1 /* GDB routines for manipulating objfiles.
3 Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
4 2002, 2003, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
6 Contributed by Cygnus Support, using pieces from other GDB modules.
8 This file is part of GDB.
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 3 of the License, or
13 (at your option) any later version.
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.
20 You should have received a copy of the GNU General Public License
21 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 /* This file contains support routines for creating, manipulating, and
24 destroying objfile structures. */
27 #include "bfd.h" /* Binary File Description */
31 #include "gdb-stabs.h"
34 #include "mdebugread.h"
35 #include "expression.h"
36 #include "parser-defs.h"
38 #include "gdb_assert.h"
39 #include <sys/types.h>
42 #include "gdb_obstack.h"
43 #include "gdb_string.h"
46 #include "breakpoint.h"
48 #include "dictionary.h"
51 #include "arch-utils.h"
54 /* Prototypes for local functions */
56 static void objfile_alloc_data (struct objfile
*objfile
);
57 static void objfile_free_data (struct objfile
*objfile
);
59 /* Externally visible variables that are owned by this module.
60 See declarations in objfile.h for more info. */
62 struct objfile
*object_files
; /* Linked list of all objfiles */
63 struct objfile
*current_objfile
; /* For symbol file being read in */
64 struct objfile
*symfile_objfile
; /* Main symbol table loaded from */
65 struct objfile
*rt_common_objfile
; /* For runtime common symbols */
67 /* Locate all mappable sections of a BFD file.
68 objfile_p_char is a char * to get it through
69 bfd_map_over_sections; we cast it back to its proper type. */
71 /* Called via bfd_map_over_sections to build up the section table that
72 the objfile references. The objfile contains pointers to the start
73 of the table (objfile->sections) and to the first location after
74 the end of the table (objfile->sections_end). */
77 add_to_objfile_sections (struct bfd
*abfd
, struct bfd_section
*asect
,
80 struct objfile
*objfile
= (struct objfile
*) objfile_p_char
;
81 struct obj_section section
;
84 aflag
= bfd_get_section_flags (abfd
, asect
);
86 if (!(aflag
& SEC_ALLOC
))
89 if (0 == bfd_section_size (abfd
, asect
))
91 section
.objfile
= objfile
;
92 section
.the_bfd_section
= asect
;
93 section
.ovly_mapped
= 0;
94 obstack_grow (&objfile
->objfile_obstack
, (char *) §ion
, sizeof (section
));
96 = (struct obj_section
*) (((size_t) objfile
->sections_end
) + 1);
99 /* Builds a section table for OBJFILE.
100 Returns 0 if OK, 1 on error (in which case bfd_error contains the
103 Note that while we are building the table, which goes into the
104 psymbol obstack, we hijack the sections_end pointer to instead hold
105 a count of the number of sections. When bfd_map_over_sections
106 returns, this count is used to compute the pointer to the end of
107 the sections table, which then overwrites the count.
109 Also note that the OFFSET and OVLY_MAPPED in each table entry
110 are initialized to zero.
