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"
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
))
92 section
.objfile
= objfile
;
93 section
.the_bfd_section
= asect
;
94 section
.ovly_mapped
= 0;
95 section
.addr
= bfd_section_vma (abfd
, asect
);
96 section
.endaddr
= section
.addr
+ bfd_section_size (abfd
, asect
);
97 obstack_grow (&objfile
->objfile_obstack
, (char *) §ion
, sizeof (section
));
98 objfile
->sections_end
= (struct obj_section
*) (((unsigned long) objfile
->sections_end
) + 1);
101 /* Builds a section table for OBJFILE.
102 Returns 0 if OK, 1 on error (in which case bfd_error contains the
105 Note that while we are building the table, which goes into the
106 psymbol obstack, we hijack the sections_end pointer to instead hold
107 a count of the number of sections. When bfd_map_over_sections
108 returns, this count is used to compute the pointer to the end of
109 the sections table, which then overwrites the count.
111 Also note that the OFFSET and OVLY_MAPPED in each table entry
112 are initialized to zero.
114 Also note that if anything else writes to the psymbol obstack while
115 we are building the table, we're pretty much hosed. */
118 build_objfile_section_table (struct objfile
*objfile
)
120 /* objfile->sections can be already set when reading a mapped symbol
121 file. I believe that we do need to rebuild the section table in
122 this case (we rebuild other things derived from the bfd), but we
123 can't free the old one (it's in the objfile_obstack). So we just
124 waste some memory. */
126 objfile
->sections_end
= 0;
127 bfd_map_over_sections (objfile
->obfd
, add_to_objfile_sections
, (char *) objfile
);
128 objfile
->sections
= (struct obj_section
*)
129 obstack_finish (&objfile
->objfile_obstack
);
130 objfile
->sections_end
= objfile
->sections
+ (unsigned long) objfile
->sections_end
;
134 /* Given a pointer to an initialized bfd (ABFD) and some flag bits
135 allocate a new objfile struct, fill it in as best we can, link it
136 into the list of all known objfiles, and return a pointer to the
139 The FLAGS word contains various bits (OBJF_*) that can be taken as
140 requests for specific operations. Other bits like OBJF_SHARED are
141 simply copied through to the new objfile flags member. */
143 /* NOTE: carlton/2003-02-04: This function is called with args NULL, 0
144 by jv-lang.c, to create an artificial objfile used to hold
145 information about dynamically-loaded Java classes. Unfortunately,
146 that branch of this function doesn't get tested very frequently, so
147 it's prone to breakage. (E.g. at one time the name was set to NULL
148 in that situation, which broke a loop over all names in the dynamic
149 library loader.) If you change this function, please try to leave
150 things in a consistent state even if abfd is NULL. */
153 allocate_objfile (bfd
*abfd
, int flags
)
155 struct objfile
*objfile
= NULL
;
156 struct objfile
*last_one
= NULL
;
158 /* If we don't support mapped symbol files, didn't ask for the file to be
159 mapped, or failed to open the mapped file for some reason, then revert
160 back to an unmapped objfile. */
164 objfile
= (struct objfile
*) xmalloc (sizeof (struct objfile
));
165 memset (objfile
, 0, sizeof (struct objfile
));
166 objfile
->psymbol_cache
= bcache_xmalloc ();
167 objfile
->macro_cache
= bcache_xmalloc ();
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
);
171 terminate_minimal_symbol_table (objfile
);
174 objfile_alloc_data (objfile
);
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
180 objfile
->obfd
= abfd
;
181 if (objfile
->name
!= NULL
)
183 xfree (objfile
->name
);
187 /* Look up the gdbarch associated with the BFD. */
188 objfile
->gdbarch
= gdbarch_from_bfd (abfd
);
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 /* Retrieve the gdbarch associated with OBJFILE. */
239 get_objfile_arch (struct objfile
*objfile
)
241 return objfile
->gdbarch
;
244 /* Initialize entry point information for this objfile. */
247 init_entry_point_info (struct objfile
*objfile
)
249 /* Save startup file's range of PC addresses to help blockframe.c
250 decide where the bottom of the stack is. */
252 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
254 /* Executable file -- record its entry point so we'll recognize
255 the startup file because it contains the entry point. */
256 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
258 else if (bfd_get_file_flags (objfile
->obfd
) & DYNAMIC
259 && bfd_get_start_address (objfile
->obfd
) != 0)
260 /* Some shared libraries may have entry points set and be
261 runnable. There's no clear way to indicate this, so just check
262 for values other than zero. */
263 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
266 /* Examination of non-executable.o files. Short-circuit this stuff. */
267 objfile
->ei
.entry_point
= INVALID_ENTRY_POINT
;
271 /* Get current entry point address. */
274 entry_point_address (void)
276 return symfile_objfile
? symfile_objfile
->ei
.entry_point
: 0;
279 /* Create the terminating entry of OBJFILE's minimal symbol table.
