1 /* Generic symbol file reading for the GNU debugger, GDB.
2 Copyright 1990-1996, 1998, 2000 Free Software Foundation, Inc.
3 Contributed by Cygnus Support, using pieces from other GDB modules.
5 This file is part of GDB.
7 This program is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2 of the License, or
10 (at your option) any later version.
12 This program is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with this program; if not, write to the Free Software
19 Foundation, Inc., 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
32 #include "breakpoint.h"
34 #include "complaints.h"
36 #include "inferior.h" /* for write_pc */
37 #include "gdb-stabs.h"
41 #include <sys/types.h>
43 #include "gdb_string.h"
54 /* Some HP-UX related globals to clear when a new "main"
55 symbol file is loaded. HP-specific. */
57 extern int hp_som_som_object_present
;
58 extern int hp_cxx_exception_support_initialized
;
59 #define RESET_HP_UX_GLOBALS() do {\
60 hp_som_som_object_present = 0; /* indicates HP-compiled code */ \
61 hp_cxx_exception_support_initialized = 0; /* must reinitialize exception stuff */ \
65 int (*ui_load_progress_hook
) (const char *section
, unsigned long num
);
66 void (*show_load_progress
) (const char *section
,
67 unsigned long section_sent
,
68 unsigned long section_size
,
69 unsigned long total_sent
,
70 unsigned long total_size
);
71 void (*pre_add_symbol_hook
) (char *);
72 void (*post_add_symbol_hook
) (void);
73 void (*target_new_objfile_hook
) (struct objfile
*);
75 static void clear_symtab_users_cleanup (void *ignore
);
77 /* Global variables owned by this file */
78 int readnow_symbol_files
; /* Read full symbols immediately */
80 struct complaint oldsyms_complaint
=
82 "Replacing old symbols for `%s'", 0, 0
85 struct complaint empty_symtab_complaint
=
87 "Empty symbol table found for `%s'", 0, 0
90 struct complaint unknown_option_complaint
=
92 "Unknown option `%s' ignored", 0, 0
95 /* External variables and functions referenced. */
97 extern int info_verbose
;
99 extern void report_transfer_performance (unsigned long, time_t, time_t);
101 /* Functions this file defines */
104 static int simple_read_overlay_region_table (void);
105 static void simple_free_overlay_region_table (void);
108 static void set_initial_language (void);
110 static void load_command (char *, int);
112 static void add_symbol_file_command (char *, int);
114 static void add_shared_symbol_files_command (char *, int);
116 static void cashier_psymtab (struct partial_symtab
*);
118 static int compare_psymbols (const void *, const void *);
120 static int compare_symbols (const void *, const void *);
122 bfd
*symfile_bfd_open (char *);
124 static void find_sym_fns (struct objfile
*);
126 static void decrement_reading_symtab (void *);
128 static void overlay_invalidate_all (void);
130 static int overlay_is_mapped (struct obj_section
*);
132 void list_overlays_command (char *, int);
134 void map_overlay_command (char *, int);
136 void unmap_overlay_command (char *, int);
138 static void overlay_auto_command (char *, int);
140 static void overlay_manual_command (char *, int);
142 static void overlay_off_command (char *, int);
144 static void overlay_load_command (char *, int);
146 static void overlay_command (char *, int);
148 static void simple_free_overlay_table (void);
150 static void read_target_long_array (CORE_ADDR
, unsigned int *, int);
152 static int simple_read_overlay_table (void);
154 static int simple_overlay_update_1 (struct obj_section
*);
156 static void add_filename_language (char *ext
, enum language lang
);
158 static void set_ext_lang_command (char *args
, int from_tty
);
160 static void info_ext_lang_command (char *args
, int from_tty
);
162 static void init_filename_language_table (void);
164 void _initialize_symfile (void);
166 /* List of all available sym_fns. On gdb startup, each object file reader
167 calls add_symtab_fns() to register information on each format it is
170 static struct sym_fns
*symtab_fns
= NULL
;
172 /* Flag for whether user will be reloading symbols multiple times.
173 Defaults to ON for VxWorks, otherwise OFF. */
175 #ifdef SYMBOL_RELOADING_DEFAULT
176 int symbol_reloading
= SYMBOL_RELOADING_DEFAULT
;
178 int symbol_reloading
= 0;
181 /* If non-zero, then on HP-UX (i.e., platforms that use somsolib.c),
182 this variable is interpreted as a threshhold. If adding a new
183 library's symbol table to those already known to the debugger would
184 exceed this threshhold, then the shlib's symbols are not added.
186 If non-zero on other platforms, shared library symbols will be added
187 automatically when the inferior is created, new libraries are loaded,
188 or when attaching to the inferior. This is almost always what users
189 will want to have happen; but for very large programs, the startup
190 time will be excessive, and so if this is a problem, the user can
191 clear this flag and then add the shared library symbols as needed.
192 Note that there is a potential for confusion, since if the shared
193 library symbols are not loaded, commands like "info fun" will *not*
194 report all the functions that are actually present.
196 Note that HP-UX interprets this variable to mean, "threshhold size
197 in megabytes, where zero means never add". Other platforms interpret
198 this variable to mean, "always add if non-zero, never add if zero."
201 int auto_solib_add
= 1;
204 /* Since this function is called from within qsort, in an ANSI environment
205 it must conform to the prototype for qsort, which specifies that the
206 comparison function takes two "void *" pointers. */
209 compare_symbols (s1p
, s2p
)
213 register struct symbol
**s1
, **s2
;
215 s1
= (struct symbol
**) s1p
;
216 s2
= (struct symbol
**) s2p
;
218 return (STRCMP (SYMBOL_NAME (*s1
), SYMBOL_NAME (*s2
)));
225 compare_psymbols -- compare two partial symbols by name
229 Given pointers to pointers to two partial symbol table entries,
230 compare them by name and return -N, 0, or +N (ala strcmp).
231 Typically used by sorting routines like qsort().
235 Does direct compare of first two characters before punting
236 and passing to strcmp for longer compares. Note that the
237 original version had a bug whereby two null strings or two
238 identically named one character strings would return the
239 comparison of memory following the null byte.
244 compare_psymbols (s1p
, s2p
)
248 register char *st1
= SYMBOL_NAME (*(struct partial_symbol
**) s1p
);
249 register char *st2
= SYMBOL_NAME (*(struct partial_symbol
**) s2p
);
251 if ((st1
[0] - st2
[0]) || !st1
[0])
253 return (st1
[0] - st2
[0]);
255 else if ((st1
[1] - st2
[1]) || !st1
[1])
257 return (st1
[1] - st2
[1]);
261 /* Note: I replaced the STRCMP line (commented out below)
262 * with a simpler "strcmp()" which compares the 2 strings
263 * from the beginning. (STRCMP is a macro which first compares
264 * the initial characters, then falls back on strcmp).
265 * The reason is that the STRCMP line was tickling a C compiler
266 * bug on HP-UX 10.30, which is avoided with the simpler
267 * code. The performance gain from the more complicated code
268 * is negligible, given that we have already checked the
269 * initial 2 characters above. I reported the compiler bug,
270 * and once it is fixed the original line can be put back. RT
272 /* return ( STRCMP (st1 + 2, st2 + 2)); */
273 return (strcmp (st1
, st2
));
278 sort_pst_symbols (pst
)
279 struct partial_symtab
*pst
;
281 /* Sort the global list; don't sort the static list */
283 qsort (pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
,
284 pst
->n_global_syms
, sizeof (struct partial_symbol
*),
288 /* Call sort_block_syms to sort alphabetically the symbols of one block. */
292 register struct block
*b
;
294 qsort (&BLOCK_SYM (b
, 0), BLOCK_NSYMS (b
),
295 sizeof (struct symbol
*), compare_symbols
);
298 /* Call sort_symtab_syms to sort alphabetically
299 the symbols of each block of one symtab. */
303 register struct symtab
*s
;
305 register struct blockvector
*bv
;
308 register struct block
*b
;
312 bv
= BLOCKVECTOR (s
);
313 nbl
= BLOCKVECTOR_NBLOCKS (bv
);
314 for (i
= 0; i
< nbl
; i
++)
316 b
= BLOCKVECTOR_BLOCK (bv
, i
);
317 if (BLOCK_SHOULD_SORT (b
))
322 /* Make a null terminated copy of the string at PTR with SIZE characters in
323 the obstack pointed to by OBSTACKP . Returns the address of the copy.
324 Note that the string at PTR does not have to be null terminated, I.E. it
325 may be part of a larger string and we are only saving a substring. */
328 obsavestring (ptr
, size
, obstackp
)
331 struct obstack
*obstackp
;
333 register char *p
= (char *) obstack_alloc (obstackp
, size
+ 1);
334 /* Open-coded memcpy--saves function call time. These strings are usually
335 short. FIXME: Is this really still true with a compiler that can
338 register char *p1
= ptr
;
339 register char *p2
= p
;
340 char *end
= ptr
+ size
;
348 /* Concatenate strings S1, S2 and S3; return the new string. Space is found
349 in the obstack pointed to by OBSTACKP. */
352 obconcat (obstackp
, s1
, s2
, s3
)
353 struct obstack
*obstackp
;
354 const char *s1
, *s2
, *s3
;
356 register int len
= strlen (s1
) + strlen (s2
) + strlen (s3
) + 1;
357 register char *val
= (char *) obstack_alloc (obstackp
, len
);
364 /* True if we are nested inside psymtab_to_symtab. */
366 int currently_reading_symtab
= 0;
369 decrement_reading_symtab (dummy
)
372 currently_reading_symtab
--;
375 /* Get the symbol table that corresponds to a partial_symtab.
376 This is fast after the first time you do it. In fact, there
377 is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
381 psymtab_to_symtab (pst
)
382 register struct partial_symtab
*pst
;
384 /* If it's been looked up before, return it. */
388 /* If it has not yet been read in, read it. */
391 struct cleanup
*back_to
= make_cleanup (decrement_reading_symtab
, NULL
);
392 currently_reading_symtab
++;
393 (*pst
->read_symtab
) (pst
);
394 do_cleanups (back_to
);
400 /* Initialize entry point information for this objfile. */
403 init_entry_point_info (objfile
)
404 struct objfile
*objfile
;
406 /* Save startup file's range of PC addresses to help blockframe.c
407 decide where the bottom of the stack is. */
409 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
411 /* Executable file -- record its entry point so we'll recognize
412 the startup file because it contains the entry point. */
413 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
417 /* Examination of non-executable.o files. Short-circuit this stuff. */
418 objfile
->ei
.entry_point
= INVALID_ENTRY_POINT
;
420 objfile
->ei
.entry_file_lowpc
= INVALID_ENTRY_LOWPC
;
421 objfile
->ei
.entry_file_highpc
= INVALID_ENTRY_HIGHPC
;
422 objfile
->ei
.entry_func_lowpc
= INVALID_ENTRY_LOWPC
;
423 objfile
->ei
.entry_func_highpc
= INVALID_ENTRY_HIGHPC
;
424 objfile
->ei
.main_func_lowpc
= INVALID_ENTRY_LOWPC
;
425 objfile
->ei
.main_func_highpc
= INVALID_ENTRY_HIGHPC
;
428 /* Get current entry point address. */
431 entry_point_address ()
433 return symfile_objfile
? symfile_objfile
->ei
.entry_point
: 0;
436 /* Remember the lowest-addressed loadable section we've seen.
437 This function is called via bfd_map_over_sections.
439 In case of equal vmas, the section with the largest size becomes the
440 lowest-addressed loadable section.