112 Also note that if anything else writes to the psymbol obstack while
113 we are building the table, we're pretty much hosed. */
116 build_objfile_section_table (struct objfile
*objfile
)
118 /* objfile->sections can be already set when reading a mapped symbol
119 file. I believe that we do need to rebuild the section table in
120 this case (we rebuild other things derived from the bfd), but we
121 can't free the old one (it's in the objfile_obstack). So we just
122 waste some memory. */
124 objfile
->sections_end
= 0;
125 bfd_map_over_sections (objfile
->obfd
,
126 add_to_objfile_sections
, (void *) objfile
);
127 objfile
->sections
= obstack_finish (&objfile
->objfile_obstack
);
128 objfile
->sections_end
= objfile
->sections
+ (size_t) objfile
->sections_end
;
132 /* Given a pointer to an initialized bfd (ABFD) and some flag bits
133 allocate a new objfile struct, fill it in as best we can, link it
134 into the list of all known objfiles, and return a pointer to the
137 The FLAGS word contains various bits (OBJF_*) that can be taken as
138 requests for specific operations. Other bits like OBJF_SHARED are
139 simply copied through to the new objfile flags member. */
141 /* NOTE: carlton/2003-02-04: This function is called with args NULL, 0
142 by jv-lang.c, to create an artificial objfile used to hold
143 information about dynamically-loaded Java classes. Unfortunately,
144 that branch of this function doesn't get tested very frequently, so
145 it's prone to breakage. (E.g. at one time the name was set to NULL
146 in that situation, which broke a loop over all names in the dynamic
147 library loader.) If you change this function, please try to leave
148 things in a consistent state even if abfd is NULL. */
151 allocate_objfile (bfd
*abfd
, int flags
)
153 struct objfile
*objfile
= NULL
;
154 struct objfile
*last_one
= NULL
;
156 /* If we don't support mapped symbol files, didn't ask for the file to be
157 mapped, or failed to open the mapped file for some reason, then revert
158 back to an unmapped objfile. */
162 objfile
= (struct objfile
*) xmalloc (sizeof (struct objfile
));
163 memset (objfile
, 0, sizeof (struct objfile
));
164 objfile
->psymbol_cache
= bcache_xmalloc ();
165 objfile
->macro_cache
= bcache_xmalloc ();
166 /* We could use obstack_specify_allocation here instead, but
167 gdb_obstack.h specifies the alloc/dealloc functions. */
168 obstack_init (&objfile
->objfile_obstack
);
169 terminate_minimal_symbol_table (objfile
);
172 objfile_alloc_data (objfile
);
174 /* Update the per-objfile information that comes from the bfd, ensuring
175 that any data that is reference is saved in the per-objfile data
178 objfile
->obfd
= abfd
;
179 if (objfile
->name
!= NULL
)
181 xfree (objfile
->name
);
185 /* Look up the gdbarch associated with the BFD. */
186 objfile
->gdbarch
= gdbarch_from_bfd (abfd
);
188 objfile
->name
= xstrdup (bfd_get_filename (abfd
));
189 objfile
->mtime
= bfd_get_mtime (abfd
);
191 /* Build section table. */
193 if (build_objfile_section_table (objfile
))
195 error (_("Can't find the file sections in `%s': %s"),
196 objfile
->name
, bfd_errmsg (bfd_get_error ()));
201 objfile
->name
= xstrdup ("<<anonymous objfile>>");
204 /* Initialize the section indexes for this objfile, so that we can
205 later detect if they are used w/o being properly assigned to. */
207 objfile
->sect_index_text
= -1;
208 objfile
->sect_index_data
= -1;
209 objfile
->sect_index_bss
= -1;
210 objfile
->sect_index_rodata
= -1;
212 /* We don't yet have a C++-specific namespace symtab. */
214 objfile
->cp_namespace_symtab
= NULL
;
216 /* Add this file onto the tail of the linked list of other such files. */
218 objfile
->next
= NULL
;
219 if (object_files
== NULL
)
220 object_files
= objfile
;
223 for (last_one
= object_files
;
225 last_one
= last_one
->next
);
226 last_one
->next
= objfile
;
229 /* Save passed in flag bits. */
230 objfile
->flags
|= flags
;
235 /* Retrieve the gdbarch associated with OBJFILE. */
237 get_objfile_arch (struct objfile
*objfile
)
239 return objfile
->gdbarch
;
242 /* Initialize entry point information for this objfile. */
245 init_entry_point_info (struct objfile
*objfile
)
247 /* Save startup file's range of PC addresses to help blockframe.c
248 decide where the bottom of the stack is. */
250 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
252 /* Executable file -- record its entry point so we'll recognize
253 the startup file because it contains the entry point. */
254 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
256 else if (bfd_get_file_flags (objfile
->obfd
) & DYNAMIC
257 && bfd_get_start_address (objfile
->obfd
) != 0)
258 /* Some shared libraries may have entry points set and be
259 runnable. There's no clear way to indicate this, so just check
260 for values other than zero. */
261 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
264 /* Examination of non-executable.o files. Short-circuit this stuff. */
265 objfile
->ei
.entry_point
= INVALID_ENTRY_POINT
;
269 /* Get current entry point address. */
272 entry_point_address (void)
274 return symfile_objfile
? symfile_objfile
->ei
.entry_point
: 0;
277 /* Create the terminating entry of OBJFILE's minimal symbol table.
