Commit | Line | Data |
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c906108c | 1 | /* GDB routines for manipulating objfiles. |
af5f3db6 AC |
2 | |
3 | Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, | |
b99607ea | 4 | 2001, 2002, 2003, 2004 Free Software Foundation, Inc. |
af5f3db6 | 5 | |
c906108c SS |
6 | Contributed by Cygnus Support, using pieces from other GDB modules. |
7 | ||
c5aa993b | 8 | This file is part of GDB. |
c906108c | 9 | |
c5aa993b JM |
10 | This program is free software; you can redistribute it and/or modify |
11 | it under the terms of the GNU General Public License as published by | |
12 | the Free Software Foundation; either version 2 of the License, or | |
13 | (at your option) any later version. | |
c906108c | 14 | |
c5aa993b JM |
15 | This program is distributed in the hope that it will be useful, |
16 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
18 | GNU General Public License for more details. | |
c906108c | 19 | |
c5aa993b JM |
20 | You should have received a copy of the GNU General Public License |
21 | along with this program; if not, write to the Free Software | |
22 | Foundation, Inc., 59 Temple Place - Suite 330, | |
23 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
24 | |
25 | /* This file contains support routines for creating, manipulating, and | |
26 | destroying objfile structures. */ | |
27 | ||
28 | #include "defs.h" | |
29 | #include "bfd.h" /* Binary File Description */ | |
30 | #include "symtab.h" | |
31 | #include "symfile.h" | |
32 | #include "objfiles.h" | |
33 | #include "gdb-stabs.h" | |
34 | #include "target.h" | |
af5f3db6 | 35 | #include "bcache.h" |
c906108c | 36 | |
0d0e1a63 | 37 | #include "gdb_assert.h" |
c906108c SS |
38 | #include <sys/types.h> |
39 | #include "gdb_stat.h" | |
40 | #include <fcntl.h> | |
04ea0df1 | 41 | #include "gdb_obstack.h" |
c906108c | 42 | #include "gdb_string.h" |
2de7ced7 | 43 | #include "hashtab.h" |
c906108c | 44 | |
7a292a7a | 45 | #include "breakpoint.h" |
fe898f56 | 46 | #include "block.h" |
de4f826b | 47 | #include "dictionary.h" |
7a292a7a | 48 | |
c906108c SS |
49 | /* Prototypes for local functions */ |
50 | ||
0d0e1a63 MK |
51 | static void objfile_alloc_data (struct objfile *objfile); |
52 | static void objfile_free_data (struct objfile *objfile); | |
53 | ||
c906108c SS |
54 | /* Externally visible variables that are owned by this module. |
55 | See declarations in objfile.h for more info. */ | |
56 | ||
c5aa993b | 57 | struct objfile *object_files; /* Linked list of all objfiles */ |
c906108c SS |
58 | struct objfile *current_objfile; /* For symbol file being read in */ |
59 | struct objfile *symfile_objfile; /* Main symbol table loaded from */ | |
60 | struct objfile *rt_common_objfile; /* For runtime common symbols */ | |
61 | ||
c906108c SS |
62 | /* Locate all mappable sections of a BFD file. |
63 | objfile_p_char is a char * to get it through | |
64 | bfd_map_over_sections; we cast it back to its proper type. */ | |
65 | ||
66 | #ifndef TARGET_KEEP_SECTION | |
67 | #define TARGET_KEEP_SECTION(ASECT) 0 | |
68 | #endif | |
69 | ||
96baa820 JM |
70 | /* Called via bfd_map_over_sections to build up the section table that |
71 | the objfile references. The objfile contains pointers to the start | |
72 | of the table (objfile->sections) and to the first location after | |
73 | the end of the table (objfile->sections_end). */ | |
74 | ||
c906108c | 75 | static void |
7be0c536 AC |
76 | add_to_objfile_sections (struct bfd *abfd, struct bfd_section *asect, |
77 | void *objfile_p_char) | |
c906108c SS |
78 | { |
79 | struct objfile *objfile = (struct objfile *) objfile_p_char; | |
80 | struct obj_section section; | |
81 | flagword aflag; | |
82 | ||
83 | aflag = bfd_get_section_flags (abfd, asect); | |
84 | ||
c5aa993b | 85 | if (!(aflag & SEC_ALLOC) && !(TARGET_KEEP_SECTION (asect))) |
c906108c SS |
86 | return; |
87 | ||
88 | if (0 == bfd_section_size (abfd, asect)) | |
89 | return; | |
90 | section.offset = 0; | |
91 | section.objfile = objfile; | |
92 | section.the_bfd_section = asect; | |
93 | section.ovly_mapped = 0; | |
94 | section.addr = bfd_section_vma (abfd, asect); | |
95 | section.endaddr = section.addr + bfd_section_size (abfd, asect); | |
8b92e4d5 | 96 | obstack_grow (&objfile->objfile_obstack, (char *) §ion, sizeof (section)); |
c906108c SS |