442 If the vmas and sizes are equal, the last section is considered the
443 lowest-addressed loadable section. */
446 find_lowest_section (abfd
, sect
, obj
)
451 asection
**lowest
= (asection
**) obj
;
453 if (0 == (bfd_get_section_flags (abfd
, sect
) & SEC_LOAD
))
456 *lowest
= sect
; /* First loadable section */
457 else if (bfd_section_vma (abfd
, *lowest
) > bfd_section_vma (abfd
, sect
))
458 *lowest
= sect
; /* A lower loadable section */
459 else if (bfd_section_vma (abfd
, *lowest
) == bfd_section_vma (abfd
, sect
)
460 && (bfd_section_size (abfd
, (*lowest
))
461 <= bfd_section_size (abfd
, sect
)))
466 /* Build (allocate and populate) a section_addr_info struct from
467 an existing section table. */
469 extern struct section_addr_info
*
470 build_section_addr_info_from_section_table (const struct section_table
*start
,
471 const struct section_table
*end
)
473 struct section_addr_info
*sap
;
474 const struct section_table
*stp
;
477 sap
= xmalloc (sizeof (struct section_addr_info
));
478 memset (sap
, 0, sizeof (struct section_addr_info
));
480 for (stp
= start
, oidx
= 0; stp
!= end
; stp
++)
482 if (stp
->the_bfd_section
->flags
& (SEC_ALLOC
| SEC_LOAD
)
483 && oidx
< MAX_SECTIONS
)
485 sap
->other
[oidx
].addr
= stp
->addr
;
486 sap
->other
[oidx
].name
= xstrdup (stp
->the_bfd_section
->name
);
487 sap
->other
[oidx
].sectindex
= stp
->the_bfd_section
->index
;
496 /* Free all memory allocated by build_section_addr_info_from_section_table. */
499 free_section_addr_info (struct section_addr_info
*sap
)
503 for (idx
= 0; idx
< MAX_SECTIONS
; idx
++)
504 if (sap
->other
[idx
].name
)
505 free (sap
->other
[idx
].name
);
510 /* Parse the user's idea of an offset for dynamic linking, into our idea
511 of how to represent it for fast symbol reading. This is the default
512 version of the sym_fns.sym_offsets function for symbol readers that
513 don't need to do anything special. It allocates a section_offsets table
514 for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
517 default_symfile_offsets (objfile
, addrs
)
518 struct objfile
*objfile
;
519 struct section_addr_info
*addrs
;
522 asection
*sect
= NULL
;
524 objfile
->num_sections
= SECT_OFF_MAX
;
525 objfile
->section_offsets
= (struct section_offsets
*)
526 obstack_alloc (&objfile
->psymbol_obstack
, SIZEOF_SECTION_OFFSETS
);
527 memset (objfile
->section_offsets
, 0, SIZEOF_SECTION_OFFSETS
);
529 /* Now calculate offsets for section that were specified by the
531 for (i
= 0; i
< MAX_SECTIONS
&& addrs
->other
[i
].name
; i
++)
533 struct other_sections
*osp
;
535 osp
= &addrs
->other
[i
] ;
539 /* Record all sections in offsets */
540 /* The section_offsets in the objfile are here filled in using
542 ANOFFSET (objfile
->section_offsets
, osp
->sectindex
) = osp
->addr
;
545 /* Remember the bfd indexes for the .text, .data, .bss and
548 sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
550 objfile
->sect_index_text
= sect
->index
;
552 sect
= bfd_get_section_by_name (objfile
->obfd
, ".data");
554 objfile
->sect_index_data
= sect
->index
;
556 sect
= bfd_get_section_by_name (objfile
->obfd
, ".bss");
558 objfile
->sect_index_bss
= sect
->index
;
560 sect
= bfd_get_section_by_name (objfile
->obfd
, ".rodata");
562 objfile
->sect_index_rodata
= sect
->index
;
566 /* Process a symbol file, as either the main file or as a dynamically
569 OBJFILE is where the symbols are to be read from.
571 ADDR is the address where the text segment was loaded, unless the
572 objfile is the main symbol file, in which case it is zero.
574 MAINLINE is nonzero if this is the main symbol file, or zero if
575 it's an extra symbol file such as dynamically loaded code.
577 VERBO is nonzero if the caller has printed a verbose message about
578 the symbol reading (and complaints can be more terse about it). */
581 syms_from_objfile (objfile
, addrs
, mainline
, verbo
)
582 struct objfile
*objfile
;
583 struct section_addr_info
*addrs
;
587 asection
*lower_sect
;
589 CORE_ADDR lower_offset
;
590 struct section_addr_info local_addr
;
591 struct cleanup
*old_chain
;
594 /* If ADDRS is NULL, initialize the local section_addr_info struct and
595 point ADDRS to it. We now establish the convention that an addr of
596 zero means no load address was specified. */
600 memset (&local_addr
, 0, sizeof (local_addr
));
604 init_entry_point_info (objfile
);
605 find_sym_fns (objfile
);
607 /* Make sure that partially constructed symbol tables will be cleaned up
608 if an error occurs during symbol reading. */
609 old_chain
= make_cleanup_free_objfile (objfile
);
613 /* We will modify the main symbol table, make sure that all its users
614 will be cleaned up if an error occurs during symbol reading. */
615 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
617 /* Since no error yet, throw away the old symbol table. */
619 if (symfile_objfile
!= NULL
)
621 free_objfile (symfile_objfile
);
622 symfile_objfile
= NULL
;
625 /* Currently we keep symbols from the add-symbol-file command.
626 If the user wants to get rid of them, they should do "symbol-file"
627 without arguments first. Not sure this is the best behavior
630 (*objfile
->sf
->sym_new_init
) (objfile
);
633 /* Convert addr into an offset rather than an absolute address.
634 We find the lowest address of a loaded segment in the objfile,
635 and assume that <addr> is where that got loaded.
637 We no longer warn if the lowest section is not a text segment (as
638 happens for the PA64 port. */
641 /* Find lowest loadable section to be used as starting point for
642 continguous sections. FIXME!! won't work without call to find
643 .text first, but this assumes text is lowest section. */
644 lower_sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
645 if (lower_sect
== NULL
)
646 bfd_map_over_sections (objfile
->obfd
, find_lowest_section
,
648 if (lower_sect
== NULL
)
649 warning ("no loadable sections found in added symbol-file %s",
652 if ((bfd_get_section_flags (objfile
->obfd
, lower_sect
) & SEC_CODE
) == 0)
653 warning ("Lowest section in %s is %s at %s",
655 bfd_section_name (objfile
->obfd
, lower_sect
),
656 paddr (bfd_section_vma (objfile
->obfd
, lower_sect
)));
657 if (lower_sect
!= NULL
)
658 lower_offset
= bfd_section_vma (objfile
->obfd
, lower_sect
);
662 /* Calculate offsets for the loadable sections.
663 FIXME! Sections must be in order of increasing loadable section
664 so that contiguous sections can use the lower-offset!!!
666 Adjust offsets if the segments are not contiguous.
667 If the section is contiguous, its offset should be set to
668 the offset of the highest loadable section lower than it
669 (the loadable section directly below it in memory).
670 this_offset = lower_offset = lower_addr - lower_orig_addr */
672 /* Calculate offsets for sections. */
673 for (i
=0 ; i
< MAX_SECTIONS
&& addrs
->other
[i
].name
; i
++)
675 if (addrs
->other
[i
].addr
!= 0)
677 sect
= bfd_get_section_by_name (objfile
->obfd
, addrs
->other
[i
].name
);
680 addrs
->other
[i
].addr
-= bfd_section_vma (objfile
->obfd
, sect
);
681 lower_offset
= addrs
->other
[i
].addr
;
682 /* This is the index used by BFD. */
683 addrs
->other
[i
].sectindex
= sect
->index
;
687 warning ("section %s not found in %s", addrs
->other
[i
].name
,
689 addrs
->other
[i
].addr
= 0;
693 addrs
->other
[i
].addr
= lower_offset
;
697 /* Initialize symbol reading routines for this objfile, allow complaints to
698 appear for this new file, and record how verbose to be, then do the
699 initial symbol reading for this file. */
701 (*objfile
->sf
->sym_init
) (objfile
);
702 clear_complaints (1, verbo
);
704 (*objfile
->sf
->sym_offsets
) (objfile
, addrs
);
706 #ifndef IBM6000_TARGET
707 /* This is a SVR4/SunOS specific hack, I think. In any event, it
708 screws RS/6000. sym_offsets should be doing this sort of thing,
709 because it knows the mapping between bfd sections and
711 /* This is a hack. As far as I can tell, section offsets are not
712 target dependent. They are all set to addr with a couple of
713 exceptions. The exceptions are sysvr4 shared libraries, whose
714 offsets are kept in solib structures anyway and rs6000 xcoff
715 which handles shared libraries in a completely unique way.
717 Section offsets are built similarly, except that they are built
718 by adding addr in all cases because there is no clear mapping
719 from section_offsets into actual sections. Note that solib.c
720 has a different algorithm for finding section offsets.
722 These should probably all be collapsed into some target
723 independent form of shared library support. FIXME. */
727 struct obj_section
*s
;
729 /* Map section offsets in "addr" back to the object's
730 sections by comparing the section names with bfd's
731 section names. Then adjust the section address by
732 the offset. */ /* for gdb/13815 */
734 ALL_OBJFILE_OSECTIONS (objfile
, s
)
736 CORE_ADDR s_addr
= 0;
740 !s_addr
&& i
< MAX_SECTIONS
&& addrs
->other
[i
].name
;
742 if (strcmp (s
->the_bfd_section
->name
, addrs
->other
[i
].name
) == 0)
743 s_addr
= addrs
->other
[i
].addr
; /* end added for gdb/13815 */
745 s
->addr
-= s
->offset
;
747 s
->endaddr
-= s
->offset
;
748 s
->endaddr
+= s_addr
;
752 #endif /* not IBM6000_TARGET */
754 (*objfile
->sf
->sym_read
) (objfile
, mainline
);
756 if (!have_partial_symbols () && !have_full_symbols ())
759 printf_filtered ("(no debugging symbols found)...");
763 /* Don't allow char * to have a typename (else would get caddr_t).
764 Ditto void *. FIXME: Check whether this is now done by all the
765 symbol readers themselves (many of them now do), and if so remove
768 TYPE_NAME (lookup_pointer_type (builtin_type_char
)) = 0;
769 TYPE_NAME (lookup_pointer_type (builtin_type_void
)) = 0;
771 /* Mark the objfile has having had initial symbol read attempted. Note
772 that this does not mean we found any symbols... */
774 objfile
->flags
|= OBJF_SYMS
;
776 /* Discard cleanups as symbol reading was successful. */
778 discard_cleanups (old_chain
);
780 /* Call this after reading in a new symbol table to give target
781 dependant code a crack at the new symbols. For instance, this
782 could be used to update the values of target-specific symbols GDB
783 needs to keep track of (such as _sigtramp, or whatever). */
785 TARGET_SYMFILE_POSTREAD (objfile
);
788 /* Perform required actions after either reading in the initial
789 symbols for a new objfile, or mapping in the symbols from a reusable
793 new_symfile_objfile (objfile
, mainline
, verbo
)
794 struct objfile
*objfile
;
799 /* If this is the main symbol file we have to clean up all users of the
800 old main symbol file. Otherwise it is sufficient to fixup all the
801 breakpoints that may have been redefined by this symbol file. */
804 /* OK, make it the "real" symbol file. */
805 symfile_objfile
= objfile
;
807 clear_symtab_users ();
811 breakpoint_re_set ();
814 /* We're done reading the symbol file; finish off complaints. */
815 clear_complaints (0, verbo
);
818 /* Process a symbol file, as either the main file or as a dynamically
821 NAME is the file name (which will be tilde-expanded and made
822 absolute herein) (but we don't free or modify NAME itself).
823 FROM_TTY says how verbose to be. MAINLINE specifies whether this
824 is the main symbol file, or whether it's an extra symbol file such
825 as dynamically loaded code. If !mainline, ADDR is the address
826 where the text segment was loaded.
828 Upon success, returns a pointer to the objfile that was added.
829 Upon failure, jumps back to command level (never returns). */
832 symbol_file_add (name
, from_tty
, addrs
, mainline
, flags
)
835 struct section_addr_info
*addrs
;
839 struct objfile
*objfile
;
840 struct partial_symtab
*psymtab
;
843 /* Open a bfd for the file, and give user a chance to burp if we'd be
844 interactively wiping out any existing symbols. */
846 abfd
= symfile_bfd_open (name
);
848 if ((have_full_symbols () || have_partial_symbols ())
851 && !query ("Load new symbol table from \"%s\"? ", name
))
852 error ("Not confirmed.");
854 objfile
= allocate_objfile (abfd
, flags
);
856 /* If the objfile uses a mapped symbol file, and we have a psymtab for
857 it, then skip reading any symbols at this time. */
859 if ((objfile
->flags
& OBJF_MAPPED
) && (objfile
->flags
& OBJF_SYMS
))
861 /* We mapped in an existing symbol table file that already has had
862 initial symbol reading performed, so we can skip that part. Notify
863 the user that instead of reading the symbols, they have been mapped.