278 If OBJFILE->msymbols is zero, allocate a single entry from
279 OBJFILE->objfile_obstack; otherwise, just initialize
280 OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */
282 terminate_minimal_symbol_table (struct objfile
*objfile
)
284 if (! objfile
->msymbols
)
285 objfile
->msymbols
= ((struct minimal_symbol
*)
286 obstack_alloc (&objfile
->objfile_obstack
,
287 sizeof (objfile
->msymbols
[0])));
290 struct minimal_symbol
*m
291 = &objfile
->msymbols
[objfile
->minimal_symbol_count
];
293 memset (m
, 0, sizeof (*m
));
294 /* Don't rely on these enumeration values being 0's. */
295 MSYMBOL_TYPE (m
) = mst_unknown
;
296 SYMBOL_INIT_LANGUAGE_SPECIFIC (m
, language_unknown
);
301 /* Put one object file before a specified on in the global list.
302 This can be used to make sure an object file is destroyed before
303 another when using ALL_OBJFILES_SAFE to free all objfiles. */
305 put_objfile_before (struct objfile
*objfile
, struct objfile
*before_this
)
307 struct objfile
**objp
;
309 unlink_objfile (objfile
);
311 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
313 if (*objp
== before_this
)
315 objfile
->next
= *objp
;
321 internal_error (__FILE__
, __LINE__
,
322 _("put_objfile_before: before objfile not in list"));
325 /* Put OBJFILE at the front of the list. */
328 objfile_to_front (struct objfile
*objfile
)
330 struct objfile
**objp
;
331 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
333 if (*objp
== objfile
)
335 /* Unhook it from where it is. */
336 *objp
= objfile
->next
;
337 /* Put it in the front. */
338 objfile
->next
= object_files
;
339 object_files
= objfile
;
345 /* Unlink OBJFILE from the list of known objfiles, if it is found in the
348 It is not a bug, or error, to call this function if OBJFILE is not known
349 to be in the current list. This is done in the case of mapped objfiles,
350 for example, just to ensure that the mapped objfile doesn't appear twice
351 in the list. Since the list is threaded, linking in a mapped objfile
352 twice would create a circular list.
354 If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
355 unlinking it, just to ensure that we have completely severed any linkages
356 between the OBJFILE and the list. */
359 unlink_objfile (struct objfile
*objfile
)
361 struct objfile
**objpp
;
363 for (objpp
= &object_files
; *objpp
!= NULL
; objpp
= &((*objpp
)->next
))
365 if (*objpp
== objfile
)
367 *objpp
= (*objpp
)->next
;
368 objfile
->next
= NULL
;
373 internal_error (__FILE__
, __LINE__
,
374 _("unlink_objfile: objfile already unlinked"));
378 /* Destroy an objfile and all the symtabs and psymtabs under it. Note
379 that as much as possible is allocated on the objfile_obstack
380 so that the memory can be efficiently freed.
