Commit | Line | Data |
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c906108c | 1 | /* Generic symbol file reading for the GNU debugger, GDB. |
8926118c | 2 | |
6aba47ca | 3 | Copyright (C) 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, |
9b254dd1 | 4 | 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008 |
777ea8f1 | 5 | Free Software Foundation, Inc. |
8926118c | 6 | |
c906108c SS |
7 | Contributed by Cygnus Support, using pieces from other GDB modules. |
8 | ||
c5aa993b | 9 | This file is part of GDB. |
c906108c | 10 | |
c5aa993b JM |
11 | This program is free software; you can redistribute it and/or modify |
12 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 13 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 14 | (at your option) any later version. |
c906108c | 15 | |
c5aa993b JM |
16 | This program is distributed in the hope that it will be useful, |
17 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
18 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
19 | GNU General Public License for more details. | |
c906108c | 20 | |
c5aa993b | 21 | You should have received a copy of the GNU General Public License |
a9762ec7 | 22 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
23 | |
24 | #include "defs.h" | |
086df311 | 25 | #include "bfdlink.h" |
c906108c SS |
26 | #include "symtab.h" |
27 | #include "gdbtypes.h" | |
28 | #include "gdbcore.h" | |
29 | #include "frame.h" | |
30 | #include "target.h" | |
31 | #include "value.h" | |
32 | #include "symfile.h" | |
33 | #include "objfiles.h" | |
0378c332 | 34 | #include "source.h" |
c906108c SS |
35 | #include "gdbcmd.h" |
36 | #include "breakpoint.h" | |
37 | #include "language.h" | |
38 | #include "complaints.h" | |
39 | #include "demangle.h" | |
c5aa993b | 40 | #include "inferior.h" /* for write_pc */ |
5b5d99cf | 41 | #include "filenames.h" /* for DOSish file names */ |
c906108c | 42 | #include "gdb-stabs.h" |
04ea0df1 | 43 | #include "gdb_obstack.h" |
d75b5104 | 44 | #include "completer.h" |
af5f3db6 | 45 | #include "bcache.h" |
2de7ced7 | 46 | #include "hashtab.h" |
dbda9972 | 47 | #include "readline/readline.h" |
7e8580c1 | 48 | #include "gdb_assert.h" |
fe898f56 | 49 | #include "block.h" |
ea53e89f | 50 | #include "observer.h" |
c1bd25fd | 51 | #include "exec.h" |
9bdcbae7 | 52 | #include "parser-defs.h" |
8756216b | 53 | #include "varobj.h" |
77069918 | 54 | #include "elf-bfd.h" |
e85a822c | 55 | #include "solib.h" |
c906108c | 56 | |
c906108c SS |
57 | #include <sys/types.h> |
58 | #include <fcntl.h> | |
59 | #include "gdb_string.h" | |
60 | #include "gdb_stat.h" | |
61 | #include <ctype.h> | |
62 | #include <time.h> | |
2b71414d | 63 | #include <sys/time.h> |
c906108c | 64 | |
c906108c | 65 | |
9a4105ab AC |
66 | int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num); |
67 | void (*deprecated_show_load_progress) (const char *section, | |
5417f6dc RM |
68 | unsigned long section_sent, |
69 | unsigned long section_size, | |
70 | unsigned long total_sent, | |
c2d11a7d | 71 | unsigned long total_size); |
769d7dc4 AC |
72 | void (*deprecated_pre_add_symbol_hook) (const char *); |
73 | void (*deprecated_post_add_symbol_hook) (void); | |
c906108c | 74 | |
74b7792f AC |
75 | static void clear_symtab_users_cleanup (void *ignore); |
76 | ||
c906108c | 77 | /* Global variables owned by this file */ |
c5aa993b | 78 | int readnow_symbol_files; /* Read full symbols immediately */ |
c906108c | 79 | |
c906108c SS |
80 | /* External variables and functions referenced. */ |
81 | ||
a14ed312 | 82 | extern void report_transfer_performance (unsigned long, time_t, time_t); |
c906108c SS |
83 | |
84 | /* Functions this file defines */ | |
85 | ||
86 | #if 0 | |
a14ed312 KB |
87 | static int simple_read_overlay_region_table (void); |
88 | static void simple_free_overlay_region_table (void); | |
c906108c SS |
89 | #endif |
90 | ||
a14ed312 | 91 | static void load_command (char *, int); |
c906108c | 92 | |
d7db6da9 FN |
93 | static void symbol_file_add_main_1 (char *args, int from_tty, int flags); |
94 | ||
a14ed312 | 95 | static void add_symbol_file_command (char *, int); |
c906108c | 96 | |
a14ed312 | 97 | static void add_shared_symbol_files_command (char *, int); |
c906108c | 98 | |
5b5d99cf JB |
99 | static void reread_separate_symbols (struct objfile *objfile); |
100 | ||
a14ed312 | 101 | static void cashier_psymtab (struct partial_symtab *); |
c906108c | 102 | |
a14ed312 | 103 | bfd *symfile_bfd_open (char *); |
c906108c | 104 | |
0e931cf0 JB |
105 | int get_section_index (struct objfile *, char *); |
106 | ||
31d99776 | 107 | static struct sym_fns *find_sym_fns (bfd *); |
c906108c | 108 | |
a14ed312 | 109 | static void decrement_reading_symtab (void *); |
c906108c | 110 | |
a14ed312 | 111 | static void overlay_invalidate_all (void); |
c906108c | 112 | |
a14ed312 | 113 | static int overlay_is_mapped (struct obj_section *); |
c906108c | 114 | |
a14ed312 | 115 | void list_overlays_command (char *, int); |
c906108c | 116 | |
a14ed312 | 117 | void map_overlay_command (char *, int); |
c906108c | 118 | |
a14ed312 | 119 | void unmap_overlay_command (char *, int); |
c906108c | 120 | |
a14ed312 | 121 | static void overlay_auto_command (char *, int); |
c906108c | 122 | |
a14ed312 | 123 | static void overlay_manual_command (char *, int); |
c906108c | 124 | |
a14ed312 | 125 | static void overlay_off_command (char *, int); |
c906108c | 126 | |
a14ed312 | 127 | static void overlay_load_command (char *, int); |
c906108c | 128 | |
a14ed312 | 129 | static void overlay_command (char *, int); |
c906108c | 130 | |
a14ed312 | 131 | static void simple_free_overlay_table (void); |
c906108c | 132 | |
a14ed312 | 133 | static void read_target_long_array (CORE_ADDR, unsigned int *, int); |
c906108c | 134 | |
a14ed312 | 135 | static int simple_read_overlay_table (void); |
c906108c | 136 | |
a14ed312 | 137 | static int simple_overlay_update_1 (struct obj_section *); |
c906108c | 138 | |
a14ed312 | 139 | static void add_filename_language (char *ext, enum language lang); |
392a587b | 140 | |
a14ed312 | 141 | static void info_ext_lang_command (char *args, int from_tty); |
392a587b | 142 | |
5b5d99cf JB |
143 | static char *find_separate_debug_file (struct objfile *objfile); |
144 | ||
a14ed312 | 145 | static void init_filename_language_table (void); |
392a587b | 146 | |
31d99776 DJ |
147 | static void symfile_find_segment_sections (struct objfile *objfile); |
148 | ||
a14ed312 | 149 | void _initialize_symfile (void); |
c906108c SS |
150 | |
151 | /* List of all available sym_fns. On gdb startup, each object file reader | |
152 | calls add_symtab_fns() to register information on each format it is | |
153 | prepared to read. */ | |
154 | ||
155 | static struct sym_fns *symtab_fns = NULL; | |
156 | ||
157 | /* Flag for whether user will be reloading symbols multiple times. | |
158 | Defaults to ON for VxWorks, otherwise OFF. */ | |
159 | ||
160 | #ifdef SYMBOL_RELOADING_DEFAULT | |
161 | int symbol_reloading = SYMBOL_RELOADING_DEFAULT; | |
162 | #else | |
163 | int symbol_reloading = 0; | |
164 | #endif | |
920d2a44 AC |
165 | static void |
166 | show_symbol_reloading (struct ui_file *file, int from_tty, | |
167 | struct cmd_list_element *c, const char *value) | |
168 | { | |
169 | fprintf_filtered (file, _("\ | |
170 | Dynamic symbol table reloading multiple times in one run is %s.\n"), | |
171 | value); | |
172 | } | |
173 | ||
bf250677 DE |
174 | /* If non-zero, gdb will notify the user when it is loading symbols |
175 | from a file. This is almost always what users will want to have happen; | |
176 | but for programs with lots of dynamically linked libraries, the output | |
177 | can be more noise than signal. */ | |
178 | ||
179 | int print_symbol_loading = 1; | |
c906108c | 180 | |
b7209cb4 FF |
181 | /* If non-zero, shared library symbols will be added automatically |
182 | when the inferior is created, new libraries are loaded, or when | |
183 | attaching to the inferior. This is almost always what users will | |
184 | want to have happen; but for very large programs, the startup time | |
185 | will be excessive, and so if this is a problem, the user can clear | |
186 | this flag and then add the shared library symbols as needed. Note | |
187 | that there is a potential for confusion, since if the shared | |
c906108c | 188 | library symbols are not loaded, commands like "info fun" will *not* |
b7209cb4 | 189 | report all the functions that are actually present. */ |
c906108c SS |
190 | |
191 | int auto_solib_add = 1; | |
b7209cb4 FF |
192 | |
193 | /* For systems that support it, a threshold size in megabytes. If | |
194 | automatically adding a new library's symbol table to those already | |
195 | known to the debugger would cause the total shared library symbol | |
196 | size to exceed this threshhold, then the shlib's symbols are not | |
197 | added. The threshold is ignored if the user explicitly asks for a | |
198 | shlib to be added, such as when using the "sharedlibrary" | |
199 | command. */ | |
200 | ||
201 | int auto_solib_limit; | |
c906108c | 202 | \f |
c5aa993b | 203 | |
0fe19209 DC |
204 | /* This compares two partial symbols by names, using strcmp_iw_ordered |
205 | for the comparison. */ | |
c906108c SS |
206 | |
207 | static int | |
0cd64fe2 | 208 | compare_psymbols (const void *s1p, const void *s2p) |
c906108c | 209 | { |
0fe19209 DC |
210 | struct partial_symbol *const *s1 = s1p; |
211 | struct partial_symbol *const *s2 = s2p; | |
212 | ||
4725b721 PH |
213 | return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1), |
214 | SYMBOL_SEARCH_NAME (*s2)); | |
c906108c SS |
215 | } |
216 | ||
217 | void | |
fba45db2 | 218 | sort_pst_symbols (struct partial_symtab *pst) |
c906108c SS |
219 | { |
220 | /* Sort the global list; don't sort the static list */ | |
221 | ||
c5aa993b JM |
222 | qsort (pst->objfile->global_psymbols.list + pst->globals_offset, |
223 | pst->n_global_syms, sizeof (struct partial_symbol *), | |
c906108c SS |
224 | compare_psymbols); |
225 | } | |
226 | ||
c906108c SS |
227 | /* Make a null terminated copy of the string at PTR with SIZE characters in |
228 | the obstack pointed to by OBSTACKP . Returns the address of the copy. | |
229 | Note that the string at PTR does not have to be null terminated, I.E. it | |
230 | may be part of a larger string and we are only saving a substring. */ | |
231 | ||
232 | char * | |
63ca651f | 233 | obsavestring (const char *ptr, int size, struct obstack *obstackp) |
c906108c | 234 | { |
52f0bd74 | 235 | char *p = (char *) obstack_alloc (obstackp, size + 1); |
c906108c SS |
236 | /* Open-coded memcpy--saves function call time. These strings are usually |
237 | short. FIXME: Is this really still true with a compiler that can | |
238 | inline memcpy? */ | |
239 | { | |
aa1ee363 AC |
240 | const char *p1 = ptr; |
241 | char *p2 = p; | |
63ca651f | 242 | const char *end = ptr + size; |
c906108c SS |
243 | while (p1 != end) |
244 | *p2++ = *p1++; | |
245 | } | |
246 | p[size] = 0; | |
247 | return p; | |
248 | } | |
249 | ||
250 | /* Concatenate strings S1, S2 and S3; return the new string. Space is found | |
251 | in the obstack pointed to by OBSTACKP. */ | |
252 | ||
253 | char * | |
fba45db2 KB |
254 | obconcat (struct obstack *obstackp, const char *s1, const char *s2, |
255 | const char *s3) | |
c906108c | 256 | { |
52f0bd74 AC |
257 | int len = strlen (s1) + strlen (s2) + strlen (s3) + 1; |
258 | char *val = (char *) obstack_alloc (obstackp, len); | |
c906108c SS |
259 | strcpy (val, s1); |
260 | strcat (val, s2); | |
261 | strcat (val, s3); | |
262 | return val; | |
263 | } | |
264 | ||
265 | /* True if we are nested inside psymtab_to_symtab. */ | |
266 | ||
267 | int currently_reading_symtab = 0; | |
268 | ||
269 | static void | |
fba45db2 | 270 | decrement_reading_symtab (void *dummy) |
c906108c SS |
271 | { |
272 | currently_reading_symtab--; | |
273 | } | |
274 | ||
275 | /* Get the symbol table that corresponds to a partial_symtab. | |
276 | This is fast after the first time you do it. In fact, there | |
277 | is an even faster macro PSYMTAB_TO_SYMTAB that does the fast | |
278 | case inline. */ | |
279 | ||
280 | struct symtab * | |
aa1ee363 | 281 | psymtab_to_symtab (struct partial_symtab *pst) |
c906108c SS |
282 | { |
283 | /* If it's been looked up before, return it. */ | |
284 | if (pst->symtab) | |
285 | return pst->symtab; | |
286 | ||
287 | /* If it has not yet been read in, read it. */ | |
288 | if (!pst->readin) | |
c5aa993b | 289 | { |
c906108c SS |
290 | struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL); |
291 | currently_reading_symtab++; | |
292 | (*pst->read_symtab) (pst); | |
293 | do_cleanups (back_to); | |
294 | } | |
295 | ||
296 | return pst->symtab; | |
297 | } | |
298 | ||
5417f6dc RM |
299 | /* Remember the lowest-addressed loadable section we've seen. |
300 | This function is called via bfd_map_over_sections. | |
c906108c SS |
301 | |
302 | In case of equal vmas, the section with the largest size becomes the | |
303 | lowest-addressed loadable section. | |
304 | ||
305 | If the vmas and sizes are equal, the last section is considered the | |
306 | lowest-addressed loadable section. */ | |
307 | ||
308 | void | |
4efb68b1 | 309 | find_lowest_section (bfd *abfd, asection *sect, void *obj) |
c906108c | 310 | { |
c5aa993b | 311 | asection **lowest = (asection **) obj; |
c906108c SS |
312 | |
313 | if (0 == (bfd_get_section_flags (abfd, sect) & SEC_LOAD)) | |
314 | return; | |
315 | if (!*lowest) | |
316 | *lowest = sect; /* First loadable section */ | |
317 | else if (bfd_section_vma (abfd, *lowest) > bfd_section_vma (abfd, sect)) | |
318 | *lowest = sect; /* A lower loadable section */ | |
319 | else if (bfd_section_vma (abfd, *lowest) == bfd_section_vma (abfd, sect) | |
320 | && (bfd_section_size (abfd, (*lowest)) | |
321 | <= bfd_section_size (abfd, sect))) | |
322 | *lowest = sect; | |
323 | } | |
324 | ||
a39a16c4 MM |
325 | /* Create a new section_addr_info, with room for NUM_SECTIONS. */ |
326 | ||
327 | struct section_addr_info * | |
328 | alloc_section_addr_info (size_t num_sections) | |
329 | { | |
330 | struct section_addr_info *sap; | |
331 | size_t size; | |
332 | ||
333 | size = (sizeof (struct section_addr_info) | |
334 | + sizeof (struct other_sections) * (num_sections - 1)); | |
335 | sap = (struct section_addr_info *) xmalloc (size); | |
336 | memset (sap, 0, size); | |
337 | sap->num_sections = num_sections; | |
338 | ||
339 | return sap; | |
340 | } | |
62557bbc | 341 | |
7b90c3f9 JB |
342 | |
343 | /* Return a freshly allocated copy of ADDRS. The section names, if | |
344 | any, are also freshly allocated copies of those in ADDRS. */ | |
345 | struct section_addr_info * | |
346 | copy_section_addr_info (struct section_addr_info *addrs) | |
347 | { | |
348 | struct section_addr_info *copy | |
349 | = alloc_section_addr_info (addrs->num_sections); | |
350 | int i; | |
351 | ||
352 | copy->num_sections = addrs->num_sections; | |
353 | for (i = 0; i < addrs->num_sections; i++) | |
354 | { | |
355 | copy->other[i].addr = addrs->other[i].addr; | |
356 | if (addrs->other[i].name) | |
357 | copy->other[i].name = xstrdup (addrs->other[i].name); | |
358 | else | |
359 | copy->other[i].name = NULL; | |
360 | copy->other[i].sectindex = addrs->other[i].sectindex; | |
361 | } | |
362 | ||
363 | return copy; | |
364 | } | |
365 | ||
366 | ||
367 | ||
62557bbc KB |
368 | /* Build (allocate and populate) a section_addr_info struct from |
369 | an existing section table. */ | |
370 | ||
371 | extern struct section_addr_info * | |
372 | build_section_addr_info_from_section_table (const struct section_table *start, | |
373 | const struct section_table *end) | |
374 | { | |
375 | struct section_addr_info *sap; | |
376 | const struct section_table *stp; | |
377 | int oidx; | |
378 | ||
a39a16c4 | 379 | sap = alloc_section_addr_info (end - start); |
62557bbc KB |
380 | |
381 | for (stp = start, oidx = 0; stp != end; stp++) | |
382 | { | |
5417f6dc | 383 | if (bfd_get_section_flags (stp->bfd, |
fbd35540 | 384 | stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD) |
a39a16c4 | 385 | && oidx < end - start) |
62557bbc KB |
386 | { |
387 | sap->other[oidx].addr = stp->addr; | |
5417f6dc | 388 | sap->other[oidx].name |
fbd35540 | 389 | = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)); |
62557bbc KB |
390 | sap->other[oidx].sectindex = stp->the_bfd_section->index; |
391 | oidx++; | |
392 | } | |
393 | } | |
394 | ||
395 | return sap; | |
396 | } | |
397 | ||
398 | ||
399 | /* Free all memory allocated by build_section_addr_info_from_section_table. */ | |
400 | ||
401 | extern void | |
402 | free_section_addr_info (struct section_addr_info *sap) | |
403 | { | |
404 | int idx; | |
405 | ||
a39a16c4 | 406 | for (idx = 0; idx < sap->num_sections; idx++) |
62557bbc | 407 | if (sap->other[idx].name) |
b8c9b27d KB |
408 | xfree (sap->other[idx].name); |
409 | xfree (sap); | |
62557bbc KB |
410 | } |
411 | ||
412 | ||
e8289572 JB |
413 | /* Initialize OBJFILE's sect_index_* members. */ |
414 | static void | |
415 | init_objfile_sect_indices (struct objfile *objfile) | |
c906108c | 416 | { |
e8289572 | 417 | asection *sect; |
c906108c | 418 | int i; |
5417f6dc | 419 | |
b8fbeb18 | 420 | sect = bfd_get_section_by_name (objfile->obfd, ".text"); |
5417f6dc | 421 | if (sect) |
b8fbeb18 EZ |
422 | objfile->sect_index_text = sect->index; |
423 | ||
424 | sect = bfd_get_section_by_name (objfile->obfd, ".data"); | |
5417f6dc | 425 | if (sect) |
b8fbeb18 EZ |
426 | objfile->sect_index_data = sect->index; |
427 | ||
428 | sect = bfd_get_section_by_name (objfile->obfd, ".bss"); | |
5417f6dc | 429 | if (sect) |
b8fbeb18 EZ |
430 | objfile->sect_index_bss = sect->index; |
431 | ||
432 | sect = bfd_get_section_by_name (objfile->obfd, ".rodata"); | |
5417f6dc | 433 | if (sect) |
b8fbeb18 EZ |
434 | objfile->sect_index_rodata = sect->index; |
435 | ||
bbcd32ad FF |
436 | /* This is where things get really weird... We MUST have valid |
437 | indices for the various sect_index_* members or gdb will abort. | |
438 | So if for example, there is no ".text" section, we have to | |
31d99776 DJ |
439 | accomodate that. First, check for a file with the standard |
440 | one or two segments. */ | |
441 | ||
442 | symfile_find_segment_sections (objfile); | |
443 | ||
444 | /* Except when explicitly adding symbol files at some address, | |
445 | section_offsets contains nothing but zeros, so it doesn't matter | |
446 | which slot in section_offsets the individual sect_index_* members | |
447 | index into. So if they are all zero, it is safe to just point | |
448 | all the currently uninitialized indices to the first slot. But | |
449 | beware: if this is the main executable, it may be relocated | |
450 | later, e.g. by the remote qOffsets packet, and then this will | |
451 | be wrong! That's why we try segments first. */ | |
bbcd32ad FF |
452 | |
453 | for (i = 0; i < objfile->num_sections; i++) | |
454 | { | |
455 | if (ANOFFSET (objfile->section_offsets, i) != 0) | |
456 | { | |
457 | break; | |
458 | } | |
459 | } | |
460 | if (i == objfile->num_sections) | |
461 | { | |
462 | if (objfile->sect_index_text == -1) | |
463 | objfile->sect_index_text = 0; | |
464 | if (objfile->sect_index_data == -1) | |
465 | objfile->sect_index_data = 0; | |
466 | if (objfile->sect_index_bss == -1) | |
467 | objfile->sect_index_bss = 0; | |
468 | if (objfile->sect_index_rodata == -1) | |
469 | objfile->sect_index_rodata = 0; | |
470 | } | |
b8fbeb18 | 471 | } |
c906108c | 472 | |
c1bd25fd DJ |
473 | /* The arguments to place_section. */ |
474 | ||
475 | struct place_section_arg | |
476 | { | |
477 | struct section_offsets *offsets; | |
478 | CORE_ADDR lowest; | |
479 | }; | |
480 | ||
481 | /* Find a unique offset to use for loadable section SECT if | |
482 | the user did not provide an offset. */ | |
483 | ||
484 | void | |
485 | place_section (bfd *abfd, asection *sect, void *obj) | |
486 | { | |
487 | struct place_section_arg *arg = obj; | |
488 | CORE_ADDR *offsets = arg->offsets->offsets, start_addr; | |
489 | int done; | |
3bd72c6f | 490 | ULONGEST align = ((ULONGEST) 1) << bfd_get_section_alignment (abfd, sect); |
c1bd25fd | 491 | |
2711e456 DJ |
492 | /* We are only interested in allocated sections. */ |
493 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
494 | return; |
495 | ||
496 | /* If the user specified an offset, honor it. */ | |
497 | if (offsets[sect->index] != 0) | |
498 | return; | |
499 | ||
500 | /* Otherwise, let's try to find a place for the section. */ | |
3bd72c6f DJ |
501 | start_addr = (arg->lowest + align - 1) & -align; |
502 | ||
c1bd25fd DJ |
503 | do { |
504 | asection *cur_sec; | |
c1bd25fd | 505 | |
c1bd25fd DJ |
506 | done = 1; |
507 | ||
508 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
509 | { | |
510 | int indx = cur_sec->index; | |
511 | CORE_ADDR cur_offset; | |
512 | ||
513 | /* We don't need to compare against ourself. */ | |
514 | if (cur_sec == sect) | |
515 | continue; | |
516 | ||
2711e456 DJ |
517 | /* We can only conflict with allocated sections. */ |
518 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
c1bd25fd DJ |
519 | continue; |
520 | ||
521 | /* If the section offset is 0, either the section has not been placed | |
522 | yet, or it was the lowest section placed (in which case LOWEST | |
523 | will be past its end). */ | |
524 | if (offsets[indx] == 0) | |
525 | continue; | |
526 | ||
527 | /* If this section would overlap us, then we must move up. */ | |
528 | if (start_addr + bfd_get_section_size (sect) > offsets[indx] | |
529 | && start_addr < offsets[indx] + bfd_get_section_size (cur_sec)) | |
530 | { | |
531 | start_addr = offsets[indx] + bfd_get_section_size (cur_sec); | |
532 | start_addr = (start_addr + align - 1) & -align; | |
533 | done = 0; | |
3bd72c6f | 534 | break; |
c1bd25fd DJ |
535 | } |
536 | ||
537 | /* Otherwise, we appear to be OK. So far. */ | |
