1 /* Generic symbol file reading for the GNU debugger, GDB.
3 Copyright (C) 1990-2013 Free Software Foundation, Inc.
5 Contributed by Cygnus Support, using pieces from other GDB modules.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
23 #include "arch-utils.h"
35 #include "breakpoint.h"
37 #include "complaints.h"
41 #include "filenames.h" /* for DOSish file names */
42 #include "gdb-stabs.h"
43 #include "gdb_obstack.h"
44 #include "completer.h"
47 #include "readline/readline.h"
48 #include "gdb_assert.h"
52 #include "parser-defs.h"
60 #include <sys/types.h>
62 #include "gdb_string.h"
70 int (*deprecated_ui_load_progress_hook
) (const char *section
,
72 void (*deprecated_show_load_progress
) (const char *section
,
73 unsigned long section_sent
,
74 unsigned long section_size
,
75 unsigned long total_sent
,
76 unsigned long total_size
);
77 void (*deprecated_pre_add_symbol_hook
) (const char *);
78 void (*deprecated_post_add_symbol_hook
) (void);
80 static void clear_symtab_users_cleanup (void *ignore
);
82 /* Global variables owned by this file. */
83 int readnow_symbol_files
; /* Read full symbols immediately. */
85 /* Functions this file defines. */
87 static void load_command (char *, int);
89 static void symbol_file_add_main_1 (char *args
, int from_tty
, int flags
);
91 static void add_symbol_file_command (char *, int);
93 bfd
*symfile_bfd_open (char *);
95 int get_section_index (struct objfile
*, char *);
97 static const struct sym_fns
*find_sym_fns (bfd
*);
99 static void decrement_reading_symtab (void *);
101 static void overlay_invalidate_all (void);
103 static void overlay_auto_command (char *, int);
105 static void overlay_manual_command (char *, int);
107 static void overlay_off_command (char *, int);
109 static void overlay_load_command (char *, int);
111 static void overlay_command (char *, int);
113 static void simple_free_overlay_table (void);
115 static void read_target_long_array (CORE_ADDR
, unsigned int *, int, int,
118 static int simple_read_overlay_table (void);
120 static int simple_overlay_update_1 (struct obj_section
*);
122 static void add_filename_language (char *ext
, enum language lang
);
124 static void info_ext_lang_command (char *args
, int from_tty
);
126 static void init_filename_language_table (void);
128 static void symfile_find_segment_sections (struct objfile
*objfile
);
130 void _initialize_symfile (void);
132 /* List of all available sym_fns. On gdb startup, each object file reader
133 calls add_symtab_fns() to register information on each format it is
136 typedef const struct sym_fns
*sym_fns_ptr
;
137 DEF_VEC_P (sym_fns_ptr
);
139 static VEC (sym_fns_ptr
) *symtab_fns
= NULL
;
141 /* If non-zero, shared library symbols will be added automatically
142 when the inferior is created, new libraries are loaded, or when
143 attaching to the inferior. This is almost always what users will
144 want to have happen; but for very large programs, the startup time
145 will be excessive, and so if this is a problem, the user can clear
146 this flag and then add the shared library symbols as needed. Note
147 that there is a potential for confusion, since if the shared
148 library symbols are not loaded, commands like "info fun" will *not*
149 report all the functions that are actually present. */
151 int auto_solib_add
= 1;
154 /* True if we are reading a symbol table. */
156 int currently_reading_symtab
= 0;
159 decrement_reading_symtab (void *dummy
)
161 currently_reading_symtab
--;
164 /* Increment currently_reading_symtab and return a cleanup that can be
165 used to decrement it. */
167 increment_reading_symtab (void)
169 ++currently_reading_symtab
;
170 return make_cleanup (decrement_reading_symtab
, NULL
);
173 /* Remember the lowest-addressed loadable section we've seen.
174 This function is called via bfd_map_over_sections.
176 In case of equal vmas, the section with the largest size becomes the
177 lowest-addressed loadable section.
179 If the vmas and sizes are equal, the last section is considered the
180 lowest-addressed loadable section. */
183 find_lowest_section (bfd
*abfd
, asection
*sect
, void *obj
)
185 asection
**lowest
= (asection
**) obj
;
187 if (0 == (bfd_get_section_flags (abfd
, sect
) & (SEC_ALLOC
| SEC_LOAD
)))
190 *lowest
= sect
; /* First loadable section */
191 else if (bfd_section_vma (abfd
, *lowest
) > bfd_section_vma (abfd
, sect
))
192 *lowest
= sect
; /* A lower loadable section */
193 else if (bfd_section_vma (abfd
, *lowest
) == bfd_section_vma (abfd
, sect
)
194 && (bfd_section_size (abfd
, (*lowest
))
195 <= bfd_section_size (abfd
, sect
)))
199 /* Create a new section_addr_info, with room for NUM_SECTIONS. */
201 struct section_addr_info
*
202 alloc_section_addr_info (size_t num_sections
)
204 struct section_addr_info
*sap
;
207 size
= (sizeof (struct section_addr_info
)
208 + sizeof (struct other_sections
) * (num_sections
- 1));
209 sap
= (struct section_addr_info
*) xmalloc (size
);
210 memset (sap
, 0, size
);
211 sap
->num_sections
= num_sections
;
216 /* Build (allocate and populate) a section_addr_info struct from
217 an existing section table. */
219 extern struct section_addr_info
*
220 build_section_addr_info_from_section_table (const struct target_section
*start
,
221 const struct target_section
*end
)
223 struct section_addr_info
*sap
;
224 const struct target_section
*stp
;
227 sap
= alloc_section_addr_info (end
- start
);
229 for (stp
= start
, oidx
= 0; stp
!= end
; stp
++)
231 if (bfd_get_section_flags (stp
->bfd
,
232 stp
->the_bfd_section
) & (SEC_ALLOC
| SEC_LOAD
)
233 && oidx
< end
- start
)
235 sap
->other
[oidx
].addr
= stp
->addr
;
236 sap
->other
[oidx
].name
237 = xstrdup (bfd_section_name (stp
->bfd
, stp
->the_bfd_section
));
238 sap
->other
[oidx
].sectindex
= stp
->the_bfd_section
->index
;
246 /* Create a section_addr_info from section offsets in ABFD. */
248 static struct section_addr_info
*
249 build_section_addr_info_from_bfd (bfd
*abfd
)
251 struct section_addr_info
*sap
;
253 struct bfd_section
*sec
;
255 sap
= alloc_section_addr_info (bfd_count_sections (abfd
));
256 for (i
= 0, sec
= abfd
->sections
; sec
!= NULL
; sec
= sec
->next
)
257 if (bfd_get_section_flags (abfd
, sec
) & (SEC_ALLOC
| SEC_LOAD
))
259 sap
->other
[i
].addr
= bfd_get_section_vma (abfd
, sec
);
260 sap
->other
[i
].name
= xstrdup (bfd_get_section_name (abfd
, sec
));
261 sap
->other
[i
].sectindex
= sec
->index
;
267 /* Create a section_addr_info from section offsets in OBJFILE. */
269 struct section_addr_info
*
270 build_section_addr_info_from_objfile (const struct objfile
*objfile
)
272 struct section_addr_info
*sap
;
275 /* Before reread_symbols gets rewritten it is not safe to call:
276 gdb_assert (objfile->num_sections == bfd_count_sections (objfile->obfd));
278 sap
= build_section_addr_info_from_bfd (objfile
->obfd
);
279 for (i
= 0; i
< sap
->num_sections
&& sap
->other
[i
].name
; i
++)
281 int sectindex
= sap
->other
[i
].sectindex
;
283 sap
->other
[i
].addr
+= objfile
->section_offsets
->offsets
[sectindex
];
288 /* Free all memory allocated by build_section_addr_info_from_section_table. */
291 free_section_addr_info (struct section_addr_info
*sap
)
295 for (idx
= 0; idx
< sap
->num_sections
; idx
++)
296 if (sap
->other
[idx
].name
)
297 xfree (sap
->other
[idx
].name
);
302 /* Initialize OBJFILE's sect_index_* members. */
304 init_objfile_sect_indices (struct objfile
*objfile
)
309 sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
311 objfile
->sect_index_text
= sect
->index
;
313 sect
= bfd_get_section_by_name (objfile
->obfd
, ".data");
315 objfile
->sect_index_data
= sect
->index
;
317 sect
= bfd_get_section_by_name (objfile
->obfd
, ".bss");
319 objfile
->sect_index_bss
= sect
->index
;
321 sect
= bfd_get_section_by_name (objfile
->obfd
, ".rodata");
323 objfile
->sect_index_rodata
= sect
->index
;
325 /* This is where things get really weird... We MUST have valid
326 indices for the various sect_index_* members or gdb will abort.