865 if (from_tty
|| info_verbose
)
867 printf_filtered ("Mapped symbols for %s...", name
);
869 gdb_flush (gdb_stdout
);
871 init_entry_point_info (objfile
);
872 find_sym_fns (objfile
);
876 /* We either created a new mapped symbol table, mapped an existing
877 symbol table file which has not had initial symbol reading
878 performed, or need to read an unmapped symbol table. */
879 if (from_tty
|| info_verbose
)
881 if (pre_add_symbol_hook
)
882 pre_add_symbol_hook (name
);
885 printf_filtered ("Reading symbols from %s...", name
);
887 gdb_flush (gdb_stdout
);
890 syms_from_objfile (objfile
, addrs
, mainline
, from_tty
);
893 /* We now have at least a partial symbol table. Check to see if the
894 user requested that all symbols be read on initial access via either
895 the gdb startup command line or on a per symbol file basis. Expand
896 all partial symbol tables for this objfile if so. */
898 if ((flags
& OBJF_READNOW
) || readnow_symbol_files
)
900 if (from_tty
|| info_verbose
)
902 printf_filtered ("expanding to full symbols...");
904 gdb_flush (gdb_stdout
);
907 for (psymtab
= objfile
->psymtabs
;
909 psymtab
= psymtab
->next
)
911 psymtab_to_symtab (psymtab
);
915 if (from_tty
|| info_verbose
)
917 if (post_add_symbol_hook
)
918 post_add_symbol_hook ();
921 printf_filtered ("done.\n");
922 gdb_flush (gdb_stdout
);
926 new_symfile_objfile (objfile
, mainline
, from_tty
);
928 if (target_new_objfile_hook
)
929 target_new_objfile_hook (objfile
);
934 /* This is the symbol-file command. Read the file, analyze its
935 symbols, and add a struct symtab to a symtab list. The syntax of
936 the command is rather bizarre--(1) buildargv implements various
937 quoting conventions which are undocumented and have little or
938 nothing in common with the way things are quoted (or not quoted)
939 elsewhere in GDB, (2) options are used, which are not generally
940 used in GDB (perhaps "set mapped on", "set readnow on" would be
941 better), (3) the order of options matters, which is contrary to GNU
942 conventions (because it is confusing and inconvenient). */
943 /* Note: ezannoni 2000-04-17. This function used to have support for
944 rombug (see remote-os9k.c). It consisted of a call to target_link()
945 (target.c) to get the address of the text segment from the target,
946 and pass that to symbol_file_add(). This is no longer supported. */
949 symbol_file_command (args
, from_tty
)
955 struct cleanup
*cleanups
;
956 int flags
= OBJF_USERLOADED
;
962 if ((have_full_symbols () || have_partial_symbols ())
964 && !query ("Discard symbol table from `%s'? ",
965 symfile_objfile
->name
))
966 error ("Not confirmed.");
967 free_all_objfiles ();
969 /* solib descriptors may have handles to objfiles. Since their
970 storage has just been released, we'd better wipe the solib
973 #if defined(SOLIB_RESTART)
977 symfile_objfile
= NULL
;
979 printf_unfiltered ("No symbol file now.\n");
981 RESET_HP_UX_GLOBALS ();
986 if ((argv
= buildargv (args
)) == NULL
)
990 cleanups
= make_cleanup_freeargv (argv
);
991 while (*argv
!= NULL
)
993 if (STREQ (*argv
, "-mapped"))
994 flags
|= OBJF_MAPPED
;
996 if (STREQ (*argv
, "-readnow"))
997 flags
|= OBJF_READNOW
;
1000 error ("unknown option `%s'", *argv
);
1004 symbol_file_add (name
, from_tty
, NULL
, 1, flags
);
1006 RESET_HP_UX_GLOBALS ();
1008 /* Getting new symbols may change our opinion about
1009 what is frameless. */
1010 reinit_frame_cache ();
1012 set_initial_language ();
1019 error ("no symbol file name was specified");
1021 TUIDO (((TuiOpaqueFuncPtr
) tuiDisplayMainFunction
));
1022 do_cleanups (cleanups
);
1026 /* Set the initial language.
1028 A better solution would be to record the language in the psymtab when reading
1029 partial symbols, and then use it (if known) to set the language. This would
1030 be a win for formats that encode the language in an easily discoverable place,
1031 such as DWARF. For stabs, we can jump through hoops looking for specially
1032 named symbols or try to intuit the language from the specific type of stabs
1033 we find, but we can't do that until later when we read in full symbols.
1037 set_initial_language ()
1039 struct partial_symtab
*pst
;
1040 enum language lang
= language_unknown
;
1042 pst
= find_main_psymtab ();
1045 if (pst
->filename
!= NULL
)
1047 lang
= deduce_language_from_filename (pst
->filename
);
1049 if (lang
== language_unknown
)
1051 /* Make C the default language */
1054 set_language (lang
);
1055 expected_language
= current_language
; /* Don't warn the user */
1059 /* Open file specified by NAME and hand it off to BFD for preliminary
1060 analysis. Result is a newly initialized bfd *, which includes a newly
1061 malloc'd` copy of NAME (tilde-expanded and made absolute).
1062 In case of trouble, error() is called. */
1065 symfile_bfd_open (name
)
1070 char *absolute_name
;
1074 name
= tilde_expand (name
); /* Returns 1st new malloc'd copy */
1076 /* Look down path for it, allocate 2nd new malloc'd copy. */
1077 desc
= openp (getenv ("PATH"), 1, name
, O_RDONLY
| O_BINARY
, 0, &absolute_name
);
1078 #if defined(__GO32__) || defined(_WIN32)
1081 char *exename
= alloca (strlen (name
) + 5);
1082 strcat (strcpy (exename
, name
), ".exe");
1083 desc
= openp (getenv ("PATH"), 1, exename
, O_RDONLY
| O_BINARY
,
1089 make_cleanup (free
, name
);
1090 perror_with_name (name
);
1092 free (name
); /* Free 1st new malloc'd copy */
1093 name
= absolute_name
; /* Keep 2nd malloc'd copy in bfd */
1094 /* It'll be freed in free_objfile(). */
1096 sym_bfd
= bfd_fdopenr (name
, gnutarget
, desc
);
1100 make_cleanup (free
, name
);
1101 error ("\"%s\": can't open to read symbols: %s.", name
,
1102 bfd_errmsg (bfd_get_error ()));
1104 sym_bfd
->cacheable
= true;
1106 if (!bfd_check_format (sym_bfd
, bfd_object
))
1108 /* FIXME: should be checking for errors from bfd_close (for one thing,
1109 on error it does not free all the storage associated with the
1111 bfd_close (sym_bfd
); /* This also closes desc */
1112 make_cleanup (free
, name
);
1113 error ("\"%s\": can't read symbols: %s.", name
,
1114 bfd_errmsg (bfd_get_error ()));
1119 /* Link a new symtab_fns into the global symtab_fns list. Called on gdb
1120 startup by the _initialize routine in each object file format reader,
1121 to register information about each format the the reader is prepared
1128 sf
->next
= symtab_fns
;
1133 /* Initialize to read symbols from the symbol file sym_bfd. It either
1134 returns or calls error(). The result is an initialized struct sym_fns
1135 in the objfile structure, that contains cached information about the
1139 find_sym_fns (objfile
)
1140 struct objfile
*objfile
;
1143 enum bfd_flavour our_flavour
= bfd_get_flavour (objfile
->obfd
);
1144 char *our_target
= bfd_get_target (objfile
->obfd
);
1146 /* Special kludge for apollo. See dstread.c. */
1147 if (STREQN (our_target
, "apollo", 6))
1148 our_flavour
= (enum bfd_flavour
) -2;
1150 for (sf
= symtab_fns
; sf
!= NULL
; sf
= sf
->next
)
1152 if (our_flavour
== sf
->sym_flavour
)
1158 error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.",
1159 bfd_get_target (objfile
->obfd
));
1162 /* This function runs the load command of our current target. */
1165 load_command (arg
, from_tty
)
1170 arg
= get_exec_file (1);
1171 target_load (arg
, from_tty
);
1174 /* This version of "load" should be usable for any target. Currently
1175 it is just used for remote targets, not inftarg.c or core files,
1176 on the theory that only in that case is it useful.
1178 Avoiding xmodem and the like seems like a win (a) because we don't have
1179 to worry about finding it, and (b) On VMS, fork() is very slow and so
1180 we don't want to run a subprocess. On the other hand, I'm not sure how
1181 performance compares. */
1183 static int download_write_size
= 512;
1184 static int validate_download
= 0;
1187 generic_load (char *args
, int from_tty
)
1191 time_t start_time
, end_time
; /* Start and end times of download */
1192 unsigned long data_count
= 0; /* Number of bytes transferred to memory */
1193 unsigned long write_count
= 0; /* Number of writes needed. */
1194 unsigned long load_offset
; /* offset to add to vma for each section */
1196 struct cleanup
*old_cleanups
;
1198 CORE_ADDR total_size
= 0;
1199 CORE_ADDR total_sent
= 0;
1201 /* Parse the input argument - the user can specify a load offset as
1202 a second argument. */
1203 filename
= xmalloc (strlen (args
) + 1);
1204 old_cleanups
= make_cleanup (free
, filename
);
1205 strcpy (filename
, args
);
1206 offptr
= strchr (filename
, ' ');
1210 load_offset
= strtoul (offptr
, &endptr
, 0);
1211 if (offptr
== endptr
)
1212 error ("Invalid download offset:%s\n", offptr
);
1218 /* Open the file for loading. */
1219 loadfile_bfd
= bfd_openr (filename
, gnutarget
);
1220 if (loadfile_bfd
== NULL
)
1222 perror_with_name (filename
);
1226 /* FIXME: should be checking for errors from bfd_close (for one thing,
1227 on error it does not free all the storage associated with the
1229 make_cleanup_bfd_close (loadfile_bfd
);
1231 if (!bfd_check_format (loadfile_bfd
, bfd_object
))
1233 error ("\"%s\" is not an object file: %s", filename
,
1234 bfd_errmsg (bfd_get_error ()));
1237 for (s
= loadfile_bfd
->sections
; s
; s
= s
->next
)
1238 if (s
->flags
& SEC_LOAD
)
1239 total_size
+= bfd_get_section_size_before_reloc (s
);
1241 start_time
= time (NULL
);
1243 for (s
= loadfile_bfd
->sections
; s
; s
= s
->next
)
1245 if (s
->flags
& SEC_LOAD
)
1247 CORE_ADDR size
= bfd_get_section_size_before_reloc (s
);
1251 struct cleanup
*old_chain
;
1252 CORE_ADDR lma
= s
->lma
+ load_offset
;
1253 CORE_ADDR block_size
;
1255 const char *sect_name
= bfd_get_section_name (loadfile_bfd
, s
);
1258 if (download_write_size
> 0 && size
> download_write_size
)
1259 block_size
= download_write_size
;
1263 buffer
= xmalloc (size
);
1264 old_chain
= make_cleanup (free
, buffer
);
1266 /* Is this really necessary? I guess it gives the user something
1267 to look at during a long download. */
1269 ui_out_message (uiout
, 0, "Loading section %s, size 0x%s lma 0x%s\n",
1270 sect_name
, paddr_nz (size
), paddr_nz (lma
));
1272 fprintf_unfiltered (gdb_stdout
,
1273 "Loading section %s, size 0x%s lma 0x%s\n",
1274 sect_name
, paddr_nz (size
), paddr_nz (lma
));
1277 bfd_get_section_contents (loadfile_bfd
, s
, buffer
, 0, size
);
1283 CORE_ADDR this_transfer
= size
- sent
;
1284 if (this_transfer
>= block_size
)
1285 this_transfer
= block_size
;
1286 len
= target_write_memory_partial (lma
, buffer
,
1287 this_transfer
, &err
);
1290 if (validate_download
)
1292 /* Broken memories and broken monitors manifest
1293 themselves here when bring new computers to
1294 life. This doubles already slow downloads. */
1295 /* NOTE: cagney/1999-10-18: A more efficient
1296 implementation might add a verify_memory()
1297 method to the target vector and then use
1298 that. remote.c could implement that method
1299 using the ``qCRC'' packet. */
1300 char *check
= xmalloc (len
);
1301 struct cleanup
*verify_cleanups
= make_cleanup (free
, check
);
1302 if (target_read_memory (lma
, check
, len
) != 0)
1303 error ("Download verify read failed at 0x%s",
1305 if (memcmp (buffer
, check
, len
) != 0)
1306 error ("Download verify compare failed at 0x%s",
1308 do_cleanups (verify_cleanups
);
1317 || (ui_load_progress_hook
!= NULL
1318 && ui_load_progress_hook (sect_name
, sent
)))
1319 error ("Canceled the download");
1321 if (show_load_progress
!= NULL
)
1322 show_load_progress (sect_name
, sent
, size
, total_sent
, total_size
);
1324 while (sent
< size
);
1327 error ("Memory access error while loading section %s.", sect_name
);
1329 do_cleanups (old_chain
);
1334 end_time
= time (NULL
);
1337 entry
= bfd_get_start_address (loadfile_bfd
);
1339 ui_out_text (uiout
, "Start address ");
1340 ui_out_field_fmt (uiout
, "address", "0x%s" , paddr_nz (entry
));
1341 ui_out_text (uiout
, ", load size ");
1342 ui_out_field_fmt (uiout
, "load-size", "%ld" , data_count
);
1343 ui_out_text (uiout
, "\n");
1346 fprintf_unfiltered (gdb_stdout
,
1347 "Start address 0x%s , load size %ld\n",
1348 paddr_nz (entry
), data_count
);
1350 /* We were doing this in remote-mips.c, I suspect it is right
1351 for other targets too. */
1355 /* FIXME: are we supposed to call symbol_file_add or not? According to
1356 a comment from remote-mips.c (where a call to symbol_file_add was
1357 commented out), making the call confuses GDB if more than one file is
1358 loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c
1361 print_transfer_performance (gdb_stdout
, data_count
, write_count
,
1362 end_time
- start_time
);
1364 do_cleanups (old_cleanups
);
1367 /* Report how fast the transfer went. */
1369 /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being
1370 replaced by print_transfer_performance (with a very different
1371 function signature). */
1374 report_transfer_performance (data_count
, start_time
, end_time
)
1375 unsigned long data_count
;
1376 time_t start_time
, end_time
;
1378 print_transfer_performance (gdb_stdout
, data_count
, end_time
- start_time
, 0);
1382 print_transfer_performance (struct ui_file
*stream
,
1383 unsigned long data_count
,
1384 unsigned long write_count
,
1385 unsigned long time_count
)
1388 ui_out_text (uiout
, "Transfer rate: ");
1391 ui_out_field_fmt (uiout
, "transfer-rate", "%ld",
1392 (data_count
* 8) / time_count
);
1393 ui_out_text (uiout
, " bits/sec");
1397 ui_out_field_fmt (uiout
, "transferred-bits", "%ld", (data_count
* 8));
1398 ui_out_text (uiout
, " bits in <1 sec");
1400 if (write_count
> 0)
1402 ui_out_text (uiout
, ", ");
1403 ui_out_field_fmt (uiout
, "write-rate", "%ld", data_count
/ write_count
);
1404 ui_out_text (uiout
, " bytes/write");
1406 ui_out_text (uiout
, ".\n");
1408 fprintf_unfiltered (stream
, "Transfer rate: ");
1410 fprintf_unfiltered (stream
, "%ld bits/sec", (data_count
* 8) / time_count
);
1412 fprintf_unfiltered (stream
, "%ld bits in <1 sec", (data_count
* 8));
1413 if (write_count
> 0)
1414 fprintf_unfiltered (stream
, ", %ld bytes/write", data_count
/ write_count
);
1415 fprintf_unfiltered (stream
, ".\n");
1419 /* This function allows the addition of incrementally linked object files.
