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"
59 #include "cli/cli-utils.h"
61 #include <sys/types.h>
63 #include "gdb_string.h"
71 int (*deprecated_ui_load_progress_hook
) (const char *section
,
73 void (*deprecated_show_load_progress
) (const char *section
,
74 unsigned long section_sent
,
75 unsigned long section_size
,
76 unsigned long total_sent
,
77 unsigned long total_size
);
78 void (*deprecated_pre_add_symbol_hook
) (const char *);
79 void (*deprecated_post_add_symbol_hook
) (void);
81 static void clear_symtab_users_cleanup (void *ignore
);
83 /* Global variables owned by this file. */
84 int readnow_symbol_files
; /* Read full symbols immediately. */
86 /* Functions this file defines. */
88 static void load_command (char *, int);
90 static void symbol_file_add_main_1 (char *args
, int from_tty
, int flags
);
92 static void add_symbol_file_command (char *, int);
94 bfd
*symfile_bfd_open (char *);
96 int get_section_index (struct objfile
*, char *);
98 static const struct sym_fns
*find_sym_fns (bfd
*);
100 static void decrement_reading_symtab (void *);
102 static void overlay_invalidate_all (void);
104 static void overlay_auto_command (char *, int);
106 static void overlay_manual_command (char *, int);
108 static void overlay_off_command (char *, int);
110 static void overlay_load_command (char *, int);
112 static void overlay_command (char *, int);
114 static void simple_free_overlay_table (void);
116 static void read_target_long_array (CORE_ADDR
, unsigned int *, int, int,
119 static int simple_read_overlay_table (void);
121 static int simple_overlay_update_1 (struct obj_section
*);
123 static void add_filename_language (char *ext
, enum language lang
);
125 static void info_ext_lang_command (char *args
, int from_tty
);
127 static void init_filename_language_table (void);
129 static void symfile_find_segment_sections (struct objfile
*objfile
);
131 void _initialize_symfile (void);
133 /* List of all available sym_fns. On gdb startup, each object file reader
134 calls add_symtab_fns() to register information on each format it is
137 typedef const struct sym_fns
*sym_fns_ptr
;
138 DEF_VEC_P (sym_fns_ptr
);
140 static VEC (sym_fns_ptr
) *symtab_fns
= NULL
;
142 /* If non-zero, shared library symbols will be added automatically
143 when the inferior is created, new libraries are loaded, or when
144 attaching to the inferior. This is almost always what users will
145 want to have happen; but for very large programs, the startup time
146 will be excessive, and so if this is a problem, the user can clear
147 this flag and then add the shared library symbols as needed. Note
148 that there is a potential for confusion, since if the shared
149 library symbols are not loaded, commands like "info fun" will *not*
150 report all the functions that are actually present. */
152 int auto_solib_add
= 1;
155 /* True if we are reading a symbol table. */
157 int currently_reading_symtab
= 0;
160 decrement_reading_symtab (void *dummy
)
162 currently_reading_symtab
--;
165 /* Increment currently_reading_symtab and return a cleanup that can be
166 used to decrement it. */
168 increment_reading_symtab (void)
170 ++currently_reading_symtab
;
171 return make_cleanup (decrement_reading_symtab
, NULL
);
174 /* Remember the lowest-addressed loadable section we've seen.
175 This function is called via bfd_map_over_sections.
177 In case of equal vmas, the section with the largest size becomes the
178 lowest-addressed loadable section.
180 If the vmas and sizes are equal, the last section is considered the
181 lowest-addressed loadable section. */
184 find_lowest_section (bfd
*abfd
, asection
*sect
, void *obj
)
186 asection
**lowest
= (asection
**) obj
;
188 if (0 == (bfd_get_section_flags (abfd
, sect
) & (SEC_ALLOC
| SEC_LOAD
)))
191 *lowest
= sect
; /* First loadable section */
192 else if (bfd_section_vma (abfd
, *lowest
) > bfd_section_vma (abfd
, sect
))
193 *lowest
= sect
; /* A lower loadable section */
194 else if (bfd_section_vma (abfd
, *lowest
) == bfd_section_vma (abfd
, sect
)
195 && (bfd_section_size (abfd
, (*lowest
))
196 <= bfd_section_size (abfd
, sect
)))
200 /* Create a new section_addr_info, with room for NUM_SECTIONS. */
202 struct section_addr_info
*
203 alloc_section_addr_info (size_t num_sections
)
205 struct section_addr_info
*sap
;
208 size
= (sizeof (struct section_addr_info
)
209 + sizeof (struct other_sections
) * (num_sections
- 1));
210 sap
= (struct section_addr_info
*) xmalloc (size
);
211 memset (sap
, 0, size
);
212 sap
->num_sections
= num_sections
;
217 /* Build (allocate and populate) a section_addr_info struct from
218 an existing section table. */
220 extern struct section_addr_info
*
221 build_section_addr_info_from_section_table (const struct target_section
*start
,
222 const struct target_section
*end
)
224 struct section_addr_info
*sap
;
225 const struct target_section
*stp
;
228 sap
= alloc_section_addr_info (end
- start
);
230 for (stp
= start
, oidx
= 0; stp
!= end
; stp
++)
232 if (bfd_get_section_flags (stp
->bfd
,
233 stp
->the_bfd_section
) & (SEC_ALLOC
| SEC_LOAD
)
234 && oidx
< end
- start
)
236 sap
->other
[oidx
].addr
= stp
->addr
;
237 sap
->other
[oidx
].name
238 = xstrdup (bfd_section_name (stp
->bfd
, stp
->the_bfd_section
));
239 sap
->other
[oidx
].sectindex
= stp
->the_bfd_section
->index
;
247 /* Create a section_addr_info from section offsets in ABFD. */
249 static struct section_addr_info
*
250 build_section_addr_info_from_bfd (bfd
*abfd
)
252 struct section_addr_info
*sap
;
254 struct bfd_section
*sec
;
256 sap
= alloc_section_addr_info (bfd_count_sections (abfd
));
257 for (i
= 0, sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
258 if (bfd_get_section_flags (abfd
, sec
) & (SEC_ALLOC
| SEC_LOAD
))
260 sap
->other
[i
].addr
= bfd_get_section_vma (abfd
, sec
);
261 sap
->other
[i
].name
= xstrdup (bfd_get_section_name (abfd
, sec
));
262 sap
->other
[i
].sectindex
= sec
->index
;
268 /* Create a section_addr_info from section offsets in OBJFILE. */
270 struct section_addr_info
*
271 build_section_addr_info_from_objfile (const struct objfile
*objfile
)
273 struct section_addr_info
*sap
;
276 /* Before reread_symbols gets rewritten it is not safe to call:
277 gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd));
279 sap
= build_section_addr_info_from_bfd (objfile
->obfd
);
280 for (i
= 0; i
< sap
->num_sections
&& sap
->other
[i
].name
; i
++)
282 int sectindex
= sap
->other
[i
].sectindex
;
284 sap
->other
[i
].addr
+= objfile
->section_offsets
->offsets
[sectindex
];
289 /* Free all memory allocated by build_section_addr_info_from_section_table. */
292 free_section_addr_info (struct section_addr_info
*sap
)
296 for (idx
= 0; idx
< sap
->num_sections
; idx
++)
297 if (sap
->other
[idx
].name
)
298 xfree (sap
->other
[idx
].name
);
303 /* Initialize OBJFILE's sect_index_* members. */
305 init_objfile_sect_indices (struct objfile
*objfile
)
310 sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
312 objfile
->sect_index_text
= sect
->index
;
314 sect
= bfd_get_section_by_name (objfile
->obfd
, ".data");
316 objfile
->sect_index_data
= sect
->index
;
318 sect
= bfd_get_section_by_name (objfile
->obfd
, ".bss");
320 objfile
->sect_index_bss
= sect
->index
;
322 sect
= bfd_get_section_by_name (objfile
->obfd
, ".rodata");
324 objfile
->sect_index_rodata
= sect
->index
;
326 /* This is where things get really weird... We MUST have valid
327 indices for the various sect_index_* members or gdb will abort.
328 So if for example, there is no ".text" section, we have to
329 accomodate that. First, check for a file with the standard
330 one or two segments. */
332 symfile_find_segment_sections (objfile
);
334 /* Except when explicitly adding symbol files at some address,
335 section_offsets contains nothing but zeros, so it doesn't matter
336 which slot in section_offsets the individual sect_index_* members
337 index into. So if they are all zero, it is safe to just point
338 all the currently uninitialized indices to the first slot. But
339 beware: if this is the main executable, it may be relocated
340 later, e.g. by the remote qOffsets packet, and then this will
341 be wrong! That's why we try segments first. */
343 for (i
= 0; i
< objfile
->num_sections
; i
++)
345 if (ANOFFSET (objfile
->section_offsets
, i
) != 0)
350 if (i
== objfile
->num_sections
)
352 if (objfile
->sect_index_text
== -1)
353 objfile
->sect_index_text
= 0;
354 if (objfile
->sect_index_data
== -1)
355 objfile
->sect_index_data
= 0;
356 if (objfile
->sect_index_bss
== -1)
357 objfile
->sect_index_bss
= 0;
358 if (objfile
->sect_index_rodata
== -1)
359 objfile
->sect_index_rodata
= 0;
363 /* The arguments to place_section. */
365 struct place_section_arg
367 struct section_offsets
*offsets
;
371 /* Find a unique offset to use for loadable section SECT if
372 the user did not provide an offset. */
375 place_section (bfd
*abfd
, asection
*sect
, void *obj
)
377 struct place_section_arg
*arg
= obj
;
378 CORE_ADDR
*offsets
= arg
->offsets
->offsets
, start_addr
;
380 ULONGEST align
= ((ULONGEST
) 1) << bfd_get_section_alignment (abfd
, sect
);
382 /* We are only interested in allocated sections. */
383 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
386 /* If the user specified an offset, honor it. */
387 if (offsets
[sect
->index
] != 0)
390 /* Otherwise, let's try to find a place for the section. */
391 start_addr
= (arg
->lowest
+ align
- 1) & -align
;
398 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
400 int indx
= cur_sec
->index
;
402 /* We don't need to compare against ourself. */
406 /* We can only conflict with allocated sections. */
407 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
410 /* If the section offset is 0, either the section has not been placed
411 yet, or it was the lowest section placed (in which case LOWEST
412 will be past its end). */
413 if (offsets
[indx
] == 0)
416 /* If this section would overlap us, then we must move up. */
417 if (start_addr
+ bfd_get_section_size (sect
) > offsets
[indx
]
418 && start_addr
< offsets
[indx
] + bfd_get_section_size (cur_sec
))
420 start_addr
= offsets
[indx
] + bfd_get_section_size (cur_sec
);
421 start_addr
= (start_addr
+ align
- 1) & -align
;
426 /* Otherwise, we appear to be OK. So far. */
431 offsets
[sect
->index
] = start_addr
;
432 arg
->lowest
= start_addr
+ bfd_get_section_size (sect
);
435 /* Store struct section_addr_info as prepared (made relative and with SECTINDEX
436 filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS
440 relative_addr_info_to_section_offsets (struct section_offsets
*section_offsets
,
442 struct section_addr_info
*addrs
)
446 memset (section_offsets
, 0, SIZEOF_N_SECTION_OFFSETS (num_sections
));
448 /* Now calculate offsets for section that were specified by the caller. */
449 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
451 struct other_sections
*osp
;
453 osp
= &addrs
->other
[i
];
454 if (osp
->sectindex
== -1)
457 /* Record all sections in offsets. */
458 /* The section_offsets in the objfile are here filled in using
460 section_offsets
->offsets
[osp
->sectindex
] = osp
->addr
;
464 /* Transform section name S for a name comparison. prelink can split section
465 `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly
466 prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address
467 of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss'
468 (`.sbss') section has invalid (increased) virtual address. */
471 addr_section_name (const char *s
)
473 if (strcmp (s
, ".dynbss") == 0)
475 if (strcmp (s
, ".sdynbss") == 0)
481 /* qsort comparator for addrs_section_sort. Sort entries in ascending order by
482 their (name, sectindex) pair. sectindex makes the sort by name stable. */
485 addrs_section_compar (const void *ap
, const void *bp
)
487 const struct other_sections
*a
= *((struct other_sections
**) ap
);
488 const struct other_sections
*b
= *((struct other_sections
**) bp
);
491 retval
= strcmp (addr_section_name (a
->name
), addr_section_name (b
->name
));
495 return a
->sectindex
- b
->sectindex
;
498 /* Provide sorted array of pointers to sections of ADDRS. The array is
499 terminated by NULL. Caller is responsible to call xfree for it. */
501 static struct other_sections
**
502 addrs_section_sort (struct section_addr_info
*addrs
)
504 struct other_sections
**array
;
507 /* `+ 1' for the NULL terminator. */
508 array
= xmalloc (sizeof (*array
) * (addrs
->num_sections
+ 1));
509 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
510 array
[i
] = &addrs
->other
[i
];
513 qsort (array
, i
, sizeof (*array
), addrs_section_compar
);
518 /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
519 also SECTINDEXes specific to ABFD there. This function can be used to
520 rebase ADDRS to start referencing different BFD than before. */
523 addr_info_make_relative (struct section_addr_info
*addrs
, bfd
*abfd
)
525 asection
*lower_sect
;
526 CORE_ADDR lower_offset
;
528 struct cleanup
*my_cleanup
;
529 struct section_addr_info
*abfd_addrs
;
530 struct other_sections
**addrs_sorted
, **abfd_addrs_sorted
;
531 struct other_sections
**addrs_to_abfd_addrs
;
533 /* Find lowest loadable section to be used as starting point for
534 continguous sections. */
536 bfd_map_over_sections (abfd
, find_lowest_section
, &lower_sect
);
537 if (lower_sect
== NULL
)
539 warning (_("no loadable sections found in added symbol-file %s"),
540 bfd_get_filename (abfd
));
544 lower_offset
= bfd_section_vma (bfd_get_filename (abfd
), lower_sect
);
546 /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections
547 in ABFD. Section names are not unique - there can be multiple sections of
548 the same name. Also the sections of the same name do not have to be
549 adjacent to each other. Some sections may be present only in one of the
550 files. Even sections present in both files do not have to be in the same
553 Use stable sort by name for the sections in both files. Then linearly
554 scan both lists matching as most of the entries as possible. */
556 addrs_sorted
= addrs_section_sort (addrs
);
557 my_cleanup
= make_cleanup (xfree
, addrs_sorted
);
559 abfd_addrs
= build_section_addr_info_from_bfd (abfd
);
560 make_cleanup_free_section_addr_info (abfd_addrs
);
561 abfd_addrs_sorted
= addrs_section_sort (abfd_addrs
);
562 make_cleanup (xfree
, abfd_addrs_sorted
);
564 /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and
565 ABFD_ADDRS_SORTED. */
567 addrs_to_abfd_addrs
= xzalloc (sizeof (*addrs_to_abfd_addrs
)
568 * addrs
->num_sections
);
569 make_cleanup (xfree
, addrs_to_abfd_addrs
);
571 while (*addrs_sorted
)
573 const char *sect_name
= addr_section_name ((*addrs_sorted
)->name
);
575 while (*abfd_addrs_sorted
576 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
580 if (*abfd_addrs_sorted
581 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
586 /* Make the found item directly addressable from ADDRS. */
587 index_in_addrs
= *addrs_sorted
- addrs
->other
;
588 gdb_assert (addrs_to_abfd_addrs
[index_in_addrs
] == NULL
);
589 addrs_to_abfd_addrs
[index_in_addrs
] = *abfd_addrs_sorted
;
591 /* Never use the same ABFD entry twice. */
598 /* Calculate offsets for the loadable sections.