280 If OBJFILE->msymbols is zero, allocate a single entry from
281 OBJFILE->objfile_obstack; otherwise, just initialize
282 OBJFILE->msymbols[OBJFILE->minimal_symbol_count]. */
284 terminate_minimal_symbol_table (struct objfile
*objfile
)
286 if (! objfile
->msymbols
)
287 objfile
->msymbols
= ((struct minimal_symbol
*)
288 obstack_alloc (&objfile
->objfile_obstack
,
289 sizeof (objfile
->msymbols
[0])));
292 struct minimal_symbol
*m
293 = &objfile
->msymbols
[objfile
->minimal_symbol_count
];
295 memset (m
, 0, sizeof (*m
));
296 /* Don't rely on these enumeration values being 0's. */
297 MSYMBOL_TYPE (m
) = mst_unknown
;
298 SYMBOL_INIT_LANGUAGE_SPECIFIC (m
, language_unknown
);
303 /* Put one object file before a specified on in the global list.
304 This can be used to make sure an object file is destroyed before
305 another when using ALL_OBJFILES_SAFE to free all objfiles. */
307 put_objfile_before (struct objfile
*objfile
, struct objfile
*before_this
)
309 struct objfile
**objp
;
311 unlink_objfile (objfile
);
313 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
315 if (*objp
== before_this
)
317 objfile
->next
= *objp
;
323 internal_error (__FILE__
, __LINE__
,
324 _("put_objfile_before: before objfile not in list"));
327 /* Put OBJFILE at the front of the list. */
330 objfile_to_front (struct objfile
*objfile
)
332 struct objfile
**objp
;
333 for (objp
= &object_files
; *objp
!= NULL
; objp
= &((*objp
)->next
))
335 if (*objp
== objfile
)
337 /* Unhook it from where it is. */
338 *objp
= objfile
->next
;
339 /* Put it in the front. */
340 objfile
->next
= object_files
;
341 object_files
= objfile
;
347 /* Unlink OBJFILE from the list of known objfiles, if it is found in the
350 It is not a bug, or error, to call this function if OBJFILE is not known
351 to be in the current list. This is done in the case of mapped objfiles,
352 for example, just to ensure that the mapped objfile doesn't appear twice
353 in the list. Since the list is threaded, linking in a mapped objfile
354 twice would create a circular list.
356 If OBJFILE turns out to be in the list, we zap it's NEXT pointer after
357 unlinking it, just to ensure that we have completely severed any linkages
358 between the OBJFILE and the list. */
361 unlink_objfile (struct objfile
*objfile
)
363 struct objfile
**objpp
;
365 for (objpp
= &object_files
; *objpp
!= NULL
; objpp
= &((*objpp
)->next
))
367 if (*objpp
== objfile
)
369 *objpp
= (*objpp
)->next
;
370 objfile
->next
= NULL
;
375 internal_error (__FILE__
, __LINE__
,
376 _("unlink_objfile: objfile already unlinked"));
380 /* Destroy an objfile and all the symtabs and psymtabs under it. Note
381 that as much as possible is allocated on the objfile_obstack
382 so that the memory can be efficiently freed.