1420 It does not modify any state in the target, only in the debugger. */
1421 /* Note: ezannoni 2000-04-13 This function/command used to have a
1422 special case syntax for the rombug target (Rombug is the boot
1423 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
1424 rombug case, the user doesn't need to supply a text address,
1425 instead a call to target_link() (in target.c) would supply the
1426 value to use. We are now discontinuing this type of ad hoc syntax. */
1430 add_symbol_file_command (args
, from_tty
)
1434 char *filename
= NULL
;
1435 int flags
= OBJF_USERLOADED
;
1437 int expecting_option
= 0;
1438 int section_index
= 0;
1442 int expecting_sec_name
= 0;
1443 int expecting_sec_addr
= 0;
1449 } sect_opts
[SECT_OFF_MAX
];
1451 struct section_addr_info section_addrs
;
1452 struct cleanup
*my_cleanups
;
1457 error ("add-symbol-file takes a file name and an address");
1459 /* Make a copy of the string that we can safely write into. */
1460 args
= xstrdup (args
);
1462 /* Ensure section_addrs is initialized */
1463 memset (§ion_addrs
, 0, sizeof (section_addrs
));
1465 while (*args
!= '\000')
1467 /* Any leading spaces? */
1468 while (isspace (*args
))
1471 /* Point arg to the beginning of the argument. */
1474 /* Move args pointer over the argument. */
1475 while ((*args
!= '\000') && !isspace (*args
))
1478 /* If there are more arguments, terminate arg and
1480 if (*args
!= '\000')
1483 /* Now process the argument. */
1486 /* The first argument is the file name. */
1487 filename
= tilde_expand (arg
);
1488 my_cleanups
= make_cleanup (free
, filename
);
1493 /* The second argument is always the text address at which
1494 to load the program. */
1495 sect_opts
[section_index
].name
= ".text";
1496 sect_opts
[section_index
].value
= arg
;
1501 /* It's an option (starting with '-') or it's an argument
1506 if (strcmp (arg
, "-mapped") == 0)
1507 flags
|= OBJF_MAPPED
;
1509 if (strcmp (arg
, "-readnow") == 0)
1510 flags
|= OBJF_READNOW
;
1512 if (strcmp (arg
, "-s") == 0)
1514 if (section_index
>= SECT_OFF_MAX
)
1515 error ("Too many sections specified.");
1516 expecting_sec_name
= 1;
1517 expecting_sec_addr
= 1;
1522 if (expecting_sec_name
)
1524 sect_opts
[section_index
].name
= arg
;
1525 expecting_sec_name
= 0;
1528 if (expecting_sec_addr
)
1530 sect_opts
[section_index
].value
= arg
;
1531 expecting_sec_addr
= 0;
1535 error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*");
1541 /* Print the prompt for the query below. And save the arguments into
1542 a sect_addr_info structure to be passed around to other
1543 functions. We have to split this up into separate print
1544 statements because local_hex_string returns a local static
1547 printf_filtered ("add symbol table from file \"%s\" at\n", filename
);
1548 for (i
= 0; i
< section_index
; i
++)
1551 char *val
= sect_opts
[i
].value
;
1552 char *sec
= sect_opts
[i
].name
;
1554 val
= sect_opts
[i
].value
;
1555 if (val
[0] == '0' && val
[1] == 'x')
1556 addr
= strtoul (val
+2, NULL
, 16);
1558 addr
= strtoul (val
, NULL
, 10);
1560 /* Here we store the section offsets in the order they were
1561 entered on the command line. */
1562 section_addrs
.other
[sec_num
].name
= sec
;
1563 section_addrs
.other
[sec_num
].addr
= addr
;
1564 printf_filtered ("\t%s_addr = %s\n",
1566 local_hex_string ((unsigned long)addr
));
1569 /* The object's sections are initialized when a
1570 call is made to build_objfile_section_table (objfile).
1571 This happens in reread_symbols.
1572 At this point, we don't know what file type this is,
1573 so we can't determine what section names are valid. */
1576 if (from_tty
&& (!query ("%s", "")))
1577 error ("Not confirmed.");
1579 symbol_file_add (filename
, from_tty
, §ion_addrs
, 0, flags
);
1581 /* Getting new symbols may change our opinion about what is
1583 reinit_frame_cache ();
1584 do_cleanups (my_cleanups
);
1588 add_shared_symbol_files_command (args
, from_tty
)
1592 #ifdef ADD_SHARED_SYMBOL_FILES
1593 ADD_SHARED_SYMBOL_FILES (args
, from_tty
);
1595 error ("This command is not available in this configuration of GDB.");
1599 /* Re-read symbols if a symbol-file has changed. */
1603 struct objfile
*objfile
;
1606 struct stat new_statbuf
;
1609 /* With the addition of shared libraries, this should be modified,
1610 the load time should be saved in the partial symbol tables, since
1611 different tables may come from different source files. FIXME.
1612 This routine should then walk down each partial symbol table
1613 and see if the symbol table that it originates from has been changed */
1615 for (objfile
= object_files
; objfile
; objfile
= objfile
->next
)
1619 #ifdef IBM6000_TARGET
1620 /* If this object is from a shared library, then you should
1621 stat on the library name, not member name. */
1623 if (objfile
->obfd
->my_archive
)
1624 res
= stat (objfile
->obfd
->my_archive
->filename
, &new_statbuf
);
1627 res
= stat (objfile
->name
, &new_statbuf
);
1630 /* FIXME, should use print_sys_errmsg but it's not filtered. */
1631 printf_filtered ("`%s' has disappeared; keeping its symbols.\n",
1635 new_modtime
= new_statbuf
.st_mtime
;
1636 if (new_modtime
!= objfile
->mtime
)
1638 struct cleanup
*old_cleanups
;
1639 struct section_offsets
*offsets
;
1641 char *obfd_filename
;
1643 printf_filtered ("`%s' has changed; re-reading symbols.\n",
1646 /* There are various functions like symbol_file_add,
1647 symfile_bfd_open, syms_from_objfile, etc., which might
1648 appear to do what we want. But they have various other
1649 effects which we *don't* want. So we just do stuff
1650 ourselves. We don't worry about mapped files (for one thing,
1651 any mapped file will be out of date). */
1653 /* If we get an error, blow away this objfile (not sure if
1654 that is the correct response for things like shared
1656 old_cleanups
= make_cleanup_free_objfile (objfile
);
1657 /* We need to do this whenever any symbols go away. */
1658 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
1660 /* Clean up any state BFD has sitting around. We don't need
1661 to close the descriptor but BFD lacks a way of closing the
1662 BFD without closing the descriptor. */
1663 obfd_filename
= bfd_get_filename (objfile
->obfd
);
1664 if (!bfd_close (objfile
->obfd
))
1665 error ("Can't close BFD for %s: %s", objfile
->name
,
1666 bfd_errmsg (bfd_get_error ()));
1667 objfile
->obfd
= bfd_openr (obfd_filename
, gnutarget
);
1668 if (objfile
->obfd
== NULL
)
1669 error ("Can't open %s to read symbols.", objfile
->name
);
1670 /* bfd_openr sets cacheable to true, which is what we want. */
1671 if (!bfd_check_format (objfile
->obfd
, bfd_object
))
1672 error ("Can't read symbols from %s: %s.", objfile
->name
,
1673 bfd_errmsg (bfd_get_error ()));
1675 /* Save the offsets, we will nuke them with the rest of the
1677 num_offsets
= objfile
->num_sections
;
1678 offsets
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
1679 memcpy (offsets
, objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1681 /* Nuke all the state that we will re-read. Much of the following
1682 code which sets things to NULL really is necessary to tell
1683 other parts of GDB that there is nothing currently there. */
1685 /* FIXME: Do we have to free a whole linked list, or is this
1687 if (objfile
->global_psymbols
.list
)
1688 mfree (objfile
->md
, objfile
->global_psymbols
.list
);
1689 memset (&objfile
->global_psymbols
, 0,
1690 sizeof (objfile
->global_psymbols
));
1691 if (objfile
->static_psymbols
.list
)
1692 mfree (objfile
->md
, objfile
->static_psymbols
.list
);
1693 memset (&objfile
->static_psymbols
, 0,
1694 sizeof (objfile
->static_psymbols
));
1696 /* Free the obstacks for non-reusable objfiles */
1697 free_bcache (&objfile
->psymbol_cache
);
1698 obstack_free (&objfile
->psymbol_obstack
, 0);
1699 obstack_free (&objfile
->symbol_obstack
, 0);
1700 obstack_free (&objfile
->type_obstack
, 0);
1701 objfile
->sections
= NULL
;
1702 objfile
->symtabs
= NULL
;
1703 objfile
->psymtabs
= NULL
;
1704 objfile
->free_psymtabs
= NULL
;
1705 objfile
->msymbols
= NULL
;
1706 objfile
->minimal_symbol_count
= 0;
1707 memset (&objfile
->msymbol_hash
, 0,
1708 sizeof (objfile
->msymbol_hash
));
1709 memset (&objfile
->msymbol_demangled_hash
, 0,
1710 sizeof (objfile
->msymbol_demangled_hash
));
1711 objfile
->fundamental_types
= NULL
;
1712 if (objfile
->sf
!= NULL
)
1714 (*objfile
->sf
->sym_finish
) (objfile
);
1717 /* We never make this a mapped file. */
1719 /* obstack_specify_allocation also initializes the obstack so
1721 obstack_specify_allocation (&objfile
->psymbol_cache
.cache
, 0, 0,
1723 obstack_specify_allocation (&objfile
->psymbol_obstack
, 0, 0,
1725 obstack_specify_allocation (&objfile
->symbol_obstack
, 0, 0,
1727 obstack_specify_allocation (&objfile
->type_obstack
, 0, 0,
1729 if (build_objfile_section_table (objfile
))
1731 error ("Can't find the file sections in `%s': %s",
1732 objfile
->name
, bfd_errmsg (bfd_get_error ()));
1735 /* We use the same section offsets as from last time. I'm not
1736 sure whether that is always correct for shared libraries. */
1737 objfile
->section_offsets
= (struct section_offsets
*)
1738 obstack_alloc (&objfile
->psymbol_obstack
, SIZEOF_SECTION_OFFSETS
);
1739 memcpy (objfile
->section_offsets
, offsets
, SIZEOF_SECTION_OFFSETS
);
1740 objfile
->num_sections
= num_offsets
;
1742 /* What the hell is sym_new_init for, anyway? The concept of
1743 distinguishing between the main file and additional files
1744 in this way seems rather dubious. */
1745 if (objfile
== symfile_objfile