97 | objfile->sections_end = (struct obj_section *) (((unsigned long) objfile->sections_end) + 1); |
98 | } | |
99 | ||
100 | /* Builds a section table for OBJFILE. | |
101 | Returns 0 if OK, 1 on error (in which case bfd_error contains the | |
96baa820 JM |
102 | error). |
103 | ||
104 | Note that while we are building the table, which goes into the | |
105 | psymbol obstack, we hijack the sections_end pointer to instead hold | |
106 | a count of the number of sections. When bfd_map_over_sections | |
107 | returns, this count is used to compute the pointer to the end of | |
108 | the sections table, which then overwrites the count. | |
109 | ||
110 | Also note that the OFFSET and OVLY_MAPPED in each table entry | |
111 | are initialized to zero. | |
112 | ||
113 | Also note that if anything else writes to the psymbol obstack while | |
114 | we are building the table, we're pretty much hosed. */ | |
c906108c SS |
115 | |
116 | int | |
fba45db2 | 117 | build_objfile_section_table (struct objfile *objfile) |
c906108c SS |
118 | { |
119 | /* objfile->sections can be already set when reading a mapped symbol | |
120 | file. I believe that we do need to rebuild the section table in | |
121 | this case (we rebuild other things derived from the bfd), but we | |
8b92e4d5 | 122 | can't free the old one (it's in the objfile_obstack). So we just |
c906108c SS |
123 | waste some memory. */ |
124 | ||
125 | objfile->sections_end = 0; | |
c5aa993b | 126 | bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *) objfile); |
c906108c | 127 | objfile->sections = (struct obj_section *) |
8b92e4d5 | 128 | obstack_finish (&objfile->objfile_obstack); |
c906108c | 129 | objfile->sections_end = objfile->sections + (unsigned long) objfile->sections_end; |
c5aa993b | 130 | return (0); |
c906108c SS |
131 | } |
132 | ||
2df3850c JM |
133 | /* Given a pointer to an initialized bfd (ABFD) and some flag bits |
134 | allocate a new objfile struct, fill it in as best we can, link it | |
135 | into the list of all known objfiles, and return a pointer to the | |
136 | new objfile struct. | |
c906108c | 137 | |
2df3850c | 138 | The FLAGS word contains various bits (OBJF_*) that can be taken as |
78a4a9b9 AC |
139 | requests for specific operations. Other bits like OBJF_SHARED are |
140 | simply copied through to the new objfile flags member. */ | |
c906108c | 141 | |
eb9a305d DC |
142 | /* NOTE: carlton/2003-02-04: This function is called with args NULL, 0 |
143 | by jv-lang.c, to create an artificial objfile used to hold | |
144 | information about dynamically-loaded Java classes. Unfortunately, | |
145 | that branch of this function doesn't get tested very frequently, so | |
146 | it's prone to breakage. (E.g. at one time the name was set to NULL | |
147 | in that situation, which broke a loop over all names in the dynamic | |
148 | library loader.) If you change this function, please try to leave | |
149 | things in a consistent state even if abfd is NULL. */ | |
150 | ||
c906108c | 151 | struct objfile * |
fba45db2 | 152 | allocate_objfile (bfd *abfd, int flags) |
c906108c SS |
153 | { |
154 | struct objfile *objfile = NULL; | |
155 | struct objfile *last_one = NULL; | |
156 | ||
c906108c SS |
157 | /* If we don't support mapped symbol files, didn't ask for the file to be |
158 | mapped, or failed to open the mapped file for some reason, then revert | |
159 | back to an unmapped objfile. */ | |
160 | ||
161 | if (objfile == NULL) | |
162 | { | |
163 | objfile = (struct objfile *) xmalloc (sizeof (struct objfile)); | |
164 | memset (objfile, 0, sizeof (struct objfile)); | |
c5aa993b | 165 | objfile->md = NULL; |
af5f3db6 AC |
166 | objfile->psymbol_cache = bcache_xmalloc (); |
167 | objfile->macro_cache = bcache_xmalloc (); | |
1ab21617 EZ |
168 | /* We could use obstack_specify_allocation here instead, but |
169 | gdb_obstack.h specifies the alloc/dealloc functions. */ | |
170 | obstack_init (&objfile->objfile_obstack); | |
15831452 | 171 | terminate_minimal_symbol_table (objfile); |
c906108c SS |
172 | } |
173 | ||
0d0e1a63 MK |
174 | objfile_alloc_data (objfile); |
175 | ||
c906108c SS |
176 | /* Update the per-objfile information that comes from the bfd, ensuring |
177 | that any data that is reference is saved in the per-objfile data | |
178 | region. */ | |
179 | ||
c5aa993b JM |
180 | objfile->obfd = abfd; |