599 FIXME! Sections must be in order of increasing loadable section
600 so that contiguous sections can use the lower-offset!!!
602 Adjust offsets if the segments are not contiguous.
603 If the section is contiguous, its offset should be set to
604 the offset of the highest loadable section lower than it
605 (the loadable section directly below it in memory).
606 this_offset = lower_offset = lower_addr - lower_orig_addr */
608 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
610 struct other_sections
*sect
= addrs_to_abfd_addrs
[i
];
614 /* This is the index used by BFD. */
615 addrs
->other
[i
].sectindex
= sect
->sectindex
;
617 if (addrs
->other
[i
].addr
!= 0)
619 addrs
->other
[i
].addr
-= sect
->addr
;
620 lower_offset
= addrs
->other
[i
].addr
;
623 addrs
->other
[i
].addr
= lower_offset
;
627 /* addr_section_name transformation is not used for SECT_NAME. */
628 const char *sect_name
= addrs
->other
[i
].name
;
630 /* This section does not exist in ABFD, which is normally
631 unexpected and we want to issue a warning.
633 However, the ELF prelinker does create a few sections which are
634 marked in the main executable as loadable (they are loaded in
635 memory from the DYNAMIC segment) and yet are not present in
636 separate debug info files. This is fine, and should not cause
637 a warning. Shared libraries contain just the section
638 ".gnu.liblist" but it is not marked as loadable there. There is
639 no other way to identify them than by their name as the sections
640 created by prelink have no special flags.
642 For the sections `.bss' and `.sbss' see addr_section_name. */
644 if (!(strcmp (sect_name
, ".gnu.liblist") == 0
645 || strcmp (sect_name
, ".gnu.conflict") == 0
646 || (strcmp (sect_name
, ".bss") == 0
648 && strcmp (addrs
->other
[i
- 1].name
, ".dynbss") == 0
649 && addrs_to_abfd_addrs
[i
- 1] != NULL
)
650 || (strcmp (sect_name
, ".sbss") == 0
652 && strcmp (addrs
->other
[i
- 1].name
, ".sdynbss") == 0
653 && addrs_to_abfd_addrs
[i
- 1] != NULL
)))
654 warning (_("section %s not found in %s"), sect_name
,
655 bfd_get_filename (abfd
));
657 addrs
->other
[i
].addr
= 0;
658 addrs
->other
[i
].sectindex
= -1;
662 do_cleanups (my_cleanup
);
665 /* Parse the user's idea of an offset for dynamic linking, into our idea
666 of how to represent it for fast symbol reading. This is the default
667 version of the sym_fns.sym_offsets function for symbol readers that
668 don't need to do anything special. It allocates a section_offsets table
669 for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
672 default_symfile_offsets (struct objfile
*objfile
,
673 struct section_addr_info
*addrs
)
675 objfile
->num_sections
= bfd_count_sections (objfile
->obfd
);
676 objfile
->section_offsets
= (struct section_offsets
*)
677 obstack_alloc (&objfile
->objfile_obstack
,
678 SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
));
679 relative_addr_info_to_section_offsets (objfile
->section_offsets
,
680 objfile
->num_sections
, addrs
);
682 /* For relocatable files, all loadable sections will start at zero.
683 The zero is meaningless, so try to pick arbitrary addresses such
684 that no loadable sections overlap. This algorithm is quadratic,
685 but the number of sections in a single object file is generally
687 if ((bfd_get_file_flags (objfile
->obfd
) & (EXEC_P
| DYNAMIC
)) == 0)
689 struct place_section_arg arg
;
690 bfd
*abfd
= objfile
->obfd
;
693 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
694 /* We do not expect this to happen; just skip this step if the
695 relocatable file has a section with an assigned VMA. */
696 if (bfd_section_vma (abfd
, cur_sec
) != 0)
701 CORE_ADDR
*offsets
= objfile
->section_offsets
->offsets
;
703 /* Pick non-overlapping offsets for sections the user did not
705 arg
.offsets
= objfile
->section_offsets
;
707 bfd_map_over_sections (objfile
->obfd
, place_section
, &arg
);
709 /* Correctly filling in the section offsets is not quite
710 enough. Relocatable files have two properties that
711 (most) shared objects do not:
713 - Their debug information will contain relocations. Some
714 shared libraries do also, but many do not, so this can not
717 - If there are multiple code sections they will be loaded
718 at different relative addresses in memory than they are
719 in the objfile, since all sections in the file will start
722 Because GDB has very limited ability to map from an
723 address in debug info to the correct code section,
724 it relies on adding SECT_OFF_TEXT to things which might be
725 code. If we clear all the section offsets, and set the
726 section VMAs instead, then symfile_relocate_debug_section
727 will return meaningful debug information pointing at the
730 GDB has too many different data structures for section
731 addresses - a bfd, objfile, and so_list all have section
732 tables, as does exec_ops. Some of these could probably
735 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
;
736 cur_sec
= cur_sec
->next
)
738 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
741 bfd_set_section_vma (abfd
, cur_sec
, offsets
[cur_sec
->index
]);
742 exec_set_section_address (bfd_get_filename (abfd
),
744 offsets
[cur_sec
->index
]);
745 offsets
[cur_sec
->index
] = 0;
750 /* Remember the bfd indexes for the .text, .data, .bss and
752 init_objfile_sect_indices (objfile
);
756 /* Divide the file into segments, which are individual relocatable units.
757 This is the default version of the sym_fns.sym_segments function for
758 symbol readers that do not have an explicit representation of segments.
759 It assumes that object files do not have segments, and fully linked
760 files have a single segment. */
762 struct symfile_segment_data
*
763 default_symfile_segments (bfd
*abfd
)
767 struct symfile_segment_data
*data
;
770 /* Relocatable files contain enough information to position each
771 loadable section independently; they should not be relocated
773 if ((bfd_get_file_flags (abfd
) & (EXEC_P
| DYNAMIC
)) == 0)
776 /* Make sure there is at least one loadable section in the file. */
777 for (sect
= abfd
->sections
; sect
!= NULL
; sect
= sect
->next
)
779 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
787 low
= bfd_get_section_vma (abfd
, sect
);
788 high
= low
+ bfd_get_section_size (sect
);
790 data
= XZALLOC (struct symfile_segment_data
);
791 data
->num_segments
= 1;
792 data
->segment_bases
= XCALLOC (1, CORE_ADDR
);
793 data
->segment_sizes
= XCALLOC (1, CORE_ADDR
);
795 num_sections
= bfd_count_sections (abfd
);
796 data
->segment_info
= XCALLOC (num_sections
, int);
798 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
802 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
805 vma
= bfd_get_section_vma (abfd
, sect
);
808 if (vma
+ bfd_get_section_size (sect
) > high
)
809 high
= vma
+ bfd_get_section_size (sect
);
811 data
->segment_info
[i
] = 1;
814 data
->segment_bases
[0] = low
;
815 data
->segment_sizes
[0] = high
- low
;
820 /* This is a convenience function to call sym_read for OBJFILE and
821 possibly force the partial symbols to be read. */
824 read_symbols (struct objfile
*objfile
, int add_flags
)
826 (*objfile
->sf
->sym_read
) (objfile
, add_flags
);
828 /* find_separate_debug_file_in_section should be called only if there is
829 single binary with no existing separate debug info file. */
830 if (!objfile_has_partial_symbols (objfile
)
831 && objfile
->separate_debug_objfile
== NULL
832 && objfile
->separate_debug_objfile_backlink
== NULL
)
834 bfd
*abfd
= find_separate_debug_file_in_section (objfile
);
835 struct cleanup
*cleanup
= make_cleanup_bfd_unref (abfd
);
838 symbol_file_add_separate (abfd
, add_flags
, objfile
);
840 do_cleanups (cleanup
);
842 if ((add_flags
& SYMFILE_NO_READ
) == 0)
843 require_partial_symbols (objfile
, 0);
846 /* Initialize entry point information for this objfile. */
849 init_entry_point_info (struct objfile
*objfile
)
851 /* Save startup file's range of PC addresses to help blockframe.c
852 decide where the bottom of the stack is. */
854 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
856 /* Executable file -- record its entry point so we'll recognize
857 the startup file because it contains the entry point. */
858 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
859 objfile
->ei
.entry_point_p
= 1;
861 else if (bfd_get_file_flags (objfile
->obfd
) & DYNAMIC
862 && bfd_get_start_address (objfile
->obfd
) != 0)
864 /* Some shared libraries may have entry points set and be
865 runnable. There's no clear way to indicate this, so just check
866 for values other than zero. */
867 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
868 objfile
->ei
.entry_point_p
= 1;
872 /* Examination of non-executable.o files. Short-circuit this stuff. */
873 objfile
->ei
.entry_point_p
= 0;
876 if (objfile
->ei
.entry_point_p
)
878 CORE_ADDR entry_point
= objfile
->ei
.entry_point
;
880 /* Make certain that the address points at real code, and not a
881 function descriptor. */
883 = gdbarch_convert_from_func_ptr_addr (objfile
->gdbarch
,
887 /* Remove any ISA markers, so that this matches entries in the
889 objfile
->ei
.entry_point
890 = gdbarch_addr_bits_remove (objfile
->gdbarch
, entry_point
);
894 /* Process a symbol file, as either the main file or as a dynamically
897 This function does not set the OBJFILE's entry-point info.
899 OBJFILE is where the symbols are to be read from.
901 ADDRS is the list of section load addresses. If the user has given
902 an 'add-symbol-file' command, then this is the list of offsets and
903 addresses he or she provided as arguments to the command; or, if
904 we're handling a shared library, these are the actual addresses the
905 sections are loaded at, according to the inferior's dynamic linker
906 (as gleaned by GDB's shared library code). We convert each address
907 into an offset from the section VMA's as it appears in the object
908 file, and then call the file's sym_offsets function to convert this
909 into a format-specific offset table --- a `struct section_offsets'.
910 If ADDRS is non-zero, OFFSETS must be zero.
912 OFFSETS is a table of section offsets already in the right
913 format-specific representation. NUM_OFFSETS is the number of
914 elements present in OFFSETS->offsets. If OFFSETS is non-zero, we
915 assume this is the proper table the call to sym_offsets described
916 above would produce. Instead of calling sym_offsets, we just dump
917 it right into objfile->section_offsets. (When we're re-reading
918 symbols from an objfile, we don't have the original load address
919 list any more; all we have is the section offset table.) If
920 OFFSETS is non-zero, ADDRS must be zero.
922 ADD_FLAGS encodes verbosity level, whether this is main symbol or
923 an extra symbol file such as dynamically loaded code, and wether
924 breakpoint reset should be deferred. */
927 syms_from_objfile_1 (struct objfile
*objfile
,
928 struct section_addr_info
*addrs
,
929 struct section_offsets
*offsets
,
933 struct section_addr_info
*local_addr
= NULL
;
934 struct cleanup
*old_chain
;
935 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
937 gdb_assert (! (addrs
&& offsets
));
939 objfile
->sf
= find_sym_fns (objfile
->obfd
);
941 if (objfile
->sf
== NULL
)
943 /* No symbols to load, but we still need to make sure
944 that the section_offsets table is allocated. */
945 int num_sections
= bfd_count_sections (objfile
->obfd
);
946 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
948 objfile
->num_sections
= num_sections
;
949 objfile
->section_offsets
950 = obstack_alloc (&objfile
->objfile_obstack
, size
);
951 memset (objfile
->section_offsets
, 0, size
);
955 /* Make sure that partially constructed symbol tables will be cleaned up
956 if an error occurs during symbol reading. */
957 old_chain
= make_cleanup_free_objfile (objfile
);
959 /* If ADDRS and OFFSETS are both NULL, put together a dummy address
960 list. We now establish the convention that an addr of zero means
961 no load address was specified. */
962 if (! addrs
&& ! offsets
)
965 = alloc_section_addr_info (bfd_count_sections (objfile
->obfd
));
966 make_cleanup (xfree
, local_addr
);
970 /* Now either addrs or offsets is non-zero. */
974 /* We will modify the main symbol table, make sure that all its users
975 will be cleaned up if an error occurs during symbol reading. */
976 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
978 /* Since no error yet, throw away the old symbol table. */
980 if (symfile_objfile
!= NULL
)
982 free_objfile (symfile_objfile
);
983 gdb_assert (symfile_objfile
== NULL
);
986 /* Currently we keep symbols from the add-symbol-file command.
987 If the user wants to get rid of them, they should do "symbol-file"
988 without arguments first. Not sure this is the best behavior
991 (*objfile
->sf
->sym_new_init
) (objfile
);
994 /* Convert addr into an offset rather than an absolute address.
995 We find the lowest address of a loaded segment in the objfile,
996 and assume that <addr> is where that got loaded.
998 We no longer warn if the lowest section is not a text segment (as
999 happens for the PA64 port. */
1000 if (addrs
&& addrs
->other
[0].name
)
1001 addr_info_make_relative (addrs
, objfile
->obfd
);
1003 /* Initialize symbol reading routines for this objfile, allow complaints to
1004 appear for this new file, and record how verbose to be, then do the
1005 initial symbol reading for this file. */
1007 (*objfile
->sf
->sym_init
) (objfile
);
1008 clear_complaints (&symfile_complaints
, 1, add_flags
& SYMFILE_VERBOSE
);
1011 (*objfile
->sf
->sym_offsets
) (objfile
, addrs
);
1014 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
1016 /* Just copy in the offset table directly as given to us. */
1017 objfile
->num_sections
= num_offsets
;
1018 objfile
->section_offsets
1019 = ((struct section_offsets
*)
1020 obstack_alloc (&objfile
->objfile_obstack
, size
));
1021 memcpy (objfile
->section_offsets
, offsets
, size
);
1023 init_objfile_sect_indices (objfile
);
1026 read_symbols (objfile
, add_flags
);
1028 /* Discard cleanups as symbol reading was successful. */
1030 discard_cleanups (old_chain
);
1034 /* Same as syms_from_objfile_1, but also initializes the objfile
1035 entry-point info. */
1038 syms_from_objfile (struct objfile
*objfile
,
1039 struct section_addr_info
*addrs
,
1040 struct section_offsets
*offsets
,
1044 syms_from_objfile_1 (objfile
, addrs
, offsets
, num_offsets
, add_flags
);
1045 init_entry_point_info (objfile
);
1048 /* Perform required actions after either reading in the initial
1049 symbols for a new objfile, or mapping in the symbols from a reusable
1050 objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */
1053 new_symfile_objfile (struct objfile
*objfile
, int add_flags
)
1055 /* If this is the main symbol file we have to clean up all users of the
1056 old main symbol file. Otherwise it is sufficient to fixup all the
1057 breakpoints that may have been redefined by this symbol file. */
1058 if (add_flags
& SYMFILE_MAINLINE
)
1060 /* OK, make it the "real" symbol file. */
1061 symfile_objfile
= objfile
;
1063 clear_symtab_users (add_flags
);
1065 else if ((add_flags
& SYMFILE_DEFER_BP_RESET
) == 0)
1067 breakpoint_re_set ();
1070 /* We're done reading the symbol file; finish off complaints. */
1071 clear_complaints (&symfile_complaints
, 0, add_flags
& SYMFILE_VERBOSE
);
1074 /* Process a symbol file, as either the main file or as a dynamically
1077 ABFD is a BFD already open on the file, as from symfile_bfd_open.
1078 A new reference is acquired by this function.
1080 ADD_FLAGS encodes verbosity, whether this is main symbol file or
1081 extra, such as dynamically loaded code, and what to do with breakpoins.