382 Things which we do NOT free because they are not in malloc'd memory
383 or not in memory specific to the objfile include:
387 FIXME: If the objfile is using reusable symbol information (via mmalloc),
388 then we need to take into account the fact that more than one process
389 may be using the symbol information at the same time (when mmalloc is
390 extended to support cooperative locking). When more than one process
391 is using the mapped symbol info, we need to be more careful about when
392 we free objects in the reusable area. */
395 free_objfile (struct objfile
*objfile
)
397 if (objfile
->separate_debug_objfile
)
399 free_objfile (objfile
->separate_debug_objfile
);
402 if (objfile
->separate_debug_objfile_backlink
)
404 /* We freed the separate debug file, make sure the base objfile
405 doesn't reference it. */
406 objfile
->separate_debug_objfile_backlink
->separate_debug_objfile
= NULL
;
409 /* Remove any references to this objfile in the global value
411 preserve_values (objfile
);
413 /* First do any symbol file specific actions required when we are
414 finished with a particular symbol file. Note that if the objfile
415 is using reusable symbol information (via mmalloc) then each of
416 these routines is responsible for doing the correct thing, either
417 freeing things which are valid only during this particular gdb
418 execution, or leaving them to be reused during the next one. */
420 if (objfile
->sf
!= NULL
)
422 (*objfile
->sf
->sym_finish
) (objfile
);
425 /* Discard any data modules have associated with the objfile. */
426 objfile_free_data (objfile
);
428 /* We always close the bfd, unless the OBJF_KEEPBFD flag is set. */
430 if (objfile
->obfd
!= NULL
&& !(objfile
->flags
& OBJF_KEEPBFD
))
432 char *name
= bfd_get_filename (objfile
->obfd
);
433 if (!bfd_close (objfile
->obfd
))
434 warning (_("cannot close \"%s\": %s"),
435 name
, bfd_errmsg (bfd_get_error ()));
439 /* Remove it from the chain of all objfiles. */
441 unlink_objfile (objfile
);
443 /* If we are going to free the runtime common objfile, mark it
446 if (objfile
== rt_common_objfile
)
447 rt_common_objfile
= NULL
;
449 /* Before the symbol table code was redone to make it easier to
450 selectively load and remove information particular to a specific
451 linkage unit, gdb used to do these things whenever the monolithic
452 symbol table was blown away. How much still needs to be done
453 is unknown, but we play it safe for now and keep each action until
454 it is shown to be no longer needed. */
456 /* Not all our callers call clear_symtab_users (objfile_purge_solibs,
457 for example), so we need to call this here. */
458 clear_pc_function_cache ();
460 /* Clear globals which might have pointed into a removed objfile.
461 FIXME: It's not clear which of these are supposed to persist
462 between expressions and which ought to be reset each time. */
463 expression_context_block
= NULL
;
464 innermost_block
= NULL
;
466 /* Check to see if the current_source_symtab belongs to this objfile,
467 and if so, call clear_current_source_symtab_and_line. */
470 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
473 ALL_OBJFILE_SYMTABS (objfile
, s
)
475 if (s
== cursal
.symtab
)
476 clear_current_source_symtab_and_line ();
480 /* The last thing we do is free the objfile struct itself. */
482 if (objfile
->name
!= NULL
)
484 xfree (objfile
->name
);
486 if (objfile
->global_psymbols
.list
)
487 xfree (objfile
->global_psymbols
.list
);
488 if (objfile
->static_psymbols
.list
)
489 xfree (objfile
->static_psymbols
.list
);
490 /* Free the obstacks for non-reusable objfiles */
491 bcache_xfree (objfile
->psymbol_cache
);
492 bcache_xfree (objfile
->macro_cache
);
493 if (objfile
->demangled_names_hash
)
494 htab_delete (objfile
->demangled_names_hash
);
495 obstack_free (&objfile
->objfile_obstack
, 0);
501 do_free_objfile_cleanup (void *obj
)
507 make_cleanup_free_objfile (struct objfile
*obj
)
509 return make_cleanup (do_free_objfile_cleanup
, obj
);
512 /* Free all the object files at once and clean up their users. */
515 free_all_objfiles (void)
517 struct objfile
*objfile
, *temp
;
519 ALL_OBJFILES_SAFE (objfile
, temp
)
521 free_objfile (objfile
);
523 clear_symtab_users ();
526 /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS
527 entries in new_offsets. */
529 objfile_relocate (struct objfile
*objfile
, struct section_offsets
*new_offsets
)
531 struct obj_section
*s
;
532 struct section_offsets
*delta
=
533 ((struct section_offsets
*)
534 alloca (SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
)));
538 int something_changed
= 0;
539 for (i
= 0; i
< objfile
->num_sections
; ++i
)
542 ANOFFSET (new_offsets
, i
) - ANOFFSET (objfile
->section_offsets
, i
);
543 if (ANOFFSET (delta
, i
) != 0)
544 something_changed
= 1;
546 if (!something_changed
)
550 /* OK, get all the symtabs. */
554 ALL_OBJFILE_SYMTABS (objfile
, s
)
557 struct blockvector
*bv
;
560 /* First the line table. */
564 for (i
= 0; i
< l
->nitems
; ++i
)
565 l
->item
[i
].pc
+= ANOFFSET (delta
, s
->block_line_section
);
568 /* Don't relocate a shared blockvector more than once. */
572 bv
= BLOCKVECTOR (s
);
573 if (BLOCKVECTOR_MAP (bv
))
574 addrmap_relocate (BLOCKVECTOR_MAP (bv
),
575 ANOFFSET (delta
, s
->block_line_section
));
577 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); ++i
)
581 struct dict_iterator iter
;
583 b
= BLOCKVECTOR_BLOCK (bv
, i
);
584 BLOCK_START (b
) += ANOFFSET (delta
, s
->block_line_section
);
585 BLOCK_END (b
) += ANOFFSET (delta
, s
->block_line_section
);
587 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
589 fixup_symbol_section (sym
, objfile
);
591 /* The RS6000 code from which this was taken skipped
592 any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN.
