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)); | |
22abf04a | 286 | DEPRECATED_SYMBOL_NAME (m) = NULL; |
15831452 JB |
287 | SYMBOL_VALUE_ADDRESS (m) = 0; |
288 | MSYMBOL_INFO (m) = NULL; | |
f594e5e9 | 289 | MSYMBOL_SIZE (m) = 0; |
15831452 JB |
290 | MSYMBOL_TYPE (m) = mst_unknown; |
291 | SYMBOL_INIT_LANGUAGE_SPECIFIC (m, language_unknown); | |
292 | } | |
293 | } | |
294 | ||
295 | ||
5b5d99cf JB |
296 | /* Put one object file before a specified on in the global list. |
297 | This can be used to make sure an object file is destroyed before | |
298 | another when using ALL_OBJFILES_SAFE to free all objfiles. */ | |
299 | void | |
300 | put_objfile_before (struct objfile *objfile, struct objfile *before_this) | |
301 | { | |
302 | struct objfile **objp; | |
303 | ||
304 | unlink_objfile (objfile); | |
305 | ||
306 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
307 | { | |
308 | if (*objp == before_this) | |
309 | { | |
310 | objfile->next = *objp; | |
311 | *objp = objfile; | |
312 | return; | |
313 | } | |
314 | } | |
315 | ||
316 | internal_error (__FILE__, __LINE__, | |
317 | "put_objfile_before: before objfile not in list"); | |
318 | } | |
319 | ||
c906108c SS |
320 | /* Put OBJFILE at the front of the list. */ |
321 | ||
322 | void | |
fba45db2 | 323 | objfile_to_front (struct objfile *objfile) |
c906108c SS |
324 | { |
325 | struct objfile **objp; | |
326 | for (objp = &object_files; *objp != NULL; objp = &((*objp)->next)) | |
327 | { | |
328 | if (*objp == objfile) | |
329 | { | |
330 | /* Unhook it from where it is. */ | |
331 | *objp = objfile->next; | |
332 | /* Put it in the front. */ | |
333 | objfile->next = object_files; | |
334 | object_files = objfile; | |
335 | break; | |
336 | } | |
337 | } | |
338 | } | |
339 | ||
340 | /* Unlink OBJFILE from the list of known objfiles, if it is found in the | |
341 | list. | |
342 | ||
343 | It is not a bug, or error, to call this function if OBJFILE is not known | |
344 | to be in the current list. This is done in the case of mapped objfiles, | |
345 | for example, just to ensure that the mapped objfile doesn't appear twice | |
346 | in the list. Since the list is threaded, linking in a mapped objfile | |
347 | twice would create a circular list. | |
348 | ||
349 | If OBJFILE turns out to be in the list, we zap it's NEXT pointer after | |
350 | unlinking it, just to ensure that we have completely severed any linkages | |
351 | between the OBJFILE and the list. */ | |
352 | ||
353 | void | |
fba45db2 | 354 | unlink_objfile (struct objfile *objfile) |
c906108c | 355 | { |
c5aa993b | 356 | struct objfile **objpp; |
c906108c | 357 | |
c5aa993b | 358 | for (objpp = &object_files; *objpp != NULL; objpp = &((*objpp)->next)) |
c906108c | 359 | { |
c5aa993b | 360 | if (*objpp == objfile) |
c906108c | 361 | { |
c5aa993b JM |
362 | *objpp = (*objpp)->next; |
363 | objfile->next = NULL; | |
07cd4b97 | 364 | return; |
c906108c SS |
365 | } |
366 | } | |
07cd4b97 | 367 | |
8e65ff28 AC |
368 | internal_error (__FILE__, __LINE__, |
369 | "unlink_objfile: objfile already unlinked"); | |
c906108c SS |
370 | } |
371 | ||
372 | ||
373 | /* Destroy an objfile and all the symtabs and psymtabs under it. Note | |
