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 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"
52 /* Prototypes for local functions */
54 static void objfile_alloc_data (struct objfile
*objfile
);
55 static void objfile_free_data (struct objfile
*objfile
);
57 /* Externally visible variables that are owned by this module.
58 See declarations in objfile.h for more info. */
60 struct objfile
*object_files
; /* Linked list of all objfiles */
61 struct objfile
*current_objfile
; /* For symbol file being read in */
62 struct objfile
*symfile_objfile
; /* Main symbol table loaded from */
63 struct objfile
*rt_common_objfile
; /* For runtime common symbols */
65 /* Locate all mappable sections of a BFD file.
66 objfile_p_char is a char * to get it through
67 bfd_map_over_sections; we cast it back to its proper type. */
69 #ifndef TARGET_KEEP_SECTION
70 #define TARGET_KEEP_SECTION(ASECT) 0
73 /* Called via bfd_map_over_sections to build up the section table that
74 the objfile references. The objfile contains pointers to the start
75 of the table (objfile->sections) and to the first location after
76 the end of the table (objfile->sections_end). */
79 add_to_objfile_sections (struct bfd
*abfd
, struct bfd_section
*asect
,
82 struct objfile
*objfile
= (struct objfile
*) objfile_p_char
;
83 struct obj_section section
;
86 aflag
= bfd_get_section_flags (abfd
, asect
);
88 if (!(aflag
& SEC_ALLOC
) && !(TARGET_KEEP_SECTION (asect
)))
91 if (0 == bfd_section_size (abfd
, asect
))
94 section
.objfile
= objfile
;
95 section
.the_bfd_section
= asect
;
96 section
.ovly_mapped
= 0;
97 section
.addr
= bfd_section_vma (abfd
, asect
);
98 section
.endaddr
= section
.addr
+ bfd_section_size (abfd
, asect
);
99 obstack_grow (&objfile
->objfile_obstack
, (char *) §ion
, sizeof (section
));
100 objfile
->sections_end
= (struct obj_section
*) (((unsigned long) objfile
->sections_end
) + 1);
103 /* Builds a section table for OBJFILE.
104 Returns 0 if OK, 1 on error (in which case bfd_error contains the
107 Note that while we are building the table, which goes into the
108 psymbol obstack, we hijack the sections_end pointer to instead hold
109 a count of the number of sections. When bfd_map_over_sections
110 returns, this count is used to compute the pointer to the end of
111 the sections table, which then overwrites the count.
113 Also note that the OFFSET and OVLY_MAPPED in each table entry
114 are initialized to zero.
116 Also note that if anything else writes to the psymbol obstack while
117 we are building the table, we're pretty much hosed. */
120 build_objfile_section_table (struct objfile
*objfile
)
122 /* objfile->sections can be already set when reading a mapped symbol
123 file. I believe that we do need to rebuild the section table in
124 this case (we rebuild other things derived from the bfd), but we
125 can't free the old one (it's in the objfile_obstack). So we just
126 waste some memory. */
128 objfile
->sections_end
= 0;
129 bfd_map_over_sections (objfile
->obfd
, add_to_objfile_sections
, (char *) objfile
);
130 objfile
->sections
= (struct obj_section
*)
131 obstack_finish (&objfile
->objfile_obstack
);
132 objfile
->sections_end
= objfile
->sections
+ (unsigned long) objfile
->sections_end
;
136 /* Given a pointer to an initialized bfd (ABFD) and some flag bits
137 allocate a new objfile struct, fill it in as best we can, link it
138 into the list of all known objfiles, and return a pointer to the
141 The FLAGS word contains various bits (OBJF_*) that can be taken as
142 requests for specific operations. Other bits like OBJF_SHARED are
143 simply copied through to the new objfile flags member. */
145 /* NOTE: carlton/2003-02-04: This function is called with args NULL, 0
146 by jv-lang.c, to create an artificial objfile used to hold
147 information about dynamically-loaded Java classes. Unfortunately,
148 that branch of this function doesn't get tested very frequently, so
149 it's prone to breakage. (E.g. at one time the name was set to NULL
150 in that situation, which broke a loop over all names in the dynamic
151 library loader.) If you change this function, please try to leave
152 things in a consistent state even if abfd is NULL. */
155 allocate_objfile (bfd
*abfd
, int flags
)
157 struct objfile
*objfile
= NULL
;
158 struct objfile
*last_one
= NULL
;
160 /* If we don't support mapped symbol files, didn't ask for the file to be
161 mapped, or failed to open the mapped file for some reason, then revert
162 back to an unmapped objfile. */
166 objfile
= (struct objfile
*) xmalloc (sizeof (struct objfile