538 | } | |
539 | } | |
540 | while (!done); | |
541 | ||
542 | offsets[sect->index] = start_addr; | |
543 | arg->lowest = start_addr + bfd_get_section_size (sect); | |
c1bd25fd | 544 | } |
e8289572 JB |
545 | |
546 | /* Parse the user's idea of an offset for dynamic linking, into our idea | |
5417f6dc | 547 | of how to represent it for fast symbol reading. This is the default |
e8289572 JB |
548 | version of the sym_fns.sym_offsets function for symbol readers that |
549 | don't need to do anything special. It allocates a section_offsets table | |
550 | for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */ | |
551 | ||
552 | void | |
553 | default_symfile_offsets (struct objfile *objfile, | |
554 | struct section_addr_info *addrs) | |
555 | { | |
556 | int i; | |
557 | ||
a39a16c4 | 558 | objfile->num_sections = bfd_count_sections (objfile->obfd); |
e8289572 | 559 | objfile->section_offsets = (struct section_offsets *) |
5417f6dc | 560 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 561 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
5417f6dc | 562 | memset (objfile->section_offsets, 0, |
a39a16c4 | 563 | SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)); |
e8289572 JB |
564 | |
565 | /* Now calculate offsets for section that were specified by the | |
566 | caller. */ | |
a39a16c4 | 567 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
e8289572 JB |
568 | { |
569 | struct other_sections *osp ; | |
570 | ||
571 | osp = &addrs->other[i] ; | |
572 | if (osp->addr == 0) | |
573 | continue; | |
574 | ||
575 | /* Record all sections in offsets */ | |
576 | /* The section_offsets in the objfile are here filled in using | |
577 | the BFD index. */ | |
578 | (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr; | |
579 | } | |
580 | ||
c1bd25fd DJ |
581 | /* For relocatable files, all loadable sections will start at zero. |
582 | The zero is meaningless, so try to pick arbitrary addresses such | |
583 | that no loadable sections overlap. This algorithm is quadratic, | |
584 | but the number of sections in a single object file is generally | |
585 | small. */ | |
586 | if ((bfd_get_file_flags (objfile->obfd) & (EXEC_P | DYNAMIC)) == 0) | |
587 | { | |
588 | struct place_section_arg arg; | |
2711e456 DJ |
589 | bfd *abfd = objfile->obfd; |
590 | asection *cur_sec; | |
591 | CORE_ADDR lowest = 0; | |
592 | ||
593 | for (cur_sec = abfd->sections; cur_sec != NULL; cur_sec = cur_sec->next) | |
594 | /* We do not expect this to happen; just skip this step if the | |
595 | relocatable file has a section with an assigned VMA. */ | |
596 | if (bfd_section_vma (abfd, cur_sec) != 0) | |
597 | break; | |
598 | ||
599 | if (cur_sec == NULL) | |
600 | { | |
601 | CORE_ADDR *offsets = objfile->section_offsets->offsets; | |
602 | ||
603 | /* Pick non-overlapping offsets for sections the user did not | |
604 | place explicitly. */ | |
605 | arg.offsets = objfile->section_offsets; | |
606 | arg.lowest = 0; | |
607 | bfd_map_over_sections (objfile->obfd, place_section, &arg); | |
608 | ||
609 | /* Correctly filling in the section offsets is not quite | |
610 | enough. Relocatable files have two properties that | |
611 | (most) shared objects do not: | |
612 | ||
613 | - Their debug information will contain relocations. Some | |
614 | shared libraries do also, but many do not, so this can not | |
615 | be assumed. | |
616 | ||
617 | - If there are multiple code sections they will be loaded | |
618 | at different relative addresses in memory than they are | |
619 | in the objfile, since all sections in the file will start | |
620 | at address zero. | |
621 | ||
622 | Because GDB has very limited ability to map from an | |
623 | address in debug info to the correct code section, | |
624 | it relies on adding SECT_OFF_TEXT to things which might be | |
625 | code. If we clear all the section offsets, and set the | |
626 | section VMAs instead, then symfile_relocate_debug_section | |
627 | will return meaningful debug information pointing at the | |
628 | correct sections. | |
629 | ||
630 | GDB has too many different data structures for section | |
631 | addresses - a bfd, objfile, and so_list all have section | |
632 | tables, as does exec_ops. Some of these could probably | |
633 | be eliminated. */ | |
634 | ||
635 | for (cur_sec = abfd->sections; cur_sec != NULL; | |
636 | cur_sec = cur_sec->next) | |
637 | { | |
638 | if ((bfd_get_section_flags (abfd, cur_sec) & SEC_ALLOC) == 0) | |
639 | continue; | |
640 | ||
641 | bfd_set_section_vma (abfd, cur_sec, offsets[cur_sec->index]); | |
30510692 DJ |
642 | exec_set_section_address (bfd_get_filename (abfd), cur_sec->index, |
643 | offsets[cur_sec->index]); | |
2711e456 DJ |
644 | offsets[cur_sec->index] = 0; |
645 | } | |
646 | } | |
c1bd25fd DJ |
647 | } |
648 | ||
e8289572 JB |
649 | /* Remember the bfd indexes for the .text, .data, .bss and |
650 | .rodata sections. */ | |
651 | init_objfile_sect_indices (objfile); | |
652 | } | |
653 | ||
654 | ||
31d99776 DJ |
655 | /* Divide the file into segments, which are individual relocatable units. |
656 | This is the default version of the sym_fns.sym_segments function for | |
657 | symbol readers that do not have an explicit representation of segments. | |
658 | It assumes that object files do not have segments, and fully linked | |
659 | files have a single segment. */ | |
660 | ||
661 | struct symfile_segment_data * | |
662 | default_symfile_segments (bfd *abfd) | |
663 | { | |
664 | int num_sections, i; | |
665 | asection *sect; | |
666 | struct symfile_segment_data *data; | |
667 | CORE_ADDR low, high; | |
668 | ||
669 | /* Relocatable files contain enough information to position each | |
670 | loadable section independently; they should not be relocated | |
671 | in segments. */ | |
672 | if ((bfd_get_file_flags (abfd) & (EXEC_P | DYNAMIC)) == 0) | |
673 | return NULL; | |
674 | ||
675 | /* Make sure there is at least one loadable section in the file. */ | |
676 | for (sect = abfd->sections; sect != NULL; sect = sect->next) | |
677 | { | |
678 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
679 | continue; | |
680 | ||
681 | break; | |
682 | } | |
683 | if (sect == NULL) | |
684 | return NULL; | |
685 | ||
686 | low = bfd_get_section_vma (abfd, sect); | |
687 | high = low + bfd_get_section_size (sect); | |
688 | ||
689 | data = XZALLOC (struct symfile_segment_data); | |
690 | data->num_segments = 1; | |
691 | data->segment_bases = XCALLOC (1, CORE_ADDR); | |
692 | data->segment_sizes = XCALLOC (1, CORE_ADDR); | |
693 | ||
694 | num_sections = bfd_count_sections (abfd); | |
695 | data->segment_info = XCALLOC (num_sections, int); | |
696 | ||
697 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
698 | { | |
699 | CORE_ADDR vma; | |
700 | ||
701 | if ((bfd_get_section_flags (abfd, sect) & SEC_ALLOC) == 0) | |
702 | continue; | |
703 | ||
704 | vma = bfd_get_section_vma (abfd, sect); | |
705 | if (vma < low) | |
706 | low = vma; | |
707 | if (vma + bfd_get_section_size (sect) > high) | |
708 | high = vma + bfd_get_section_size (sect); | |
709 | ||
710 | data->segment_info[i] = 1; | |
711 | } | |
712 | ||
713 | data->segment_bases[0] = low; | |
714 | data->segment_sizes[0] = high - low; | |
715 | ||
716 | return data; | |
717 | } | |
718 | ||
c906108c SS |
719 | /* Process a symbol file, as either the main file or as a dynamically |
720 | loaded file. | |
721 | ||
96baa820 JM |
722 | OBJFILE is where the symbols are to be read from. |
723 | ||
7e8580c1 JB |
724 | ADDRS is the list of section load addresses. If the user has given |
725 | an 'add-symbol-file' command, then this is the list of offsets and | |
726 | addresses he or she provided as arguments to the command; or, if | |
727 | we're handling a shared library, these are the actual addresses the | |
728 | sections are loaded at, according to the inferior's dynamic linker | |
729 | (as gleaned by GDB's shared library code). We convert each address | |
730 | into an offset from the section VMA's as it appears in the object | |
731 | file, and then call the file's sym_offsets function to convert this | |
732 | into a format-specific offset table --- a `struct section_offsets'. | |
733 | If ADDRS is non-zero, OFFSETS must be zero. | |
734 | ||
735 | OFFSETS is a table of section offsets already in the right | |
736 | format-specific representation. NUM_OFFSETS is the number of | |
737 | elements present in OFFSETS->offsets. If OFFSETS is non-zero, we | |
738 | assume this is the proper table the call to sym_offsets described | |
739 | above would produce. Instead of calling sym_offsets, we just dump | |
740 | it right into objfile->section_offsets. (When we're re-reading | |
741 | symbols from an objfile, we don't have the original load address | |
742 | list any more; all we have is the section offset table.) If | |
743 | OFFSETS is non-zero, ADDRS must be zero. | |
96baa820 JM |
744 | |
745 | MAINLINE is nonzero if this is the main symbol file, or zero if | |
746 | it's an extra symbol file such as dynamically loaded code. | |
747 | ||
748 | VERBO is nonzero if the caller has printed a verbose message about | |
749 | the symbol reading (and complaints can be more terse about it). */ | |
c906108c SS |
750 | |
751 | void | |
7e8580c1 JB |
752 | syms_from_objfile (struct objfile *objfile, |
753 | struct section_addr_info *addrs, | |
754 | struct section_offsets *offsets, | |
755 | int num_offsets, | |
756 | int mainline, | |
757 | int verbo) | |
c906108c | 758 | { |
a39a16c4 | 759 | struct section_addr_info *local_addr = NULL; |
c906108c | 760 | struct cleanup *old_chain; |
2acceee2 | 761 | |
7e8580c1 | 762 | gdb_assert (! (addrs && offsets)); |
2acceee2 | 763 | |
c906108c | 764 | init_entry_point_info (objfile); |
31d99776 | 765 | objfile->sf = find_sym_fns (objfile->obfd); |
c906108c | 766 | |
75245b24 MS |
767 | if (objfile->sf == NULL) |
768 | return; /* No symbols. */ | |
769 | ||
c906108c SS |
770 | /* Make sure that partially constructed symbol tables will be cleaned up |
771 | if an error occurs during symbol reading. */ | |
74b7792f | 772 | old_chain = make_cleanup_free_objfile (objfile); |
c906108c | 773 | |
a39a16c4 MM |
774 | /* If ADDRS and OFFSETS are both NULL, put together a dummy address |
775 | list. We now establish the convention that an addr of zero means | |
776 | no load address was specified. */ | |
777 | if (! addrs && ! offsets) | |
778 | { | |
5417f6dc | 779 | local_addr |
a39a16c4 MM |
780 | = alloc_section_addr_info (bfd_count_sections (objfile->obfd)); |
781 | make_cleanup (xfree, local_addr); | |
782 | addrs = local_addr; | |
783 | } | |
784 | ||
785 | /* Now either addrs or offsets is non-zero. */ | |
786 | ||
c5aa993b | 787 | if (mainline) |
c906108c SS |
788 | { |
789 | /* We will modify the main symbol table, make sure that all its users | |
c5aa993b | 790 | will be cleaned up if an error occurs during symbol reading. */ |
74b7792f | 791 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c906108c SS |
792 | |
793 | /* Since no error yet, throw away the old symbol table. */ | |
794 | ||
795 | if (symfile_objfile != NULL) | |
796 | { | |
797 | free_objfile (symfile_objfile); | |
798 | symfile_objfile = NULL; | |
799 | } | |
800 | ||
801 | /* Currently we keep symbols from the add-symbol-file command. | |
c5aa993b JM |
802 | If the user wants to get rid of them, they should do "symbol-file" |
803 | without arguments first. Not sure this is the best behavior | |
804 | (PR 2207). */ | |
c906108c | 805 | |
c5aa993b | 806 | (*objfile->sf->sym_new_init) (objfile); |
c906108c SS |
807 | } |
808 | ||
809 | /* Convert addr into an offset rather than an absolute address. | |
810 | We find the lowest address of a loaded segment in the objfile, | |
53a5351d | 811 | and assume that <addr> is where that got loaded. |
c906108c | 812 | |
53a5351d JM |
813 | We no longer warn if the lowest section is not a text segment (as |
814 | happens for the PA64 port. */ | |
1549f619 | 815 | if (!mainline && addrs && addrs->other[0].name) |
c906108c | 816 | { |
1549f619 EZ |
817 | asection *lower_sect; |
818 | asection *sect; | |
819 | CORE_ADDR lower_offset; | |
820 | int i; | |
821 | ||
5417f6dc | 822 | /* Find lowest loadable section to be used as starting point for |
2acceee2 JM |
823 | continguous sections. FIXME!! won't work without call to find |
824 | .text first, but this assumes text is lowest section. */ | |
825 | lower_sect = bfd_get_section_by_name (objfile->obfd, ".text"); | |
826 | if (lower_sect == NULL) | |
c906108c | 827 | bfd_map_over_sections (objfile->obfd, find_lowest_section, |
4efb68b1 | 828 | &lower_sect); |
2acceee2 | 829 | if (lower_sect == NULL) |
ff8e85c3 PA |
830 | { |
831 | warning (_("no loadable sections found in added symbol-file %s"), | |
832 | objfile->name); | |
833 | lower_offset = 0; | |
834 | } | |
2acceee2 | 835 | else |
ff8e85c3 | 836 | lower_offset = bfd_section_vma (objfile->obfd, lower_sect); |
5417f6dc | 837 | |
13de58df | 838 | /* Calculate offsets for the loadable sections. |
2acceee2 JM |
839 | FIXME! Sections must be in order of increasing loadable section |
840 | so that contiguous sections can use the lower-offset!!! | |
5417f6dc | 841 | |
13de58df JB |
842 | Adjust offsets if the segments are not contiguous. |
843 | If the section is contiguous, its offset should be set to | |
2acceee2 JM |
844 | the offset of the highest loadable section lower than it |
845 | (the loadable section directly below it in memory). | |
846 | this_offset = lower_offset = lower_addr - lower_orig_addr */ | |
847 | ||
1549f619 | 848 | for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++) |
7e8580c1 JB |
849 | { |
850 | if (addrs->other[i].addr != 0) | |
851 | { | |
852 | sect = bfd_get_section_by_name (objfile->obfd, | |
853 | addrs->other[i].name); | |
854 | if (sect) | |
855 | { | |
856 | addrs->other[i].addr | |
857 | -= bfd_section_vma (objfile->obfd, sect); | |
858 | lower_offset = addrs->other[i].addr; | |
859 | /* This is the index used by BFD. */ | |
860 | addrs->other[i].sectindex = sect->index ; | |
861 | } | |
862 | else | |
863 | { | |
8a3fe4f8 | 864 | warning (_("section %s not found in %s"), |
5417f6dc | 865 | addrs->other[i].name, |
7e8580c1 JB |
866 | objfile->name); |
867 | addrs->other[i].addr = 0; | |
868 | } | |
869 | } | |
870 | else | |
871 | addrs->other[i].addr = lower_offset; | |
872 | } | |
c906108c SS |
873 | } |
874 | ||
875 | /* Initialize symbol reading routines for this objfile, allow complaints to | |
876 | appear for this new file, and record how verbose to be, then do the | |
877 | initial symbol reading for this file. */ | |
878 | ||
c5aa993b | 879 | (*objfile->sf->sym_init) (objfile); |
b9caf505 | 880 | clear_complaints (&symfile_complaints, 1, verbo); |
c906108c | 881 | |
7e8580c1 JB |
882 | if (addrs) |
883 | (*objfile->sf->sym_offsets) (objfile, addrs); | |
884 | else | |
885 | { | |
886 | size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets); | |
887 | ||
888 | /* Just copy in the offset table directly as given to us. */ | |
889 | objfile->num_sections = num_offsets; | |
890 | objfile->section_offsets | |
891 | = ((struct section_offsets *) | |
8b92e4d5 | 892 | obstack_alloc (&objfile->objfile_obstack, size)); |
7e8580c1 JB |
893 | memcpy (objfile->section_offsets, offsets, size); |
894 | ||
895 | init_objfile_sect_indices (objfile); | |
896 | } | |
c906108c | 897 | |
96baa820 | 898 | (*objfile->sf->sym_read) (objfile, mainline); |
c906108c | 899 | |
c906108c SS |
900 | /* Don't allow char * to have a typename (else would get caddr_t). |
901 | Ditto void *. FIXME: Check whether this is now done by all the | |
902 | symbol readers themselves (many of them now do), and if so remove | |
903 | it from here. */ | |
904 | ||
905 | TYPE_NAME (lookup_pointer_type (builtin_type_char)) = 0; | |
906 | TYPE_NAME (lookup_pointer_type (builtin_type_void)) = 0; | |
907 | ||
908 | /* Mark the objfile has having had initial symbol read attempted. Note | |
909 | that this does not mean we found any symbols... */ | |
910 | ||
c5aa993b | 911 | objfile->flags |= OBJF_SYMS; |
c906108c SS |
912 | |
913 | /* Discard cleanups as symbol reading was successful. */ | |
914 | ||
915 | discard_cleanups (old_chain); | |
c906108c SS |
916 | } |
917 | ||
918 | /* Perform required actions after either reading in the initial | |
919 | symbols for a new objfile, or mapping in the symbols from a reusable | |
920 | objfile. */ | |
c5aa993b | 921 | |
c906108c | 922 | void |
fba45db2 | 923 | new_symfile_objfile (struct objfile *objfile, int mainline, int verbo) |
c906108c SS |
924 | { |
925 | ||
926 | /* If this is the main symbol file we have to clean up all users of the | |
927 | old main symbol file. Otherwise it is sufficient to fixup all the | |
928 | breakpoints that may have been redefined by this symbol file. */ | |
929 | if (mainline) | |
930 | { | |
931 | /* OK, make it the "real" symbol file. */ | |
932 | symfile_objfile = objfile; | |
933 | ||
934 | clear_symtab_users (); | |
935 | } | |
936 | else | |
937 | { | |
938 | breakpoint_re_set (); | |
939 | } | |
940 | ||
941 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 942 | clear_complaints (&symfile_complaints, 0, verbo); |
c906108c SS |
943 | } |
944 | ||
945 | /* Process a symbol file, as either the main file or as a dynamically | |
946 | loaded file. | |
947 | ||
5417f6dc RM |
948 | ABFD is a BFD already open on the file, as from symfile_bfd_open. |
949 | This BFD will be closed on error, and is always consumed by this function. | |
7904e09f JB |
950 | |
951 | FROM_TTY says how verbose to be. | |
952 | ||
953 | MAINLINE specifies whether this is the main symbol file, or whether | |
954 | it's an extra symbol file such as dynamically loaded code. | |
955 | ||
956 | ADDRS, OFFSETS, and NUM_OFFSETS are as described for | |
957 | syms_from_objfile, above. ADDRS is ignored when MAINLINE is | |
958 | non-zero. | |
c906108c | 959 | |
c906108c SS |
960 | Upon success, returns a pointer to the objfile that was added. |
961 | Upon failure, jumps back to command level (never returns). */ | |
7904e09f | 962 | static struct objfile * |
5417f6dc | 963 | symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty, |
7904e09f JB |
964 | struct section_addr_info *addrs, |
965 | struct section_offsets *offsets, | |
966 | int num_offsets, | |
967 | int mainline, int flags) | |
c906108c SS |
968 | { |
969 | struct objfile *objfile; | |
970 | struct partial_symtab *psymtab; | |
77069918 | 971 | char *debugfile = NULL; |
7b90c3f9 | 972 | struct section_addr_info *orig_addrs = NULL; |
a39a16c4 | 973 | struct cleanup *my_cleanups; |
5417f6dc | 974 | const char *name = bfd_get_filename (abfd); |
c906108c | 975 | |
5417f6dc | 976 | my_cleanups = make_cleanup_bfd_close (abfd); |
c906108c | 977 | |
5417f6dc RM |
978 | /* Give user a chance to burp if we'd be |
979 | interactively wiping out any existing symbols. */ | |
c906108c SS |
980 | |
981 | if ((have_full_symbols () || have_partial_symbols ()) | |
982 | && mainline | |
983 | && from_tty | |
984 | && !query ("Load new symbol table from \"%s\"? ", name)) | |
8a3fe4f8 | 985 | error (_("Not confirmed.")); |
c906108c | 986 | |
2df3850c | 987 | objfile = allocate_objfile (abfd, flags); |
5417f6dc | 988 | discard_cleanups (my_cleanups); |
c906108c | 989 | |
a39a16c4 | 990 | if (addrs) |
63cd24fe | 991 | { |
7b90c3f9 JB |
992 | orig_addrs = copy_section_addr_info (addrs); |
993 | make_cleanup_free_section_addr_info (orig_addrs); | |
63cd24fe | 994 | } |
a39a16c4 | 995 | |
78a4a9b9 AC |
996 | /* We either created a new mapped symbol table, mapped an existing |
997 | symbol table file which has not had initial symbol reading | |
998 | performed, or need to read an unmapped symbol table. */ | |
999 | if (from_tty || info_verbose) | |
c906108c | 1000 | { |
769d7dc4 AC |
1001 | if (deprecated_pre_add_symbol_hook) |
1002 | deprecated_pre_add_symbol_hook (name); | |
78a4a9b9 | 1003 | else |
c906108c | 1004 | { |
bf250677 DE |
1005 | if (print_symbol_loading) |
1006 | { | |
1007 | printf_unfiltered (_("Reading symbols from %s..."), name); | |
1008 | wrap_here (""); | |
1009 | gdb_flush (gdb_stdout); | |
1010 | } | |
c906108c | 1011 | } |
c906108c | 1012 | } |
78a4a9b9 AC |
1013 | syms_from_objfile (objfile, addrs, offsets, num_offsets, |
1014 | mainline, from_tty); | |
c906108c SS |
1015 | |
1016 | /* We now have at least a partial symbol table. Check to see if the | |
1017 | user requested that all symbols be read on initial access via either | |
1018 | the gdb startup command line or on a per symbol file basis. Expand | |
1019 | all partial symbol tables for this objfile if so. */ | |
1020 | ||
2acceee2 | 1021 | if ((flags & OBJF_READNOW) || readnow_symbol_files) |
c906108c | 1022 | { |
bf250677 | 1023 | if ((from_tty || info_verbose) && print_symbol_loading) |
c906108c | 1024 | { |
a3f17187 | 1025 | printf_unfiltered (_("expanding to full symbols...")); |
c906108c SS |
1026 | wrap_here (""); |
1027 | gdb_flush (gdb_stdout); | |
1028 | } | |
1029 | ||
c5aa993b | 1030 | for (psymtab = objfile->psymtabs; |
c906108c | 1031 | psymtab != NULL; |
c5aa993b | 1032 | psymtab = psymtab->next) |
c906108c SS |
1033 | { |
1034 | psymtab_to_symtab (psymtab); | |
1035 | } | |
1036 | } | |
1037 | ||
77069918 JK |
1038 | /* If the file has its own symbol tables it has no separate debug info. |
1039 | `.dynsym'/`.symtab' go to MSYMBOLS, `.debug_info' goes to SYMTABS/PSYMTABS. | |
1040 | `.gnu_debuglink' may no longer be present with `.note.gnu.build-id'. */ | |
1041 | if (objfile->psymtabs == NULL) | |
1042 | debugfile = find_separate_debug_file (objfile); | |
5b5d99cf JB |
1043 | if (debugfile) |
1044 | { | |
5b5d99cf JB |
1045 | if (addrs != NULL) |
1046 | { | |
1047 | objfile->separate_debug_objfile | |
a39a16c4 | 1048 | = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags); |
5b5d99cf JB |
1049 | } |
1050 | else | |
1051 | { | |
1052 | objfile->separate_debug_objfile | |