327 So if for example, there is no ".text" section, we have to
328 accomodate that. First, check for a file with the standard
329 one or two segments. */
331 symfile_find_segment_sections (objfile
);
333 /* Except when explicitly adding symbol files at some address,
334 section_offsets contains nothing but zeros, so it doesn't matter
335 which slot in section_offsets the individual sect_index_* members
336 index into. So if they are all zero, it is safe to just point
337 all the currently uninitialized indices to the first slot. But
338 beware: if this is the main executable, it may be relocated
339 later, e.g. by the remote qOffsets packet, and then this will
340 be wrong! That's why we try segments first. */
342 for (i
= 0; i
< objfile
->num_sections
; i
++)
344 if (ANOFFSET (objfile
->section_offsets
, i
) != 0)
349 if (i
== objfile
->num_sections
)
351 if (objfile
->sect_index_text
== -1)
352 objfile
->sect_index_text
= 0;
353 if (objfile
->sect_index_data
== -1)
354 objfile
->sect_index_data
= 0;
355 if (objfile
->sect_index_bss
== -1)
356 objfile
->sect_index_bss
= 0;
357 if (objfile
->sect_index_rodata
== -1)
358 objfile
->sect_index_rodata
= 0;
362 /* The arguments to place_section. */
364 struct place_section_arg
366 struct section_offsets
*offsets
;
370 /* Find a unique offset to use for loadable section SECT if
371 the user did not provide an offset. */
374 place_section (bfd
*abfd
, asection
*sect
, void *obj
)
376 struct place_section_arg
*arg
= obj
;
377 CORE_ADDR
*offsets
= arg
->offsets
->offsets
, start_addr
;
379 ULONGEST align
= ((ULONGEST
) 1) << bfd_get_section_alignment (abfd
, sect
);
381 /* We are only interested in allocated sections. */
382 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
385 /* If the user specified an offset, honor it. */
386 if (offsets
[sect
->index
] != 0)
389 /* Otherwise, let's try to find a place for the section. */
390 start_addr
= (arg
->lowest
+ align
- 1) & -align
;
397 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
399 int indx
= cur_sec
->index
;
401 /* We don't need to compare against ourself. */
405 /* We can only conflict with allocated sections. */
406 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
409 /* If the section offset is 0, either the section has not been placed
410 yet, or it was the lowest section placed (in which case LOWEST
411 will be past its end). */
412 if (offsets
[indx
] == 0)
415 /* If this section would overlap us, then we must move up. */
416 if (start_addr
+ bfd_get_section_size (sect
) > offsets
[indx
]
417 && start_addr
< offsets
[indx
] + bfd_get_section_size (cur_sec
))
419 start_addr
= offsets
[indx
] + bfd_get_section_size (cur_sec
);
420 start_addr
= (start_addr
+ align
- 1) & -align
;
425 /* Otherwise, we appear to be OK. So far. */
430 offsets
[sect
->index
] = start_addr
;
431 arg
->lowest
= start_addr
+ bfd_get_section_size (sect
);
434 /* Store struct section_addr_info as prepared (made relative and with SECTINDEX
435 filled-in) by addr_info_make_relative into SECTION_OFFSETS of NUM_SECTIONS
439 relative_addr_info_to_section_offsets (struct section_offsets
*section_offsets
,
441 struct section_addr_info
*addrs
)
445 memset (section_offsets
, 0, SIZEOF_N_SECTION_OFFSETS (num_sections
));
447 /* Now calculate offsets for section that were specified by the caller. */
448 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
450 struct other_sections
*osp
;
452 osp
= &addrs
->other
[i
];
453 if (osp
->sectindex
== -1)
456 /* Record all sections in offsets. */
457 /* The section_offsets in the objfile are here filled in using
459 section_offsets
->offsets
[osp
->sectindex
] = osp
->addr
;
463 /* Transform section name S for a name comparison. prelink can split section
464 `.bss' into two sections `.dynbss' and `.bss' (in this order). Similarly
465 prelink can split `.sbss' into `.sdynbss' and `.sbss'. Use virtual address
466 of the new `.dynbss' (`.sdynbss') section as the adjacent new `.bss'
467 (`.sbss') section has invalid (increased) virtual address. */
470 addr_section_name (const char *s
)
472 if (strcmp (s
, ".dynbss") == 0)
474 if (strcmp (s
, ".sdynbss") == 0)
480 /* qsort comparator for addrs_section_sort. Sort entries in ascending order by
481 their (name, sectindex) pair. sectindex makes the sort by name stable. */
484 addrs_section_compar (const void *ap
, const void *bp
)
486 const struct other_sections
*a
= *((struct other_sections
**) ap
);
487 const struct other_sections
*b
= *((struct other_sections
**) bp
);
490 retval
= strcmp (addr_section_name (a
->name
), addr_section_name (b
->name
));
494 return a
->sectindex
- b
->sectindex
;
497 /* Provide sorted array of pointers to sections of ADDRS. The array is
498 terminated by NULL. Caller is responsible to call xfree for it. */
500 static struct other_sections
**
501 addrs_section_sort (struct section_addr_info
*addrs
)
503 struct other_sections
**array
;
506 /* `+ 1' for the NULL terminator. */
507 array
= xmalloc (sizeof (*array
) * (addrs
->num_sections
+ 1));
508 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
509 array
[i
] = &addrs
->other
[i
];
512 qsort (array
, i
, sizeof (*array
), addrs_section_compar
);
517 /* Relativize absolute addresses in ADDRS into offsets based on ABFD. Fill-in
518 also SECTINDEXes specific to ABFD there. This function can be used to
519 rebase ADDRS to start referencing different BFD than before. */
522 addr_info_make_relative (struct section_addr_info
*addrs
, bfd
*abfd
)
524 asection
*lower_sect
;
525 CORE_ADDR lower_offset
;
527 struct cleanup
*my_cleanup
;
528 struct section_addr_info
*abfd_addrs
;
529 struct other_sections
**addrs_sorted
, **abfd_addrs_sorted
;
530 struct other_sections
**addrs_to_abfd_addrs
;
532 /* Find lowest loadable section to be used as starting point for
533 continguous sections. */
535 bfd_map_over_sections (abfd
, find_lowest_section
, &lower_sect
);
536 if (lower_sect
== NULL
)
538 warning (_("no loadable sections found in added symbol-file %s"),
539 bfd_get_filename (abfd
));
543 lower_offset
= bfd_section_vma (bfd_get_filename (abfd
), lower_sect
);
545 /* Create ADDRS_TO_ABFD_ADDRS array to map the sections in ADDRS to sections
546 in ABFD. Section names are not unique - there can be multiple sections of
547 the same name. Also the sections of the same name do not have to be
548 adjacent to each other. Some sections may be present only in one of the
549 files. Even sections present in both files do not have to be in the same
552 Use stable sort by name for the sections in both files. Then linearly
553 scan both lists matching as most of the entries as possible. */
555 addrs_sorted
= addrs_section_sort (addrs
);
556 my_cleanup
= make_cleanup (xfree
, addrs_sorted
);
558 abfd_addrs
= build_section_addr_info_from_bfd (abfd
);
559 make_cleanup_free_section_addr_info (abfd_addrs
);
560 abfd_addrs_sorted
= addrs_section_sort (abfd_addrs
);
561 make_cleanup (xfree
, abfd_addrs_sorted
);
563 /* Now create ADDRS_TO_ABFD_ADDRS from ADDRS_SORTED and
564 ABFD_ADDRS_SORTED. */
566 addrs_to_abfd_addrs
= xzalloc (sizeof (*addrs_to_abfd_addrs
)
567 * addrs
->num_sections
);
568 make_cleanup (xfree
, addrs_to_abfd_addrs
);
570 while (*addrs_sorted
)
572 const char *sect_name
= addr_section_name ((*addrs_sorted
)->name
);
574 while (*abfd_addrs_sorted
575 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
579 if (*abfd_addrs_sorted
580 && strcmp (addr_section_name ((*abfd_addrs_sorted
)->name
),
585 /* Make the found item directly addressable from ADDRS. */
586 index_in_addrs
= *addrs_sorted
- addrs
->other
;
587 gdb_assert (addrs_to_abfd_addrs
[index_in_addrs
] == NULL
);
588 addrs_to_abfd_addrs
[index_in_addrs
] = *abfd_addrs_sorted
;
590 /* Never use the same ABFD entry twice. */
597 /* Calculate offsets for the loadable sections.
598 FIXME! Sections must be in order of increasing loadable section
599 so that contiguous sections can use the lower-offset!!!
601 Adjust offsets if the segments are not contiguous.
602 If the section is contiguous, its offset should be set to
603 the offset of the highest loadable section lower than it
604 (the loadable section directly below it in memory).
605 this_offset = lower_offset = lower_addr - lower_orig_addr */
607 for (i
= 0; i
< addrs
->num_sections
&& addrs
->other
[i
].name
; i
++)
609 struct other_sections
*sect
= addrs_to_abfd_addrs
[i
];
613 /* This is the index used by BFD. */
614 addrs
->other
[i
].sectindex
= sect
->sectindex
;
616 if (addrs
->other
[i
].addr
!= 0)
618 addrs
->other
[i
].addr
-= sect
->addr
;
619 lower_offset
= addrs
->other
[i
].addr
;
622 addrs
->other
[i
].addr
= lower_offset
;
626 /* addr_section_name transformation is not used for SECT_NAME. */
627 const char *sect_name
= addrs
->other
[i
].name
;
629 /* This section does not exist in ABFD, which is normally
630 unexpected and we want to issue a warning.
632 However, the ELF prelinker does create a few sections which are
633 marked in the main executable as loadable (they are loaded in
634 memory from the DYNAMIC segment) and yet are not present in
635 separate debug info files. This is fine, and should not cause
636 a warning. Shared libraries contain just the section
637 ".gnu.liblist" but it is not marked as loadable there. There is
638 no other way to identify them than by their name as the sections
639 created by prelink have no special flags.
641 For the sections `.bss' and `.sbss' see addr_section_name. */
643 if (!(strcmp (sect_name
, ".gnu.liblist") == 0
644 || strcmp (sect_name
, ".gnu.conflict") == 0
645 || (strcmp (sect_name
, ".bss") == 0
647 && strcmp (addrs
->other
[i
- 1].name
, ".dynbss") == 0
648 && addrs_to_abfd_addrs
[i
- 1] != NULL
)
649 || (strcmp (sect_name
, ".sbss") == 0
651 && strcmp (addrs
->other
[i
- 1].name
, ".sdynbss") == 0
652 && addrs_to_abfd_addrs
[i
- 1] != NULL
)))
653 warning (_("section %s not found in %s"), sect_name
,
654 bfd_get_filename (abfd
));
656 addrs
->other
[i
].addr
= 0;
657 addrs
->other
[i
].sectindex
= -1;
661 do_cleanups (my_cleanup
);
664 /* Parse the user's idea of an offset for dynamic linking, into our idea
665 of how to represent it for fast symbol reading. This is the default
666 version of the sym_fns.sym_offsets function for symbol readers that
667 don't need to do anything special. It allocates a section_offsets table
668 for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
671 default_symfile_offsets (struct objfile
*objfile
,
672 struct section_addr_info
*addrs
)
674 objfile
->num_sections
= bfd_count_sections (objfile
->obfd
);
675 objfile
->section_offsets
= (struct section_offsets
*)
676 obstack_alloc (&objfile
->objfile_obstack
,
677 SIZEOF_N_SECTION_OFFSETS (objfile
->num_sections
));
678 relative_addr_info_to_section_offsets (objfile
->section_offsets
,
679 objfile
->num_sections
, addrs
);
681 /* For relocatable files, all loadable sections will start at zero.