));
167 memset (objfile
, 0, sizeof (struct objfile
));
169 objfile
->psymbol_cache
= bcache_xmalloc ();
170 objfile
->macro_cache
= bcache_xmalloc ();
171 /* We could use obstack_specify_allocation here instead, but
172 gdb_obstack.h specifies the alloc/dealloc functions. */
173 obstack_init (&objfile
->objfile_obstack
);
174 terminate_minimal_symbol_table (objfile
);
177 objfile_alloc_data (objfile
);
179 /* Update the per-objfile information that comes from the bfd, ensuring
180 that any data that is reference is saved in the per-objfile data
183 objfile
->obfd
= abfd
;
184 if (objfile
->name
!= NULL
)
186 xfree (objfile
->name
);
190 objfile
->name
= xstrdup (bfd_get_filename (abfd
));
191 objfile
->mtime
= bfd_get_mtime (abfd
);
193 /* Build section table. */
195 if (build_objfile_section_table (objfile
))
197 error (_("Can't find the file sections in `%s': %s"),
198 objfile
->name
, bfd_errmsg (bfd_get_error ()));
203 objfile
->name
= xstrdup ("<<anonymous objfile>>");
206 /* Initialize the section indexes for this objfile, so that we can
207 later detect if they are used w/o being properly assigned to. */
209 objfile
->sect_index_text
= -1;
210 objfile
->sect_index_data
= -1;
211 objfile
->sect_index_bss
= -1;
212 objfile
->sect_index_rodata
= -1;
214 /* We don't yet have a C++-specific namespace symtab. */
216 objfile
->cp_namespace_symtab
= NULL
;
218 /* Add this file onto the tail of the linked list of other such files. */
220 objfile
->next
= NULL
;
221 if (object_files
== NULL
)
222 object_files
= objfile
;
225 for (last_one
= object_files
;
227 last_one
= last_one
->next
);
228 last_one
->next
= objfile
;
231 /* Save passed in flag bits. */
232 objfile
->flags
|= flags
;
237 /* Initialize entry point information for this objfile. */
240 init_entry_point_info (struct objfile
*objfile
)
242 /* Save startup file's range of PC addresses to help blockframe.c
243 decide where the bottom of the stack is. */
245 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
247 /* Executable file -- record its entry point so we'll recognize
248 the startup file because it contains the entry point. */
249 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
253 /* Examination of non-executable.o files. Short-circuit this stuff. */
254 objfile
->ei
.entry_point
= INVALID_ENTRY_POINT
;
258 /* Get current entry point address. */
261 entry_point_address (void)
263 return symfile_objfile
? symfile_objfile
->ei
.entry_point
: 0;
266 /* Create the terminating entry of OBJFILE's minimal symbol table.
267 If OBJFILE->msymbols is zero, allocate a single entry from
268 OBJFILE->objfile_obstack; otherwise, just initialize
269 OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */
271 terminate_minimal_symbol_table (struct objfile
*objfile
)
273 if (! objfile
->msymbols
)
274 objfile
->msymbols
= ((struct minimal_symbol
*)
275 obstack_alloc (&objfile
->objfile_obstack
,
276 sizeof (objfile
->msymbols
[0])));
279 struct minimal_symbol
*m
280 = &objfile
->msymbols
[objfile
->minimal_symbol_count
];
282 memset (m
, 0, sizeof (*m
));
283 /* Don't rely on these enumeration values being 0's. */
284 MSYMBOL_TYPE (m
) = mst_unknown
;
285 SYMBOL_INIT_LANGUAGE_SPECIFIC (m
, language_unknown
);
290 /* Put one object file before a specified on in the global list.
291 This can be used to make sure an object file is destroyed before
292 another when using ALL_OBJFILES_SAFE to free all objfiles. */
294 put_objfile_before (struct objfile
*objfile
, struct objfile
*before_this
)
296 struct objfile
**objp
;
298 unlink_objfile (objfile
);
300 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
302 if (*objp
== before_this
)
304 objfile
->next
= *objp
;
310 internal_error (__FILE__
, __LINE__
,
311 _("put_objfile_before: before objfile not in list"));
314 /* Put OBJFILE at the front of the list. */
317 objfile_to_front (struct objfile
*objfile
)
319 struct objfile
**objp
;
320 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
322 if (*objp
== objfile
)
324 /* Unhook it from where it is. */
325 *objp
= objfile
->next
;
326 /* Put it in the front. */
327 objfile
->next
= object_files
;
328 object_files
= objfile
;
334 /* Unlink OBJFILE from the list of known objfiles, if it is found in the
337 It is not a bug, or error, to call this function if OBJFILE is not known
338 to be in the current list. This is done in the case of mapped objfiles,
339 for example, just to ensure that the mapped objfile doesn't appear twice
340 in the list. Since the list is threaded, linking in a mapped objfile
341 twice would create a circular list.