1053 | = symbol_file_add (debugfile, from_tty, NULL, 0, flags); | |
1054 | } | |
1055 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
1056 | = objfile; | |
5417f6dc | 1057 | |
5b5d99cf JB |
1058 | /* Put the separate debug object before the normal one, this is so that |
1059 | usage of the ALL_OBJFILES_SAFE macro will stay safe. */ | |
1060 | put_objfile_before (objfile->separate_debug_objfile, objfile); | |
5417f6dc | 1061 | |
5b5d99cf JB |
1062 | xfree (debugfile); |
1063 | } | |
5417f6dc | 1064 | |
bf250677 DE |
1065 | if (!have_partial_symbols () && !have_full_symbols () |
1066 | && print_symbol_loading) | |
cb3c37b2 JB |
1067 | { |
1068 | wrap_here (""); | |
a3f17187 | 1069 | printf_filtered (_("(no debugging symbols found)")); |
8f5ba92b JG |
1070 | if (from_tty || info_verbose) |
1071 | printf_filtered ("..."); | |
1072 | else | |
1073 | printf_filtered ("\n"); | |
cb3c37b2 JB |
1074 | wrap_here (""); |
1075 | } | |
1076 | ||
c906108c SS |
1077 | if (from_tty || info_verbose) |
1078 | { | |
769d7dc4 AC |
1079 | if (deprecated_post_add_symbol_hook) |
1080 | deprecated_post_add_symbol_hook (); | |
c906108c | 1081 | else |
c5aa993b | 1082 | { |
bf250677 DE |
1083 | if (print_symbol_loading) |
1084 | printf_unfiltered (_("done.\n")); | |
c5aa993b | 1085 | } |
c906108c SS |
1086 | } |
1087 | ||
481d0f41 JB |
1088 | /* We print some messages regardless of whether 'from_tty || |
1089 | info_verbose' is true, so make sure they go out at the right | |
1090 | time. */ | |
1091 | gdb_flush (gdb_stdout); | |
1092 | ||
a39a16c4 MM |
1093 | do_cleanups (my_cleanups); |
1094 | ||
109f874e MS |
1095 | if (objfile->sf == NULL) |
1096 | return objfile; /* No symbols. */ | |
1097 | ||
c906108c SS |
1098 | new_symfile_objfile (objfile, mainline, from_tty); |
1099 | ||
06d3b283 | 1100 | observer_notify_new_objfile (objfile); |
c906108c | 1101 | |
ce7d4522 | 1102 | bfd_cache_close_all (); |
c906108c SS |
1103 | return (objfile); |
1104 | } | |
1105 | ||
7904e09f | 1106 | |
eb4556d7 JB |
1107 | /* Process the symbol file ABFD, as either the main file or as a |
1108 | dynamically loaded file. | |
1109 | ||
1110 | See symbol_file_add_with_addrs_or_offsets's comments for | |
1111 | details. */ | |
1112 | struct objfile * | |
1113 | symbol_file_add_from_bfd (bfd *abfd, int from_tty, | |
1114 | struct section_addr_info *addrs, | |
1115 | int mainline, int flags) | |
1116 | { | |
1117 | return symbol_file_add_with_addrs_or_offsets (abfd, | |
1118 | from_tty, addrs, 0, 0, | |
1119 | mainline, flags); | |
1120 | } | |
1121 | ||
1122 | ||
7904e09f JB |
1123 | /* Process a symbol file, as either the main file or as a dynamically |
1124 | loaded file. See symbol_file_add_with_addrs_or_offsets's comments | |
1125 | for details. */ | |
1126 | struct objfile * | |
1127 | symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs, | |
1128 | int mainline, int flags) | |
1129 | { | |
eb4556d7 JB |
1130 | return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty, |
1131 | addrs, mainline, flags); | |
7904e09f JB |
1132 | } |
1133 | ||
1134 | ||
d7db6da9 FN |
1135 | /* Call symbol_file_add() with default values and update whatever is |
1136 | affected by the loading of a new main(). | |
1137 | Used when the file is supplied in the gdb command line | |
1138 | and by some targets with special loading requirements. | |
1139 | The auxiliary function, symbol_file_add_main_1(), has the flags | |
1140 | argument for the switches that can only be specified in the symbol_file | |
1141 | command itself. */ | |
5417f6dc | 1142 | |
1adeb98a FN |
1143 | void |
1144 | symbol_file_add_main (char *args, int from_tty) | |
1145 | { | |
d7db6da9 FN |
1146 | symbol_file_add_main_1 (args, from_tty, 0); |
1147 | } | |
1148 | ||
1149 | static void | |
1150 | symbol_file_add_main_1 (char *args, int from_tty, int flags) | |
1151 | { | |
1152 | symbol_file_add (args, from_tty, NULL, 1, flags); | |
1153 | ||
d7db6da9 FN |
1154 | /* Getting new symbols may change our opinion about |
1155 | what is frameless. */ | |
1156 | reinit_frame_cache (); | |
1157 | ||
1158 | set_initial_language (); | |
1adeb98a FN |
1159 | } |
1160 | ||
1161 | void | |
1162 | symbol_file_clear (int from_tty) | |
1163 | { | |
1164 | if ((have_full_symbols () || have_partial_symbols ()) | |
1165 | && from_tty | |
0430b0d6 AS |
1166 | && (symfile_objfile |
1167 | ? !query (_("Discard symbol table from `%s'? "), | |
1168 | symfile_objfile->name) | |
1169 | : !query (_("Discard symbol table? ")))) | |
8a3fe4f8 | 1170 | error (_("Not confirmed.")); |
1adeb98a FN |
1171 | free_all_objfiles (); |
1172 | ||
1173 | /* solib descriptors may have handles to objfiles. Since their | |
1174 | storage has just been released, we'd better wipe the solib | |
1175 | descriptors as well. | |
1176 | */ | |
e85a822c | 1177 | no_shared_libraries (NULL, from_tty); |
1adeb98a FN |
1178 | |
1179 | symfile_objfile = NULL; | |
1180 | if (from_tty) | |
a3f17187 | 1181 | printf_unfiltered (_("No symbol file now.\n")); |
1adeb98a FN |
1182 | } |
1183 | ||
77069918 JK |
1184 | struct build_id |
1185 | { | |
1186 | size_t size; | |
1187 | gdb_byte data[1]; | |
1188 | }; | |
1189 | ||
1190 | /* Locate NT_GNU_BUILD_ID from ABFD and return its content. */ | |
1191 | ||
1192 | static struct build_id * | |
1193 | build_id_bfd_get (bfd *abfd) | |
1194 | { | |
1195 | struct build_id *retval; | |
1196 | ||
1197 | if (!bfd_check_format (abfd, bfd_object) | |
1198 | || bfd_get_flavour (abfd) != bfd_target_elf_flavour | |
1199 | || elf_tdata (abfd)->build_id == NULL) | |
1200 | return NULL; | |
1201 | ||
1202 | retval = xmalloc (sizeof *retval - 1 + elf_tdata (abfd)->build_id_size); | |
1203 | retval->size = elf_tdata (abfd)->build_id_size; | |
1204 | memcpy (retval->data, elf_tdata (abfd)->build_id, retval->size); | |
1205 | ||
1206 | return retval; | |
1207 | } | |
1208 | ||
1209 | /* Return if FILENAME has NT_GNU_BUILD_ID matching the CHECK value. */ | |
1210 | ||
1211 | static int | |
1212 | build_id_verify (const char *filename, struct build_id *check) | |
1213 | { | |
1214 | bfd *abfd; | |
1215 | struct build_id *found = NULL; | |
1216 | int retval = 0; | |
1217 | ||
1218 | /* We expect to be silent on the non-existing files. */ | |
1219 | abfd = bfd_openr (filename, gnutarget); | |
1220 | if (abfd == NULL) | |
1221 | return 0; | |
1222 | ||
1223 | found = build_id_bfd_get (abfd); | |
1224 | ||
1225 | if (found == NULL) | |
1226 | warning (_("File \"%s\" has no build-id, file skipped"), filename); | |
1227 | else if (found->size != check->size | |
1228 | || memcmp (found->data, check->data, found->size) != 0) | |
1229 | warning (_("File \"%s\" has a different build-id, file skipped"), filename); | |
1230 | else | |
1231 | retval = 1; | |
1232 | ||
1233 | if (!bfd_close (abfd)) | |
1234 | warning (_("cannot close \"%s\": %s"), filename, | |
1235 | bfd_errmsg (bfd_get_error ())); | |
1236 | return retval; | |
1237 | } | |
1238 | ||
1239 | static char * | |
1240 | build_id_to_debug_filename (struct build_id *build_id) | |
1241 | { | |
1242 | char *link, *s, *retval = NULL; | |
1243 | gdb_byte *data = build_id->data; | |
1244 | size_t size = build_id->size; | |
1245 | ||
1246 | /* DEBUG_FILE_DIRECTORY/.build-id/ab/cdef */ | |
1247 | link = xmalloc (strlen (debug_file_directory) + (sizeof "/.build-id/" - 1) + 1 | |
1248 | + 2 * size + (sizeof ".debug" - 1) + 1); | |
1249 | s = link + sprintf (link, "%s/.build-id/", debug_file_directory); | |
1250 | if (size > 0) | |
1251 | { | |
1252 | size--; | |
1253 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1254 | } | |
1255 | if (size > 0) | |
1256 | *s++ = '/'; | |
1257 | while (size-- > 0) | |
1258 | s += sprintf (s, "%02x", (unsigned) *data++); | |
1259 | strcpy (s, ".debug"); | |
1260 | ||
1261 | /* lrealpath() is expensive even for the usually non-existent files. */ | |
1262 | if (access (link, F_OK) == 0) | |
1263 | retval = lrealpath (link); | |
1264 | xfree (link); | |
1265 | ||
1266 | if (retval != NULL && !build_id_verify (retval, build_id)) | |
1267 | { | |
1268 | xfree (retval); | |
1269 | retval = NULL; | |
1270 | } | |
1271 | ||
1272 | return retval; | |
1273 | } | |
1274 | ||
5b5d99cf JB |
1275 | static char * |
1276 | get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out) | |
1277 | { | |
1278 | asection *sect; | |
1279 | bfd_size_type debuglink_size; | |
1280 | unsigned long crc32; | |
1281 | char *contents; | |
1282 | int crc_offset; | |
1283 | unsigned char *p; | |
5417f6dc | 1284 | |
5b5d99cf JB |
1285 | sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink"); |
1286 | ||
1287 | if (sect == NULL) | |
1288 | return NULL; | |
1289 | ||
1290 | debuglink_size = bfd_section_size (objfile->obfd, sect); | |
5417f6dc | 1291 | |
5b5d99cf JB |
1292 | contents = xmalloc (debuglink_size); |
1293 | bfd_get_section_contents (objfile->obfd, sect, contents, | |
1294 | (file_ptr)0, (bfd_size_type)debuglink_size); | |
1295 | ||
1296 | /* Crc value is stored after the filename, aligned up to 4 bytes. */ | |
1297 | crc_offset = strlen (contents) + 1; | |
1298 | crc_offset = (crc_offset + 3) & ~3; | |
1299 | ||
1300 | crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset)); | |
5417f6dc | 1301 | |
5b5d99cf JB |
1302 | *crc32_out = crc32; |
1303 | return contents; | |
1304 | } | |
1305 | ||
1306 | static int | |
1307 | separate_debug_file_exists (const char *name, unsigned long crc) | |
1308 | { | |
1309 | unsigned long file_crc = 0; | |
1310 | int fd; | |
777ea8f1 | 1311 | gdb_byte buffer[8*1024]; |
5b5d99cf JB |
1312 | int count; |
1313 | ||
1314 | fd = open (name, O_RDONLY | O_BINARY); | |
1315 | if (fd < 0) | |
1316 | return 0; | |
1317 | ||
1318 | while ((count = read (fd, buffer, sizeof (buffer))) > 0) | |
1319 | file_crc = gnu_debuglink_crc32 (file_crc, buffer, count); | |
1320 | ||
1321 | close (fd); | |
1322 | ||
1323 | return crc == file_crc; | |
1324 | } | |
1325 | ||
aa28a74e | 1326 | char *debug_file_directory = NULL; |
920d2a44 AC |
1327 | static void |
1328 | show_debug_file_directory (struct ui_file *file, int from_tty, | |
1329 | struct cmd_list_element *c, const char *value) | |
1330 | { | |
1331 | fprintf_filtered (file, _("\ | |
1332 | The directory where separate debug symbols are searched for is \"%s\".\n"), | |
1333 | value); | |
1334 | } | |
5b5d99cf JB |
1335 | |
1336 | #if ! defined (DEBUG_SUBDIRECTORY) | |
1337 | #define DEBUG_SUBDIRECTORY ".debug" | |
1338 | #endif | |
1339 | ||
1340 | static char * | |
1341 | find_separate_debug_file (struct objfile *objfile) | |
1342 | { | |
1343 | asection *sect; | |
1344 | char *basename; | |
1345 | char *dir; | |
1346 | char *debugfile; | |
1347 | char *name_copy; | |
aa28a74e | 1348 | char *canon_name; |
5b5d99cf JB |
1349 | bfd_size_type debuglink_size; |
1350 | unsigned long crc32; | |
1351 | int i; | |
77069918 JK |
1352 | struct build_id *build_id; |
1353 | ||
1354 | build_id = build_id_bfd_get (objfile->obfd); | |
1355 | if (build_id != NULL) | |
1356 | { | |
1357 | char *build_id_name; | |
1358 | ||
1359 | build_id_name = build_id_to_debug_filename (build_id); | |
1360 | free (build_id); | |
1361 | /* Prevent looping on a stripped .debug file. */ | |
1362 | if (build_id_name != NULL && strcmp (build_id_name, objfile->name) == 0) | |
1363 | { | |
1364 | warning (_("\"%s\": separate debug info file has no debug info"), | |
1365 | build_id_name); | |
1366 | xfree (build_id_name); | |
1367 | } | |
1368 | else if (build_id_name != NULL) | |
1369 | return build_id_name; | |
1370 | } | |
5b5d99cf JB |
1371 | |
1372 | basename = get_debug_link_info (objfile, &crc32); | |
1373 | ||
1374 | if (basename == NULL) | |
1375 | return NULL; | |
5417f6dc | 1376 | |
5b5d99cf JB |
1377 | dir = xstrdup (objfile->name); |
1378 | ||
fe36c4f4 JB |
1379 | /* Strip off the final filename part, leaving the directory name, |
1380 | followed by a slash. Objfile names should always be absolute and | |
1381 | tilde-expanded, so there should always be a slash in there | |
1382 | somewhere. */ | |
5b5d99cf JB |
1383 | for (i = strlen(dir) - 1; i >= 0; i--) |
1384 | { | |
1385 | if (IS_DIR_SEPARATOR (dir[i])) | |
1386 | break; | |
1387 | } | |
fe36c4f4 | 1388 | gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i])); |
5b5d99cf | 1389 | dir[i+1] = '\0'; |
5417f6dc | 1390 | |
5b5d99cf JB |
1391 | debugfile = alloca (strlen (debug_file_directory) + 1 |
1392 | + strlen (dir) | |
1393 | + strlen (DEBUG_SUBDIRECTORY) | |
1394 | + strlen ("/") | |
5417f6dc | 1395 | + strlen (basename) |
5b5d99cf JB |
1396 | + 1); |
1397 | ||
1398 | /* First try in the same directory as the original file. */ | |
1399 | strcpy (debugfile, dir); | |
1400 | strcat (debugfile, basename); | |
1401 | ||
1402 | if (separate_debug_file_exists (debugfile, crc32)) | |
1403 | { | |
1404 | xfree (basename); | |
1405 | xfree (dir); | |
1406 | return xstrdup (debugfile); | |
1407 | } | |
5417f6dc | 1408 | |
5b5d99cf JB |
1409 | /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */ |
1410 | strcpy (debugfile, dir); | |
1411 | strcat (debugfile, DEBUG_SUBDIRECTORY); | |
1412 | strcat (debugfile, "/"); | |
1413 | strcat (debugfile, basename); | |
1414 | ||
1415 | if (separate_debug_file_exists (debugfile, crc32)) | |
1416 | { | |
1417 | xfree (basename); | |
1418 | xfree (dir); | |
1419 | return xstrdup (debugfile); | |
1420 | } | |
5417f6dc | 1421 | |
5b5d99cf JB |
1422 | /* Then try in the global debugfile directory. */ |
1423 | strcpy (debugfile, debug_file_directory); | |
1424 | strcat (debugfile, "/"); | |
1425 | strcat (debugfile, dir); | |
5b5d99cf JB |
1426 | strcat (debugfile, basename); |
1427 | ||
1428 | if (separate_debug_file_exists (debugfile, crc32)) | |
1429 | { | |
1430 | xfree (basename); | |
1431 | xfree (dir); | |
1432 | return xstrdup (debugfile); | |
1433 | } | |
5417f6dc | 1434 | |
aa28a74e DJ |
1435 | /* If the file is in the sysroot, try using its base path in the |
1436 | global debugfile directory. */ | |
1437 | canon_name = lrealpath (dir); | |
1438 | if (canon_name | |
1439 | && strncmp (canon_name, gdb_sysroot, strlen (gdb_sysroot)) == 0 | |
1440 | && IS_DIR_SEPARATOR (canon_name[strlen (gdb_sysroot)])) | |
1441 | { | |
1442 | strcpy (debugfile, debug_file_directory); | |
1443 | strcat (debugfile, canon_name + strlen (gdb_sysroot)); | |
1444 | strcat (debugfile, "/"); | |
1445 | strcat (debugfile, basename); | |
1446 | ||
1447 | if (separate_debug_file_exists (debugfile, crc32)) | |
1448 | { | |
1449 | xfree (canon_name); | |
1450 | xfree (basename); | |
1451 | xfree (dir); | |
1452 | return xstrdup (debugfile); | |
1453 | } | |
1454 | } | |
1455 | ||
1456 | if (canon_name) | |
1457 | xfree (canon_name); | |
1458 | ||
5b5d99cf JB |
1459 | xfree (basename); |
1460 | xfree (dir); | |
1461 | return NULL; | |
1462 | } | |
1463 | ||
1464 | ||
c906108c SS |
1465 | /* This is the symbol-file command. Read the file, analyze its |
1466 | symbols, and add a struct symtab to a symtab list. The syntax of | |
cb2f3a29 MK |
1467 | the command is rather bizarre: |
1468 | ||
1469 | 1. The function buildargv implements various quoting conventions | |
1470 | which are undocumented and have little or nothing in common with | |
1471 | the way things are quoted (or not quoted) elsewhere in GDB. | |
1472 | ||
1473 | 2. Options are used, which are not generally used in GDB (perhaps | |
1474 | "set mapped on", "set readnow on" would be better) | |
1475 | ||
1476 | 3. The order of options matters, which is contrary to GNU | |
c906108c SS |
1477 | conventions (because it is confusing and inconvenient). */ |
1478 | ||
1479 | void | |
fba45db2 | 1480 | symbol_file_command (char *args, int from_tty) |
c906108c | 1481 | { |
c906108c SS |
1482 | dont_repeat (); |
1483 | ||
1484 | if (args == NULL) | |
1485 | { | |
1adeb98a | 1486 | symbol_file_clear (from_tty); |
c906108c SS |
1487 | } |
1488 | else | |
1489 | { | |
cb2f3a29 MK |
1490 | char **argv = buildargv (args); |
1491 | int flags = OBJF_USERLOADED; | |
1492 | struct cleanup *cleanups; | |
1493 | char *name = NULL; | |
1494 | ||
1495 | if (argv == NULL) | |
1496 | nomem (0); | |
1497 | ||
7a292a7a | 1498 | cleanups = make_cleanup_freeargv (argv); |
c906108c SS |
1499 | while (*argv != NULL) |
1500 | { | |
78a4a9b9 AC |
1501 | if (strcmp (*argv, "-readnow") == 0) |
1502 | flags |= OBJF_READNOW; | |
1503 | else if (**argv == '-') | |
8a3fe4f8 | 1504 | error (_("unknown option `%s'"), *argv); |
78a4a9b9 AC |
1505 | else |
1506 | { | |
cb2f3a29 | 1507 | symbol_file_add_main_1 (*argv, from_tty, flags); |
78a4a9b9 | 1508 | name = *argv; |
78a4a9b9 | 1509 | } |
cb2f3a29 | 1510 | |
c906108c SS |
1511 | argv++; |
1512 | } | |
1513 | ||
1514 | if (name == NULL) | |
cb2f3a29 MK |
1515 | error (_("no symbol file name was specified")); |
1516 | ||
c906108c SS |
1517 | do_cleanups (cleanups); |
1518 | } | |
1519 | } | |
1520 | ||
1521 | /* Set the initial language. | |
1522 | ||
cb2f3a29 MK |
1523 | FIXME: A better solution would be to record the language in the |
1524 | psymtab when reading partial symbols, and then use it (if known) to | |
1525 | set the language. This would be a win for formats that encode the | |
1526 | language in an easily discoverable place, such as DWARF. For | |
1527 | stabs, we can jump through hoops looking for specially named | |
1528 | symbols or try to intuit the language from the specific type of | |
1529 | stabs we find, but we can't do that until later when we read in | |
1530 | full symbols. */ | |
c906108c | 1531 | |
8b60591b | 1532 | void |
fba45db2 | 1533 | set_initial_language (void) |
c906108c SS |
1534 | { |
1535 | struct partial_symtab *pst; | |
c5aa993b | 1536 | enum language lang = language_unknown; |
c906108c SS |
1537 | |
1538 | pst = find_main_psymtab (); | |
1539 | if (pst != NULL) | |
1540 | { | |
c5aa993b | 1541 | if (pst->filename != NULL) |
cb2f3a29 MK |
1542 | lang = deduce_language_from_filename (pst->filename); |
1543 | ||
c906108c SS |
1544 | if (lang == language_unknown) |
1545 | { | |
c5aa993b JM |
1546 | /* Make C the default language */ |
1547 | lang = language_c; | |
c906108c | 1548 | } |
cb2f3a29 | 1549 | |
c906108c | 1550 | set_language (lang); |
cb2f3a29 | 1551 | expected_language = current_language; /* Don't warn the user. */ |
c906108c SS |
1552 | } |
1553 | } | |
1554 | ||
cb2f3a29 MK |
1555 | /* Open the file specified by NAME and hand it off to BFD for |
1556 | preliminary analysis. Return a newly initialized bfd *, which | |
1557 | includes a newly malloc'd` copy of NAME (tilde-expanded and made | |
1558 | absolute). In case of trouble, error() is called. */ | |
c906108c SS |
1559 | |
1560 | bfd * | |
fba45db2 | 1561 | symfile_bfd_open (char *name) |
c906108c SS |
1562 | { |
1563 | bfd *sym_bfd; | |
1564 | int desc; | |
1565 | char *absolute_name; | |
1566 | ||
cb2f3a29 | 1567 | name = tilde_expand (name); /* Returns 1st new malloc'd copy. */ |
c906108c SS |
1568 | |
1569 | /* Look down path for it, allocate 2nd new malloc'd copy. */ | |
cb2f3a29 MK |
1570 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, name, |
1571 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
608506ed | 1572 | #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__) |
c906108c SS |
1573 | if (desc < 0) |
1574 | { | |
1575 | char *exename = alloca (strlen (name) + 5); | |
1576 | strcat (strcpy (exename, name), ".exe"); | |
014d698b EZ |
1577 | desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
1578 | O_RDONLY | O_BINARY, 0, &absolute_name); | |
c906108c SS |
1579 | } |
1580 | #endif | |
1581 | if (desc < 0) | |
1582 | { | |
b8c9b27d | 1583 | make_cleanup (xfree, name); |
c906108c SS |
1584 | perror_with_name (name); |
1585 | } | |
cb2f3a29 MK |
1586 | |
1587 | /* Free 1st new malloc'd copy, but keep the 2nd malloc'd copy in | |
1588 | bfd. It'll be freed in free_objfile(). */ | |
1589 | xfree (name); | |
1590 | name = absolute_name; | |
c906108c | 1591 | |
9f76c2cd | 1592 | sym_bfd = bfd_fopen (name, gnutarget, FOPEN_RB, desc); |
c906108c SS |
1593 | if (!sym_bfd) |
1594 | { | |
1595 | close (desc); | |
b8c9b27d | 1596 | make_cleanup (xfree, name); |
8a3fe4f8 | 1597 | error (_("\"%s\": can't open to read symbols: %s."), name, |
c906108c SS |
1598 | bfd_errmsg (bfd_get_error ())); |
1599 | } | |
549c1eea | 1600 | bfd_set_cacheable (sym_bfd, 1); |
c906108c SS |
1601 | |
1602 | if (!bfd_check_format (sym_bfd, bfd_object)) | |
1603 | { | |
cb2f3a29 MK |
1604 | /* FIXME: should be checking for errors from bfd_close (for one |
1605 | thing, on error it does not free all the storage associated | |
1606 | with the bfd). */ | |
1607 | bfd_close (sym_bfd); /* This also closes desc. */ | |
b8c9b27d | 1608 | make_cleanup (xfree, name); |
8a3fe4f8 | 1609 | error (_("\"%s\": can't read symbols: %s."), name, |
c906108c SS |
1610 | bfd_errmsg (bfd_get_error ())); |
1611 | } | |
cb2f3a29 MK |
1612 | |
1613 | return sym_bfd; | |
c906108c SS |
1614 | } |
1615 | ||
cb2f3a29 MK |
1616 | /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if |
1617 | the section was not found. */ | |
1618 | ||
0e931cf0 JB |
1619 | int |
1620 | get_section_index (struct objfile *objfile, char *section_name) | |
1621 | { | |
1622 | asection *sect = bfd_get_section_by_name (objfile->obfd, section_name); | |
cb2f3a29 | 1623 | |
0e931cf0 JB |
1624 | if (sect) |
1625 | return sect->index; | |
1626 | else | |
1627 | return -1; | |
1628 | } | |
1629 | ||
cb2f3a29 MK |
1630 | /* Link SF into the global symtab_fns list. Called on startup by the |
1631 | _initialize routine in each object file format reader, to register | |
1632 | information about each format the the reader is prepared to | |
1633 | handle. */ | |
c906108c SS |
1634 | |
1635 | void | |
fba45db2 | 1636 | add_symtab_fns (struct sym_fns *sf) |
c906108c SS |
1637 | { |
1638 | sf->next = symtab_fns; | |
1639 | symtab_fns = sf; | |
1640 | } | |
1641 | ||
cb2f3a29 MK |
1642 | /* Initialize OBJFILE to read symbols from its associated BFD. It |
1643 | either returns or calls error(). The result is an initialized | |