4a146b47 EZ |
374 | that as much as possible is allocated on the objfile_obstack |
375 | so that the memory can be efficiently freed. | |
c906108c SS |
376 | |
377 | Things which we do NOT free because they are not in malloc'd memory | |
378 | or not in memory specific to the objfile include: | |
379 | ||
c5aa993b | 380 | objfile -> sf |
c906108c SS |
381 | |
382 | FIXME: If the objfile is using reusable symbol information (via mmalloc), | |
383 | then we need to take into account the fact that more than one process | |
384 | may be using the symbol information at the same time (when mmalloc is | |
385 | extended to support cooperative locking). When more than one process | |
386 | is using the mapped symbol info, we need to be more careful about when | |
387 | we free objects in the reusable area. */ | |
388 | ||
389 | void | |
fba45db2 | 390 | free_objfile (struct objfile *objfile) |
c906108c | 391 | { |
5b5d99cf JB |
392 | if (objfile->separate_debug_objfile) |
393 | { | |
394 | free_objfile (objfile->separate_debug_objfile); | |
395 | } | |
396 | ||
397 | if (objfile->separate_debug_objfile_backlink) | |
398 | { | |
399 | /* We freed the separate debug file, make sure the base objfile | |
400 | doesn't reference it. */ | |
401 | objfile->separate_debug_objfile_backlink->separate_debug_objfile = NULL; | |
402 | } | |
403 | ||
c906108c SS |
404 | /* First do any symbol file specific actions required when we are |
405 | finished with a particular symbol file. Note that if the objfile | |
406 | is using reusable symbol information (via mmalloc) then each of | |
407 | these routines is responsible for doing the correct thing, either | |
408 | freeing things which are valid only during this particular gdb | |
409 | execution, or leaving them to be reused during the next one. */ | |
410 | ||
c5aa993b | 411 | if (objfile->sf != NULL) |
c906108c | 412 | { |
c5aa993b | 413 | (*objfile->sf->sym_finish) (objfile); |
c906108c SS |
414 | } |
415 | ||
416 | /* We always close the bfd. */ | |
417 | ||
c5aa993b | 418 | if (objfile->obfd != NULL) |
c906108c SS |
419 | { |
420 | char *name = bfd_get_filename (objfile->obfd); | |
c5aa993b | 421 | if (!bfd_close (objfile->obfd)) |
c906108c SS |
422 | warning ("cannot close \"%s\": %s", |
423 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 424 | xfree (name); |
c906108c SS |
425 | } |
426 | ||
427 | /* Remove it from the chain of all objfiles. */ | |
428 | ||
429 | unlink_objfile (objfile); | |
430 | ||
431 | /* If we are going to free the runtime common objfile, mark it | |
432 | as unallocated. */ | |
433 | ||
434 | if (objfile == rt_common_objfile) | |
435 | rt_common_objfile = NULL; | |
436 | ||
437 | /* Before the symbol table code was redone to make it easier to | |
438 | selectively load and remove information particular to a specific | |
439 | linkage unit, gdb used to do these things whenever the monolithic | |
440 | symbol table was blown away. How much still needs to be done | |
441 | is unknown, but we play it safe for now and keep each action until | |
442 | it is shown to be no longer needed. */ | |
c5aa993b | 443 | |
c906108c SS |
444 | /* I *think* all our callers call clear_symtab_users. If so, no need |