1083 ADDRS, OFFSETS, and NUM_OFFSETS are as described for
1084 syms_from_objfile, above.
1085 ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS.
1087 PARENT is the original objfile if ABFD is a separate debug info file.
1088 Otherwise PARENT is NULL.
1090 Upon success, returns a pointer to the objfile that was added.
1091 Upon failure, jumps back to command level (never returns). */
1093 static struct objfile
*
1094 symbol_file_add_with_addrs_or_offsets (bfd
*abfd
,
1096 struct section_addr_info
*addrs
,
1097 struct section_offsets
*offsets
,
1099 int flags
, struct objfile
*parent
)
1101 struct objfile
*objfile
;
1102 const char *name
= bfd_get_filename (abfd
);
1103 const int from_tty
= add_flags
& SYMFILE_VERBOSE
;
1104 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
1105 const int should_print
= ((from_tty
|| info_verbose
)
1106 && (readnow_symbol_files
1107 || (add_flags
& SYMFILE_NO_READ
) == 0));
1109 if (readnow_symbol_files
)
1111 flags
|= OBJF_READNOW
;
1112 add_flags
&= ~SYMFILE_NO_READ
;
1115 /* Give user a chance to burp if we'd be
1116 interactively wiping out any existing symbols. */
1118 if ((have_full_symbols () || have_partial_symbols ())
1121 && !query (_("Load new symbol table from \"%s\"? "), name
))
1122 error (_("Not confirmed."));
1124 objfile
= allocate_objfile (abfd
, flags
| (mainline
? OBJF_MAINLINE
: 0));
1127 add_separate_debug_objfile (objfile
, parent
);
1129 /* We either created a new mapped symbol table, mapped an existing
1130 symbol table file which has not had initial symbol reading
1131 performed, or need to read an unmapped symbol table. */
1134 if (deprecated_pre_add_symbol_hook
)
1135 deprecated_pre_add_symbol_hook (name
);
1138 printf_unfiltered (_("Reading symbols from %s..."), name
);
1140 gdb_flush (gdb_stdout
);
1143 syms_from_objfile (objfile
, addrs
, offsets
, num_offsets
,
1146 /* We now have at least a partial symbol table. Check to see if the
1147 user requested that all symbols be read on initial access via either
1148 the gdb startup command line or on a per symbol file basis. Expand
1149 all partial symbol tables for this objfile if so. */
1151 if ((flags
& OBJF_READNOW
))
1155 printf_unfiltered (_("expanding to full symbols..."));
1157 gdb_flush (gdb_stdout
);
1161 objfile
->sf
->qf
->expand_all_symtabs (objfile
);
1164 if (should_print
&& !objfile_has_symbols (objfile
))
1167 printf_unfiltered (_("(no debugging symbols found)..."));
1173 if (deprecated_post_add_symbol_hook
)
1174 deprecated_post_add_symbol_hook ();
1176 printf_unfiltered (_("done.\n"));
1179 /* We print some messages regardless of whether 'from_tty ||
1180 info_verbose' is true, so make sure they go out at the right
1182 gdb_flush (gdb_stdout
);
1184 if (objfile
->sf
== NULL
)
1186 observer_notify_new_objfile (objfile
);
1187 return objfile
; /* No symbols. */
1190 new_symfile_objfile (objfile
, add_flags
);
1192 observer_notify_new_objfile (objfile
);
1194 bfd_cache_close_all ();
1198 /* Add BFD as a separate debug file for OBJFILE. */
1201 symbol_file_add_separate (bfd
*bfd
, int symfile_flags
, struct objfile
*objfile
)
1203 struct objfile
*new_objfile
;
1204 struct section_addr_info
*sap
;
1205 struct cleanup
*my_cleanup
;
1207 /* Create section_addr_info. We can't directly use offsets from OBJFILE
1208 because sections of BFD may not match sections of OBJFILE and because
1209 vma may have been modified by tools such as prelink. */
1210 sap
= build_section_addr_info_from_objfile (objfile
);
1211 my_cleanup
= make_cleanup_free_section_addr_info (sap
);
1213 new_objfile
= symbol_file_add_with_addrs_or_offsets
1214 (bfd
, symfile_flags
,
1216 objfile
->flags
& (OBJF_REORDERED
| OBJF_SHARED
| OBJF_READNOW
1220 do_cleanups (my_cleanup
);
1223 /* Process the symbol file ABFD, as either the main file or as a
1224 dynamically loaded file.
1226 See symbol_file_add_with_addrs_or_offsets's comments for
1229 symbol_file_add_from_bfd (bfd
*abfd
, int add_flags
,
1230 struct section_addr_info
*addrs
,
1231 int flags
, struct objfile
*parent
)
1233 return symbol_file_add_with_addrs_or_offsets (abfd
, add_flags
, addrs
, 0, 0,
1238 /* Process a symbol file, as either the main file or as a dynamically
1239 loaded file. See symbol_file_add_with_addrs_or_offsets's comments
1242 symbol_file_add (char *name
, int add_flags
, struct section_addr_info
*addrs
,
1245 bfd
*bfd
= symfile_bfd_open (name
);
1246 struct cleanup
*cleanup
= make_cleanup_bfd_unref (bfd
);
1247 struct objfile
*objf
;
1249 objf
= symbol_file_add_from_bfd (bfd
, add_flags
, addrs
, flags
, NULL
);
1250 do_cleanups (cleanup
);
1255 /* Call symbol_file_add() with default values and update whatever is
1256 affected by the loading of a new main().
1257 Used when the file is supplied in the gdb command line
1258 and by some targets with special loading requirements.
1259 The auxiliary function, symbol_file_add_main_1(), has the flags
1260 argument for the switches that can only be specified in the symbol_file
1264 symbol_file_add_main (char *args
, int from_tty
)
1266 symbol_file_add_main_1 (args
, from_tty
, 0);
1270 symbol_file_add_main_1 (char *args
, int from_tty
, int flags
)
1272 const int add_flags
= (current_inferior ()->symfile_flags
1273 | SYMFILE_MAINLINE
| (from_tty
? SYMFILE_VERBOSE
: 0));
1275 symbol_file_add (args
, add_flags
, NULL
, flags
);
1277 /* Getting new symbols may change our opinion about
1278 what is frameless. */
1279 reinit_frame_cache ();
1281 if ((flags
& SYMFILE_NO_READ
) == 0)
1282 set_initial_language ();
1286 symbol_file_clear (int from_tty
)
1288 if ((have_full_symbols () || have_partial_symbols ())
1291 ? !query (_("Discard symbol table from `%s'? "),
1292 symfile_objfile
->name
)
1293 : !query (_("Discard symbol table? "))))
1294 error (_("Not confirmed."));
1296 /* solib descriptors may have handles to objfiles. Wipe them before their
1297 objfiles get stale by free_all_objfiles. */
1298 no_shared_libraries (NULL
, from_tty
);
1300 free_all_objfiles ();
1302 gdb_assert (symfile_objfile
== NULL
);
1304 printf_unfiltered (_("No symbol file now.\n"));
1308 get_debug_link_info (struct objfile
*objfile
, unsigned long *crc32_out
)
1311 bfd_size_type debuglink_size
;
1312 unsigned long crc32
;
1316 sect
= bfd_get_section_by_name (objfile
->obfd
, ".gnu_debuglink");
1321 debuglink_size
= bfd_section_size (objfile
->obfd
, sect
);
1323 contents
= xmalloc (debuglink_size
);
1324 bfd_get_section_contents (objfile
->obfd
, sect
, contents
,
1325 (file_ptr
)0, (bfd_size_type
)debuglink_size
);
1327 /* Crc value is stored after the filename, aligned up to 4 bytes. */
1328 crc_offset
= strlen (contents
) + 1;
1329 crc_offset
= (crc_offset
+ 3) & ~3;
1331 crc32
= bfd_get_32 (objfile
->obfd
, (bfd_byte
*) (contents
+ crc_offset
));
1337 /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and
1338 return 1. Otherwise print a warning and return 0. ABFD seek position is
1342 get_file_crc (bfd
*abfd
, unsigned long *file_crc_return
)
1344 unsigned long file_crc
= 0;
1346 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0)
1348 warning (_("Problem reading \"%s\" for CRC: %s"),
1349 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1355 gdb_byte buffer
[8 * 1024];
1356 bfd_size_type count
;
1358 count
= bfd_bread (buffer
, sizeof (buffer
), abfd
);
1359 if (count
== (bfd_size_type
) -1)
1361 warning (_("Problem reading \"%s\" for CRC: %s"),
1362 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1367 file_crc
= bfd_calc_gnu_debuglink_crc32 (file_crc
, buffer
, count
);
1370 *file_crc_return
= file_crc
;
1375 separate_debug_file_exists (const char *name
, unsigned long crc
,
1376 struct objfile
*parent_objfile
)
1378 unsigned long file_crc
;
1381 struct stat parent_stat
, abfd_stat
;
1382 int verified_as_different
;
1384 /* Find a separate debug info file as if symbols would be present in
1385 PARENT_OBJFILE itself this function would not be called. .gnu_debuglink
1386 section can contain just the basename of PARENT_OBJFILE without any
1387 ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where
1388 the separate debug infos with the same basename can exist. */
1390 if (filename_cmp (name
, parent_objfile
->name
) == 0)
1393 abfd
= gdb_bfd_open_maybe_remote (name
);
1398 /* Verify symlinks were not the cause of filename_cmp name difference above.
1400 Some operating systems, e.g. Windows, do not provide a meaningful
1401 st_ino; they always set it to zero. (Windows does provide a
1402 meaningful st_dev.) Do not indicate a duplicate library in that
1403 case. While there is no guarantee that a system that provides
1404 meaningful inode numbers will never set st_ino to zero, this is
1405 merely an optimization, so we do not need to worry about false
1408 if (bfd_stat (abfd
, &abfd_stat
) == 0
1409 && abfd_stat
.st_ino
!= 0
1410 && bfd_stat (parent_objfile
->obfd
, &parent_stat
) == 0)
1412 if (abfd_stat
.st_dev
== parent_stat
.st_dev
1413 && abfd_stat
.st_ino
== parent_stat
.st_ino
)
1415 gdb_bfd_unref (abfd
);
1418 verified_as_different
= 1;
1421 verified_as_different
= 0;
1423 file_crc_p
= get_file_crc (abfd
, &file_crc
);
1425 gdb_bfd_unref (abfd
);
1430 if (crc
!= file_crc
)
1432 /* If one (or both) the files are accessed for example the via "remote:"
1433 gdbserver way it does not support the bfd_stat operation. Verify
1434 whether those two files are not the same manually. */
1436 if (!verified_as_different
&& !parent_objfile
->crc32_p
)
1438 parent_objfile
->crc32_p
= get_file_crc (parent_objfile
->obfd
,
1439 &parent_objfile
->crc32
);
1440 if (!parent_objfile
->crc32_p
)
1444 if (verified_as_different
|| parent_objfile
->crc32
!= file_crc
)
1445 warning (_("the debug information found in \"%s\""
1446 " does not match \"%s\" (CRC mismatch).\n"),
1447 name
, parent_objfile
->name
);
1455 char *debug_file_directory
= NULL
;
1457 show_debug_file_directory (struct ui_file
*file
, int from_tty
,
1458 struct cmd_list_element
*c
, const char *value
)
1460 fprintf_filtered (file
,
1461 _("The directory where separate debug "
1462 "symbols are searched for is \"%s\".\n"),
1466 #if ! defined (DEBUG_SUBDIRECTORY)
1467 #define DEBUG_SUBDIRECTORY ".debug"
1470 /* Find a separate debuginfo file for OBJFILE, using DIR as the directory
1471 where the original file resides (may not be the same as
1472 dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are
1473 looking for. Returns the name of the debuginfo, of NULL. */
1476 find_separate_debug_file (const char *dir
,
1477 const char *canon_dir
,
1478 const char *debuglink
,
1479 unsigned long crc32
, struct objfile
*objfile
)
1484 VEC (char_ptr
) *debugdir_vec
;
1485 struct cleanup
*back_to
;
1488 /* Set I to max (strlen (canon_dir), strlen (dir)). */
1490 if (canon_dir
!= NULL
&& strlen (canon_dir
) > i
)
1491 i
= strlen (canon_dir
);
1493 debugfile
= xmalloc (strlen (debug_file_directory
) + 1
1495 + strlen (DEBUG_SUBDIRECTORY
)
1497 + strlen (debuglink
)
1500 /* First try in the same directory as the original file. */
1501 strcpy (debugfile
, dir
);
1502 strcat (debugfile
, debuglink
);
1504 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1507 /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
1508 strcpy (debugfile
, dir
);
1509 strcat (debugfile
, DEBUG_SUBDIRECTORY
);
1510 strcat (debugfile
, "/");
1511 strcat (debugfile
, debuglink
);
1513 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1516 /* Then try in the global debugfile directories.
1518 Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
1519 cause "/..." lookups. */
1521 debugdir_vec
= dirnames_to_char_ptr_vec (debug_file_directory
);
1522 back_to
= make_cleanup_free_char_ptr_vec (debugdir_vec
);
1524 for (ix
= 0; VEC_iterate (char_ptr
, debugdir_vec
, ix
, debugdir
); ++ix
)
1526 strcpy (debugfile
, debugdir
);
1527 strcat (debugfile
, "/");
1528 strcat (debugfile
, dir
);
1529 strcat (debugfile
, debuglink
);
1531 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1534 /* If the file is in the sysroot, try using its base path in the
1535 global debugfile directory. */
1536 if (canon_dir
!= NULL
1537 && filename_ncmp (canon_dir
, gdb_sysroot
,
1538 strlen (gdb_sysroot
)) == 0
1539 && IS_DIR_SEPARATOR (canon_dir
[strlen (gdb_sysroot
)]))
1541 strcpy (debugfile
, debugdir
);
1542 strcat (debugfile
, canon_dir
+ strlen (gdb_sysroot
));
1543 strcat (debugfile
, "/");
1544 strcat (debugfile
, debuglink
);
1546 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1551 do_cleanups (back_to
);
1556 /* Modify PATH to contain only "directory/" part of PATH.