384 Things which we do NOT free because they are not in malloc'd memory
385 or not in memory specific to the objfile include:
389 FIXME: If the objfile is using reusable symbol information (via mmalloc),
390 then we need to take into account the fact that more than one process
391 may be using the symbol information at the same time (when mmalloc is
392 extended to support cooperative locking). When more than one process
393 is using the mapped symbol info, we need to be more careful about when
394 we free objects in the reusable area. */
397 free_objfile (struct objfile
*objfile
)
399 if (objfile
->separate_debug_objfile
)
401 free_objfile (objfile
->separate_debug_objfile
);
404 if (objfile
->separate_debug_objfile_backlink
)
406 /* We freed the separate debug file, make sure the base objfile
407 doesn't reference it. */
408 objfile
->separate_debug_objfile_backlink
->separate_debug_objfile
= NULL
;
411 /* Remove any references to this objfile in the global value
413 preserve_values (objfile
);
415 /* First do any symbol file specific actions required when we are
416 finished with a particular symbol file. Note that if the objfile
417 is using reusable symbol information (via mmalloc) then each of
418 these routines is responsible for doing the correct thing, either
419 freeing things which are valid only during this particular gdb
420 execution, or leaving them to be reused during the next one. */
422 if (objfile
->sf
!= NULL
)
424 (*objfile
->sf
->sym_finish
) (objfile
);
427 /* We always close the bfd. */
429 if (objfile
->obfd
!= NULL
)
431 char *name
= bfd_get_filename (objfile
->obfd
);
432 if (!bfd_close (objfile
->obfd
))
433 warning (_("cannot close \"%s\": %s"),
434 name
, bfd_errmsg (bfd_get_error ()));
438 /* Remove it from the chain of all objfiles. */
440 unlink_objfile (objfile
);
442 /* If we are going to free the runtime common objfile, mark it
445 if (objfile
== rt_common_objfile
)
446 rt_common_objfile
= NULL
;
448 /* Before the symbol table code was redone to make it easier to
449 selectively load and remove information particular to a specific
450 linkage unit, gdb used to do these things whenever the monolithic
451 symbol table was blown away. How much still needs to be done
452 is unknown, but we play it safe for now and keep each action until
453 it is shown to be no longer needed. */
455 /* Not all our callers call clear_symtab_users (objfile_purge_solibs,
456 for example), so we need to call this here. */
457 clear_pc_function_cache ();
459 /* Clear globals which might have pointed into a removed objfile.
460 FIXME: It's not clear which of these are supposed to persist
461 between expressions and which ought to be reset each time. */
462 expression_context_block
= NULL
;
463 innermost_block
= NULL
;
465 /* Check to see if the current_source_symtab belongs to this objfile,
466 and if so, call clear_current_source_symtab_and_line. */
469 struct symtab_and_line cursal
= get_current_source_symtab_and_line ();
472 ALL_OBJFILE_SYMTABS (objfile
, s
)
474 if (s
== cursal
.symtab
)
475 clear_current_source_symtab_and_line ();
479 /* The last thing we do is free the objfile struct itself. */
481 objfile_free_data (objfile
);
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 for (i
= 0; i
< BLOCKVECTOR_NBLOCKS (bv
); ++i
)
577 struct dict_iterator iter
;
579 b
= BLOCKVECTOR_BLOCK (bv
, i
);
580 BLOCK_START (b
) += ANOFFSET (delta
, s
->block_line_section
);
581 BLOCK_END (b
) += ANOFFSET (delta
, s
->block_line_section
);
582 if (BLOCKVECTOR_MAP (bv
))
583 addrmap_relocate (BLOCKVECTOR_MAP (bv
),
584 ANOFFSET (delta
, s
->block_line_section
));
586 ALL_BLOCK_SYMBOLS (b
, iter
, sym
)
588 fixup_symbol_section (sym
, objfile
);
590 /* The RS6000 code from which this was taken skipped
591 any symbols in STRUCT_DOMAIN or UNDEF_DOMAIN.