445 | to call this here. */ | |
446 | clear_pc_function_cache (); | |
447 | ||
78a4a9b9 | 448 | /* The last thing we do is free the objfile struct itself. */ |
c906108c | 449 | |
78a4a9b9 AC |
450 | objfile_free_data (objfile); |
451 | if (objfile->name != NULL) | |
c906108c | 452 | { |
78a4a9b9 | 453 | xmfree (objfile->md, objfile->name); |
c906108c | 454 | } |
78a4a9b9 AC |
455 | if (objfile->global_psymbols.list) |
456 | xmfree (objfile->md, objfile->global_psymbols.list); | |
457 | if (objfile->static_psymbols.list) | |
458 | xmfree (objfile->md, objfile->static_psymbols.list); | |
459 | /* Free the obstacks for non-reusable objfiles */ | |
460 | bcache_xfree (objfile->psymbol_cache); | |
461 | bcache_xfree (objfile->macro_cache); | |
462 | if (objfile->demangled_names_hash) | |
463 | htab_delete (objfile->demangled_names_hash); | |
b99607ea | 464 | obstack_free (&objfile->objfile_obstack, 0); |
78a4a9b9 AC |
465 | xmfree (objfile->md, objfile); |
466 | objfile = NULL; | |
c906108c SS |
467 | } |
468 | ||
74b7792f AC |
469 | static void |
470 | do_free_objfile_cleanup (void *obj) | |
471 | { | |
472 | free_objfile (obj); | |
473 | } | |
474 | ||
475 | struct cleanup * | |
476 | make_cleanup_free_objfile (struct objfile *obj) | |
477 | { | |
478 | return make_cleanup (do_free_objfile_cleanup, obj); | |
479 | } | |
c906108c SS |
480 | |
481 | /* Free all the object files at once and clean up their users. */ | |
482 | ||
483 | void | |
fba45db2 | 484 | free_all_objfiles (void) |
c906108c SS |
485 | { |
486 | struct objfile *objfile, *temp; | |
487 | ||
488 | ALL_OBJFILES_SAFE (objfile, temp) | |
c5aa993b JM |
489 | { |
490 | free_objfile (objfile); | |
491 | } | |
c906108c SS |
492 | clear_symtab_users (); |
493 | } | |
494 | \f | |
495 | /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS | |
496 | entries in new_offsets. */ | |
497 | void | |
fba45db2 | 498 | objfile_relocate (struct objfile *objfile, struct section_offsets *new_offsets) |
c906108c | 499 | { |
d4f3574e | 500 | struct section_offsets *delta = |
a39a16c4 MM |
501 | ((struct section_offsets *) |
502 | alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections))); | |
c906108c SS |
503 | |
504 | { | |
505 | int i; | |
506 | int something_changed = 0; | |
507 | for (i = 0; i < objfile->num_sections; ++i) | |
508 | { | |
a4c8257b | 509 | delta->offsets[i] = |
c906108c SS |
510 | ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i); |
511 | if (ANOFFSET (delta, i) != 0) | |
512 | something_changed = 1; | |
513 | } | |
514 | if (!something_changed) | |
515 | return; | |
516 | } | |
517 | ||
518 | /* OK, get all the symtabs. */ | |
519 | { | |
520 | struct symtab *s; | |
521 | ||
522 | ALL_OBJFILE_SYMTABS (objfile, s) | |
c5aa993b JM |
523 | { |
524 | struct linetable *l; | |
525 | struct blockvector *bv; | |
526 | int i; | |
527 | ||
528 | /* First the line table. */ | |
529 | l = LINETABLE (s); | |
530 | if (l) | |
531 | { | |
532 | for (i = 0; i < l->nitems; ++i) | |
533 | l->item[i].pc += ANOFFSET (delta, s->block_line_section); | |
534 | } | |
c906108c | 535 | |
c5aa993b JM |
536 | /* Don't relocate a shared blockvector more than once. */ |