1557 If there were no directory separators in PATH, PATH will be empty
1558 string on return. */
1561 terminate_after_last_dir_separator (char *path
)
1565 /* Strip off the final filename part, leaving the directory name,
1566 followed by a slash. The directory can be relative or absolute. */
1567 for (i
= strlen(path
) - 1; i
>= 0; i
--)
1568 if (IS_DIR_SEPARATOR (path
[i
]))
1571 /* If I is -1 then no directory is present there and DIR will be "". */
1575 /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section).
1576 Returns pathname, or NULL. */
1579 find_separate_debug_file_by_debuglink (struct objfile
*objfile
)
1582 char *dir
, *canon_dir
;
1584 unsigned long crc32
;
1585 struct cleanup
*cleanups
;
1587 debuglink
= get_debug_link_info (objfile
, &crc32
);
1589 if (debuglink
== NULL
)
1591 /* There's no separate debug info, hence there's no way we could
1592 load it => no warning. */
1596 cleanups
= make_cleanup (xfree
, debuglink
);
1597 dir
= xstrdup (objfile
->name
);
1598 make_cleanup (xfree
, dir
);
1599 terminate_after_last_dir_separator (dir
);
1600 canon_dir
= lrealpath (dir
);
1602 debugfile
= find_separate_debug_file (dir
, canon_dir
, debuglink
,
1606 if (debugfile
== NULL
)
1609 /* For PR gdb/9538, try again with realpath (if different from the
1614 if (lstat (objfile
->name
, &st_buf
) == 0 && S_ISLNK(st_buf
.st_mode
))
1618 symlink_dir
= lrealpath (objfile
->name
);
1619 if (symlink_dir
!= NULL
)
1621 make_cleanup (xfree
, symlink_dir
);
1622 terminate_after_last_dir_separator (symlink_dir
);
1623 if (strcmp (dir
, symlink_dir
) != 0)
1625 /* Different directory, so try using it. */
1626 debugfile
= find_separate_debug_file (symlink_dir
,
1634 #endif /* HAVE_LSTAT */
1637 do_cleanups (cleanups
);
1642 /* This is the symbol-file command. Read the file, analyze its
1643 symbols, and add a struct symtab to a symtab list. The syntax of
1644 the command is rather bizarre:
1646 1. The function buildargv implements various quoting conventions
1647 which are undocumented and have little or nothing in common with
1648 the way things are quoted (or not quoted) elsewhere in GDB.
1650 2. Options are used, which are not generally used in GDB (perhaps
1651 "set mapped on", "set readnow on" would be better)
1653 3. The order of options matters, which is contrary to GNU
1654 conventions (because it is confusing and inconvenient). */
1657 symbol_file_command (char *args
, int from_tty
)
1663 symbol_file_clear (from_tty
);
1667 char **argv
= gdb_buildargv (args
);
1668 int flags
= OBJF_USERLOADED
;
1669 struct cleanup
*cleanups
;
1672 cleanups
= make_cleanup_freeargv (argv
);
1673 while (*argv
!= NULL
)
1675 if (strcmp (*argv
, "-readnow") == 0)
1676 flags
|= OBJF_READNOW
;
1677 else if (**argv
== '-')
1678 error (_("unknown option `%s'"), *argv
);
1681 symbol_file_add_main_1 (*argv
, from_tty
, flags
);
1689 error (_("no symbol file name was specified"));
1691 do_cleanups (cleanups
);
1695 /* Set the initial language.
1697 FIXME: A better solution would be to record the language in the
1698 psymtab when reading partial symbols, and then use it (if known) to
1699 set the language. This would be a win for formats that encode the
1700 language in an easily discoverable place, such as DWARF. For
1701 stabs, we can jump through hoops looking for specially named
1702 symbols or try to intuit the language from the specific type of
1703 stabs we find, but we can't do that until later when we read in
1707 set_initial_language (void)
1709 enum language lang
= language_unknown
;
1711 if (language_of_main
!= language_unknown
)
1712 lang
= language_of_main
;
1715 const char *filename
;
1717 filename
= find_main_filename ();
1718 if (filename
!= NULL
)
1719 lang
= deduce_language_from_filename (filename
);
1722 if (lang
== language_unknown
)
1724 /* Make C the default language */
1728 set_language (lang
);
1729 expected_language
= current_language
; /* Don't warn the user. */
1732 /* If NAME is a remote name open the file using remote protocol, otherwise
1733 open it normally. Returns a new reference to the BFD. On error,
1734 returns NULL with the BFD error set. */
1737 gdb_bfd_open_maybe_remote (const char *name
)
1741 if (remote_filename_p (name
))
1742 result
= remote_bfd_open (name
, gnutarget
);
1744 result
= gdb_bfd_open (name
, gnutarget
, -1);
1750 /* Open the file specified by NAME and hand it off to BFD for
1751 preliminary analysis. Return a newly initialized bfd *, which
1752 includes a newly malloc'd` copy of NAME (tilde-expanded and made
1753 absolute). In case of trouble, error() is called. */
1756 symfile_bfd_open (char *name
)
1760 char *absolute_name
;
1762 if (remote_filename_p (name
))
1764 sym_bfd
= remote_bfd_open (name
, gnutarget
);
1766 error (_("`%s': can't open to read symbols: %s."), name
,
1767 bfd_errmsg (bfd_get_error ()));
1769 if (!bfd_check_format (sym_bfd
, bfd_object
))
1771 make_cleanup_bfd_unref (sym_bfd
);
1772 error (_("`%s': can't read symbols: %s."), name
,
1773 bfd_errmsg (bfd_get_error ()));
1779 name
= tilde_expand (name
); /* Returns 1st new malloc'd copy. */
1781 /* Look down path for it, allocate 2nd new malloc'd copy. */
1782 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, name
,
1783 O_RDONLY
| O_BINARY
, &absolute_name
);
1784 #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
1787 char *exename
= alloca (strlen (name
) + 5);
1789 strcat (strcpy (exename
, name
), ".exe");
1790 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, exename
,
1791 O_RDONLY
| O_BINARY
, &absolute_name
);
1796 make_cleanup (xfree
, name
);
1797 perror_with_name (name
);
1801 name
= absolute_name
;
1802 make_cleanup (xfree
, name
);
1804 sym_bfd
= gdb_bfd_open (name
, gnutarget
, desc
);
1807 make_cleanup (xfree
, name
);
1808 error (_("`%s': can't open to read symbols: %s."), name
,
1809 bfd_errmsg (bfd_get_error ()));
1811 bfd_set_cacheable (sym_bfd
, 1);
1813 if (!bfd_check_format (sym_bfd
, bfd_object
))
1815 make_cleanup_bfd_unref (sym_bfd
);
1816 error (_("`%s': can't read symbols: %s."), name
,
1817 bfd_errmsg (bfd_get_error ()));
1823 /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if
1824 the section was not found. */
1827 get_section_index (struct objfile
*objfile
, char *section_name
)
1829 asection
*sect
= bfd_get_section_by_name (objfile
->obfd
, section_name
);
1837 /* Link SF into the global symtab_fns list. Called on startup by the
1838 _initialize routine in each object file format reader, to register
1839 information about each format the reader is prepared to handle. */
1842 add_symtab_fns (const struct sym_fns
*sf
)
1844 VEC_safe_push (sym_fns_ptr
, symtab_fns
, sf
);
1847 /* Initialize OBJFILE to read symbols from its associated BFD. It
1848 either returns or calls error(). The result is an initialized
1849 struct sym_fns in the objfile structure, that contains cached
1850 information about the symbol file. */
1852 static const struct sym_fns
*
1853 find_sym_fns (bfd
*abfd
)
1855 const struct sym_fns
*sf
;
1856 enum bfd_flavour our_flavour
= bfd_get_flavour (abfd
);
1859 if (our_flavour
== bfd_target_srec_flavour
1860 || our_flavour
== bfd_target_ihex_flavour
1861 || our_flavour
== bfd_target_tekhex_flavour
)
1862 return NULL
; /* No symbols. */
1864 for (i
= 0; VEC_iterate (sym_fns_ptr
, symtab_fns
, i
, sf
); ++i
)
1865 if (our_flavour
== sf
->sym_flavour
)
1868 error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."),
1869 bfd_get_target (abfd
));
1873 /* This function runs the load command of our current target. */
1876 load_command (char *arg
, int from_tty
)
1880 /* The user might be reloading because the binary has changed. Take
1881 this opportunity to check. */
1882 reopen_exec_file ();
1890 parg
= arg
= get_exec_file (1);
1892 /* Count how many \ " ' tab space there are in the name. */
1893 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1901 /* We need to quote this string so buildargv can pull it apart. */
1902 char *temp
= xmalloc (strlen (arg
) + count
+ 1 );
1906 make_cleanup (xfree
, temp
);
1909 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1911 strncpy (ptemp
, prev
, parg
- prev
);
1912 ptemp
+= parg
- prev
;
1916 strcpy (ptemp
, prev
);
1922 target_load (arg
, from_tty
);
1924 /* After re-loading the executable, we don't really know which
1925 overlays are mapped any more. */
1926 overlay_cache_invalid
= 1;
1929 /* This version of "load" should be usable for any target. Currently
1930 it is just used for remote targets, not inftarg.c or core files,
1931 on the theory that only in that case is it useful.
1933 Avoiding xmodem and the like seems like a win (a) because we don't have
1934 to worry about finding it, and (b) On VMS, fork() is very slow and so
1935 we don't want to run a subprocess. On the other hand, I'm not sure how
1936 performance compares. */
1938 static int validate_download
= 0;
1940 /* Callback service function for generic_load (bfd_map_over_sections). */
1943 add_section_size_callback (bfd
*abfd
, asection
*asec
, void *data
)
1945 bfd_size_type
*sum
= data
;
1947 *sum
+= bfd_get_section_size (asec
);
1950 /* Opaque data for load_section_callback. */
1951 struct load_section_data
{
1952 CORE_ADDR load_offset
;
1953 struct load_progress_data
*progress_data
;
1954 VEC(memory_write_request_s
) *requests
;
1957 /* Opaque data for load_progress. */
1958 struct load_progress_data
{
1959 /* Cumulative data. */
1960 unsigned long write_count
;
1961 unsigned long data_count
;
1962 bfd_size_type total_size
;
1965 /* Opaque data for load_progress for a single section. */
1966 struct load_progress_section_data
{
1967 struct load_progress_data
*cumulative
;
1969 /* Per-section data. */
1970 const char *section_name
;
1971 ULONGEST section_sent
;
1972 ULONGEST section_size
;
1977 /* Target write callback routine for progress reporting. */
1980 load_progress (ULONGEST bytes
, void *untyped_arg
)
1982 struct load_progress_section_data
*args
= untyped_arg
;
1983 struct load_progress_data
*totals
;
1986 /* Writing padding data. No easy way to get at the cumulative
1987 stats, so just ignore this. */
1990 totals
= args
->cumulative
;
1992 if (bytes
== 0 && args
->section_sent
== 0)
1994 /* The write is just starting. Let the user know we've started
1996 ui_out_message (current_uiout
, 0, "Loading section %s, size %s lma %s\n",
1997 args
->section_name
, hex_string (args
->section_size
),
1998 paddress (target_gdbarch (), args
->lma
));
2002 if (validate_download
)
2004 /* Broken memories and broken monitors manifest themselves here
2005 when bring new computers to life. This doubles already slow
2007 /* NOTE: cagney/1999-10-18: A more efficient implementation
2008 might add a verify_memory() method to the target vector and
2009 then use that. remote.c could implement that method using
2010 the ``qCRC'' packet. */
2011 gdb_byte
*check
= xmalloc (bytes
);
2012 struct cleanup
*verify_cleanups
= make_cleanup (xfree
, check
);
2014 if (target_read_memory (args
->lma
, check
, bytes
) != 0)
2015 error (_("Download verify read failed at %s"),
2016 paddress (target_gdbarch (), args
->lma
));
2017 if (memcmp (args
->buffer
, check
, bytes
) != 0)
2018 error (_("Download verify compare failed at %s"),
2019 paddress (target_gdbarch (), args
->lma
));
2020 do_cleanups (verify_cleanups
);
2022 totals
->data_count
+= bytes
;
2024 args
->buffer
+= bytes
;
2025 totals
->write_count
+= 1;
2026 args
->section_sent
+= bytes
;
2027 if (check_quit_flag ()
2028 || (deprecated_ui_load_progress_hook
!= NULL
2029 && deprecated_ui_load_progress_hook (args
->section_name
,
2030 args
->section_sent
)))
2031 error (_("Canceled the download"));
2033 if (deprecated_show_load_progress
!= NULL
)
2034 deprecated_show_load_progress (args
->section_name
,
2038 totals
->total_size
);
2041 /* Callback service function for generic_load (bfd_map_over_sections). */
2044 load_section_callback (bfd
*abfd
, asection
*asec
, void *data
)
2046 struct memory_write_request
*new_request
;
2047 struct load_section_data
*args
= data
;
2048 struct load_progress_section_data
*section_data
;
2049 bfd_size_type size
= bfd_get_section_size (asec
);
2051 const char *sect_name
= bfd_get_section_name (abfd
, asec
);
2053 if ((bfd_get_section_flags (abfd
, asec
) & SEC_LOAD
) == 0)
2059 new_request
= VEC_safe_push (memory_write_request_s
,
2060 args
->requests
, NULL
);
2061 memset (new_request
, 0, sizeof (struct memory_write_request
));
2062 section_data
= xcalloc (1, sizeof (struct load_progress_section_data
));
2063 new_request
->begin
= bfd_section_lma (abfd
, asec
) + args
->load_offset
;
2064 new_request
->end
= new_request
->begin
+ size
; /* FIXME Should size
2066 new_request
->data
= xmalloc (size
);
2067 new_request
->baton
= section_data
;
2069 buffer
= new_request
->data
;
2071 section_data
->cumulative
= args
->progress_data
;
