapped.", &overlaylist); |
3574 | ||
c5aa993b | 3575 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
c906108c SS |
3576 | "Assert that an overlay section is unmapped.", &overlaylist); |
3577 | ||
c5aa993b | 3578 | add_cmd ("list-overlays", class_support, list_overlays_command, |
c906108c SS |
3579 | "List mappings of overlay sections.", &overlaylist); |
3580 | ||
c5aa993b | 3581 | add_cmd ("manual", class_support, overlay_manual_command, |
c906108c | 3582 | "Enable overlay debugging.", &overlaylist); |
c5aa993b | 3583 | add_cmd ("off", class_support, overlay_off_command, |
c906108c | 3584 | "Disable overlay debugging.", &overlaylist); |
c5aa993b | 3585 | add_cmd ("auto", class_support, overlay_auto_command, |
c906108c | 3586 | "Enable automatic overlay debugging.", &overlaylist); |
c5aa993b | 3587 | add_cmd ("load-target", class_support, overlay_load_command, |
c906108c SS |
3588 | "Read the overlay mapping state from the target.", &overlaylist); |
3589 | ||
3590 | /* Filename extension to source language lookup table: */ | |
3591 | init_filename_language_table (); | |
3592 | c = add_set_cmd ("extension-language", class_files, var_string_noescape, | |
c5aa993b | 3593 | (char *) &ext_args, |
c906108c SS |
3594 | "Set mapping between filename extension and source language.\n\ |
3595 | Usage: set extension-language .foo bar", | |
c5aa993b | 3596 | &setlist); |
9f60d481 | 3597 | set_cmd_cfunc (c, set_ext_lang_command); |
c906108c | 3598 | |
c5aa993b | 3599 | add_info ("extensions", info_ext_lang_command, |
c906108c | 3600 | "All filename extensions associated with a source language."); |
917317f4 JM |
3601 | |
3602 | add_show_from_set | |
3603 | (add_set_cmd ("download-write-size", class_obscure, | |
3604 | var_integer, (char *) &download_write_size, | |
3605 | "Set the write size used when downloading a program.\n" | |
3606 | "Only used when downloading a program onto a remote\n" | |
3607 | "target. Specify zero, or a negative value, to disable\n" | |
3608 | "blocked writes. The actual size of each transfer is also\n" | |
3609 | "limited by the size of the target packet and the memory\n" | |
3610 | "cache.\n", | |
3611 | &setlist), | |
3612 | &showlist); | |
5b5d99cf JB |
3613 | |
3614 | debug_file_directory = xstrdup (DEBUGDIR); | |
3615 | c = (add_set_cmd | |
3616 | ("debug-file-directory", class_support, var_string, | |
3617 | (char *) &debug_file_directory, | |
3618 | "Set the directory where separate debug symbols are searched for.\n" | |
3619 | "Separate debug symbols are first searched for in the same\n" | |
5417f6dc | 3620 | "directory as the binary, then in the `" DEBUG_SUBDIRECTORY |
5b5d99cf JB |
3621 | "' subdirectory,\n" |
3622 | "and lastly at the path of the directory of the binary with\n" | |
3623 | "the global debug-file directory prepended\n", | |
3624 | &setlist)); | |
3625 | add_show_from_set (c, &showlist); | |
3626 | set_cmd_completer (c, filename_completer); | |
c906108c | 3627 | } |