537 | if (!s->primary) | |
538 | continue; | |
c906108c | 539 | |
c5aa993b JM |
540 | bv = BLOCKVECTOR (s); |
541 | for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i) | |
542 | { | |
543 | struct block *b; | |
e88c90f2 | 544 | struct symbol *sym; |
de4f826b | 545 | struct dict_iterator iter; |
c5aa993b JM |
546 | |
547 | b = BLOCKVECTOR_BLOCK (bv, i); | |
548 | BLOCK_START (b) += ANOFFSET (delta, s->block_line_section); | |
549 | BLOCK_END (b) += ANOFFSET (delta, s->block_line_section); | |
550 | ||
de4f826b | 551 | ALL_BLOCK_SYMBOLS (b, iter, sym) |
c5aa993b | 552 | { |
7a78d0ee KB |
553 | fixup_symbol_section (sym, objfile); |
554 | ||
c5aa993b | 555 | /* The RS6000 code from which this was taken skipped |
176620f1 | 556 | any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN. |
c5aa993b JM |
557 | But I'm leaving out that test, on the theory that |
558 | they can't possibly pass the tests below. */ | |
559 | if ((SYMBOL_CLASS (sym) == LOC_LABEL | |
560 | || SYMBOL_CLASS (sym) == LOC_STATIC | |
561 | || SYMBOL_CLASS (sym) == LOC_INDIRECT) | |
562 | && SYMBOL_SECTION (sym) >= 0) | |
563 | { | |
564 | SYMBOL_VALUE_ADDRESS (sym) += | |
565 | ANOFFSET (delta, SYMBOL_SECTION (sym)); | |
566 | } | |
c906108c | 567 | #ifdef MIPS_EFI_SYMBOL_NAME |
c5aa993b | 568 | /* Relocate Extra Function Info for ecoff. */ |
c906108c | 569 | |
c5aa993b | 570 | else if (SYMBOL_CLASS (sym) == LOC_CONST |
176620f1 | 571 | && SYMBOL_DOMAIN (sym) == LABEL_DOMAIN |
22abf04a | 572 | && strcmp (DEPRECATED_SYMBOL_NAME (sym), MIPS_EFI_SYMBOL_NAME) == 0) |
c5aa993b | 573 | ecoff_relocate_efi (sym, ANOFFSET (delta, |
c906108c SS |
574 | s->block_line_section)); |
575 | #endif | |
c5aa993b JM |
576 | } |
577 | } | |
578 | } | |
c906108c SS |
579 | } |
580 | ||
581 | { | |
582 | struct partial_symtab *p; | |
583 | ||
584 | ALL_OBJFILE_PSYMTABS (objfile, p) | |
c5aa993b | 585 | { |
b8fbeb18 EZ |
586 | p->textlow += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
587 | p->texthigh += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c5aa993b | 588 | } |
c906108c SS |
589 | } |
590 | ||
591 | { | |
592 | struct partial_symbol **psym; | |
593 | ||
594 | for (psym = objfile->global_psymbols.list; | |
595 | psym < objfile->global_psymbols.next; | |
596 | psym++) | |
7a78d0ee KB |
597 | { |
598 | fixup_psymbol_section (*psym, objfile); | |
599 | if (SYMBOL_SECTION (*psym) >= 0) | |
600 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
601 | SYMBOL_SECTION (*psym)); | |
602 | } | |
c906108c SS |
603 | for (psym = objfile->static_psymbols.list; |
604 | psym < objfile->static_psymbols.next; | |
605 | psym++) | |
7a78d0ee KB |
606 | { |
607 | fixup_psymbol_section (*psym, objfile); | |
608 | if (SYMBOL_SECTION (*psym) >= 0) | |
609 | SYMBOL_VALUE_ADDRESS (*psym) += ANOFFSET (delta, | |
610 | SYMBOL_SECTION (*psym)); | |
611 | } | |
c906108c SS |
612 | } |
613 | ||
614 | { | |
615 | struct minimal_symbol *msym; | |
616 | ALL_OBJFILE_MSYMBOLS (objfile, msym) | |
617 | if (SYMBOL_SECTION (msym) >= 0) | |
c5aa993b | 618 | SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym)); |
c906108c SS |
619 | } |
620 | /* Relocating different sections by different amounts may cause the symbols | |