1644 | struct sym_fns in the objfile structure, that contains cached | |
1645 | information about the symbol file. */ | |
c906108c | 1646 | |
31d99776 DJ |
1647 | static struct sym_fns * |
1648 | find_sym_fns (bfd *abfd) | |
c906108c SS |
1649 | { |
1650 | struct sym_fns *sf; | |
31d99776 | 1651 | enum bfd_flavour our_flavour = bfd_get_flavour (abfd); |
c906108c | 1652 | |
75245b24 MS |
1653 | if (our_flavour == bfd_target_srec_flavour |
1654 | || our_flavour == bfd_target_ihex_flavour | |
1655 | || our_flavour == bfd_target_tekhex_flavour) | |
31d99776 | 1656 | return NULL; /* No symbols. */ |
75245b24 | 1657 | |
c5aa993b | 1658 | for (sf = symtab_fns; sf != NULL; sf = sf->next) |
31d99776 DJ |
1659 | if (our_flavour == sf->sym_flavour) |
1660 | return sf; | |
cb2f3a29 | 1661 | |
8a3fe4f8 | 1662 | error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."), |
31d99776 | 1663 | bfd_get_target (abfd)); |
c906108c SS |
1664 | } |
1665 | \f | |
cb2f3a29 | 1666 | |
c906108c SS |
1667 | /* This function runs the load command of our current target. */ |
1668 | ||
1669 | static void | |
fba45db2 | 1670 | load_command (char *arg, int from_tty) |
c906108c | 1671 | { |
4487aabf PA |
1672 | /* The user might be reloading because the binary has changed. Take |
1673 | this opportunity to check. */ | |
1674 | reopen_exec_file (); | |
1675 | reread_symbols (); | |
1676 | ||
c906108c | 1677 | if (arg == NULL) |
1986bccd AS |
1678 | { |
1679 | char *parg; | |
1680 | int count = 0; | |
1681 | ||
1682 | parg = arg = get_exec_file (1); | |
1683 | ||
1684 | /* Count how many \ " ' tab space there are in the name. */ | |
1685 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1686 | { | |
1687 | parg++; | |
1688 | count++; | |
1689 | } | |
1690 | ||
1691 | if (count) | |
1692 | { | |
1693 | /* We need to quote this string so buildargv can pull it apart. */ | |
1694 | char *temp = xmalloc (strlen (arg) + count + 1 ); | |
1695 | char *ptemp = temp; | |
1696 | char *prev; | |
1697 | ||
1698 | make_cleanup (xfree, temp); | |
1699 | ||
1700 | prev = parg = arg; | |
1701 | while ((parg = strpbrk (parg, "\\\"'\t "))) | |
1702 | { | |
1703 | strncpy (ptemp, prev, parg - prev); | |
1704 | ptemp += parg - prev; | |
1705 | prev = parg++; | |
1706 | *ptemp++ = '\\'; | |
1707 | } | |
1708 | strcpy (ptemp, prev); | |
1709 | ||
1710 | arg = temp; | |
1711 | } | |
1712 | } | |
1713 | ||
c906108c | 1714 | target_load (arg, from_tty); |
2889e661 JB |
1715 | |
1716 | /* After re-loading the executable, we don't really know which | |
1717 | overlays are mapped any more. */ | |
1718 | overlay_cache_invalid = 1; | |
c906108c SS |
1719 | } |
1720 | ||
1721 | /* This version of "load" should be usable for any target. Currently | |
1722 | it is just used for remote targets, not inftarg.c or core files, | |
1723 | on the theory that only in that case is it useful. | |
1724 | ||
1725 | Avoiding xmodem and the like seems like a win (a) because we don't have | |
1726 | to worry about finding it, and (b) On VMS, fork() is very slow and so | |
1727 | we don't want to run a subprocess. On the other hand, I'm not sure how | |
1728 | performance compares. */ | |
917317f4 | 1729 | |
917317f4 JM |
1730 | static int validate_download = 0; |
1731 | ||
e4f9b4d5 MS |
1732 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1733 | ||
1734 | static void | |
1735 | add_section_size_callback (bfd *abfd, asection *asec, void *data) | |
1736 | { | |
1737 | bfd_size_type *sum = data; | |
1738 | ||
2c500098 | 1739 | *sum += bfd_get_section_size (asec); |
e4f9b4d5 MS |
1740 | } |
1741 | ||
1742 | /* Opaque data for load_section_callback. */ | |
1743 | struct load_section_data { | |
1744 | unsigned long load_offset; | |
a76d924d DJ |
1745 | struct load_progress_data *progress_data; |
1746 | VEC(memory_write_request_s) *requests; | |
1747 | }; | |
1748 | ||
1749 | /* Opaque data for load_progress. */ | |
1750 | struct load_progress_data { | |
1751 | /* Cumulative data. */ | |
e4f9b4d5 MS |
1752 | unsigned long write_count; |
1753 | unsigned long data_count; | |
1754 | bfd_size_type total_size; | |
a76d924d DJ |
1755 | }; |
1756 | ||
1757 | /* Opaque data for load_progress for a single section. */ | |
1758 | struct load_progress_section_data { | |
1759 | struct load_progress_data *cumulative; | |
cf7a04e8 | 1760 | |
a76d924d | 1761 | /* Per-section data. */ |
cf7a04e8 DJ |
1762 | const char *section_name; |
1763 | ULONGEST section_sent; | |
1764 | ULONGEST section_size; | |
1765 | CORE_ADDR lma; | |
1766 | gdb_byte *buffer; | |
e4f9b4d5 MS |
1767 | }; |
1768 | ||
a76d924d | 1769 | /* Target write callback routine for progress reporting. */ |
cf7a04e8 DJ |
1770 | |
1771 | static void | |
1772 | load_progress (ULONGEST bytes, void *untyped_arg) | |
1773 | { | |
a76d924d DJ |
1774 | struct load_progress_section_data *args = untyped_arg; |
1775 | struct load_progress_data *totals; | |
1776 | ||
1777 | if (args == NULL) | |
1778 | /* Writing padding data. No easy way to get at the cumulative | |
1779 | stats, so just ignore this. */ | |
1780 | return; | |
1781 | ||
1782 | totals = args->cumulative; | |
1783 | ||
1784 | if (bytes == 0 && args->section_sent == 0) | |
1785 | { | |
1786 | /* The write is just starting. Let the user know we've started | |
1787 | this section. */ | |
1788 | ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n", | |
1789 | args->section_name, paddr_nz (args->section_size), | |
1790 | paddr_nz (args->lma)); | |
1791 | return; | |
1792 | } | |
cf7a04e8 DJ |
1793 | |
1794 | if (validate_download) | |
1795 | { | |
1796 | /* Broken memories and broken monitors manifest themselves here | |
1797 | when bring new computers to life. This doubles already slow | |
1798 | downloads. */ | |
1799 | /* NOTE: cagney/1999-10-18: A more efficient implementation | |
1800 | might add a verify_memory() method to the target vector and | |
1801 | then use that. remote.c could implement that method using | |
1802 | the ``qCRC'' packet. */ | |
1803 | gdb_byte *check = xmalloc (bytes); | |
1804 | struct cleanup *verify_cleanups = make_cleanup (xfree, check); | |
1805 | ||
1806 | if (target_read_memory (args->lma, check, bytes) != 0) | |
1807 | error (_("Download verify read failed at 0x%s"), | |
1808 | paddr (args->lma)); | |
1809 | if (memcmp (args->buffer, check, bytes) != 0) | |
1810 | error (_("Download verify compare failed at 0x%s"), | |
1811 | paddr (args->lma)); | |
1812 | do_cleanups (verify_cleanups); | |
1813 | } | |
a76d924d | 1814 | totals->data_count += bytes; |
cf7a04e8 DJ |
1815 | args->lma += bytes; |
1816 | args->buffer += bytes; | |
a76d924d | 1817 | totals->write_count += 1; |
cf7a04e8 DJ |
1818 | args->section_sent += bytes; |
1819 | if (quit_flag | |
1820 | || (deprecated_ui_load_progress_hook != NULL | |
1821 | && deprecated_ui_load_progress_hook (args->section_name, | |
1822 | args->section_sent))) | |
1823 | error (_("Canceled the download")); | |
1824 | ||
1825 | if (deprecated_show_load_progress != NULL) | |
1826 | deprecated_show_load_progress (args->section_name, | |
1827 | args->section_sent, | |
1828 | args->section_size, | |
a76d924d DJ |
1829 | totals->data_count, |
1830 | totals->total_size); | |
cf7a04e8 DJ |
1831 | } |
1832 | ||
e4f9b4d5 MS |
1833 | /* Callback service function for generic_load (bfd_map_over_sections). */ |
1834 | ||
1835 | static void | |
1836 | load_section_callback (bfd *abfd, asection *asec, void *data) | |
1837 | { | |
a76d924d | 1838 | struct memory_write_request *new_request; |
e4f9b4d5 | 1839 | struct load_section_data *args = data; |
a76d924d | 1840 | struct load_progress_section_data *section_data; |
cf7a04e8 DJ |
1841 | bfd_size_type size = bfd_get_section_size (asec); |
1842 | gdb_byte *buffer; | |
cf7a04e8 | 1843 | const char *sect_name = bfd_get_section_name (abfd, asec); |
e4f9b4d5 | 1844 | |
cf7a04e8 DJ |
1845 | if ((bfd_get_section_flags (abfd, asec) & SEC_LOAD) == 0) |
1846 | return; | |
e4f9b4d5 | 1847 | |
cf7a04e8 DJ |
1848 | if (size == 0) |
1849 | return; | |
e4f9b4d5 | 1850 | |
a76d924d DJ |
1851 | new_request = VEC_safe_push (memory_write_request_s, |
1852 | args->requests, NULL); | |
1853 | memset (new_request, 0, sizeof (struct memory_write_request)); | |
1854 | section_data = xcalloc (1, sizeof (struct load_progress_section_data)); | |
1855 | new_request->begin = bfd_section_lma (abfd, asec) + args->load_offset; | |
1856 | new_request->end = new_request->begin + size; /* FIXME Should size be in instead? */ | |
1857 | new_request->data = xmalloc (size); | |
1858 | new_request->baton = section_data; | |
cf7a04e8 | 1859 | |
a76d924d | 1860 | buffer = new_request->data; |
cf7a04e8 | 1861 | |
a76d924d DJ |
1862 | section_data->cumulative = args->progress_data; |
1863 | section_data->section_name = sect_name; | |
1864 | section_data->section_size = size; | |
1865 | section_data->lma = new_request->begin; | |
1866 | section_data->buffer = buffer; | |
cf7a04e8 DJ |
1867 | |
1868 | bfd_get_section_contents (abfd, asec, buffer, 0, size); | |
a76d924d DJ |
1869 | } |
1870 | ||
1871 | /* Clean up an entire memory request vector, including load | |
1872 | data and progress records. */ | |
cf7a04e8 | 1873 | |
a76d924d DJ |
1874 | static void |
1875 | clear_memory_write_data (void *arg) | |
1876 | { | |
1877 | VEC(memory_write_request_s) **vec_p = arg; | |
1878 | VEC(memory_write_request_s) *vec = *vec_p; | |
1879 | int i; | |
1880 | struct memory_write_request *mr; | |
cf7a04e8 | 1881 | |
a76d924d DJ |
1882 | for (i = 0; VEC_iterate (memory_write_request_s, vec, i, mr); ++i) |
1883 | { | |
1884 | xfree (mr->data); | |
1885 | xfree (mr->baton); | |
1886 | } | |
1887 | VEC_free (memory_write_request_s, vec); | |
e4f9b4d5 MS |
1888 | } |
1889 | ||
c906108c | 1890 | void |
917317f4 | 1891 | generic_load (char *args, int from_tty) |
c906108c | 1892 | { |
c906108c | 1893 | bfd *loadfile_bfd; |
2b71414d | 1894 | struct timeval start_time, end_time; |
917317f4 | 1895 | char *filename; |
1986bccd | 1896 | struct cleanup *old_cleanups = make_cleanup (null_cleanup, 0); |
e4f9b4d5 | 1897 | struct load_section_data cbdata; |
a76d924d DJ |
1898 | struct load_progress_data total_progress; |
1899 | ||
e4f9b4d5 | 1900 | CORE_ADDR entry; |
1986bccd | 1901 | char **argv; |
e4f9b4d5 | 1902 | |
a76d924d DJ |
1903 | memset (&cbdata, 0, sizeof (cbdata)); |
1904 | memset (&total_progress, 0, sizeof (total_progress)); | |
1905 | cbdata.progress_data = &total_progress; | |
1906 | ||
1907 | make_cleanup (clear_memory_write_data, &cbdata.requests); | |
917317f4 | 1908 | |
1986bccd AS |
1909 | argv = buildargv (args); |
1910 | ||
1911 | if (argv == NULL) | |
1912 | nomem(0); | |
1913 | ||
1914 | make_cleanup_freeargv (argv); | |
1915 | ||
1916 | filename = tilde_expand (argv[0]); | |
1917 | make_cleanup (xfree, filename); | |
1918 | ||
1919 | if (argv[1] != NULL) | |
917317f4 JM |
1920 | { |
1921 | char *endptr; | |
ba5f2f8a | 1922 | |
1986bccd AS |
1923 | cbdata.load_offset = strtoul (argv[1], &endptr, 0); |
1924 | ||
1925 | /* If the last word was not a valid number then | |
1926 | treat it as a file name with spaces in. */ | |
1927 | if (argv[1] == endptr) | |
1928 | error (_("Invalid download offset:%s."), argv[1]); | |
1929 | ||
1930 | if (argv[2] != NULL) | |
1931 | error (_("Too many parameters.")); | |
917317f4 | 1932 | } |
c906108c | 1933 | |
917317f4 | 1934 | /* Open the file for loading. */ |
c906108c SS |
1935 | loadfile_bfd = bfd_openr (filename, gnutarget); |
1936 | if (loadfile_bfd == NULL) | |
1937 | { | |
1938 | perror_with_name (filename); | |
1939 | return; | |
1940 | } | |
917317f4 | 1941 | |
c906108c SS |
1942 | /* FIXME: should be checking for errors from bfd_close (for one thing, |
1943 | on error it does not free all the storage associated with the | |
1944 | bfd). */ | |
5c65bbb6 | 1945 | make_cleanup_bfd_close (loadfile_bfd); |
c906108c | 1946 | |
c5aa993b | 1947 | if (!bfd_check_format (loadfile_bfd, bfd_object)) |
c906108c | 1948 | { |
8a3fe4f8 | 1949 | error (_("\"%s\" is not an object file: %s"), filename, |
c906108c SS |
1950 | bfd_errmsg (bfd_get_error ())); |
1951 | } | |
c5aa993b | 1952 | |
5417f6dc | 1953 | bfd_map_over_sections (loadfile_bfd, add_section_size_callback, |
a76d924d DJ |
1954 | (void *) &total_progress.total_size); |
1955 | ||
1956 | bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata); | |
c2d11a7d | 1957 | |
2b71414d | 1958 | gettimeofday (&start_time, NULL); |
c906108c | 1959 | |
a76d924d DJ |
1960 | if (target_write_memory_blocks (cbdata.requests, flash_discard, |
1961 | load_progress) != 0) | |
1962 | error (_("Load failed")); | |
c906108c | 1963 | |
2b71414d | 1964 | gettimeofday (&end_time, NULL); |
ba5f2f8a | 1965 | |
e4f9b4d5 | 1966 | entry = bfd_get_start_address (loadfile_bfd); |
e4f9b4d5 MS |
1967 | ui_out_text (uiout, "Start address "); |
1968 | ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry)); | |
1969 | ui_out_text (uiout, ", load size "); | |
a76d924d | 1970 | ui_out_field_fmt (uiout, "load-size", "%lu", total_progress.data_count); |
e4f9b4d5 | 1971 | ui_out_text (uiout, "\n"); |
e4f9b4d5 MS |
1972 | /* We were doing this in remote-mips.c, I suspect it is right |
1973 | for other targets too. */ | |
1974 | write_pc (entry); | |
c906108c | 1975 | |
7ca9f392 AC |
1976 | /* FIXME: are we supposed to call symbol_file_add or not? According |
1977 | to a comment from remote-mips.c (where a call to symbol_file_add | |
1978 | was commented out), making the call confuses GDB if more than one | |
1979 | file is loaded in. Some targets do (e.g., remote-vx.c) but | |
b2fa5097 | 1980 | others don't (or didn't - perhaps they have all been deleted). */ |
c906108c | 1981 | |
a76d924d DJ |
1982 | print_transfer_performance (gdb_stdout, total_progress.data_count, |
1983 | total_progress.write_count, | |
1984 | &start_time, &end_time); | |
c906108c SS |
1985 | |
1986 | do_cleanups (old_cleanups); | |
1987 | } | |
1988 | ||
1989 | /* Report how fast the transfer went. */ | |
1990 | ||
917317f4 JM |
1991 | /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being |
1992 | replaced by print_transfer_performance (with a very different | |
1993 | function signature). */ | |
1994 | ||
c906108c | 1995 | void |
fba45db2 KB |
1996 | report_transfer_performance (unsigned long data_count, time_t start_time, |
1997 | time_t end_time) | |
c906108c | 1998 | { |
2b71414d DJ |
1999 | struct timeval start, end; |
2000 | ||
2001 | start.tv_sec = start_time; | |
2002 | start.tv_usec = 0; | |
2003 | end.tv_sec = end_time; | |
2004 | end.tv_usec = 0; | |
2005 | ||
2006 | print_transfer_performance (gdb_stdout, data_count, 0, &start, &end); | |
917317f4 JM |
2007 | } |
2008 | ||
2009 | void | |
d9fcf2fb | 2010 | print_transfer_performance (struct ui_file *stream, |
917317f4 JM |
2011 | unsigned long data_count, |
2012 | unsigned long write_count, | |
2b71414d DJ |
2013 | const struct timeval *start_time, |
2014 | const struct timeval *end_time) | |
917317f4 | 2015 | { |
9f43d28c | 2016 | ULONGEST time_count; |
2b71414d DJ |
2017 | |
2018 | /* Compute the elapsed time in milliseconds, as a tradeoff between | |
2019 | accuracy and overflow. */ | |
2020 | time_count = (end_time->tv_sec - start_time->tv_sec) * 1000; | |
2021 | time_count += (end_time->tv_usec - start_time->tv_usec) / 1000; | |
2022 | ||
8b93c638 JM |
2023 | ui_out_text (uiout, "Transfer rate: "); |
2024 | if (time_count > 0) | |
2025 | { | |
9f43d28c DJ |
2026 | unsigned long rate = ((ULONGEST) data_count * 1000) / time_count; |
2027 | ||
2028 | if (ui_out_is_mi_like_p (uiout)) | |
2029 | { | |
2030 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate * 8); | |
2031 | ui_out_text (uiout, " bits/sec"); | |
2032 | } | |
2033 | else if (rate < 1024) | |
2034 | { | |
2035 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate); | |
2036 | ui_out_text (uiout, " bytes/sec"); | |
2037 | } | |
2038 | else | |
2039 | { | |
2040 | ui_out_field_fmt (uiout, "transfer-rate", "%lu", rate / 1024); | |
2041 | ui_out_text (uiout, " KB/sec"); | |
2042 | } | |
8b93c638 JM |
2043 | } |
2044 | else | |
2045 | { | |
ba5f2f8a | 2046 | ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8)); |
5417f6dc | 2047 | ui_out_text (uiout, " bits in <1 sec"); |
8b93c638 JM |
2048 | } |
2049 | if (write_count > 0) | |
2050 | { | |
2051 | ui_out_text (uiout, ", "); | |
ba5f2f8a | 2052 | ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count); |
8b93c638 JM |
2053 | ui_out_text (uiout, " bytes/write"); |
2054 | } | |
2055 | ui_out_text (uiout, ".\n"); | |
c906108c SS |
2056 | } |
2057 | ||
2058 | /* This function allows the addition of incrementally linked object files. | |
2059 | It does not modify any state in the target, only in the debugger. */ | |
db162d44 EZ |
2060 | /* Note: ezannoni 2000-04-13 This function/command used to have a |
2061 | special case syntax for the rombug target (Rombug is the boot | |
2062 | monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the | |
2063 | rombug case, the user doesn't need to supply a text address, | |
2064 | instead a call to target_link() (in target.c) would supply the | |
2065 | value to use. We are now discontinuing this type of ad hoc syntax. */ | |
c906108c | 2066 | |
c906108c | 2067 | static void |
fba45db2 | 2068 | add_symbol_file_command (char *args, int from_tty) |
c906108c | 2069 | { |
db162d44 | 2070 | char *filename = NULL; |
2df3850c | 2071 | int flags = OBJF_USERLOADED; |
c906108c | 2072 | char *arg; |
2acceee2 | 2073 | int expecting_option = 0; |
db162d44 | 2074 | int section_index = 0; |
2acceee2 JM |
2075 | int argcnt = 0; |
2076 | int sec_num = 0; | |
2077 | int i; | |
db162d44 EZ |
2078 | int expecting_sec_name = 0; |
2079 | int expecting_sec_addr = 0; | |
5b96932b | 2080 | char **argv; |
db162d44 | 2081 | |
a39a16c4 | 2082 | struct sect_opt |
2acceee2 | 2083 | { |
2acceee2 JM |
2084 | char *name; |
2085 | char *value; | |
a39a16c4 | 2086 | }; |
db162d44 | 2087 | |
a39a16c4 MM |
2088 | struct section_addr_info *section_addrs; |
2089 | struct sect_opt *sect_opts = NULL; | |
2090 | size_t num_sect_opts = 0; | |
3017564a | 2091 | struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL); |
c5aa993b | 2092 | |
a39a16c4 | 2093 | num_sect_opts = 16; |
5417f6dc | 2094 | sect_opts = (struct sect_opt *) xmalloc (num_sect_opts |
a39a16c4 MM |
2095 | * sizeof (struct sect_opt)); |
2096 | ||
c906108c SS |
2097 | dont_repeat (); |
2098 | ||
2099 | if (args == NULL) | |
8a3fe4f8 | 2100 | error (_("add-symbol-file takes a file name and an address")); |
c906108c | 2101 | |
5b96932b AS |
2102 | argv = buildargv (args); |
2103 | make_cleanup_freeargv (argv); | |
db162d44 | 2104 | |
5b96932b AS |
2105 | if (argv == NULL) |
2106 | nomem (0); | |
db162d44 | 2107 | |
5b96932b AS |
2108 | for (arg = argv[0], argcnt = 0; arg != NULL; arg = argv[++argcnt]) |
2109 | { | |
2110 | /* Process the argument. */ | |
db162d44 | 2111 | if (argcnt == 0) |
c906108c | 2112 | { |
db162d44 EZ |
2113 | /* The first argument is the file name. */ |
2114 | filename = tilde_expand (arg); | |
3017564a | 2115 | make_cleanup (xfree, filename); |
c906108c | 2116 | } |
db162d44 | 2117 | else |
7a78ae4e ND |
2118 | if (argcnt == 1) |
2119 | { | |
2120 | /* The second argument is always the text address at which | |
2121 | to load the program. */ | |
2122 | sect_opts[section_index].name = ".text"; | |
2123 | sect_opts[section_index].value = arg; | |
f414f22f | 2124 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2125 | { |
2126 | num_sect_opts *= 2; | |
5417f6dc | 2127 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2128 | xrealloc (sect_opts, |
5417f6dc | 2129 | num_sect_opts |
a39a16c4 MM |
2130 | * sizeof (struct sect_opt))); |
2131 | } | |
7a78ae4e ND |
2132 | } |
2133 | else | |
2134 | { | |
2135 | /* It's an option (starting with '-') or it's an argument | |
2136 | to an option */ | |
2137 | ||
2138 | if (*arg == '-') | |
2139 | { | |
78a4a9b9 AC |
2140 | if (strcmp (arg, "-readnow") == 0) |
2141 | flags |= OBJF_READNOW; | |
2142 | else if (strcmp (arg, "-s") == 0) | |
2143 | { | |
2144 | expecting_sec_name = 1; | |
2145 | expecting_sec_addr = 1; | |
2146 | } | |
7a78ae4e ND |
2147 | } |
2148 | else | |
2149 | { | |
2150 | if (expecting_sec_name) | |
db162d44 | 2151 | { |
7a78ae4e ND |
2152 | sect_opts[section_index].name = arg; |
2153 | expecting_sec_name = 0; | |
db162d44 EZ |
2154 | } |
2155 | else | |
7a78ae4e ND |
2156 | if (expecting_sec_addr) |
2157 | { | |
2158 | sect_opts[section_index].value = arg; | |
2159 | expecting_sec_addr = 0; | |
f414f22f | 2160 | if (++section_index >= num_sect_opts) |
a39a16c4 MM |
2161 | { |
2162 | num_sect_opts *= 2; | |
5417f6dc | 2163 | sect_opts = ((struct sect_opt *) |
a39a16c4 | 2164 | xrealloc (sect_opts, |
5417f6dc | 2165 | num_sect_opts |
a39a16c4 MM |
2166 | * sizeof (struct sect_opt))); |
2167 | } | |
7a78ae4e ND |
2168 | } |
2169 | else | |
8a3fe4f8 | 2170 | error (_("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*")); |
7a78ae4e ND |
2171 | } |
2172 | } | |
c906108c | 2173 | } |
c906108c | 2174 | |
927890d0 JB |
2175 | /* This command takes at least two arguments. The first one is a |
2176 | filename, and the second is the address where this file has been | |
2177 | loaded. Abort now if this address hasn't been provided by the | |
2178 | user. */ | |
2179 | if (section_index < 1) | |
2180 | error (_("The address where %s has been loaded is missing"), filename); | |
2181 | ||
db162d44 EZ |
2182 | /* Print the prompt for the query below. And save the arguments into |
2183 | a sect_addr_info structure to be passed around to other | |
2184 | functions. We have to split this up into separate print | |
bb599908 | 2185 | statements because hex_string returns a local static |
db162d44 | 2186 | string. */ |
5417f6dc | 2187 | |
a3f17187 | 2188 | printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename); |
a39a16c4 MM |
2189 | section_addrs = alloc_section_addr_info (section_index); |
2190 | make_cleanup (xfree, section_addrs); | |