181 | if (objfile->name != NULL) | |
c906108c | 182 | { |
aac7f4ea | 183 | xmfree (objfile->md, objfile->name); |
c906108c SS |
184 | } |
185 | if (abfd != NULL) | |
186 | { | |
c5aa993b JM |
187 | objfile->name = mstrsave (objfile->md, bfd_get_filename (abfd)); |
188 | objfile->mtime = bfd_get_mtime (abfd); | |
c906108c SS |
189 | |
190 | /* Build section table. */ | |
191 | ||
192 | if (build_objfile_section_table (objfile)) | |
193 | { | |
c5aa993b JM |
194 | error ("Can't find the file sections in `%s': %s", |
195 | objfile->name, bfd_errmsg (bfd_get_error ())); | |
c906108c SS |
196 | } |
197 | } | |
eb9a305d DC |
198 | else |
199 | { | |
a9c0dc7f | 200 | objfile->name = mstrsave (objfile->md, "<<anonymous objfile>>"); |
eb9a305d | 201 | } |
c906108c | 202 | |
b8fbeb18 EZ |
203 | /* Initialize the section indexes for this objfile, so that we can |
204 | later detect if they are used w/o being properly assigned to. */ | |
205 | ||
5c4e30ca DC |
206 | objfile->sect_index_text = -1; |
207 | objfile->sect_index_data = -1; | |
208 | objfile->sect_index_bss = -1; | |
209 | objfile->sect_index_rodata = -1; | |
210 | ||
211 | /* We don't yet have a C++-specific namespace symtab. */ | |
212 | ||
213 | objfile->cp_namespace_symtab = NULL; | |
b8fbeb18 | 214 | |
c906108c SS |
215 | /* Add this file onto the tail of the linked list of other such files. */ |
216 | ||
c5aa993b | 217 | objfile->next = NULL; |
c906108c SS |
218 | if (object_files == NULL) |
219 | object_files = objfile; | |
220 | else | |
221 | { | |
222 | for (last_one = object_files; | |
c5aa993b JM |
223 | last_one->next; |
224 | last_one = last_one->next); | |
225 | last_one->next = objfile; | |
c906108c SS |
226 | } |
227 | ||
2df3850c JM |
228 | /* Save passed in flag bits. */ |
229 | objfile->flags |= flags; | |
c906108c SS |
230 | |
231 | return (objfile); | |
232 | } | |
233 | ||
9ab9195f EZ |
234 | /* Initialize entry point information for this objfile. */ |
235 | ||
236 | void | |
237 | init_entry_point_info (struct objfile *objfile) | |
238 | { | |
239 | /* Save startup file's range of PC addresses to help blockframe.c | |
240 | decide where the bottom of the stack is. */ | |
241 | ||
242 | if (bfd_get_file_flags (objfile->obfd) & EXEC_P) | |
243 | { | |
244 | /* Executable file -- record its entry point so we'll recognize | |
245 | the startup file because it contains the entry point. */ | |
246 | objfile->ei.entry_point = bfd_get_start_address (objfile->obfd); | |
247 | } | |
248 | else | |
249 | { | |
250 | /* Examination of non-executable.o files. Short-circuit this stuff. */ | |
251 | objfile->ei.entry_point = INVALID_ENTRY_POINT; | |
252 | } | |
253 | objfile->ei.deprecated_entry_file_lowpc = INVALID_ENTRY_LOWPC; | |
254 | objfile->ei.deprecated_entry_file_highpc = INVALID_ENTRY_HIGHPC; | |
255 | objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC; | |
256 | objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC; | |
257 | objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC; | |
258 | objfile->ei.main_func_highpc = INVALID_ENTRY_HIGHPC; | |
259 | } | |
260 | ||
261 | /* Get current entry point address. */ | |
262 | ||
263 | CORE_ADDR | |
264 | entry_point_address (void) | |
265 | { | |
266 | return symfile_objfile ? symfile_objfile->ei.entry_point : 0; | |
267 | } | |
15831452 JB |
268 | |
269 | /* Create the terminating entry of OBJFILE's minimal symbol table. | |
270 | If OBJFILE->msymbols is zero, allocate a single entry from | |
4a146b47 | 271 | OBJFILE->objfile_obstack; otherwise, just initialize |
15831452 JB |
272 | OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */ |
273 | void | |
274 | terminate_minimal_symbol_table (struct objfile *objfile) | |
275 | { | |
276 | if (! objfile->msymbols) | |
277 | objfile->msymbols = ((struct minimal_symbol *) | |
4a146b47 | 278 | obstack_alloc (&objfile->objfile_obstack, |
15831452 JB |
279 | sizeof (objfile->msymbols[0]))); |
280 | ||
281 | { | |
282 | struct minimal_symbol *m | |
283 | = &objfile->msymbols[objfile->minimal_symbol_count]; | |
284 | ||
285 | memset (m, 0, sizeof (*m)); | |
5bf0017e EZ |
286 | /* Don't rely on these enumeration values being 0's. */ |
287 | MSYMBOL_TYPE (m) = mst_unknown; | |
15831452 JB |
288 | SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown); |
289 | } | |
290 | } | |
291 | ||
292 | ||