2072 section_data
->section_name
= sect_name
;
2073 section_data
->section_size
= size
;
2074 section_data
->lma
= new_request
->begin
;
2075 section_data
->buffer
= buffer
;
2077 bfd_get_section_contents (abfd
, asec
, buffer
, 0, size
);
2080 /* Clean up an entire memory request vector, including load
2081 data and progress records. */
2084 clear_memory_write_data (void *arg
)
2086 VEC(memory_write_request_s
) **vec_p
= arg
;
2087 VEC(memory_write_request_s
) *vec
= *vec_p
;
2089 struct memory_write_request
*mr
;
2091 for (i
= 0; VEC_iterate (memory_write_request_s
, vec
, i
, mr
); ++i
)
2096 VEC_free (memory_write_request_s
, vec
);
2100 generic_load (char *args
, int from_tty
)
2103 struct timeval start_time
, end_time
;
2105 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
2106 struct load_section_data cbdata
;
2107 struct load_progress_data total_progress
;
2108 struct ui_out
*uiout
= current_uiout
;
2113 memset (&cbdata
, 0, sizeof (cbdata
));
2114 memset (&total_progress
, 0, sizeof (total_progress
));
2115 cbdata
.progress_data
= &total_progress
;
2117 make_cleanup (clear_memory_write_data
, &cbdata
.requests
);
2120 error_no_arg (_("file to load"));
2122 argv
= gdb_buildargv (args
);
2123 make_cleanup_freeargv (argv
);
2125 filename
= tilde_expand (argv
[0]);
2126 make_cleanup (xfree
, filename
);
2128 if (argv
[1] != NULL
)
2132 cbdata
.load_offset
= strtoulst (argv
[1], &endptr
, 0);
2134 /* If the last word was not a valid number then
2135 treat it as a file name with spaces in. */
2136 if (argv
[1] == endptr
)
2137 error (_("Invalid download offset:%s."), argv
[1]);
2139 if (argv
[2] != NULL
)
2140 error (_("Too many parameters."));
2143 /* Open the file for loading. */
2144 loadfile_bfd
= gdb_bfd_open (filename
, gnutarget
, -1);
2145 if (loadfile_bfd
== NULL
)
2147 perror_with_name (filename
);
2151 make_cleanup_bfd_unref (loadfile_bfd
);
2153 if (!bfd_check_format (loadfile_bfd
, bfd_object
))
2155 error (_("\"%s\" is not an object file: %s"), filename
,
2156 bfd_errmsg (bfd_get_error ()));
2159 bfd_map_over_sections (loadfile_bfd
, add_section_size_callback
,
2160 (void *) &total_progress
.total_size
);
2162 bfd_map_over_sections (loadfile_bfd
, load_section_callback
, &cbdata
);
2164 gettimeofday (&start_time
, NULL
);
2166 if (target_write_memory_blocks (cbdata
.requests
, flash_discard
,
2167 load_progress
) != 0)
2168 error (_("Load failed"));
2170 gettimeofday (&end_time
, NULL
);
2172 entry
= bfd_get_start_address (loadfile_bfd
);
2173 entry
= gdbarch_addr_bits_remove (target_gdbarch (), entry
);
2174 ui_out_text (uiout
, "Start address ");
2175 ui_out_field_fmt (uiout
, "address", "%s", paddress (target_gdbarch (), entry
));
2176 ui_out_text (uiout
, ", load size ");
2177 ui_out_field_fmt (uiout
, "load-size", "%lu", total_progress
.data_count
);
2178 ui_out_text (uiout
, "\n");
2179 /* We were doing this in remote-mips.c, I suspect it is right
2180 for other targets too. */
2181 regcache_write_pc (get_current_regcache (), entry
);
2183 /* Reset breakpoints, now that we have changed the load image. For
2184 instance, breakpoints may have been set (or reset, by
2185 post_create_inferior) while connected to the target but before we
2186 loaded the program. In that case, the prologue analyzer could
2187 have read instructions from the target to find the right
2188 breakpoint locations. Loading has changed the contents of that
2191 breakpoint_re_set ();
2193 /* FIXME: are we supposed to call symbol_file_add or not? According
2194 to a comment from remote-mips.c (where a call to symbol_file_add
2195 was commented out), making the call confuses GDB if more than one
2196 file is loaded in. Some targets do (e.g., remote-vx.c) but
2197 others don't (or didn't - perhaps they have all been deleted). */
2199 print_transfer_performance (gdb_stdout
, total_progress
.data_count
,
2200 total_progress
.write_count
,
2201 &start_time
, &end_time
);
2203 do_cleanups (old_cleanups
);
2206 /* Report how fast the transfer went. */
2209 print_transfer_performance (struct ui_file
*stream
,
2210 unsigned long data_count
,
2211 unsigned long write_count
,
2212 const struct timeval
*start_time
,
2213 const struct timeval
*end_time
)
2215 ULONGEST time_count
;
2216 struct ui_out
*uiout
= current_uiout
;
2218 /* Compute the elapsed time in milliseconds, as a tradeoff between
2219 accuracy and overflow. */
2220 time_count
= (end_time
->tv_sec
- start_time
->tv_sec
) * 1000;
2221 time_count
+= (end_time
->tv_usec
- start_time
->tv_usec
) / 1000;
2223 ui_out_text (uiout
, "Transfer rate: ");
2226 unsigned long rate
= ((ULONGEST
) data_count
* 1000) / time_count
;
2228 if (ui_out_is_mi_like_p (uiout
))
2230 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
* 8);
2231 ui_out_text (uiout
, " bits/sec");
2233 else if (rate
< 1024)
2235 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
);
2236 ui_out_text (uiout
, " bytes/sec");
2240 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
/ 1024);
2241 ui_out_text (uiout
, " KB/sec");
2246 ui_out_field_fmt (uiout
, "transferred-bits", "%lu", (data_count
* 8));
2247 ui_out_text (uiout
, " bits in <1 sec");
2249 if (write_count
> 0)
2251 ui_out_text (uiout
, ", ");
2252 ui_out_field_fmt (uiout
, "write-rate", "%lu", data_count
/ write_count
);
2253 ui_out_text (uiout
, " bytes/write");
2255 ui_out_text (uiout
, ".\n");
2258 /* This function allows the addition of incrementally linked object files.
2259 It does not modify any state in the target, only in the debugger. */
2260 /* Note: ezannoni 2000-04-13 This function/command used to have a
2261 special case syntax for the rombug target (Rombug is the boot
2262 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
2263 rombug case, the user doesn't need to supply a text address,
2264 instead a call to target_link() (in target.c) would supply the
2265 value to use. We are now discontinuing this type of ad hoc syntax. */
2268 add_symbol_file_command (char *args
, int from_tty
)
2270 struct gdbarch
*gdbarch
= get_current_arch ();
2271 char *filename
= NULL
;
2272 int flags
= OBJF_USERLOADED
;
2274 int section_index
= 0;
2278 int expecting_sec_name
= 0;
2279 int expecting_sec_addr
= 0;
2288 struct section_addr_info
*section_addrs
;
2289 struct sect_opt
*sect_opts
= NULL
;
2290 size_t num_sect_opts
= 0;
2291 struct cleanup
*my_cleanups
= make_cleanup (null_cleanup
, NULL
);
2294 sect_opts
= (struct sect_opt
*) xmalloc (num_sect_opts
2295 * sizeof (struct sect_opt
));
2300 error (_("add-symbol-file takes a file name and an address"));
2302 argv
= gdb_buildargv (args
);
2303 make_cleanup_freeargv (argv
);
2305 for (arg
= argv
[0], argcnt
= 0; arg
!= NULL
; arg
= argv
[++argcnt
])
2307 /* Process the argument. */
2310 /* The first argument is the file name. */
2311 filename
= tilde_expand (arg
);
2312 make_cleanup (xfree
, filename
);
2317 /* The second argument is always the text address at which
2318 to load the program. */
2319 sect_opts
[section_index
].name
= ".text";
2320 sect_opts
[section_index
].value
= arg
;
2321 if (++section_index
>= num_sect_opts
)
2324 sect_opts
= ((struct sect_opt
*)
2325 xrealloc (sect_opts
,
2327 * sizeof (struct sect_opt
)));
2332 /* It's an option (starting with '-') or it's an argument
2337 if (strcmp (arg
, "-readnow") == 0)
2338 flags
|= OBJF_READNOW
;
2339 else if (strcmp (arg
, "-s") == 0)
2341 expecting_sec_name
= 1;
2342 expecting_sec_addr
= 1;
2347 if (expecting_sec_name
)
2349 sect_opts
[section_index
].name
= arg
;
2350 expecting_sec_name
= 0;
2353 if (expecting_sec_addr
)
2355 sect_opts
[section_index
].value
= arg
;
2356 expecting_sec_addr
= 0;
2357 if (++section_index
>= num_sect_opts
)
2360 sect_opts
= ((struct sect_opt
*)
2361 xrealloc (sect_opts
,
2363 * sizeof (struct sect_opt
)));
2367 error (_("USAGE: add-symbol-file <filename> <textaddress>"
2368 " [-readnow] [-s <secname> <addr>]*"));
2373 /* This command takes at least two arguments. The first one is a
2374 filename, and the second is the address where this file has been
2375 loaded. Abort now if this address hasn't been provided by the
2377 if (section_index
< 1)
2378 error (_("The address where %s has been loaded is missing"), filename
);
2380 /* Print the prompt for the query below. And save the arguments into
2381 a sect_addr_info structure to be passed around to other
2382 functions. We have to split this up into separate print
2383 statements because hex_string returns a local static
2386 printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename
);
2387 section_addrs
= alloc_section_addr_info (section_index
);
2388 make_cleanup (xfree
, section_addrs
);
2389 for (i
= 0; i
< section_index
; i
++)
2392 char *val
= sect_opts
[i
].value
;
2393 char *sec
= sect_opts
[i
].name
;
2395 addr
= parse_and_eval_address (val
);
2397 /* Here we store the section offsets in the order they were
2398 entered on the command line. */
2399 section_addrs
->other
[sec_num
].name
= sec
;
2400 section_addrs
->other
[sec_num
].addr
= addr
;
2401 printf_unfiltered ("\t%s_addr = %s\n", sec
,
2402 paddress (gdbarch
, addr
));
2405 /* The object's sections are initialized when a
2406 call is made to build_objfile_section_table (objfile).
2407 This happens in reread_symbols.
2408 At this point, we don't know what file type this is,
2409 so we can't determine what section names are valid. */
2412 if (from_tty
&& (!query ("%s", "")))
2413 error (_("Not confirmed."));
2415 symbol_file_add (filename
, from_tty
? SYMFILE_VERBOSE
: 0,
2416 section_addrs
, flags
);
2418 /* Getting new symbols may change our opinion about what is
2420 reinit_frame_cache ();
2421 do_cleanups (my_cleanups
);
2425 typedef struct objfile
*objfilep
;
2427 DEF_VEC_P (objfilep
);
2429 /* Re-read symbols if a symbol-file has changed. */
2431 reread_symbols (void)
2433 struct objfile
*objfile
;
2435 struct stat new_statbuf
;
2437 VEC (objfilep
) *new_objfiles
= NULL
;
2438 struct cleanup
*all_cleanups
;
2440 all_cleanups
= make_cleanup (VEC_cleanup (objfilep
), &new_objfiles
);
2442 /* With the addition of shared libraries, this should be modified,
2443 the load time should be saved in the partial symbol tables, since
2444 different tables may come from different source files. FIXME.
2445 This routine should then walk down each partial symbol table
2446 and see if the symbol table that it originates from has been changed. */
2448 for (objfile
= object_files
; objfile
; objfile
= objfile
->next
)
2450 /* solib-sunos.c creates one objfile with obfd. */
2451 if (objfile
->obfd
== NULL
)
2454 /* Separate debug objfiles are handled in the main objfile. */
2455 if (objfile
->separate_debug_objfile_backlink
)
2458 /* If this object is from an archive (what you usually create with
2459 `ar', often called a `static library' on most systems, though
2460 a `shared library' on AIX is also an archive), then you should
2461 stat on the archive name, not member name. */
2462 if (objfile
->obfd
->my_archive
)
2463 res
= stat (objfile
->obfd
->my_archive
->filename
, &new_statbuf
);
2465 res
= stat (objfile
->name
, &new_statbuf
);
2468 /* FIXME, should use print_sys_errmsg but it's not filtered. */
2469 printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
2473 new_modtime
= new_statbuf
.st_mtime
;
2474 if (new_modtime
!= objfile
->mtime
)
2476 struct cleanup
*old_cleanups
;
2477 struct section_offsets
*offsets
;
2479 char *obfd_filename
;
2481 printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
2484 /* There are various functions like symbol_file_add,
2485 symfile_bfd_open, syms_from_objfile, etc., which might
2486 appear to do what we want. But they have various other
2487 effects which we *don't* want. So we just do stuff
2488 ourselves. We don't worry about mapped files (for one thing,
2489 any mapped file will be out of date). */
2491 /* If we get an error, blow away this objfile (not sure if
2492 that is the correct response for things like shared
2494 old_cleanups
= make_cleanup_free_objfile (objfile
);
2495 /* We need to do this whenever any symbols go away. */
2496 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
2498 if (exec_bfd
!= NULL
2499 && filename_cmp (bfd_get_filename (objfile
->obfd
),
2500 bfd_get_filename (exec_bfd
)) == 0)
2502 /* Reload EXEC_BFD without asking anything. */
2504 exec_file_attach (bfd_get_filename (objfile
->obfd
), 0);
2507 /* Keep the calls order approx. the same as in free_objfile. */
2509 /* Free the separate debug objfiles. It will be
2510 automatically recreated by sym_read. */
2511 free_objfile_separate_debug (objfile
);
2513 /* Remove any references to this objfile in the global
2515 preserve_values (objfile
);
2517 /* Nuke all the state that we will re-read. Much of the following
2518 code which sets things to NULL really is necessary to tell
2519 other parts of GDB that there is nothing currently there.