593 But I'm leaving out that test, on the theory that
594 they can't possibly pass the tests below. */
595 if ((SYMBOL_CLASS (sym
) == LOC_LABEL
596 || SYMBOL_CLASS (sym
) == LOC_STATIC
)
597 && SYMBOL_SECTION (sym
) >= 0)
599 SYMBOL_VALUE_ADDRESS (sym
) +=
600 ANOFFSET (delta
, SYMBOL_SECTION (sym
));
608 struct partial_symtab
*p
;
610 ALL_OBJFILE_PSYMTABS (objfile
, p
)
612 p
->textlow
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
613 p
->texthigh
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
618 struct partial_symbol
**psym
;
620 for (psym
= objfile
->global_psymbols
.list
;
621 psym
< objfile
->global_psymbols
.next
;
624 fixup_psymbol_section (*psym
, objfile
);
625 if (SYMBOL_SECTION (*psym
) >= 0)
626 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
627 SYMBOL_SECTION (*psym
));
629 for (psym
= objfile
->static_psymbols
.list
;
630 psym
< objfile
->static_psymbols
.next
;
633 fixup_psymbol_section (*psym
, objfile
);
634 if (SYMBOL_SECTION (*psym
) >= 0)
635 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
636 SYMBOL_SECTION (*psym
));
641 struct minimal_symbol
*msym
;
642 ALL_OBJFILE_MSYMBOLS (objfile
, msym
)
643 if (SYMBOL_SECTION (msym
) >= 0)
644 SYMBOL_VALUE_ADDRESS (msym
) += ANOFFSET (delta
, SYMBOL_SECTION (msym
));
646 /* Relocating different sections by different amounts may cause the symbols
647 to be out of order. */
648 msymbols_sort (objfile
);
652 for (i
= 0; i
< objfile
->num_sections
; ++i
)
653 (objfile
->section_offsets
)->offsets
[i
] = ANOFFSET (new_offsets
, i
);
656 if (objfile
->ei
.entry_point
!= ~(CORE_ADDR
) 0)
658 /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT
659 only as a fallback. */
660 struct obj_section
*s
;
661 s
= find_pc_section (objfile
->ei
.entry_point
);
663 objfile
->ei
.entry_point
+= ANOFFSET (delta
, s
->the_bfd_section
->index
);
665 objfile
->ei
.entry_point
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
668 /* Update the table in exec_ops, used to read memory. */
669 ALL_OBJFILE_OSECTIONS (objfile
, s
)
671 int idx
= s
->the_bfd_section
->index
;
673 exec_set_section_address (bfd_get_filename (objfile
->obfd
), idx
,
674 obj_section_addr (s
));
677 /* Relocate breakpoints as necessary, after things are relocated. */
678 breakpoint_re_set ();
681 /* Many places in gdb want to test just to see if we have any partial
682 symbols available. This function returns zero if none are currently
683 available, nonzero otherwise. */
686 have_partial_symbols (void)
692 if (ofp
->psymtabs
!= NULL
)
700 /* Many places in gdb want to test just to see if we have any full
701 symbols available. This function returns zero if none are currently
702 available, nonzero otherwise. */
705 have_full_symbols (void)
711 if (ofp
->symtabs
!= NULL
)
720 /* This operations deletes all objfile entries that represent solibs that
721 weren't explicitly loaded by the user, via e.g., the add-symbol-file
725 objfile_purge_solibs (void)
727 struct objfile
*objf
;
728 struct objfile
*temp
;
730 ALL_OBJFILES_SAFE (objf
, temp
)
732 /* We assume that the solib package has been purged already, or will
735 if (!(objf
->flags
& OBJF_USERLOADED
) && (objf
->flags
& OBJF_SHARED
))
741 /* Many places in gdb want to test just to see if we have any minimal
742 symbols available. This function returns zero if none are currently
743 available, nonzero otherwise. */
746 have_minimal_symbols (void)
752 if (ofp
->minimal_symbol_count
> 0)
760 /* Returns a section whose range includes PC or NULL if none found. */
763 find_pc_section (CORE_ADDR pc
)
765 struct obj_section
*s
;
766 struct objfile
*objfile
;
768 /* Check for mapped overlay section first. */
769 s
= find_pc_mapped_section (pc
);
773 ALL_OBJSECTIONS (objfile
, s
)
774 if (obj_section_addr (s
) <= pc
&& pc
< obj_section_endaddr (s
))
781 /* In SVR4, we recognize a trampoline by it's section name.