5b5d99cf JB |
293 | /* Put one object file before a specified on in the global list. |
294 | This can be used to make sure an object file is destroyed before | |
295 | another when using ALL_OBJFILES_SAFE to free all objfiles. */ | |
296 | void | |
297 | put_objfile_before (struct objfile *objfile, struct objfile *before_this) | |
298 | { | |
299 | struct objfile **objp; | |
300 | ||
301 | unlink_objfile (objfile); | |
302 | ||
303 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
304 | { | |
305 | if (*objp == before_this) | |
306 | { | |
307 | objfile->next = *objp; | |
308 | *objp = objfile; | |
309 | return; | |
310 | } | |
311 | } | |
312 | ||
313 | internal_error (__FILE__, __LINE__, | |
314 | "put_objfile_before: before objfile not in list"); | |
315 | } | |
316 | ||
c906108c SS |
317 | /* Put OBJFILE at the front of the list. */ |
318 | ||
319 | void | |
fba45db2 | 320 | objfile_to_front (struct objfile *objfile) |
c906108c SS |
321 | { |
322 | struct objfile **objp; | |
323 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
324 | { | |
325 | if (*objp == objfile) | |
326 | { | |
327 | /* Unhook it from where it is. */ | |
328 | *objp = objfile->next; | |
329 | /* Put it in the front. */ | |
330 | objfile->next = object_files; | |
331 | object_files = objfile; | |
332 | break; | |
333 | } | |
334 | } | |
335 | } | |
336 | ||
337 | /* Unlink OBJFILE from the list of known objfiles, if it is found in the | |
338 | list. | |
339 | ||
340 | It is not a bug, or error, to call this function if OBJFILE is not known | |
341 | to be in the current list. This is done in the case of mapped objfiles, | |
342 | for example, just to ensure that the mapped objfile doesn't appear twice | |
343 | in the list. Since the list is threaded, linking in a mapped objfile | |
344 | twice would create a circular list. | |
345 | ||
346 | If OBJFILE turns out to be in the list, we zap it's NEXT pointer after | |
347 | unlinking it, just to ensure that we have completely severed any linkages | |
348 | between the OBJFILE and the list. */ | |
349 | ||
350 | void | |
fba45db2 | 351 | unlink_objfile (struct objfile *objfile) |
c906108c | 352 | { |
c5aa993b | 353 | struct objfile **objpp; |
c906108c | 354 | |
c5aa993b | 355 | for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next)) |
c906108c | 356 | { |
c5aa993b | 357 | if (*objpp == objfile) |
c906108c | 358 | { |
c5aa993b JM |
359 | *objpp = (*objpp)->next; |
360 | objfile->next = NULL; | |
07cd4b97 | 361 | return; |
c906108c SS |
362 | } |
363 | } | |
07cd4b97 | 364 | |
8e65ff28 AC |
365 | internal_error (__FILE__, __LINE__, |
366 | "unlink_objfile: objfile already unlinked"); | |
c906108c SS |
367 | } |
368 | ||
369 | ||
370 | /* Destroy an objfile and all the symtabs and psymtabs under it. Note | |
4a146b47 EZ |
371 | that as much as possible is allocated on the objfile_obstack |
372 | so that the memory can be efficiently freed. | |
c906108c SS |
373 | |
374 | Things which we do NOT free because they are not in malloc'd memory | |
375 | or not in memory specific to the objfile include: | |
376 | ||
c5aa993b | 377 | objfile -> sf |
c906108c SS |
378 | |
379 | FIXME: If the objfile is using reusable symbol information (via mmalloc), | |
380 | then we need to take into account the fact that more than one process | |
381 | may be using the symbol information at the same time (when mmalloc is | |
382 | extended to support cooperative locking). When more than one process | |
383 | is using the mapped symbol info, we need to be more careful about when | |
384 | we free objects in the reusable area. */ | |
385 | ||
386 | void | |
fba45db2 | 387 | free_objfile (struct objfile *objfile) |
c906108c | 388 | { |
5b5d99cf JB |
389 | if (objfile->separate_debug_objfile) |
390 | { | |
391 | free_objfile (objfile->separate_debug_objfile); | |
392 | } | |
393 | ||
394 | if (objfile->separate_debug_objfile_backlink) | |
395 | { | |
396 | /* We freed the separate debug file, make sure the base objfile | |
397 | doesn't reference it. */ | |
398 | objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL; | |
399 | } | |
400 | ||
c906108c SS |
401 | /* First do any symbol file specific actions required when we are |
402 | finished with a particular symbol file. Note that if the objfile | |
403 | is using reusable symbol information (via mmalloc) then each of | |