db162d44 | 2191 | for (i = 0; i < section_index; i++) |
c906108c | 2192 | { |
db162d44 EZ |
2193 | CORE_ADDR addr; |
2194 | char *val = sect_opts[i].value; | |
2195 | char *sec = sect_opts[i].name; | |
5417f6dc | 2196 | |
ae822768 | 2197 | addr = parse_and_eval_address (val); |
db162d44 | 2198 | |
db162d44 EZ |
2199 | /* Here we store the section offsets in the order they were |
2200 | entered on the command line. */ | |
a39a16c4 MM |
2201 | section_addrs->other[sec_num].name = sec; |
2202 | section_addrs->other[sec_num].addr = addr; | |
35076fa0 | 2203 | printf_unfiltered ("\t%s_addr = %s\n", sec, paddress (addr)); |
db162d44 EZ |
2204 | sec_num++; |
2205 | ||
5417f6dc | 2206 | /* The object's sections are initialized when a |
db162d44 | 2207 | call is made to build_objfile_section_table (objfile). |
5417f6dc | 2208 | This happens in reread_symbols. |
db162d44 EZ |
2209 | At this point, we don't know what file type this is, |
2210 | so we can't determine what section names are valid. */ | |
2acceee2 | 2211 | } |
db162d44 | 2212 | |
2acceee2 | 2213 | if (from_tty && (!query ("%s", ""))) |
8a3fe4f8 | 2214 | error (_("Not confirmed.")); |
c906108c | 2215 | |
a39a16c4 | 2216 | symbol_file_add (filename, from_tty, section_addrs, 0, flags); |
c906108c SS |
2217 | |
2218 | /* Getting new symbols may change our opinion about what is | |
2219 | frameless. */ | |
2220 | reinit_frame_cache (); | |
db162d44 | 2221 | do_cleanups (my_cleanups); |
c906108c SS |
2222 | } |
2223 | \f | |
2224 | static void | |
fba45db2 | 2225 | add_shared_symbol_files_command (char *args, int from_tty) |
c906108c SS |
2226 | { |
2227 | #ifdef ADD_SHARED_SYMBOL_FILES | |
2228 | ADD_SHARED_SYMBOL_FILES (args, from_tty); | |
2229 | #else | |
8a3fe4f8 | 2230 | error (_("This command is not available in this configuration of GDB.")); |
c5aa993b | 2231 | #endif |
c906108c SS |
2232 | } |
2233 | \f | |
2234 | /* Re-read symbols if a symbol-file has changed. */ | |
2235 | void | |
fba45db2 | 2236 | reread_symbols (void) |
c906108c SS |
2237 | { |
2238 | struct objfile *objfile; | |
2239 | long new_modtime; | |
2240 | int reread_one = 0; | |
2241 | struct stat new_statbuf; | |
2242 | int res; | |
2243 | ||
2244 | /* With the addition of shared libraries, this should be modified, | |
2245 | the load time should be saved in the partial symbol tables, since | |
2246 | different tables may come from different source files. FIXME. | |
2247 | This routine should then walk down each partial symbol table | |
2248 | and see if the symbol table that it originates from has been changed */ | |
2249 | ||
c5aa993b JM |
2250 | for (objfile = object_files; objfile; objfile = objfile->next) |
2251 | { | |
2252 | if (objfile->obfd) | |
2253 | { | |
52d16ba8 | 2254 | #ifdef DEPRECATED_IBM6000_TARGET |
c5aa993b JM |
2255 | /* If this object is from a shared library, then you should |
2256 | stat on the library name, not member name. */ | |
c906108c | 2257 | |
c5aa993b JM |
2258 | if (objfile->obfd->my_archive) |
2259 | res = stat (objfile->obfd->my_archive->filename, &new_statbuf); | |
2260 | else | |
c906108c | 2261 | #endif |
c5aa993b JM |
2262 | res = stat (objfile->name, &new_statbuf); |
2263 | if (res != 0) | |
c906108c | 2264 | { |
c5aa993b | 2265 | /* FIXME, should use print_sys_errmsg but it's not filtered. */ |
a3f17187 | 2266 | printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"), |
c5aa993b JM |
2267 | objfile->name); |
2268 | continue; | |
c906108c | 2269 | } |
c5aa993b JM |
2270 | new_modtime = new_statbuf.st_mtime; |
2271 | if (new_modtime != objfile->mtime) | |
c906108c | 2272 | { |
c5aa993b JM |
2273 | struct cleanup *old_cleanups; |
2274 | struct section_offsets *offsets; | |
2275 | int num_offsets; | |
c5aa993b JM |
2276 | char *obfd_filename; |
2277 | ||
a3f17187 | 2278 | printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"), |
c5aa993b JM |
2279 | objfile->name); |
2280 | ||
2281 | /* There are various functions like symbol_file_add, | |
2282 | symfile_bfd_open, syms_from_objfile, etc., which might | |
2283 | appear to do what we want. But they have various other | |
2284 | effects which we *don't* want. So we just do stuff | |
2285 | ourselves. We don't worry about mapped files (for one thing, | |
2286 | any mapped file will be out of date). */ | |
2287 | ||
2288 | /* If we get an error, blow away this objfile (not sure if | |
2289 | that is the correct response for things like shared | |
2290 | libraries). */ | |
74b7792f | 2291 | old_cleanups = make_cleanup_free_objfile (objfile); |
c5aa993b | 2292 | /* We need to do this whenever any symbols go away. */ |
74b7792f | 2293 | make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/); |
c5aa993b | 2294 | |
b2de52bb JK |
2295 | if (exec_bfd != NULL && strcmp (bfd_get_filename (objfile->obfd), |
2296 | bfd_get_filename (exec_bfd)) == 0) | |
2297 | { | |
2298 | /* Reload EXEC_BFD without asking anything. */ | |
2299 | ||
2300 | exec_file_attach (bfd_get_filename (objfile->obfd), 0); | |
2301 | } | |
2302 | ||
c5aa993b JM |
2303 | /* Clean up any state BFD has sitting around. We don't need |
2304 | to close the descriptor but BFD lacks a way of closing the | |
2305 | BFD without closing the descriptor. */ | |
2306 | obfd_filename = bfd_get_filename (objfile->obfd); | |
2307 | if (!bfd_close (objfile->obfd)) | |
8a3fe4f8 | 2308 | error (_("Can't close BFD for %s: %s"), objfile->name, |
c5aa993b JM |
2309 | bfd_errmsg (bfd_get_error ())); |
2310 | objfile->obfd = bfd_openr (obfd_filename, gnutarget); | |
2311 | if (objfile->obfd == NULL) | |
8a3fe4f8 | 2312 | error (_("Can't open %s to read symbols."), objfile->name); |
c5aa993b JM |
2313 | /* bfd_openr sets cacheable to true, which is what we want. */ |
2314 | if (!bfd_check_format (objfile->obfd, bfd_object)) | |
8a3fe4f8 | 2315 | error (_("Can't read symbols from %s: %s."), objfile->name, |
c5aa993b JM |
2316 | bfd_errmsg (bfd_get_error ())); |
2317 | ||
2318 | /* Save the offsets, we will nuke them with the rest of the | |
8b92e4d5 | 2319 | objfile_obstack. */ |
c5aa993b | 2320 | num_offsets = objfile->num_sections; |
5417f6dc | 2321 | offsets = ((struct section_offsets *) |
a39a16c4 | 2322 | alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))); |
5417f6dc | 2323 | memcpy (offsets, objfile->section_offsets, |
a39a16c4 | 2324 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b | 2325 | |
ae5a43e0 DJ |
2326 | /* Remove any references to this objfile in the global |
2327 | value lists. */ | |
2328 | preserve_values (objfile); | |
2329 | ||
c5aa993b JM |
2330 | /* Nuke all the state that we will re-read. Much of the following |
2331 | code which sets things to NULL really is necessary to tell | |
2332 | other parts of GDB that there is nothing currently there. */ | |
2333 | ||
2334 | /* FIXME: Do we have to free a whole linked list, or is this | |
2335 | enough? */ | |
2336 | if (objfile->global_psymbols.list) | |
2dc74dc1 | 2337 | xfree (objfile->global_psymbols.list); |
c5aa993b JM |
2338 | memset (&objfile->global_psymbols, 0, |
2339 | sizeof (objfile->global_psymbols)); | |
2340 | if (objfile->static_psymbols.list) | |
2dc74dc1 | 2341 | xfree (objfile->static_psymbols.list); |
c5aa993b JM |
2342 | memset (&objfile->static_psymbols, 0, |
2343 | sizeof (objfile->static_psymbols)); | |
2344 | ||
2345 | /* Free the obstacks for non-reusable objfiles */ | |
af5f3db6 AC |
2346 | bcache_xfree (objfile->psymbol_cache); |
2347 | objfile->psymbol_cache = bcache_xmalloc (); | |
2348 | bcache_xfree (objfile->macro_cache); | |
2349 | objfile->macro_cache = bcache_xmalloc (); | |
2de7ced7 DJ |
2350 | if (objfile->demangled_names_hash != NULL) |
2351 | { | |
2352 | htab_delete (objfile->demangled_names_hash); | |
2353 | objfile->demangled_names_hash = NULL; | |
2354 | } | |
b99607ea | 2355 | obstack_free (&objfile->objfile_obstack, 0); |
c5aa993b JM |
2356 | objfile->sections = NULL; |
2357 | objfile->symtabs = NULL; | |
2358 | objfile->psymtabs = NULL; | |
2359 | objfile->free_psymtabs = NULL; | |
a1b8c067 | 2360 | objfile->cp_namespace_symtab = NULL; |
c5aa993b | 2361 | objfile->msymbols = NULL; |
0a6ddd08 | 2362 | objfile->deprecated_sym_private = NULL; |
c5aa993b | 2363 | objfile->minimal_symbol_count = 0; |
0a83117a MS |
2364 | memset (&objfile->msymbol_hash, 0, |
2365 | sizeof (objfile->msymbol_hash)); | |
2366 | memset (&objfile->msymbol_demangled_hash, 0, | |
2367 | sizeof (objfile->msymbol_demangled_hash)); | |
7b097ae3 | 2368 | clear_objfile_data (objfile); |
c5aa993b JM |
2369 | if (objfile->sf != NULL) |
2370 | { | |
2371 | (*objfile->sf->sym_finish) (objfile); | |
2372 | } | |
2373 | ||
af5f3db6 AC |
2374 | objfile->psymbol_cache = bcache_xmalloc (); |
2375 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
2376 | /* obstack_init also initializes the obstack so it is |
2377 | empty. We could use obstack_specify_allocation but | |
2378 | gdb_obstack.h specifies the alloc/dealloc | |
2379 | functions. */ | |
2380 | obstack_init (&objfile->objfile_obstack); | |
c5aa993b JM |
2381 | if (build_objfile_section_table (objfile)) |
2382 | { | |
8a3fe4f8 | 2383 | error (_("Can't find the file sections in `%s': %s"), |
c5aa993b JM |
2384 | objfile->name, bfd_errmsg (bfd_get_error ())); |
2385 | } | |
15831452 | 2386 | terminate_minimal_symbol_table (objfile); |
c5aa993b JM |
2387 | |
2388 | /* We use the same section offsets as from last time. I'm not | |
2389 | sure whether that is always correct for shared libraries. */ | |
2390 | objfile->section_offsets = (struct section_offsets *) | |
5417f6dc | 2391 | obstack_alloc (&objfile->objfile_obstack, |
a39a16c4 | 2392 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
5417f6dc | 2393 | memcpy (objfile->section_offsets, offsets, |
a39a16c4 | 2394 | SIZEOF_N_SECTION_OFFSETS (num_offsets)); |
c5aa993b JM |
2395 | objfile->num_sections = num_offsets; |
2396 | ||
2397 | /* What the hell is sym_new_init for, anyway? The concept of | |
2398 | distinguishing between the main file and additional files | |
2399 | in this way seems rather dubious. */ | |
2400 | if (objfile == symfile_objfile) | |
2401 | { | |
2402 | (*objfile->sf->sym_new_init) (objfile); | |
c5aa993b JM |
2403 | } |
2404 | ||
2405 | (*objfile->sf->sym_init) (objfile); | |
b9caf505 | 2406 | clear_complaints (&symfile_complaints, 1, 1); |
c5aa993b JM |
2407 | /* The "mainline" parameter is a hideous hack; I think leaving it |
2408 | zero is OK since dbxread.c also does what it needs to do if | |
2409 | objfile->global_psymbols.size is 0. */ | |
96baa820 | 2410 | (*objfile->sf->sym_read) (objfile, 0); |
c5aa993b JM |
2411 | if (!have_partial_symbols () && !have_full_symbols ()) |
2412 | { | |
2413 | wrap_here (""); | |
a3f17187 | 2414 | printf_unfiltered (_("(no debugging symbols found)\n")); |
c5aa993b JM |
2415 | wrap_here (""); |
2416 | } | |
2417 | objfile->flags |= OBJF_SYMS; | |
2418 | ||
2419 | /* We're done reading the symbol file; finish off complaints. */ | |
b9caf505 | 2420 | clear_complaints (&symfile_complaints, 0, 1); |
c906108c | 2421 | |
c5aa993b JM |
2422 | /* Getting new symbols may change our opinion about what is |
2423 | frameless. */ | |
c906108c | 2424 | |
c5aa993b | 2425 | reinit_frame_cache (); |
c906108c | 2426 | |
c5aa993b JM |
2427 | /* Discard cleanups as symbol reading was successful. */ |
2428 | discard_cleanups (old_cleanups); | |
c906108c | 2429 | |
c5aa993b JM |
2430 | /* If the mtime has changed between the time we set new_modtime |
2431 | and now, we *want* this to be out of date, so don't call stat | |
2432 | again now. */ | |
2433 | objfile->mtime = new_modtime; | |
2434 | reread_one = 1; | |
5b5d99cf | 2435 | reread_separate_symbols (objfile); |
6528a9ea | 2436 | init_entry_point_info (objfile); |
c5aa993b | 2437 | } |
c906108c SS |
2438 | } |
2439 | } | |
c906108c SS |
2440 | |
2441 | if (reread_one) | |
ea53e89f JB |
2442 | { |
2443 | clear_symtab_users (); | |
2444 | /* At least one objfile has changed, so we can consider that | |
2445 | the executable we're debugging has changed too. */ | |
781b42b0 | 2446 | observer_notify_executable_changed (); |
ea53e89f JB |
2447 | } |
2448 | ||
c906108c | 2449 | } |
5b5d99cf JB |
2450 | |
2451 | ||
2452 | /* Handle separate debug info for OBJFILE, which has just been | |
2453 | re-read: | |
2454 | - If we had separate debug info before, but now we don't, get rid | |
2455 | of the separated objfile. | |
2456 | - If we didn't have separated debug info before, but now we do, | |
2457 | read in the new separated debug info file. | |
2458 | - If the debug link points to a different file, toss the old one | |
2459 | and read the new one. | |
2460 | This function does *not* handle the case where objfile is still | |
2461 | using the same separate debug info file, but that file's timestamp | |
2462 | has changed. That case should be handled by the loop in | |
2463 | reread_symbols already. */ | |
2464 | static void | |
2465 | reread_separate_symbols (struct objfile *objfile) | |
2466 | { | |
2467 | char *debug_file; | |
2468 | unsigned long crc32; | |
2469 | ||
2470 | /* Does the updated objfile's debug info live in a | |
2471 | separate file? */ | |
2472 | debug_file = find_separate_debug_file (objfile); | |
2473 | ||
2474 | if (objfile->separate_debug_objfile) | |
2475 | { | |
2476 | /* There are two cases where we need to get rid of | |
2477 | the old separated debug info objfile: | |
2478 | - if the new primary objfile doesn't have | |
2479 | separated debug info, or | |
2480 | - if the new primary objfile has separate debug | |
2481 | info, but it's under a different filename. | |
5417f6dc | 2482 | |
5b5d99cf JB |
2483 | If the old and new objfiles both have separate |
2484 | debug info, under the same filename, then we're | |
2485 | okay --- if the separated file's contents have | |
2486 | changed, we will have caught that when we | |
2487 | visited it in this function's outermost | |
2488 | loop. */ | |
2489 | if (! debug_file | |
2490 | || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0) | |
2491 | free_objfile (objfile->separate_debug_objfile); | |
2492 | } | |
2493 | ||
2494 | /* If the new objfile has separate debug info, and we | |
2495 | haven't loaded it already, do so now. */ | |
2496 | if (debug_file | |
2497 | && ! objfile->separate_debug_objfile) | |
2498 | { | |
2499 | /* Use the same section offset table as objfile itself. | |
2500 | Preserve the flags from objfile that make sense. */ | |
2501 | objfile->separate_debug_objfile | |
2502 | = (symbol_file_add_with_addrs_or_offsets | |
5417f6dc | 2503 | (symfile_bfd_open (debug_file), |
5b5d99cf JB |
2504 | info_verbose, /* from_tty: Don't override the default. */ |
2505 | 0, /* No addr table. */ | |
2506 | objfile->section_offsets, objfile->num_sections, | |
2507 | 0, /* Not mainline. See comments about this above. */ | |
78a4a9b9 | 2508 | objfile->flags & (OBJF_REORDERED | OBJF_SHARED | OBJF_READNOW |
5b5d99cf JB |
2509 | | OBJF_USERLOADED))); |
2510 | objfile->separate_debug_objfile->separate_debug_objfile_backlink | |
2511 | = objfile; | |
2512 | } | |
73780b3c MS |
2513 | if (debug_file) |
2514 | xfree (debug_file); | |
5b5d99cf JB |
2515 | } |
2516 | ||
2517 | ||
c906108c SS |
2518 | \f |
2519 | ||
c5aa993b JM |
2520 | |
2521 | typedef struct | |
2522 | { | |
2523 | char *ext; | |
c906108c | 2524 | enum language lang; |
c5aa993b JM |
2525 | } |
2526 | filename_language; | |
c906108c | 2527 | |
c5aa993b | 2528 | static filename_language *filename_language_table; |
c906108c SS |
2529 | static int fl_table_size, fl_table_next; |
2530 | ||
2531 | static void | |
fba45db2 | 2532 | add_filename_language (char *ext, enum language lang) |
c906108c SS |
2533 | { |
2534 | if (fl_table_next >= fl_table_size) | |
2535 | { | |
2536 | fl_table_size += 10; | |
5417f6dc | 2537 | filename_language_table = |
25bf3106 PM |
2538 | xrealloc (filename_language_table, |
2539 | fl_table_size * sizeof (*filename_language_table)); | |
c906108c SS |
2540 | } |
2541 | ||
4fcf66da | 2542 | filename_language_table[fl_table_next].ext = xstrdup (ext); |
c906108c SS |
2543 | filename_language_table[fl_table_next].lang = lang; |
2544 | fl_table_next++; | |
2545 | } | |
2546 | ||
2547 | static char *ext_args; | |
920d2a44 AC |
2548 | static void |
2549 | show_ext_args (struct ui_file *file, int from_tty, | |
2550 | struct cmd_list_element *c, const char *value) | |
2551 | { | |
2552 | fprintf_filtered (file, _("\ | |
2553 | Mapping between filename extension and source language is \"%s\".\n"), | |
2554 | value); | |
2555 | } | |
c906108c SS |
2556 | |
2557 | static void | |
26c41df3 | 2558 | set_ext_lang_command (char *args, int from_tty, struct cmd_list_element *e) |
c906108c SS |
2559 | { |
2560 | int i; | |
2561 | char *cp = ext_args; | |
2562 | enum language lang; | |
2563 | ||
2564 | /* First arg is filename extension, starting with '.' */ | |
2565 | if (*cp != '.') | |
8a3fe4f8 | 2566 | error (_("'%s': Filename extension must begin with '.'"), ext_args); |
c906108c SS |
2567 | |
2568 | /* Find end of first arg. */ | |
c5aa993b | 2569 | while (*cp && !isspace (*cp)) |
c906108c SS |
2570 | cp++; |
2571 | ||
2572 | if (*cp == '\0') | |
8a3fe4f8 | 2573 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2574 | ext_args); |
2575 | ||
2576 | /* Null-terminate first arg */ | |
c5aa993b | 2577 | *cp++ = '\0'; |
c906108c SS |
2578 | |
2579 | /* Find beginning of second arg, which should be a source language. */ | |
2580 | while (*cp && isspace (*cp)) | |
2581 | cp++; | |
2582 | ||
2583 | if (*cp == '\0') | |
8a3fe4f8 | 2584 | error (_("'%s': two arguments required -- filename extension and language"), |
c906108c SS |
2585 | ext_args); |
2586 | ||
2587 | /* Lookup the language from among those we know. */ | |
2588 | lang = language_enum (cp); | |
2589 | ||
2590 | /* Now lookup the filename extension: do we already know it? */ | |
2591 | for (i = 0; i < fl_table_next; i++) | |
2592 | if (0 == strcmp (ext_args, filename_language_table[i].ext)) | |
2593 | break; | |
2594 | ||
2595 | if (i >= fl_table_next) | |
2596 | { | |
2597 | /* new file extension */ | |
2598 | add_filename_language (ext_args, lang); | |
2599 | } | |
2600 | else | |
2601 | { | |
2602 | /* redefining a previously known filename extension */ | |
2603 | ||
2604 | /* if (from_tty) */ | |
2605 | /* query ("Really make files of type %s '%s'?", */ | |
2606 | /* ext_args, language_str (lang)); */ | |
2607 | ||
b8c9b27d | 2608 | xfree (filename_language_table[i].ext); |
4fcf66da | 2609 | filename_language_table[i].ext = xstrdup (ext_args); |
c906108c SS |
2610 | filename_language_table[i].lang = lang; |
2611 | } | |
2612 | } | |
2613 | ||
2614 | static void | |
fba45db2 | 2615 | info_ext_lang_command (char *args, int from_tty) |
c906108c SS |
2616 | { |
2617 | int i; | |
2618 | ||
a3f17187 | 2619 | printf_filtered (_("Filename extensions and the languages they represent:")); |
c906108c SS |
2620 | printf_filtered ("\n\n"); |
2621 | for (i = 0; i < fl_table_next; i++) | |
c5aa993b JM |
2622 | printf_filtered ("\t%s\t- %s\n", |
2623 | filename_language_table[i].ext, | |
c906108c SS |
2624 | language_str (filename_language_table[i].lang)); |
2625 | } | |
2626 | ||
2627 | static void | |
fba45db2 | 2628 | init_filename_language_table (void) |
c906108c SS |
2629 | { |
2630 | if (fl_table_size == 0) /* protect against repetition */ | |
2631 | { | |
2632 | fl_table_size = 20; | |
2633 | fl_table_next = 0; | |
c5aa993b | 2634 | filename_language_table = |
c906108c | 2635 | xmalloc (fl_table_size * sizeof (*filename_language_table)); |
c5aa993b JM |
2636 | add_filename_language (".c", language_c); |
2637 | add_filename_language (".C", language_cplus); | |
2638 | add_filename_language (".cc", language_cplus); | |
2639 | add_filename_language (".cp", language_cplus); | |
2640 | add_filename_language (".cpp", language_cplus); | |
2641 | add_filename_language (".cxx", language_cplus); | |
2642 | add_filename_language (".c++", language_cplus); | |
2643 | add_filename_language (".java", language_java); | |
c906108c | 2644 | add_filename_language (".class", language_java); |
da2cf7e0 | 2645 | add_filename_language (".m", language_objc); |
c5aa993b JM |
2646 | add_filename_language (".f", language_fortran); |
2647 | add_filename_language (".F", language_fortran); | |
2648 | add_filename_language (".s", language_asm); | |
aa707ed0 | 2649 | add_filename_language (".sx", language_asm); |
c5aa993b | 2650 | add_filename_language (".S", language_asm); |
c6fd39cd PM |
2651 | add_filename_language (".pas", language_pascal); |
2652 | add_filename_language (".p", language_pascal); | |
2653 | add_filename_language (".pp", language_pascal); | |
963a6417 PH |
2654 | add_filename_language (".adb", language_ada); |
2655 | add_filename_language (".ads", language_ada); | |
2656 | add_filename_language (".a", language_ada); | |
2657 | add_filename_language (".ada", language_ada); | |
c906108c SS |
2658 | } |
2659 | } | |
2660 | ||
2661 | enum language | |
fba45db2 | 2662 | deduce_language_from_filename (char *filename) |
c906108c SS |
2663 | { |
2664 | int i; | |
2665 | char *cp; | |
2666 | ||
2667 | if (filename != NULL) | |
2668 | if ((cp = strrchr (filename, '.')) != NULL) | |
2669 | for (i = 0; i < fl_table_next; i++) | |
2670 | if (strcmp (cp, filename_language_table[i].ext) == 0) | |
2671 | return filename_language_table[i].lang; | |
2672 | ||
2673 | return language_unknown; | |
2674 | } | |
2675 | \f | |
2676 | /* allocate_symtab: | |
2677 | ||
2678 | Allocate and partly initialize a new symbol table. Return a pointer | |
2679 | to it. error() if no space. | |
2680 | ||
2681 | Caller must set these fields: | |
c5aa993b JM |
2682 | LINETABLE(symtab) |
2683 | symtab->blockvector | |
2684 | symtab->dirname | |
2685 | symtab->free_code | |
2686 | symtab->free_ptr | |
2687 | possibly free_named_symtabs (symtab->filename); | |
c906108c SS |
2688 | */ |
2689 | ||
2690 | struct symtab * | |
