1 /* Generic symbol file reading for the GNU debugger, GDB.
3 Copyright (C) 1990-2013 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
35 #include "breakpoint.h"
37 #include "complaints.h"
41 #include "filenames.h" /* for DOSish file names */
42 #include "gdb-stabs.h"
43 #include "gdb_obstack.h"
44 #include "completer.h"
47 #include "readline/readline.h"
48 #include "gdb_assert.h"
52 #include "parser-defs.h"
60 #include <sys/types.h>
62 #include "gdb_string.h"
70 int (*deprecated_ui_load_progress_hook
) (const char *section
,
72 void (*deprecated_show_load_progress
) (const char *section
,
73 unsigned long section_sent
,
74 unsigned long section_size
,
75 unsigned long total_sent
,
76 unsigned long total_size
);
77 void (*deprecated_pre_add_symbol_hook
) (const char *);
78 void (*deprecated_post_add_symbol_hook
) (void);
80 static void clear_symtab_users_cleanup (void *ignore
);
82 /* Global variables owned by this file. */
83 int readnow_symbol_files
; /* Read full symbols immediately. */
85 /* Functions this file defines. */
87 static void load_command (char *, int);
89 static void symbol_file_add_main_1 (char *args
, int from_tty
, int flags
);
91 static void add_symbol_file_command (char *, int);
93 bfd
*symfile_bfd_open (char *);
95 int get_section_index (struct objfile
*, char *);
97 static const struct sym_fns
*find_sym_fns (bfd
*);
99 static void decrement_reading_symtab (void *);
101 static void overlay_invalidate_all (void);
103 static void overlay_auto_command (char *, int);
105 static void overlay_manual_command (char *, int);
107 static void overlay_off_command (char *, int);
109 static void overlay_load_command (char *, int);
111 static void overlay_command (char *, int);
113 static void simple_free_overlay_table (void);
115 static void read_target_long_array (CORE_ADDR
, unsigned int *, int, int,
118 static int simple_read_overlay_table (void);
120 static int simple_overlay_update_1 (struct obj_section
*);
122 static void add_filename_language (char *ext
, enum language lang
);
124 static void info_ext_lang_command (char *args
, int from_tty
);
126 static void init_filename_language_table (void);
128 static void symfile_find_segment_sections (struct objfile
*objfile
);
130 void _initialize_symfile (void);
132 /* List of all available sym_fns. On gdb startup, each object file reader
133 calls add_symtab_fns() to register information on each format it is
136 typedef const struct sym_fns
*sym_fns_ptr
;
137 DEF_VEC_P (sym_fns_ptr
);
139 static VEC (sym_fns_ptr
) *symtab_fns
= NULL
;
141 /* If non-zero, shared library symbols will be added automatically
142 when the inferior is created, new libraries are loaded, or when
143 attaching to the inferior. This is almost always what users will
144 want to have happen; but for very large programs, the startup time
145 will be excessive, and so if this is a problem, the user can clear
146 this flag and then add the shared library symbols as needed. Note
147 that there is a potential for confusion, since if the shared
148 library symbols are not loaded, commands like "info fun" will *not*
149 report all the functions that are actually present. */
151 int auto_solib_add
= 1;
154 /* Concatenate NULL terminated variable argument list of `const char *'
155 strings; return the new string. Space is found in the OBSTACKP.
156 Argument list must be terminated by a sentinel expression `(char *)
160 obconcat (struct obstack
*obstackp
, ...)
164 va_start (ap
, obstackp
);
167 const char *s
= va_arg (ap
, const char *);
172 obstack_grow_str (obstackp
, s
);
175 obstack_1grow (obstackp
, 0);
177 return obstack_finish (obstackp
);
180 /* True if we are reading a symbol table. */
182 int currently_reading_symtab
= 0;
185 decrement_reading_symtab (void *dummy
)
187 currently_reading_symtab
--;
190 /* Increment currently_reading_symtab and return a cleanup that can be
191 used to decrement it. */
193 increment_reading_symtab (void)
195 ++currently_reading_symtab
;
196 return make_cleanup (decrement_reading_symtab
, NULL
);
199 /* Remember the lowest-addressed loadable section we've seen.
200 This function is called via bfd_map_over_sections.
202 In case of equal vmas, the section with the largest size becomes the
203 lowest-addressed loadable section.
205 If the vmas and sizes are equal, the last section is considered the
206 lowest-addressed loadable section. */
209 find_lowest_section (bfd
*abfd
, asection
*sect
, void *obj
)
211 asection
**lowest
= (asection
**) obj
;
213 if (0 == (bfd_get_section_flags (abfd
, sect
) & (SEC_ALLOC
| SEC_LOAD
)))
216 *lowest
= sect
; /* First loadable section */
217 else if (bfd_section_vma (abfd
, *lowest
) > bfd_section_vma (abfd
, sect
))
218 *lowest
= sect
; /* A lower loadable section */
219 else if (bfd_section_vma (abfd
, *lowest
) == bfd_section_vma (abfd
, sect
)
220 && (bfd_section_size (abfd
, (*lowest
))
221 <= bfd_section_size (abfd
, sect
)))
225 /* Create a new section_addr_info, with room for NUM_SECTIONS. */
227 struct section_addr_info
*
228 alloc_section_addr_info (size_t num_sections
)
230 struct section_addr_info
*sap
;
233 size
= (sizeof (struct section_addr_info
)
234 + sizeof (struct other_sections
) * (num_sections
- 1));
235 sap
= (struct section_addr_info
*) xmalloc (size
);
236 memset (sap
, 0, size
);
237 sap
->num_sections
= num_sections
;
242 /* Build (allocate and populate) a section_addr_info struct from
243 an existing section table. */
245 extern struct section_addr_info
*
246 build_section_addr_info_from_section_table (const struct target_section
*start
,
247 const struct target_section
*end
)
249 struct section_addr_info
*sap
;
250 const struct target_section
*stp
;
253 sap
= alloc_section_addr_info (end
- start
);
255 for (stp
= start
, oidx
= 0; stp
!= end
; stp
++)
257 if (bfd_get_section_flags (stp
->bfd
,
258 stp
->the_bfd_section
) & (SEC_ALLOC
| SEC_LOAD
)
259 && oidx
< end
- start
)
261 sap
->other
[oidx
].addr
= stp
->addr
;
262 sap
->other
[oidx
].name
263 = xstrdup (bfd_section_name (stp
->bfd
, stp
->the_bfd_section
));
264 sap
->other
[oidx
].sectindex
= stp
->the_bfd_section
->index
;
272 /* Create a section_addr_info from section offsets in ABFD. */
274 static struct section_addr_info
*
275 build_section_addr_info_from_bfd (bfd
*abfd
)
277 struct section_addr_info
*sap
;
279 struct bfd_section
*sec
;
281 sap
= alloc_section_addr_info (bfd_count_sections (abfd
));
282 for (i
= 0, sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
283 if (bfd_get_section_flags (abfd
, sec
) & (SEC_ALLOC
| SEC_LOAD
))
285 sap
->other
[i
].addr
= bfd_get_section_vma (abfd
, sec
);
286 sap
->other
[i
].name
= xstrdup (bfd_get_section_name (abfd
, sec
));
287 sap
->other
[i
].sectindex
= sec
->index
;
293 /* Create a section_addr_info from section offsets in OBJFILE. */
295 struct section_addr_info
*
296 build_section_addr_info_from_objfile (const struct objfile
*objfile
)
298 struct section_addr_info
*sap
;
301 /* Before reread_symbols gets rewritten it is not safe to call:
302 gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd));
304 sap
= build_section_addr_info_from_bfd (objfile
->obfd
);
305 for (i
= 0; i
< sap
->num_sections
&& sap
->other
[i
].name
; i
++)
307 int sectindex
= sap
->other
[i
].sectindex
;
309 sap
->other
[i
].addr
+= objfile
->section_offsets
->offsets
[sectindex
];
314 /* Free all memory allocated by build_section_addr_info_from_section_table. */
317 free_section_addr_info (struct section_addr_info
*sap
)
321 for (idx
= 0; idx
< sap
->num_sections
; idx
++)
322 if (sap
->other
[idx
].name
)
323 xfree (sap
->other
[idx
].name
);
328 /* Initialize OBJFILE's sect_index_* members. */
330 init_objfile_sect_indices (struct objfile
*objfile
)
335 sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
337 objfile
->sect_index_text
= sect
->index
;
339 sect
= bfd_get_section_by_name (objfile
->obfd
, ".data");
341 objfile
->sect_index_data
= sect
->index
;
343 sect
= bfd_get_section_by_name (objfile
->obfd
, ".bss");
345 objfile
->sect_index_bss
= sect
->index
;
347 sect
= bfd_get_section_by_name (objfile
->obfd
, ".rodata");
349 objfile
->sect_index_rodata
= sect
->index
;
351 /* This is where things get really weird... We MUST have valid
352 indices for the various sect_index_* members or gdb will abort.
353 So if for example, there is no ".text" section, we have to
354 accomodate that. First, check for a file with the standard
355 one or two segments. */
357 symfile_find_segment_sections (objfile
);
359 /* Except when explicitly adding symbol files at some address,
360 section_offsets contains nothing but zeros, so it doesn't matter
361 which slot in section_offsets the individual sect_index_* members
362 index into. So if they are all zero, it is safe to just point
363 all the currently uninitialized indices to the first slot. But
364 beware: if this is the main executable, it may be relocated
365 later, e.g. by the remote qOffsets packet, and then this will
366 be wrong! That's why we try segments first. */
368 for (i
= 0; i
< objfile
->num_sections
; i
++)
370 if (ANOFFSET (objfile
->section_offsets
, i
) != 0)
375 if (i
== objfile
->num_sections
)
377 if (objfile
->sect_index_text
== -1)
378 objfile
->sect_index_text
= 0;
379 if (objfile
->sect_index_data
== -1)
380 objfile
->sect_index_data
= 0;
381 if (objfile
->sect_index_bss
== -1)
382 objfile
->sect_index_bss
= 0;
383 if (objfile
->sect_index_rodata
== -1)
384 objfile
->sect_index_rodata
= 0;
388 /* The arguments to place_section. */
390 struct place_section_arg
392 struct section_offsets
*offsets
;
396 /* Find a unique offset to use for loadable section SECT if
397 the user did not provide an offset. */
400 place_section (bfd
*abfd
, asection
*sect
, void *obj
)
402 struct place_section_arg
*arg
= obj
;
403 CORE_ADDR
*offsets
= arg
->offsets
->offsets
, start_addr
;
405 ULONGEST align
= ((ULONGEST
) 1) << bfd_get_section_alignment (abfd
, sect
);
407 /* We are only interested in allocated sections. */
408 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
411 /* If the user specified an offset, honor it. */
412 if (offsets
[sect
->index
] != 0)
415 /* Otherwise, let's try to find a place for the section. */
416 start_addr
= (arg
->lowest
+ align
- 1) & -align
;
423 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
425 int indx
= cur_sec
->index
;
427 /* We don't need to compare against ourself. */
431 /* We can only conflict with allocated sections. */
432 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
435 /* If the section offset is 0, either the section has not been placed
436 yet, or it was the lowest section placed (in which case LOWEST
437 will be past its end). */
438 if (offsets
[indx
] == 0)
441 /* If this section would overlap us, then we must move up. */
442 if (start_addr
+ bfd_get_section_size (sect
) > offsets
[indx
]
443 && start_addr
< offsets
[indx
] + bfd_get_section_size (cur_sec
))
445 start_addr
= offsets
[indx
] + bfd_get_section_size (cur_sec
);
446 start_addr
= (start_addr
+ align
- 1) & -align
;
451 /* Otherwise, we appear to be OK. So far. */
456 offsets
[sect
->index
] = start_addr
;
457 arg
->lowest
= start_addr
+ bfd_get_section_size (sect
);
460 /* Store struct section_addr_info as prepared (made relative and with SECTINDEX
461 filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS
465 relative_addr_info_to_section_offsets (struct section_offsets
*section_offsets
,
467 struct section_addr_info
*addrs
)
471 memset (section_offsets
, 0, SIZEOF_N_SECTION_OFFSETS (num_sections
));
473 /* Now calculate offsets for section that were specified by the caller. */
474 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
476 struct other_sections
*osp
;
478 osp
= &addrs
->other
[i
];
479 if (osp
->sectindex
== -1)
482 /* Record all sections in offsets. */
483 /* The section_offsets in the objfile are here filled in using
485 section_offsets
->offsets
[osp
->sectindex
] = osp
->addr
;
489 /* Transform section name S for a name comparison. prelink can split section
490 `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly
491 prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address
492 of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss'
493 (`.sbss') section has invalid (increased) virtual address. */
496 addr_section_name (const char *s
)
498 if (strcmp (s
, ".dynbss") == 0)
500 if (strcmp (s
, ".sdynbss") == 0)
506 /* qsort comparator for addrs_section_sort. Sort entries in ascending order by
507 their (name, sectindex) pair. sectindex makes the sort by name stable. */
510 addrs_section_compar (const void *ap
, const void *bp
)
512 const struct other_sections
*a
= *((struct other_sections
**) ap
);
513 const struct other_sections
*b
= *((struct other_sections
**) bp
);
516 retval
= strcmp (addr_section_name (a
->name
), addr_section_name (b
->name
));
520 return a
->sectindex
- b
->sectindex
;
523 /* Provide sorted array of pointers to sections of ADDRS. The array is
524 terminated by NULL. Caller is responsible to call xfree for it. */
526 static struct other_sections
**
527 addrs_section_sort (struct section_addr_info
*addrs
)
529 struct other_sections
**array
;
532 /* `+ 1' for the NULL terminator. */
533 array
= xmalloc (sizeof (*array
) * (addrs
->num_sections
+ 1));
534 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
535 array
[i
] = &addrs
->other
[i
];
538 qsort (array
, i
, sizeof (*array
), addrs_section_compar
);
543 /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
544 also SECTINDEXes specific to ABFD there. This function can be used to
545 rebase ADDRS to start referencing different BFD than before. */
548 addr_info_make_relative (struct section_addr_info
*addrs
, bfd
*abfd
)
550 asection
*lower_sect
;
551 CORE_ADDR lower_offset
;
553 struct cleanup
*my_cleanup
;
554 struct section_addr_info
*abfd_addrs
;
555 struct other_sections
**addrs_sorted
, **abfd_addrs_sorted
;
556 struct other_sections
**addrs_to_abfd_addrs
;
558 /* Find lowest loadable section to be used as starting point for
559 continguous sections. */
561 bfd_map_over_sections (abfd
, find_lowest_section
, &lower_sect
);
562 if (lower_sect
== NULL
)
564 warning (_("no loadable sections found in added symbol-file %s"),
565 bfd_get_filename (abfd
));
569 lower_offset
= bfd_section_vma (bfd_get_filename (abfd
), lower_sect
);
571 /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections
572 in ABFD. Section names are not unique - there can be multiple sections of
573 the same name. Also the sections of the same name do not have to be
574 adjacent to each other. Some sections may be present only in one of the
575 files. Even sections present in both files do not have to be in the same
578 Use stable sort by name for the sections in both files. Then linearly
579 scan both lists matching as most of the entries as possible. */
581 addrs_sorted
= addrs_section_sort (addrs
);
582 my_cleanup
= make_cleanup (xfree
, addrs_sorted
);
584 abfd_addrs
= build_section_addr_info_from_bfd (abfd
);
585 make_cleanup_free_section_addr_info (abfd_addrs
);
586 abfd_addrs_sorted
= addrs_section_sort (abfd_addrs
);
587 make_cleanup (xfree
, abfd_addrs_sorted
);
589 /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and
590 ABFD_ADDRS_SORTED. */
592 addrs_to_abfd_addrs
= xzalloc (sizeof (*addrs_to_abfd_addrs
)
593 * addrs
->num_sections
);
594 make_cleanup (xfree
, addrs_to_abfd_addrs
);
596 while (*addrs_sorted
)
598 const char *sect_name
= addr_section_name ((*addrs_sorted
)->name
);
600 while (*abfd_addrs_sorted
601 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
605 if (*abfd_addrs_sorted
606 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
611 /* Make the found item directly addressable from ADDRS. */
612 index_in_addrs
= *addrs_sorted
- addrs
->other
;
613 gdb_assert (addrs_to_abfd_addrs
[index_in_addrs
] == NULL
);
614 addrs_to_abfd_addrs
[index_in_addrs
] = *abfd_addrs_sorted
;
616 /* Never use the same ABFD entry twice. */
623 /* Calculate offsets for the loadable sections.