404 | these routines is responsible for doing the correct thing, either | |
405 | freeing things which are valid only during this particular gdb | |
406 | execution, or leaving them to be reused during the next one. */ | |
407 | ||
c5aa993b | 408 | if (objfile->sf != NULL) |
c906108c | 409 | { |
c5aa993b | 410 | (*objfile->sf->sym_finish) (objfile); |
c906108c SS |
411 | } |
412 | ||
413 | /* We always close the bfd. */ | |
414 | ||
c5aa993b | 415 | if (objfile->obfd != NULL) |
c906108c SS |
416 | { |
417 | char *name = bfd_get_filename (objfile->obfd); | |
c5aa993b | 418 | if (!bfd_close (objfile->obfd)) |
c906108c SS |
419 | warning ("cannot close \"%s\": %s", |
420 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 421 | xfree (name); |
c906108c SS |
422 | } |
423 | ||
424 | /* Remove it from the chain of all objfiles. */ | |
425 | ||
426 | unlink_objfile (objfile); | |
427 | ||
428 | /* If we are going to free the runtime common objfile, mark it | |
429 | as unallocated. */ | |
430 | ||
431 | if (objfile == rt_common_objfile) | |
432 | rt_common_objfile = NULL; | |
433 | ||
434 | /* Before the symbol table code was redone to make it easier to | |
435 | selectively load and remove information particular to a specific | |
436 | linkage unit, gdb used to do these things whenever the monolithic | |
437 | symbol table was blown away. How much still needs to be done | |
438 | is unknown, but we play it safe for now and keep each action until | |
439 | it is shown to be no longer needed. */ | |
c5aa993b | 440 | |
c906108c SS |
441 | /* I *think* all our callers call clear_symtab_users. If so, no need |
442 | to call this here. */ | |
443 | clear_pc_function_cache (); | |
444 | ||
78a4a9b9 | 445 | /* The last thing we do is free the objfile struct itself. */ |
c906108c | 446 | |
78a4a9b9 AC |
447 | objfile_free_data (objfile); |
448 | if (objfile->name != NULL) | |
c906108c | 449 | { |
78a4a9b9 | 450 | xmfree (objfile->md, objfile->name); |
c906108c | 451 | } |
78a4a9b9 AC |
452 | if (objfile->global_psymbols.list) |
453 | xmfree (objfile->md, objfile->global_psymbols.list); | |
454 | if (objfile->static_psymbols.list) | |
455 | xmfree (objfile->md, objfile->static_psymbols.list); | |
456 | /* Free the obstacks for non-reusable objfiles */ | |
457 | bcache_xfree (objfile->psymbol_cache); | |
458 | bcache_xfree (objfile->macro_cache); | |
459 | if (objfile->demangled_names_hash) | |
460 | htab_delete (objfile->demangled_names_hash); | |
b99607ea | 461 | obstack_free (&objfile->objfile_obstack, 0); |
78a4a9b9 AC |
462 | xmfree (objfile->md, objfile); |
463 | objfile = NULL; | |
c906108c SS |
464 | } |
465 | ||
74b7792f AC |
466 | static void |
467 | do_free_objfile_cleanup (void *obj) | |
468 | { | |
469 | free_objfile (obj); | |
470 | } | |
471 | ||
472 | struct cleanup * | |
473 | make_cleanup_free_objfile (struct objfile *obj) | |
474 | { | |
475 | return make_cleanup (do_free_objfile_cleanup, obj); | |
476 | } | |
c906108c SS |
477 | |
478 | /* Free all the object files at once and clean up their users. */ | |
479 | ||
480 | void | |
fba45db2 | 481 | free_all_objfiles (void) |
c906108c SS |
482 | { |
483 | struct objfile *objfile, *temp; | |
484 | ||
485 | ALL_OBJFILES_SAFE (objfile, temp) | |
c5aa993b JM |
486 | { |
487 | free_objfile (objfile); | |
488 | } | |
c906108c SS |
489 | clear_symtab_users (); |
490 | } | |
491 | \f | |
492 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS | |
493 | entries in new_offsets. */ | |
494 | void | |
fba45db2 | 495 | objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets) |
c906108c | 496 | { |
d4f3574e | 497 | struct section_offsets *delta = |
a39a16c4 MM |
498 | ((struct section_offsets *) |
499 | alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections))); | |
c906108c SS |
500 | |
501 | { | |
502 | int i; | |
503 | int something_changed = 0; | |
504 | for (i = 0; i < objfile->num_sections; ++i) | |
505 | { | |
a4c8257b | 506 | delta->offsets[i] = |
c906108c SS |
507 | ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i); |
508 | if (ANOFFSET (delta, i) != 0) | |
509 | something_changed = 1; | |
510 | } | |
511 | if (!something_changed) | |
512 | return; | |
513 | } | |
514 | ||
515 | /* OK, get all the symtabs. */ | |
516 | { | |
517 | struct symtab *s; | |
518 | ||
519 | ALL_OBJFILE_SYMTABS (objfile, s) | |