)
1747 (*objfile
->sf
->sym_new_init
) (objfile
);
1749 RESET_HP_UX_GLOBALS ();
1753 (*objfile
->sf
->sym_init
) (objfile
);
1754 clear_complaints (1, 1);
1755 /* The "mainline" parameter is a hideous hack; I think leaving it
1756 zero is OK since dbxread.c also does what it needs to do if
1757 objfile->global_psymbols.size is 0. */
1758 (*objfile
->sf
->sym_read
) (objfile
, 0);
1759 if (!have_partial_symbols () && !have_full_symbols ())
1762 printf_filtered ("(no debugging symbols found)\n");
1765 objfile
->flags
|= OBJF_SYMS
;
1767 /* We're done reading the symbol file; finish off complaints. */
1768 clear_complaints (0, 1);
1770 /* Getting new symbols may change our opinion about what is
1773 reinit_frame_cache ();
1775 /* Discard cleanups as symbol reading was successful. */
1776 discard_cleanups (old_cleanups
);
1778 /* If the mtime has changed between the time we set new_modtime
1779 and now, we *want* this to be out of date, so don't call stat
1781 objfile
->mtime
= new_modtime
;
1784 /* Call this after reading in a new symbol table to give target
1785 dependant code a crack at the new symbols. For instance, this
1786 could be used to update the values of target-specific symbols GDB
1787 needs to keep track of (such as _sigtramp, or whatever). */
1789 TARGET_SYMFILE_POSTREAD (objfile
);
1795 clear_symtab_users ();
1807 static filename_language
*filename_language_table
;
1808 static int fl_table_size
, fl_table_next
;
1811 add_filename_language (ext
, lang
)
1815 if (fl_table_next
>= fl_table_size
)
1817 fl_table_size
+= 10;
1818 filename_language_table
= realloc (filename_language_table
,
1822 filename_language_table
[fl_table_next
].ext
= strsave (ext
);
1823 filename_language_table
[fl_table_next
].lang
= lang
;
1827 static char *ext_args
;
1830 set_ext_lang_command (args
, from_tty
)
1835 char *cp
= ext_args
;
1838 /* First arg is filename extension, starting with '.' */
1840 error ("'%s': Filename extension must begin with '.'", ext_args
);
1842 /* Find end of first arg. */
1843 while (*cp
&& !isspace (*cp
))
1847 error ("'%s': two arguments required -- filename extension and language",
1850 /* Null-terminate first arg */
1853 /* Find beginning of second arg, which should be a source language. */
1854 while (*cp
&& isspace (*cp
))
1858 error ("'%s': two arguments required -- filename extension and language",
1861 /* Lookup the language from among those we know. */
1862 lang
= language_enum (cp
);
1864 /* Now lookup the filename extension: do we already know it? */
1865 for (i
= 0; i
< fl_table_next
; i
++)
1866 if (0 == strcmp (ext_args
, filename_language_table
[i
].ext
))
1869 if (i
>= fl_table_next
)
1871 /* new file extension */
1872 add_filename_language (ext_args
, lang
);
1876 /* redefining a previously known filename extension */
1879 /* query ("Really make files of type %s '%s'?", */
1880 /* ext_args, language_str (lang)); */
1882 free (filename_language_table
[i
].ext
);
1883 filename_language_table
[i
].ext
= strsave (ext_args
);
1884 filename_language_table
[i
].lang
= lang
;
1889 info_ext_lang_command (args
, from_tty
)
1895 printf_filtered ("Filename extensions and the languages they represent:");
1896 printf_filtered ("\n\n");
1897 for (i
= 0; i
< fl_table_next
; i
++)
1898 printf_filtered ("\t%s\t- %s\n",
1899 filename_language_table
[i
].ext
,
1900 language_str (filename_language_table
[i
].lang
));
1904 init_filename_language_table ()
1906 if (fl_table_size
== 0) /* protect against repetition */
1910 filename_language_table
=
1911 xmalloc (fl_table_size
* sizeof (*filename_language_table
));
1912 add_filename_language (".c", language_c
);
1913 add_filename_language (".C", language_cplus
);
1914 add_filename_language (".cc", language_cplus
);
1915 add_filename_language (".cp", language_cplus
);
1916 add_filename_language (".cpp", language_cplus
);
1917 add_filename_language (".cxx", language_cplus
);
1918 add_filename_language (".c++", language_cplus
);
1919 add_filename_language (".java", language_java
);
1920 add_filename_language (".class", language_java
);
1921 add_filename_language (".ch", language_chill
);
1922 add_filename_language (".c186", language_chill
);
1923 add_filename_language (".c286", language_chill
);
1924 add_filename_language (".f", language_fortran
);
1925 add_filename_language (".F", language_fortran
);
1926 add_filename_language (".s", language_asm
);
1927 add_filename_language (".S", language_asm
);
1932 deduce_language_from_filename (filename
)
1938 if (filename
!= NULL
)
1939 if ((cp
= strrchr (filename
, '.')) != NULL
)
1940 for (i
= 0; i
< fl_table_next
; i
++)
1941 if (strcmp (cp
, filename_language_table
[i
].ext
) == 0)
1942 return filename_language_table
[i
].lang
;
1944 return language_unknown
;
1949 Allocate and partly initialize a new symbol table. Return a pointer
1950 to it. error() if no space.
1952 Caller must set these fields:
1958 possibly free_named_symtabs (symtab->filename);
1962 allocate_symtab (filename
, objfile
)
1964 struct objfile
*objfile
;
1966 register struct symtab
*symtab
;
1968 symtab
= (struct symtab
*)
1969 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symtab
));
1970 memset (symtab
, 0, sizeof (*symtab
));
1971 symtab
->filename
= obsavestring (filename
, strlen (filename
),
1972 &objfile
->symbol_obstack
);
1973 symtab
->fullname
= NULL
;
1974 symtab
->language
= deduce_language_from_filename (filename
);
1975 symtab
->debugformat
= obsavestring ("unknown", 7,
1976 &objfile
->symbol_obstack
);
1978 /* Hook it to the objfile it comes from */
1980 symtab
->objfile
= objfile
;
1981 symtab
->next
= objfile
->symtabs
;
1982 objfile
->symtabs
= symtab
;
1984 /* FIXME: This should go away. It is only defined for the Z8000,
1985 and the Z8000 definition of this macro doesn't have anything to
1986 do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just
1987 here for convenience. */
1988 #ifdef INIT_EXTRA_SYMTAB_INFO
1989 INIT_EXTRA_SYMTAB_INFO (symtab
);
1995 struct partial_symtab
*
1996 allocate_psymtab (filename
, objfile
)
1998 struct objfile
*objfile
;
2000 struct partial_symtab
*psymtab
;
2002 if (objfile
->free_psymtabs
)
2004 psymtab
= objfile
->free_psymtabs
;
2005 objfile
->free_psymtabs
= psymtab
->next
;
2008 psymtab
= (struct partial_symtab
*)
2009 obstack_alloc (&objfile
->psymbol_obstack
,
2010 sizeof (struct partial_symtab
));
2012 memset (psymtab
, 0, sizeof (struct partial_symtab
));
2013 psymtab
->filename
= obsavestring (filename
, strlen (filename
),
2014 &objfile
->psymbol_obstack
);
2015 psymtab
->symtab
= NULL
;
2017 /* Prepend it to the psymtab list for the objfile it belongs to.
2018 Psymtabs are searched in most recent inserted -> least recent
2021 psymtab
->objfile
= objfile
;
2022 psymtab
->next
= objfile
->psymtabs
;
2023 objfile
->psymtabs
= psymtab
;
2026 struct partial_symtab
**prev_pst
;
2027 psymtab
->objfile
= objfile
;
2028 psymtab
->next
= NULL
;
2029 prev_pst
= &(objfile
->psymtabs
);
2030 while ((*prev_pst
) != NULL
)
2031 prev_pst
= &((*prev_pst
)->next
);
2032 (*prev_pst
) = psymtab
;
2040 discard_psymtab (pst
)
2041 struct partial_symtab
*pst
;
2043 struct partial_symtab
**prev_pst
;
2046 Empty psymtabs happen as a result of header files which don't
2047 have any symbols in them. There can be a lot of them. But this
2048 check is wrong, in that a psymtab with N_SLINE entries but
2049 nothing else is not empty, but we don't realize that. Fixing
2050 that without slowing things down might be tricky. */
2052 /* First, snip it out of the psymtab chain */
2054 prev_pst
= &(pst
->objfile
->psymtabs
);
2055 while ((*prev_pst
) != pst
)
2056 prev_pst
= &((*prev_pst
)->next
);
2057 (*prev_pst
) = pst
->next
;
2059 /* Next, put it on a free list for recycling */
2061 pst
->next
= pst
->objfile
->free_psymtabs
;
2062 pst
->objfile
->free_psymtabs
= pst
;
2066 /* Reset all data structures in gdb which may contain references to symbol
2070 clear_symtab_users ()
2072 /* Someday, we should do better than this, by only blowing away
2073 the things that really need to be blown. */
2074 clear_value_history ();
2076 clear_internalvars ();
2077 breakpoint_re_set ();
2078 set_default_breakpoint (0, 0, 0, 0);
2079 current_source_symtab
= 0;
2080 current_source_line
= 0;
2081 clear_pc_function_cache ();
2082 if (target_new_objfile_hook
)
2083 target_new_objfile_hook (NULL
);
2087 clear_symtab_users_cleanup (void *ignore
)
2089 clear_symtab_users ();
2092 /* clear_symtab_users_once:
2094 This function is run after symbol reading, or from a cleanup.
2095 If an old symbol table was obsoleted, the old symbol table
2096 has been blown away, but the other GDB data structures that may
2097 reference it have not yet been cleared or re-directed. (The old
2098 symtab was zapped, and the cleanup queued, in free_named_symtab()
2101 This function can be queued N times as a cleanup, or called
2102 directly; it will do all the work the first time, and then will be a
2103 no-op until the next time it is queued. This works by bumping a
2104 counter at queueing time. Much later when the cleanup is run, or at
2105 the end of symbol processing (in case the cleanup is discarded), if
2106 the queued count is greater than the "done-count", we do the work
2107 and set the done-count to the queued count. If the queued count is
2108 less than or equal to the done-count, we just ignore the call. This
2109 is needed because reading a single .o file will often replace many
2110 symtabs (one per .h file, for example), and we don't want to reset
2111 the breakpoints N times in the user's face.