682 The zero is meaningless, so try to pick arbitrary addresses such
683 that no loadable sections overlap. This algorithm is quadratic,
684 but the number of sections in a single object file is generally
686 if ((bfd_get_file_flags (objfile
->obfd
) & (EXEC_P
| DYNAMIC
)) == 0)
688 struct place_section_arg arg
;
689 bfd
*abfd
= objfile
->obfd
;
692 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
; cur_sec
= cur_sec
->next
)
693 /* We do not expect this to happen; just skip this step if the
694 relocatable file has a section with an assigned VMA. */
695 if (bfd_section_vma (abfd
, cur_sec
) != 0)
700 CORE_ADDR
*offsets
= objfile
->section_offsets
->offsets
;
702 /* Pick non-overlapping offsets for sections the user did not
704 arg
.offsets
= objfile
->section_offsets
;
706 bfd_map_over_sections (objfile
->obfd
, place_section
, &arg
);
708 /* Correctly filling in the section offsets is not quite
709 enough. Relocatable files have two properties that
710 (most) shared objects do not:
712 - Their debug information will contain relocations. Some
713 shared libraries do also, but many do not, so this can not
716 - If there are multiple code sections they will be loaded
717 at different relative addresses in memory than they are
718 in the objfile, since all sections in the file will start
721 Because GDB has very limited ability to map from an
722 address in debug info to the correct code section,
723 it relies on adding SECT_OFF_TEXT to things which might be
724 code. If we clear all the section offsets, and set the
725 section VMAs instead, then symfile_relocate_debug_section
726 will return meaningful debug information pointing at the
729 GDB has too many different data structures for section
730 addresses - a bfd, objfile, and so_list all have section
731 tables, as does exec_ops. Some of these could probably
734 for (cur_sec
= abfd
->sections
; cur_sec
!= NULL
;
735 cur_sec
= cur_sec
->next
)
737 if ((bfd_get_section_flags (abfd
, cur_sec
) & SEC_ALLOC
) == 0)
740 bfd_set_section_vma (abfd
, cur_sec
, offsets
[cur_sec
->index
]);
741 exec_set_section_address (bfd_get_filename (abfd
),
743 offsets
[cur_sec
->index
]);
744 offsets
[cur_sec
->index
] = 0;
749 /* Remember the bfd indexes for the .text, .data, .bss and
751 init_objfile_sect_indices (objfile
);
755 /* Divide the file into segments, which are individual relocatable units.
756 This is the default version of the sym_fns.sym_segments function for
757 symbol readers that do not have an explicit representation of segments.
758 It assumes that object files do not have segments, and fully linked
759 files have a single segment. */
761 struct symfile_segment_data
*
762 default_symfile_segments (bfd
*abfd
)
766 struct symfile_segment_data
*data
;
769 /* Relocatable files contain enough information to position each
770 loadable section independently; they should not be relocated
772 if ((bfd_get_file_flags (abfd
) & (EXEC_P
| DYNAMIC
)) == 0)
775 /* Make sure there is at least one loadable section in the file. */
776 for (sect
= abfd
->sections
; sect
!= NULL
; sect
= sect
->next
)
778 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
786 low
= bfd_get_section_vma (abfd
, sect
);
787 high
= low
+ bfd_get_section_size (sect
);
789 data
= XZALLOC (struct symfile_segment_data
);
790 data
->num_segments
= 1;
791 data
->segment_bases
= XCALLOC (1, CORE_ADDR
);
792 data
->segment_sizes
= XCALLOC (1, CORE_ADDR
);
794 num_sections
= bfd_count_sections (abfd
);
795 data
->segment_info
= XCALLOC (num_sections
, int);
797 for (i
= 0, sect
= abfd
->sections
; sect
!= NULL
; i
++, sect
= sect
->next
)
801 if ((bfd_get_section_flags (abfd
, sect
) & SEC_ALLOC
) == 0)
804 vma
= bfd_get_section_vma (abfd
, sect
);
807 if (vma
+ bfd_get_section_size (sect
) > high
)
808 high
= vma
+ bfd_get_section_size (sect
);
810 data
->segment_info
[i
] = 1;
813 data
->segment_bases
[0] = low
;
814 data
->segment_sizes
[0] = high
- low
;
819 /* This is a convenience function to call sym_read for OBJFILE and
820 possibly force the partial symbols to be read. */
823 read_symbols (struct objfile
*objfile
, int add_flags
)
825 (*objfile
->sf
->sym_read
) (objfile
, add_flags
);
827 /* find_separate_debug_file_in_section should be called only if there is
828 single binary with no existing separate debug info file. */
829 if (!objfile_has_partial_symbols (objfile
)
830 && objfile
->separate_debug_objfile
== NULL
831 && objfile
->separate_debug_objfile_backlink
== NULL
)
833 bfd
*abfd
= find_separate_debug_file_in_section (objfile
);
834 struct cleanup
*cleanup
= make_cleanup_bfd_unref (abfd
);
837 symbol_file_add_separate (abfd
, add_flags
, objfile
);
839 do_cleanups (cleanup
);
841 if ((add_flags
& SYMFILE_NO_READ
) == 0)
842 require_partial_symbols (objfile
, 0);
845 /* Initialize entry point information for this objfile. */
848 init_entry_point_info (struct objfile
*objfile
)
850 /* Save startup file's range of PC addresses to help blockframe.c
851 decide where the bottom of the stack is. */
853 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
855 /* Executable file -- record its entry point so we'll recognize
856 the startup file because it contains the entry point. */
857 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
858 objfile
->ei
.entry_point_p
= 1;
860 else if (bfd_get_file_flags (objfile
->obfd
) & DYNAMIC
861 && bfd_get_start_address (objfile
->obfd
) != 0)
863 /* Some shared libraries may have entry points set and be
864 runnable. There's no clear way to indicate this, so just check
865 for values other than zero. */
866 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
867 objfile
->ei
.entry_point_p
= 1;
871 /* Examination of non-executable.o files. Short-circuit this stuff. */
872 objfile
->ei
.entry_point_p
= 0;
875 if (objfile
->ei
.entry_point_p
)
877 CORE_ADDR entry_point
= objfile
->ei
.entry_point
;
879 /* Make certain that the address points at real code, and not a
880 function descriptor. */
882 = gdbarch_convert_from_func_ptr_addr (objfile
->gdbarch
,
886 /* Remove any ISA markers, so that this matches entries in the
888 objfile
->ei
.entry_point
889 = gdbarch_addr_bits_remove (objfile
->gdbarch
, entry_point
);
893 /* Process a symbol file, as either the main file or as a dynamically
896 This function does not set the OBJFILE's entry-point info.
898 OBJFILE is where the symbols are to be read from.
900 ADDRS is the list of section load addresses. If the user has given
901 an 'add-symbol-file' command, then this is the list of offsets and
902 addresses he or she provided as arguments to the command; or, if
903 we're handling a shared library, these are the actual addresses the
904 sections are loaded at, according to the inferior's dynamic linker
905 (as gleaned by GDB's shared library code). We convert each address
906 into an offset from the section VMA's as it appears in the object
907 file, and then call the file's sym_offsets function to convert this
908 into a format-specific offset table --- a `struct section_offsets'.
909 If ADDRS is non-zero, OFFSETS must be zero.
911 OFFSETS is a table of section offsets already in the right
912 format-specific representation. NUM_OFFSETS is the number of
913 elements present in OFFSETS->offsets. If OFFSETS is non-zero, we
914 assume this is the proper table the call to sym_offsets described
915 above would produce. Instead of calling sym_offsets, we just dump
916 it right into objfile->section_offsets. (When we're re-reading
917 symbols from an objfile, we don't have the original load address
918 list any more; all we have is the section offset table.) If
919 OFFSETS is non-zero, ADDRS must be zero.
921 ADD_FLAGS encodes verbosity level, whether this is main symbol or
922 an extra symbol file such as dynamically loaded code, and wether
923 breakpoint reset should be deferred. */
926 syms_from_objfile_1 (struct objfile
*objfile
,
927 struct section_addr_info
*addrs
,
928 struct section_offsets
*offsets
,
932 struct section_addr_info
*local_addr
= NULL
;
933 struct cleanup
*old_chain
;
934 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
936 gdb_assert (! (addrs
&& offsets
));
938 objfile
->sf
= find_sym_fns (objfile
->obfd
);
940 if (objfile
->sf
== NULL
)
942 /* No symbols to load, but we still need to make sure
943 that the section_offsets table is allocated. */
944 int num_sections
= bfd_count_sections (objfile
->obfd
);
945 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
947 objfile
->num_sections
= num_sections
;
948 objfile
->section_offsets
949 = obstack_alloc (&objfile
->objfile_obstack
, size
);
950 memset (objfile
->section_offsets
, 0, size
);
954 /* Make sure that partially constructed symbol tables will be cleaned up
955 if an error occurs during symbol reading. */
956 old_chain
= make_cleanup_free_objfile (objfile
);
958 /* If ADDRS and OFFSETS are both NULL, put together a dummy address
959 list. We now establish the convention that an addr of zero means
960 no load address was specified. */
961 if (! addrs
&& ! offsets
)
964 = alloc_section_addr_info (bfd_count_sections (objfile
->obfd
));
965 make_cleanup (xfree
, local_addr
);
969 /* Now either addrs or offsets is non-zero. */
973 /* We will modify the main symbol table, make sure that all its users
974 will be cleaned up if an error occurs during symbol reading. */
975 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
977 /* Since no error yet, throw away the old symbol table. */
979 if (symfile_objfile
!= NULL
)
981 free_objfile (symfile_objfile
);
982 gdb_assert (symfile_objfile
== NULL
);
985 /* Currently we keep symbols from the add-symbol-file command.
986 If the user wants to get rid of them, they should do "symbol-file"
987 without arguments first. Not sure this is the best behavior
990 (*objfile
->sf
->sym_new_init
) (objfile
);
993 /* Convert addr into an offset rather than an absolute address.
994 We find the lowest address of a loaded segment in the objfile,
995 and assume that <addr> is where that got loaded.