343 If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
344 unlinking it, just to ensure that we have completely severed any linkages
345 between the OBJFILE and the list. */
348 unlink_objfile (struct objfile
*objfile
)
350 struct objfile
**objpp
;
352 for (objpp
= &object_files
; *objpp
!= NULL
; objpp
= &((*objpp
)->next
))
354 if (*objpp
== objfile
)
356 *objpp
= (*objpp
)->next
;
357 objfile
->next
= NULL
;
362 internal_error (__FILE__
, __LINE__
,
363 _("unlink_objfile: objfile already unlinked"));
367 /* Destroy an objfile and all the symtabs and psymtabs under it. Note
368 that as much as possible is allocated on the objfile_obstack
369 so that the memory can be efficiently freed.
371 Things which we do NOT free because they are not in malloc'd memory
372 or not in memory specific to the objfile include:
376 FIXME: If the objfile is using reusable symbol information (via mmalloc),
377 then we need to take into account the fact that more than one process
378 may be using the symbol information at the same time (when mmalloc is
379 extended to support cooperative locking). When more than one process
380 is using the mapped symbol info, we need to be more careful about when
381 we free objects in the reusable area. */
384 free_objfile (struct objfile
*objfile
)
386 if (objfile
->separate_debug_objfile
)
388 free_objfile (objfile
->separate_debug_objfile
);
391 if (objfile
->separate_debug_objfile_backlink
)
393 /* We freed the separate debug file, make sure the base objfile
394 doesn't reference it. */
395 objfile
->separate_debug_objfile_backlink
->separate_debug_objfile
= NULL
;
398 /* Remove any references to this objfile in the global value
400 preserve_values (objfile
);
402 /* First do any symbol file specific actions required when we are
403 finished with a particular symbol file. Note that if the objfile
404 is using reusable symbol information (via mmalloc) then each of
405 these routines is responsible for doing the correct thing, either
406 freeing things which are valid only during this particular gdb
407 execution, or leaving them to be reused during the next one. */
409 if (objfile
->sf
!= NULL
)
411 (*objfile
->sf
->sym_finish
) (objfile
);
414 /* We always close the bfd. */
416 if (objfile
->obfd
!= NULL
)
418 char *name
= bfd_get_filename (objfile
->obfd
);
419 if (!bfd_close (objfile
->obfd
))
420 warning (_("cannot close \"%s\": %s"),
421 name
, bfd_errmsg (bfd_get_error ()));
425 /* Remove it from the chain of all objfiles. */
427 unlink_objfile (objfile
);
429 /* If we are going to free the runtime common objfile, mark it
432 if (objfile
== rt_common_objfile
)
433 rt_common_objfile
= NULL
;
435 /* Before the symbol table code was redone to make it easier to
436 selectively load and remove information particular to a specific
437 linkage unit, gdb used to do these things whenever the monolithic
438 symbol table was blown away. How much still needs to be done
439 is unknown, but we play it safe for now and keep each action until
440 it is shown to be no longer needed. */
442 /* Not all our callers call clear_symtab_users (objfile_purge_solibs,
443 for example), so we need to call this here. */
444 clear_pc_function_cache ();
446 /* Clear globals which might have pointed into a removed objfile.