624 FIXME! Sections must be in order of increasing loadable section
625 so that contiguous sections can use the lower-offset!!!
627 Adjust offsets if the segments are not contiguous.
628 If the section is contiguous, its offset should be set to
629 the offset of the highest loadable section lower than it
630 (the loadable section directly below it in memory).
631 this_offset = lower_offset = lower_addr - lower_orig_addr */
633 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
635 struct other_sections
*sect
= addrs_to_abfd_addrs
[i
];
639 /* This is the index used by BFD. */
640 addrs
->other
[i
].sectindex
= sect
->sectindex
;
642 if (addrs
->other
[i
].addr
!= 0)
644 addrs
->other
[i
].addr
-= sect
->addr
;
645 lower_offset
= addrs
->other
[i
].addr
;
648 addrs
->other
[i
].addr
= lower_offset
;
652 /* addr_section_name transformation is not used for SECT_NAME. */
653 const char *sect_name
= addrs
->other
[i
].name
;
655 /* This section does not exist in ABFD, which is normally
656 unexpected and we want to issue a warning.
658 However, the ELF prelinker does create a few sections which are
659 marked in the main executable as loadable (they are loaded in
660 memory from the DYNAMIC segment) and yet are not present in
661 separate debug info files. This is fine, and should not cause
662 a warning. Shared libraries contain just the section
663 ".gnu.liblist" but it is not marked as loadable there. There is
664 no other way to identify them than by their name as the sections
665 created by prelink have no special flags.
667 For the sections `.bss' and `.sbss' see addr_section_name. */
669 if (!(strcmp (sect_name
, ".gnu.liblist") == 0
670 || strcmp (sect_name
, ".gnu.conflict") == 0
671 || (strcmp (sect_name
, ".bss") == 0
673 && strcmp (addrs
->other
[i
- 1].name
, ".dynbss") == 0
674 && addrs_to_abfd_addrs
[i
- 1] != NULL
)
675 || (strcmp (sect_name
, ".sbss") == 0
677 && strcmp (addrs
->other
[i
- 1].name
, ".sdynbss") == 0
678 && addrs_to_abfd_addrs
[i
- 1] != NULL
)))
679 warning (_("section %s not found in %s"), sect_name
,
680 bfd_get_filename (abfd
));
682 addrs
->other
[i
].addr
= 0;
683 addrs
->other
[i
].sectindex
= -1;
687 do_cleanups (my_cleanup
);
690 /* Parse the user's idea of an offset for dynamic linking, into our idea
691 of how to represent it for fast symbol reading. This is the default
692 version of the sym_fns.sym_offsets function for symbol readers that
693 don't need to do anything special. It allocates a section_offsets table
694 for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
697 default_symfile_offsets (struct objfile
*objfile
,
698 struct section_addr_info
*addrs
)
700 objfile
->num_sections
= bfd_count_sections (objfile
->obfd
);
701 objfile
->section_offsets
= (struct section_offsets
*)
702 obstack_alloc (&objfile
->objfile_obstack
,
703 SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
));
704 relative_addr_info_to_section_offsets (objfile
->section_offsets
,
705 objfile
->num_sections
, addrs
);
707 /* For relocatable files, all loadable sections will start at zero.
708 The zero is meaningless, so try to pick arbitrary addresses such
709 that no loadable sections overlap. This algorithm is quadratic,
710 but the number of sections in a single object file is generally
712 if ((bfd_get_file_flags (objfile
->obfd
) & (EXEC_P
| DYNAMIC
)) == 0)
714 struct place_section_arg arg
;
715 bfd
*abfd
= objfile
->obfd
;
718 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
719 /* We do not expect this to happen; just skip this step if the
720 relocatable file has a section with an assigned VMA. */
721 if (bfd_section_vma (abfd
, cur_sec
) != 0)
726 CORE_ADDR
*offsets
= objfile
->section_offsets
->offsets
;
728 /* Pick non-overlapping offsets for sections the user did not
730 arg
.offsets
= objfile
->section_offsets
;
732 bfd_map_over_sections (objfile
->obfd
, place_section
, &arg
);
734 /* Correctly filling in the section offsets is not quite
735 enough. Relocatable files have two properties that
736 (most) shared objects do not:
738 - Their debug information will contain relocations. Some
739 shared libraries do also, but many do not, so this can not
742 - If there are multiple code sections they will be loaded
743 at different relative addresses in memory than they are
744 in the objfile, since all sections in the file will start
747 Because GDB has very limited ability to map from an
748 address in debug info to the correct code section,
749 it relies on adding SECT_OFF_TEXT to things which might be
750 code. If we clear all the section offsets, and set the
751 section VMAs instead, then symfile_relocate_debug_section
752 will return meaningful debug information pointing at the
755 GDB has too many different data structures for section
756 addresses - a bfd, objfile, and so_list all have section
757 tables, as does exec_ops. Some of these could probably
760 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
;
761 cur_sec
= cur_sec
->next
)
763 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
766 bfd_set_section_vma (abfd
, cur_sec
, offsets
[cur_sec
->index
]);
767 exec_set_section_address (bfd_get_filename (abfd
),
769 offsets
[cur_sec
->index
]);
770 offsets
[cur_sec
->index
] = 0;
775 /* Remember the bfd indexes for the .text, .data, .bss and
777 init_objfile_sect_indices (objfile
);
781 /* Divide the file into segments, which are individual relocatable units.
782 This is the default version of the sym_fns.sym_segments function for
783 symbol readers that do not have an explicit representation of segments.
784 It assumes that object files do not have segments, and fully linked
785 files have a single segment. */
787 struct symfile_segment_data
*
788 default_symfile_segments (bfd
*abfd
)
792 struct symfile_segment_data
*data
;
795 /* Relocatable files contain enough information to position each
796 loadable section independently; they should not be relocated
798 if ((bfd_get_file_flags (abfd
) & (EXEC_P
| DYNAMIC
)) == 0)
801 /* Make sure there is at least one loadable section in the file. */
802 for (sect
= abfd
->sections
; sect
!= NULL
; sect
= sect
->next
)
804 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
812 low
= bfd_get_section_vma (abfd
, sect
);
813 high
= low
+ bfd_get_section_size (sect
);
815 data
= XZALLOC (struct symfile_segment_data
);
816 data
->num_segments
= 1;
817 data
->segment_bases
= XCALLOC (1, CORE_ADDR
);
818 data
->segment_sizes
= XCALLOC (1, CORE_ADDR
);
820 num_sections
= bfd_count_sections (abfd
);
821 data
->segment_info
= XCALLOC (num_sections
, int);
823 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
827 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
830 vma
= bfd_get_section_vma (abfd
, sect
);
833 if (vma
+ bfd_get_section_size (sect
) > high
)
834 high
= vma
+ bfd_get_section_size (sect
);
836 data
->segment_info
[i
] = 1;
839 data
->segment_bases
[0] = low
;
840 data
->segment_sizes
[0] = high
- low
;
845 /* This is a convenience function to call sym_read for OBJFILE and
846 possibly force the partial symbols to be read. */
849 read_symbols (struct objfile
*objfile
, int add_flags
)
851 (*objfile
->sf
->sym_read
) (objfile
, add_flags
);
852 if (!objfile_has_partial_symbols (objfile
))
854 bfd
*abfd
= find_separate_debug_file_in_section (objfile
);
855 struct cleanup
*cleanup
= make_cleanup_bfd_unref (abfd
);
858 symbol_file_add_separate (abfd
, add_flags
, objfile
);
860 do_cleanups (cleanup
);
862 if ((add_flags
& SYMFILE_NO_READ
) == 0)
863 require_partial_symbols (objfile
, 0);
866 /* Initialize entry point information for this objfile. */
869 init_entry_point_info (struct objfile
*objfile
)
871 /* Save startup file's range of PC addresses to help blockframe.c
872 decide where the bottom of the stack is. */
874 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
876 /* Executable file -- record its entry point so we'll recognize
877 the startup file because it contains the entry point. */
878 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
879 objfile
->ei
.entry_point_p
= 1;
881 else if (bfd_get_file_flags (objfile
->obfd
) & DYNAMIC
882 && bfd_get_start_address (objfile
->obfd
) != 0)
884 /* Some shared libraries may have entry points set and be
885 runnable. There's no clear way to indicate this, so just check
886 for values other than zero. */
887 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
888 objfile
->ei
.entry_point_p
= 1;
892 /* Examination of non-executable.o files. Short-circuit this stuff. */
893 objfile
->ei
.entry_point_p
= 0;
896 if (objfile
->ei
.entry_point_p
)
898 CORE_ADDR entry_point
= objfile
->ei
.entry_point
;
900 /* Make certain that the address points at real code, and not a
901 function descriptor. */
903 = gdbarch_convert_from_func_ptr_addr (objfile
->gdbarch
,
907 /* Remove any ISA markers, so that this matches entries in the
909 objfile
->ei
.entry_point
910 = gdbarch_addr_bits_remove (objfile
->gdbarch
, entry_point
);
914 /* Process a symbol file, as either the main file or as a dynamically
917 This function does not set the OBJFILE's entry-point info.
919 OBJFILE is where the symbols are to be read from.
921 ADDRS is the list of section load addresses. If the user has given
922 an 'add-symbol-file' command, then this is the list of offsets and
923 addresses he or she provided as arguments to the command; or, if
924 we're handling a shared library, these are the actual addresses the
925 sections are loaded at, according to the inferior's dynamic linker
926 (as gleaned by GDB's shared library code). We convert each address
927 into an offset from the section VMA's as it appears in the object
928 file, and then call the file's sym_offsets function to convert this
929 into a format-specific offset table --- a `struct section_offsets'.
930 If ADDRS is non-zero, OFFSETS must be zero.
932 OFFSETS is a table of section offsets already in the right
933 format-specific representation. NUM_OFFSETS is the number of
934 elements present in OFFSETS->offsets. If OFFSETS is non-zero, we
935 assume this is the proper table the call to sym_offsets described
936 above would produce. Instead of calling sym_offsets, we just dump
937 it right into objfile->section_offsets. (When we're re-reading
938 symbols from an objfile, we don't have the original load address
939 list any more; all we have is the section offset table.) If
940 OFFSETS is non-zero, ADDRS must be zero.
942 ADD_FLAGS encodes verbosity level, whether this is main symbol or
943 an extra symbol file such as dynamically loaded code, and wether
944 breakpoint reset should be deferred. */
947 syms_from_objfile_1 (struct objfile
*objfile
,
948 struct section_addr_info
*addrs
,
949 struct section_offsets
*offsets
,
953 struct section_addr_info
*local_addr
= NULL
;
954 struct cleanup
*old_chain
;
955 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
957 gdb_assert (! (addrs
&& offsets
));
959 objfile
->sf
= find_sym_fns (objfile
->obfd
);
961 if (objfile
->sf
== NULL
)
963 /* No symbols to load, but we still need to make sure
964 that the section_offsets table is allocated. */
965 int num_sections
= bfd_count_sections (objfile
->obfd
);
966 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
968 objfile
->num_sections
= num_sections
;
969 objfile
->section_offsets
970 = obstack_alloc (&objfile
->objfile_obstack
, size
);
971 memset (objfile
->section_offsets
, 0, size
);
975 /* Make sure that partially constructed symbol tables will be cleaned up
976 if an error occurs during symbol reading. */
977 old_chain
= make_cleanup_free_objfile (objfile
);
979 /* If ADDRS and OFFSETS are both NULL, put together a dummy address
980 list. We now establish the convention that an addr of zero means
981 no load address was specified. */
982 if (! addrs
&& ! offsets
)
985 = alloc_section_addr_info (bfd_count_sections (objfile
->obfd
));
986 make_cleanup (xfree
, local_addr
);
990 /* Now either addrs or offsets is non-zero. */
994 /* We will modify the main symbol table, make sure that all its users
995 will be cleaned up if an error occurs during symbol reading. */
996 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
998 /* Since no error yet, throw away the old symbol table. */
1000 if (symfile_objfile
!= NULL
)
1002 free_objfile (symfile_objfile
);
1003 gdb_assert (symfile_objfile
== NULL
);
1006 /* Currently we keep symbols from the add-symbol-file command.
1007 If the user wants to get rid of them, they should do "symbol-file"
1008 without arguments first. Not sure this is the best behavior
1011 (*objfile
->sf
->sym_new_init
) (objfile
);
1014 /* Convert addr into an offset rather than an absolute address.
1015 We find the lowest address of a loaded segment in the objfile,
1016 and assume that <addr> is where that got loaded.