592 But I'm leaving out that test, on the theory that
593 they can't possibly pass the tests below. */
594 if ((SYMBOL_CLASS (sym
) == LOC_LABEL
595 || SYMBOL_CLASS (sym
) == LOC_STATIC
)
596 && SYMBOL_SECTION (sym
) >= 0)
598 SYMBOL_VALUE_ADDRESS (sym
) +=
599 ANOFFSET (delta
, SYMBOL_SECTION (sym
));
607 struct partial_symtab
*p
;
609 ALL_OBJFILE_PSYMTABS (objfile
, p
)
611 p
->textlow
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
612 p
->texthigh
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
617 struct partial_symbol
**psym
;
619 for (psym
= objfile
->global_psymbols
.list
;
620 psym
< objfile
->global_psymbols
.next
;
623 fixup_psymbol_section (*psym
, objfile
);
624 if (SYMBOL_SECTION (*psym
) >= 0)
625 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
626 SYMBOL_SECTION (*psym
));
628 for (psym
= objfile
->static_psymbols
.list
;
629 psym
< objfile
->static_psymbols
.next
;
632 fixup_psymbol_section (*psym
, objfile
);
633 if (SYMBOL_SECTION (*psym
) >= 0)
634 SYMBOL_VALUE_ADDRESS (*psym
) += ANOFFSET (delta
,
635 SYMBOL_SECTION (*psym
));
640 struct minimal_symbol
*msym
;
641 ALL_OBJFILE_MSYMBOLS (objfile
, msym
)
642 if (SYMBOL_SECTION (msym
) >= 0)
643 SYMBOL_VALUE_ADDRESS (msym
) += ANOFFSET (delta
, SYMBOL_SECTION (msym
));
645 /* Relocating different sections by different amounts may cause the symbols
646 to be out of order. */
647 msymbols_sort (objfile
);
651 for (i
= 0; i
< objfile
->num_sections
; ++i
)
652 (objfile
->section_offsets
)->offsets
[i
] = ANOFFSET (new_offsets
, i
);
655 if (objfile
->ei
.entry_point
!= ~(CORE_ADDR
) 0)
657 /* Relocate ei.entry_point with its section offset, use SECT_OFF_TEXT
658 only as a fallback. */
659 struct obj_section
*s
;
660 s
= find_pc_section (objfile
->ei
.entry_point
);
662 objfile
->ei
.entry_point
+= ANOFFSET (delta
, s
->the_bfd_section
->index
);
664 objfile
->ei
.entry_point
+= ANOFFSET (delta
, SECT_OFF_TEXT (objfile
));
668 struct obj_section
*s
;
671 abfd
= objfile
->obfd
;
673 ALL_OBJFILE_OSECTIONS (objfile
, s
)
675 int idx
= s
->the_bfd_section
->index
;
677 s
->addr
+= ANOFFSET (delta
, idx
);
678 s
->endaddr
+= ANOFFSET (delta
, idx
);
682 /* Update the table in exec_ops, used to read memory. */
683 ALL_OBJFILE_OSECTIONS (objfile
, s
)
685 int idx
= s
->the_bfd_section
->index
;
687 exec_set_section_address (bfd_get_filename (objfile
->obfd
), idx
,
691 /* Relocate breakpoints as necessary, after things are relocated. */
692 breakpoint_re_set ();
695 /* Many places in gdb want to test just to see if we have any partial
696 symbols available. This function returns zero if none are currently
697 available, nonzero otherwise. */
700 have_partial_symbols (void)
706 if (ofp
->psymtabs
!= NULL
)
714 /* Many places in gdb want to test just to see if we have any full
715 symbols available. This function returns zero if none are currently
716 available, nonzero otherwise. */
719 have_full_symbols (void)
725 if (ofp
->symtabs
!= NULL
)
734 /* This operations deletes all objfile entries that represent solibs that
735 weren't explicitly loaded by the user, via e.g., the add-symbol-file
739 objfile_purge_solibs (void)
741 struct objfile
*objf
;
742 struct objfile
*temp
;
744 ALL_OBJFILES_SAFE (objf
, temp
)
746 /* We assume that the solib package has been purged already, or will
749 if (!(objf
->flags
& OBJF_USERLOADED
) && (objf
->flags
& OBJF_SHARED
))
755 /* Many places in gdb want to test just to see if we have any minimal
756 symbols available. This function returns zero if none are currently
757 available, nonzero otherwise. */
760 have_minimal_symbols (void)
766 if (ofp
->minimal_symbol_count
> 0)
774 /* Returns a section whose range includes PC and SECTION, or NULL if
775 none found. Note the distinction between the return type, struct
776 obj_section (which is defined in gdb), and the input type "struct
777 bfd_section" (which is a bfd-defined data type). The obj_section
778 contains a pointer to the "struct bfd_section". */
781 find_pc_sect_section (CORE_ADDR pc
, struct bfd_section
*section
)
783 struct obj_section
*s
;
784 struct objfile
*objfile
;
786 ALL_OBJSECTIONS (objfile
, s
)
787 if ((section
== 0 || section
== s
->the_bfd_section
) &&
788 s
->addr
<= pc
&& pc
< s
->endaddr
)
794 /* Returns a section whose range includes PC or NULL if none found.