782 That is, if the pc is in a section named ".plt" then we are in
786 in_plt_section (CORE_ADDR pc
, char *name
)
788 struct obj_section
*s
;
791 s
= find_pc_section (pc
);
794 && s
->the_bfd_section
->name
!= NULL
795 && strcmp (s
->the_bfd_section
->name
, ".plt") == 0);
800 /* Keep a registry of per-objfile data-pointers required by other GDB
806 void (*cleanup
) (struct objfile
*, void *);
809 struct objfile_data_registration
811 struct objfile_data
*data
;
812 struct objfile_data_registration
*next
;
815 struct objfile_data_registry
817 struct objfile_data_registration
*registrations
;
818 unsigned num_registrations
;
821 static struct objfile_data_registry objfile_data_registry
= { NULL
, 0 };
823 const struct objfile_data
*
824 register_objfile_data_with_cleanup (void (*cleanup
) (struct objfile
*, void *))
826 struct objfile_data_registration
**curr
;
828 /* Append new registration. */
829 for (curr
= &objfile_data_registry
.registrations
;
830 *curr
!= NULL
; curr
= &(*curr
)->next
);
832 *curr
= XMALLOC (struct objfile_data_registration
);
833 (*curr
)->next
= NULL
;
834 (*curr
)->data
= XMALLOC (struct objfile_data
);
835 (*curr
)->data
->index
= objfile_data_registry
.num_registrations
++;
836 (*curr
)->data
->cleanup
= cleanup
;
838 return (*curr
)->data
;
841 const struct objfile_data
*
842 register_objfile_data (void)
844 return register_objfile_data_with_cleanup (NULL
);
848 objfile_alloc_data (struct objfile
*objfile
)
850 gdb_assert (objfile
->data
== NULL
);
851 objfile
->num_data
= objfile_data_registry
.num_registrations
;
852 objfile
->data
= XCALLOC (objfile
->num_data
, void *);
856 objfile_free_data (struct objfile
*objfile
)
858 gdb_assert (objfile
->data
!= NULL
);
859 clear_objfile_data (objfile
);
860 xfree (objfile
->data
);
861 objfile
->data
= NULL
;
865 clear_objfile_data (struct objfile
*objfile
)
867 struct objfile_data_registration
*registration
;
870 gdb_assert (objfile
->data
!= NULL
);
872 for (registration
= objfile_data_registry
.registrations
, i
= 0;
873 i
< objfile
->num_data
;
874 registration
= registration
->next
, i
++)
875 if (objfile
->data
[i
] != NULL
&& registration
->data
->cleanup
)
876 registration
->data
->cleanup (objfile
, objfile
->data
[i
]);
878 memset (objfile
->data
, 0, objfile
->num_data
* sizeof (void *));
882 set_objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
,
885 gdb_assert (data
->index
< objfile
->num_data
);
886 objfile
->data
[data
->index
] = value
;
890 objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
)
892 gdb_assert (data
->index
< objfile
->num_data
);
893 return objfile
->data
[data
->index
];