1018 We no longer warn if the lowest section is not a text segment (as
1019 happens for the PA64 port. */
1020 if (addrs
&& addrs
->other
[0].name
)
1021 addr_info_make_relative (addrs
, objfile
->obfd
);
1023 /* Initialize symbol reading routines for this objfile, allow complaints to
1024 appear for this new file, and record how verbose to be, then do the
1025 initial symbol reading for this file. */
1027 (*objfile
->sf
->sym_init
) (objfile
);
1028 clear_complaints (&symfile_complaints
, 1, add_flags
& SYMFILE_VERBOSE
);
1031 (*objfile
->sf
->sym_offsets
) (objfile
, addrs
);
1034 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
1036 /* Just copy in the offset table directly as given to us. */
1037 objfile
->num_sections
= num_offsets
;
1038 objfile
->section_offsets
1039 = ((struct section_offsets
*)
1040 obstack_alloc (&objfile
->objfile_obstack
, size
));
1041 memcpy (objfile
->section_offsets
, offsets
, size
);
1043 init_objfile_sect_indices (objfile
);
1046 read_symbols (objfile
, add_flags
);
1048 /* Discard cleanups as symbol reading was successful. */
1050 discard_cleanups (old_chain
);
1054 /* Same as syms_from_objfile_1, but also initializes the objfile
1055 entry-point info. */
1058 syms_from_objfile (struct objfile
*objfile
,
1059 struct section_addr_info
*addrs
,
1060 struct section_offsets
*offsets
,
1064 syms_from_objfile_1 (objfile
, addrs
, offsets
, num_offsets
, add_flags
);
1065 init_entry_point_info (objfile
);
1068 /* Perform required actions after either reading in the initial
1069 symbols for a new objfile, or mapping in the symbols from a reusable
1070 objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */
1073 new_symfile_objfile (struct objfile
*objfile
, int add_flags
)
1075 /* If this is the main symbol file we have to clean up all users of the
1076 old main symbol file. Otherwise it is sufficient to fixup all the
1077 breakpoints that may have been redefined by this symbol file. */
1078 if (add_flags
& SYMFILE_MAINLINE
)
1080 /* OK, make it the "real" symbol file. */
1081 symfile_objfile
= objfile
;
1083 clear_symtab_users (add_flags
);
1085 else if ((add_flags
& SYMFILE_DEFER_BP_RESET
) == 0)
1087 breakpoint_re_set ();
1090 /* We're done reading the symbol file; finish off complaints. */
1091 clear_complaints (&symfile_complaints
, 0, add_flags
& SYMFILE_VERBOSE
);
1094 /* Process a symbol file, as either the main file or as a dynamically
1097 ABFD is a BFD already open on the file, as from symfile_bfd_open.
1098 A new reference is acquired by this function.
1100 ADD_FLAGS encodes verbosity, whether this is main symbol file or
1101 extra, such as dynamically loaded code, and what to do with breakpoins.
1103 ADDRS, OFFSETS, and NUM_OFFSETS are as described for
1104 syms_from_objfile, above.
1105 ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS.
1107 PARENT is the original objfile if ABFD is a separate debug info file.
1108 Otherwise PARENT is NULL.
1110 Upon success, returns a pointer to the objfile that was added.
1111 Upon failure, jumps back to command level (never returns). */
1113 static struct objfile
*
1114 symbol_file_add_with_addrs_or_offsets (bfd
*abfd
,
1116 struct section_addr_info
*addrs
,
1117 struct section_offsets
*offsets
,
1119 int flags
, struct objfile
*parent
)
1121 struct objfile
*objfile
;
1122 const char *name
= bfd_get_filename (abfd
);
1123 const int from_tty
= add_flags
& SYMFILE_VERBOSE
;
1124 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
1125 const int should_print
= ((from_tty
|| info_verbose
)
1126 && (readnow_symbol_files
1127 || (add_flags
& SYMFILE_NO_READ
) == 0));
1129 if (readnow_symbol_files
)
1131 flags
|= OBJF_READNOW
;
1132 add_flags
&= ~SYMFILE_NO_READ
;
1135 /* Give user a chance to burp if we'd be
1136 interactively wiping out any existing symbols. */
1138 if ((have_full_symbols () || have_partial_symbols ())
1141 && !query (_("Load new symbol table from \"%s\"? "), name
))
1142 error (_("Not confirmed."));
1144 objfile
= allocate_objfile (abfd
, flags
| (mainline
? OBJF_MAINLINE
: 0));
1147 add_separate_debug_objfile (objfile
, parent
);
1149 /* We either created a new mapped symbol table, mapped an existing
1150 symbol table file which has not had initial symbol reading
1151 performed, or need to read an unmapped symbol table. */
1154 if (deprecated_pre_add_symbol_hook
)
1155 deprecated_pre_add_symbol_hook (name
);
1158 printf_unfiltered (_("Reading symbols from %s..."), name
);
1160 gdb_flush (gdb_stdout
);
1163 syms_from_objfile (objfile
, addrs
, offsets
, num_offsets
,
1166 /* We now have at least a partial symbol table. Check to see if the
1167 user requested that all symbols be read on initial access via either
1168 the gdb startup command line or on a per symbol file basis. Expand
1169 all partial symbol tables for this objfile if so. */
1171 if ((flags
& OBJF_READNOW
))
1175 printf_unfiltered (_("expanding to full symbols..."));
1177 gdb_flush (gdb_stdout
);
1181 objfile
->sf
->qf
->expand_all_symtabs (objfile
);
1184 if (should_print
&& !objfile_has_symbols (objfile
))
1187 printf_unfiltered (_("(no debugging symbols found)..."));
1193 if (deprecated_post_add_symbol_hook
)
1194 deprecated_post_add_symbol_hook ();
1196 printf_unfiltered (_("done.\n"));
1199 /* We print some messages regardless of whether 'from_tty ||
1200 info_verbose' is true, so make sure they go out at the right
1202 gdb_flush (gdb_stdout
);
1204 if (objfile
->sf
== NULL
)
1206 observer_notify_new_objfile (objfile
);
1207 return objfile
; /* No symbols. */
1210 new_symfile_objfile (objfile
, add_flags
);
1212 observer_notify_new_objfile (objfile
);
1214 bfd_cache_close_all ();
1218 /* Add BFD as a separate debug file for OBJFILE. */
1221 symbol_file_add_separate (bfd
*bfd
, int symfile_flags
, struct objfile
*objfile
)
1223 struct objfile
*new_objfile
;
1224 struct section_addr_info
*sap
;
1225 struct cleanup
*my_cleanup
;
1227 /* Create section_addr_info. We can't directly use offsets from OBJFILE
1228 because sections of BFD may not match sections of OBJFILE and because
1229 vma may have been modified by tools such as prelink. */
1230 sap
= build_section_addr_info_from_objfile (objfile
);
1231 my_cleanup
= make_cleanup_free_section_addr_info (sap
);
1233 new_objfile
= symbol_file_add_with_addrs_or_offsets
1234 (bfd
, symfile_flags
,
1236 objfile
->flags
& (OBJF_REORDERED
| OBJF_SHARED
| OBJF_READNOW
1240 do_cleanups (my_cleanup
);
1243 /* Process the symbol file ABFD, as either the main file or as a
1244 dynamically loaded file.
1246 See symbol_file_add_with_addrs_or_offsets's comments for
1249 symbol_file_add_from_bfd (bfd
*abfd
, int add_flags
,
1250 struct section_addr_info
*addrs
,
1251 int flags
, struct objfile
*parent
)
1253 return symbol_file_add_with_addrs_or_offsets (abfd
, add_flags
, addrs
, 0, 0,
1258 /* Process a symbol file, as either the main file or as a dynamically
1259 loaded file. See symbol_file_add_with_addrs_or_offsets's comments
1262 symbol_file_add (char *name
, int add_flags
, struct section_addr_info
*addrs
,
1265 bfd
*bfd
= symfile_bfd_open (name
);
1266 struct cleanup
*cleanup
= make_cleanup_bfd_unref (bfd
);
1267 struct objfile
*objf
;
1269 objf
= symbol_file_add_from_bfd (bfd
, add_flags
, addrs
, flags
, NULL
);
1270 do_cleanups (cleanup
);
1275 /* Call symbol_file_add() with default values and update whatever is
1276 affected by the loading of a new main().
1277 Used when the file is supplied in the gdb command line
1278 and by some targets with special loading requirements.
1279 The auxiliary function, symbol_file_add_main_1(), has the flags
1280 argument for the switches that can only be specified in the symbol_file
1284 symbol_file_add_main (char *args
, int from_tty
)
1286 symbol_file_add_main_1 (args
, from_tty
, 0);
1290 symbol_file_add_main_1 (char *args
, int from_tty
, int flags
)
1292 const int add_flags
= (current_inferior ()->symfile_flags
1293 | SYMFILE_MAINLINE
| (from_tty
? SYMFILE_VERBOSE
: 0));
1295 symbol_file_add (args
, add_flags
, NULL
, flags
);
1297 /* Getting new symbols may change our opinion about
1298 what is frameless. */
1299 reinit_frame_cache ();
1301 if ((flags
& SYMFILE_NO_READ
) == 0)
1302 set_initial_language ();
1306 symbol_file_clear (int from_tty
)
1308 if ((have_full_symbols () || have_partial_symbols ())
1311 ? !query (_("Discard symbol table from `%s'? "),
1312 symfile_objfile
->name
)
1313 : !query (_("Discard symbol table? "))))
1314 error (_("Not confirmed."));
1316 /* solib descriptors may have handles to objfiles. Wipe them before their
1317 objfiles get stale by free_all_objfiles. */
1318 no_shared_libraries (NULL
, from_tty
);
1320 free_all_objfiles ();
1322 gdb_assert (symfile_objfile
== NULL
);
1324 printf_unfiltered (_("No symbol file now.\n"));
1328 get_debug_link_info (struct objfile
*objfile
, unsigned long *crc32_out
)
1331 bfd_size_type debuglink_size
;
1332 unsigned long crc32
;
1336 sect
= bfd_get_section_by_name (objfile
->obfd
, ".gnu_debuglink");
1341 debuglink_size
= bfd_section_size (objfile
->obfd
, sect
);
1343 contents
= xmalloc (debuglink_size
);
1344 bfd_get_section_contents (objfile
->obfd
, sect
, contents
,
1345 (file_ptr
)0, (bfd_size_type
)debuglink_size
);
1347 /* Crc value is stored after the filename, aligned up to 4 bytes. */
1348 crc_offset
= strlen (contents
) + 1;
1349 crc_offset
= (crc_offset
+ 3) & ~3;
1351 crc32
= bfd_get_32 (objfile
->obfd
, (bfd_byte
*) (contents
+ crc_offset
));
1357 /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and
1358 return 1. Otherwise print a warning and return 0. ABFD seek position is
1362 get_file_crc (bfd
*abfd
, unsigned long *file_crc_return
)
1364 unsigned long file_crc
= 0;
1366 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0)
1368 warning (_("Problem reading \"%s\" for CRC: %s"),
1369 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1375 gdb_byte buffer
[8 * 1024];
1376 bfd_size_type count
;
1378 count
= bfd_bread (buffer
, sizeof (buffer
), abfd
);
1379 if (count
== (bfd_size_type
) -1)
1381 warning (_("Problem reading \"%s\" for CRC: %s"),
1382 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1387 file_crc
= gnu_debuglink_crc32 (file_crc
, buffer
, count
);
1390 *file_crc_return
= file_crc
;
1395 separate_debug_file_exists (const char *name
, unsigned long crc
,
1396 struct objfile
*parent_objfile
)
1398 unsigned long file_crc
;
1401 struct stat parent_stat
, abfd_stat
;
1402 int verified_as_different
;
1404 /* Find a separate debug info file as if symbols would be present in
1405 PARENT_OBJFILE itself this function would not be called. .gnu_debuglink
1406 section can contain just the basename of PARENT_OBJFILE without any
1407 ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where
1408 the separate debug infos with the same basename can exist. */
1410 if (filename_cmp (name
, parent_objfile
->name
) == 0)
1413 abfd
= gdb_bfd_open_maybe_remote (name
);
1418 /* Verify symlinks were not the cause of filename_cmp name difference above.
1420 Some operating systems, e.g. Windows, do not provide a meaningful
1421 st_ino; they always set it to zero. (Windows does provide a
1422 meaningful st_dev.) Do not indicate a duplicate library in that
1423 case. While there is no guarantee that a system that provides
1424 meaningful inode numbers will never set st_ino to zero, this is
1425 merely an optimization, so we do not need to worry about false
1428 if (bfd_stat (abfd
, &abfd_stat
) == 0
1429 && abfd_stat
.st_ino
!= 0
1430 && bfd_stat (parent_objfile
->obfd
, &parent_stat
) == 0)
1432 if (abfd_stat
.st_dev
== parent_stat
.st_dev
1433 && abfd_stat
.st_ino
== parent_stat
.st_ino
)
1435 gdb_bfd_unref (abfd
);
1438 verified_as_different
= 1;
1441 verified_as_different
= 0;
1443 file_crc_p
= get_file_crc (abfd
, &file_crc
);
1445 gdb_bfd_unref (abfd
);
1450 if (crc
!= file_crc
)
1452 /* If one (or both) the files are accessed for example the via "remote:"
1453 gdbserver way it does not support the bfd_stat operation. Verify
1454 whether those two files are not the same manually. */
1456 if (!verified_as_different
&& !parent_objfile
->crc32_p
)
1458 parent_objfile
->crc32_p
= get_file_crc (parent_objfile
->obfd
,
1459 &parent_objfile
->crc32
);
1460 if (!parent_objfile
->crc32_p
)
1464 if (verified_as_different
|| parent_objfile
->crc32
!= file_crc
)
1465 warning (_("the debug information found in \"%s\""
1466 " does not match \"%s\" (CRC mismatch).\n"),
1467 name
, parent_objfile
->name
);
1475 char *debug_file_directory
= NULL
;
1477 show_debug_file_directory (struct ui_file
*file
, int from_tty
,
1478 struct cmd_list_element
*c
, const char *value
)
1480 fprintf_filtered (file
,
1481 _("The directory where separate debug "
1482 "symbols are searched for is \"%s\".\n"),
1486 #if ! defined (DEBUG_SUBDIRECTORY)
1487 #define DEBUG_SUBDIRECTORY ".debug"
1490 /* Find a separate debuginfo file for OBJFILE, using DIR as the directory
1491 where the original file resides (may not be the same as
1492 dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are
1493 looking for. Returns the name of the debuginfo, of NULL. */
1496 find_separate_debug_file (const char *dir
,
1497 const char *canon_dir
,
1498 const char *debuglink
,
1499 unsigned long crc32
, struct objfile
*objfile
)
1504 VEC (char_ptr
) *debugdir_vec
;
1505 struct cleanup
*back_to
;
1508 /* Set I to max (strlen (canon_dir), strlen (dir)). */
1510 if (canon_dir
!= NULL
&& strlen (canon_dir
) > i
)
1511 i
= strlen (canon_dir
);
1513 debugfile
= xmalloc (strlen (debug_file_directory
) + 1
1515 + strlen (DEBUG_SUBDIRECTORY
)
1517 + strlen (debuglink
)
1520 /* First try in the same directory as the original file. */
1521 strcpy (debugfile
, dir
);
1522 strcat (debugfile
, debuglink
);
1524 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1527 /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
1528 strcpy (debugfile
, dir
);
1529 strcat (debugfile
, DEBUG_SUBDIRECTORY
);
1530 strcat (debugfile
, "/");
1531 strcat (debugfile
, debuglink
);
1533 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1536 /* Then try in the global debugfile directories.