997 We no longer warn if the lowest section is not a text segment (as
998 happens for the PA64 port. */
999 if (addrs
&& addrs
->other
[0].name
)
1000 addr_info_make_relative (addrs
, objfile
->obfd
);
1002 /* Initialize symbol reading routines for this objfile, allow complaints to
1003 appear for this new file, and record how verbose to be, then do the
1004 initial symbol reading for this file. */
1006 (*objfile
->sf
->sym_init
) (objfile
);
1007 clear_complaints (&symfile_complaints
, 1, add_flags
& SYMFILE_VERBOSE
);
1010 (*objfile
->sf
->sym_offsets
) (objfile
, addrs
);
1013 size_t size
= SIZEOF_N_SECTION_OFFSETS (num_offsets
);
1015 /* Just copy in the offset table directly as given to us. */
1016 objfile
->num_sections
= num_offsets
;
1017 objfile
->section_offsets
1018 = ((struct section_offsets
*)
1019 obstack_alloc (&objfile
->objfile_obstack
, size
));
1020 memcpy (objfile
->section_offsets
, offsets
, size
);
1022 init_objfile_sect_indices (objfile
);
1025 read_symbols (objfile
, add_flags
);
1027 /* Discard cleanups as symbol reading was successful. */
1029 discard_cleanups (old_chain
);
1033 /* Same as syms_from_objfile_1, but also initializes the objfile
1034 entry-point info. */
1037 syms_from_objfile (struct objfile
*objfile
,
1038 struct section_addr_info
*addrs
,
1039 struct section_offsets
*offsets
,
1043 syms_from_objfile_1 (objfile
, addrs
, offsets
, num_offsets
, add_flags
);
1044 init_entry_point_info (objfile
);
1047 /* Perform required actions after either reading in the initial
1048 symbols for a new objfile, or mapping in the symbols from a reusable
1049 objfile. ADD_FLAGS is a bitmask of enum symfile_add_flags. */
1052 new_symfile_objfile (struct objfile
*objfile
, int add_flags
)
1054 /* If this is the main symbol file we have to clean up all users of the
1055 old main symbol file. Otherwise it is sufficient to fixup all the
1056 breakpoints that may have been redefined by this symbol file. */
1057 if (add_flags
& SYMFILE_MAINLINE
)
1059 /* OK, make it the "real" symbol file. */
1060 symfile_objfile
= objfile
;
1062 clear_symtab_users (add_flags
);
1064 else if ((add_flags
& SYMFILE_DEFER_BP_RESET
) == 0)
1066 breakpoint_re_set ();
1069 /* We're done reading the symbol file; finish off complaints. */
1070 clear_complaints (&symfile_complaints
, 0, add_flags
& SYMFILE_VERBOSE
);
1073 /* Process a symbol file, as either the main file or as a dynamically
1076 ABFD is a BFD already open on the file, as from symfile_bfd_open.
1077 A new reference is acquired by this function.
1079 ADD_FLAGS encodes verbosity, whether this is main symbol file or
1080 extra, such as dynamically loaded code, and what to do with breakpoins.
1082 ADDRS, OFFSETS, and NUM_OFFSETS are as described for
1083 syms_from_objfile, above.
1084 ADDRS is ignored when SYMFILE_MAINLINE bit is set in ADD_FLAGS.
1086 PARENT is the original objfile if ABFD is a separate debug info file.
1087 Otherwise PARENT is NULL.
1089 Upon success, returns a pointer to the objfile that was added.
1090 Upon failure, jumps back to command level (never returns). */
1092 static struct objfile
*
1093 symbol_file_add_with_addrs_or_offsets (bfd
*abfd
,
1095 struct section_addr_info
*addrs
,
1096 struct section_offsets
*offsets
,
1098 int flags
, struct objfile
*parent
)
1100 struct objfile
*objfile
;
1101 const char *name
= bfd_get_filename (abfd
);
1102 const int from_tty
= add_flags
& SYMFILE_VERBOSE
;
1103 const int mainline
= add_flags
& SYMFILE_MAINLINE
;
1104 const int should_print
= ((from_tty
|| info_verbose
)
1105 && (readnow_symbol_files
1106 || (add_flags
& SYMFILE_NO_READ
) == 0));
1108 if (readnow_symbol_files
)
1110 flags
|= OBJF_READNOW
;
1111 add_flags
&= ~SYMFILE_NO_READ
;
1114 /* Give user a chance to burp if we'd be
1115 interactively wiping out any existing symbols. */
1117 if ((have_full_symbols () || have_partial_symbols ())
1120 && !query (_("Load new symbol table from \"%s\"? "), name
))
1121 error (_("Not confirmed."));
1123 objfile
= allocate_objfile (abfd
, flags
| (mainline
? OBJF_MAINLINE
: 0));
1126 add_separate_debug_objfile (objfile
, parent
);
1128 /* We either created a new mapped symbol table, mapped an existing
1129 symbol table file which has not had initial symbol reading
1130 performed, or need to read an unmapped symbol table. */
1133 if (deprecated_pre_add_symbol_hook
)
1134 deprecated_pre_add_symbol_hook (name
);
1137 printf_unfiltered (_("Reading symbols from %s..."), name
);
1139 gdb_flush (gdb_stdout
);
1142 syms_from_objfile (objfile
, addrs
, offsets
, num_offsets
,
1145 /* We now have at least a partial symbol table. Check to see if the
1146 user requested that all symbols be read on initial access via either
1147 the gdb startup command line or on a per symbol file basis. Expand
1148 all partial symbol tables for this objfile if so. */
1150 if ((flags
& OBJF_READNOW
))
1154 printf_unfiltered (_("expanding to full symbols..."));
1156 gdb_flush (gdb_stdout
);
1160 objfile
->sf
->qf
->expand_all_symtabs (objfile
);
1163 if (should_print
&& !objfile_has_symbols (objfile
))
1166 printf_unfiltered (_("(no debugging symbols found)..."));
1172 if (deprecated_post_add_symbol_hook
)
1173 deprecated_post_add_symbol_hook ();
1175 printf_unfiltered (_("done.\n"));
1178 /* We print some messages regardless of whether 'from_tty ||
1179 info_verbose' is true, so make sure they go out at the right
1181 gdb_flush (gdb_stdout
);
1183 if (objfile
->sf
== NULL
)
1185 observer_notify_new_objfile (objfile
);
1186 return objfile
; /* No symbols. */
1189 new_symfile_objfile (objfile
, add_flags
);
1191 observer_notify_new_objfile (objfile
);
1193 bfd_cache_close_all ();
1197 /* Add BFD as a separate debug file for OBJFILE. */
1200 symbol_file_add_separate (bfd
*bfd
, int symfile_flags
, struct objfile
*objfile
)
1202 struct objfile
*new_objfile
;
1203 struct section_addr_info
*sap
;
1204 struct cleanup
*my_cleanup
;
1206 /* Create section_addr_info. We can't directly use offsets from OBJFILE
1207 because sections of BFD may not match sections of OBJFILE and because
1208 vma may have been modified by tools such as prelink. */
1209 sap
= build_section_addr_info_from_objfile (objfile
);
1210 my_cleanup
= make_cleanup_free_section_addr_info (sap
);
1212 new_objfile
= symbol_file_add_with_addrs_or_offsets
1213 (bfd
, symfile_flags
,
1215 objfile
->flags
& (OBJF_REORDERED
| OBJF_SHARED
| OBJF_READNOW
1219 do_cleanups (my_cleanup
);
1222 /* Process the symbol file ABFD, as either the main file or as a
1223 dynamically loaded file.
1225 See symbol_file_add_with_addrs_or_offsets's comments for
1228 symbol_file_add_from_bfd (bfd
*abfd
, int add_flags
,
1229 struct section_addr_info
*addrs
,
1230 int flags
, struct objfile
*parent
)
1232 return symbol_file_add_with_addrs_or_offsets (abfd
, add_flags
, addrs
, 0, 0,
1237 /* Process a symbol file, as either the main file or as a dynamically
1238 loaded file. See symbol_file_add_with_addrs_or_offsets's comments
1241 symbol_file_add (char *name
, int add_flags
, struct section_addr_info
*addrs
,
1244 bfd
*bfd
= symfile_bfd_open (name
);
1245 struct cleanup
*cleanup
= make_cleanup_bfd_unref (bfd
);
1246 struct objfile
*objf
;
1248 objf
= symbol_file_add_from_bfd (bfd
, add_flags
, addrs
, flags
, NULL
);
1249 do_cleanups (cleanup
);
1254 /* Call symbol_file_add() with default values and update whatever is
1255 affected by the loading of a new main().
1256 Used when the file is supplied in the gdb command line
1257 and by some targets with special loading requirements.
1258 The auxiliary function, symbol_file_add_main_1(), has the flags
1259 argument for the switches that can only be specified in the symbol_file
1263 symbol_file_add_main (char *args
, int from_tty
)
1265 symbol_file_add_main_1 (args
, from_tty
, 0);
1269 symbol_file_add_main_1 (char *args
, int from_tty
, int flags
)
1271 const int add_flags
= (current_inferior ()->symfile_flags
1272 | SYMFILE_MAINLINE
| (from_tty
? SYMFILE_VERBOSE
: 0));
1274 symbol_file_add (args
, add_flags
, NULL
, flags
);
1276 /* Getting new symbols may change our opinion about
1277 what is frameless. */
1278 reinit_frame_cache ();
1280 if ((flags
& SYMFILE_NO_READ
) == 0)
1281 set_initial_language ();
1285 symbol_file_clear (int from_tty
)
1287 if ((have_full_symbols () || have_partial_symbols ())
1290 ? !query (_("Discard symbol table from `%s'? "),
1291 symfile_objfile
->name
)
1292 : !query (_("Discard symbol table? "))))
1293 error (_("Not confirmed."));
1295 /* solib descriptors may have handles to objfiles. Wipe them before their
1296 objfiles get stale by free_all_objfiles. */
1297 no_shared_libraries (NULL
, from_tty
);
1299 free_all_objfiles ();
1301 gdb_assert (symfile_objfile
== NULL
);
1303 printf_unfiltered (_("No symbol file now.\n"));
1307 get_debug_link_info (struct objfile
*objfile
, unsigned long *crc32_out
)
1310 bfd_size_type debuglink_size
;
1311 unsigned long crc32
;
1315 sect
= bfd_get_section_by_name (objfile
->obfd
, ".gnu_debuglink");
1320 debuglink_size
= bfd_section_size (objfile
->obfd
, sect
);
1322 contents
= xmalloc (debuglink_size
);
1323 bfd_get_section_contents (objfile
->obfd
, sect
, contents
,
1324 (file_ptr
)0, (bfd_size_type
)debuglink_size
);
1326 /* Crc value is stored after the filename, aligned up to 4 bytes. */
1327 crc_offset
= strlen (contents
) + 1;
1328 crc_offset
= (crc_offset
+ 3) & ~3;
1330 crc32
= bfd_get_32 (objfile
->obfd
, (bfd_byte
*) (contents
+ crc_offset
));
1336 /* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and
1337 return 1. Otherwise print a warning and return 0. ABFD seek position is
1341 get_file_crc (bfd
*abfd
, unsigned long *file_crc_return
)
1343 unsigned long file_crc
= 0;
1345 if (bfd_seek (abfd
, 0, SEEK_SET
) != 0)
1347 warning (_("Problem reading \"%s\" for CRC: %s"),
1348 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1354 gdb_byte buffer
[8 * 1024];
1355 bfd_size_type count
;
1357 count
= bfd_bread (buffer
, sizeof (buffer
), abfd
);
1358 if (count
== (bfd_size_type
) -1)
1360 warning (_("Problem reading \"%s\" for CRC: %s"),
1361 bfd_get_filename (abfd
), bfd_errmsg (bfd_get_error ()));
1366 file_crc
= bfd_calc_gnu_debuglink_crc32 (file_crc
, buffer
, count
);
1369 *file_crc_return
= file_crc
;
1374 separate_debug_file_exists (const char *name
, unsigned long crc
,
1375 struct objfile
*parent_objfile
)
1377 unsigned long file_crc
;
1380 struct stat parent_stat
, abfd_stat
;
1381 int verified_as_different
;
1383 /* Find a separate debug info file as if symbols would be present in
1384 PARENT_OBJFILE itself this function would not be called. .gnu_debuglink
1385 section can contain just the basename of PARENT_OBJFILE without any
1386 ".debug" suffix as "/usr/lib/debug/path/to/file" is a separate tree where
1387 the separate debug infos with the same basename can exist. */
1389 if (filename_cmp (name
, parent_objfile
->name
) == 0)
1392 abfd
= gdb_bfd_open_maybe_remote (name
);
1397 /* Verify symlinks were not the cause of filename_cmp name difference above.