c5aa993b JM |
520 | { |
521 | struct linetable *l; | |
522 | struct blockvector *bv; | |
523 | int i; | |
524 | ||
525 | /* First the line table. */ | |
526 | l = LINETABLE (s); | |
527 | if (l) | |
528 | { | |
529 | for (i = 0; i < l->nitems; ++i) | |
530 | l->item[i].pc += ANOFFSET (delta, s->block_line_section); | |
531 | } | |
c906108c | 532 | |
c5aa993b JM |
533 | /* Don't relocate a shared blockvector more than once. */ |
534 | if (!s->primary) | |
535 | continue; | |
c906108c | 536 | |
c5aa993b JM |
537 | bv = BLOCKVECTOR (s); |
538 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i) | |
539 | { | |
540 | struct block *b; | |
e88c90f2 | 541 | struct symbol *sym; |
de4f826b | 542 | struct dict_iterator iter; |
c5aa993b JM |
543 | |
544 | b = BLOCKVECTOR_BLOCK (bv, i); | |
545 | BLOCK_START (b) += ANOFFSET (delta, s->block_line_section); | |
546 | BLOCK_END (b) += ANOFFSET (delta, s->block_line_section); | |
547 | ||
de4f826b | 548 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 549 | { |
7a78d0ee KB |
550 | fixup_symbol_section (sym, objfile); |
551 | ||
c5aa993b | 552 | /* The RS6000 code from which this was taken skipped |
176620f1 | 553 | any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN. |
c5aa993b JM |
554 | But I'm leaving out that test, on the theory that |
555 | they can't possibly pass the tests below. */ | |
556 | if ((SYMBOL_CLASS (sym) == LOC_LABEL | |
557 | || SYMBOL_CLASS (sym) == LOC_STATIC | |
558 | || SYMBOL_CLASS (sym) == LOC_INDIRECT) | |
559 | && SYMBOL_SECTION (sym) >= 0) | |
560 | { | |
561 | SYMBOL_VALUE_ADDRESS (sym) += | |
562 | ANOFFSET (delta, SYMBOL_SECTION (sym)); | |
563 | } | |
c906108c | 564 | #ifdef MIPS_EFI_SYMBOL_NAME |
c5aa993b | 565 | /* Relocate Extra Function Info for ecoff. */ |
c906108c | 566 | |
c5aa993b | 567 | else if (SYMBOL_CLASS (sym) == LOC_CONST |
176620f1 | 568 | && SYMBOL_DOMAIN (sym) == LABEL_DOMAIN |
22abf04a | 569 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0) |
c5aa993b | 570 | ecoff_relocate_efi (sym, ANOFFSET (delta, |
c906108c SS |
571 | s->block_line_section)); |
572 | #endif | |
c5aa993b JM |
573 | } |
574 | } | |
575 | } | |
c906108c SS |
576 | } |
577 | ||
578 | { | |
579 | struct partial_symtab *p; | |
580 | ||
581 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
c5aa993b | 582 | { |
b8fbeb18 EZ |
583 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
584 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c5aa993b | 585 | } |
c906108c SS |
586 | } |
587 | ||
588 | { | |
589 | struct partial_symbol **psym; | |
590 | ||
591 | for (psym = objfile->global_psymbols.list; | |
592 | psym < objfile->global_psymbols.next; | |
593 | psym++) | |
7a78d0ee KB |
594 | { |
595 | fixup_psymbol_section (*psym, objfile); | |
596 | if (SYMBOL_SECTION (*psym) >= 0) | |
597 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
598 | SYMBOL_SECTION (*psym)); | |
599 | } | |
c906108c SS |
600 | for (psym = objfile->static_psymbols.list; |
601 | psym < objfile->static_psymbols.next; | |
602 | psym++) | |
7a78d0ee KB |
603 | { |
604 | fixup_psymbol_section (*psym, objfile); | |
605 | if (SYMBOL_SECTION (*psym) >= 0) | |
606 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
607 | SYMBOL_SECTION (*psym)); | |
608 | } | |
c906108c SS |
609 | } |
610 | ||
611 | { | |
612 | struct minimal_symbol *msym; | |
613 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
614 | if (SYMBOL_SECTION (msym) >= 0) | |
c5aa993b | 615 | SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym)); |
c906108c SS |
616 | } |
617 | /* Relocating different sections by different amounts may cause the symbols | |
618 | to be out of order. */ | |
619 | msymbols_sort (objfile); | |
620 | ||
621 | { | |
622 | int i; | |
623 | for (i = 0; i < objfile->num_sections; ++i) | |
a4c8257b | 624 | (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i); |
c906108c SS |
625 | } |
626 | ||
36b0c0e0 PS |
627 | if (objfile->ei.entry_point != ~(CORE_ADDR) 0) |
628 | { | |
629 | /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT | |
630 | only as a fallback. */ | |
631 | struct obj_section *s; | |
632 | s = find_pc_section (objfile->ei.entry_point); | |
633 | if (s) | |
634 | objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index); | |
635 | else | |
636 | objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
637 | } | |
638 | ||