1538 Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
1539 cause "/..." lookups. */
1541 debugdir_vec
= dirnames_to_char_ptr_vec (debug_file_directory
);
1542 back_to
= make_cleanup_free_char_ptr_vec (debugdir_vec
);
1544 for (ix
= 0; VEC_iterate (char_ptr
, debugdir_vec
, ix
, debugdir
); ++ix
)
1546 strcpy (debugfile
, debugdir
);
1547 strcat (debugfile
, "/");
1548 strcat (debugfile
, dir
);
1549 strcat (debugfile
, debuglink
);
1551 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1554 /* If the file is in the sysroot, try using its base path in the
1555 global debugfile directory. */
1556 if (canon_dir
!= NULL
1557 && filename_ncmp (canon_dir
, gdb_sysroot
,
1558 strlen (gdb_sysroot
)) == 0
1559 && IS_DIR_SEPARATOR (canon_dir
[strlen (gdb_sysroot
)]))
1561 strcpy (debugfile
, debugdir
);
1562 strcat (debugfile
, canon_dir
+ strlen (gdb_sysroot
));
1563 strcat (debugfile
, "/");
1564 strcat (debugfile
, debuglink
);
1566 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1571 do_cleanups (back_to
);
1576 /* Modify PATH to contain only "directory/" part of PATH.
1577 If there were no directory separators in PATH, PATH will be empty
1578 string on return. */
1581 terminate_after_last_dir_separator (char *path
)
1585 /* Strip off the final filename part, leaving the directory name,
1586 followed by a slash. The directory can be relative or absolute. */
1587 for (i
= strlen(path
) - 1; i
>= 0; i
--)
1588 if (IS_DIR_SEPARATOR (path
[i
]))
1591 /* If I is -1 then no directory is present there and DIR will be "". */
1595 /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section).
1596 Returns pathname, or NULL. */
1599 find_separate_debug_file_by_debuglink (struct objfile
*objfile
)
1602 char *dir
, *canon_dir
;
1604 unsigned long crc32
;
1605 struct cleanup
*cleanups
;
1607 debuglink
= get_debug_link_info (objfile
, &crc32
);
1609 if (debuglink
== NULL
)
1611 /* There's no separate debug info, hence there's no way we could
1612 load it => no warning. */
1616 cleanups
= make_cleanup (xfree
, debuglink
);
1617 dir
= xstrdup (objfile
->name
);
1618 make_cleanup (xfree
, dir
);
1619 terminate_after_last_dir_separator (dir
);
1620 canon_dir
= lrealpath (dir
);
1622 debugfile
= find_separate_debug_file (dir
, canon_dir
, debuglink
,
1626 if (debugfile
== NULL
)
1629 /* For PR gdb/9538, try again with realpath (if different from the
1634 if (lstat (objfile
->name
, &st_buf
) == 0 && S_ISLNK(st_buf
.st_mode
))
1638 symlink_dir
= lrealpath (objfile
->name
);
1639 if (symlink_dir
!= NULL
)
1641 make_cleanup (xfree
, symlink_dir
);
1642 terminate_after_last_dir_separator (symlink_dir
);
1643 if (strcmp (dir
, symlink_dir
) != 0)
1645 /* Different directory, so try using it. */
1646 debugfile
= find_separate_debug_file (symlink_dir
,
1654 #endif /* HAVE_LSTAT */
1657 do_cleanups (cleanups
);
1662 /* This is the symbol-file command. Read the file, analyze its
1663 symbols, and add a struct symtab to a symtab list. The syntax of
1664 the command is rather bizarre:
1666 1. The function buildargv implements various quoting conventions
1667 which are undocumented and have little or nothing in common with
1668 the way things are quoted (or not quoted) elsewhere in GDB.
1670 2. Options are used, which are not generally used in GDB (perhaps
1671 "set mapped on", "set readnow on" would be better)
1673 3. The order of options matters, which is contrary to GNU
1674 conventions (because it is confusing and inconvenient). */
1677 symbol_file_command (char *args
, int from_tty
)
1683 symbol_file_clear (from_tty
);
1687 char **argv
= gdb_buildargv (args
);
1688 int flags
= OBJF_USERLOADED
;
1689 struct cleanup
*cleanups
;
1692 cleanups
= make_cleanup_freeargv (argv
);
1693 while (*argv
!= NULL
)
1695 if (strcmp (*argv
, "-readnow") == 0)
1696 flags
|= OBJF_READNOW
;
1697 else if (**argv
== '-')
1698 error (_("unknown option `%s'"), *argv
);
1701 symbol_file_add_main_1 (*argv
, from_tty
, flags
);
1709 error (_("no symbol file name was specified"));
1711 do_cleanups (cleanups
);
1715 /* Set the initial language.
1717 FIXME: A better solution would be to record the language in the
1718 psymtab when reading partial symbols, and then use it (if known) to
1719 set the language. This would be a win for formats that encode the
1720 language in an easily discoverable place, such as DWARF. For
1721 stabs, we can jump through hoops looking for specially named
1722 symbols or try to intuit the language from the specific type of
1723 stabs we find, but we can't do that until later when we read in
1727 set_initial_language (void)
1729 enum language lang
= language_unknown
;
1731 if (language_of_main
!= language_unknown
)
1732 lang
= language_of_main
;
1735 const char *filename
;
1737 filename
= find_main_filename ();
1738 if (filename
!= NULL
)
1739 lang
= deduce_language_from_filename (filename
);
1742 if (lang
== language_unknown
)
1744 /* Make C the default language */
1748 set_language (lang
);
1749 expected_language
= current_language
; /* Don't warn the user. */
1752 /* If NAME is a remote name open the file using remote protocol, otherwise
1753 open it normally. Returns a new reference to the BFD. On error,
1754 returns NULL with the BFD error set. */
1757 gdb_bfd_open_maybe_remote (const char *name
)
1761 if (remote_filename_p (name
))
1762 result
= remote_bfd_open (name
, gnutarget
);
1764 result
= gdb_bfd_open (name
, gnutarget
, -1);
1770 /* Open the file specified by NAME and hand it off to BFD for
1771 preliminary analysis. Return a newly initialized bfd *, which
1772 includes a newly malloc'd` copy of NAME (tilde-expanded and made
1773 absolute). In case of trouble, error() is called. */
1776 symfile_bfd_open (char *name
)
1780 char *absolute_name
;
1782 if (remote_filename_p (name
))
1784 sym_bfd
= remote_bfd_open (name
, gnutarget
);
1786 error (_("`%s': can't open to read symbols: %s."), name
,
1787 bfd_errmsg (bfd_get_error ()));
1789 if (!bfd_check_format (sym_bfd
, bfd_object
))
1791 make_cleanup_bfd_unref (sym_bfd
);
1792 error (_("`%s': can't read symbols: %s."), name
,
1793 bfd_errmsg (bfd_get_error ()));
1799 name
= tilde_expand (name
); /* Returns 1st new malloc'd copy. */
1801 /* Look down path for it, allocate 2nd new malloc'd copy. */
1802 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, name
,
1803 O_RDONLY
| O_BINARY
, &absolute_name
);
1804 #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
1807 char *exename
= alloca (strlen (name
) + 5);
1809 strcat (strcpy (exename
, name
), ".exe");
1810 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, exename
,
1811 O_RDONLY
| O_BINARY
, &absolute_name
);
1816 make_cleanup (xfree
, name
);
1817 perror_with_name (name
);
1821 name
= absolute_name
;
1822 make_cleanup (xfree
, name
);
1824 sym_bfd
= gdb_bfd_open (name
, gnutarget
, desc
);
1827 make_cleanup (xfree
, name
);
1828 error (_("`%s': can't open to read symbols: %s."), name
,
1829 bfd_errmsg (bfd_get_error ()));
1831 bfd_set_cacheable (sym_bfd
, 1);
1833 if (!bfd_check_format (sym_bfd
, bfd_object
))
1835 make_cleanup_bfd_unref (sym_bfd
);
1836 error (_("`%s': can't read symbols: %s."), name
,
1837 bfd_errmsg (bfd_get_error ()));
1843 /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if
1844 the section was not found. */
1847 get_section_index (struct objfile
*objfile
, char *section_name
)
1849 asection
*sect
= bfd_get_section_by_name (objfile
->obfd
, section_name
);
1857 /* Link SF into the global symtab_fns list. Called on startup by the
1858 _initialize routine in each object file format reader, to register
1859 information about each format the reader is prepared to handle. */
1862 add_symtab_fns (const struct sym_fns
*sf
)
1864 VEC_safe_push (sym_fns_ptr
, symtab_fns
, sf
);
1867 /* Initialize OBJFILE to read symbols from its associated BFD. It
1868 either returns or calls error(). The result is an initialized
1869 struct sym_fns in the objfile structure, that contains cached
1870 information about the symbol file. */
1872 static const struct sym_fns
*
1873 find_sym_fns (bfd
*abfd
)
1875 const struct sym_fns
*sf
;
1876 enum bfd_flavour our_flavour
= bfd_get_flavour (abfd
);
1879 if (our_flavour
== bfd_target_srec_flavour
1880 || our_flavour
== bfd_target_ihex_flavour
1881 || our_flavour
== bfd_target_tekhex_flavour
)
1882 return NULL
; /* No symbols. */
1884 for (i
= 0; VEC_iterate (sym_fns_ptr
, symtab_fns
, i
, sf
); ++i
)
1885 if (our_flavour
== sf
->sym_flavour
)
1888 error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."),
1889 bfd_get_target (abfd
));
1893 /* This function runs the load command of our current target. */
1896 load_command (char *arg
, int from_tty
)
1900 /* The user might be reloading because the binary has changed. Take
1901 this opportunity to check. */
1902 reopen_exec_file ();
1910 parg
= arg
= get_exec_file (1);
1912 /* Count how many \ " ' tab space there are in the name. */
1913 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1921 /* We need to quote this string so buildargv can pull it apart. */
1922 char *temp
= xmalloc (strlen (arg
) + count
+ 1 );
1926 make_cleanup (xfree
, temp
);
1929 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1931 strncpy (ptemp
, prev
, parg
- prev
);
1932 ptemp
+= parg
- prev
;
1936 strcpy (ptemp
, prev
);
1942 target_load (arg
, from_tty
);
1944 /* After re-loading the executable, we don't really know which
1945 overlays are mapped any more. */
1946 overlay_cache_invalid
= 1;
1949 /* This version of "load" should be usable for any target. Currently
1950 it is just used for remote targets, not inftarg.c or core files,
1951 on the theory that only in that case is it useful.
1953 Avoiding xmodem and the like seems like a win (a) because we don't have
1954 to worry about finding it, and (b) On VMS, fork() is very slow and so
1955 we don't want to run a subprocess. On the other hand, I'm not sure how
1956 performance compares. */
1958 static int validate_download
= 0;
1960 /* Callback service function for generic_load (bfd_map_over_sections). */
1963 add_section_size_callback (bfd
*abfd
, asection
*asec
, void *data
)
1965 bfd_size_type
*sum
= data
;
1967 *sum
+= bfd_get_section_size (asec
);
1970 /* Opaque data for load_section_callback. */
1971 struct load_section_data
{
1972 unsigned long load_offset
;
1973 struct load_progress_data
*progress_data
;
1974 VEC(memory_write_request_s
) *requests
;
1977 /* Opaque data for load_progress. */
1978 struct load_progress_data
{
1979 /* Cumulative data. */
1980 unsigned long write_count
;
1981 unsigned long data_count
;
1982 bfd_size_type total_size
;
1985 /* Opaque data for load_progress for a single section. */
1986 struct load_progress_section_data
{
1987 struct load_progress_data
*cumulative
;
1989 /* Per-section data. */
1990 const char *section_name
;
1991 ULONGEST section_sent
;
1992 ULONGEST section_size
;
1997 /* Target write callback routine for progress reporting. */
2000 load_progress (ULONGEST bytes
, void *untyped_arg
)
2002 struct load_progress_section_data
*args
= untyped_arg
;
2003 struct load_progress_data
*totals
;
2006 /* Writing padding data. No easy way to get at the cumulative
2007 stats, so just ignore this. */
2010 totals
= args
->cumulative
;
2012 if (bytes
== 0 && args
->section_sent
== 0)
2014 /* The write is just starting. Let the user know we've started
2016 ui_out_message (current_uiout
, 0, "Loading section %s, size %s lma %s\n",
2017 args
->section_name
, hex_string (args
->section_size
),
2018 paddress (target_gdbarch (), args
->lma
));
2022 if (validate_download
)
2024 /* Broken memories and broken monitors manifest themselves here
2025 when bring new computers to life. This doubles already slow
2027 /* NOTE: cagney/1999-10-18: A more efficient implementation
2028 might add a verify_memory() method to the target vector and
2029 then use that. remote.c could implement that method using
2030 the ``qCRC'' packet. */
2031 gdb_byte
*check
= xmalloc (bytes
);
2032 struct cleanup
*verify_cleanups
= make_cleanup (xfree
, check
);
2034 if (target_read_memory (args
->lma
, check
, bytes
) != 0)
2035 error (_("Download verify read failed at %s"),
2036 paddress (target_gdbarch (), args
->lma
));
2037 if (memcmp (args
->buffer
, check
, bytes
) != 0)
2038 error (_("Download verify compare failed at %s"),
2039 paddress (target_gdbarch (), args
->lma
));
2040 do_cleanups (verify_cleanups
);
2042 totals
->data_count
+= bytes
;
2044 args
->buffer
+= bytes
;
2045 totals
->write_count
+= 1;
2046 args
->section_sent
+= bytes
;
2047 if (check_quit_flag ()
2048 || (deprecated_ui_load_progress_hook
!= NULL
2049 && deprecated_ui_load_progress_hook (args
->section_name
,
2050 args
->section_sent
)))
2051 error (_("Canceled the download"));
2053 if (deprecated_show_load_progress
!= NULL
)
2054 deprecated_show_load_progress (args
->section_name
,
2058 totals
->total_size
);
2061 /* Callback service function for generic_load (bfd_map_over_sections). */
2064 load_section_callback (bfd
*abfd
, asection
*asec
, void *data
)
2066 struct memory_write_request
*new_request
;
2067 struct load_section_data
*args
= data
;
2068 struct load_progress_section_data
*section_data
;
2069 bfd_size_type size
= bfd_get_section_size (asec
);
2071 const char *sect_name
= bfd_get_section_name (abfd
, asec
);
2073 if ((bfd_get_section_flags (abfd
, asec
) & SEC_LOAD
) == 0)
2079 new_request