1399 Some operating systems, e.g. Windows, do not provide a meaningful
1400 st_ino; they always set it to zero. (Windows does provide a
1401 meaningful st_dev.) Do not indicate a duplicate library in that
1402 case. While there is no guarantee that a system that provides
1403 meaningful inode numbers will never set st_ino to zero, this is
1404 merely an optimization, so we do not need to worry about false
1407 if (bfd_stat (abfd
, &abfd_stat
) == 0
1408 && abfd_stat
.st_ino
!= 0
1409 && bfd_stat (parent_objfile
->obfd
, &parent_stat
) == 0)
1411 if (abfd_stat
.st_dev
== parent_stat
.st_dev
1412 && abfd_stat
.st_ino
== parent_stat
.st_ino
)
1414 gdb_bfd_unref (abfd
);
1417 verified_as_different
= 1;
1420 verified_as_different
= 0;
1422 file_crc_p
= get_file_crc (abfd
, &file_crc
);
1424 gdb_bfd_unref (abfd
);
1429 if (crc
!= file_crc
)
1431 /* If one (or both) the files are accessed for example the via "remote:"
1432 gdbserver way it does not support the bfd_stat operation. Verify
1433 whether those two files are not the same manually. */
1435 if (!verified_as_different
&& !parent_objfile
->crc32_p
)
1437 parent_objfile
->crc32_p
= get_file_crc (parent_objfile
->obfd
,
1438 &parent_objfile
->crc32
);
1439 if (!parent_objfile
->crc32_p
)
1443 if (verified_as_different
|| parent_objfile
->crc32
!= file_crc
)
1444 warning (_("the debug information found in \"%s\""
1445 " does not match \"%s\" (CRC mismatch).\n"),
1446 name
, parent_objfile
->name
);
1454 char *debug_file_directory
= NULL
;
1456 show_debug_file_directory (struct ui_file
*file
, int from_tty
,
1457 struct cmd_list_element
*c
, const char *value
)
1459 fprintf_filtered (file
,
1460 _("The directory where separate debug "
1461 "symbols are searched for is \"%s\".\n"),
1465 #if ! defined (DEBUG_SUBDIRECTORY)
1466 #define DEBUG_SUBDIRECTORY ".debug"
1469 /* Find a separate debuginfo file for OBJFILE, using DIR as the directory
1470 where the original file resides (may not be the same as
1471 dirname(objfile->name) due to symlinks), and DEBUGLINK as the file we are
1472 looking for. Returns the name of the debuginfo, of NULL. */
1475 find_separate_debug_file (const char *dir
,
1476 const char *canon_dir
,
1477 const char *debuglink
,
1478 unsigned long crc32
, struct objfile
*objfile
)
1483 VEC (char_ptr
) *debugdir_vec
;
1484 struct cleanup
*back_to
;
1487 /* Set I to max (strlen (canon_dir), strlen (dir)). */
1489 if (canon_dir
!= NULL
&& strlen (canon_dir
) > i
)
1490 i
= strlen (canon_dir
);
1492 debugfile
= xmalloc (strlen (debug_file_directory
) + 1
1494 + strlen (DEBUG_SUBDIRECTORY
)
1496 + strlen (debuglink
)
1499 /* First try in the same directory as the original file. */
1500 strcpy (debugfile
, dir
);
1501 strcat (debugfile
, debuglink
);
1503 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1506 /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
1507 strcpy (debugfile
, dir
);
1508 strcat (debugfile
, DEBUG_SUBDIRECTORY
);
1509 strcat (debugfile
, "/");
1510 strcat (debugfile
, debuglink
);
1512 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1515 /* Then try in the global debugfile directories.
1517 Keep backward compatibility so that DEBUG_FILE_DIRECTORY being "" will
1518 cause "/..." lookups. */
1520 debugdir_vec
= dirnames_to_char_ptr_vec (debug_file_directory
);
1521 back_to
= make_cleanup_free_char_ptr_vec (debugdir_vec
);
1523 for (ix
= 0; VEC_iterate (char_ptr
, debugdir_vec
, ix
, debugdir
); ++ix
)
1525 strcpy (debugfile
, debugdir
);
1526 strcat (debugfile
, "/");
1527 strcat (debugfile
, dir
);
1528 strcat (debugfile
, debuglink
);
1530 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1533 /* If the file is in the sysroot, try using its base path in the
1534 global debugfile directory. */
1535 if (canon_dir
!= NULL
1536 && filename_ncmp (canon_dir
, gdb_sysroot
,
1537 strlen (gdb_sysroot
)) == 0
1538 && IS_DIR_SEPARATOR (canon_dir
[strlen (gdb_sysroot
)]))
1540 strcpy (debugfile
, debugdir
);
1541 strcat (debugfile
, canon_dir
+ strlen (gdb_sysroot
));
1542 strcat (debugfile
, "/");
1543 strcat (debugfile
, debuglink
);
1545 if (separate_debug_file_exists (debugfile
, crc32
, objfile
))
1550 do_cleanups (back_to
);
1555 /* Modify PATH to contain only "directory/" part of PATH.
1556 If there were no directory separators in PATH, PATH will be empty
1557 string on return. */
1560 terminate_after_last_dir_separator (char *path
)
1564 /* Strip off the final filename part, leaving the directory name,
1565 followed by a slash. The directory can be relative or absolute. */
1566 for (i
= strlen(path
) - 1; i
>= 0; i
--)
1567 if (IS_DIR_SEPARATOR (path
[i
]))
1570 /* If I is -1 then no directory is present there and DIR will be "". */
1574 /* Find separate debuginfo for OBJFILE (using .gnu_debuglink section).
1575 Returns pathname, or NULL. */
1578 find_separate_debug_file_by_debuglink (struct objfile
*objfile
)
1581 char *dir
, *canon_dir
;
1583 unsigned long crc32
;
1584 struct cleanup
*cleanups
;
1586 debuglink
= get_debug_link_info (objfile
, &crc32
);
1588 if (debuglink
== NULL
)
1590 /* There's no separate debug info, hence there's no way we could
1591 load it => no warning. */
1595 cleanups
= make_cleanup (xfree
, debuglink
);
1596 dir
= xstrdup (objfile
->name
);
1597 make_cleanup (xfree
, dir
);
1598 terminate_after_last_dir_separator (dir
);
1599 canon_dir
= lrealpath (dir
);
1601 debugfile
= find_separate_debug_file (dir
, canon_dir
, debuglink
,
1605 if (debugfile
== NULL
)
1608 /* For PR gdb/9538, try again with realpath (if different from the
1613 if (lstat (objfile
->name
, &st_buf
) == 0 && S_ISLNK(st_buf
.st_mode
))
1617 symlink_dir
= lrealpath (objfile
->name
);
1618 if (symlink_dir
!= NULL
)
1620 make_cleanup (xfree
, symlink_dir
);
1621 terminate_after_last_dir_separator (symlink_dir
);
1622 if (strcmp (dir
, symlink_dir
) != 0)
1624 /* Different directory, so try using it. */
1625 debugfile
= find_separate_debug_file (symlink_dir
,
1633 #endif /* HAVE_LSTAT */
1636 do_cleanups (cleanups
);
1641 /* This is the symbol-file command. Read the file, analyze its
1642 symbols, and add a struct symtab to a symtab list. The syntax of
1643 the command is rather bizarre:
1645 1. The function buildargv implements various quoting conventions
1646 which are undocumented and have little or nothing in common with
1647 the way things are quoted (or not quoted) elsewhere in GDB.
1649 2. Options are used, which are not generally used in GDB (perhaps
1650 "set mapped on", "set readnow on" would be better)
1652 3. The order of options matters, which is contrary to GNU
1653 conventions (because it is confusing and inconvenient). */
1656 symbol_file_command (char *args
, int from_tty
)
1662 symbol_file_clear (from_tty
);
1666 char **argv
= gdb_buildargv (args
);
1667 int flags
= OBJF_USERLOADED
;
1668 struct cleanup
*cleanups
;
1671 cleanups
= make_cleanup_freeargv (argv
);
1672 while (*argv
!= NULL
)
1674 if (strcmp (*argv
, "-readnow") == 0)
1675 flags
|= OBJF_READNOW
;
1676 else if (**argv
== '-')
1677 error (_("unknown option `%s'"), *argv
);
1680 symbol_file_add_main_1 (*argv
, from_tty
, flags
);
1688 error (_("no symbol file name was specified"));
1690 do_cleanups (cleanups
);
1694 /* Set the initial language.