fba45db2 | 2691 | allocate_symtab (char *filename, struct objfile *objfile) |
c906108c | 2692 | { |
52f0bd74 | 2693 | struct symtab *symtab; |
c906108c SS |
2694 | |
2695 | symtab = (struct symtab *) | |
4a146b47 | 2696 | obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab)); |
c906108c | 2697 | memset (symtab, 0, sizeof (*symtab)); |
c5aa993b | 2698 | symtab->filename = obsavestring (filename, strlen (filename), |
4a146b47 | 2699 | &objfile->objfile_obstack); |
c5aa993b JM |
2700 | symtab->fullname = NULL; |
2701 | symtab->language = deduce_language_from_filename (filename); | |
2702 | symtab->debugformat = obsavestring ("unknown", 7, | |
4a146b47 | 2703 | &objfile->objfile_obstack); |
c906108c SS |
2704 | |
2705 | /* Hook it to the objfile it comes from */ | |
2706 | ||
c5aa993b JM |
2707 | symtab->objfile = objfile; |
2708 | symtab->next = objfile->symtabs; | |
2709 | objfile->symtabs = symtab; | |
c906108c | 2710 | |
c906108c SS |
2711 | return (symtab); |
2712 | } | |
2713 | ||
2714 | struct partial_symtab * | |
fba45db2 | 2715 | allocate_psymtab (char *filename, struct objfile *objfile) |
c906108c SS |
2716 | { |
2717 | struct partial_symtab *psymtab; | |
2718 | ||
c5aa993b | 2719 | if (objfile->free_psymtabs) |
c906108c | 2720 | { |
c5aa993b JM |
2721 | psymtab = objfile->free_psymtabs; |
2722 | objfile->free_psymtabs = psymtab->next; | |
c906108c SS |
2723 | } |
2724 | else | |
2725 | psymtab = (struct partial_symtab *) | |
8b92e4d5 | 2726 | obstack_alloc (&objfile->objfile_obstack, |
c906108c SS |
2727 | sizeof (struct partial_symtab)); |
2728 | ||
2729 | memset (psymtab, 0, sizeof (struct partial_symtab)); | |
c5aa993b | 2730 | psymtab->filename = obsavestring (filename, strlen (filename), |
8b92e4d5 | 2731 | &objfile->objfile_obstack); |
c5aa993b | 2732 | psymtab->symtab = NULL; |
c906108c SS |
2733 | |
2734 | /* Prepend it to the psymtab list for the objfile it belongs to. | |
2735 | Psymtabs are searched in most recent inserted -> least recent | |
2736 | inserted order. */ | |
2737 | ||
c5aa993b JM |
2738 | psymtab->objfile = objfile; |
2739 | psymtab->next = objfile->psymtabs; | |
2740 | objfile->psymtabs = psymtab; | |
c906108c SS |
2741 | #if 0 |
2742 | { | |
2743 | struct partial_symtab **prev_pst; | |
c5aa993b JM |
2744 | psymtab->objfile = objfile; |
2745 | psymtab->next = NULL; | |
2746 | prev_pst = &(objfile->psymtabs); | |
c906108c | 2747 | while ((*prev_pst) != NULL) |
c5aa993b | 2748 | prev_pst = &((*prev_pst)->next); |
c906108c | 2749 | (*prev_pst) = psymtab; |
c5aa993b | 2750 | } |
c906108c | 2751 | #endif |
c5aa993b | 2752 | |
c906108c SS |
2753 | return (psymtab); |
2754 | } | |
2755 | ||
2756 | void | |
fba45db2 | 2757 | discard_psymtab (struct partial_symtab *pst) |
c906108c SS |
2758 | { |
2759 | struct partial_symtab **prev_pst; | |
2760 | ||
2761 | /* From dbxread.c: | |
2762 | Empty psymtabs happen as a result of header files which don't | |
2763 | have any symbols in them. There can be a lot of them. But this | |
2764 | check is wrong, in that a psymtab with N_SLINE entries but | |
2765 | nothing else is not empty, but we don't realize that. Fixing | |
2766 | that without slowing things down might be tricky. */ | |
2767 | ||
2768 | /* First, snip it out of the psymtab chain */ | |
2769 | ||
2770 | prev_pst = &(pst->objfile->psymtabs); | |
2771 | while ((*prev_pst) != pst) | |
2772 | prev_pst = &((*prev_pst)->next); | |
2773 | (*prev_pst) = pst->next; | |
2774 | ||
2775 | /* Next, put it on a free list for recycling */ | |
2776 | ||
2777 | pst->next = pst->objfile->free_psymtabs; | |
2778 | pst->objfile->free_psymtabs = pst; | |
2779 | } | |
c906108c | 2780 | \f |
c5aa993b | 2781 | |
c906108c SS |
2782 | /* Reset all data structures in gdb which may contain references to symbol |
2783 | table data. */ | |
2784 | ||
2785 | void | |
fba45db2 | 2786 | clear_symtab_users (void) |
c906108c SS |
2787 | { |
2788 | /* Someday, we should do better than this, by only blowing away | |
2789 | the things that really need to be blown. */ | |
c0501be5 DJ |
2790 | |
2791 | /* Clear the "current" symtab first, because it is no longer valid. | |
2792 | breakpoint_re_set may try to access the current symtab. */ | |
2793 | clear_current_source_symtab_and_line (); | |
2794 | ||
c906108c | 2795 | clear_displays (); |
c906108c SS |
2796 | breakpoint_re_set (); |
2797 | set_default_breakpoint (0, 0, 0, 0); | |
c906108c | 2798 | clear_pc_function_cache (); |
06d3b283 | 2799 | observer_notify_new_objfile (NULL); |
9bdcbae7 DJ |
2800 | |
2801 | /* Clear globals which might have pointed into a removed objfile. | |
2802 | FIXME: It's not clear which of these are supposed to persist | |
2803 | between expressions and which ought to be reset each time. */ | |
2804 | expression_context_block = NULL; | |
2805 | innermost_block = NULL; | |
8756216b DP |
2806 | |
2807 | /* Varobj may refer to old symbols, perform a cleanup. */ | |
2808 | varobj_invalidate (); | |
2809 | ||
c906108c SS |
2810 | } |
2811 | ||
74b7792f AC |
2812 | static void |
2813 | clear_symtab_users_cleanup (void *ignore) | |
2814 | { | |
2815 | clear_symtab_users (); | |
2816 | } | |
2817 | ||
c906108c SS |
2818 | /* clear_symtab_users_once: |
2819 | ||
2820 | This function is run after symbol reading, or from a cleanup. | |
2821 | If an old symbol table was obsoleted, the old symbol table | |
5417f6dc | 2822 | has been blown away, but the other GDB data structures that may |
c906108c SS |
2823 | reference it have not yet been cleared or re-directed. (The old |
2824 | symtab was zapped, and the cleanup queued, in free_named_symtab() | |
2825 | below.) | |
2826 | ||
2827 | This function can be queued N times as a cleanup, or called | |
2828 | directly; it will do all the work the first time, and then will be a | |
2829 | no-op until the next time it is queued. This works by bumping a | |
2830 | counter at queueing time. Much later when the cleanup is run, or at | |
2831 | the end of symbol processing (in case the cleanup is discarded), if | |
2832 | the queued count is greater than the "done-count", we do the work | |
2833 | and set the done-count to the queued count. If the queued count is | |
2834 | less than or equal to the done-count, we just ignore the call. This | |
2835 | is needed because reading a single .o file will often replace many | |
2836 | symtabs (one per .h file, for example), and we don't want to reset | |
2837 | the breakpoints N times in the user's face. | |
2838 | ||
2839 | The reason we both queue a cleanup, and call it directly after symbol | |
2840 | reading, is because the cleanup protects us in case of errors, but is | |
2841 | discarded if symbol reading is successful. */ | |
2842 | ||
2843 | #if 0 | |
2844 | /* FIXME: As free_named_symtabs is currently a big noop this function | |
2845 | is no longer needed. */ | |
a14ed312 | 2846 | static void clear_symtab_users_once (void); |
c906108c SS |
2847 | |
2848 | static int clear_symtab_users_queued; | |
2849 | static int clear_symtab_users_done; | |
2850 | ||
2851 | static void | |
fba45db2 | 2852 | clear_symtab_users_once (void) |
c906108c SS |
2853 | { |
2854 | /* Enforce once-per-`do_cleanups'-semantics */ | |
2855 | if (clear_symtab_users_queued <= clear_symtab_users_done) | |
2856 | return; | |
2857 | clear_symtab_users_done = clear_symtab_users_queued; | |
2858 | ||
2859 | clear_symtab_users (); | |
2860 | } | |
2861 | #endif | |
2862 | ||
2863 | /* Delete the specified psymtab, and any others that reference it. */ | |
2864 | ||
2865 | static void | |
fba45db2 | 2866 | cashier_psymtab (struct partial_symtab *pst) |
c906108c SS |
2867 | { |
2868 | struct partial_symtab *ps, *pprev = NULL; | |
2869 | int i; | |
2870 | ||
2871 | /* Find its previous psymtab in the chain */ | |
c5aa993b JM |
2872 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) |
2873 | { | |
2874 | if (ps == pst) | |
2875 | break; | |
2876 | pprev = ps; | |
2877 | } | |
c906108c | 2878 | |
c5aa993b JM |
2879 | if (ps) |
2880 | { | |
2881 | /* Unhook it from the chain. */ | |
2882 | if (ps == pst->objfile->psymtabs) | |
2883 | pst->objfile->psymtabs = ps->next; | |
2884 | else | |
2885 | pprev->next = ps->next; | |
2886 | ||
2887 | /* FIXME, we can't conveniently deallocate the entries in the | |
2888 | partial_symbol lists (global_psymbols/static_psymbols) that | |
2889 | this psymtab points to. These just take up space until all | |
2890 | the psymtabs are reclaimed. Ditto the dependencies list and | |
8b92e4d5 | 2891 | filename, which are all in the objfile_obstack. */ |
c5aa993b JM |
2892 | |
2893 | /* We need to cashier any psymtab that has this one as a dependency... */ | |
2894 | again: | |
2895 | for (ps = pst->objfile->psymtabs; ps; ps = ps->next) | |
2896 | { | |
2897 | for (i = 0; i < ps->number_of_dependencies; i++) | |
2898 | { | |
2899 | if (ps->dependencies[i] == pst) | |
2900 | { | |
2901 | cashier_psymtab (ps); | |
2902 | goto again; /* Must restart, chain has been munged. */ | |
2903 | } | |
2904 | } | |
c906108c | 2905 | } |
c906108c | 2906 | } |
c906108c SS |
2907 | } |
2908 | ||
2909 | /* If a symtab or psymtab for filename NAME is found, free it along | |
2910 | with any dependent breakpoints, displays, etc. | |
2911 | Used when loading new versions of object modules with the "add-file" | |
2912 | command. This is only called on the top-level symtab or psymtab's name; | |
2913 | it is not called for subsidiary files such as .h files. | |
2914 | ||
2915 | Return value is 1 if we blew away the environment, 0 if not. | |
7e73cedf | 2916 | FIXME. The return value appears to never be used. |
c906108c SS |
2917 | |
2918 | FIXME. I think this is not the best way to do this. We should | |
2919 | work on being gentler to the environment while still cleaning up | |
2920 | all stray pointers into the freed symtab. */ | |
2921 | ||
2922 | int | |
fba45db2 | 2923 | free_named_symtabs (char *name) |
c906108c SS |
2924 | { |
2925 | #if 0 | |
2926 | /* FIXME: With the new method of each objfile having it's own | |
2927 | psymtab list, this function needs serious rethinking. In particular, | |
2928 | why was it ever necessary to toss psymtabs with specific compilation | |
2929 | unit filenames, as opposed to all psymtabs from a particular symbol | |
2930 | file? -- fnf | |
2931 | Well, the answer is that some systems permit reloading of particular | |
2932 | compilation units. We want to blow away any old info about these | |
2933 | compilation units, regardless of which objfiles they arrived in. --gnu. */ | |
2934 | ||
52f0bd74 AC |
2935 | struct symtab *s; |
2936 | struct symtab *prev; | |
2937 | struct partial_symtab *ps; | |
c906108c SS |
2938 | struct blockvector *bv; |
2939 | int blewit = 0; | |
2940 | ||
2941 | /* We only wack things if the symbol-reload switch is set. */ | |
2942 | if (!symbol_reloading) | |
2943 | return 0; | |
2944 | ||
2945 | /* Some symbol formats have trouble providing file names... */ | |
2946 | if (name == 0 || *name == '\0') | |
2947 | return 0; | |
2948 | ||
2949 | /* Look for a psymtab with the specified name. */ | |
2950 | ||
2951 | again2: | |
c5aa993b JM |
2952 | for (ps = partial_symtab_list; ps; ps = ps->next) |
2953 | { | |
6314a349 | 2954 | if (strcmp (name, ps->filename) == 0) |
c5aa993b JM |
2955 | { |
2956 | cashier_psymtab (ps); /* Blow it away...and its little dog, too. */ | |
2957 | goto again2; /* Must restart, chain has been munged */ | |
2958 | } | |
c906108c | 2959 | } |
c906108c SS |
2960 | |
2961 | /* Look for a symtab with the specified name. */ | |
2962 | ||
2963 | for (s = symtab_list; s; s = s->next) | |
2964 | { | |
6314a349 | 2965 | if (strcmp (name, s->filename) == 0) |
c906108c SS |
2966 | break; |
2967 | prev = s; | |
2968 | } | |
2969 | ||
2970 | if (s) | |
2971 | { | |
2972 | if (s == symtab_list) | |
2973 | symtab_list = s->next; | |
2974 | else | |
2975 | prev->next = s->next; | |
2976 | ||
2977 | /* For now, queue a delete for all breakpoints, displays, etc., whether | |
c5aa993b JM |
2978 | or not they depend on the symtab being freed. This should be |
2979 | changed so that only those data structures affected are deleted. */ | |
c906108c SS |
2980 | |
2981 | /* But don't delete anything if the symtab is empty. | |
c5aa993b JM |
2982 | This test is necessary due to a bug in "dbxread.c" that |
2983 | causes empty symtabs to be created for N_SO symbols that | |
2984 | contain the pathname of the object file. (This problem | |
2985 | has been fixed in GDB 3.9x). */ | |
c906108c SS |
2986 | |
2987 | bv = BLOCKVECTOR (s); | |
2988 | if (BLOCKVECTOR_NBLOCKS (bv) > 2 | |
2989 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)) | |
2990 | || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK))) | |
2991 | { | |
e2e0b3e5 | 2992 | complaint (&symfile_complaints, _("Replacing old symbols for `%s'"), |
b9caf505 | 2993 | name); |
c906108c SS |
2994 | clear_symtab_users_queued++; |
2995 | make_cleanup (clear_symtab_users_once, 0); | |
2996 | blewit = 1; | |
c5aa993b JM |
2997 | } |
2998 | else | |
e2e0b3e5 AC |
2999 | complaint (&symfile_complaints, _("Empty symbol table found for `%s'"), |
3000 | name); | |
c906108c SS |
3001 | |
3002 | free_symtab (s); | |
3003 | } | |
3004 | else | |
3005 | { | |
3006 | /* It is still possible that some breakpoints will be affected | |
c5aa993b JM |
3007 | even though no symtab was found, since the file might have |
3008 | been compiled without debugging, and hence not be associated | |
3009 | with a symtab. In order to handle this correctly, we would need | |
3010 | to keep a list of text address ranges for undebuggable files. | |
3011 | For now, we do nothing, since this is a fairly obscure case. */ | |
c906108c SS |
3012 | ; |
3013 | } | |
3014 | ||
3015 | /* FIXME, what about the minimal symbol table? */ | |
3016 | return blewit; | |
3017 | #else | |
3018 | return (0); | |
3019 | #endif | |
3020 | } | |
3021 | \f | |
3022 | /* Allocate and partially fill a partial symtab. It will be | |
3023 | completely filled at the end of the symbol list. | |
3024 | ||
d4f3574e | 3025 | FILENAME is the name of the symbol-file we are reading from. */ |
c906108c SS |
3026 | |
3027 | struct partial_symtab * | |
fba45db2 KB |
3028 | start_psymtab_common (struct objfile *objfile, |
3029 | struct section_offsets *section_offsets, char *filename, | |
3030 | CORE_ADDR textlow, struct partial_symbol **global_syms, | |
3031 | struct partial_symbol **static_syms) | |
c906108c SS |
3032 | { |
3033 | struct partial_symtab *psymtab; | |
3034 | ||
3035 | psymtab = allocate_psymtab (filename, objfile); | |
c5aa993b JM |
3036 | psymtab->section_offsets = section_offsets; |
3037 | psymtab->textlow = textlow; | |
3038 | psymtab->texthigh = psymtab->textlow; /* default */ | |
3039 | psymtab->globals_offset = global_syms - objfile->global_psymbols.list; | |
3040 | psymtab->statics_offset = static_syms - objfile->static_psymbols.list; | |
c906108c SS |
3041 | return (psymtab); |
3042 | } | |
3043 | \f | |
2e618c13 AR |
3044 | /* Helper function, initialises partial symbol structure and stashes |
3045 | it into objfile's bcache. Note that our caching mechanism will | |
3046 | use all fields of struct partial_symbol to determine hash value of the | |
3047 | structure. In other words, having two symbols with the same name but | |
3048 | different domain (or address) is possible and correct. */ | |
3049 | ||
11d31d94 | 3050 | static const struct partial_symbol * |
2e618c13 AR |
3051 | add_psymbol_to_bcache (char *name, int namelength, domain_enum domain, |
3052 | enum address_class class, | |
3053 | long val, /* Value as a long */ | |
3054 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ | |
3055 | enum language language, struct objfile *objfile, | |
3056 | int *added) | |
3057 | { | |
3058 | char *buf = name; | |
3059 | /* psymbol is static so that there will be no uninitialized gaps in the | |
3060 | structure which might contain random data, causing cache misses in | |
3061 | bcache. */ | |
3062 | static struct partial_symbol psymbol; | |
3063 | ||
3064 | if (name[namelength] != '\0') | |
3065 | { | |
3066 | buf = alloca (namelength + 1); | |
3067 | /* Create local copy of the partial symbol */ | |
3068 | memcpy (buf, name, namelength); | |
3069 | buf[namelength] = '\0'; | |
3070 | } | |
3071 | /* val and coreaddr are mutually exclusive, one of them *will* be zero */ | |
3072 | if (val != 0) | |
3073 | { | |
3074 | SYMBOL_VALUE (&psymbol) = val; | |
3075 | } | |
3076 | else | |
3077 | { | |
3078 | SYMBOL_VALUE_ADDRESS (&psymbol) = coreaddr; | |
3079 | } | |
3080 | SYMBOL_SECTION (&psymbol) = 0; | |
3081 | SYMBOL_LANGUAGE (&psymbol) = language; | |
3082 | PSYMBOL_DOMAIN (&psymbol) = domain; | |
3083 | PSYMBOL_CLASS (&psymbol) = class; | |
3084 | ||
3085 | SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile); | |
3086 | ||
3087 | /* Stash the partial symbol away in the cache */ | |
11d31d94 TT |
3088 | return bcache_full (&psymbol, sizeof (struct partial_symbol), |
3089 | objfile->psymbol_cache, added); | |
2e618c13 AR |
3090 | } |
3091 | ||
3092 | /* Helper function, adds partial symbol to the given partial symbol | |
3093 | list. */ | |
3094 | ||
3095 | static void | |
3096 | append_psymbol_to_list (struct psymbol_allocation_list *list, | |
11d31d94 | 3097 | const struct partial_symbol *psym, |
2e618c13 AR |
3098 | struct objfile *objfile) |
3099 | { | |
3100 | if (list->next >= list->list + list->size) | |
3101 | extend_psymbol_list (list, objfile); | |
11d31d94 | 3102 | *list->next++ = (struct partial_symbol *) psym; |
2e618c13 AR |
3103 | OBJSTAT (objfile, n_psyms++); |
3104 | } | |
3105 | ||
c906108c | 3106 | /* Add a symbol with a long value to a psymtab. |
5417f6dc | 3107 | Since one arg is a struct, we pass in a ptr and deref it (sigh). |
5c4e30ca DC |
3108 | Return the partial symbol that has been added. */ |
3109 | ||
3110 | /* NOTE: carlton/2003-09-11: The reason why we return the partial | |
3111 | symbol is so that callers can get access to the symbol's demangled | |
3112 | name, which they don't have any cheap way to determine otherwise. | |
3113 | (Currenly, dwarf2read.c is the only file who uses that information, | |
3114 | though it's possible that other readers might in the future.) | |
3115 | Elena wasn't thrilled about that, and I don't blame her, but we | |
3116 | couldn't come up with a better way to get that information. If | |
3117 | it's needed in other situations, we could consider breaking up | |
3118 | SYMBOL_SET_NAMES to provide access to the demangled name lookup | |
3119 | cache. */ | |
3120 | ||
3121 | const struct partial_symbol * | |
176620f1 | 3122 | add_psymbol_to_list (char *name, int namelength, domain_enum domain, |
fba45db2 | 3123 | enum address_class class, |
2e618c13 AR |
3124 | struct psymbol_allocation_list *list, |
3125 | long val, /* Value as a long */ | |
fba45db2 KB |
3126 | CORE_ADDR coreaddr, /* Value as a CORE_ADDR */ |
3127 | enum language language, struct objfile *objfile) | |
c906108c | 3128 | { |
11d31d94 | 3129 | const struct partial_symbol *psym; |
2de7ced7 | 3130 | |
2e618c13 | 3131 | int added; |
c906108c SS |
3132 | |
3133 | /* Stash the partial symbol away in the cache */ | |
2e618c13 AR |
3134 | psym = add_psymbol_to_bcache (name, namelength, domain, class, |
3135 | val, coreaddr, language, objfile, &added); | |
c906108c | 3136 | |
2e618c13 AR |
3137 | /* Do not duplicate global partial symbols. */ |
3138 | if (list == &objfile->global_psymbols | |
3139 | && !added) | |
3140 | return psym; | |
5c4e30ca | 3141 | |
2e618c13 AR |
3142 | /* Save pointer to partial symbol in psymtab, growing symtab if needed. */ |
3143 | append_psymbol_to_list (list, psym, objfile); | |
5c4e30ca | 3144 | return psym; |
c906108c SS |
3145 | } |
3146 | ||
c906108c SS |
3147 | /* Initialize storage for partial symbols. */ |
3148 | ||
3149 | void | |
fba45db2 | 3150 | init_psymbol_list (struct objfile *objfile, int total_symbols) |
c906108c SS |
3151 | { |
3152 | /* Free any previously allocated psymbol lists. */ | |
c5aa993b JM |
3153 | |
3154 | if (objfile->global_psymbols.list) | |
c906108c | 3155 | { |
2dc74dc1 | 3156 | xfree (objfile->global_psymbols.list); |
c906108c | 3157 | } |
c5aa993b | 3158 | if (objfile->static_psymbols.list) |
c906108c | 3159 | { |
2dc74dc1 | 3160 | xfree (objfile->static_psymbols.list); |
c906108c | 3161 | } |
c5aa993b | 3162 | |
c906108c SS |
3163 | /* Current best guess is that approximately a twentieth |
3164 | of the total symbols (in a debugging file) are global or static | |
3165 | oriented symbols */ | |
c906108c | 3166 | |
c5aa993b JM |
3167 | objfile->global_psymbols.size = total_symbols / 10; |
3168 | objfile->static_psymbols.size = total_symbols / 10; | |
3169 | ||
3170 | if (objfile->global_psymbols.size > 0) | |
c906108c | 3171 | { |
c5aa993b JM |
3172 | objfile->global_psymbols.next = |
3173 | objfile->global_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3174 | xmalloc ((objfile->global_psymbols.size |
3175 | * sizeof (struct partial_symbol *))); | |
c906108c | 3176 | } |
c5aa993b | 3177 | if (objfile->static_psymbols.size > 0) |
c906108c | 3178 | { |
c5aa993b JM |
3179 | objfile->static_psymbols.next = |
3180 | objfile->static_psymbols.list = (struct partial_symbol **) | |
7936743b AC |
3181 | xmalloc ((objfile->static_psymbols.size |
3182 | * sizeof (struct partial_symbol *))); | |
c906108c SS |
3183 | } |
3184 | } | |
3185 | ||
3186 | /* OVERLAYS: | |
3187 | The following code implements an abstraction for debugging overlay sections. | |
3188 | ||
3189 | The target model is as follows: | |
3190 | 1) The gnu linker will permit multiple sections to be mapped into the | |
c5aa993b | 3191 | same VMA, each with its own unique LMA (or load address). |
c906108c | 3192 | 2) It is assumed that some runtime mechanism exists for mapping the |
c5aa993b | 3193 | sections, one by one, from the load address into the VMA address. |
5417f6dc | 3194 | 3) This code provides a mechanism for gdb to keep track of which |