= VEC_safe_push (memory_write_request_s
,
2080 args
->requests
, NULL
);
2081 memset (new_request
, 0, sizeof (struct memory_write_request
));
2082 section_data
= xcalloc (1, sizeof (struct load_progress_section_data
));
2083 new_request
->begin
= bfd_section_lma (abfd
, asec
) + args
->load_offset
;
2084 new_request
->end
= new_request
->begin
+ size
; /* FIXME Should size
2086 new_request
->data
= xmalloc (size
);
2087 new_request
->baton
= section_data
;
2089 buffer
= new_request
->data
;
2091 section_data
->cumulative
= args
->progress_data
;
2092 section_data
->section_name
= sect_name
;
2093 section_data
->section_size
= size
;
2094 section_data
->lma
= new_request
->begin
;
2095 section_data
->buffer
= buffer
;
2097 bfd_get_section_contents (abfd
, asec
, buffer
, 0, size
);
2100 /* Clean up an entire memory request vector, including load
2101 data and progress records. */
2104 clear_memory_write_data (void *arg
)
2106 VEC(memory_write_request_s
) **vec_p
= arg
;
2107 VEC(memory_write_request_s
) *vec
= *vec_p
;
2109 struct memory_write_request
*mr
;
2111 for (i
= 0; VEC_iterate (memory_write_request_s
, vec
, i
, mr
); ++i
)
2116 VEC_free (memory_write_request_s
, vec
);
2120 generic_load (char *args
, int from_tty
)
2123 struct timeval start_time
, end_time
;
2125 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
2126 struct load_section_data cbdata
;
2127 struct load_progress_data total_progress
;
2128 struct ui_out
*uiout
= current_uiout
;
2133 memset (&cbdata
, 0, sizeof (cbdata
));
2134 memset (&total_progress
, 0, sizeof (total_progress
));
2135 cbdata
.progress_data
= &total_progress
;
2137 make_cleanup (clear_memory_write_data
, &cbdata
.requests
);
2140 error_no_arg (_("file to load"));
2142 argv
= gdb_buildargv (args
);
2143 make_cleanup_freeargv (argv
);
2145 filename
= tilde_expand (argv
[0]);
2146 make_cleanup (xfree
, filename
);
2148 if (argv
[1] != NULL
)
2152 cbdata
.load_offset
= strtoul (argv
[1], &endptr
, 0);
2154 /* If the last word was not a valid number then
2155 treat it as a file name with spaces in. */
2156 if (argv
[1] == endptr
)
2157 error (_("Invalid download offset:%s."), argv
[1]);
2159 if (argv
[2] != NULL
)
2160 error (_("Too many parameters."));
2163 /* Open the file for loading. */
2164 loadfile_bfd
= gdb_bfd_open (filename
, gnutarget
, -1);
2165 if (loadfile_bfd
== NULL
)
2167 perror_with_name (filename
);
2171 make_cleanup_bfd_unref (loadfile_bfd
);
2173 if (!bfd_check_format (loadfile_bfd
, bfd_object
))
2175 error (_("\"%s\" is not an object file: %s"), filename
,
2176 bfd_errmsg (bfd_get_error ()));
2179 bfd_map_over_sections (loadfile_bfd
, add_section_size_callback
,
2180 (void *) &total_progress
.total_size
);
2182 bfd_map_over_sections (loadfile_bfd
, load_section_callback
, &cbdata
);
2184 gettimeofday (&start_time
, NULL
);
2186 if (target_write_memory_blocks (cbdata
.requests
, flash_discard
,
2187 load_progress
) != 0)
2188 error (_("Load failed"));
2190 gettimeofday (&end_time
, NULL
);
2192 entry
= bfd_get_start_address (loadfile_bfd
);
2193 entry
= gdbarch_addr_bits_remove (target_gdbarch (), entry
);
2194 ui_out_text (uiout
, "Start address ");
2195 ui_out_field_fmt (uiout
, "address", "%s", paddress (target_gdbarch (), entry
));
2196 ui_out_text (uiout
, ", load size ");
2197 ui_out_field_fmt (uiout
, "load-size", "%lu", total_progress
.data_count
);
2198 ui_out_text (uiout
, "\n");
2199 /* We were doing this in remote-mips.c, I suspect it is right
2200 for other targets too. */
2201 regcache_write_pc (get_current_regcache (), entry
);
2203 /* Reset breakpoints, now that we have changed the load image. For
2204 instance, breakpoints may have been set (or reset, by
2205 post_create_inferior) while connected to the target but before we
2206 loaded the program. In that case, the prologue analyzer could
2207 have read instructions from the target to find the right
2208 breakpoint locations. Loading has changed the contents of that
2211 breakpoint_re_set ();
2213 /* FIXME: are we supposed to call symbol_file_add or not? According
2214 to a comment from remote-mips.c (where a call to symbol_file_add
2215 was commented out), making the call confuses GDB if more than one
2216 file is loaded in. Some targets do (e.g., remote-vx.c) but
2217 others don't (or didn't - perhaps they have all been deleted). */
2219 print_transfer_performance (gdb_stdout
, total_progress
.data_count
,
2220 total_progress
.write_count
,
2221 &start_time
, &end_time
);
2223 do_cleanups (old_cleanups
);
2226 /* Report how fast the transfer went. */
2229 print_transfer_performance (struct ui_file
*stream
,
2230 unsigned long data_count
,
2231 unsigned long write_count
,
2232 const struct timeval
*start_time
,
2233 const struct timeval
*end_time
)
2235 ULONGEST time_count
;
2236 struct ui_out
*uiout
= current_uiout
;
2238 /* Compute the elapsed time in milliseconds, as a tradeoff between
2239 accuracy and overflow. */
2240 time_count
= (end_time
->tv_sec
- start_time
->tv_sec
) * 1000;
2241 time_count
+= (end_time
->tv_usec
- start_time
->tv_usec
) / 1000;
2243 ui_out_text (uiout
, "Transfer rate: ");
2246 unsigned long rate
= ((ULONGEST
) data_count
* 1000) / time_count
;
2248 if (ui_out_is_mi_like_p (uiout
))
2250 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
* 8);
2251 ui_out_text (uiout
, " bits/sec");
2253 else if (rate
< 1024)
2255 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
);
2256 ui_out_text (uiout
, " bytes/sec");
2260 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
/ 1024);
2261 ui_out_text (uiout
, " KB/sec");
2266 ui_out_field_fmt (uiout
, "transferred-bits", "%lu", (data_count
* 8));
2267 ui_out_text (uiout
, " bits in <1 sec");
2269 if (write_count
> 0)
2271 ui_out_text (uiout
, ", ");
2272 ui_out_field_fmt (uiout
, "write-rate", "%lu", data_count
/ write_count
);
2273 ui_out_text (uiout
, " bytes/write");
2275 ui_out_text (uiout
, ".\n");
2278 /* This function allows the addition of incrementally linked object files.
2279 It does not modify any state in the target, only in the debugger. */
2280 /* Note: ezannoni 2000-04-13 This function/command used to have a
2281 special case syntax for the rombug target (Rombug is the boot
2282 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
2283 rombug case, the user doesn't need to supply a text address,
2284 instead a call to target_link() (in target.c) would supply the
2285 value to use. We are now discontinuing this type of ad hoc syntax. */
2288 add_symbol_file_command (char *args
, int from_tty
)
2290 struct gdbarch
*gdbarch
= get_current_arch ();
2291 char *filename
= NULL
;
2292 int flags
= OBJF_USERLOADED
;
2294 int section_index
= 0;
2298 int expecting_sec_name
= 0;
2299 int expecting_sec_addr
= 0;
2308 struct section_addr_info
*section_addrs
;
2309 struct sect_opt
*sect_opts
= NULL
;
2310 size_t num_sect_opts
= 0;
2311 struct cleanup
*my_cleanups
= make_cleanup (null_cleanup
, NULL
);
2314 sect_opts
= (struct sect_opt
*) xmalloc (num_sect_opts
2315 * sizeof (struct sect_opt
));
2320 error (_("add-symbol-file takes a file name and an address"));
2322 argv
= gdb_buildargv (args
);
2323 make_cleanup_freeargv (argv
);
2325 for (arg
= argv
[0], argcnt
= 0; arg
!= NULL
; arg
= argv
[++argcnt
])
2327 /* Process the argument. */
2330 /* The first argument is the file name. */
2331 filename
= tilde_expand (arg
);
2332 make_cleanup (xfree
, filename
);
2337 /* The second argument is always the text address at which
2338 to load the program. */
2339 sect_opts
[section_index
].name
= ".text";
2340 sect_opts
[section_index
].value
= arg
;
2341 if (++section_index
>= num_sect_opts
)
2344 sect_opts
= ((struct sect_opt
*)
2345 xrealloc (sect_opts
,
2347 * sizeof (struct sect_opt
)));
2352 /* It's an option (starting with '-') or it's an argument
2357 if (strcmp (arg
, "-readnow") == 0)
2358 flags
|= OBJF_READNOW
;
2359 else if (strcmp (arg
, "-s") == 0)
2361 expecting_sec_name
= 1;
2362 expecting_sec_addr
= 1;
2367 if (expecting_sec_name
)
2369 sect_opts
[section_index
].name
= arg
;
2370 expecting_sec_name
= 0;
2373 if (expecting_sec_addr
)
2375 sect_opts
[section_index
].value
= arg
;
2376 expecting_sec_addr
= 0;
2377 if (++section_index
>= num_sect_opts
)
2380 sect_opts
= ((struct sect_opt
*)
2381 xrealloc (sect_opts
,
2383 * sizeof (struct sect_opt
)));
2387 error (_("USAGE: add-symbol-file <filename> <textaddress>"
2388 " [-readnow] [-s <secname> <addr>]*"));
2393 /* This command takes at least two arguments. The first one is a
2394 filename, and the second is the address where this file has been
2395 loaded. Abort now if this address hasn't been provided by the
2397 if (section_index
< 1)
2398 error (_("The address where %s has been loaded is missing"), filename
);
2400 /* Print the prompt for the query below. And save the arguments into
2401 a sect_addr_info structure to be passed around to other
2402 functions. We have to split this up into separate print
2403 statements because hex_string returns a local static
2406 printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename
);
2407 section_addrs
= alloc_section_addr_info (section_index
);
2408 make_cleanup (xfree
, section_addrs
);
2409 for (i
= 0; i
< section_index
; i
++)
2412 char *val
= sect_opts
[i
].value
;
2413 char *sec
= sect_opts
[i
].name
;
2415 addr
= parse_and_eval_address (val
);
2417 /* Here we store the section offsets in the order they were
2418 entered on the command line. */
2419 section_addrs
->other
[sec_num
].name
= sec
;
2420 section_addrs
->other
[sec_num
].addr
= addr
;
2421 printf_unfiltered ("\t%s_addr = %s\n", sec
,
2422 paddress (gdbarch
, addr
));
2425 /* The object's sections are initialized when a
2426 call is made to build_objfile_section_table (objfile).
2427 This happens in reread_symbols.
2428 At this point, we don't know what file type this is,
2429 so we can't determine what section names are valid. */
2432 if (from_tty
&& (!query ("%s", "")))
2433 error (_("Not confirmed."));
2435 symbol_file_add (filename
, from_tty
? SYMFILE_VERBOSE
: 0,
2436 section_addrs
, flags
);
2438 /* Getting new symbols may change our opinion about what is
2440 reinit_frame_cache ();
2441 do_cleanups (my_cleanups
);
2445 typedef struct objfile
*objfilep
;
2447 DEF_VEC_P (objfilep
);
2449 /* Re-read symbols if a symbol-file has changed. */
2451 reread_symbols (void)
2453 struct objfile
*objfile
;
2455 struct stat new_statbuf
;
2457 VEC (objfilep
) *new_objfiles
= NULL
;
2458 struct cleanup
*all_cleanups
;
2460 all_cleanups
= make_cleanup (VEC_cleanup (objfilep
), &new_objfiles
);
2462 /* With the addition of shared libraries, this should be modified,
2463 the load time should be saved in the partial symbol tables, since
2464 different tables may come from different source files. FIXME.
2465 This routine should then walk down each partial symbol table
2466 and see if the symbol table that it originates from has been changed. */
2468 for (objfile
= object_files
; objfile
; objfile
= objfile
->next
)
2470 /* solib-sunos.c creates one objfile with obfd. */
2471 if (objfile
->obfd
== NULL
)
2474 /* Separate debug objfiles are handled in the main objfile. */
2475 if (objfile
->separate_debug_objfile_backlink
)
2478 /* If this object is from an archive (what you usually create with
2479 `ar', often called a `static library' on most systems, though
2480 a `shared library' on AIX is also an archive), then you should
2481 stat on the archive name, not member name. */
2482 if (objfile
->obfd
->my_archive
)
2483 res
= stat (objfile
->obfd
->my_archive
->filename
, &new_statbuf
);
2485 res
= stat (objfile
->name
, &new_statbuf
);
2488 /* FIXME, should use print_sys_errmsg but it's not filtered. */
2489 printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
2493 new_modtime
= new_statbuf
.st_mtime
;
2494 if (new_modtime
!= objfile
->mtime
)
2496 struct cleanup
*old_cleanups
;
2497 struct section_offsets
*offsets
;
2499 char *obfd_filename
;
2501 printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
2504 /* There are various functions like symbol_file_add,
2505 symfile_bfd_open, syms_from_objfile, etc., which might
2506 appear to do what we want. But they have various other
2507 effects which we *don't* want. So we just do stuff
2508 ourselves. We don't worry about mapped files (for one thing,
2509 any mapped file will be out of date). */
2511 /* If we get an error, blow away this objfile (not sure if
2512 that is the correct response for things like shared
2514 old_cleanups
= make_cleanup_free_objfile (objfile
);
2515 /* We need to do this whenever any symbols go away. */
2516 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
2518 if (exec_bfd
!= NULL
2519 && filename_cmp (bfd_get_filename (objfile
->obfd
),
2520 bfd_get_filename (exec_bfd
)) == 0)
2522 /* Reload EXEC_BFD without asking anything. */
2524 exec_file_attach (bfd_get_filename (objfile
->obfd
), 0);
2527 /* Keep the calls order approx. the same as in free_objfile. */
2529 /* Free the separate debug objfiles. It will be
2530 automatically recreated by sym_read. */
2531 free_objfile_separate_debug (objfile
);
2533 /* Remove any references to this objfile in the global
2535 preserve_values (objfile
);
2537 /* Nuke all the state that we will re-read. Much of the following
2538 code which sets things to NULL really is necessary to tell
2539 other parts of GDB that there is nothing currently there.