1696 FIXME: A better solution would be to record the language in the
1697 psymtab when reading partial symbols, and then use it (if known) to
1698 set the language. This would be a win for formats that encode the
1699 language in an easily discoverable place, such as DWARF. For
1700 stabs, we can jump through hoops looking for specially named
1701 symbols or try to intuit the language from the specific type of
1702 stabs we find, but we can't do that until later when we read in
1706 set_initial_language (void)
1708 enum language lang
= language_unknown
;
1710 if (language_of_main
!= language_unknown
)
1711 lang
= language_of_main
;
1714 const char *filename
;
1716 filename
= find_main_filename ();
1717 if (filename
!= NULL
)
1718 lang
= deduce_language_from_filename (filename
);
1721 if (lang
== language_unknown
)
1723 /* Make C the default language */
1727 set_language (lang
);
1728 expected_language
= current_language
; /* Don't warn the user. */
1731 /* If NAME is a remote name open the file using remote protocol, otherwise
1732 open it normally. Returns a new reference to the BFD. On error,
1733 returns NULL with the BFD error set. */
1736 gdb_bfd_open_maybe_remote (const char *name
)
1740 if (remote_filename_p (name
))
1741 result
= remote_bfd_open (name
, gnutarget
);
1743 result
= gdb_bfd_open (name
, gnutarget
, -1);
1749 /* Open the file specified by NAME and hand it off to BFD for
1750 preliminary analysis. Return a newly initialized bfd *, which
1751 includes a newly malloc'd` copy of NAME (tilde-expanded and made
1752 absolute). In case of trouble, error() is called. */
1755 symfile_bfd_open (char *name
)
1759 char *absolute_name
;
1761 if (remote_filename_p (name
))
1763 sym_bfd
= remote_bfd_open (name
, gnutarget
);
1765 error (_("`%s': can't open to read symbols: %s."), name
,
1766 bfd_errmsg (bfd_get_error ()));
1768 if (!bfd_check_format (sym_bfd
, bfd_object
))
1770 make_cleanup_bfd_unref (sym_bfd
);
1771 error (_("`%s': can't read symbols: %s."), name
,
1772 bfd_errmsg (bfd_get_error ()));
1778 name
= tilde_expand (name
); /* Returns 1st new malloc'd copy. */
1780 /* Look down path for it, allocate 2nd new malloc'd copy. */
1781 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, name
,
1782 O_RDONLY
| O_BINARY
, &absolute_name
);
1783 #if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
1786 char *exename
= alloca (strlen (name
) + 5);
1788 strcat (strcpy (exename
, name
), ".exe");
1789 desc
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, exename
,
1790 O_RDONLY
| O_BINARY
, &absolute_name
);
1795 make_cleanup (xfree
, name
);
1796 perror_with_name (name
);
1800 name
= absolute_name
;
1801 make_cleanup (xfree
, name
);
1803 sym_bfd
= gdb_bfd_open (name
, gnutarget
, desc
);
1806 make_cleanup (xfree
, name
);
1807 error (_("`%s': can't open to read symbols: %s."), name
,
1808 bfd_errmsg (bfd_get_error ()));
1810 bfd_set_cacheable (sym_bfd
, 1);
1812 if (!bfd_check_format (sym_bfd
, bfd_object
))
1814 make_cleanup_bfd_unref (sym_bfd
);
1815 error (_("`%s': can't read symbols: %s."), name
,
1816 bfd_errmsg (bfd_get_error ()));
1822 /* Return the section index for SECTION_NAME on OBJFILE. Return -1 if
1823 the section was not found. */
1826 get_section_index (struct objfile
*objfile
, char *section_name
)
1828 asection
*sect
= bfd_get_section_by_name (objfile
->obfd
, section_name
);
1836 /* Link SF into the global symtab_fns list. Called on startup by the
1837 _initialize routine in each object file format reader, to register
1838 information about each format the reader is prepared to handle. */
1841 add_symtab_fns (const struct sym_fns
*sf
)
1843 VEC_safe_push (sym_fns_ptr
, symtab_fns
, sf
);
1846 /* Initialize OBJFILE to read symbols from its associated BFD. It
1847 either returns or calls error(). The result is an initialized
1848 struct sym_fns in the objfile structure, that contains cached
1849 information about the symbol file. */
1851 static const struct sym_fns
*
1852 find_sym_fns (bfd
*abfd
)
1854 const struct sym_fns
*sf
;
1855 enum bfd_flavour our_flavour
= bfd_get_flavour (abfd
);
1858 if (our_flavour
== bfd_target_srec_flavour
1859 || our_flavour
== bfd_target_ihex_flavour
1860 || our_flavour
== bfd_target_tekhex_flavour
)
1861 return NULL
; /* No symbols. */
1863 for (i
= 0; VEC_iterate (sym_fns_ptr
, symtab_fns
, i
, sf
); ++i
)
1864 if (our_flavour
== sf
->sym_flavour
)
1867 error (_("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown."),
1868 bfd_get_target (abfd
));
1872 /* This function runs the load command of our current target. */
1875 load_command (char *arg
, int from_tty
)
1879 /* The user might be reloading because the binary has changed. Take
1880 this opportunity to check. */
1881 reopen_exec_file ();
1889 parg
= arg
= get_exec_file (1);
1891 /* Count how many \ " ' tab space there are in the name. */
1892 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1900 /* We need to quote this string so buildargv can pull it apart. */
1901 char *temp
= xmalloc (strlen (arg
) + count
+ 1 );
1905 make_cleanup (xfree
, temp
);
1908 while ((parg
= strpbrk (parg
, "\\\"'\t ")))
1910 strncpy (ptemp
, prev
, parg
- prev
);
1911 ptemp
+= parg
- prev
;
1915 strcpy (ptemp
, prev
);
1921 target_load (arg
, from_tty
);
1923 /* After re-loading the executable, we don't really know which
1924 overlays are mapped any more. */
1925 overlay_cache_invalid
= 1;
1928 /* This version of "load" should be usable for any target. Currently
1929 it is just used for remote targets, not inftarg.c or core files,
1930 on the theory that only in that case is it useful.
1932 Avoiding xmodem and the like seems like a win (a) because we don't have
1933 to worry about finding it, and (b) On VMS, fork() is very slow and so
1934 we don't want to run a subprocess. On the other hand, I'm not sure how
1935 performance compares. */
1937 static int validate_download
= 0;
1939 /* Callback service function for generic_load (bfd_map_over_sections). */
1942 add_section_size_callback (bfd
*abfd
, asection
*asec
, void *data
)
1944 bfd_size_type
*sum
= data
;
1946 *sum
+= bfd_get_section_size (asec
);
1949 /* Opaque data for load_section_callback. */
1950 struct load_section_data
{
1951 unsigned long load_offset
;
1952 struct load_progress_data
*progress_data
;
1953 VEC(memory_write_request_s
) *requests
;
1956 /* Opaque data for load_progress. */
1957 struct load_progress_data
{
1958 /* Cumulative data. */
1959 unsigned long write_count
;
1960 unsigned long data_count
;
1961 bfd_size_type total_size
;
1964 /* Opaque data for load_progress for a single section. */
1965 struct load_progress_section_data
{
1966 struct load_progress_data
*cumulative
;
1968 /* Per-section data. */
1969 const char *section_name
;
1970 ULONGEST section_sent
;
1971 ULONGEST section_size
;
1976 /* Target write callback routine for progress reporting. */
1979 load_progress (ULONGEST bytes
, void *untyped_arg
)
1981 struct load_progress_section_data
*args
= untyped_arg
;
1982 struct load_progress_data
*totals
;
1985 /* Writing padding data. No easy way to get at the cumulative
1986 stats, so just ignore this. */
1989 totals
= args
->cumulative
;
1991 if (bytes
== 0 && args
->section_sent
== 0)
1993 /* The write is just starting. Let the user know we've started
1995 ui_out_message (current_uiout
, 0, "Loading section %s, size %s lma %s\n",
1996 args
->section_name
, hex_string (args
->section_size
),
1997 paddress (target_gdbarch (), args
->lma
));
2001 if (validate_download
)
2003 /* Broken memories and broken monitors manifest themselves here
2004 when bring new computers to life. This doubles already slow
2006 /* NOTE: cagney/1999-10-18: A more efficient implementation
2007 might add a verify_memory() method to the target vector and
2008 then use that. remote.c could implement that method using
2009 the ``qCRC'' packet. */
2010 gdb_byte
*check
= xmalloc (bytes
);
2011 struct cleanup
*verify_cleanups
= make_cleanup (xfree
, check
);
2013 if (target_read_memory (args
->lma
, check
, bytes
) != 0)
2014 error (_("Download verify read failed at %s"),
2015 paddress (target_gdbarch (), args
->lma
));
2016 if (memcmp (args
->buffer
, check
, bytes
) != 0)
2017 error (_("Download verify compare failed at %s"),
2018 paddress (target_gdbarch (), args
->lma
));
2019 do_cleanups (verify_cleanups
);
2021 totals
->data_count
+= bytes
;
2023 args
->buffer
+= bytes
;
2024 totals
->write_count
+= 1;
2025 args
->section_sent
+= bytes
;
2026 if (check_quit_flag ()
2027 || (deprecated_ui_load_progress_hook
!= NULL
2028 && deprecated_ui_load_progress_hook (args
->section_name
,
2029 args
->section_sent
)))
2030 error (_("Canceled the download"));
2032 if (deprecated_show_load_progress
!= NULL
)
2033 deprecated_show_load_progress (args
->section_name
,
2037 totals
->total_size
);
2040 /* Callback service function for generic_load (bfd_map_over_sections). */
2043 load_section_callback (bfd
*abfd
, asection
*asec
, void *data
)
2045 struct memory_write_request
*new_request
;
2046 struct load_section_data
*args
= data
;
2047 struct load_progress_section_data
*section_data
;
2048 bfd_size_type size
= bfd_get_section_size (asec
);
2050 const char *sect_name
= bfd_get_section_name (abfd
, asec
);
2052 if ((bfd_get_section_flags (abfd
, asec
) & SEC_LOAD
) == 0)
2058 new_request
= VEC_safe_push (memory_write_request_s
,
2059 args
->requests
, NULL
);
2060 memset (new_request
, 0, sizeof (struct memory_write_request
));
2061 section_data
= xcalloc (1, sizeof (struct load_progress_section_data
));
2062 new_request
->begin
= bfd_section_lma (abfd
, asec
) + args
->load_offset
;
2063 new_request
->end
= new_request
->begin
+ size
; /* FIXME Should size
2065 new_request
->data
= xmalloc (size
);
2066 new_request
->baton
= section_data
;
2068 buffer
= new_request
->data
;
2070 section_data
->cumulative
= args
->progress_data
;
2071 section_data
->section_name
= sect_name
;
2072 section_data
->section_size
= size
;
2073 section_data
->lma
= new_request
->begin
;
2074 section_data
->buffer
= buffer
;