2521 Try to keep the freeing order compatible with free_objfile. */
2523 if (objfile
->sf
!= NULL
)
2525 (*objfile
->sf
->sym_finish
) (objfile
);
2528 clear_objfile_data (objfile
);
2530 /* Clean up any state BFD has sitting around. */
2532 struct bfd
*obfd
= objfile
->obfd
;
2534 obfd_filename
= bfd_get_filename (objfile
->obfd
);
2535 /* Open the new BFD before freeing the old one, so that
2536 the filename remains live. */
2537 objfile
->obfd
= gdb_bfd_open_maybe_remote (obfd_filename
);
2538 if (objfile
->obfd
== NULL
)
2540 /* We have to make a cleanup and error here, rather
2541 than erroring later, because once we unref OBFD,
2542 OBFD_FILENAME will be freed. */
2543 make_cleanup_bfd_unref (obfd
);
2544 error (_("Can't open %s to read symbols."), obfd_filename
);
2546 gdb_bfd_unref (obfd
);
2549 objfile
->name
= bfd_get_filename (objfile
->obfd
);
2550 /* bfd_openr sets cacheable to true, which is what we want. */
2551 if (!bfd_check_format (objfile
->obfd
, bfd_object
))
2552 error (_("Can't read symbols from %s: %s."), objfile
->name
,
2553 bfd_errmsg (bfd_get_error ()));
2555 /* Save the offsets, we will nuke them with the rest of the
2557 num_offsets
= objfile
->num_sections
;
2558 offsets
= ((struct section_offsets
*)
2559 alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets
)));
2560 memcpy (offsets
, objfile
->section_offsets
,
2561 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2563 /* FIXME: Do we have to free a whole linked list, or is this
2565 if (objfile
->global_psymbols
.list
)
2566 xfree (objfile
->global_psymbols
.list
);
2567 memset (&objfile
->global_psymbols
, 0,
2568 sizeof (objfile
->global_psymbols
));
2569 if (objfile
->static_psymbols
.list
)
2570 xfree (objfile
->static_psymbols
.list
);
2571 memset (&objfile
->static_psymbols
, 0,
2572 sizeof (objfile
->static_psymbols
));
2574 /* Free the obstacks for non-reusable objfiles. */
2575 psymbol_bcache_free (objfile
->psymbol_cache
);
2576 objfile
->psymbol_cache
= psymbol_bcache_init ();
2577 if (objfile
->demangled_names_hash
!= NULL
)
2579 htab_delete (objfile
->demangled_names_hash
);
2580 objfile
->demangled_names_hash
= NULL
;
2582 obstack_free (&objfile
->objfile_obstack
, 0);
2583 objfile
->sections
= NULL
;
2584 objfile
->symtabs
= NULL
;
2585 objfile
->psymtabs
= NULL
;
2586 objfile
->psymtabs_addrmap
= NULL
;
2587 objfile
->free_psymtabs
= NULL
;
2588 objfile
->template_symbols
= NULL
;
2589 objfile
->msymbols
= NULL
;
2590 objfile
->minimal_symbol_count
= 0;
2591 memset (&objfile
->msymbol_hash
, 0,
2592 sizeof (objfile
->msymbol_hash
));
2593 memset (&objfile
->msymbol_demangled_hash
, 0,
2594 sizeof (objfile
->msymbol_demangled_hash
));
2596 set_objfile_per_bfd (objfile
);
2598 /* obstack_init also initializes the obstack so it is
2599 empty. We could use obstack_specify_allocation but
2600 gdb_obstack.h specifies the alloc/dealloc functions. */
2601 obstack_init (&objfile
->objfile_obstack
);
2602 build_objfile_section_table (objfile
);
2603 terminate_minimal_symbol_table (objfile
);
2605 /* We use the same section offsets as from last time. I'm not
2606 sure whether that is always correct for shared libraries. */
2607 objfile
->section_offsets
= (struct section_offsets
*)
2608 obstack_alloc (&objfile
->objfile_obstack
,
2609 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2610 memcpy (objfile
->section_offsets
, offsets
,
2611 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2612 objfile
->num_sections
= num_offsets
;
2614 /* What the hell is sym_new_init for, anyway? The concept of
2615 distinguishing between the main file and additional files
2616 in this way seems rather dubious. */
2617 if (objfile
== symfile_objfile
)
2619 (*objfile
->sf
->sym_new_init
) (objfile
);
2622 (*objfile
->sf
->sym_init
) (objfile
);
2623 clear_complaints (&symfile_complaints
, 1, 1);
2625 objfile
->flags
&= ~OBJF_PSYMTABS_READ
;
2626 read_symbols (objfile
, 0);
2628 if (!objfile_has_symbols (objfile
))
2631 printf_unfiltered (_("(no debugging symbols found)\n"));
2635 /* We're done reading the symbol file; finish off complaints. */
2636 clear_complaints (&symfile_complaints
, 0, 1);
2638 /* Getting new symbols may change our opinion about what is
2641 reinit_frame_cache ();
2643 /* Discard cleanups as symbol reading was successful. */
2644 discard_cleanups (old_cleanups
);
2646 /* If the mtime has changed between the time we set new_modtime
2647 and now, we *want* this to be out of date, so don't call stat
2649 objfile
->mtime
= new_modtime
;
2650 init_entry_point_info (objfile
);
2652 VEC_safe_push (objfilep
, new_objfiles
, objfile
);
2660 /* Notify objfiles that we've modified objfile sections. */
2661 objfiles_changed ();
2663 clear_symtab_users (0);
2665 /* clear_objfile_data for each objfile was called before freeing it and
2666 observer_notify_new_objfile (NULL) has been called by
2667 clear_symtab_users above. Notify the new files now. */
2668 for (ix
= 0; VEC_iterate (objfilep
, new_objfiles
, ix
, objfile
); ix
++)
2669 observer_notify_new_objfile (objfile
);
2671 /* At least one objfile has changed, so we can consider that
2672 the executable we're debugging has changed too. */
2673 observer_notify_executable_changed ();
2676 do_cleanups (all_cleanups
);
2688 static filename_language
*filename_language_table
;
2689 static int fl_table_size
, fl_table_next
;
2692 add_filename_language (char *ext
, enum language lang
)
2694 if (fl_table_next
>= fl_table_size
)
2696 fl_table_size
+= 10;
2697 filename_language_table
=
2698 xrealloc (filename_language_table
,
2699 fl_table_size
* sizeof (*filename_language_table
));
2702 filename_language_table
[fl_table_next
].ext
= xstrdup (ext
);
2703 filename_language_table
[fl_table_next
].lang
= lang
;
2707 static char *ext_args
;
2709 show_ext_args (struct ui_file
*file
, int from_tty
,
2710 struct cmd_list_element
*c
, const char *value
)
2712 fprintf_filtered (file
,
2713 _("Mapping between filename extension "
2714 "and source language is \"%s\".\n"),
2719 set_ext_lang_command (char *args
, int from_tty
, struct cmd_list_element
*e
)
2722 char *cp
= ext_args
;
2725 /* First arg is filename extension, starting with '.' */
2727 error (_("'%s': Filename extension must begin with '.'"), ext_args
);
2729 /* Find end of first arg. */
2730 while (*cp
&& !isspace (*cp
))
2734 error (_("'%s': two arguments required -- "
2735 "filename extension and language"),
2738 /* Null-terminate first arg. */
2741 /* Find beginning of second arg, which should be a source language. */
2742 cp
= skip_spaces (cp
);
2745 error (_("'%s': two arguments required -- "
2746 "filename extension and language"),
2749 /* Lookup the language from among those we know. */
2750 lang
= language_enum (cp
);
2752 /* Now lookup the filename extension: do we already know it? */
2753 for (i
= 0; i
< fl_table_next
; i
++)
2754 if (0 == strcmp (ext_args
, filename_language_table
[i
].ext
))
2757 if (i
>= fl_table_next
)
2759 /* New file extension. */
2760 add_filename_language (ext_args
, lang
);
2764 /* Redefining a previously known filename extension. */
2767 /* query ("Really make files of type %s '%s'?", */
2768 /* ext_args, language_str (lang)); */
2770 xfree (filename_language_table
[i
].ext
);
2771 filename_language_table
[i
].ext
= xstrdup (ext_args
);
2772 filename_language_table
[i
].lang
= lang
;
2777 info_ext_lang_command (char *args
, int from_tty
)
2781 printf_filtered (_("Filename extensions and the languages they represent:"));
2782 printf_filtered ("\n\n");
2783 for (i
= 0; i
< fl_table_next
; i
++)
2784 printf_filtered ("\t%s\t- %s\n",
2785 filename_language_table
[i
].ext
,
2786 language_str (filename_language_table
[i
].lang
));
2790 init_filename_language_table (void)
2792 if (fl_table_size
== 0) /* Protect against repetition. */
2796 filename_language_table
=
2797 xmalloc (fl_table_size
* sizeof (*filename_language_table
));
2798 add_filename_language (".c", language_c
);
2799 add_filename_language (".d", language_d
);
2800 add_filename_language (".C", language_cplus
);
2801 add_filename_language (".cc", language_cplus
);
2802 add_filename_language (".cp", language_cplus
);
2803 add_filename_language (".cpp", language_cplus
);
2804 add_filename_language (".cxx", language_cplus
);
2805 add_filename_language (".c++", language_cplus
);
2806 add_filename_language (".java", language_java
);
2807 add_filename_language (".class", language_java
);
2808 add_filename_language (".m", language_objc
);
2809 add_filename_language (".f", language_fortran
);
2810 add_filename_language (".F", language_fortran
);
2811 add_filename_language (".for", language_fortran
);
2812 add_filename_language (".FOR", language_fortran
);
2813 add_filename_language (".ftn", language_fortran
);
2814 add_filename_language (".FTN", language_fortran
);
2815 add_filename_language (".fpp", language_fortran
);
2816 add_filename_language (".FPP", language_fortran
);
2817 add_filename_language (".f90", language_fortran
);
2818 add_filename_language (".F90", language_fortran
);
2819 add_filename_language (".f95", language_fortran
);
2820 add_filename_language (".F95", language_fortran
);
2821 add_filename_language (".f03", language_fortran
);
2822 add_filename_language (".F03", language_fortran
);
2823 add_filename_language (".f08", language_fortran
);
2824 add_filename_language (".F08", language_fortran
);
2825 add_filename_language (".s", language_asm
);
2826 add_filename_language (".sx", language_asm
);
2827 add_filename_language (".S", language_asm
);
2828 add_filename_language (".pas", language_pascal
);
2829 add_filename_language (".p", language_pascal
);
2830 add_filename_language (".pp", language_pascal
);
2831 add_filename_language (".adb", language_ada
);
2832 add_filename_language (".ads", language_ada
);
2833 add_filename_language (".a", language_ada
);
2834 add_filename_language (".ada", language_ada
);
2835 add_filename_language (".dg", language_ada
);
2840 deduce_language_from_filename (const char *filename
)
2845 if (filename
!= NULL
)
2846 if ((cp
= strrchr (filename
, '.')) != NULL
)
2847 for (i
= 0; i
< fl_table_next
; i
++)
2848 if (strcmp (cp
, filename_language_table
[i
].ext
) == 0)
2849 return filename_language_table
[i
].lang
;
2851 return language_unknown
;
2856 Allocate and partly initialize a new symbol table. Return a pointer
2857 to it. error() if no space.
2859 Caller must set these fields:
2868 allocate_symtab (const char *filename
, struct objfile
*objfile
)
2870 struct symtab
*symtab
;
2872 symtab
= (struct symtab
*)
2873 obstack_alloc (&objfile
->objfile_obstack
, sizeof (struct symtab
));
2874 memset (symtab
, 0, sizeof (*symtab
));
2875 symtab
->filename
= (char *) bcache (filename
, strlen (filename
) + 1,
2876 objfile
->per_bfd
->filename_cache
);
2877 symtab
->fullname
= NULL
;
2878 symtab
->language
= deduce_language_from_filename (filename
);
2879 symtab
->debugformat
= "unknown";
2881 /* Hook it to the objfile it comes from. */
2883 symtab
->objfile
= objfile
;
2884 symtab
->next
= objfile
->symtabs
;
2885 objfile
->symtabs
= symtab
;
2887 if (symtab_create_debug
)
2889 /* Be a bit clever with debugging messages, and don't print objfile
2890 every time, only when it changes. */
2891 static char *last_objfile_name
= NULL
;
2893 if (last_objfile_name
== NULL
2894 || strcmp (last_objfile_name
, objfile
->name
) != 0)
2896 xfree (last_objfile_name
);
2897 last_objfile_name
= xstrdup (objfile
->name
);
2898 fprintf_unfiltered (gdb_stdlog
,
2899 "Creating one or more symtabs for objfile %s ...\n",
2902 fprintf_unfiltered (gdb_stdlog
,
2903 "Created symtab %s for module %s.\n",
2904 host_address_to_string (symtab
), filename
);
2911 /* Reset all data structures in gdb which may contain references to symbol
2912 table data. ADD_FLAGS is a bitmask of enum symfile_add_flags. */
2915 clear_symtab_users (int add_flags
)
2917 /* Someday, we should do better than this, by only blowing away
2918 the things that really need to be blown. */
2920 /* Clear the "current" symtab first, because it is no longer valid.
2921 breakpoint_re_set may try to access the current symtab. */
2922 clear_current_source_symtab_and_line ();
2925 if ((add_flags
& SYMFILE_DEFER_BP_RESET
) == 0)
2926 breakpoint_re_set ();
2927 clear_last_displayed_sal ();
2928 clear_pc_function_cache ();
2929 observer_notify_new_objfile (NULL
);
2931 /* Clear globals which might have pointed into a removed objfile.
2932 FIXME: It's not clear which of these are supposed to persist
2933 between expressions and which ought to be reset each time. */
2934 expression_context_block
= NULL
;
2935 innermost_block
= NULL
;
2937 /* Varobj may refer to old symbols, perform a cleanup. */
2938 varobj_invalidate ();
2943 clear_symtab_users_cleanup (void *ignore
)
2945 clear_symtab_users (0);
2949 The following code implements an abstraction for debugging overlay sections.
2951 The target model is as follows:
2952 1) The gnu linker will permit multiple sections to be mapped into the
2953 same VMA, each with its own unique LMA (or load address).
2954 2) It is assumed that some runtime mechanism exists for mapping the
2955 sections, one by one, from the load address into the VMA address.
2956 3) This code provides a mechanism for gdb to keep track of which
2957 sections should be considered to be mapped from the VMA to the LMA.
2958 This information is used for symbol lookup, and memory read/write.
2959 For instance, if a section has been mapped then its contents
2960 should be read from the VMA, otherwise from the LMA.
2962 Two levels of debugger support for overlays are available. One is
2963 "manual", in which the debugger relies on the user to tell it which
2964 overlays are currently mapped. This level of support is
2965 implemented entirely in the core debugger, and the information about
2966 whether a section is mapped is kept in the objfile->obj_section table.
2968 The second level of support is "automatic", and is only available if
2969 the target-specific code provides functionality to read the target's
2970 overlay mapping table, and translate its contents for the debugger
2971 (by updating the mapped state information in the obj_section tables).
2973 The interface is as follows:
2975 overlay map <name> -- tell gdb to consider this section mapped
2976 overlay unmap <name> -- tell gdb to consider this section unmapped
2977 overlay list -- list the sections that GDB thinks are mapped
2978 overlay read-target -- get the target's state of what's mapped
2979 overlay off/manual/auto -- set overlay debugging state
2980 Functional interface:
2981 find_pc_mapped_section(pc): if the pc is in the range of a mapped
2982 section, return that section.