2541 Try to keep the freeing order compatible with free_objfile. */
2543 if (objfile
->sf
!= NULL
)
2545 (*objfile
->sf
->sym_finish
) (objfile
);
2548 clear_objfile_data (objfile
);
2550 /* Clean up any state BFD has sitting around. */
2552 struct bfd
*obfd
= objfile
->obfd
;
2554 obfd_filename
= bfd_get_filename (objfile
->obfd
);
2555 /* Open the new BFD before freeing the old one, so that
2556 the filename remains live. */
2557 objfile
->obfd
= gdb_bfd_open_maybe_remote (obfd_filename
);
2558 if (objfile
->obfd
== NULL
)
2560 /* We have to make a cleanup and error here, rather
2561 than erroring later, because once we unref OBFD,
2562 OBFD_FILENAME will be freed. */
2563 make_cleanup_bfd_unref (obfd
);
2564 error (_("Can't open %s to read symbols."), obfd_filename
);
2566 gdb_bfd_unref (obfd
);
2569 objfile
->name
= bfd_get_filename (objfile
->obfd
);
2570 /* bfd_openr sets cacheable to true, which is what we want. */
2571 if (!bfd_check_format (objfile
->obfd
, bfd_object
))
2572 error (_("Can't read symbols from %s: %s."), objfile
->name
,
2573 bfd_errmsg (bfd_get_error ()));
2575 /* Save the offsets, we will nuke them with the rest of the
2577 num_offsets
= objfile
->num_sections
;
2578 offsets
= ((struct section_offsets
*)
2579 alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets
)));
2580 memcpy (offsets
, objfile
->section_offsets
,
2581 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2583 /* FIXME: Do we have to free a whole linked list, or is this
2585 if (objfile
->global_psymbols
.list
)
2586 xfree (objfile
->global_psymbols
.list
);
2587 memset (&objfile
->global_psymbols
, 0,
2588 sizeof (objfile
->global_psymbols
));
2589 if (objfile
->static_psymbols
.list
)
2590 xfree (objfile
->static_psymbols
.list
);
2591 memset (&objfile
->static_psymbols
, 0,
2592 sizeof (objfile
->static_psymbols
));
2594 /* Free the obstacks for non-reusable objfiles. */
2595 psymbol_bcache_free (objfile
->psymbol_cache
);
2596 objfile
->psymbol_cache
= psymbol_bcache_init ();
2597 if (objfile
->demangled_names_hash
!= NULL
)
2599 htab_delete (objfile
->demangled_names_hash
);
2600 objfile
->demangled_names_hash
= NULL
;
2602 obstack_free (&objfile
->objfile_obstack
, 0);
2603 objfile
->sections
= NULL
;
2604 objfile
->symtabs
= NULL
;
2605 objfile
->psymtabs
= NULL
;
2606 objfile
->psymtabs_addrmap
= NULL
;
2607 objfile
->free_psymtabs
= NULL
;
2608 objfile
->template_symbols
= NULL
;
2609 objfile
->msymbols
= NULL
;
2610 objfile
->minimal_symbol_count
= 0;
2611 memset (&objfile
->msymbol_hash
, 0,
2612 sizeof (objfile
->msymbol_hash
));
2613 memset (&objfile
->msymbol_demangled_hash
, 0,
2614 sizeof (objfile
->msymbol_demangled_hash
));
2616 set_objfile_per_bfd (objfile
);
2618 /* obstack_init also initializes the obstack so it is
2619 empty. We could use obstack_specify_allocation but
2620 gdb_obstack.h specifies the alloc/dealloc functions. */
2621 obstack_init (&objfile
->objfile_obstack
);
2622 build_objfile_section_table (objfile
);
2623 terminate_minimal_symbol_table (objfile
);
2625 /* We use the same section offsets as from last time. I'm not
2626 sure whether that is always correct for shared libraries. */
2627 objfile
->section_offsets
= (struct section_offsets
*)
2628 obstack_alloc (&objfile
->objfile_obstack
,
2629 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2630 memcpy (objfile
->section_offsets
, offsets
,
2631 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2632 objfile
->num_sections
= num_offsets
;
2634 /* What the hell is sym_new_init for, anyway? The concept of
2635 distinguishing between the main file and additional files
2636 in this way seems rather dubious. */
2637 if (objfile
== symfile_objfile
)
2639 (*objfile
->sf
->sym_new_init
) (objfile
);
2642 (*objfile
->sf
->sym_init
) (objfile
);
2643 clear_complaints (&symfile_complaints
, 1, 1);
2645 objfile
->flags
&= ~OBJF_PSYMTABS_READ
;
2646 read_symbols (objfile
, 0);
2648 if (!objfile_has_symbols (objfile
))
2651 printf_unfiltered (_("(no debugging symbols found)\n"));
2655 /* We're done reading the symbol file; finish off complaints. */
2656 clear_complaints (&symfile_complaints
, 0, 1);
2658 /* Getting new symbols may change our opinion about what is
2661 reinit_frame_cache ();
2663 /* Discard cleanups as symbol reading was successful. */
2664 discard_cleanups (old_cleanups
);
2666 /* If the mtime has changed between the time we set new_modtime
2667 and now, we *want* this to be out of date, so don't call stat
2669 objfile
->mtime
= new_modtime
;
2670 init_entry_point_info (objfile
);
2672 VEC_safe_push (objfilep
, new_objfiles
, objfile
);
2680 /* Notify objfiles that we've modified objfile sections. */
2681 objfiles_changed ();
2683 clear_symtab_users (0);
2685 /* clear_objfile_data for each objfile was called before freeing it and
2686 observer_notify_new_objfile (NULL) has been called by
2687 clear_symtab_users above. Notify the new files now. */
2688 for (ix
= 0; VEC_iterate (objfilep
, new_objfiles
, ix
, objfile
); ix
++)
2689 observer_notify_new_objfile (objfile
);
2691 /* At least one objfile has changed, so we can consider that
2692 the executable we're debugging has changed too. */
2693 observer_notify_executable_changed ();
2696 do_cleanups (all_cleanups
);
2708 static filename_language
*filename_language_table
;
2709 static int fl_table_size
, fl_table_next
;
2712 add_filename_language (char *ext
, enum language lang
)
2714 if (fl_table_next
>= fl_table_size
)
2716 fl_table_size
+= 10;
2717 filename_language_table
=
2718 xrealloc (filename_language_table
,
2719 fl_table_size
* sizeof (*filename_language_table
));
2722 filename_language_table
[fl_table_next
].ext
= xstrdup (ext
);
2723 filename_language_table
[fl_table_next
].lang
= lang
;
2727 static char *ext_args
;
2729 show_ext_args (struct ui_file
*file
, int from_tty
,
2730 struct cmd_list_element
*c
, const char *value
)
2732 fprintf_filtered (file
,
2733 _("Mapping between filename extension "
2734 "and source language is \"%s\".\n"),
2739 set_ext_lang_command (char *args
, int from_tty
, struct cmd_list_element
*e
)
2742 char *cp
= ext_args
;
2745 /* First arg is filename extension, starting with '.' */
2747 error (_("'%s': Filename extension must begin with '.'"), ext_args
);
2749 /* Find end of first arg. */
2750 while (*cp
&& !isspace (*cp
))
2754 error (_("'%s': two arguments required -- "
2755 "filename extension and language"),
2758 /* Null-terminate first arg. */
2761 /* Find beginning of second arg, which should be a source language. */
2762 while (*cp
&& isspace (*cp
))
2766 error (_("'%s': two arguments required -- "
2767 "filename extension and language"),
2770 /* Lookup the language from among those we know. */
2771 lang
= language_enum (cp
);
2773 /* Now lookup the filename extension: do we already know it? */
2774 for (i
= 0; i
< fl_table_next
; i
++)
2775 if (0 == strcmp (ext_args
, filename_language_table
[i
].ext
))
2778 if (i
>= fl_table_next
)
2780 /* New file extension. */
2781 add_filename_language (ext_args
, lang
);
2785 /* Redefining a previously known filename extension. */
2788 /* query ("Really make files of type %s '%s'?", */
2789 /* ext_args, language_str (lang)); */
2791 xfree (filename_language_table
[i
].ext
);
2792 filename_language_table
[i
].ext
= xstrdup (ext_args
);
2793 filename_language_table
[i
].lang
= lang
;
2798 info_ext_lang_command (char *args
, int from_tty
)
2802 printf_filtered (_("Filename extensions and the languages they represent:"));
2803 printf_filtered ("\n\n");
2804 for (i
= 0; i
< fl_table_next
; i
++)
2805 printf_filtered ("\t%s\t- %s\n",
2806 filename_language_table
[i
].ext
,
2807 language_str (filename_language_table
[i
].lang
));
2811 init_filename_language_table (void)
2813 if (fl_table_size
== 0) /* Protect against repetition. */
2817 filename_language_table
=
2818 xmalloc (fl_table_size
* sizeof (*filename_language_table
));
2819 add_filename_language (".c", language_c
);
2820 add_filename_language (".d", language_d
);
2821 add_filename_language (".C", language_cplus
);
2822 add_filename_language (".cc", language_cplus
);
2823 add_filename_language (".cp", language_cplus
);
2824 add_filename_language (".cpp", language_cplus
);
2825 add_filename_language (".cxx", language_cplus
);
2826 add_filename_language (".c++", language_cplus
);
2827 add_filename_language (".java", language_java
);
2828 add_filename_language (".class", language_java
);
2829 add_filename_language (".m", language_objc
);
2830 add_filename_language (".f", language_fortran
);
2831 add_filename_language (".F", language_fortran
);
2832 add_filename_language (".for", language_fortran
);
2833 add_filename_language (".FOR", language_fortran
);
2834 add_filename_language (".ftn", language_fortran
);
2835 add_filename_language (".FTN", language_fortran
);
2836 add_filename_language (".fpp", language_fortran
);
2837 add_filename_language (".FPP", language_fortran
);
2838 add_filename_language (".f90", language_fortran
);
2839 add_filename_language (".F90", language_fortran
);
2840 add_filename_language (".f95", language_fortran
);
2841 add_filename_language (".F95", language_fortran
);
2842 add_filename_language (".f03", language_fortran
);
2843 add_filename_language (".F03", language_fortran
);
2844 add_filename_language (".f08", language_fortran
);
2845 add_filename_language (".F08", language_fortran
);
2846 add_filename_language (".s", language_asm
);
2847 add_filename_language (".sx", language_asm
);
2848 add_filename_language (".S", language_asm
);
2849 add_filename_language (".pas", language_pascal
);
2850 add_filename_language (".p", language_pascal
);
2851 add_filename_language (".pp", language_pascal
);
2852 add_filename_language (".adb", language_ada
);
2853 add_filename_language (".ads", language_ada
);
2854 add_filename_language (".a", language_ada
);
2855 add_filename_language (".ada", language_ada
);
2856 add_filename_language (".dg", language_ada
);
2861 deduce_language_from_filename (const char *filename
)
2866 if (filename
!= NULL
)
2867 if ((cp
= strrchr (filename
, '.')) != NULL
)
2868 for (i
= 0; i
< fl_table_next
; i
++)
2869 if (strcmp (cp
, filename_language_table
[i
].ext
) == 0)
2870 return filename_language_table
[i
].lang
;
2872 return language_unknown
;
2877 Allocate and partly initialize a new symbol table. Return a pointer
2878 to it. error() if no space.
2880 Caller must set these fields:
2889 allocate_symtab (const char *filename
, struct objfile
*objfile
)
2891 struct symtab
*symtab
;
2893 symtab
= (struct symtab
*)
2894 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symtab
));
2895 memset (symtab
, 0, sizeof (*symtab
));
2896 symtab
->filename
= (char *) bcache (filename
, strlen (filename
) + 1,
2897 objfile
->per_bfd
->filename_cache
);
2898 symtab
->fullname
= NULL
;
2899 symtab
->language
= deduce_language_from_filename (filename
);
2900 symtab
->debugformat
= "unknown";
2902 /* Hook it to the objfile it comes from. */
2904 symtab
->objfile
= objfile
;
2905 symtab
->next
= objfile
->symtabs
;
2906 objfile
->symtabs
= symtab
;
2908 if (symtab_create_debug
)
2910 /* Be a bit clever with debugging messages, and don't print objfile
2911 every time, only when it changes. */
2912 static char *last_objfile_name
= NULL
;
2914 if (last_objfile_name
== NULL
2915 || strcmp (last_objfile_name
, objfile
->name
) != 0)
2917 xfree (last_objfile_name
);
2918 last_objfile_name
= xstrdup (objfile
->name
);
2919 fprintf_unfiltered (gdb_stdlog
,
2920 "Creating one or more symtabs for objfile %s ...\n",
2923 fprintf_unfiltered (gdb_stdlog
,
2924 "Created symtab %s for module %s.\n",
2925 host_address_to_string (symtab
), filename
);
2932 /* Reset all data structures in gdb which may contain references to symbol
2933 table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */
2936 clear_symtab_users (int add_flags
)
2938 /* Someday, we should do better than this, by only blowing away
2939 the things that really need to be blown. */
2941 /* Clear the "current" symtab first, because it is no longer valid.
2942 breakpoint_re_set may try to access the current symtab. */
2943 clear_current_source_symtab_and_line ();
2946 if ((add_flags
& SYMFILE_DEFER_BP_RESET
) == 0)
2947 breakpoint_re_set ();
2948 clear_last_displayed_sal ();
2949 clear_pc_function_cache ();
2950 observer_notify_new_objfile (NULL
);
2952 /* Clear globals which might have pointed into a removed objfile.
2953 FIXME: It's not clear which of these are supposed to persist
2954 between expressions and which ought to be reset each time. */
2955 expression_context_block
= NULL
;
2956 innermost_block
= NULL
;
2958 /* Varobj may refer to old symbols, perform a cleanup. */
2959 varobj_invalidate ();
2964 clear_symtab_users_cleanup (void *ignore
)
2966 clear_symtab_users (0);
2970 The following code implements an abstraction for debugging overlay sections.
2972 The target model is as follows:
2973 1) The gnu linker will permit multiple sections to be mapped into the
2974 same VMA, each with its own unique LMA (or load address).
2975 2) It is assumed that some runtime mechanism exists for mapping the
2976 sections, one by one, from the load address into the VMA address.
2977 3) This code provides a mechanism for gdb to keep track of which
2978 sections should be considered to be mapped from the VMA to the LMA.
2979 This information is used for symbol lookup, and memory read/write.
2980 For instance, if a section has been mapped then its contents
2981 should be read from the VMA, otherwise from the LMA.
2983 Two levels of debugger support for overlays are available. One is
2984 "manual", in which the debugger relies on the user to tell it which
2985 overlays are currently mapped. This level of support is
2986 implemented entirely in the core debugger, and the information about
2987 whether a section is mapped is kept in the objfile->obj_section table.
2989 The second level of support is "automatic", and is only available if
2990 the target-specific code provides functionality to read the target's
2991 overlay mapping table, and translate its contents for the debugger
2992 (by updating the mapped state information in the obj_section tables).
2994 The interface is as follows:
2996 overlay map <name> -- tell gdb to consider this section mapped
2997 overlay unmap <name> -- tell gdb to consider this section unmapped
2998 overlay list -- list the sections that GDB thinks are mapped
2999 overlay read-target -- get the target's state of what's mapped
3000 overlay off/manual/auto -- set overlay debugging state
3001 Functional interface:
3002 find_pc_mapped_section(pc): if the pc is in the range of a mapped
3003 section, return that section.