2076 bfd_get_section_contents (abfd
, asec
, buffer
, 0, size
);
2079 /* Clean up an entire memory request vector, including load
2080 data and progress records. */
2083 clear_memory_write_data (void *arg
)
2085 VEC(memory_write_request_s
) **vec_p
= arg
;
2086 VEC(memory_write_request_s
) *vec
= *vec_p
;
2088 struct memory_write_request
*mr
;
2090 for (i
= 0; VEC_iterate (memory_write_request_s
, vec
, i
, mr
); ++i
)
2095 VEC_free (memory_write_request_s
, vec
);
2099 generic_load (char *args
, int from_tty
)
2102 struct timeval start_time
, end_time
;
2104 struct cleanup
*old_cleanups
= make_cleanup (null_cleanup
, 0);
2105 struct load_section_data cbdata
;
2106 struct load_progress_data total_progress
;
2107 struct ui_out
*uiout
= current_uiout
;
2112 memset (&cbdata
, 0, sizeof (cbdata
));
2113 memset (&total_progress
, 0, sizeof (total_progress
));
2114 cbdata
.progress_data
= &total_progress
;
2116 make_cleanup (clear_memory_write_data
, &cbdata
.requests
);
2119 error_no_arg (_("file to load"));
2121 argv
= gdb_buildargv (args
);
2122 make_cleanup_freeargv (argv
);
2124 filename
= tilde_expand (argv
[0]);
2125 make_cleanup (xfree
, filename
);
2127 if (argv
[1] != NULL
)
2131 cbdata
.load_offset
= strtoul (argv
[1], &endptr
, 0);
2133 /* If the last word was not a valid number then
2134 treat it as a file name with spaces in. */
2135 if (argv
[1] == endptr
)
2136 error (_("Invalid download offset:%s."), argv
[1]);
2138 if (argv
[2] != NULL
)
2139 error (_("Too many parameters."));
2142 /* Open the file for loading. */
2143 loadfile_bfd
= gdb_bfd_open (filename
, gnutarget
, -1);
2144 if (loadfile_bfd
== NULL
)
2146 perror_with_name (filename
);
2150 make_cleanup_bfd_unref (loadfile_bfd
);
2152 if (!bfd_check_format (loadfile_bfd
, bfd_object
))
2154 error (_("\"%s\" is not an object file: %s"), filename
,
2155 bfd_errmsg (bfd_get_error ()));
2158 bfd_map_over_sections (loadfile_bfd
, add_section_size_callback
,
2159 (void *) &total_progress
.total_size
);
2161 bfd_map_over_sections (loadfile_bfd
, load_section_callback
, &cbdata
);
2163 gettimeofday (&start_time
, NULL
);
2165 if (target_write_memory_blocks (cbdata
.requests
, flash_discard
,
2166 load_progress
) != 0)
2167 error (_("Load failed"));
2169 gettimeofday (&end_time
, NULL
);
2171 entry
= bfd_get_start_address (loadfile_bfd
);
2172 entry
= gdbarch_addr_bits_remove (target_gdbarch (), entry
);
2173 ui_out_text (uiout
, "Start address ");
2174 ui_out_field_fmt (uiout
, "address", "%s", paddress (target_gdbarch (), entry
));
2175 ui_out_text (uiout
, ", load size ");
2176 ui_out_field_fmt (uiout
, "load-size", "%lu", total_progress
.data_count
);
2177 ui_out_text (uiout
, "\n");
2178 /* We were doing this in remote-mips.c, I suspect it is right
2179 for other targets too. */
2180 regcache_write_pc (get_current_regcache (), entry
);
2182 /* Reset breakpoints, now that we have changed the load image. For
2183 instance, breakpoints may have been set (or reset, by
2184 post_create_inferior) while connected to the target but before we
2185 loaded the program. In that case, the prologue analyzer could
2186 have read instructions from the target to find the right
2187 breakpoint locations. Loading has changed the contents of that
2190 breakpoint_re_set ();
2192 /* FIXME: are we supposed to call symbol_file_add or not? According
2193 to a comment from remote-mips.c (where a call to symbol_file_add
2194 was commented out), making the call confuses GDB if more than one
2195 file is loaded in. Some targets do (e.g., remote-vx.c) but
2196 others don't (or didn't - perhaps they have all been deleted). */
2198 print_transfer_performance (gdb_stdout
, total_progress
.data_count
,
2199 total_progress
.write_count
,
2200 &start_time
, &end_time
);
2202 do_cleanups (old_cleanups
);
2205 /* Report how fast the transfer went. */
2208 print_transfer_performance (struct ui_file
*stream
,
2209 unsigned long data_count
,
2210 unsigned long write_count
,
2211 const struct timeval
*start_time
,
2212 const struct timeval
*end_time
)
2214 ULONGEST time_count
;
2215 struct ui_out
*uiout
= current_uiout
;
2217 /* Compute the elapsed time in milliseconds, as a tradeoff between
2218 accuracy and overflow. */
2219 time_count
= (end_time
->tv_sec
- start_time
->tv_sec
) * 1000;
2220 time_count
+= (end_time
->tv_usec
- start_time
->tv_usec
) / 1000;
2222 ui_out_text (uiout
, "Transfer rate: ");
2225 unsigned long rate
= ((ULONGEST
) data_count
* 1000) / time_count
;
2227 if (ui_out_is_mi_like_p (uiout
))
2229 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
* 8);
2230 ui_out_text (uiout
, " bits/sec");
2232 else if (rate
< 1024)
2234 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
);
2235 ui_out_text (uiout
, " bytes/sec");
2239 ui_out_field_fmt (uiout
, "transfer-rate", "%lu", rate
/ 1024);
2240 ui_out_text (uiout
, " KB/sec");
2245 ui_out_field_fmt (uiout
, "transferred-bits", "%lu", (data_count
* 8));
2246 ui_out_text (uiout
, " bits in <1 sec");
2248 if (write_count
> 0)
2250 ui_out_text (uiout
, ", ");
2251 ui_out_field_fmt (uiout
, "write-rate", "%lu", data_count
/ write_count
);
2252 ui_out_text (uiout
, " bytes/write");
2254 ui_out_text (uiout
, ".\n");
2257 /* This function allows the addition of incrementally linked object files.
2258 It does not modify any state in the target, only in the debugger. */
2259 /* Note: ezannoni 2000-04-13 This function/command used to have a
2260 special case syntax for the rombug target (Rombug is the boot
2261 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
2262 rombug case, the user doesn't need to supply a text address,
2263 instead a call to target_link() (in target.c) would supply the
2264 value to use. We are now discontinuing this type of ad hoc syntax. */
2267 add_symbol_file_command (char *args
, int from_tty
)
2269 struct gdbarch
*gdbarch
= get_current_arch ();
2270 char *filename
= NULL
;
2271 int flags
= OBJF_USERLOADED
;
2273 int section_index
= 0;
2277 int expecting_sec_name
= 0;
2278 int expecting_sec_addr
= 0;
2287 struct section_addr_info
*section_addrs
;
2288 struct sect_opt
*sect_opts
= NULL
;
2289 size_t num_sect_opts
= 0;
2290 struct cleanup
*my_cleanups
= make_cleanup (null_cleanup
, NULL
);
2293 sect_opts
= (struct sect_opt
*) xmalloc (num_sect_opts
2294 * sizeof (struct sect_opt
));
2299 error (_("add-symbol-file takes a file name and an address"));
2301 argv
= gdb_buildargv (args
);
2302 make_cleanup_freeargv (argv
);
2304 for (arg
= argv
[0], argcnt
= 0; arg
!= NULL
; arg
= argv
[++argcnt
])
2306 /* Process the argument. */
2309 /* The first argument is the file name. */
2310 filename
= tilde_expand (arg
);
2311 make_cleanup (xfree
, filename
);
2316 /* The second argument is always the text address at which
2317 to load the program. */
2318 sect_opts
[section_index
].name
= ".text";
2319 sect_opts
[section_index
].value
= arg
;
2320 if (++section_index
>= num_sect_opts
)
2323 sect_opts
= ((struct sect_opt
*)
2324 xrealloc (sect_opts
,
2326 * sizeof (struct sect_opt
)));
2331 /* It's an option (starting with '-') or it's an argument
2336 if (strcmp (arg
, "-readnow") == 0)
2337 flags
|= OBJF_READNOW
;
2338 else if (strcmp (arg
, "-s") == 0)
2340 expecting_sec_name
= 1;
2341 expecting_sec_addr
= 1;
2346 if (expecting_sec_name
)
2348 sect_opts
[section_index
].name
= arg
;
2349 expecting_sec_name
= 0;
2352 if (expecting_sec_addr
)
2354 sect_opts
[section_index
].value
= arg
;
2355 expecting_sec_addr
= 0;
2356 if (++section_index
>= num_sect_opts
)
2359 sect_opts
= ((struct sect_opt
*)
2360 xrealloc (sect_opts
,
2362 * sizeof (struct sect_opt
)));
2366 error (_("USAGE: add-symbol-file <filename> <textaddress>"
2367 " [-readnow] [-s <secname> <addr>]*"));
2372 /* This command takes at least two arguments. The first one is a
2373 filename, and the second is the address where this file has been
2374 loaded. Abort now if this address hasn't been provided by the
2376 if (section_index
< 1)
2377 error (_("The address where %s has been loaded is missing"), filename
);
2379 /* Print the prompt for the query below. And save the arguments into
2380 a sect_addr_info structure to be passed around to other
2381 functions. We have to split this up into separate print
2382 statements because hex_string returns a local static
2385 printf_unfiltered (_("add symbol table from file \"%s\" at\n"), filename
);
2386 section_addrs
= alloc_section_addr_info (section_index
);
2387 make_cleanup (xfree
, section_addrs
);
2388 for (i
= 0; i
< section_index
; i
++)
2391 char *val
= sect_opts
[i
].value
;
2392 char *sec
= sect_opts
[i
].name
;
2394 addr
= parse_and_eval_address (val
);
2396 /* Here we store the section offsets in the order they were
2397 entered on the command line. */
2398 section_addrs
->other
[sec_num
].name
= sec
;
2399 section_addrs
->other
[sec_num
].addr
= addr
;
2400 printf_unfiltered ("\t%s_addr = %s\n", sec
,
2401 paddress (gdbarch
, addr
));
2404 /* The object's sections are initialized when a
2405 call is made to build_objfile_section_table (objfile).
2406 This happens in reread_symbols.
2407 At this point, we don't know what file type this is,
2408 so we can't determine what section names are valid. */
2411 if (from_tty
&& (!query ("%s", "")))
2412 error (_("Not confirmed."));
2414 symbol_file_add (filename
, from_tty
? SYMFILE_VERBOSE
: 0,
2415 section_addrs
, flags
);
2417 /* Getting new symbols may change our opinion about what is
2419 reinit_frame_cache ();
2420 do_cleanups (my_cleanups
);
2424 typedef struct objfile
*objfilep
;
2426 DEF_VEC_P (objfilep
);
2428 /* Re-read symbols if a symbol-file has changed. */
2430 reread_symbols (void)
2432 struct objfile
*objfile
;
2434 struct stat new_statbuf
;
2436 VEC (objfilep
) *new_objfiles
= NULL
;
2437 struct cleanup
*all_cleanups
;
2439 all_cleanups
= make_cleanup (VEC_cleanup (objfilep
), &new_objfiles
);
2441 /* With the addition of shared libraries, this should be modified,
2442 the load time should be saved in the partial symbol tables, since
2443 different tables may come from different source files. FIXME.