c906108c SS |
639 | { |
640 | struct obj_section *s; | |
641 | bfd *abfd; | |
642 | ||
643 | abfd = objfile->obfd; | |
644 | ||
96baa820 | 645 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 646 | { |
78f0949b KB |
647 | int idx = s->the_bfd_section->index; |
648 | ||
649 | s->addr += ANOFFSET (delta, idx); | |
650 | s->endaddr += ANOFFSET (delta, idx); | |
c906108c SS |
651 | } |
652 | } | |
653 | ||
c906108c SS |
654 | if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC) |
655 | { | |
b8fbeb18 EZ |
656 | objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
657 | objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
658 | } |
659 | ||
627b3ba2 | 660 | if (objfile->ei.deprecated_entry_file_lowpc != INVALID_ENTRY_LOWPC) |
c906108c | 661 | { |
627b3ba2 AC |
662 | objfile->ei.deprecated_entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
663 | objfile->ei.deprecated_entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
664 | } |
665 | ||
666 | if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC) | |
667 | { | |
b8fbeb18 EZ |
668 | objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
669 | objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
670 | } |
671 | ||
672 | /* Relocate breakpoints as necessary, after things are relocated. */ | |
673 | breakpoint_re_set (); | |
674 | } | |
675 | \f | |
676 | /* Many places in gdb want to test just to see if we have any partial | |
677 | symbols available. This function returns zero if none are currently | |
678 | available, nonzero otherwise. */ | |
679 | ||
680 | int | |
fba45db2 | 681 | have_partial_symbols (void) |
c906108c SS |
682 | { |
683 | struct objfile *ofp; | |
684 | ||
685 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
686 | { |
687 | if (ofp->psymtabs != NULL) | |
688 | { | |
689 | return 1; | |
690 | } | |
691 | } | |
c906108c SS |
692 | return 0; |
693 | } | |
694 | ||
695 | /* Many places in gdb want to test just to see if we have any full | |
696 | symbols available. This function returns zero if none are currently | |
697 | available, nonzero otherwise. */ | |
698 | ||
699 | int | |
fba45db2 | 700 | have_full_symbols (void) |
c906108c SS |
701 | { |
702 | struct objfile *ofp; | |
703 | ||
704 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
705 | { |
706 | if (ofp->symtabs != NULL) | |
707 | { | |
708 | return 1; | |
709 | } | |
710 | } | |
c906108c SS |
711 | return 0; |
712 | } | |
713 | ||
714 | ||
715 | /* This operations deletes all objfile entries that represent solibs that | |
716 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
717 | command. | |
c5aa993b | 718 | */ |
c906108c | 719 | void |
fba45db2 | 720 | objfile_purge_solibs (void) |
c906108c | 721 | { |
c5aa993b JM |
722 | struct objfile *objf; |
723 | struct objfile *temp; | |
c906108c SS |
724 | |
725 | ALL_OBJFILES_SAFE (objf, temp) | |
726 | { | |
727 | /* We assume that the solib package has been purged already, or will | |
728 | be soon. | |
c5aa993b | 729 | */ |
2df3850c | 730 | if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED)) |
c906108c SS |
731 | free_objfile (objf); |
732 | } | |
733 | } | |
734 | ||
735 | ||
736 | /* Many places in gdb want to test just to see if we have any minimal | |
737 | symbols available. This function returns zero if none are currently | |
738 | available, nonzero otherwise. */ | |
739 | ||
740 | int | |
fba45db2 | 741 | have_minimal_symbols (void) |
c906108c SS |
742 | { |
743 | struct objfile *ofp; | |
744 | ||
745 | ALL_OBJFILES (ofp) | |
c5aa993b | 746 | { |
15831452 | 747 | if (ofp->minimal_symbol_count > 0) |
c5aa993b JM |
748 | { |
749 | return 1; | |
750 | } | |
751 | } | |
c906108c SS |
752 | return 0; |
753 | } | |
754 | ||
198beae2 AC |
755 | /* Returns a section whose range includes PC and SECTION, or NULL if |
756 | none found. Note the distinction between the return type, struct | |
757 | obj_section (which is defined in gdb), and the input type "struct | |
758 | bfd_section" (which is a bfd-defined data type). The obj_section | |
759 | contains a pointer to the "struct bfd_section". */ | |
c906108c SS |
760 | |
761 | struct obj_section * | |
198beae2 | 762 | find_pc_sect_section (CORE_ADDR pc, struct bfd_section *section) |
c906108c SS |
763 | { |
764 | struct obj_section *s; | |
765 | struct objfile *objfile; | |
c5aa993b | 766 | |