3004 find_pc_overlay(pc): find any overlay section that contains
3005 the pc, either in its VMA or its LMA
3006 section_is_mapped(sect): true if overlay is marked as mapped
3007 section_is_overlay(sect): true if section's VMA != LMA
3008 pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
3009 pc_in_unmapped_range(...): true if pc belongs to section's LMA
3010 sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap
3011 overlay_mapped_address(...): map an address from section's LMA to VMA
3012 overlay_unmapped_address(...): map an address from section's VMA to LMA
3013 symbol_overlayed_address(...): Return a "current" address for symbol:
3014 either in VMA or LMA depending on whether
3015 the symbol's section is currently mapped. */
3017 /* Overlay debugging state: */
3019 enum overlay_debugging_state overlay_debugging
= ovly_off
;
3020 int overlay_cache_invalid
= 0; /* True if need to refresh mapped state. */
3022 /* Function: section_is_overlay (SECTION)
3023 Returns true if SECTION has VMA not equal to LMA, ie.
3024 SECTION is loaded at an address different from where it will "run". */
3027 section_is_overlay (struct obj_section
*section
)
3029 if (overlay_debugging
&& section
)
3031 bfd
*abfd
= section
->objfile
->obfd
;
3032 asection
*bfd_section
= section
->the_bfd_section
;
3034 if (bfd_section_lma (abfd
, bfd_section
) != 0
3035 && bfd_section_lma (abfd
, bfd_section
)
3036 != bfd_section_vma (abfd
, bfd_section
))
3043 /* Function: overlay_invalidate_all (void)
3044 Invalidate the mapped state of all overlay sections (mark it as stale). */
3047 overlay_invalidate_all (void)
3049 struct objfile
*objfile
;
3050 struct obj_section
*sect
;
3052 ALL_OBJSECTIONS (objfile
, sect
)
3053 if (section_is_overlay (sect
))
3054 sect
->ovly_mapped
= -1;
3057 /* Function: section_is_mapped (SECTION)
3058 Returns true if section is an overlay, and is currently mapped.
3060 Access to the ovly_mapped flag is restricted to this function, so
3061 that we can do automatic update. If the global flag
3062 OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
3063 overlay_invalidate_all. If the mapped state of the particular
3064 section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */
3067 section_is_mapped (struct obj_section
*osect
)
3069 struct gdbarch
*gdbarch
;
3071 if (osect
== 0 || !section_is_overlay (osect
))
3074 switch (overlay_debugging
)
3078 return 0; /* overlay debugging off */
3079 case ovly_auto
: /* overlay debugging automatic */
3080 /* Unles there is a gdbarch_overlay_update function,
3081 there's really nothing useful to do here (can't really go auto). */
3082 gdbarch
= get_objfile_arch (osect
->objfile
);
3083 if (gdbarch_overlay_update_p (gdbarch
))
3085 if (overlay_cache_invalid
)
3087 overlay_invalidate_all ();
3088 overlay_cache_invalid
= 0;
3090 if (osect
->ovly_mapped
== -1)
3091 gdbarch_overlay_update (gdbarch
, osect
);
3093 /* fall thru to manual case */
3094 case ovly_on
: /* overlay debugging manual */
3095 return osect
->ovly_mapped
== 1;
3099 /* Function: pc_in_unmapped_range
3100 If PC falls into the lma range of SECTION, return true, else false. */
3103 pc_in_unmapped_range (CORE_ADDR pc
, struct obj_section
*section
)
3105 if (section_is_overlay (section
))
3107 bfd
*abfd
= section
->objfile
->obfd
;
3108 asection
*bfd_section
= section
->the_bfd_section
;
3110 /* We assume the LMA is relocated by the same offset as the VMA. */
3111 bfd_vma size
= bfd_get_section_size (bfd_section
);
3112 CORE_ADDR offset
= obj_section_offset (section
);
3114 if (bfd_get_section_lma (abfd
, bfd_section
) + offset
<= pc
3115 && pc
< bfd_get_section_lma (abfd
, bfd_section
) + offset
+ size
)
3122 /* Function: pc_in_mapped_range
3123 If PC falls into the vma range of SECTION, return true, else false. */
3126 pc_in_mapped_range (CORE_ADDR pc
, struct obj_section
*section
)
3128 if (section_is_overlay (section
))
3130 if (obj_section_addr (section
) <= pc
3131 && pc
< obj_section_endaddr (section
))
3139 /* Return true if the mapped ranges of sections A and B overlap, false
3142 sections_overlap (struct obj_section
*a
, struct obj_section
*b
)
3144 CORE_ADDR a_start
= obj_section_addr (a
);
3145 CORE_ADDR a_end
= obj_section_endaddr (a
);
3146 CORE_ADDR b_start
= obj_section_addr (b
);
3147 CORE_ADDR b_end
= obj_section_endaddr (b
);
3149 return (a_start
< b_end
&& b_start
< a_end
);
3152 /* Function: overlay_unmapped_address (PC, SECTION)
3153 Returns the address corresponding to PC in the unmapped (load) range.
3154 May be the same as PC. */
3157 overlay_unmapped_address (CORE_ADDR pc
, struct obj_section
*section
)
3159 if (section_is_overlay (section
) && pc_in_mapped_range (pc
, section
))
3161 bfd
*abfd
= section
->objfile
->obfd
;
3162 asection
*bfd_section
= section
->the_bfd_section
;
3164 return pc
+ bfd_section_lma (abfd
, bfd_section
)
3165 - bfd_section_vma (abfd
, bfd_section
);
3171 /* Function: overlay_mapped_address (PC, SECTION)
3172 Returns the address corresponding to PC in the mapped (runtime) range.
3173 May be the same as PC. */
3176 overlay_mapped_address (CORE_ADDR pc
, struct obj_section
*section
)
3178 if (section_is_overlay (section
) && pc_in_unmapped_range (pc
, section
))
3180 bfd
*abfd
= section
->objfile
->obfd
;
3181 asection
*bfd_section
= section
->the_bfd_section
;
3183 return pc
+ bfd_section_vma (abfd
, bfd_section
)
3184 - bfd_section_lma (abfd
, bfd_section
);
3191 /* Function: symbol_overlayed_address
3192 Return one of two addresses (relative to the VMA or to the LMA),
3193 depending on whether the section is mapped or not. */
3196 symbol_overlayed_address (CORE_ADDR address
, struct obj_section
*section
)
3198 if (overlay_debugging
)
3200 /* If the symbol has no section, just return its regular address. */
3203 /* If the symbol's section is not an overlay, just return its
3205 if (!section_is_overlay (section
))
3207 /* If the symbol's section is mapped, just return its address. */
3208 if (section_is_mapped (section
))
3211 * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
3212 * then return its LOADED address rather than its vma address!!
3214 return overlay_unmapped_address (address
, section
);
3219 /* Function: find_pc_overlay (PC)
3220 Return the best-match overlay section for PC:
3221 If PC matches a mapped overlay section's VMA, return that section.
3222 Else if PC matches an unmapped section's VMA, return that section.
3223 Else if PC matches an unmapped section's LMA, return that section. */
3225 struct obj_section
*
3226 find_pc_overlay (CORE_ADDR pc
)
3228 struct objfile
*objfile
;
3229 struct obj_section
*osect
, *best_match
= NULL
;
3231 if (overlay_debugging
)
3232 ALL_OBJSECTIONS (objfile
, osect
)
3233 if (section_is_overlay (osect
))
3235 if (pc_in_mapped_range (pc
, osect
))
3237 if (section_is_mapped (osect
))
3242 else if (pc_in_unmapped_range (pc
, osect
))
3248 /* Function: find_pc_mapped_section (PC)
3249 If PC falls into the VMA address range of an overlay section that is
3250 currently marked as MAPPED, return that section. Else return NULL. */
3252 struct obj_section
*
3253 find_pc_mapped_section (CORE_ADDR pc
)
3255 struct objfile
*objfile
;
3256 struct obj_section
*osect
;
3258 if (overlay_debugging
)
3259 ALL_OBJSECTIONS (objfile
, osect
)
3260 if (pc_in_mapped_range (pc
, osect
) && section_is_mapped (osect
))
3266 /* Function: list_overlays_command
3267 Print a list of mapped sections and their PC ranges. */
3270 list_overlays_command (char *args
, int from_tty
)
3273 struct objfile
*objfile
;
3274 struct obj_section
*osect
;
3276 if (overlay_debugging
)
3277 ALL_OBJSECTIONS (objfile
, osect
)
3278 if (section_is_mapped (osect
))
3280 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3285 vma
= bfd_section_vma (objfile
->obfd
, osect
->the_bfd_section
);
3286 lma
= bfd_section_lma (objfile
->obfd
, osect
->the_bfd_section
);
3287 size
= bfd_get_section_size (osect
->the_bfd_section
);
3288 name
= bfd_section_name (objfile
->obfd
, osect
->the_bfd_section
);
3290 printf_filtered ("Section %s, loaded at ", name
);
3291 fputs_filtered (paddress (gdbarch
, lma
), gdb_stdout
);
3292 puts_filtered (" - ");
3293 fputs_filtered (paddress (gdbarch
, lma
+ size
), gdb_stdout
);
3294 printf_filtered (", mapped at ");
3295 fputs_filtered (paddress (gdbarch
, vma
), gdb_stdout
);
3296 puts_filtered (" - ");
3297 fputs_filtered (paddress (gdbarch
, vma
+ size
), gdb_stdout
);
3298 puts_filtered ("\n");
3303 printf_filtered (_("No sections are mapped.\n"));
3306 /* Function: map_overlay_command
3307 Mark the named section as mapped (ie. residing at its VMA address). */
3310 map_overlay_command (char *args
, int from_tty
)
3312 struct objfile
*objfile
, *objfile2
;
3313 struct obj_section
*sec
, *sec2
;
3315 if (!overlay_debugging
)
3316 error (_("Overlay debugging not enabled. Use "
3317 "either the 'overlay auto' or\n"
3318 "the 'overlay manual' command."));
3320 if (args
== 0 || *args
== 0)
3321 error (_("Argument required: name of an overlay section"));
3323 /* First, find a section matching the user supplied argument. */
3324 ALL_OBJSECTIONS (objfile
, sec
)
3325 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
3327 /* Now, check to see if the section is an overlay. */
3328 if (!section_is_overlay (sec
))
3329 continue; /* not an overlay section */
3331 /* Mark the overlay as "mapped". */
3332 sec
->ovly_mapped
= 1;
3334 /* Next, make a pass and unmap any sections that are
3335 overlapped by this new section: */
3336 ALL_OBJSECTIONS (objfile2
, sec2
)
3337 if (sec2
->ovly_mapped
&& sec
!= sec2
&& sections_overlap (sec
, sec2
))
3340 printf_unfiltered (_("Note: section %s unmapped by overlap\n"),
3341 bfd_section_name (objfile
->obfd
,
3342 sec2
->the_bfd_section
));
3343 sec2
->ovly_mapped
= 0; /* sec2 overlaps sec: unmap sec2. */
3347 error (_("No overlay section called %s"), args
);
3350 /* Function: unmap_overlay_command
3351 Mark the overlay section as unmapped
3352 (ie. resident in its LMA address range, rather than the VMA range). */
3355 unmap_overlay_command (char *args
, int from_tty
)
3357 struct objfile
*objfile
;
3358 struct obj_section
*sec
;
3360 if (!overlay_debugging
)
3361 error (_("Overlay debugging not enabled. "
3362 "Use either the 'overlay auto' or\n"
3363 "the 'overlay manual' command."));
3365 if (args
== 0 || *args
== 0)
3366 error (_("Argument required: name of an overlay section"));
3368 /* First, find a section matching the user supplied argument. */
3369 ALL_OBJSECTIONS (objfile
, sec
)
3370 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
3372 if (!sec
->ovly_mapped
)
3373 error (_("Section %s is not mapped"), args
);
3374 sec
->ovly_mapped
= 0;
3377 error (_("No overlay section called %s"), args
);
3380 /* Function: overlay_auto_command
3381 A utility command to turn on overlay debugging.
3382 Possibly this should be done via a set/show command. */
3385 overlay_auto_command (char *args
, int from_tty
)
3387 overlay_debugging
= ovly_auto
;
3388 enable_overlay_breakpoints ();
3390 printf_unfiltered (_("Automatic overlay debugging enabled."));
3393 /* Function: overlay_manual_command
3394 A utility command to turn on overlay debugging.
3395 Possibly this should be done via a set/show command. */
3398 overlay_manual_command (char *args
, int from_tty
)
3400 overlay_debugging
= ovly_on
;
3401 disable_overlay_breakpoints ();
3403 printf_unfiltered (_("Overlay debugging enabled."));
3406 /* Function: overlay_off_command
3407 A utility command to turn on overlay debugging.
3408 Possibly this should be done via a set/show command. */
3411 overlay_off_command (char *args
, int from_tty
)
3413 overlay_debugging
= ovly_off
;
3414 disable_overlay_breakpoints ();
3416 printf_unfiltered (_("Overlay debugging disabled."));
3420 overlay_load_command (char *args
, int from_tty
)
3422 struct gdbarch
*gdbarch
= get_current_arch ();
3424 if (gdbarch_overlay_update_p (gdbarch
))
3425 gdbarch_overlay_update (gdbarch
, NULL
);
3427 error (_("This target does not know how to read its overlay state."));
3430 /* Function: overlay_command
3431 A place-holder for a mis-typed command. */
3433 /* Command list chain containing all defined "overlay" subcommands. */
3434 static struct cmd_list_element
*overlaylist
;
3437 overlay_command (char *args
, int from_tty
)
3440 ("\"overlay\" must be followed by the name of an overlay command.\n");
3441 help_list (overlaylist
, "overlay ", -1, gdb_stdout
);
3445 /* Target Overlays for the "Simplest" overlay manager:
3447 This is GDB's default target overlay layer. It works with the
3448 minimal overlay manager supplied as an example by Cygnus. The
3449 entry point is via a function pointer "gdbarch_overlay_update",
3450 so targets that use a different runtime overlay manager can
3451 substitute their own overlay_update function and take over the
3454 The overlay_update function pokes around in the target's data structures
3455 to see what overlays are mapped, and updates GDB's overlay mapping with
3458 In this simple implementation, the target data structures are as follows:
3459 unsigned _novlys; /# number of overlay sections #/
3460 unsigned _ovly_table[_novlys][4] = {
3461 {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/
3462 {..., ..., ..., ...},
3464 unsigned _novly_regions; /# number of overlay regions #/
3465 unsigned _ovly_region_table[_novly_regions][3] = {
3466 {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/
3469 These functions will attempt to update GDB's mappedness state in the
3470 symbol section table, based on the target's mappedness state.