2983 find_pc_overlay(pc): find any overlay section that contains
2984 the pc, either in its VMA or its LMA
2985 section_is_mapped(sect): true if overlay is marked as mapped
2986 section_is_overlay(sect): true if section's VMA != LMA
2987 pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
2988 pc_in_unmapped_range(...): true if pc belongs to section's LMA
2989 sections_overlap(sec1, sec2): true if mapped sec1 and sec2 ranges overlap
2990 overlay_mapped_address(...): map an address from section's LMA to VMA
2991 overlay_unmapped_address(...): map an address from section's VMA to LMA
2992 symbol_overlayed_address(...): Return a "current" address for symbol:
2993 either in VMA or LMA depending on whether
2994 the symbol's section is currently mapped. */
2996 /* Overlay debugging state: */
2998 enum overlay_debugging_state overlay_debugging
= ovly_off
;
2999 int overlay_cache_invalid
= 0; /* True if need to refresh mapped state. */
3001 /* Function: section_is_overlay (SECTION)
3002 Returns true if SECTION has VMA not equal to LMA, ie.
3003 SECTION is loaded at an address different from where it will "run". */
3006 section_is_overlay (struct obj_section
*section
)
3008 if (overlay_debugging
&& section
)
3010 bfd
*abfd
= section
->objfile
->obfd
;
3011 asection
*bfd_section
= section
->the_bfd_section
;
3013 if (bfd_section_lma (abfd
, bfd_section
) != 0
3014 && bfd_section_lma (abfd
, bfd_section
)
3015 != bfd_section_vma (abfd
, bfd_section
))
3022 /* Function: overlay_invalidate_all (void)
3023 Invalidate the mapped state of all overlay sections (mark it as stale). */
3026 overlay_invalidate_all (void)
3028 struct objfile
*objfile
;
3029 struct obj_section
*sect
;
3031 ALL_OBJSECTIONS (objfile
, sect
)
3032 if (section_is_overlay (sect
))
3033 sect
->ovly_mapped
= -1;
3036 /* Function: section_is_mapped (SECTION)
3037 Returns true if section is an overlay, and is currently mapped.
3039 Access to the ovly_mapped flag is restricted to this function, so
3040 that we can do automatic update. If the global flag
3041 OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
3042 overlay_invalidate_all. If the mapped state of the particular
3043 section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */
3046 section_is_mapped (struct obj_section
*osect
)
3048 struct gdbarch
*gdbarch
;
3050 if (osect
== 0 || !section_is_overlay (osect
))
3053 switch (overlay_debugging
)
3057 return 0; /* overlay debugging off */
3058 case ovly_auto
: /* overlay debugging automatic */
3059 /* Unles there is a gdbarch_overlay_update function,
3060 there's really nothing useful to do here (can't really go auto). */
3061 gdbarch
= get_objfile_arch (osect
->objfile
);
3062 if (gdbarch_overlay_update_p (gdbarch
))
3064 if (overlay_cache_invalid
)
3066 overlay_invalidate_all ();
3067 overlay_cache_invalid
= 0;
3069 if (osect
->ovly_mapped
== -1)
3070 gdbarch_overlay_update (gdbarch
, osect
);
3072 /* fall thru to manual case */
3073 case ovly_on
: /* overlay debugging manual */
3074 return osect
->ovly_mapped
== 1;
3078 /* Function: pc_in_unmapped_range
3079 If PC falls into the lma range of SECTION, return true, else false. */
3082 pc_in_unmapped_range (CORE_ADDR pc
, struct obj_section
*section
)
3084 if (section_is_overlay (section
))
3086 bfd
*abfd
= section
->objfile
->obfd
;
3087 asection
*bfd_section
= section
->the_bfd_section
;
3089 /* We assume the LMA is relocated by the same offset as the VMA. */
3090 bfd_vma size
= bfd_get_section_size (bfd_section
);
3091 CORE_ADDR offset
= obj_section_offset (section
);
3093 if (bfd_get_section_lma (abfd
, bfd_section
) + offset
<= pc
3094 && pc
< bfd_get_section_lma (abfd
, bfd_section
) + offset
+ size
)
3101 /* Function: pc_in_mapped_range
3102 If PC falls into the vma range of SECTION, return true, else false. */
3105 pc_in_mapped_range (CORE_ADDR pc
, struct obj_section
*section
)
3107 if (section_is_overlay (section
))
3109 if (obj_section_addr (section
) <= pc
3110 && pc
< obj_section_endaddr (section
))
3118 /* Return true if the mapped ranges of sections A and B overlap, false
3121 sections_overlap (struct obj_section
*a
, struct obj_section
*b
)
3123 CORE_ADDR a_start
= obj_section_addr (a
);
3124 CORE_ADDR a_end
= obj_section_endaddr (a
);
3125 CORE_ADDR b_start
= obj_section_addr (b
);
3126 CORE_ADDR b_end
= obj_section_endaddr (b
);
3128 return (a_start
< b_end
&& b_start
< a_end
);
3131 /* Function: overlay_unmapped_address (PC, SECTION)
3132 Returns the address corresponding to PC in the unmapped (load) range.
3133 May be the same as PC. */
3136 overlay_unmapped_address (CORE_ADDR pc
, struct obj_section
*section
)
3138 if (section_is_overlay (section
) && pc_in_mapped_range (pc
, section
))
3140 bfd
*abfd
= section
->objfile
->obfd
;
3141 asection
*bfd_section
= section
->the_bfd_section
;
3143 return pc
+ bfd_section_lma (abfd
, bfd_section
)
3144 - bfd_section_vma (abfd
, bfd_section
);
3150 /* Function: overlay_mapped_address (PC, SECTION)
3151 Returns the address corresponding to PC in the mapped (runtime) range.
3152 May be the same as PC. */
3155 overlay_mapped_address (CORE_ADDR pc
, struct obj_section
*section
)
3157 if (section_is_overlay (section
) && pc_in_unmapped_range (pc
, section
))
3159 bfd
*abfd
= section
->objfile
->obfd
;
3160 asection
*bfd_section
= section
->the_bfd_section
;
3162 return pc
+ bfd_section_vma (abfd
, bfd_section
)
3163 - bfd_section_lma (abfd
, bfd_section
);
3170 /* Function: symbol_overlayed_address
3171 Return one of two addresses (relative to the VMA or to the LMA),
3172 depending on whether the section is mapped or not. */
3175 symbol_overlayed_address (CORE_ADDR address
, struct obj_section
*section
)
3177 if (overlay_debugging
)
3179 /* If the symbol has no section, just return its regular address. */
3182 /* If the symbol's section is not an overlay, just return its
3184 if (!section_is_overlay (section
))
3186 /* If the symbol's section is mapped, just return its address. */
3187 if (section_is_mapped (section
))
3190 * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
3191 * then return its LOADED address rather than its vma address!!
3193 return overlay_unmapped_address (address
, section
);
3198 /* Function: find_pc_overlay (PC)
3199 Return the best-match overlay section for PC:
3200 If PC matches a mapped overlay section's VMA, return that section.
3201 Else if PC matches an unmapped section's VMA, return that section.
3202 Else if PC matches an unmapped section's LMA, return that section. */
3204 struct obj_section
*
3205 find_pc_overlay (CORE_ADDR pc
)
3207 struct objfile
*objfile
;
3208 struct obj_section
*osect
, *best_match
= NULL
;
3210 if (overlay_debugging
)
3211 ALL_OBJSECTIONS (objfile
, osect
)
3212 if (section_is_overlay (osect
))
3214 if (pc_in_mapped_range (pc
, osect
))
3216 if (section_is_mapped (osect
))
3221 else if (pc_in_unmapped_range (pc
, osect
))
3227 /* Function: find_pc_mapped_section (PC)
3228 If PC falls into the VMA address range of an overlay section that is
3229 currently marked as MAPPED, return that section. Else return NULL. */
3231 struct obj_section
*
3232 find_pc_mapped_section (CORE_ADDR pc
)
3234 struct objfile
*objfile
;
3235 struct obj_section
*osect
;
3237 if (overlay_debugging
)
3238 ALL_OBJSECTIONS (objfile
, osect
)
3239 if (pc_in_mapped_range (pc
, osect
) && section_is_mapped (osect
))
3245 /* Function: list_overlays_command
3246 Print a list of mapped sections and their PC ranges. */
3249 list_overlays_command (char *args
, int from_tty
)
3252 struct objfile
*objfile
;
3253 struct obj_section
*osect
;
3255 if (overlay_debugging
)
3256 ALL_OBJSECTIONS (objfile
, osect
)
3257 if (section_is_mapped (osect
))
3259 struct gdbarch
*gdbarch
= get_objfile_arch (objfile
);
3264 vma
= bfd_section_vma (objfile
->obfd
, osect
->the_bfd_section
);
3265 lma
= bfd_section_lma (objfile
->obfd
, osect
->the_bfd_section
);
3266 size
= bfd_get_section_size (osect
->the_bfd_section
);
3267 name
= bfd_section_name (objfile
->obfd
, osect
->the_bfd_section
);
3269 printf_filtered ("Section %s, loaded at ", name
);
3270 fputs_filtered (paddress (gdbarch
, lma
), gdb_stdout
);
3271 puts_filtered (" - ");
3272 fputs_filtered (paddress (gdbarch
, lma
+ size
), gdb_stdout
);
3273 printf_filtered (", mapped at ");
3274 fputs_filtered (paddress (gdbarch
, vma
), gdb_stdout
);
3275 puts_filtered (" - ");
3276 fputs_filtered (paddress (gdbarch
, vma
+ size
), gdb_stdout
);
3277 puts_filtered ("\n");
3282 printf_filtered (_("No sections are mapped.\n"));
3285 /* Function: map_overlay_command
3286 Mark the named section as mapped (ie. residing at its VMA address). */
3289 map_overlay_command (char *args
, int from_tty
)
3291 struct objfile
*objfile
, *objfile2
;
3292 struct obj_section
*sec
, *sec2
;
3294 if (!overlay_debugging
)
3295 error (_("Overlay debugging not enabled. Use "
3296 "either the 'overlay auto' or\n"
3297 "the 'overlay manual' command."));
3299 if (args
== 0 || *args
== 0)
3300 error (_("Argument required: name of an overlay section"));
3302 /* First, find a section matching the user supplied argument. */
3303 ALL_OBJSECTIONS (objfile
, sec
)
3304 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
3306 /* Now, check to see if the section is an overlay. */
3307 if (!section_is_overlay (sec
))
3308 continue; /* not an overlay section */
3310 /* Mark the overlay as "mapped". */
3311 sec
->ovly_mapped
= 1;
3313 /* Next, make a pass and unmap any sections that are
3314 overlapped by this new section: */
3315 ALL_OBJSECTIONS (objfile2
, sec2
)
3316 if (sec2
->ovly_mapped
&& sec
!= sec2
&& sections_overlap (sec
, sec2
))
3319 printf_unfiltered (_("Note: section %s unmapped by overlap\n"),
3320 bfd_section_name (objfile
->obfd
,
3321 sec2
->the_bfd_section
));
3322 sec2
->ovly_mapped
= 0; /* sec2 overlaps sec: unmap sec2. */
3326 error (_("No overlay section called %s"), args
);
3329 /* Function: unmap_overlay_command
3330 Mark the overlay section as unmapped
3331 (ie. resident in its LMA address range, rather than the VMA range). */
3334 unmap_overlay_command (char *args
, int from_tty
)
3336 struct objfile
*objfile
;
3337 struct obj_section
*sec
;
3339 if (!overlay_debugging
)
3340 error (_("Overlay debugging not enabled. "
3341 "Use either the 'overlay auto' or\n"
3342 "the 'overlay manual' command."));
3344 if (args
== 0 || *args
== 0)
3345 error (_("Argument required: name of an overlay section"));
3347 /* First, find a section matching the user supplied argument. */
3348 ALL_OBJSECTIONS (objfile
, sec
)
3349 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
3351 if (!sec
->ovly_mapped
)
3352 error (_("Section %s is not mapped"), args
);
3353 sec
->ovly_mapped
= 0;
3356 error (_("No overlay section called %s"), args
);
3359 /* Function: overlay_auto_command
3360 A utility command to turn on overlay debugging.
3361 Possibly this should be done via a set/show command. */
3364 overlay_auto_command (char *args
, int from_tty
)
3366 overlay_debugging
= ovly_auto
;
3367 enable_overlay_breakpoints ();
3369 printf_unfiltered (_("Automatic overlay debugging enabled."));
3372 /* Function: overlay_manual_command
3373 A utility command to turn on overlay debugging.
3374 Possibly this should be done via a set/show command. */
3377 overlay_manual_command (char *args
, int from_tty
)
3379 overlay_debugging
= ovly_on
;
3380 disable_overlay_breakpoints ();
3382 printf_unfiltered (_("Overlay debugging enabled."));
3385 /* Function: overlay_off_command
3386 A utility command to turn on overlay debugging.
3387 Possibly this should be done via a set/show command. */
3390 overlay_off_command (char *args
, int from_tty
)
3392 overlay_debugging
= ovly_off
;
3393 disable_overlay_breakpoints ();
3395 printf_unfiltered (_("Overlay debugging disabled."));
3399 overlay_load_command (char *args
, int from_tty
)
3401 struct gdbarch
*gdbarch
= get_current_arch ();
3403 if (gdbarch_overlay_update_p (gdbarch
))
3404 gdbarch_overlay_update (gdbarch
, NULL
);
3406 error (_("This target does not know how to read its overlay state."));
3409 /* Function: overlay_command
3410 A place-holder for a mis-typed command. */
3412 /* Command list chain containing all defined "overlay" subcommands. */
3413 static struct cmd_list_element
*overlaylist
;
3416 overlay_command (char *args
, int from_tty
)
3419 ("\"overlay\" must be followed by the name of an overlay command.\n");
3420 help_list (overlaylist
, "overlay ", -1, gdb_stdout
);
3424 /* Target Overlays for the "Simplest" overlay manager:
3426 This is GDB's default target overlay layer. It works with the
3427 minimal overlay manager supplied as an example by Cygnus. The
3428 entry point is via a function pointer "gdbarch_overlay_update",
3429 so targets that use a different runtime overlay manager can
3430 substitute their own overlay_update function and take over the
3433 The overlay_update function pokes around in the target's data structures
3434 to see what overlays are mapped, and updates GDB's overlay mapping with
3437 In this simple implementation, the target data structures are as follows:
3438 unsigned _novlys; /# number of overlay sections #/
3439 unsigned _ovly_table[_novlys][4] = {
3440 {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/
3441 {..., ..., ..., ...},
3443 unsigned _novly_regions; /# number of overlay regions #/
3444 unsigned _ovly_region_table[_novly_regions][3] = {
3445 {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/
3448 These functions will attempt to update GDB's mappedness state in the
3449 symbol section table, based on the target's mappedness state.
3451 To do this, we keep a cached copy of the target's _ovly_table, and
3452 attempt to detect when the cached copy is invalidated. The main
3453 entry point is "simple_overlay_update(SECT), which looks up SECT in
3454 the cached table and re-reads only the entry for that section from
3455 the target (whenever possible). */
3457 /* Cached, dynamically allocated copies of the target data structures: */
3458 static unsigned (*cache_ovly_table
)[4] = 0;
3459 static unsigned cache_novlys
= 0;
3460 static CORE_ADDR cache_ovly_table_base
= 0;
3463 VMA
, SIZE
, LMA
, MAPPED
3466 /* Throw away the cached copy of _ovly_table. */
3468 simple_free_overlay_table (void)
3470 if (cache_ovly_table
)
3471 xfree (cache_ovly_table
);
3473 cache_ovly_table
= NULL
;
3474 cache_ovly_table_base
= 0;
3477 /* Read an array of ints of size SIZE from the target into a local buffer.