621 | to be out of order. */ | |
622 | msymbols_sort (objfile); | |
623 | ||
624 | { | |
625 | int i; | |
626 | for (i = 0; i < objfile->num_sections; ++i) | |
a4c8257b | 627 | (objfile->section_offsets)->offsets[i] = ANOFFSET (new_offsets, i); |
c906108c SS |
628 | } |
629 | ||
36b0c0e0 PS |
630 | if (objfile->ei.entry_point != ~(CORE_ADDR) 0) |
631 | { | |
632 | /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT | |
633 | only as a fallback. */ | |
634 | struct obj_section *s; | |
635 | s = find_pc_section (objfile->ei.entry_point); | |
636 | if (s) | |
637 | objfile->ei.entry_point += ANOFFSET (delta, s->the_bfd_section->index); | |
638 | else | |
639 | objfile->ei.entry_point += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
640 | } | |
641 | ||
c906108c SS |
642 | { |
643 | struct obj_section *s; | |
644 | bfd *abfd; | |
645 | ||
646 | abfd = objfile->obfd; | |
647 | ||
96baa820 | 648 | ALL_OBJFILE_OSECTIONS (objfile, s) |
c906108c | 649 | { |
78f0949b KB |
650 | int idx = s->the_bfd_section->index; |
651 | ||
652 | s->addr += ANOFFSET (delta, idx); | |
653 | s->endaddr += ANOFFSET (delta, idx); | |
c906108c SS |
654 | } |
655 | } | |
656 | ||
c906108c SS |
657 | if (objfile->ei.entry_func_lowpc != INVALID_ENTRY_LOWPC) |
658 | { | |
b8fbeb18 EZ |
659 | objfile->ei.entry_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
660 | objfile->ei.entry_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
661 | } |
662 | ||
627b3ba2 | 663 | if (objfile->ei.deprecated_entry_file_lowpc != INVALID_ENTRY_LOWPC) |
c906108c | 664 | { |
627b3ba2 AC |
665 | objfile->ei.deprecated_entry_file_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
666 | objfile->ei.deprecated_entry_file_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
667 | } |
668 | ||
669 | if (objfile->ei.main_func_lowpc != INVALID_ENTRY_LOWPC) | |
670 | { | |
b8fbeb18 EZ |
671 | objfile->ei.main_func_lowpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); |
672 | objfile->ei.main_func_highpc += ANOFFSET (delta, SECT_OFF_TEXT (objfile)); | |
c906108c SS |
673 | } |
674 | ||
675 | /* Relocate breakpoints as necessary, after things are relocated. */ | |
676 | breakpoint_re_set (); | |
677 | } | |
678 | \f | |
679 | /* Many places in gdb want to test just to see if we have any partial | |
680 | symbols available. This function returns zero if none are currently | |
681 | available, nonzero otherwise. */ | |
682 | ||
683 | int | |
fba45db2 | 684 | have_partial_symbols (void) |
c906108c SS |
685 | { |
686 | struct objfile *ofp; | |
687 | ||
688 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
689 | { |
690 | if (ofp->psymtabs != NULL) | |
691 | { | |
692 | return 1; | |
693 | } | |
694 | } | |
c906108c SS |
695 | return 0; |
696 | } | |
697 | ||
698 | /* Many places in gdb want to test just to see if we have any full | |
699 | symbols available. This function returns zero if none are currently | |
700 | available, nonzero otherwise. */ | |
701 | ||
702 | int | |
fba45db2 | 703 | have_full_symbols (void) |
c906108c SS |
704 | { |
705 | struct objfile *ofp; | |
706 | ||
707 | ALL_OBJFILES (ofp) | |
c5aa993b JM |
708 | { |
709 | if (ofp->symtabs != NULL) | |