2113 The reason we both queue a cleanup, and call it directly after symbol
2114 reading, is because the cleanup protects us in case of errors, but is
2115 discarded if symbol reading is successful. */
2118 /* FIXME: As free_named_symtabs is currently a big noop this function
2119 is no longer needed. */
2120 static void clear_symtab_users_once (void);
2122 static int clear_symtab_users_queued
;
2123 static int clear_symtab_users_done
;
2126 clear_symtab_users_once ()
2128 /* Enforce once-per-`do_cleanups'-semantics */
2129 if (clear_symtab_users_queued
<= clear_symtab_users_done
)
2131 clear_symtab_users_done
= clear_symtab_users_queued
;
2133 clear_symtab_users ();
2137 /* Delete the specified psymtab, and any others that reference it. */
2140 cashier_psymtab (pst
)
2141 struct partial_symtab
*pst
;
2143 struct partial_symtab
*ps
, *pprev
= NULL
;
2146 /* Find its previous psymtab in the chain */
2147 for (ps
= pst
->objfile
->psymtabs
; ps
; ps
= ps
->next
)
2156 /* Unhook it from the chain. */
2157 if (ps
== pst
->objfile
->psymtabs
)
2158 pst
->objfile
->psymtabs
= ps
->next
;
2160 pprev
->next
= ps
->next
;
2162 /* FIXME, we can't conveniently deallocate the entries in the
2163 partial_symbol lists (global_psymbols/static_psymbols) that
2164 this psymtab points to. These just take up space until all
2165 the psymtabs are reclaimed. Ditto the dependencies list and
2166 filename, which are all in the psymbol_obstack. */
2168 /* We need to cashier any psymtab that has this one as a dependency... */
2170 for (ps
= pst
->objfile
->psymtabs
; ps
; ps
= ps
->next
)
2172 for (i
= 0; i
< ps
->number_of_dependencies
; i
++)
2174 if (ps
->dependencies
[i
] == pst
)
2176 cashier_psymtab (ps
);
2177 goto again
; /* Must restart, chain has been munged. */
2184 /* If a symtab or psymtab for filename NAME is found, free it along
2185 with any dependent breakpoints, displays, etc.
2186 Used when loading new versions of object modules with the "add-file"
2187 command. This is only called on the top-level symtab or psymtab's name;
2188 it is not called for subsidiary files such as .h files.
2190 Return value is 1 if we blew away the environment, 0 if not.
2191 FIXME. The return valu appears to never be used.
2193 FIXME. I think this is not the best way to do this. We should
2194 work on being gentler to the environment while still cleaning up
2195 all stray pointers into the freed symtab. */
2198 free_named_symtabs (name
)
2202 /* FIXME: With the new method of each objfile having it's own
2203 psymtab list, this function needs serious rethinking. In particular,
2204 why was it ever necessary to toss psymtabs with specific compilation
2205 unit filenames, as opposed to all psymtabs from a particular symbol
2207 Well, the answer is that some systems permit reloading of particular
2208 compilation units. We want to blow away any old info about these
2209 compilation units, regardless of which objfiles they arrived in. --gnu. */
2211 register struct symtab
*s
;
2212 register struct symtab
*prev
;
2213 register struct partial_symtab
*ps
;
2214 struct blockvector
*bv
;
2217 /* We only wack things if the symbol-reload switch is set. */
2218 if (!symbol_reloading
)
2221 /* Some symbol formats have trouble providing file names... */
2222 if (name
== 0 || *name
== '\0')
2225 /* Look for a psymtab with the specified name. */
2228 for (ps
= partial_symtab_list
; ps
; ps
= ps
->next
)
2230 if (STREQ (name
, ps
->filename
))
2232 cashier_psymtab (ps
); /* Blow it away...and its little dog, too. */
2233 goto again2
; /* Must restart, chain has been munged */
2237 /* Look for a symtab with the specified name. */
2239 for (s
= symtab_list
; s
; s
= s
->next
)
2241 if (STREQ (name
, s
->filename
))
2248 if (s
== symtab_list
)
2249 symtab_list
= s
->next
;
2251 prev
->next
= s
->next
;
2253 /* For now, queue a delete for all breakpoints, displays, etc., whether
2254 or not they depend on the symtab being freed. This should be
2255 changed so that only those data structures affected are deleted. */
2257 /* But don't delete anything if the symtab is empty.
2258 This test is necessary due to a bug in "dbxread.c" that
2259 causes empty symtabs to be created for N_SO symbols that
2260 contain the pathname of the object file. (This problem
2261 has been fixed in GDB 3.9x). */
2263 bv
= BLOCKVECTOR (s
);
2264 if (BLOCKVECTOR_NBLOCKS (bv
) > 2
2265 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
))
2266 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)))
2268 complain (&oldsyms_complaint
, name
);
2270 clear_symtab_users_queued
++;
2271 make_cleanup (clear_symtab_users_once
, 0);
2276 complain (&empty_symtab_complaint
, name
);
2283 /* It is still possible that some breakpoints will be affected
2284 even though no symtab was found, since the file might have
2285 been compiled without debugging, and hence not be associated
2286 with a symtab. In order to handle this correctly, we would need
2287 to keep a list of text address ranges for undebuggable files.
2288 For now, we do nothing, since this is a fairly obscure case. */
2292 /* FIXME, what about the minimal symbol table? */
2299 /* Allocate and partially fill a partial symtab. It will be
2300 completely filled at the end of the symbol list.
2302 FILENAME is the name of the symbol-file we are reading from. */
2304 struct partial_symtab
*
2305 start_psymtab_common (objfile
, section_offsets
,
2306 filename
, textlow
, global_syms
, static_syms
)
2307 struct objfile
*objfile
;
2308 struct section_offsets
*section_offsets
;
2311 struct partial_symbol
**global_syms
;
2312 struct partial_symbol
**static_syms
;
2314 struct partial_symtab
*psymtab
;
2316 psymtab
= allocate_psymtab (filename
, objfile
);
2317 psymtab
->section_offsets
= section_offsets
;
2318 psymtab
->textlow
= textlow
;
2319 psymtab
->texthigh
= psymtab
->textlow
; /* default */
2320 psymtab
->globals_offset
= global_syms
- objfile
->global_psymbols
.list
;
2321 psymtab
->statics_offset
= static_syms
- objfile
->static_psymbols
.list
;
2325 /* Add a symbol with a long value to a psymtab.
2326 Since one arg is a struct, we pass in a ptr and deref it (sigh). */
2329 add_psymbol_to_list (name
, namelength
, namespace, class, list
, val
, coreaddr
,
2333 namespace_enum
namespace;
2334 enum address_class
class;
2335 struct psymbol_allocation_list
*list
;
2336 long val
; /* Value as a long */
2337 CORE_ADDR coreaddr
; /* Value as a CORE_ADDR */
2338 enum language language
;
2339 struct objfile
*objfile
;
2341 register struct partial_symbol
*psym
;
2342 char *buf
= alloca (namelength
+ 1);
2343 /* psymbol is static so that there will be no uninitialized gaps in the
2344 structure which might contain random data, causing cache misses in
2346 static struct partial_symbol psymbol
;
2348 /* Create local copy of the partial symbol */
2349 memcpy (buf
, name
, namelength
);
2350 buf
[namelength
] = '\0';
2351 SYMBOL_NAME (&psymbol
) = bcache (buf
, namelength
+ 1, &objfile
->psymbol_cache
);
2352 /* val and coreaddr are mutually exclusive, one of them *will* be zero */
2355 SYMBOL_VALUE (&psymbol
) = val
;
2359 SYMBOL_VALUE_ADDRESS (&psymbol
) = coreaddr
;
2361 SYMBOL_SECTION (&psymbol
) = 0;
2362 SYMBOL_LANGUAGE (&psymbol
) = language
;
2363 PSYMBOL_NAMESPACE (&psymbol
) = namespace;
2364 PSYMBOL_CLASS (&psymbol
) = class;
2365 SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol
, language
);
2367 /* Stash the partial symbol away in the cache */
2368 psym
= bcache (&psymbol
, sizeof (struct partial_symbol
), &objfile
->psymbol_cache
);
2370 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
2371 if (list
->next
>= list
->list
+ list
->size
)
2373 extend_psymbol_list (list
, objfile
);
2375 *list
->next
++ = psym
;
2376 OBJSTAT (objfile
, n_psyms
++);
2379 /* Add a symbol with a long value to a psymtab. This differs from
2380 * add_psymbol_to_list above in taking both a mangled and a demangled
2384 add_psymbol_with_dem_name_to_list (name
, namelength
, dem_name
, dem_namelength
,
2385 namespace, class, list
, val
, coreaddr
, language
, objfile
)
2390 namespace_enum
namespace;
2391 enum address_class
class;
2392 struct psymbol_allocation_list
*list
;
2393 long val
; /* Value as a long */
2394 CORE_ADDR coreaddr
; /* Value as a CORE_ADDR */
2395 enum language language
;
2396 struct objfile
*objfile
;
2398 register struct partial_symbol
*psym
;
2399 char *buf
= alloca (namelength
+ 1);
2400 /* psymbol is static so that there will be no uninitialized gaps in the
2401 structure which might contain random data, causing cache misses in
2403 static struct partial_symbol psymbol
;
2405 /* Create local copy of the partial symbol */
2407 memcpy (buf
, name
, namelength
);
2408 buf
[namelength
] = '\0';
2409 SYMBOL_NAME (&psymbol
) = bcache (buf
, namelength
+ 1, &objfile
->psymbol_cache
);
2411 buf
= alloca (dem_namelength
+ 1);
2412 memcpy (buf
, dem_name
, dem_namelength
);
2413 buf
[dem_namelength
] = '\0';
2418 case language_cplus
:
2419 SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol
) =
2420 bcache (buf
, dem_namelength
+ 1, &objfile
->psymbol_cache
);
2422 case language_chill
:
2423 SYMBOL_CHILL_DEMANGLED_NAME (&psymbol
) =
2424 bcache (buf
, dem_namelength
+ 1, &objfile
->psymbol_cache
);
2426 /* FIXME What should be done for the default case? Ignoring for now. */
2429 /* val and coreaddr are mutually exclusive, one of them *will* be zero */
2432 SYMBOL_VALUE (&psymbol
) = val
;
2436 SYMBOL_VALUE_ADDRESS (&psymbol
) = coreaddr
;
2438 SYMBOL_SECTION (&psymbol
) = 0;
2439 SYMBOL_LANGUAGE (&psymbol
) = language
;
2440 PSYMBOL_NAMESPACE (&psymbol
) = namespace;
2441 PSYMBOL_CLASS (&psymbol
) = class;
2442 SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol
, language
);
2444 /* Stash the partial symbol away in the cache */
2445 psym
= bcache (&psymbol
, sizeof (struct partial_symbol
), &objfile
->psymbol_cache
);
2447 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
2448 if (list
->next
>= list
->list
+ list
->size
)
2450 extend_psymbol_list (list
, objfile
);
2452 *list
->next
++ = psym
;
2453 OBJSTAT (objfile
, n_psyms
++);
2456 /* Initialize storage for partial symbols. */
2459 init_psymbol_list (objfile
, total_symbols
)
2460 struct objfile
*objfile
;
2463 /* Free any previously allocated psymbol lists. */
2465 if (objfile
->global_psymbols
.list
)
2467 mfree (objfile
->md
, (PTR
) objfile
->global_psymbols
.list
);
2469 if (objfile
->static_psymbols
.list
)
2471 mfree (objfile
->md
, (PTR
) objfile
->static_psymbols
.list
);
2474 /* Current best guess is that approximately a twentieth
2475 of the total symbols (in a debugging file) are global or static
2478 objfile
->global_psymbols
.size
= total_symbols
/ 10;
2479 objfile
->static_psymbols
.size
= total_symbols
/ 10;
2481 if (objfile
->global_psymbols
.size
> 0)
2483 objfile
->global_psymbols
.next
=
2484 objfile
->global_psymbols
.list
= (struct partial_symbol
**)
2485 xmmalloc (objfile
->md
, (objfile
->global_psymbols
.size
2486 * sizeof (struct partial_symbol
*)));
2488 if (objfile
->static_psymbols
.size
> 0)
2490 objfile
->static_psymbols
.next
=
2491 objfile
->static_psymbols
.list
= (struct partial_symbol
**)
2492 xmmalloc (objfile
->md
, (objfile
->static_psymbols
.size
2493 * sizeof (struct partial_symbol
*)));
2498 The following code implements an abstraction for debugging overlay sections.
2500 The target model is as follows:
2501 1) The gnu linker will permit multiple sections to be mapped into the
2502 same VMA, each with its own unique LMA (or load address).
2503 2) It is assumed that some runtime mechanism exists for mapping the
2504 sections, one by one, from the load address into the VMA address.
2505 3) This code provides a mechanism for gdb to keep track of which
2506 sections should be considered to be mapped from the VMA to the LMA.
2507 This information is used for symbol lookup, and memory read/write.
2508 For instance, if a section has been mapped then its contents
2509 should be read from the VMA, otherwise from the LMA.
2511 Two levels of debugger support for overlays are available. One is
2512 "manual", in which the debugger relies on the user to tell it which
2513 overlays are currently mapped. This level of support is
2514 implemented entirely in the core debugger, and the information about
2515 whether a section is mapped is kept in the objfile->obj_section table.