3478 Convert to host order. int LEN is number of ints. */
3480 read_target_long_array (CORE_ADDR memaddr
, unsigned int *myaddr
,
3481 int len
, int size
, enum bfd_endian byte_order
)
3483 /* FIXME (alloca): Not safe if array is very large. */
3484 gdb_byte
*buf
= alloca (len
* size
);
3487 read_memory (memaddr
, buf
, len
* size
);
3488 for (i
= 0; i
< len
; i
++)
3489 myaddr
[i
] = extract_unsigned_integer (size
* i
+ buf
, size
, byte_order
);
3492 /* Find and grab a copy of the target _ovly_table
3493 (and _novlys, which is needed for the table's size). */
3495 simple_read_overlay_table (void)
3497 struct minimal_symbol
*novlys_msym
, *ovly_table_msym
;
3498 struct gdbarch
*gdbarch
;
3500 enum bfd_endian byte_order
;
3502 simple_free_overlay_table ();
3503 novlys_msym
= lookup_minimal_symbol ("_novlys", NULL
, NULL
);
3506 error (_("Error reading inferior's overlay table: "
3507 "couldn't find `_novlys' variable\n"
3508 "in inferior. Use `overlay manual' mode."));
3512 ovly_table_msym
= lookup_minimal_symbol ("_ovly_table", NULL
, NULL
);
3513 if (! ovly_table_msym
)
3515 error (_("Error reading inferior's overlay table: couldn't find "
3516 "`_ovly_table' array\n"
3517 "in inferior. Use `overlay manual' mode."));
3521 gdbarch
= get_objfile_arch (msymbol_objfile (ovly_table_msym
));
3522 word_size
= gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
;
3523 byte_order
= gdbarch_byte_order (gdbarch
);
3525 cache_novlys
= read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym
),
3528 = (void *) xmalloc (cache_novlys
* sizeof (*cache_ovly_table
));
3529 cache_ovly_table_base
= SYMBOL_VALUE_ADDRESS (ovly_table_msym
);
3530 read_target_long_array (cache_ovly_table_base
,
3531 (unsigned int *) cache_ovly_table
,
3532 cache_novlys
* 4, word_size
, byte_order
);
3534 return 1; /* SUCCESS */
3537 /* Function: simple_overlay_update_1
3538 A helper function for simple_overlay_update. Assuming a cached copy
3539 of _ovly_table exists, look through it to find an entry whose vma,
3540 lma and size match those of OSECT. Re-read the entry and make sure
3541 it still matches OSECT (else the table may no longer be valid).
3542 Set OSECT's mapped state to match the entry. Return: 1 for
3543 success, 0 for failure. */
3546 simple_overlay_update_1 (struct obj_section
*osect
)
3549 bfd
*obfd
= osect
->objfile
->obfd
;
3550 asection
*bsect
= osect
->the_bfd_section
;
3551 struct gdbarch
*gdbarch
= get_objfile_arch (osect
->objfile
);
3552 int word_size
= gdbarch_long_bit (gdbarch
) / TARGET_CHAR_BIT
;
3553 enum bfd_endian byte_order
= gdbarch_byte_order (gdbarch
);
3555 size
= bfd_get_section_size (osect
->the_bfd_section
);
3556 for (i
= 0; i
< cache_novlys
; i
++)
3557 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3558 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3559 /* && cache_ovly_table[i][SIZE] == size */ )
3561 read_target_long_array (cache_ovly_table_base
+ i
* word_size
,
3562 (unsigned int *) cache_ovly_table
[i
],
3563 4, word_size
, byte_order
);
3564 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3565 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3566 /* && cache_ovly_table[i][SIZE] == size */ )
3568 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3571 else /* Warning! Warning! Target's ovly table has changed! */
3577 /* Function: simple_overlay_update
3578 If OSECT is NULL, then update all sections' mapped state
3579 (after re-reading the entire target _ovly_table).
3580 If OSECT is non-NULL, then try to find a matching entry in the
3581 cached ovly_table and update only OSECT's mapped state.
3582 If a cached entry can't be found or the cache isn't valid, then
3583 re-read the entire cache, and go ahead and update all sections. */
3586 simple_overlay_update (struct obj_section
*osect
)
3588 struct objfile
*objfile
;
3590 /* Were we given an osect to look up? NULL means do all of them. */
3592 /* Have we got a cached copy of the target's overlay table? */
3593 if (cache_ovly_table
!= NULL
)
3595 /* Does its cached location match what's currently in the
3597 struct minimal_symbol
*minsym
3598 = lookup_minimal_symbol ("_ovly_table", NULL
, NULL
);
3601 error (_("Error reading inferior's overlay table: couldn't "
3602 "find `_ovly_table' array\n"
3603 "in inferior. Use `overlay manual' mode."));
3605 if (cache_ovly_table_base
== SYMBOL_VALUE_ADDRESS (minsym
))
3606 /* Then go ahead and try to look up this single section in
3608 if (simple_overlay_update_1 (osect
))
3609 /* Found it! We're done. */
3613 /* Cached table no good: need to read the entire table anew.
3614 Or else we want all the sections, in which case it's actually
3615 more efficient to read the whole table in one block anyway. */
3617 if (! simple_read_overlay_table ())
3620 /* Now may as well update all sections, even if only one was requested. */
3621 ALL_OBJSECTIONS (objfile
, osect
)
3622 if (section_is_overlay (osect
))
3625 bfd
*obfd
= osect
->objfile
->obfd
;
3626 asection
*bsect
= osect
->the_bfd_section
;
3628 size
= bfd_get_section_size (bsect
);
3629 for (i
= 0; i
< cache_novlys
; i
++)
3630 if (cache_ovly_table
[i
][VMA
] == bfd_section_vma (obfd
, bsect
)
3631 && cache_ovly_table
[i
][LMA
] == bfd_section_lma (obfd
, bsect
)
3632 /* && cache_ovly_table[i][SIZE] == size */ )
3633 { /* obj_section matches i'th entry in ovly_table. */
3634 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3635 break; /* finished with inner for loop: break out. */
3640 /* Set the output sections and output offsets for section SECTP in
3641 ABFD. The relocation code in BFD will read these offsets, so we
3642 need to be sure they're initialized. We map each section to itself,
3643 with no offset; this means that SECTP->vma will be honored. */
3646 symfile_dummy_outputs (bfd
*abfd
, asection
*sectp
, void *dummy
)
3648 sectp
->output_section
= sectp
;
3649 sectp
->output_offset
= 0;
3652 /* Default implementation for sym_relocate. */
3656 default_symfile_relocate (struct objfile
*objfile
, asection
*sectp
,
3659 /* Use sectp->owner instead of objfile->obfd. sectp may point to a
3661 bfd
*abfd
= sectp
->owner
;
3663 /* We're only interested in sections with relocation
3665 if ((sectp
->flags
& SEC_RELOC
) == 0)
3668 /* We will handle section offsets properly elsewhere, so relocate as if
3669 all sections begin at 0. */
3670 bfd_map_over_sections (abfd
, symfile_dummy_outputs
, NULL
);
3672 return bfd_simple_get_relocated_section_contents (abfd
, sectp
, buf
, NULL
);
3675 /* Relocate the contents of a debug section SECTP in ABFD. The
3676 contents are stored in BUF if it is non-NULL, or returned in a
3677 malloc'd buffer otherwise.
3679 For some platforms and debug info formats, shared libraries contain
3680 relocations against the debug sections (particularly for DWARF-2;
3681 one affected platform is PowerPC GNU/Linux, although it depends on
3682 the version of the linker in use). Also, ELF object files naturally
3683 have unresolved relocations for their debug sections. We need to apply
3684 the relocations in order to get the locations of symbols correct.
3685 Another example that may require relocation processing, is the
3686 DWARF-2 .eh_frame section in .o files, although it isn't strictly a
3690 symfile_relocate_debug_section (struct objfile
*objfile
,
3691 asection
*sectp
, bfd_byte
*buf
)
3693 gdb_assert (objfile
->sf
->sym_relocate
);
3695 return (*objfile
->sf
->sym_relocate
) (objfile
, sectp
, buf
);
3698 struct symfile_segment_data
*
3699 get_symfile_segment_data (bfd
*abfd
)
3701 const struct sym_fns
*sf
= find_sym_fns (abfd
);
3706 return sf
->sym_segments (abfd
);
3710 free_symfile_segment_data (struct symfile_segment_data
*data
)
3712 xfree (data
->segment_bases
);
3713 xfree (data
->segment_sizes
);
3714 xfree (data
->segment_info
);
3720 - DATA, containing segment addresses from the object file ABFD, and
3721 the mapping from ABFD's sections onto the segments that own them,
3723 - SEGMENT_BASES[0 .. NUM_SEGMENT_BASES - 1], holding the actual
3724 segment addresses reported by the target,
3725 store the appropriate offsets for each section in OFFSETS.
3727 If there are fewer entries in SEGMENT_BASES than there are segments
3728 in DATA, then apply SEGMENT_BASES' last entry to all the segments.
3730 If there are more entries, then ignore the extra. The target may
3731 not be able to distinguish between an empty data segment and a
3732 missing data segment; a missing text segment is less plausible. */
3734 symfile_map_offsets_to_segments (bfd
*abfd
, struct symfile_segment_data
*data
,
3735 struct section_offsets
*offsets
,
3736 int num_segment_bases
,
3737 const CORE_ADDR
*segment_bases
)
3742 /* It doesn't make sense to call this function unless you have some
3743 segment base addresses. */
3744 gdb_assert (num_segment_bases
> 0);
3746 /* If we do not have segment mappings for the object file, we
3747 can not relocate it by segments. */
3748 gdb_assert (data
!= NULL
);
3749 gdb_assert (data
->num_segments
> 0);
3751 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
3753 int which
= data
->segment_info
[i
];
3755 gdb_assert (0 <= which
&& which
<= data
->num_segments
);
3757 /* Don't bother computing offsets for sections that aren't
3758 loaded as part of any segment. */
3762 /* Use the last SEGMENT_BASES entry as the address of any extra
3763 segments mentioned in DATA->segment_info. */
3764 if (which
> num_segment_bases
)
3765 which
= num_segment_bases
;
3767 offsets
->offsets
[i
] = (segment_bases
[which
- 1]
3768 - data
->segment_bases
[which
- 1]);
3775 symfile_find_segment_sections (struct objfile
*objfile
)
3777 bfd
*abfd
= objfile
->obfd
;
3780 struct symfile_segment_data
*data
;
3782 data
= get_symfile_segment_data (objfile
->obfd
);
3786 if (data
->num_segments
!= 1 && data
->num_segments
!= 2)
3788 free_symfile_segment_data (data
);
3792 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
3794 int which
= data
->segment_info
[i
];
3798 if (objfile
->sect_index_text
== -1)
3799 objfile
->sect_index_text
= sect
->index
;
3801 if (objfile
->sect_index_rodata
== -1)
3802 objfile
->sect_index_rodata
= sect
->index
;
3804 else if (which
== 2)
3806 if (objfile
->sect_index_data
== -1)
3807 objfile
->sect_index_data
= sect
->index
;
3809 if (objfile
->sect_index_bss
== -1)
3810 objfile
->sect_index_bss
= sect
->index
;
3814 free_symfile_segment_data (data
);
3818 _initialize_symfile (void)
3820 struct cmd_list_element
*c
;
3822 c
= add_cmd ("symbol-file", class_files
, symbol_file_command
, _("\
3823 Load symbol table from executable file FILE.\n\
3824 The `file' command can also load symbol tables, as well as setting the file\n\
3825 to execute."), &cmdlist
);
3826 set_cmd_completer (c
, filename_completer
);
3828 c
= add_cmd ("add-symbol-file", class_files
, add_symbol_file_command
, _("\
3829 Load symbols from FILE, assuming FILE has been dynamically loaded.\n\
3830 Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR>\
3831 ...]\nADDR is the starting address of the file's text.\n\
3832 The optional arguments are section-name section-address pairs and\n\
3833 should be specified if the data and bss segments are not contiguous\n\
3834 with the text. SECT is a section name to be loaded at SECT_ADDR."),
3836 set_cmd_completer (c
, filename_completer
);
3838 c
= add_cmd ("load", class_files
, load_command
, _("\
3839 Dynamically load FILE into the running program, and record its symbols\n\
3840 for access from GDB.\n\
3841 A load OFFSET may also be given."), &cmdlist
);
3842 set_cmd_completer (c
, filename_completer
);
3844 add_prefix_cmd ("overlay", class_support
, overlay_command
,
3845 _("Commands for debugging overlays."), &overlaylist
,
3846 "overlay ", 0, &cmdlist
);
3848 add_com_alias ("ovly", "overlay", class_alias
, 1);
3849 add_com_alias ("ov", "overlay", class_alias
, 1);
3851 add_cmd ("map-overlay", class_support
, map_overlay_command
,
3852 _("Assert that an overlay section is mapped."), &overlaylist
);
3854 add_cmd ("unmap-overlay", class_support
, unmap_overlay_command
,
3855 _("Assert that an overlay section is unmapped."), &overlaylist
);
3857 add_cmd ("list-overlays", class_support
, list_overlays_command
,
3858 _("List mappings of overlay sections."), &overlaylist
);
3860 add_cmd ("manual", class_support
, overlay_manual_command
,
3861 _("Enable overlay debugging."), &overlaylist
);
3862 add_cmd ("off", class_support
, overlay_off_command
,
3863 _("Disable overlay debugging."), &overlaylist
);
3864 add_cmd ("auto", class_support
, overlay_auto_command
,
3865 _("Enable automatic overlay debugging."), &overlaylist
);
3866 add_cmd ("load-target", class_support
, overlay_load_command
,
3867 _("Read the overlay mapping state from the target."), &overlaylist
);
3869 /* Filename extension to source language lookup table: */
3870 init_filename_language_table ();
3871 add_setshow_string_noescape_cmd ("extension-language", class_files
,
3873 Set mapping between filename extension and source language."), _("\
3874 Show mapping between filename extension and source language."), _("\
3875 Usage: set extension-language .foo bar"),
3876 set_ext_lang_command
,
3878 &setlist
, &showlist
);
3880 add_info ("extensions", info_ext_lang_command
,
3881 _("All filename extensions associated with a source language."));
3883 add_setshow_optional_filename_cmd ("debug-file-directory", class_support
,
3884 &debug_file_directory
, _("\
3885 Set the directories where separate debug symbols are searched for."), _("\
3886 Show the directories where separate debug symbols are searched for."), _("\
3887 Separate debug symbols are first searched for in the same\n\
3888 directory as the binary, then in the `" DEBUG_SUBDIRECTORY
"' subdirectory,\n\
3889 and lastly at the path of the directory of the binary with\n\
3890 each global debug-file-directory component prepended."),
3892 show_debug_file_directory
,
3893 &setlist
, &showlist
);