3472 To do this, we keep a cached copy of the target's _ovly_table, and
3473 attempt to detect when the cached copy is invalidated. The main
3474 entry point is "simple_overlay_update(SECT), which looks up SECT in
3475 the cached table and re-reads only the entry for that section from
3476 the target (whenever possible). */
3478 /* Cached, dynamically allocated copies of the target data structures: */
3479 static unsigned (*cache_ovly_table
)[4] = 0;
3480 static unsigned cache_novlys
= 0;
3481 static CORE_ADDR cache_ovly_table_base
= 0;
3484 VMA
, SIZE
, LMA
, MAPPED
3487 /* Throw away the cached copy of _ovly_table. */
3489 simple_free_overlay_table (void)
3491 if (cache_ovly_table
)
3492 xfree (cache_ovly_table
);
3494 cache_ovly_table
= NULL
;
3495 cache_ovly_table_base
= 0;
3498 /* Read an array of ints of size SIZE from the target into a local buffer.
3499 Convert to host order. int LEN is number of ints. */
3501 read_target_long_array (CORE_ADDR memaddr
, unsigned int *myaddr
,
3502 int len
, int size
, enum bfd_endian byte_order
)
3504 /* FIXME (alloca): Not safe if array is very large. */
3505 gdb_byte
*buf
= alloca (len
* size
);
3508 read_memory (memaddr
, buf
, len
* size
);
3509 for (i
= 0; i
< len
; i
++)
3510 myaddr
[i
] = extract_unsigned_integer (size
* i
+ buf
, size
, byte_order
);
3513 /* Find and grab a copy of the target _ovly_table
3514 (and _novlys, which is needed for the table's size). */
3516 simple_read_overlay_table (void)
3518 struct minimal_symbol
*novlys_msym
, *ovly_table_msym
;
3519 struct gdbarch
*gdbarch
;
3521 enum bfd_endian byte_order
;
3523 simple_free_overlay_table ();
3524 novlys_msym
= lookup_minimal_symbol ("_novlys", NULL
, NULL
);
3527 error (_("Error reading inferior's overlay table: "
3528 "couldn't find `_novlys' variable\n"
3529 "in inferior. Use `overlay manual' mode."));
3533 ovly_table_msym
= lookup_minimal_symbol ("_ovly_table", NULL
, NULL
);
3534 if (! ovly_table_msym
)
3536 error (_("Error reading inferior's overlay table: couldn't find "
3537 "`_ovly_table' array\n"
3538 "in inferior. Use `overlay manual' mode."));
3542 gdbarch
= get_objfile_arch (msymbol_objfile (ovly_table_msym
));
3543 word_size
= gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
;
3544 byte_order
= gdbarch_byte_order (gdbarch
);
3546 cache_novlys
= read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym
),
3549 = (void *) xmalloc (cache_novlys
* sizeof (*cache_ovly_table
));
3550 cache_ovly_table_base
= SYMBOL_VALUE_ADDRESS (ovly_table_msym
);
3551 read_target_long_array (cache_ovly_table_base
,
3552 (unsigned int *) cache_ovly_table
,
3553 cache_novlys
* 4, word_size
, byte_order
);
3555 return 1; /* SUCCESS */
3558 /* Function: simple_overlay_update_1
3559 A helper function for simple_overlay_update. Assuming a cached copy
3560 of _ovly_table exists, look through it to find an entry whose vma,
3561 lma and size match those of OSECT. Re-read the entry and make sure
3562 it still matches OSECT (else the table may no longer be valid).
3563 Set OSECT's mapped state to match the entry. Return: 1 for
3564 success, 0 for failure. */
3567 simple_overlay_update_1 (struct obj_section
*osect
)
3570 bfd
*obfd
= osect
->objfile
->obfd
;
3571 asection
*bsect
= osect
->the_bfd_section
;
3572 struct gdbarch
*gdbarch
= get_objfile_arch (osect
->objfile
);
3573 int word_size
= gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
;
3574 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3576 size
= bfd_get_section_size (osect
->the_bfd_section
);
3577 for (i
= 0; i
< cache_novlys
; i
++)
3578 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3579 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3580 /* && cache_ovly_table[i][SIZE] == size */ )
3582 read_target_long_array (cache_ovly_table_base
+ i
* word_size
,
3583 (unsigned int *) cache_ovly_table
[i
],
3584 4, word_size
, byte_order
);
3585 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3586 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3587 /* && cache_ovly_table[i][SIZE] == size */ )
3589 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3592 else /* Warning! Warning! Target's ovly table has changed! */
3598 /* Function: simple_overlay_update
3599 If OSECT is NULL, then update all sections' mapped state
3600 (after re-reading the entire target _ovly_table).
3601 If OSECT is non-NULL, then try to find a matching entry in the
3602 cached ovly_table and update only OSECT's mapped state.
3603 If a cached entry can't be found or the cache isn't valid, then
3604 re-read the entire cache, and go ahead and update all sections. */
3607 simple_overlay_update (struct obj_section
*osect
)
3609 struct objfile
*objfile
;
3611 /* Were we given an osect to look up? NULL means do all of them. */
3613 /* Have we got a cached copy of the target's overlay table? */
3614 if (cache_ovly_table
!= NULL
)
3616 /* Does its cached location match what's currently in the
3618 struct minimal_symbol
*minsym
3619 = lookup_minimal_symbol ("_ovly_table", NULL
, NULL
);
3622 error (_("Error reading inferior's overlay table: couldn't "
3623 "find `_ovly_table' array\n"
3624 "in inferior. Use `overlay manual' mode."));
3626 if (cache_ovly_table_base
== SYMBOL_VALUE_ADDRESS (minsym
))
3627 /* Then go ahead and try to look up this single section in
3629 if (simple_overlay_update_1 (osect
))
3630 /* Found it! We're done. */
3634 /* Cached table no good: need to read the entire table anew.
3635 Or else we want all the sections, in which case it's actually
3636 more efficient to read the whole table in one block anyway. */
3638 if (! simple_read_overlay_table ())
3641 /* Now may as well update all sections, even if only one was requested. */
3642 ALL_OBJSECTIONS (objfile
, osect
)
3643 if (section_is_overlay (osect
))
3646 bfd
*obfd
= osect
->objfile
->obfd
;
3647 asection
*bsect
= osect
->the_bfd_section
;
3649 size
= bfd_get_section_size (bsect
);
3650 for (i
= 0; i
< cache_novlys
; i
++)
3651 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3652 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3653 /* && cache_ovly_table[i][SIZE] == size */ )
3654 { /* obj_section matches i'th entry in ovly_table. */
3655 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3656 break; /* finished with inner for loop: break out. */
3661 /* Set the output sections and output offsets for section SECTP in
3662 ABFD. The relocation code in BFD will read these offsets, so we
3663 need to be sure they're initialized. We map each section to itself,
3664 with no offset; this means that SECTP->vma will be honored. */
3667 symfile_dummy_outputs (bfd
*abfd
, asection
*sectp
, void *dummy
)
3669 sectp
->output_section
= sectp
;
3670 sectp
->output_offset
= 0;
3673 /* Default implementation for sym_relocate. */
3677 default_symfile_relocate (struct objfile
*objfile
, asection
*sectp
,
3680 /* Use sectp->owner instead of objfile->obfd. sectp may point to a
3682 bfd
*abfd
= sectp
->owner
;
3684 /* We're only interested in sections with relocation
3686 if ((sectp
->flags
& SEC_RELOC
) == 0)
3689 /* We will handle section offsets properly elsewhere, so relocate as if
3690 all sections begin at 0. */
3691 bfd_map_over_sections (abfd
, symfile_dummy_outputs
, NULL
);
3693 return bfd_simple_get_relocated_section_contents (abfd
, sectp
, buf
, NULL
);
3696 /* Relocate the contents of a debug section SECTP in ABFD. The
3697 contents are stored in BUF if it is non-NULL, or returned in a
3698 malloc'd buffer otherwise.
3700 For some platforms and debug info formats, shared libraries contain
3701 relocations against the debug sections (particularly for DWARF-2;
3702 one affected platform is PowerPC GNU/Linux, although it depends on
3703 the version of the linker in use). Also, ELF object files naturally
3704 have unresolved relocations for their debug sections. We need to apply
3705 the relocations in order to get the locations of symbols correct.
3706 Another example that may require relocation processing, is the
3707 DWARF-2 .eh_frame section in .o files, although it isn't strictly a
3711 symfile_relocate_debug_section (struct objfile
*objfile
,
3712 asection
*sectp
, bfd_byte
*buf
)
3714 gdb_assert (objfile
->sf
->sym_relocate
);
3716 return (*objfile
->sf
->sym_relocate
) (objfile
, sectp
, buf
);
3719 struct symfile_segment_data
*
3720 get_symfile_segment_data (bfd
*abfd
)
3722 const struct sym_fns
*sf
= find_sym_fns (abfd
);
3727 return sf
->sym_segments (abfd
);
3731 free_symfile_segment_data (struct symfile_segment_data
*data
)
3733 xfree (data
->segment_bases
);
3734 xfree (data
->segment_sizes
);
3735 xfree (data
->segment_info
);
3741 - DATA, containing segment addresses from the object file ABFD, and
3742 the mapping from ABFD's sections onto the segments that own them,
3744 - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual
3745 segment addresses reported by the target,
3746 store the appropriate offsets for each section in OFFSETS.
3748 If there are fewer entries in SEGMENT_BASES than there are segments
3749 in DATA, then apply SEGMENT_BASES' last entry to all the segments.
3751 If there are more entries, then ignore the extra. The target may
3752 not be able to distinguish between an empty data segment and a
3753 missing data segment; a missing text segment is less plausible. */
3755 symfile_map_offsets_to_segments (bfd
*abfd
, struct symfile_segment_data
*data
,
3756 struct section_offsets
*offsets
,
3757 int num_segment_bases
,
3758 const CORE_ADDR
*segment_bases
)
3763 /* It doesn't make sense to call this function unless you have some
3764 segment base addresses. */
3765 gdb_assert (num_segment_bases
> 0);
3767 /* If we do not have segment mappings for the object file, we
3768 can not relocate it by segments. */
3769 gdb_assert (data
!= NULL
);
3770 gdb_assert (data
->num_segments
> 0);
3772 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
3774 int which
= data
->segment_info
[i
];
3776 gdb_assert (0 <= which
&& which
<= data
->num_segments
);
3778 /* Don't bother computing offsets for sections that aren't
3779 loaded as part of any segment. */
3783 /* Use the last SEGMENT_BASES entry as the address of any extra
3784 segments mentioned in DATA->segment_info. */
3785 if (which
> num_segment_bases
)
3786 which
= num_segment_bases
;
3788 offsets
->offsets
[i
] = (segment_bases
[which
- 1]
3789 - data
->segment_bases
[which
- 1]);
3796 symfile_find_segment_sections (struct objfile
*objfile
)
3798 bfd
*abfd
= objfile
->obfd
;
3801 struct symfile_segment_data
*data
;
3803 data
= get_symfile_segment_data (objfile
->obfd
);
3807 if (data
->num_segments
!= 1 && data
->num_segments
!= 2)
3809 free_symfile_segment_data (data
);
3813 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
3815 int which
= data
->segment_info
[i
];
3819 if (objfile
->sect_index_text
== -1)
3820 objfile
->sect_index_text
= sect
->index
;
3822 if (objfile
->sect_index_rodata
== -1)
3823 objfile
->sect_index_rodata
= sect
->index
;
3825 else if (which
== 2)
3827 if (objfile
->sect_index_data
== -1)
3828 objfile
->sect_index_data
= sect
->index
;
3830 if (objfile
->sect_index_bss
== -1)
3831 objfile
->sect_index_bss
= sect
->index
;
3835 free_symfile_segment_data (data
);
3839 _initialize_symfile (void)
3841 struct cmd_list_element
*c
;
3843 c
= add_cmd ("symbol-file", class_files
, symbol_file_command
, _("\
3844 Load symbol table from executable file FILE.\n\
3845 The `file' command can also load symbol tables, as well as setting the file\n\
3846 to execute."), &cmdlist
);
3847 set_cmd_completer (c
, filename_completer
);
3849 c
= add_cmd ("add-symbol-file", class_files
, add_symbol_file_command
, _("\
3850 Load symbols from FILE, assuming FILE has been dynamically loaded.\n\
3851 Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\
3852 ...]\nADDR is the starting address of the file's text.\n\
3853 The optional arguments are section-name section-address pairs and\n\
3854 should be specified if the data and bss segments are not contiguous\n\
3855 with the text. SECT is a section name to be loaded at SECT_ADDR."),
3857 set_cmd_completer (c
, filename_completer
);
3859 c
= add_cmd ("load", class_files
, load_command
, _("\
3860 Dynamically load FILE into the running program, and record its symbols\n\
3861 for access from GDB.\n\
3862 A load OFFSET may also be given."), &cmdlist
);
3863 set_cmd_completer (c
, filename_completer
);
3865 add_prefix_cmd ("overlay", class_support
, overlay_command
,
3866 _("Commands for debugging overlays."), &overlaylist
,
3867 "overlay ", 0, &cmdlist
);
3869 add_com_alias ("ovly", "overlay", class_alias
, 1);
3870 add_com_alias ("ov", "overlay", class_alias
, 1);
3872 add_cmd ("map-overlay", class_support
, map_overlay_command
,
3873 _("Assert that an overlay section is mapped."), &overlaylist
);
3875 add_cmd ("unmap-overlay", class_support
, unmap_overlay_command
,
3876 _("Assert that an overlay section is unmapped."), &overlaylist
);
3878 add_cmd ("list-overlays", class_support
, list_overlays_command
,
3879 _("List mappings of overlay sections."), &overlaylist
);
3881 add_cmd ("manual", class_support
, overlay_manual_command
,
3882 _("Enable overlay debugging."), &overlaylist
);
3883 add_cmd ("off", class_support
, overlay_off_command
,
3884 _("Disable overlay debugging."), &overlaylist
);
3885 add_cmd ("auto", class_support
, overlay_auto_command
,
3886 _("Enable automatic overlay debugging."), &overlaylist
);
3887 add_cmd ("load-target", class_support
, overlay_load_command
,
3888 _("Read the overlay mapping state from the target."), &overlaylist
);
3890 /* Filename extension to source language lookup table: */
3891 init_filename_language_table ();
3892 add_setshow_string_noescape_cmd ("extension-language", class_files
,
3894 Set mapping between filename extension and source language."), _("\
3895 Show mapping between filename extension and source language."), _("\
3896 Usage: set extension-language .foo bar"),
3897 set_ext_lang_command
,
3899 &setlist
, &showlist
);
3901 add_info ("extensions", info_ext_lang_command
,
3902 _("All filename extensions associated with a source language."));
3904 add_setshow_optional_filename_cmd ("debug-file-directory", class_support
,
3905 &debug_file_directory
, _("\
3906 Set the directories where separate debug symbols are searched for."), _("\
3907 Show the directories where separate debug symbols are searched for."), _("\
3908 Separate debug symbols are first searched for in the same\n\
3909 directory as the binary, then in the `" DEBUG_SUBDIRECTORY
"' subdirectory,\n\
3910 and lastly at the path of the directory of the binary with\n\
3911 each global debug-file-directory component prepended."),
3913 show_debug_file_directory
,
3914 &setlist
, &showlist
);