2517 The second level of support is "automatic", and is only available if
2518 the target-specific code provides functionality to read the target's
2519 overlay mapping table, and translate its contents for the debugger
2520 (by updating the mapped state information in the obj_section tables).
2522 The interface is as follows:
2524 overlay map <name> -- tell gdb to consider this section mapped
2525 overlay unmap <name> -- tell gdb to consider this section unmapped
2526 overlay list -- list the sections that GDB thinks are mapped
2527 overlay read-target -- get the target's state of what's mapped
2528 overlay off/manual/auto -- set overlay debugging state
2529 Functional interface:
2530 find_pc_mapped_section(pc): if the pc is in the range of a mapped
2531 section, return that section.
2532 find_pc_overlay(pc): find any overlay section that contains
2533 the pc, either in its VMA or its LMA
2534 overlay_is_mapped(sect): true if overlay is marked as mapped
2535 section_is_overlay(sect): true if section's VMA != LMA
2536 pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
2537 pc_in_unmapped_range(...): true if pc belongs to section's LMA
2538 overlay_mapped_address(...): map an address from section's LMA to VMA
2539 overlay_unmapped_address(...): map an address from section's VMA to LMA
2540 symbol_overlayed_address(...): Return a "current" address for symbol:
2541 either in VMA or LMA depending on whether
2542 the symbol's section is currently mapped
2545 /* Overlay debugging state: */
2547 int overlay_debugging
= 0; /* 0 == off, 1 == manual, -1 == auto */
2548 int overlay_cache_invalid
= 0; /* True if need to refresh mapped state */
2550 /* Target vector for refreshing overlay mapped state */
2551 static void simple_overlay_update (struct obj_section
*);
2552 void (*target_overlay_update
) (struct obj_section
*) = simple_overlay_update
;
2554 /* Function: section_is_overlay (SECTION)
2555 Returns true if SECTION has VMA not equal to LMA, ie.
2556 SECTION is loaded at an address different from where it will "run". */
2559 section_is_overlay (section
)
2562 if (overlay_debugging
)
2563 if (section
&& section
->lma
!= 0 &&
2564 section
->vma
!= section
->lma
)
2570 /* Function: overlay_invalidate_all (void)
2571 Invalidate the mapped state of all overlay sections (mark it as stale). */
2574 overlay_invalidate_all ()
2576 struct objfile
*objfile
;
2577 struct obj_section
*sect
;
2579 ALL_OBJSECTIONS (objfile
, sect
)
2580 if (section_is_overlay (sect
->the_bfd_section
))
2581 sect
->ovly_mapped
= -1;
2584 /* Function: overlay_is_mapped (SECTION)
2585 Returns true if section is an overlay, and is currently mapped.
2586 Private: public access is thru function section_is_mapped.
2588 Access to the ovly_mapped flag is restricted to this function, so
2589 that we can do automatic update. If the global flag
2590 OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
2591 overlay_invalidate_all. If the mapped state of the particular
2592 section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */
2595 overlay_is_mapped (osect
)
2596 struct obj_section
*osect
;
2598 if (osect
== 0 || !section_is_overlay (osect
->the_bfd_section
))
2601 switch (overlay_debugging
)
2605 return 0; /* overlay debugging off */
2606 case -1: /* overlay debugging automatic */
2607 /* Unles there is a target_overlay_update function,
2608 there's really nothing useful to do here (can't really go auto) */
2609 if (target_overlay_update
)
2611 if (overlay_cache_invalid
)
2613 overlay_invalidate_all ();
2614 overlay_cache_invalid
= 0;
2616 if (osect
->ovly_mapped
== -1)
2617 (*target_overlay_update
) (osect
);
2619 /* fall thru to manual case */
2620 case 1: /* overlay debugging manual */
2621 return osect
->ovly_mapped
== 1;
2625 /* Function: section_is_mapped
2626 Returns true if section is an overlay, and is currently mapped. */
2629 section_is_mapped (section
)
2632 struct objfile
*objfile
;
2633 struct obj_section
*osect
;
2635 if (overlay_debugging
)
2636 if (section
&& section_is_overlay (section
))
2637 ALL_OBJSECTIONS (objfile
, osect
)
2638 if (osect
->the_bfd_section
== section
)
2639 return overlay_is_mapped (osect
);
2644 /* Function: pc_in_unmapped_range
2645 If PC falls into the lma range of SECTION, return true, else false. */
2648 pc_in_unmapped_range (pc
, section
)
2654 if (overlay_debugging
)
2655 if (section
&& section_is_overlay (section
))
2657 size
= bfd_get_section_size_before_reloc (section
);
2658 if (section
->lma
<= pc
&& pc
< section
->lma
+ size
)
2664 /* Function: pc_in_mapped_range
2665 If PC falls into the vma range of SECTION, return true, else false. */
2668 pc_in_mapped_range (pc
, section
)
2674 if (overlay_debugging
)
2675 if (section
&& section_is_overlay (section
))
2677 size
= bfd_get_section_size_before_reloc (section
);
2678 if (section
->vma
<= pc
&& pc
< section
->vma
+ size
)
2684 /* Function: overlay_unmapped_address (PC, SECTION)
2685 Returns the address corresponding to PC in the unmapped (load) range.
2686 May be the same as PC. */
2689 overlay_unmapped_address (pc
, section
)
2693 if (overlay_debugging
)
2694 if (section
&& section_is_overlay (section
) &&
2695 pc_in_mapped_range (pc
, section
))
2696 return pc
+ section
->lma
- section
->vma
;
2701 /* Function: overlay_mapped_address (PC, SECTION)
2702 Returns the address corresponding to PC in the mapped (runtime) range.
2703 May be the same as PC. */
2706 overlay_mapped_address (pc
, section
)
2710 if (overlay_debugging
)
2711 if (section
&& section_is_overlay (section
) &&
2712 pc_in_unmapped_range (pc
, section
))
2713 return pc
+ section
->vma
- section
->lma
;
2719 /* Function: symbol_overlayed_address
2720 Return one of two addresses (relative to the VMA or to the LMA),
2721 depending on whether the section is mapped or not. */
2724 symbol_overlayed_address (address
, section
)
2728 if (overlay_debugging
)
2730 /* If the symbol has no section, just return its regular address. */
2733 /* If the symbol's section is not an overlay, just return its address */
2734 if (!section_is_overlay (section
))
2736 /* If the symbol's section is mapped, just return its address */
2737 if (section_is_mapped (section
))
2740 * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
2741 * then return its LOADED address rather than its vma address!!
2743 return overlay_unmapped_address (address
, section
);
2748 /* Function: find_pc_overlay (PC)
2749 Return the best-match overlay section for PC:
2750 If PC matches a mapped overlay section's VMA, return that section.
2751 Else if PC matches an unmapped section's VMA, return that section.
2752 Else if PC matches an unmapped section's LMA, return that section. */
2755 find_pc_overlay (pc
)
2758 struct objfile
*objfile
;
2759 struct obj_section
*osect
, *best_match
= NULL
;
2761 if (overlay_debugging
)
2762 ALL_OBJSECTIONS (objfile
, osect
)
2763 if (section_is_overlay (osect
->the_bfd_section
))
2765 if (pc_in_mapped_range (pc
, osect
->the_bfd_section
))
2767 if (overlay_is_mapped (osect
))
2768 return osect
->the_bfd_section
;
2772 else if (pc_in_unmapped_range (pc
, osect
->the_bfd_section
))
2775 return best_match
? best_match
->the_bfd_section
: NULL
;
2778 /* Function: find_pc_mapped_section (PC)
2779 If PC falls into the VMA address range of an overlay section that is
2780 currently marked as MAPPED, return that section. Else return NULL. */
2783 find_pc_mapped_section (pc
)
2786 struct objfile
*objfile
;
2787 struct obj_section
*osect
;
2789 if (overlay_debugging
)
2790 ALL_OBJSECTIONS (objfile
, osect
)
2791 if (pc_in_mapped_range (pc
, osect
->the_bfd_section
) &&
2792 overlay_is_mapped (osect
))
2793 return osect
->the_bfd_section
;
2798 /* Function: list_overlays_command
2799 Print a list of mapped sections and their PC ranges */
2802 list_overlays_command (args
, from_tty
)
2807 struct objfile
*objfile
;
2808 struct obj_section
*osect
;
2810 if (overlay_debugging
)
2811 ALL_OBJSECTIONS (objfile
, osect
)
2812 if (overlay_is_mapped (osect
))
2818 vma
= bfd_section_vma (objfile
->obfd
, osect
->the_bfd_section
);
2819 lma
= bfd_section_lma (objfile
->obfd
, osect
->the_bfd_section
);
2820 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
2821 name
= bfd_section_name (objfile
->obfd
, osect
->the_bfd_section
);
2823 printf_filtered ("Section %s, loaded at ", name
);
2824 print_address_numeric (lma
, 1, gdb_stdout
);
2825 puts_filtered (" - ");
2826 print_address_numeric (lma
+ size
, 1, gdb_stdout
);
2827 printf_filtered (", mapped at ");
2828 print_address_numeric (vma
, 1, gdb_stdout
);
2829 puts_filtered (" - ");
2830 print_address_numeric (vma
+ size
, 1, gdb_stdout
);
2831 puts_filtered ("\n");
2836 printf_filtered ("No sections are mapped.\n");
2839 /* Function: map_overlay_command
2840 Mark the named section as mapped (ie. residing at its VMA address). */
2843 map_overlay_command (args
, from_tty
)
2847 struct objfile
*objfile
, *objfile2
;
2848 struct obj_section
*sec
, *sec2
;
2851 if (!overlay_debugging
)
2853 Overlay debugging not enabled. Use either the 'overlay auto' or\n\
2854 the 'overlay manual' command.");
2856 if (args
== 0 || *args
== 0)
2857 error ("Argument required: name of an overlay section");
2859 /* First, find a section matching the user supplied argument */
2860 ALL_OBJSECTIONS (objfile
, sec
)
2861 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
2863 /* Now, check to see if the section is an overlay. */
2864 bfdsec
= sec
->the_bfd_section
;
2865 if (!section_is_overlay (bfdsec
))
2866 continue; /* not an overlay section */
2868 /* Mark the overlay as "mapped" */
2869 sec
->ovly_mapped
= 1;
2871 /* Next, make a pass and unmap any sections that are
2872 overlapped by this new section: */
2873 ALL_OBJSECTIONS (objfile2
, sec2
)
2874 if (sec2
->ovly_mapped
&&
2876 sec
->the_bfd_section
!= sec2
->the_bfd_section
&&
2877 (pc_in_mapped_range (sec2
->addr
, sec
->the_bfd_section
) ||
2878 pc_in_mapped_range (sec2
->endaddr
, sec
->the_bfd_section
)))
2881 printf_filtered ("Note: section %s unmapped by overlap\n",
2882 bfd_section_name (objfile
->obfd
,
2883 sec2
->the_bfd_section
));
2884 sec2
->ovly_mapped
= 0; /* sec2 overlaps sec: unmap sec2 */
2888 error ("No overlay section called %s", args
);
2891 /* Function: unmap_overlay_command
2892 Mark the overlay section as unmapped
2893 (ie. resident in its LMA address range, rather than the VMA range). */
2896 unmap_overlay_command (args
, from_tty
)
2900 struct objfile
*objfile
;
2901 struct obj_section
*sec
;
2903 if (!overlay_debugging
)
2905 Overlay debugging not enabled. Use either the 'overlay auto' or\n\
2906 the 'overlay manual' command.");
2908 if (args
== 0 || *args
== 0)
2909 error ("Argument required: name of an overlay section");
2911 /* First, find a section matching the user supplied argument */
2912 ALL_OBJSECTIONS (objfile
, sec
)
2913 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
2915 if (!sec
->ovly_mapped
)
2916 error ("Section %s is not mapped", args
);
2917 sec
->ovly_mapped
= 0;
2920 error ("No overlay section called %s", args
);
2923 /* Function: overlay_auto_command
2924 A utility command to turn on overlay debugging.
2925 Possibly this should be done via a set/show command. */
2928 overlay_auto_command (args
, from_tty
)
2932 overlay_debugging
= -1;
2934 printf_filtered ("Automatic overlay debugging enabled.");