447 FIXME: It's not clear which of these are supposed to persist
448 between expressions and which ought to be reset each time. */
449 expression_context_block
= NULL
;
450 innermost_block
= NULL
;
452 /* Check to see if the current_source_symtab belongs to this objfile,
453 and if so, call clear_current_source_symtab_and_line. */
456 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
459 ALL_OBJFILE_SYMTABS (objfile
, s
)
461 if (s
== cursal
.symtab
)
462 clear_current_source_symtab_and_line ();
466 /* The last thing we do is free the objfile struct itself. */
468 objfile_free_data (objfile
);
469 if (objfile
->name
!= NULL
)
471 xfree (objfile
->name
);
473 if (objfile
->global_psymbols
.list
)
474 xfree (objfile
->global_psymbols
.list
);
475 if (objfile
->static_psymbols
.list
)
476 xfree (objfile
->static_psymbols
.list
);
477 /* Free the obstacks for non-reusable objfiles */
478 bcache_xfree (objfile
->psymbol_cache
);
479 bcache_xfree (objfile
->macro_cache
);
480 if (objfile
->demangled_names_hash
)
481 htab_delete (objfile
->demangled_names_hash
);
482 obstack_free (&objfile
->objfile_obstack
, 0);
488 do_free_objfile_cleanup (void *obj
)
494 make_cleanup_free_objfile (struct objfile
*obj
)
496 return make_cleanup (do_free_objfile_cleanup
, obj
);
499 /* Free all the object files at once and clean up their users. */
502 free_all_objfiles (void)
504 struct objfile
*objfile
, *temp
;
506 ALL_OBJFILES_SAFE (objfile
, temp
)
508 free_objfile (objfile
);
510 clear_symtab_users ();
513 /* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS
514 entries in new_offsets. */
516 objfile_relocate (struct objfile
*objfile
, struct section_offsets
*new_offsets
)
518 struct section_offsets
*delta
=
519 ((struct section_offsets
*)
520 alloca (SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
)));
524 int something_changed
= 0;
525 for (i
= 0; i
< objfile
->num_sections
; ++i
)
528 ANOFFSET (new_offsets
, i
) - ANOFFSET (objfile
->section_offsets
, i
);
529 if (ANOFFSET (delta
, i
) != 0)
530 something_changed
= 1;
532 if (!something_changed
)
536 /* OK, get all the symtabs. */
540 ALL_OBJFILE_SYMTABS (objfile
, s
)
543 struct blockvector
*bv
;
546 /* First the line table. */
550 for (i
= 0; i
< l
->nitems
; ++i
)
551 l
->item
[i
].pc
+= ANOFFSET (delta
, s
->block_line_section
);
554 /* Don't relocate a shared blockvector more than once. */
558 bv
= BLOCKVECTOR (s
);
559 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); ++i
)
563 struct dict_iterator iter
;
565 b
= BLOCKVECTOR_BLOCK (bv
, i
);
566 BLOCK_START (b
) += ANOFFSET (delta
, s
->block_line_section
);
567 BLOCK_END (b
) += ANOFFSET (delta
, s
->block_line_section
);
568 if (BLOCKVECTOR_MAP (bv
))
569 addrmap_relocate (BLOCKVECTOR_MAP (bv
),
570 ANOFFSET (delta
, s
->block_line_section
));
572 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
574 fixup_symbol_section (sym
, objfile
);
576 /* The RS6000 code from which this was taken skipped
577 any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN.
578 But I'm leaving out that test, on the theory that
579 they can't possibly pass the tests below. */
580 if ((SYMBOL_CLASS (sym
) == LOC_LABEL
581 || SYMBOL_CLASS (sym
) == LOC_STATIC
582 || SYMBOL_CLASS (sym
) == LOC_INDIRECT
)
583 && SYMBOL_SECTION (sym
) >= 0)
585 SYMBOL_VALUE_ADDRESS (sym
) +=
586 ANOFFSET (delta
, SYMBOL_SECTION (sym
));
594 struct partial_symtab
*p
;
596 ALL_OBJFILE_PSYMTABS (objfile
, p
)
598 p
->textlow
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
599 p
->texthigh
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
604 struct partial_symbol
**psym
;
606 for (psym
= objfile
->global_psymbols
.list
;
607 psym
< objfile
->global_psymbols
.next
;
610 fixup_psymbol_section (*psym
, objfile
);
611 if (SYMBOL_SECTION (*psym
) >= 0)
612 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
613 SYMBOL_SECTION (*psym
));
615 for (psym
= objfile
->static_psymbols
.list
;
616 psym
< objfile
->static_psymbols
.next
;
619 fixup_psymbol_section (*psym
, objfile
);
620 if (SYMBOL_SECTION (*psym
) >= 0)
621 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
622 SYMBOL_SECTION (*psym
));
627 struct minimal_symbol
*msym
;
628 ALL_OBJFILE_MSYMBOLS (objfile
, msym
)
629 if (SYMBOL_SECTION (msym
) >= 0)
630 SYMBOL_VALUE_ADDRESS (msym
) += ANOFFSET (delta
, SYMBOL_SECTION (msym
));
