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 (const PTR s1p
, const PTR s2p
)
211 register struct symbol
**s1
, **s2
;
213 s1
= (struct symbol
**) s1p
;
214 s2
= (struct symbol
**) s2p
;
216 return (STRCMP (SYMBOL_NAME (*s1
), SYMBOL_NAME (*s2
)));
223 compare_psymbols -- compare two partial symbols by name
227 Given pointers to pointers to two partial symbol table entries,
228 compare them by name and return -N, 0, or +N (ala strcmp).
229 Typically used by sorting routines like qsort().
233 Does direct compare of first two characters before punting
234 and passing to strcmp for longer compares. Note that the
235 original version had a bug whereby two null strings or two
236 identically named one character strings would return the
237 comparison of memory following the null byte.
242 compare_psymbols (const PTR s1p
, const PTR s2p
)
244 register char *st1
= SYMBOL_NAME (*(struct partial_symbol
**) s1p
);
245 register char *st2
= SYMBOL_NAME (*(struct partial_symbol
**) s2p
);
247 if ((st1
[0] - st2
[0]) || !st1
[0])
249 return (st1
[0] - st2
[0]);
251 else if ((st1
[1] - st2
[1]) || !st1
[1])
253 return (st1
[1] - st2
[1]);
257 /* Note: I replaced the STRCMP line (commented out below)
258 * with a simpler "strcmp()" which compares the 2 strings
259 * from the beginning. (STRCMP is a macro which first compares
260 * the initial characters, then falls back on strcmp).
261 * The reason is that the STRCMP line was tickling a C compiler
262 * bug on HP-UX 10.30, which is avoided with the simpler
263 * code. The performance gain from the more complicated code
264 * is negligible, given that we have already checked the
265 * initial 2 characters above. I reported the compiler bug,
266 * and once it is fixed the original line can be put back. RT
268 /* return ( STRCMP (st1 + 2, st2 + 2)); */
269 return (strcmp (st1
, st2
));
274 sort_pst_symbols (struct partial_symtab
*pst
)
276 /* Sort the global list; don't sort the static list */
278 qsort (pst
->objfile
->global_psymbols
.list
+ pst
->globals_offset
,
279 pst
->n_global_syms
, sizeof (struct partial_symbol
*),
283 /* Call sort_block_syms to sort alphabetically the symbols of one block. */
286 sort_block_syms (register struct block
*b
)
288 qsort (&BLOCK_SYM (b
, 0), BLOCK_NSYMS (b
),
289 sizeof (struct symbol
*), compare_symbols
);
292 /* Call sort_symtab_syms to sort alphabetically
293 the symbols of each block of one symtab. */
296 sort_symtab_syms (register struct symtab
*s
)
298 register struct blockvector
*bv
;
301 register struct block
*b
;
305 bv
= BLOCKVECTOR (s
);
306 nbl
= BLOCKVECTOR_NBLOCKS (bv
);
307 for (i
= 0; i
< nbl
; i
++)
309 b
= BLOCKVECTOR_BLOCK (bv
, i
);
310 if (BLOCK_SHOULD_SORT (b
))
315 /* Make a null terminated copy of the string at PTR with SIZE characters in
316 the obstack pointed to by OBSTACKP . Returns the address of the copy.
317 Note that the string at PTR does not have to be null terminated, I.E. it
318 may be part of a larger string and we are only saving a substring. */
321 obsavestring (char *ptr
, int size
, struct obstack
*obstackp
)
323 register char *p
= (char *) obstack_alloc (obstackp
, size
+ 1);
324 /* Open-coded memcpy--saves function call time. These strings are usually
325 short. FIXME: Is this really still true with a compiler that can
328 register char *p1
= ptr
;
329 register char *p2
= p
;
330 char *end
= ptr
+ size
;
338 /* Concatenate strings S1, S2 and S3; return the new string. Space is found
339 in the obstack pointed to by OBSTACKP. */
342 obconcat (struct obstack
*obstackp
, const char *s1
, const char *s2
,
345 register int len
= strlen (s1
) + strlen (s2
) + strlen (s3
) + 1;
346 register char *val
= (char *) obstack_alloc (obstackp
, len
);
353 /* True if we are nested inside psymtab_to_symtab. */
355 int currently_reading_symtab
= 0;
358 decrement_reading_symtab (void *dummy
)
360 currently_reading_symtab
--;
363 /* Get the symbol table that corresponds to a partial_symtab.