2444 This routine should then walk down each partial symbol table
2445 and see if the symbol table that it originates from has been changed. */
2447 for (objfile
= object_files
; objfile
; objfile
= objfile
->next
)
2449 /* solib-sunos.c creates one objfile with obfd. */
2450 if (objfile
->obfd
== NULL
)
2453 /* Separate debug objfiles are handled in the main objfile. */
2454 if (objfile
->separate_debug_objfile_backlink
)
2457 /* If this object is from an archive (what you usually create with
2458 `ar', often called a `static library' on most systems, though
2459 a `shared library' on AIX is also an archive), then you should
2460 stat on the archive name, not member name. */
2461 if (objfile
->obfd
->my_archive
)
2462 res
= stat (objfile
->obfd
->my_archive
->filename
, &new_statbuf
);
2464 res
= stat (objfile
->name
, &new_statbuf
);
2467 /* FIXME, should use print_sys_errmsg but it's not filtered. */
2468 printf_unfiltered (_("`%s' has disappeared; keeping its symbols.\n"),
2472 new_modtime
= new_statbuf
.st_mtime
;
2473 if (new_modtime
!= objfile
->mtime
)
2475 struct cleanup
*old_cleanups
;
2476 struct section_offsets
*offsets
;
2478 char *obfd_filename
;
2480 printf_unfiltered (_("`%s' has changed; re-reading symbols.\n"),
2483 /* There are various functions like symbol_file_add,
2484 symfile_bfd_open, syms_from_objfile, etc., which might
2485 appear to do what we want. But they have various other
2486 effects which we *don't* want. So we just do stuff
2487 ourselves. We don't worry about mapped files (for one thing,
2488 any mapped file will be out of date). */
2490 /* If we get an error, blow away this objfile (not sure if
2491 that is the correct response for things like shared
2493 old_cleanups
= make_cleanup_free_objfile (objfile
);
2494 /* We need to do this whenever any symbols go away. */
2495 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
2497 if (exec_bfd
!= NULL
2498 && filename_cmp (bfd_get_filename (objfile
->obfd
),
2499 bfd_get_filename (exec_bfd
)) == 0)
2501 /* Reload EXEC_BFD without asking anything. */
2503 exec_file_attach (bfd_get_filename (objfile
->obfd
), 0);
2506 /* Keep the calls order approx. the same as in free_objfile. */
2508 /* Free the separate debug objfiles. It will be
2509 automatically recreated by sym_read. */
2510 free_objfile_separate_debug (objfile
);
2512 /* Remove any references to this objfile in the global
2514 preserve_values (objfile
);
2516 /* Nuke all the state that we will re-read. Much of the following
2517 code which sets things to NULL really is necessary to tell
2518 other parts of GDB that there is nothing currently there.
2520 Try to keep the freeing order compatible with free_objfile. */
2522 if (objfile
->sf
!= NULL
)
2524 (*objfile
->sf
->sym_finish
) (objfile
);
2527 clear_objfile_data (objfile
);
2529 /* Clean up any state BFD has sitting around. */
2531 struct bfd
*obfd
= objfile
->obfd
;
2533 obfd_filename
= bfd_get_filename (objfile
->obfd
);
2534 /* Open the new BFD before freeing the old one, so that
2535 the filename remains live. */
2536 objfile
->obfd
= gdb_bfd_open_maybe_remote (obfd_filename
);
2537 if (objfile
->obfd
== NULL
)
2539 /* We have to make a cleanup and error here, rather
2540 than erroring later, because once we unref OBFD,
2541 OBFD_FILENAME will be freed. */
2542 make_cleanup_bfd_unref (obfd
);
2543 error (_("Can't open %s to read symbols."), obfd_filename
);
2545 gdb_bfd_unref (obfd
);
2548 objfile
->name
= bfd_get_filename (objfile
->obfd
);
2549 /* bfd_openr sets cacheable to true, which is what we want. */
2550 if (!bfd_check_format (objfile
->obfd
, bfd_object
))
2551 error (_("Can't read symbols from %s: %s."), objfile
->name
,
2552 bfd_errmsg (bfd_get_error ()));
2554 /* Save the offsets, we will nuke them with the rest of the
2556 num_offsets
= objfile
->num_sections
;
2557 offsets
= ((struct section_offsets
*)
2558 alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets
)));
2559 memcpy (offsets
, objfile
->section_offsets
,
2560 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2562 /* FIXME: Do we have to free a whole linked list, or is this
2564 if (objfile
->global_psymbols
.list
)
2565 xfree (objfile
->global_psymbols
.list
);
2566 memset (&objfile
->global_psymbols
, 0,
2567 sizeof (objfile
->global_psymbols
));
2568 if (objfile
->static_psymbols
.list
)
2569 xfree (objfile
->static_psymbols
.list
);
2570 memset (&objfile
->static_psymbols
, 0,
2571 sizeof (objfile
->static_psymbols
));
2573 /* Free the obstacks for non-reusable objfiles. */
2574 psymbol_bcache_free (objfile
->psymbol_cache
);
2575 objfile
->psymbol_cache
= psymbol_bcache_init ();
2576 if (objfile
->demangled_names_hash
!= NULL
)
2578 htab_delete (objfile
->demangled_names_hash
);
2579 objfile
->demangled_names_hash
= NULL
;
2581 obstack_free (&objfile
->objfile_obstack
, 0);
2582 objfile
->sections
= NULL
;
2583 objfile
->symtabs
= NULL
;
2584 objfile
->psymtabs
= NULL
;
2585 objfile
->psymtabs_addrmap
= NULL
;
2586 objfile
->free_psymtabs
= NULL
;
2587 objfile
->template_symbols
= NULL
;
2588 objfile
->msymbols
= NULL
;
2589 objfile
->minimal_symbol_count
= 0;
2590 memset (&objfile
->msymbol_hash
, 0,
2591 sizeof (objfile
->msymbol_hash
));
2592 memset (&objfile
->msymbol_demangled_hash
, 0,
2593 sizeof (objfile
->msymbol_demangled_hash
));
2595 set_objfile_per_bfd (objfile
);
2597 /* obstack_init also initializes the obstack so it is
2598 empty. We could use obstack_specify_allocation but
2599 gdb_obstack.h specifies the alloc/dealloc functions. */
2600 obstack_init (&objfile
->objfile_obstack
);
2601 build_objfile_section_table (objfile
);
2602 terminate_minimal_symbol_table (objfile
);
2604 /* We use the same section offsets as from last time. I'm not
2605 sure whether that is always correct for shared libraries. */
2606 objfile
->section_offsets
= (struct section_offsets
*)
2607 obstack_alloc (&objfile
->objfile_obstack
,
2608 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2609 memcpy (objfile
->section_offsets
, offsets
,
2610 SIZEOF_N_SECTION_OFFSETS (num_offsets
));
2611 objfile
->num_sections
= num_offsets
;
2613 /* What the hell is sym_new_init for, anyway? The concept of
2614 distinguishing between the main file and additional files
2615 in this way seems rather dubious. */
2616 if (objfile
== symfile_objfile
)
2618 (*objfile
->sf
->sym_new_init
) (objfile
);
2621 (*objfile
->sf
->sym_init
) (objfile
);
2622 clear_complaints (&symfile_complaints
, 1, 1);
2624 objfile
->flags
&= ~OBJF_PSYMTABS_READ
;
2625 read_symbols (objfile
, 0);
2627 if (!objfile_has_symbols (objfile
))
2630 printf_unfiltered (_("(no debugging symbols found)\n"));
2634 /* We're done reading the symbol file; finish off complaints. */
2635 clear_complaints (&symfile_complaints
, 0, 1);
2637 /* Getting new symbols may change our opinion about what is
2640 reinit_frame_cache ();
2642 /* Discard cleanups as symbol reading was successful. */
2643 discard_cleanups (old_cleanups
);
2645 /* If the mtime has changed between the time we set new_modtime
2646 and now, we *want* this to be out of date, so don't call stat
2648 objfile
->mtime
= new_modtime
;
2649 init_entry_point_info (objfile
);
2651 VEC_safe_push (objfilep
, new_objfiles
, objfile
);
2659 /* Notify objfiles that we've modified objfile sections. */
2660 objfiles_changed ();
2662 clear_symtab_users (0);
2664 /* clear_objfile_data for each objfile was called before freeing it and
2665 observer_notify_new_objfile (NULL) has been called by
2666 clear_symtab_users above. Notify the new files now. */
2667 for (ix
= 0; VEC_iterate (objfilep
, new_objfiles
, ix
, objfile
); ix
++)
2668 observer_notify_new_objfile (objfile
);
2670 /* At least one objfile has changed, so we can consider that
2671 the executable we're debugging has changed too. */
2672 observer_notify_executable_changed ();
2675 do_cleanups (all_cleanups
);
2687 static filename_language
*filename_language_table
;
2688 static int fl_table_size
, fl_table_next
;
2691 add_filename_language (char *ext
, enum language lang
)
2693 if (fl_table_next
>= fl_table_size
)
2695 fl_table_size
+= 10;
2696 filename_language_table
=
2697 xrealloc (filename_language_table
,
2698 fl_table_size
* sizeof (*filename_language_table
));
2701 filename_language_table
[fl_table_next
].ext
= xstrdup (ext
);
2702 filename_language_table
[fl_table_next
].lang
= lang
;
2706 static char *ext_args
;
2708 show_ext_args (struct ui_file
*file
, int from_tty
,
2709 struct cmd_list_element
*c
, const char *value
)
2711 fprintf_filtered (file
,
2712 _("Mapping between filename extension "
2713 "and source language is \"%s\".\n"),
2718 set_ext_lang_command (char *args
, int from_tty
, struct cmd_list_element
*e
)
2721 char *cp
= ext_args
;
2724 /* First arg is filename extension, starting with '.' */
2726 error (_("'%s': Filename extension must begin with '.'"), ext_args
);
2728 /* Find end of first arg. */
2729 while (*cp
&& !isspace (*cp
))
2733 error (_("'%s': two arguments required -- "
2734 "filename extension and language"),
2737 /* Null-terminate first arg. */
2740 /* Find beginning of second arg, which should be a source language. */
2741 while (*cp
&& isspace (*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
);