632 /* Relocating different sections by different amounts may cause the symbols
633 to be out of order. */
634 msymbols_sort (objfile
);
638 for (i
= 0; i
< objfile
->num_sections
; ++i
)
639 (objfile
->section_offsets
)->offsets
[i
] = ANOFFSET (new_offsets
, i
);
642 if (objfile
->ei
.entry_point
!= ~(CORE_ADDR
) 0)
644 /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT
645 only as a fallback. */
646 struct obj_section
*s
;
647 s
= find_pc_section (objfile
->ei
.entry_point
);
649 objfile
->ei
.entry_point
+= ANOFFSET (delta
, s
->the_bfd_section
->index
);
651 objfile
->ei
.entry_point
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
655 struct obj_section
*s
;
658 abfd
= objfile
->obfd
;
660 ALL_OBJFILE_OSECTIONS (objfile
, s
)
662 int idx
= s
->the_bfd_section
->index
;
664 s
->addr
+= ANOFFSET (delta
, idx
);
665 s
->endaddr
+= ANOFFSET (delta
, idx
);
669 /* Relocate breakpoints as necessary, after things are relocated. */
670 breakpoint_re_set ();
673 /* Many places in gdb want to test just to see if we have any partial
674 symbols available. This function returns zero if none are currently
675 available, nonzero otherwise. */
678 have_partial_symbols (void)
684 if (ofp
->psymtabs
!= NULL
)
692 /* Many places in gdb want to test just to see if we have any full
693 symbols available. This function returns zero if none are currently
694 available, nonzero otherwise. */
697 have_full_symbols (void)
703 if (ofp
->symtabs
!= NULL
)
712 /* This operations deletes all objfile entries that represent solibs that
713 weren't explicitly loaded by the user, via e.g., the add-symbol-file
717 objfile_purge_solibs (void)
719 struct objfile
*objf
;
720 struct objfile
*temp
;
722 ALL_OBJFILES_SAFE (objf
, temp
)
724 /* We assume that the solib package has been purged already, or will
727 if (!(objf
->flags
& OBJF_USERLOADED
) && (objf
->flags
& OBJF_SHARED
))
733 /* Many places in gdb want to test just to see if we have any minimal
734 symbols available. This function returns zero if none are currently
735 available, nonzero otherwise. */
738 have_minimal_symbols (void)
744 if (ofp
->minimal_symbol_count
> 0)
752 /* Returns a section whose range includes PC and SECTION, or NULL if
753 none found. Note the distinction between the return type, struct
754 obj_section (which is defined in gdb), and the input type "struct
755 bfd_section" (which is a bfd-defined data type). The obj_section
756 contains a pointer to the "struct bfd_section". */
759 find_pc_sect_section (CORE_ADDR pc
, struct bfd_section
*section
)
761 struct obj_section
*s
;
762 struct objfile
*objfile
;
764 ALL_OBJSECTIONS (objfile
, s
)
765 if ((section
== 0 || section
== s
->the_bfd_section
) &&
766 s
->addr
<= pc
&& pc
< s
->endaddr
)
772 /* Returns a section whose range includes PC or NULL if none found.
773 Backward compatibility, no section. */
776 find_pc_section (CORE_ADDR pc
)
778 return find_pc_sect_section (pc
, find_pc_mapped_section (pc
));
782 /* In SVR4, we recognize a trampoline by it's section name.
783 That is, if the pc is in a section named ".plt" then we are in
787 in_plt_section (CORE_ADDR pc
, char *name
)
789 struct obj_section
*s
;
792 s
= find_pc_section (pc
);
795 && s
->the_bfd_section
->name
!= NULL
796 && strcmp (s
->the_bfd_section
->name
, ".plt") == 0);
801 /* Keep a registry of per-objfile data-pointers required by other GDB
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 (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
++;
837 return (*curr
)->data
;
841 objfile_alloc_data (struct objfile
*objfile
)
843 gdb_assert (objfile
->data
== NULL
);
844 objfile
->num_data
= objfile_data_registry
.num_registrations
;
845 objfile
->data
= XCALLOC (objfile
->num_data
, void *);
849 objfile_free_data (struct objfile
*objfile
)
851 gdb_assert (objfile
->data
!= NULL
);
852 xfree (objfile
->data
);
853 objfile
->data
= NULL
;
857 clear_objfile_data (struct objfile
*objfile
)
859 gdb_assert (objfile
->data
!= NULL
);
860 memset (objfile
->data
, 0, objfile
->num_data
* sizeof (void *));
864 set_objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
,
867 gdb_assert (data
->index
< objfile
->num_data
);
868 objfile
->data
[data
->index
] = value
;
872 objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
)
874 gdb_assert (data
->index
< objfile
->num_data
);
875 return objfile
->data
[data
->index
];