795 Backward compatibility, no section. */
798 find_pc_section (CORE_ADDR pc
)
800 return find_pc_sect_section (pc
, find_pc_mapped_section (pc
));
804 /* In SVR4, we recognize a trampoline by it's section name.
805 That is, if the pc is in a section named ".plt" then we are in
809 in_plt_section (CORE_ADDR pc
, char *name
)
811 struct obj_section
*s
;
814 s
= find_pc_section (pc
);
817 && s
->the_bfd_section
->name
!= NULL
818 && strcmp (s
->the_bfd_section
->name
, ".plt") == 0);
823 /* Keep a registry of per-objfile data-pointers required by other GDB
829 void (*cleanup
) (struct objfile
*, void *);
832 struct objfile_data_registration
834 struct objfile_data
*data
;
835 struct objfile_data_registration
*next
;
838 struct objfile_data_registry
840 struct objfile_data_registration
*registrations
;
841 unsigned num_registrations
;
844 static struct objfile_data_registry objfile_data_registry
= { NULL
, 0 };
846 const struct objfile_data
*
847 register_objfile_data_with_cleanup (void (*cleanup
) (struct objfile
*, void *))
849 struct objfile_data_registration
**curr
;
851 /* Append new registration. */
852 for (curr
= &objfile_data_registry
.registrations
;
853 *curr
!= NULL
; curr
= &(*curr
)->next
);
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 (*curr
)->data
->cleanup
= cleanup
;
861 return (*curr
)->data
;
864 const struct objfile_data
*
865 register_objfile_data (void)
867 return register_objfile_data_with_cleanup (NULL
);
871 objfile_alloc_data (struct objfile
*objfile
)
873 gdb_assert (objfile
->data
== NULL
);
874 objfile
->num_data
= objfile_data_registry
.num_registrations
;
875 objfile
->data
= XCALLOC (objfile
->num_data
, void *);
879 objfile_free_data (struct objfile
*objfile
)
881 gdb_assert (objfile
->data
!= NULL
);
882 clear_objfile_data (objfile
);
883 xfree (objfile
->data
);
884 objfile
->data
= NULL
;
888 clear_objfile_data (struct objfile
*objfile
)
890 struct objfile_data_registration
*registration
;
893 gdb_assert (objfile
->data
!= NULL
);
895 for (registration
= objfile_data_registry
.registrations
, i
= 0;
896 i
< objfile
->num_data
;
897 registration
= registration
->next
, i
++)
898 if (objfile
->data
[i
] != NULL
&& registration
->data
->cleanup
)
899 registration
->data
->cleanup (objfile
, objfile
->data
[i
]);
901 memset (objfile
->data
, 0, objfile
->num_data
* sizeof (void *));
905 set_objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
,
908 gdb_assert (data
->index
< objfile
->num_data
);
909 objfile
->data
[data
->index
] = value
;
913 objfile_data (struct objfile
*objfile
, const struct objfile_data
*data
)
915 gdb_assert (data
->index
< objfile
->num_data
);
916 return objfile
->data
[data
->index
];