96baa820 | 767 | ALL_OBJSECTIONS (objfile, s) |
c5aa993b JM |
768 | if ((section == 0 || section == s->the_bfd_section) && |
769 | s->addr <= pc && pc < s->endaddr) | |
c5aa993b | 770 | return (s); |
c906108c | 771 | |
c5aa993b | 772 | return (NULL); |
c906108c SS |
773 | } |
774 | ||
775 | /* Returns a section whose range includes PC or NULL if none found. | |
776 | Backward compatibility, no section. */ | |
777 | ||
778 | struct obj_section * | |
fba45db2 | 779 | find_pc_section (CORE_ADDR pc) |
c906108c SS |
780 | { |
781 | return find_pc_sect_section (pc, find_pc_mapped_section (pc)); | |
782 | } | |
c5aa993b | 783 | |
c906108c SS |
784 | |
785 | /* In SVR4, we recognize a trampoline by it's section name. | |
786 | That is, if the pc is in a section named ".plt" then we are in | |
787 | a trampoline. */ | |
788 | ||
789 | int | |
fba45db2 | 790 | in_plt_section (CORE_ADDR pc, char *name) |
c906108c SS |
791 | { |
792 | struct obj_section *s; | |
793 | int retval = 0; | |
c5aa993b JM |
794 | |
795 | s = find_pc_section (pc); | |
796 | ||
c906108c SS |
797 | retval = (s != NULL |
798 | && s->the_bfd_section->name != NULL | |
6314a349 | 799 | && strcmp (s->the_bfd_section->name, ".plt") == 0); |
c5aa993b | 800 | return (retval); |
c906108c | 801 | } |
7be570e7 JM |
802 | |
803 | /* Return nonzero if NAME is in the import list of OBJFILE. Else | |
804 | return zero. */ | |
805 | ||
806 | int | |
fba45db2 | 807 | is_in_import_list (char *name, struct objfile *objfile) |
7be570e7 | 808 | { |
52f0bd74 | 809 | int i; |
7be570e7 JM |
810 | |
811 | if (!objfile || !name || !*name) | |
812 | return 0; | |
813 | ||
814 | for (i = 0; i < objfile->import_list_size; i++) | |
cb137aa5 | 815 | if (objfile->import_list[i] && DEPRECATED_STREQ (name, objfile->import_list[i])) |
7be570e7 JM |
816 | return 1; |
817 | return 0; | |
818 | } | |
0d0e1a63 MK |
819 | \f |
820 | ||
821 | /* Keep a registry of per-objfile data-pointers required by other GDB | |
822 | modules. */ | |
823 | ||
824 | struct objfile_data | |
825 | { | |
826 | unsigned index; | |
827 | }; | |
828 | ||
829 | struct objfile_data_registration | |
830 | { | |
831 | struct objfile_data *data; | |
832 | struct objfile_data_registration *next; | |
833 | }; | |
834 | ||
835 | struct objfile_data_registry | |
836 | { | |
837 | struct objfile_data_registration *registrations; | |
838 | unsigned num_registrations; | |
839 | }; | |
840 | ||
841 | static struct objfile_data_registry objfile_data_registry = { NULL, 0 }; | |
842 | ||
843 | const struct objfile_data * | |
844 | register_objfile_data (void) | |
845 | { | |
846 | struct objfile_data_registration **curr; | |
847 | ||
848 | /* Append new registration. */ | |
849 | for (curr = &objfile_data_registry.registrations; | |
850 | *curr != NULL; curr = &(*curr)->next); | |
7be570e7 | 851 | |
0d0e1a63 MK |
852 | *curr = XMALLOC (struct objfile_data_registration); |
853 | (*curr)->next = NULL; | |
854 | (*curr)->data = XMALLOC (struct objfile_data); | |
855 | (*curr)->data->index = objfile_data_registry.num_registrations++; | |
856 | ||
857 | return (*curr)->data; | |
858 | } | |
859 | ||
860 | static void | |
861 | objfile_alloc_data (struct objfile *objfile) | |
862 | { | |
863 | gdb_assert (objfile->data == NULL); | |
864 | objfile->num_data = objfile_data_registry.num_registrations; | |
865 | objfile->data = XCALLOC (objfile->num_data, void *); | |
866 | } | |
867 | ||
868 | static void | |
869 | objfile_free_data (struct objfile *objfile) | |
870 | { | |
871 | gdb_assert (objfile->data != NULL); | |
872 | xfree (objfile->data); | |
873 | objfile->data = NULL; | |
874 | } | |
875 | ||
7b097ae3 MK |
876 | void |
877 | clear_objfile_data (struct objfile *objfile) | |
878 | { | |
879 | gdb_assert (objfile->data != NULL); | |
880 | memset (objfile->data, 0, objfile->num_data * sizeof (void *)); | |
881 | } | |
882 | ||
0d0e1a63 MK |
883 | void |
884 | set_objfile_data (struct objfile *objfile, const struct objfile_data *data, | |
885 | void *value) | |
886 | { | |
887 | gdb_assert (data->index < objfile->num_data); | |
888 | objfile->data[data->index] = value; | |
889 | } | |
890 | ||
891 | void * | |
892 | objfile_data (struct objfile *objfile, const struct objfile_data *data) | |
893 | { | |
894 | gdb_assert (data->index < objfile->num_data); | |
895 | return objfile->data[data->index]; | |
896 | } |