710 | { | |
711 | return 1; | |
712 | } | |
713 | } | |
c906108c SS |
714 | return 0; |
715 | } | |
716 | ||
717 | ||
718 | /* This operations deletes all objfile entries that represent solibs that | |
719 | weren't explicitly loaded by the user, via e.g., the add-symbol-file | |
720 | command. | |
c5aa993b | 721 | */ |
c906108c | 722 | void |
fba45db2 | 723 | objfile_purge_solibs (void) |
c906108c | 724 | { |
c5aa993b JM |
725 | struct objfile *objf; |
726 | struct objfile *temp; | |
c906108c SS |
727 | |
728 | ALL_OBJFILES_SAFE (objf, temp) | |
729 | { | |
730 | /* We assume that the solib package has been purged already, or will | |
731 | be soon. | |
c5aa993b | 732 | */ |
2df3850c | 733 | if (!(objf->flags & OBJF_USERLOADED) && (objf->flags & OBJF_SHARED)) |
c906108c SS |
734 | free_objfile (objf); |
735 | } | |
736 | } | |
737 | ||
738 | ||
739 | /* Many places in gdb want to test just to see if we have any minimal | |
740 | symbols available. This function returns zero if none are currently | |
741 | available, nonzero otherwise. */ | |
742 | ||
743 | int | |
fba45db2 | 744 | have_minimal_symbols (void) |
c906108c SS |
745 | { |
746 | struct objfile *ofp; | |
747 | ||
748 | ALL_OBJFILES (ofp) | |
c5aa993b | 749 | { |
15831452 | 750 | if (ofp->minimal_symbol_count > 0) |
c5aa993b JM |
751 | { |
752 | return 1; | |
753 | } | |
754 | } | |
c906108c SS |
755 | return 0; |
756 | } | |
757 | ||
198beae2 AC |
758 | /* Returns a section whose range includes PC and SECTION, or NULL if |
759 | none found. Note the distinction between the return type, struct | |
760 | obj_section (which is defined in gdb), and the input type "struct | |
761 | bfd_section" (which is a bfd-defined data type). The obj_section | |
762 | contains a pointer to the "struct bfd_section". */ | |
c906108c SS |
763 | |
764 | struct obj_section * | |
198beae2 | 765 | find_pc_sect_section (CORE_ADDR pc, struct bfd_section *section) |
c906108c SS |
766 | { |
767 | struct obj_section *s; | |
768 | struct objfile *objfile; | |
c5aa993b | 769 | |
96baa820 | 770 | ALL_OBJSECTIONS (objfile, s) |
c5aa993b JM |
771 | if ((section == 0 || section == s->the_bfd_section) && |
772 | s->addr <= pc && pc < s->endaddr) | |
c5aa993b | 773 | return (s); |
c906108c | 774 | |
c5aa993b | 775 | return (NULL); |
c906108c SS |
776 | } |
777 | ||
778 | /* Returns a section whose range includes PC or NULL if none found. | |
779 | Backward compatibility, no section. */ | |
780 | ||
781 | struct obj_section * | |
fba45db2 | 782 | find_pc_section (CORE_ADDR pc) |
c906108c SS |
783 | { |
784 | return find_pc_sect_section (pc, find_pc_mapped_section (pc)); | |
785 | } | |
c5aa993b | 786 | |
c906108c SS |
787 | |
788 | /* In SVR4, we recognize a trampoline by it's section name. | |
789 | That is, if the pc is in a section named ".plt" then we are in | |
790 | a trampoline. */ | |
791 | ||
792 | int | |
fba45db2 | 793 | in_plt_section (CORE_ADDR pc, char *name) |
c906108c SS |
794 | { |
795 | struct obj_section *s; | |
796 | int retval = 0; | |
c5aa993b JM |
797 | |
798 | s = find_pc_section (pc); | |
799 | ||
c906108c SS |
800 | retval = (s != NULL |
801 | && s->the_bfd_section->name != NULL | |