2937 /* Function: overlay_manual_command
2938 A utility command to turn on overlay debugging.
2939 Possibly this should be done via a set/show command. */
2942 overlay_manual_command (args
, from_tty
)
2946 overlay_debugging
= 1;
2948 printf_filtered ("Overlay debugging enabled.");
2951 /* Function: overlay_off_command
2952 A utility command to turn on overlay debugging.
2953 Possibly this should be done via a set/show command. */
2956 overlay_off_command (args
, from_tty
)
2960 overlay_debugging
= 0;
2962 printf_filtered ("Overlay debugging disabled.");
2966 overlay_load_command (args
, from_tty
)
2970 if (target_overlay_update
)
2971 (*target_overlay_update
) (NULL
);
2973 error ("This target does not know how to read its overlay state.");
2976 /* Function: overlay_command
2977 A place-holder for a mis-typed command */
2979 /* Command list chain containing all defined "overlay" subcommands. */
2980 struct cmd_list_element
*overlaylist
;
2983 overlay_command (args
, from_tty
)
2988 ("\"overlay\" must be followed by the name of an overlay command.\n");
2989 help_list (overlaylist
, "overlay ", -1, gdb_stdout
);
2993 /* Target Overlays for the "Simplest" overlay manager:
2995 This is GDB's default target overlay layer. It works with the
2996 minimal overlay manager supplied as an example by Cygnus. The
2997 entry point is via a function pointer "target_overlay_update",
2998 so targets that use a different runtime overlay manager can
2999 substitute their own overlay_update function and take over the
3002 The overlay_update function pokes around in the target's data structures
3003 to see what overlays are mapped, and updates GDB's overlay mapping with
3006 In this simple implementation, the target data structures are as follows:
3007 unsigned _novlys; /# number of overlay sections #/
3008 unsigned _ovly_table[_novlys][4] = {
3009 {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/
3010 {..., ..., ..., ...},
3012 unsigned _novly_regions; /# number of overlay regions #/
3013 unsigned _ovly_region_table[_novly_regions][3] = {
3014 {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/
3017 These functions will attempt to update GDB's mappedness state in the
3018 symbol section table, based on the target's mappedness state.
3020 To do this, we keep a cached copy of the target's _ovly_table, and
3021 attempt to detect when the cached copy is invalidated. The main
3022 entry point is "simple_overlay_update(SECT), which looks up SECT in
3023 the cached table and re-reads only the entry for that section from
3024 the target (whenever possible).
3027 /* Cached, dynamically allocated copies of the target data structures: */
3028 static unsigned (*cache_ovly_table
)[4] = 0;
3030 static unsigned (*cache_ovly_region_table
)[3] = 0;
3032 static unsigned cache_novlys
= 0;
3034 static unsigned cache_novly_regions
= 0;
3036 static CORE_ADDR cache_ovly_table_base
= 0;
3038 static CORE_ADDR cache_ovly_region_table_base
= 0;
3042 VMA
, SIZE
, LMA
, MAPPED
3044 #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT)
3046 /* Throw away the cached copy of _ovly_table */
3048 simple_free_overlay_table ()
3050 if (cache_ovly_table
)
3051 free (cache_ovly_table
);
3053 cache_ovly_table
= NULL
;
3054 cache_ovly_table_base
= 0;
3058 /* Throw away the cached copy of _ovly_region_table */
3060 simple_free_overlay_region_table ()
3062 if (cache_ovly_region_table
)
3063 free (cache_ovly_region_table
);
3064 cache_novly_regions
= 0;
3065 cache_ovly_region_table
= NULL
;
3066 cache_ovly_region_table_base
= 0;
3070 /* Read an array of ints from the target into a local buffer.
3071 Convert to host order. int LEN is number of ints */
3073 read_target_long_array (memaddr
, myaddr
, len
)
3075 unsigned int *myaddr
;
3078 char *buf
= alloca (len
* TARGET_LONG_BYTES
);
3081 read_memory (memaddr
, buf
, len
* TARGET_LONG_BYTES
);
3082 for (i
= 0; i
< len
; i
++)
3083 myaddr
[i
] = extract_unsigned_integer (TARGET_LONG_BYTES
* i
+ buf
,
3087 /* Find and grab a copy of the target _ovly_table
3088 (and _novlys, which is needed for the table's size) */
3090 simple_read_overlay_table ()
3092 struct minimal_symbol
*msym
;
3094 simple_free_overlay_table ();
3095 msym
= lookup_minimal_symbol ("_novlys", 0, 0);
3097 cache_novlys
= read_memory_integer (SYMBOL_VALUE_ADDRESS (msym
), 4);
3099 return 0; /* failure */
3100 cache_ovly_table
= (void *) xmalloc (cache_novlys
* sizeof (*cache_ovly_table
));
3101 if (cache_ovly_table
!= NULL
)
3103 msym
= lookup_minimal_symbol ("_ovly_table", 0, 0);
3106 cache_ovly_table_base
= SYMBOL_VALUE_ADDRESS (msym
);
3107 read_target_long_array (cache_ovly_table_base
,
3108 (int *) cache_ovly_table
,
3112 return 0; /* failure */
3115 return 0; /* failure */
3116 return 1; /* SUCCESS */
3120 /* Find and grab a copy of the target _ovly_region_table
3121 (and _novly_regions, which is needed for the table's size) */
3123 simple_read_overlay_region_table ()
3125 struct minimal_symbol
*msym
;
3127 simple_free_overlay_region_table ();
3128 msym
= lookup_minimal_symbol ("_novly_regions", 0, 0);
3130 cache_novly_regions
= read_memory_integer (SYMBOL_VALUE_ADDRESS (msym
), 4);
3132 return 0; /* failure */
3133 cache_ovly_region_table
= (void *) xmalloc (cache_novly_regions
* 12);
3134 if (cache_ovly_region_table
!= NULL
)
3136 msym
= lookup_minimal_symbol ("_ovly_region_table", 0, 0);
3139 cache_ovly_region_table_base
= SYMBOL_VALUE_ADDRESS (msym
);
3140 read_target_long_array (cache_ovly_region_table_base
,
3141 (int *) cache_ovly_region_table
,
3142 cache_novly_regions
* 3);
3145 return 0; /* failure */
3148 return 0; /* failure */
3149 return 1; /* SUCCESS */
3153 /* Function: simple_overlay_update_1
3154 A helper function for simple_overlay_update. Assuming a cached copy
3155 of _ovly_table exists, look through it to find an entry whose vma,
3156 lma and size match those of OSECT. Re-read the entry and make sure
3157 it still matches OSECT (else the table may no longer be valid).
3158 Set OSECT's mapped state to match the entry. Return: 1 for
3159 success, 0 for failure. */
3162 simple_overlay_update_1 (osect
)
3163 struct obj_section
*osect
;
3167 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
3168 for (i
= 0; i
< cache_novlys
; i
++)
3169 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3170 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3171 cache_ovly_table[i][SIZE] == size */ )
3173 read_target_long_array (cache_ovly_table_base
+ i
* TARGET_LONG_BYTES
,
3174 (int *) cache_ovly_table
[i
], 4);
3175 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3176 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3177 cache_ovly_table[i][SIZE] == size */ )
3179 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3182 else /* Warning! Warning! Target's ovly table has changed! */
3188 /* Function: simple_overlay_update
3189 If OSECT is NULL, then update all sections' mapped state
3190 (after re-reading the entire target _ovly_table).
3191 If OSECT is non-NULL, then try to find a matching entry in the
3192 cached ovly_table and update only OSECT's mapped state.
3193 If a cached entry can't be found or the cache isn't valid, then
3194 re-read the entire cache, and go ahead and update all sections. */
3197 simple_overlay_update (osect
)
3198 struct obj_section
*osect
;
3200 struct objfile
*objfile
;
3202 /* Were we given an osect to look up? NULL means do all of them. */
3204 /* Have we got a cached copy of the target's overlay table? */
3205 if (cache_ovly_table
!= NULL
)
3206 /* Does its cached location match what's currently in the symtab? */
3207 if (cache_ovly_table_base
==
3208 SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0)))
3209 /* Then go ahead and try to look up this single section in the cache */
3210 if (simple_overlay_update_1 (osect
))
3211 /* Found it! We're done. */
3214 /* Cached table no good: need to read the entire table anew.
3215 Or else we want all the sections, in which case it's actually
3216 more efficient to read the whole table in one block anyway. */
3218 if (simple_read_overlay_table () == 0) /* read failed? No table? */
3220 warning ("Failed to read the target overlay mapping table.");
3223 /* Now may as well update all sections, even if only one was requested. */
3224 ALL_OBJSECTIONS (objfile
, osect
)
3225 if (section_is_overlay (osect
->the_bfd_section
))
3229 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
3230 for (i
= 0; i
< cache_novlys
; i
++)
3231 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3232 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3233 cache_ovly_table[i][SIZE] == size */ )
3234 { /* obj_section matches i'th entry in ovly_table */
3235 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3236 break; /* finished with inner for loop: break out */
3243 _initialize_symfile ()
3245 struct cmd_list_element
*c
;
3247 c
= add_cmd ("symbol-file", class_files
, symbol_file_command
,
3248 "Load symbol table from executable file FILE.\n\
3249 The `file' command can also load symbol tables, as well as setting the file\n\
3250 to execute.", &cmdlist
);
3251 c
->completer
= filename_completer
;
3253 c
= add_cmd ("add-symbol-file", class_files
, add_symbol_file_command
,
3254 "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\
3255 Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\
3256 ADDR is the starting address of the file's text.\n\
3257 The optional arguments are section-name section-address pairs and\n\
3258 should be specified if the data and bss segments are not contiguous\n\
3259 with the text. SECT is a section name to be loaded at SECT_ADDR.",
3261 c
->completer
= filename_completer
;
3263 c
= add_cmd ("add-shared-symbol-files", class_files
,
3264 add_shared_symbol_files_command
,
3265 "Load the symbols from shared objects in the dynamic linker's link map.",
3267 c
= add_alias_cmd ("assf", "add-shared-symbol-files", class_files
, 1,
3270 c
= add_cmd ("load", class_files
, load_command
,
3271 "Dynamically load FILE into the running program, and record its symbols\n\
3272 for access from GDB.", &cmdlist
);
3273 c
->completer
= filename_completer
;
3276 (add_set_cmd ("symbol-reloading", class_support
, var_boolean
,
3277 (char *) &symbol_reloading
,
3278 "Set dynamic symbol table reloading multiple times in one run.",
3282 add_prefix_cmd ("overlay", class_support
, overlay_command
,
3283 "Commands for debugging overlays.", &overlaylist
,
3284 "overlay ", 0, &cmdlist
);
3286 add_com_alias ("ovly", "overlay", class_alias
, 1);
3287 add_com_alias ("ov", "overlay", class_alias
, 1);
3289 add_cmd ("map-overlay", class_support
, map_overlay_command
,
3290 "Assert that an overlay section is mapped.", &overlaylist
);
3292 add_cmd ("unmap-overlay", class_support
, unmap_overlay_command
,
3293 "Assert that an overlay section is unmapped.", &overlaylist
);
3295 add_cmd ("list-overlays", class_support
, list_overlays_command
,
3296 "List mappings of overlay sections.", &overlaylist
);
3298 add_cmd ("manual", class_support
, overlay_manual_command
,
3299 "Enable overlay debugging.", &overlaylist
);
3300 add_cmd ("off", class_support
, overlay_off_command
,
3301 "Disable overlay debugging.", &overlaylist
);
3302 add_cmd ("auto", class_support
, overlay_auto_command
,
3303 "Enable automatic overlay debugging.", &overlaylist
);
3304 add_cmd ("load-target", class_support
, overlay_load_command
,
3305 "Read the overlay mapping state from the target.", &overlaylist
);
3307 /* Filename extension to source language lookup table: */
3308 init_filename_language_table ();
3309 c
= add_set_cmd ("extension-language", class_files
, var_string_noescape
,
3311 "Set mapping between filename extension and source language.\n\
3312 Usage: set extension-language .foo bar",
3314 c
->function
.cfunc
= set_ext_lang_command
;
3316 add_info ("extensions", info_ext_lang_command
,
3317 "All filename extensions associated with a source language.");
3320 (add_set_cmd ("download-write-size", class_obscure
,
3321 var_integer
, (char *) &download_write_size
,
3322 "Set the write size used when downloading a program.\n"
3323 "Only used when downloading a program onto a remote\n"
3324 "target. Specify zero, or a negative value, to disable\n"
3325 "blocked writes. The actual size of each transfer is also\n"
3326 "limited by the size of the target packet and the memory\n"