c5aa993b JM |
3195 | sections should be considered to be mapped from the VMA to the LMA. |
3196 | This information is used for symbol lookup, and memory read/write. | |
5417f6dc | 3197 | For instance, if a section has been mapped then its contents |
c5aa993b | 3198 | should be read from the VMA, otherwise from the LMA. |
c906108c SS |
3199 | |
3200 | Two levels of debugger support for overlays are available. One is | |
3201 | "manual", in which the debugger relies on the user to tell it which | |
3202 | overlays are currently mapped. This level of support is | |
3203 | implemented entirely in the core debugger, and the information about | |
3204 | whether a section is mapped is kept in the objfile->obj_section table. | |
3205 | ||
3206 | The second level of support is "automatic", and is only available if | |
3207 | the target-specific code provides functionality to read the target's | |
3208 | overlay mapping table, and translate its contents for the debugger | |
3209 | (by updating the mapped state information in the obj_section tables). | |
3210 | ||
3211 | The interface is as follows: | |
c5aa993b JM |
3212 | User commands: |
3213 | overlay map <name> -- tell gdb to consider this section mapped | |
3214 | overlay unmap <name> -- tell gdb to consider this section unmapped | |
3215 | overlay list -- list the sections that GDB thinks are mapped | |
3216 | overlay read-target -- get the target's state of what's mapped | |
3217 | overlay off/manual/auto -- set overlay debugging state | |
3218 | Functional interface: | |
3219 | find_pc_mapped_section(pc): if the pc is in the range of a mapped | |
3220 | section, return that section. | |
5417f6dc | 3221 | find_pc_overlay(pc): find any overlay section that contains |
c5aa993b JM |
3222 | the pc, either in its VMA or its LMA |
3223 | overlay_is_mapped(sect): true if overlay is marked as mapped | |
3224 | section_is_overlay(sect): true if section's VMA != LMA | |
3225 | pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA | |
3226 | pc_in_unmapped_range(...): true if pc belongs to section's LMA | |
9ec8e6a0 | 3227 | sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap |
c5aa993b JM |
3228 | overlay_mapped_address(...): map an address from section's LMA to VMA |
3229 | overlay_unmapped_address(...): map an address from section's VMA to LMA | |
3230 | symbol_overlayed_address(...): Return a "current" address for symbol: | |
3231 | either in VMA or LMA depending on whether | |
3232 | the symbol's section is currently mapped | |
c906108c SS |
3233 | */ |
3234 | ||
3235 | /* Overlay debugging state: */ | |
3236 | ||
d874f1e2 | 3237 | enum overlay_debugging_state overlay_debugging = ovly_off; |
c906108c SS |
3238 | int overlay_cache_invalid = 0; /* True if need to refresh mapped state */ |
3239 | ||
c906108c | 3240 | /* Function: section_is_overlay (SECTION) |
5417f6dc | 3241 | Returns true if SECTION has VMA not equal to LMA, ie. |
c906108c SS |
3242 | SECTION is loaded at an address different from where it will "run". */ |
3243 | ||
3244 | int | |
fba45db2 | 3245 | section_is_overlay (asection *section) |
c906108c | 3246 | { |
fbd35540 MS |
3247 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3248 | ||
c906108c SS |
3249 | if (overlay_debugging) |
3250 | if (section && section->lma != 0 && | |
3251 | section->vma != section->lma) | |
3252 | return 1; | |
3253 | ||
3254 | return 0; | |
3255 | } | |
3256 | ||
3257 | /* Function: overlay_invalidate_all (void) | |
3258 | Invalidate the mapped state of all overlay sections (mark it as stale). */ | |
3259 | ||
3260 | static void | |
fba45db2 | 3261 | overlay_invalidate_all (void) |
c906108c | 3262 | { |
c5aa993b | 3263 | struct objfile *objfile; |
c906108c SS |
3264 | struct obj_section *sect; |
3265 | ||
3266 | ALL_OBJSECTIONS (objfile, sect) | |
3267 | if (section_is_overlay (sect->the_bfd_section)) | |
c5aa993b | 3268 | sect->ovly_mapped = -1; |
c906108c SS |
3269 | } |
3270 | ||
3271 | /* Function: overlay_is_mapped (SECTION) | |
5417f6dc | 3272 | Returns true if section is an overlay, and is currently mapped. |
c906108c SS |
3273 | Private: public access is thru function section_is_mapped. |
3274 | ||
3275 | Access to the ovly_mapped flag is restricted to this function, so | |
3276 | that we can do automatic update. If the global flag | |
3277 | OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call | |
3278 | overlay_invalidate_all. If the mapped state of the particular | |
3279 | section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */ | |
3280 | ||
c5aa993b | 3281 | static int |
fba45db2 | 3282 | overlay_is_mapped (struct obj_section *osect) |
c906108c SS |
3283 | { |
3284 | if (osect == 0 || !section_is_overlay (osect->the_bfd_section)) | |
3285 | return 0; | |
3286 | ||
c5aa993b | 3287 | switch (overlay_debugging) |
c906108c SS |
3288 | { |
3289 | default: | |
d874f1e2 | 3290 | case ovly_off: |
c5aa993b | 3291 | return 0; /* overlay debugging off */ |
d874f1e2 | 3292 | case ovly_auto: /* overlay debugging automatic */ |
1c772458 | 3293 | /* Unles there is a gdbarch_overlay_update function, |
c5aa993b | 3294 | there's really nothing useful to do here (can't really go auto) */ |
1c772458 | 3295 | if (gdbarch_overlay_update_p (current_gdbarch)) |
c906108c SS |
3296 | { |
3297 | if (overlay_cache_invalid) | |
3298 | { | |
3299 | overlay_invalidate_all (); | |
3300 | overlay_cache_invalid = 0; | |
3301 | } | |
3302 | if (osect->ovly_mapped == -1) | |
1c772458 | 3303 | gdbarch_overlay_update (current_gdbarch, osect); |
c906108c SS |
3304 | } |
3305 | /* fall thru to manual case */ | |
d874f1e2 | 3306 | case ovly_on: /* overlay debugging manual */ |
c906108c SS |
3307 | return osect->ovly_mapped == 1; |
3308 | } | |
3309 | } | |
3310 | ||
3311 | /* Function: section_is_mapped | |
3312 | Returns true if section is an overlay, and is currently mapped. */ | |
3313 | ||
3314 | int | |
fba45db2 | 3315 | section_is_mapped (asection *section) |
c906108c | 3316 | { |
c5aa993b | 3317 | struct objfile *objfile; |
c906108c SS |
3318 | struct obj_section *osect; |
3319 | ||
3320 | if (overlay_debugging) | |
3321 | if (section && section_is_overlay (section)) | |
3322 | ALL_OBJSECTIONS (objfile, osect) | |
3323 | if (osect->the_bfd_section == section) | |
c5aa993b | 3324 | return overlay_is_mapped (osect); |
c906108c SS |
3325 | |
3326 | return 0; | |
3327 | } | |
3328 | ||
3329 | /* Function: pc_in_unmapped_range | |
3330 | If PC falls into the lma range of SECTION, return true, else false. */ | |
3331 | ||
3332 | CORE_ADDR | |
fba45db2 | 3333 | pc_in_unmapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3334 | { |
fbd35540 MS |
3335 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3336 | ||
c906108c SS |
3337 | int size; |
3338 | ||
3339 | if (overlay_debugging) | |
3340 | if (section && section_is_overlay (section)) | |
3341 | { | |
2c500098 | 3342 | size = bfd_get_section_size (section); |
c906108c SS |
3343 | if (section->lma <= pc && pc < section->lma + size) |
3344 | return 1; | |
3345 | } | |
3346 | return 0; | |
3347 | } | |
3348 | ||
3349 | /* Function: pc_in_mapped_range | |
3350 | If PC falls into the vma range of SECTION, return true, else false. */ | |
3351 | ||
3352 | CORE_ADDR | |
fba45db2 | 3353 | pc_in_mapped_range (CORE_ADDR pc, asection *section) |
c906108c | 3354 | { |
fbd35540 MS |
3355 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3356 | ||
c906108c SS |
3357 | int size; |
3358 | ||
3359 | if (overlay_debugging) | |
3360 | if (section && section_is_overlay (section)) | |
3361 | { | |
2c500098 | 3362 | size = bfd_get_section_size (section); |
c906108c SS |
3363 | if (section->vma <= pc && pc < section->vma + size) |
3364 | return 1; | |
3365 | } | |
3366 | return 0; | |
3367 | } | |
3368 | ||
9ec8e6a0 JB |
3369 | |
3370 | /* Return true if the mapped ranges of sections A and B overlap, false | |
3371 | otherwise. */ | |
b9362cc7 | 3372 | static int |
9ec8e6a0 JB |
3373 | sections_overlap (asection *a, asection *b) |
3374 | { | |
fbd35540 MS |
3375 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3376 | ||
9ec8e6a0 | 3377 | CORE_ADDR a_start = a->vma; |
2c500098 | 3378 | CORE_ADDR a_end = a->vma + bfd_get_section_size (a); |
9ec8e6a0 | 3379 | CORE_ADDR b_start = b->vma; |
2c500098 | 3380 | CORE_ADDR b_end = b->vma + bfd_get_section_size (b); |
9ec8e6a0 JB |
3381 | |
3382 | return (a_start < b_end && b_start < a_end); | |
3383 | } | |
3384 | ||
c906108c SS |
3385 | /* Function: overlay_unmapped_address (PC, SECTION) |
3386 | Returns the address corresponding to PC in the unmapped (load) range. | |
3387 | May be the same as PC. */ | |
3388 | ||
3389 | CORE_ADDR | |
fba45db2 | 3390 | overlay_unmapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3391 | { |
fbd35540 MS |
3392 | /* FIXME: need bfd *, so we can use bfd_section_lma methods. */ |
3393 | ||
c906108c SS |
3394 | if (overlay_debugging) |
3395 | if (section && section_is_overlay (section) && | |
3396 | pc_in_mapped_range (pc, section)) | |
3397 | return pc + section->lma - section->vma; | |
3398 | ||
3399 | return pc; | |
3400 | } | |
3401 | ||
3402 | /* Function: overlay_mapped_address (PC, SECTION) | |
3403 | Returns the address corresponding to PC in the mapped (runtime) range. | |
3404 | May be the same as PC. */ | |
3405 | ||
3406 | CORE_ADDR | |
fba45db2 | 3407 | overlay_mapped_address (CORE_ADDR pc, asection *section) |
c906108c | 3408 | { |
fbd35540 MS |
3409 | /* FIXME: need bfd *, so we can use bfd_section_vma methods. */ |
3410 | ||
c906108c SS |
3411 | if (overlay_debugging) |
3412 | if (section && section_is_overlay (section) && | |
3413 | pc_in_unmapped_range (pc, section)) | |
3414 | return pc + section->vma - section->lma; | |
3415 | ||
3416 | return pc; | |
3417 | } | |
3418 | ||
3419 | ||
5417f6dc | 3420 | /* Function: symbol_overlayed_address |
c906108c SS |
3421 | Return one of two addresses (relative to the VMA or to the LMA), |
3422 | depending on whether the section is mapped or not. */ | |
3423 | ||
c5aa993b | 3424 | CORE_ADDR |
fba45db2 | 3425 | symbol_overlayed_address (CORE_ADDR address, asection *section) |
c906108c SS |
3426 | { |
3427 | if (overlay_debugging) | |
3428 | { | |
3429 | /* If the symbol has no section, just return its regular address. */ | |
3430 | if (section == 0) | |
3431 | return address; | |
3432 | /* If the symbol's section is not an overlay, just return its address */ | |
3433 | if (!section_is_overlay (section)) | |
3434 | return address; | |
3435 | /* If the symbol's section is mapped, just return its address */ | |
3436 | if (section_is_mapped (section)) | |
3437 | return address; | |
3438 | /* | |
3439 | * HOWEVER: if the symbol is in an overlay section which is NOT mapped, | |
3440 | * then return its LOADED address rather than its vma address!! | |
3441 | */ | |
3442 | return overlay_unmapped_address (address, section); | |
3443 | } | |
3444 | return address; | |
3445 | } | |
3446 | ||
5417f6dc | 3447 | /* Function: find_pc_overlay (PC) |
c906108c SS |
3448 | Return the best-match overlay section for PC: |
3449 | If PC matches a mapped overlay section's VMA, return that section. | |
3450 | Else if PC matches an unmapped section's VMA, return that section. | |
3451 | Else if PC matches an unmapped section's LMA, return that section. */ | |
3452 | ||
3453 | asection * | |
fba45db2 | 3454 | find_pc_overlay (CORE_ADDR pc) |
c906108c | 3455 | { |
c5aa993b | 3456 | struct objfile *objfile; |
c906108c SS |
3457 | struct obj_section *osect, *best_match = NULL; |
3458 | ||
3459 | if (overlay_debugging) | |
3460 | ALL_OBJSECTIONS (objfile, osect) | |
3461 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3462 | { |
3463 | if (pc_in_mapped_range (pc, osect->the_bfd_section)) | |
3464 | { | |
3465 | if (overlay_is_mapped (osect)) | |
3466 | return osect->the_bfd_section; | |
3467 | else | |
3468 | best_match = osect; | |
3469 | } | |
3470 | else if (pc_in_unmapped_range (pc, osect->the_bfd_section)) | |
3471 | best_match = osect; | |
3472 | } | |
c906108c SS |
3473 | return best_match ? best_match->the_bfd_section : NULL; |
3474 | } | |
3475 | ||
3476 | /* Function: find_pc_mapped_section (PC) | |
5417f6dc | 3477 | If PC falls into the VMA address range of an overlay section that is |
c906108c SS |
3478 | currently marked as MAPPED, return that section. Else return NULL. */ |
3479 | ||
3480 | asection * | |
fba45db2 | 3481 | find_pc_mapped_section (CORE_ADDR pc) |
c906108c | 3482 | { |
c5aa993b | 3483 | struct objfile *objfile; |
c906108c SS |
3484 | struct obj_section *osect; |
3485 | ||
3486 | if (overlay_debugging) | |
3487 | ALL_OBJSECTIONS (objfile, osect) | |
3488 | if (pc_in_mapped_range (pc, osect->the_bfd_section) && | |
3489 | overlay_is_mapped (osect)) | |
c5aa993b | 3490 | return osect->the_bfd_section; |
c906108c SS |
3491 | |
3492 | return NULL; | |
3493 | } | |
3494 | ||
3495 | /* Function: list_overlays_command | |
3496 | Print a list of mapped sections and their PC ranges */ | |
3497 | ||
3498 | void | |
fba45db2 | 3499 | list_overlays_command (char *args, int from_tty) |
c906108c | 3500 | { |
c5aa993b JM |
3501 | int nmapped = 0; |
3502 | struct objfile *objfile; | |
c906108c SS |
3503 | struct obj_section *osect; |
3504 | ||
3505 | if (overlay_debugging) | |
3506 | ALL_OBJSECTIONS (objfile, osect) | |
3507 | if (overlay_is_mapped (osect)) | |
c5aa993b JM |
3508 | { |
3509 | const char *name; | |
3510 | bfd_vma lma, vma; | |
3511 | int size; | |
3512 | ||
3513 | vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section); | |
3514 | lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section); | |
2c500098 | 3515 | size = bfd_get_section_size (osect->the_bfd_section); |
c5aa993b JM |
3516 | name = bfd_section_name (objfile->obfd, osect->the_bfd_section); |
3517 | ||
3518 | printf_filtered ("Section %s, loaded at ", name); | |
ed49a04f | 3519 | fputs_filtered (paddress (lma), gdb_stdout); |
c5aa993b | 3520 | puts_filtered (" - "); |
ed49a04f | 3521 | fputs_filtered (paddress (lma + size), gdb_stdout); |
c5aa993b | 3522 | printf_filtered (", mapped at "); |
ed49a04f | 3523 | fputs_filtered (paddress (vma), gdb_stdout); |
c5aa993b | 3524 | puts_filtered (" - "); |
ed49a04f | 3525 | fputs_filtered (paddress (vma + size), gdb_stdout); |
c5aa993b JM |
3526 | puts_filtered ("\n"); |
3527 | ||
3528 | nmapped++; | |
3529 | } | |
c906108c | 3530 | if (nmapped == 0) |
a3f17187 | 3531 | printf_filtered (_("No sections are mapped.\n")); |
c906108c SS |
3532 | } |
3533 | ||
3534 | /* Function: map_overlay_command | |
3535 | Mark the named section as mapped (ie. residing at its VMA address). */ | |
3536 | ||
3537 | void | |
fba45db2 | 3538 | map_overlay_command (char *args, int from_tty) |
c906108c | 3539 | { |
c5aa993b JM |
3540 | struct objfile *objfile, *objfile2; |
3541 | struct obj_section *sec, *sec2; | |
3542 | asection *bfdsec; | |
c906108c SS |
3543 | |
3544 | if (!overlay_debugging) | |
8a3fe4f8 | 3545 | error (_("\ |
515ad16c | 3546 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3547 | the 'overlay manual' command.")); |
c906108c SS |
3548 | |
3549 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3550 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3551 | |
3552 | /* First, find a section matching the user supplied argument */ | |
3553 | ALL_OBJSECTIONS (objfile, sec) | |
3554 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3555 | { |
3556 | /* Now, check to see if the section is an overlay. */ | |
3557 | bfdsec = sec->the_bfd_section; | |
3558 | if (!section_is_overlay (bfdsec)) | |
3559 | continue; /* not an overlay section */ | |
3560 | ||
3561 | /* Mark the overlay as "mapped" */ | |
3562 | sec->ovly_mapped = 1; | |
3563 | ||
3564 | /* Next, make a pass and unmap any sections that are | |
3565 | overlapped by this new section: */ | |
3566 | ALL_OBJSECTIONS (objfile2, sec2) | |
9ec8e6a0 JB |
3567 | if (sec2->ovly_mapped |
3568 | && sec != sec2 | |
3569 | && sec->the_bfd_section != sec2->the_bfd_section | |
3570 | && sections_overlap (sec->the_bfd_section, | |
3571 | sec2->the_bfd_section)) | |
c5aa993b JM |
3572 | { |
3573 | if (info_verbose) | |
a3f17187 | 3574 | printf_unfiltered (_("Note: section %s unmapped by overlap\n"), |
c5aa993b JM |
3575 | bfd_section_name (objfile->obfd, |
3576 | sec2->the_bfd_section)); | |
3577 | sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */ | |
3578 | } | |
3579 | return; | |
3580 | } | |
8a3fe4f8 | 3581 | error (_("No overlay section called %s"), args); |
c906108c SS |
3582 | } |
3583 | ||
3584 | /* Function: unmap_overlay_command | |
5417f6dc | 3585 | Mark the overlay section as unmapped |
c906108c SS |
3586 | (ie. resident in its LMA address range, rather than the VMA range). */ |
3587 | ||
3588 | void | |
fba45db2 | 3589 | unmap_overlay_command (char *args, int from_tty) |
c906108c | 3590 | { |
c5aa993b | 3591 | struct objfile *objfile; |
c906108c SS |
3592 | struct obj_section *sec; |
3593 | ||
3594 | if (!overlay_debugging) | |
8a3fe4f8 | 3595 | error (_("\ |
515ad16c | 3596 | Overlay debugging not enabled. Use either the 'overlay auto' or\n\ |
8a3fe4f8 | 3597 | the 'overlay manual' command.")); |
c906108c SS |
3598 | |
3599 | if (args == 0 || *args == 0) | |
8a3fe4f8 | 3600 | error (_("Argument required: name of an overlay section")); |
c906108c SS |
3601 | |
3602 | /* First, find a section matching the user supplied argument */ | |
3603 | ALL_OBJSECTIONS (objfile, sec) | |
3604 | if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section), args)) | |
c5aa993b JM |
3605 | { |
3606 | if (!sec->ovly_mapped) | |
8a3fe4f8 | 3607 | error (_("Section %s is not mapped"), args); |
c5aa993b JM |
3608 | sec->ovly_mapped = 0; |
3609 | return; | |
3610 | } | |
8a3fe4f8 | 3611 | error (_("No overlay section called %s"), args); |
c906108c SS |
3612 | } |
3613 | ||
3614 | /* Function: overlay_auto_command | |
3615 | A utility command to turn on overlay debugging. | |
3616 | Possibly this should be done via a set/show command. */ | |
3617 | ||
3618 | static void | |
fba45db2 | 3619 | overlay_auto_command (char *args, int from_tty) |
c906108c | 3620 | { |
d874f1e2 | 3621 | overlay_debugging = ovly_auto; |
1900040c | 3622 | enable_overlay_breakpoints (); |
c906108c | 3623 | if (info_verbose) |
a3f17187 | 3624 | printf_unfiltered (_("Automatic overlay debugging enabled.")); |
c906108c SS |
3625 | } |
3626 | ||
3627 | /* Function: overlay_manual_command | |
3628 | A utility command to turn on overlay debugging. | |
3629 | Possibly this should be done via a set/show command. */ | |
3630 | ||
3631 | static void | |
fba45db2 | 3632 | overlay_manual_command (char *args, int from_tty) |
c906108c | 3633 | { |
d874f1e2 | 3634 | overlay_debugging = ovly_on; |
1900040c | 3635 | disable_overlay_breakpoints (); |
c906108c | 3636 | if (info_verbose) |
a3f17187 | 3637 | printf_unfiltered (_("Overlay debugging enabled.")); |
c906108c SS |
3638 | } |
3639 | ||
3640 | /* Function: overlay_off_command | |
3641 | A utility command to turn on overlay debugging. | |
3642 | Possibly this should be done via a set/show command. */ | |
3643 | ||
3644 | static void | |
fba45db2 | 3645 | overlay_off_command (char *args, int from_tty) |
c906108c | 3646 | { |
d874f1e2 | 3647 | overlay_debugging = ovly_off; |
1900040c | 3648 | disable_overlay_breakpoints (); |
c906108c | 3649 | if (info_verbose) |
a3f17187 | 3650 | printf_unfiltered (_("Overlay debugging disabled.")); |
c906108c SS |
3651 | } |
3652 | ||
3653 | static void | |
fba45db2 | 3654 | overlay_load_command (char *args, int from_tty) |
c906108c | 3655 | { |
1c772458 UW |
3656 | if (gdbarch_overlay_update_p (current_gdbarch)) |
3657 | gdbarch_overlay_update (current_gdbarch, NULL); | |
c906108c | 3658 | else |
8a3fe4f8 | 3659 | error (_("This target does not know how to read its overlay state.")); |
c906108c SS |
3660 | } |
3661 | ||
3662 | /* Function: overlay_command | |
3663 | A place-holder for a mis-typed command */ | |
3664 | ||
3665 | /* Command list chain containing all defined "overlay" subcommands. */ | |
3666 | struct cmd_list_element *overlaylist; | |
3667 | ||
3668 | static void | |
fba45db2 | 3669 | overlay_command (char *args, int from_tty) |
c906108c | 3670 | { |
c5aa993b | 3671 | printf_unfiltered |
c906108c SS |
3672 | ("\"overlay\" must be followed by the name of an overlay command.\n"); |
3673 | help_list (overlaylist, "overlay ", -1, gdb_stdout); | |
3674 | } | |
3675 | ||
3676 | ||
3677 | /* Target Overlays for the "Simplest" overlay manager: | |
3678 | ||
5417f6dc RM |
3679 | This is GDB's default target overlay layer. It works with the |
3680 | minimal overlay manager supplied as an example by Cygnus. The | |
1c772458 | 3681 | entry point is via a function pointer "gdbarch_overlay_update", |
5417f6dc | 3682 | so targets that use a different runtime overlay manager can |
c906108c SS |
3683 | substitute their own overlay_update function and take over the |
3684 | function pointer. | |
3685 | ||
3686 | The overlay_update function pokes around in the target's data structures | |
3687 | to see what overlays are mapped, and updates GDB's overlay mapping with | |
3688 | this information. | |
3689 | ||
3690 | In this simple implementation, the target data structures are as follows: | |
c5aa993b JM |
3691 | unsigned _novlys; /# number of overlay sections #/ |
3692 | unsigned _ovly_table[_novlys][4] = { | |
3693 | {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/ | |
3694 | {..., ..., ..., ...}, | |
3695 | } | |
3696 | unsigned _novly_regions; /# number of overlay regions #/ | |
3697 | unsigned _ovly_region_table[_novly_regions][3] = { | |
3698 | {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/ | |
3699 | {..., ..., ...}, | |
3700 | } | |
c906108c SS |
3701 | These functions will attempt to update GDB's mappedness state in the |
3702 | symbol section table, based on the target's mappedness state. | |
3703 | ||
3704 | To do this, we keep a cached copy of the target's _ovly_table, and | |