6314a349 | 802 | && strcmp (s->the_bfd_section->name, ".plt") == 0); |
c5aa993b | 803 | return (retval); |
c906108c | 804 | } |
7be570e7 JM |
805 | |
806 | /* Return nonzero if NAME is in the import list of OBJFILE. Else | |
807 | return zero. */ | |
808 | ||
809 | int | |
fba45db2 | 810 | is_in_import_list (char *name, struct objfile *objfile) |
7be570e7 | 811 | { |
52f0bd74 | 812 | int i; |
7be570e7 JM |
813 | |
814 | if (!objfile || !name || !*name) | |
815 | return 0; | |
816 | ||
817 | for (i = 0; i < objfile->import_list_size; i++) | |
cb137aa5 | 818 | if (objfile->import_list[i] && DEPRECATED_STREQ (name, objfile->import_list[i])) |
7be570e7 JM |
819 | return 1; |
820 | return 0; | |
821 | } | |
0d0e1a63 MK |
822 | \f |
823 | ||
824 | /* Keep a registry of per-objfile data-pointers required by other GDB | |
825 | modules. */ | |
826 | ||
827 | struct objfile_data | |
828 | { | |
829 | unsigned index; | |
830 | }; | |
831 | ||
832 | struct objfile_data_registration | |
833 | { | |
834 | struct objfile_data *data; | |
835 | struct objfile_data_registration *next; | |
836 | }; | |
837 | ||
838 | struct objfile_data_registry | |
839 | { | |
840 | struct objfile_data_registration *registrations; | |
841 | unsigned num_registrations; | |
842 | }; | |
843 | ||
844 | static struct objfile_data_registry objfile_data_registry = { NULL, 0 }; | |
845 | ||
846 | const struct objfile_data * | |
847 | register_objfile_data (void) | |
848 | { | |
849 | struct objfile_data_registration **curr; | |
850 | ||
851 | /* Append new registration. */ | |
852 | for (curr = &objfile_data_registry.registrations; | |
853 | *curr != NULL; curr = &(*curr)->next); | |
7be570e7 | 854 | |
0d0e1a63 MK |
855 | *curr = XMALLOC (struct objfile_data_registration); |
856 | (*curr)->next = NULL; | |
857 | (*curr)->data = XMALLOC (struct objfile_data); | |
858 | (*curr)->data->index = objfile_data_registry.num_registrations++; | |
859 | ||
860 | return (*curr)->data; | |
861 | } | |
862 | ||
863 | static void | |
864 | objfile_alloc_data (struct objfile *objfile) | |
865 | { | |
866 | gdb_assert (objfile->data == NULL); | |
867 | objfile->num_data = objfile_data_registry.num_registrations; | |
868 | objfile->data = XCALLOC (objfile->num_data, void *); | |
869 | } | |
870 | ||
871 | static void | |
872 | objfile_free_data (struct objfile *objfile) | |
873 | { | |
874 | gdb_assert (objfile->data != NULL); | |
875 | xfree (objfile->data); | |
876 | objfile->data = NULL; | |
877 | } | |
878 | ||
7b097ae3 MK |
879 | void |
880 | clear_objfile_data (struct objfile *objfile) | |
881 | { | |
882 | gdb_assert (objfile->data != NULL); | |
883 | memset (objfile->data, 0, objfile->num_data * sizeof (void *)); | |
884 | } | |
885 | ||
0d0e1a63 MK |
886 | void |
887 | set_objfile_data (struct objfile *objfile, const struct objfile_data *data, | |
888 | void *value) | |
889 | { | |
890 | gdb_assert (data->index < objfile->num_data); | |
891 | objfile->data[data->index] = value; | |
892 | } | |
893 | ||
894 | void * | |
895 | objfile_data (struct objfile *objfile, const struct objfile_data *data) | |
896 | { | |
897 | gdb_assert (data->index < objfile->num_data); | |
898 | return objfile->data[data->index]; | |
899 | } |