3705 | attempt to detect when the cached copy is invalidated. The main | |
3706 | entry point is "simple_overlay_update(SECT), which looks up SECT in | |
3707 | the cached table and re-reads only the entry for that section from | |
3708 | the target (whenever possible). | |
3709 | */ | |
3710 | ||
3711 | /* Cached, dynamically allocated copies of the target data structures: */ | |
c5aa993b | 3712 | static unsigned (*cache_ovly_table)[4] = 0; |
c906108c | 3713 | #if 0 |
c5aa993b | 3714 | static unsigned (*cache_ovly_region_table)[3] = 0; |
c906108c | 3715 | #endif |
c5aa993b | 3716 | static unsigned cache_novlys = 0; |
c906108c | 3717 | #if 0 |
c5aa993b | 3718 | static unsigned cache_novly_regions = 0; |
c906108c SS |
3719 | #endif |
3720 | static CORE_ADDR cache_ovly_table_base = 0; | |
3721 | #if 0 | |
3722 | static CORE_ADDR cache_ovly_region_table_base = 0; | |
3723 | #endif | |
c5aa993b JM |
3724 | enum ovly_index |
3725 | { | |
3726 | VMA, SIZE, LMA, MAPPED | |
3727 | }; | |
9a76efb6 UW |
3728 | #define TARGET_LONG_BYTES (gdbarch_long_bit (current_gdbarch) \ |
3729 | / TARGET_CHAR_BIT) | |
c906108c SS |
3730 | |
3731 | /* Throw away the cached copy of _ovly_table */ | |
3732 | static void | |
fba45db2 | 3733 | simple_free_overlay_table (void) |
c906108c SS |
3734 | { |
3735 | if (cache_ovly_table) | |
b8c9b27d | 3736 | xfree (cache_ovly_table); |
c5aa993b | 3737 | cache_novlys = 0; |
c906108c SS |
3738 | cache_ovly_table = NULL; |
3739 | cache_ovly_table_base = 0; | |
3740 | } | |
3741 | ||
3742 | #if 0 | |
3743 | /* Throw away the cached copy of _ovly_region_table */ | |
3744 | static void | |
fba45db2 | 3745 | simple_free_overlay_region_table (void) |
c906108c SS |
3746 | { |
3747 | if (cache_ovly_region_table) | |
b8c9b27d | 3748 | xfree (cache_ovly_region_table); |
c5aa993b | 3749 | cache_novly_regions = 0; |
c906108c SS |
3750 | cache_ovly_region_table = NULL; |
3751 | cache_ovly_region_table_base = 0; | |
3752 | } | |
3753 | #endif | |
3754 | ||
3755 | /* Read an array of ints from the target into a local buffer. | |
3756 | Convert to host order. int LEN is number of ints */ | |
3757 | static void | |
fba45db2 | 3758 | read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len) |
c906108c | 3759 | { |
34c0bd93 | 3760 | /* FIXME (alloca): Not safe if array is very large. */ |
777ea8f1 | 3761 | gdb_byte *buf = alloca (len * TARGET_LONG_BYTES); |
c5aa993b | 3762 | int i; |
c906108c SS |
3763 | |
3764 | read_memory (memaddr, buf, len * TARGET_LONG_BYTES); | |
3765 | for (i = 0; i < len; i++) | |
c5aa993b | 3766 | myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES * i + buf, |
c906108c SS |
3767 | TARGET_LONG_BYTES); |
3768 | } | |
3769 | ||
3770 | /* Find and grab a copy of the target _ovly_table | |
3771 | (and _novlys, which is needed for the table's size) */ | |
c5aa993b | 3772 | static int |
fba45db2 | 3773 | simple_read_overlay_table (void) |
c906108c | 3774 | { |
0d43edd1 | 3775 | struct minimal_symbol *novlys_msym, *ovly_table_msym; |
c906108c SS |
3776 | |
3777 | simple_free_overlay_table (); | |
9b27852e | 3778 | novlys_msym = lookup_minimal_symbol ("_novlys", NULL, NULL); |
0d43edd1 | 3779 | if (! novlys_msym) |
c906108c | 3780 | { |
8a3fe4f8 | 3781 | error (_("Error reading inferior's overlay table: " |
0d43edd1 | 3782 | "couldn't find `_novlys' variable\n" |
8a3fe4f8 | 3783 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 | 3784 | return 0; |
c906108c | 3785 | } |
0d43edd1 | 3786 | |
9b27852e | 3787 | ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL, NULL); |
0d43edd1 JB |
3788 | if (! ovly_table_msym) |
3789 | { | |
8a3fe4f8 | 3790 | error (_("Error reading inferior's overlay table: couldn't find " |
0d43edd1 | 3791 | "`_ovly_table' array\n" |
8a3fe4f8 | 3792 | "in inferior. Use `overlay manual' mode.")); |
0d43edd1 JB |
3793 | return 0; |
3794 | } | |
3795 | ||
3796 | cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym), 4); | |
3797 | cache_ovly_table | |
3798 | = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table)); | |
3799 | cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym); | |
3800 | read_target_long_array (cache_ovly_table_base, | |
777ea8f1 | 3801 | (unsigned int *) cache_ovly_table, |
0d43edd1 JB |
3802 | cache_novlys * 4); |
3803 | ||
c5aa993b | 3804 | return 1; /* SUCCESS */ |
c906108c SS |
3805 | } |
3806 | ||
3807 | #if 0 | |
3808 | /* Find and grab a copy of the target _ovly_region_table | |
3809 | (and _novly_regions, which is needed for the table's size) */ | |
c5aa993b | 3810 | static int |
fba45db2 | 3811 | simple_read_overlay_region_table (void) |
c906108c SS |
3812 | { |
3813 | struct minimal_symbol *msym; | |
3814 | ||
3815 | simple_free_overlay_region_table (); | |
9b27852e | 3816 | msym = lookup_minimal_symbol ("_novly_regions", NULL, NULL); |
c906108c SS |
3817 | if (msym != NULL) |
3818 | cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym), 4); | |
c5aa993b JM |
3819 | else |
3820 | return 0; /* failure */ | |
c906108c SS |
3821 | cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12); |
3822 | if (cache_ovly_region_table != NULL) | |
3823 | { | |
9b27852e | 3824 | msym = lookup_minimal_symbol ("_ovly_region_table", NULL, NULL); |
c906108c SS |
3825 | if (msym != NULL) |
3826 | { | |
3827 | cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym); | |
c5aa993b | 3828 | read_target_long_array (cache_ovly_region_table_base, |
777ea8f1 | 3829 | (unsigned int *) cache_ovly_region_table, |
c906108c SS |
3830 | cache_novly_regions * 3); |
3831 | } | |
c5aa993b JM |
3832 | else |
3833 | return 0; /* failure */ | |
c906108c | 3834 | } |
c5aa993b JM |
3835 | else |
3836 | return 0; /* failure */ | |
3837 | return 1; /* SUCCESS */ | |
c906108c SS |
3838 | } |
3839 | #endif | |
3840 | ||
5417f6dc | 3841 | /* Function: simple_overlay_update_1 |
c906108c SS |
3842 | A helper function for simple_overlay_update. Assuming a cached copy |
3843 | of _ovly_table exists, look through it to find an entry whose vma, | |
3844 | lma and size match those of OSECT. Re-read the entry and make sure | |
3845 | it still matches OSECT (else the table may no longer be valid). | |
3846 | Set OSECT's mapped state to match the entry. Return: 1 for | |
3847 | success, 0 for failure. */ | |
3848 | ||
3849 | static int | |
fba45db2 | 3850 | simple_overlay_update_1 (struct obj_section *osect) |
c906108c SS |
3851 | { |
3852 | int i, size; | |
fbd35540 MS |
3853 | bfd *obfd = osect->objfile->obfd; |
3854 | asection *bsect = osect->the_bfd_section; | |
c906108c | 3855 | |
2c500098 | 3856 | size = bfd_get_section_size (osect->the_bfd_section); |
c906108c | 3857 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3858 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3859 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3860 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3861 | { |
3862 | read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES, | |
777ea8f1 | 3863 | (unsigned int *) cache_ovly_table[i], 4); |
fbd35540 MS |
3864 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3865 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3866 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
c906108c SS |
3867 | { |
3868 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; | |
3869 | return 1; | |
3870 | } | |
fbd35540 | 3871 | else /* Warning! Warning! Target's ovly table has changed! */ |
c906108c SS |
3872 | return 0; |
3873 | } | |
3874 | return 0; | |
3875 | } | |
3876 | ||
3877 | /* Function: simple_overlay_update | |
5417f6dc RM |
3878 | If OSECT is NULL, then update all sections' mapped state |
3879 | (after re-reading the entire target _ovly_table). | |
3880 | If OSECT is non-NULL, then try to find a matching entry in the | |
c906108c | 3881 | cached ovly_table and update only OSECT's mapped state. |
5417f6dc | 3882 | If a cached entry can't be found or the cache isn't valid, then |
c906108c SS |
3883 | re-read the entire cache, and go ahead and update all sections. */ |
3884 | ||
1c772458 | 3885 | void |
fba45db2 | 3886 | simple_overlay_update (struct obj_section *osect) |
c906108c | 3887 | { |
c5aa993b | 3888 | struct objfile *objfile; |
c906108c SS |
3889 | |
3890 | /* Were we given an osect to look up? NULL means do all of them. */ | |
3891 | if (osect) | |
3892 | /* Have we got a cached copy of the target's overlay table? */ | |
3893 | if (cache_ovly_table != NULL) | |
3894 | /* Does its cached location match what's currently in the symtab? */ | |
c5aa993b | 3895 | if (cache_ovly_table_base == |
9b27852e | 3896 | SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))) |
c906108c SS |
3897 | /* Then go ahead and try to look up this single section in the cache */ |
3898 | if (simple_overlay_update_1 (osect)) | |
3899 | /* Found it! We're done. */ | |
3900 | return; | |
3901 | ||
3902 | /* Cached table no good: need to read the entire table anew. | |
3903 | Or else we want all the sections, in which case it's actually | |
3904 | more efficient to read the whole table in one block anyway. */ | |
3905 | ||
0d43edd1 JB |
3906 | if (! simple_read_overlay_table ()) |
3907 | return; | |
3908 | ||
c906108c SS |
3909 | /* Now may as well update all sections, even if only one was requested. */ |
3910 | ALL_OBJSECTIONS (objfile, osect) | |
3911 | if (section_is_overlay (osect->the_bfd_section)) | |
c5aa993b JM |
3912 | { |
3913 | int i, size; | |
fbd35540 MS |
3914 | bfd *obfd = osect->objfile->obfd; |
3915 | asection *bsect = osect->the_bfd_section; | |
c5aa993b | 3916 | |
2c500098 | 3917 | size = bfd_get_section_size (bsect); |
c5aa993b | 3918 | for (i = 0; i < cache_novlys; i++) |
fbd35540 MS |
3919 | if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect) |
3920 | && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect) | |
3921 | /* && cache_ovly_table[i][SIZE] == size */ ) | |
3922 | { /* obj_section matches i'th entry in ovly_table */ | |
c5aa993b JM |
3923 | osect->ovly_mapped = cache_ovly_table[i][MAPPED]; |
3924 | break; /* finished with inner for loop: break out */ | |
3925 | } | |
3926 | } | |
c906108c SS |
3927 | } |
3928 | ||
086df311 DJ |
3929 | /* Set the output sections and output offsets for section SECTP in |
3930 | ABFD. The relocation code in BFD will read these offsets, so we | |
3931 | need to be sure they're initialized. We map each section to itself, | |
3932 | with no offset; this means that SECTP->vma will be honored. */ | |
3933 | ||
3934 | static void | |
3935 | symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy) | |
3936 | { | |
3937 | sectp->output_section = sectp; | |
3938 | sectp->output_offset = 0; | |
3939 | } | |
3940 | ||
3941 | /* Relocate the contents of a debug section SECTP in ABFD. The | |
3942 | contents are stored in BUF if it is non-NULL, or returned in a | |
3943 | malloc'd buffer otherwise. | |
3944 | ||
3945 | For some platforms and debug info formats, shared libraries contain | |
3946 | relocations against the debug sections (particularly for DWARF-2; | |
3947 | one affected platform is PowerPC GNU/Linux, although it depends on | |
3948 | the version of the linker in use). Also, ELF object files naturally | |
3949 | have unresolved relocations for their debug sections. We need to apply | |
3950 | the relocations in order to get the locations of symbols correct. */ | |
3951 | ||
3952 | bfd_byte * | |
3953 | symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf) | |
3954 | { | |
3955 | /* We're only interested in debugging sections with relocation | |
3956 | information. */ | |
3957 | if ((sectp->flags & SEC_RELOC) == 0) | |
3958 | return NULL; | |
3959 | if ((sectp->flags & SEC_DEBUGGING) == 0) | |
3960 | return NULL; | |
3961 | ||
3962 | /* We will handle section offsets properly elsewhere, so relocate as if | |
3963 | all sections begin at 0. */ | |
3964 | bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL); | |
3965 | ||
97606a13 | 3966 | return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL); |
086df311 | 3967 | } |
c906108c | 3968 | |
31d99776 DJ |
3969 | struct symfile_segment_data * |
3970 | get_symfile_segment_data (bfd *abfd) | |
3971 | { | |
3972 | struct sym_fns *sf = find_sym_fns (abfd); | |
3973 | ||
3974 | if (sf == NULL) | |
3975 | return NULL; | |
3976 | ||
3977 | return sf->sym_segments (abfd); | |
3978 | } | |
3979 | ||
3980 | void | |
3981 | free_symfile_segment_data (struct symfile_segment_data *data) | |
3982 | { | |
3983 | xfree (data->segment_bases); | |
3984 | xfree (data->segment_sizes); | |
3985 | xfree (data->segment_info); | |
3986 | xfree (data); | |
3987 | } | |
3988 | ||
28c32713 JB |
3989 | |
3990 | /* Given: | |
3991 | - DATA, containing segment addresses from the object file ABFD, and | |
3992 | the mapping from ABFD's sections onto the segments that own them, | |
3993 | and | |
3994 | - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual | |
3995 | segment addresses reported by the target, | |
3996 | store the appropriate offsets for each section in OFFSETS. | |
3997 | ||
3998 | If there are fewer entries in SEGMENT_BASES than there are segments | |
3999 | in DATA, then apply SEGMENT_BASES' last entry to all the segments. | |
4000 | ||
8d385431 DJ |
4001 | If there are more entries, then ignore the extra. The target may |
4002 | not be able to distinguish between an empty data segment and a | |
4003 | missing data segment; a missing text segment is less plausible. */ | |
31d99776 DJ |
4004 | int |
4005 | symfile_map_offsets_to_segments (bfd *abfd, struct symfile_segment_data *data, | |
4006 | struct section_offsets *offsets, | |
4007 | int num_segment_bases, | |
4008 | const CORE_ADDR *segment_bases) | |
4009 | { | |
4010 | int i; | |
4011 | asection *sect; | |
4012 | ||
28c32713 JB |
4013 | /* It doesn't make sense to call this function unless you have some |
4014 | segment base addresses. */ | |
4015 | gdb_assert (segment_bases > 0); | |
4016 | ||
31d99776 DJ |
4017 | /* If we do not have segment mappings for the object file, we |
4018 | can not relocate it by segments. */ | |
4019 | gdb_assert (data != NULL); | |
4020 | gdb_assert (data->num_segments > 0); | |
4021 | ||
31d99776 DJ |
4022 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) |
4023 | { | |
31d99776 DJ |
4024 | int which = data->segment_info[i]; |
4025 | ||
28c32713 JB |
4026 | gdb_assert (0 <= which && which <= data->num_segments); |
4027 | ||
4028 | /* Don't bother computing offsets for sections that aren't | |
4029 | loaded as part of any segment. */ | |
4030 | if (! which) | |
4031 | continue; | |
4032 | ||
4033 | /* Use the last SEGMENT_BASES entry as the address of any extra | |
4034 | segments mentioned in DATA->segment_info. */ | |
31d99776 | 4035 | if (which > num_segment_bases) |
28c32713 | 4036 | which = num_segment_bases; |
31d99776 | 4037 | |
28c32713 JB |
4038 | offsets->offsets[i] = (segment_bases[which - 1] |
4039 | - data->segment_bases[which - 1]); | |
31d99776 DJ |
4040 | } |
4041 | ||
4042 | return 1; | |
4043 | } | |
4044 | ||
4045 | static void | |
4046 | symfile_find_segment_sections (struct objfile *objfile) | |
4047 | { | |
4048 | bfd *abfd = objfile->obfd; | |
4049 | int i; | |
4050 | asection *sect; | |
4051 | struct symfile_segment_data *data; | |
4052 | ||
4053 | data = get_symfile_segment_data (objfile->obfd); | |
4054 | if (data == NULL) | |
4055 | return; | |
4056 | ||
4057 | if (data->num_segments != 1 && data->num_segments != 2) | |
4058 | { | |
4059 | free_symfile_segment_data (data); | |
4060 | return; | |
4061 | } | |
4062 | ||
4063 | for (i = 0, sect = abfd->sections; sect != NULL; i++, sect = sect->next) | |
4064 | { | |
4065 | CORE_ADDR vma; | |
4066 | int which = data->segment_info[i]; | |
4067 | ||
4068 | if (which == 1) | |
4069 | { | |
4070 | if (objfile->sect_index_text == -1) | |
4071 | objfile->sect_index_text = sect->index; | |
4072 | ||
4073 | if (objfile->sect_index_rodata == -1) | |
4074 | objfile->sect_index_rodata = sect->index; | |
4075 | } | |
4076 | else if (which == 2) | |
4077 | { | |
4078 | if (objfile->sect_index_data == -1) | |
4079 | objfile->sect_index_data = sect->index; | |
4080 | ||
4081 | if (objfile->sect_index_bss == -1) | |
4082 | objfile->sect_index_bss = sect->index; | |
4083 | } | |
4084 | } | |
4085 | ||
4086 | free_symfile_segment_data (data); | |
4087 | } | |
4088 | ||
c906108c | 4089 | void |
fba45db2 | 4090 | _initialize_symfile (void) |
c906108c SS |
4091 | { |
4092 | struct cmd_list_element *c; | |
c5aa993b | 4093 | |
1a966eab AC |
4094 | c = add_cmd ("symbol-file", class_files, symbol_file_command, _("\ |
4095 | Load symbol table from executable file FILE.\n\ | |
c906108c | 4096 | The `file' command can also load symbol tables, as well as setting the file\n\ |
1a966eab | 4097 | to execute."), &cmdlist); |
5ba2abeb | 4098 | set_cmd_completer (c, filename_completer); |
c906108c | 4099 | |
1a966eab | 4100 | c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command, _("\ |
5b96932b | 4101 | Load symbols from FILE, assuming FILE has been dynamically loaded.\n\ |
1a966eab | 4102 | Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\ |
2acceee2 | 4103 | ADDR is the starting address of the file's text.\n\ |
db162d44 EZ |
4104 | The optional arguments are section-name section-address pairs and\n\ |
4105 | should be specified if the data and bss segments are not contiguous\n\ | |
1a966eab | 4106 | with the text. SECT is a section name to be loaded at SECT_ADDR."), |
c906108c | 4107 | &cmdlist); |
5ba2abeb | 4108 | set_cmd_completer (c, filename_completer); |
c906108c SS |
4109 | |
4110 | c = add_cmd ("add-shared-symbol-files", class_files, | |
1a966eab AC |
4111 | add_shared_symbol_files_command, _("\ |
4112 | Load the symbols from shared objects in the dynamic linker's link map."), | |
c5aa993b | 4113 | &cmdlist); |
c906108c SS |
4114 | c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1, |
4115 | &cmdlist); | |
4116 | ||
1a966eab AC |
4117 | c = add_cmd ("load", class_files, load_command, _("\ |
4118 | Dynamically load FILE into the running program, and record its symbols\n\ | |
1986bccd AS |
4119 | for access from GDB.\n\ |
4120 | A load OFFSET may also be given."), &cmdlist); | |
5ba2abeb | 4121 | set_cmd_completer (c, filename_completer); |
c906108c | 4122 | |
5bf193a2 AC |
4123 | add_setshow_boolean_cmd ("symbol-reloading", class_support, |
4124 | &symbol_reloading, _("\ | |
4125 | Set dynamic symbol table reloading multiple times in one run."), _("\ | |
4126 | Show dynamic symbol table reloading multiple times in one run."), NULL, | |
4127 | NULL, | |
920d2a44 | 4128 | show_symbol_reloading, |
5bf193a2 | 4129 | &setlist, &showlist); |
c906108c | 4130 | |
c5aa993b | 4131 | add_prefix_cmd ("overlay", class_support, overlay_command, |
1bedd215 | 4132 | _("Commands for debugging overlays."), &overlaylist, |
c906108c SS |
4133 | "overlay ", 0, &cmdlist); |
4134 | ||
4135 | add_com_alias ("ovly", "overlay", class_alias, 1); | |
4136 | add_com_alias ("ov", "overlay", class_alias, 1); | |
4137 | ||
c5aa993b | 4138 | add_cmd ("map-overlay", class_support, map_overlay_command, |
1a966eab | 4139 | _("Assert that an overlay section is mapped."), &overlaylist); |
c906108c | 4140 | |
c5aa993b | 4141 | add_cmd ("unmap-overlay", class_support, unmap_overlay_command, |
1a966eab | 4142 | _("Assert that an overlay section is unmapped."), &overlaylist); |
c906108c | 4143 | |
c5aa993b | 4144 | add_cmd ("list-overlays", class_support, list_overlays_command, |
1a966eab | 4145 | _("List mappings of overlay sections."), &overlaylist); |
c906108c | 4146 | |
c5aa993b | 4147 | add_cmd ("manual", class_support, overlay_manual_command, |
1a966eab | 4148 | _("Enable overlay debugging."), &overlaylist); |
c5aa993b | 4149 | add_cmd ("off", class_support, overlay_off_command, |
1a966eab | 4150 | _("Disable overlay debugging."), &overlaylist); |
c5aa993b | 4151 | add_cmd ("auto", class_support, overlay_auto_command, |
1a966eab | 4152 | _("Enable automatic overlay debugging."), &overlaylist); |
c5aa993b | 4153 | add_cmd ("load-target", class_support, overlay_load_command, |
1a966eab | 4154 | _("Read the overlay mapping state from the target."), &overlaylist); |
c906108c SS |
4155 | |
4156 | /* Filename extension to source language lookup table: */ | |
4157 | init_filename_language_table (); | |
26c41df3 AC |
4158 | add_setshow_string_noescape_cmd ("extension-language", class_files, |
4159 | &ext_args, _("\ | |
4160 | Set mapping between filename extension and source language."), _("\ | |
4161 | Show mapping between filename extension and source language."), _("\ | |
4162 | Usage: set extension-language .foo bar"), | |
4163 | set_ext_lang_command, | |
920d2a44 | 4164 | show_ext_args, |
26c41df3 | 4165 | &setlist, &showlist); |
c906108c | 4166 | |
c5aa993b | 4167 | add_info ("extensions", info_ext_lang_command, |
1bedd215 | 4168 | _("All filename extensions associated with a source language.")); |
917317f4 | 4169 | |
525226b5 AC |
4170 | add_setshow_optional_filename_cmd ("debug-file-directory", class_support, |
4171 | &debug_file_directory, _("\ | |
4172 | Set the directory where separate debug symbols are searched for."), _("\ | |
4173 | Show the directory where separate debug symbols are searched for."), _("\ | |
4174 | Separate debug symbols are first searched for in the same\n\ | |
4175 | directory as the binary, then in the `" DEBUG_SUBDIRECTORY "' subdirectory,\n\ | |
4176 | and lastly at the path of the directory of the binary with\n\ | |
4177 | the global debug-file directory prepended."), | |
4178 | NULL, | |
920d2a44 | 4179 | show_debug_file_directory, |
525226b5 | 4180 | &setlist, &showlist); |
bf250677 DE |
4181 | |
4182 | add_setshow_boolean_cmd ("symbol-loading", no_class, | |
4183 | &print_symbol_loading, _("\ | |
4184 | Set printing of symbol loading messages."), _("\ | |
4185 | Show printing of symbol loading messages."), NULL, | |
4186 | NULL, | |
4187 | NULL, | |
4188 | &setprintlist, &showprintlist); | |
c906108c | 4189 | } |