364 This is fast after the first time you do it. In fact, there
365 is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
369 psymtab_to_symtab (register struct partial_symtab
*pst
)
371 /* If it's been looked up before, return it. */
375 /* If it has not yet been read in, read it. */
378 struct cleanup
*back_to
= make_cleanup (decrement_reading_symtab
, NULL
);
379 currently_reading_symtab
++;
380 (*pst
->read_symtab
) (pst
);
381 do_cleanups (back_to
);
387 /* Initialize entry point information for this objfile. */
390 init_entry_point_info (struct objfile
*objfile
)
392 /* Save startup file's range of PC addresses to help blockframe.c
393 decide where the bottom of the stack is. */
395 if (bfd_get_file_flags (objfile
->obfd
) & EXEC_P
)
397 /* Executable file -- record its entry point so we'll recognize
398 the startup file because it contains the entry point. */
399 objfile
->ei
.entry_point
= bfd_get_start_address (objfile
->obfd
);
403 /* Examination of non-executable.o files. Short-circuit this stuff. */
404 objfile
->ei
.entry_point
= INVALID_ENTRY_POINT
;
406 objfile
->ei
.entry_file_lowpc
= INVALID_ENTRY_LOWPC
;
407 objfile
->ei
.entry_file_highpc
= INVALID_ENTRY_HIGHPC
;
408 objfile
->ei
.entry_func_lowpc
= INVALID_ENTRY_LOWPC
;
409 objfile
->ei
.entry_func_highpc
= INVALID_ENTRY_HIGHPC
;
410 objfile
->ei
.main_func_lowpc
= INVALID_ENTRY_LOWPC
;
411 objfile
->ei
.main_func_highpc
= INVALID_ENTRY_HIGHPC
;
414 /* Get current entry point address. */
417 entry_point_address (void)
419 return symfile_objfile
? symfile_objfile
->ei
.entry_point
: 0;
422 /* Remember the lowest-addressed loadable section we've seen.
423 This function is called via bfd_map_over_sections.
425 In case of equal vmas, the section with the largest size becomes the
426 lowest-addressed loadable section.
428 If the vmas and sizes are equal, the last section is considered the
429 lowest-addressed loadable section. */
432 find_lowest_section (bfd
*abfd
, asection
*sect
, PTR obj
)
434 asection
**lowest
= (asection
**) obj
;
436 if (0 == (bfd_get_section_flags (abfd
, sect
) & SEC_LOAD
))
439 *lowest
= sect
; /* First loadable section */
440 else if (bfd_section_vma (abfd
, *lowest
) > bfd_section_vma (abfd
, sect
))
441 *lowest
= sect
; /* A lower loadable section */
442 else if (bfd_section_vma (abfd
, *lowest
) == bfd_section_vma (abfd
, sect
)
443 && (bfd_section_size (abfd
, (*lowest
))
444 <= bfd_section_size (abfd
, sect
)))
449 /* Build (allocate and populate) a section_addr_info struct from
450 an existing section table. */
452 extern struct section_addr_info
*
453 build_section_addr_info_from_section_table (const struct section_table
*start
,
454 const struct section_table
*end
)
456 struct section_addr_info
*sap
;
457 const struct section_table
*stp
;
460 sap
= xmalloc (sizeof (struct section_addr_info
));
461 memset (sap
, 0, sizeof (struct section_addr_info
));
463 for (stp
= start
, oidx
= 0; stp
!= end
; stp
++)
465 if (stp
->the_bfd_section
->flags
& (SEC_ALLOC
| SEC_LOAD
)
466 && oidx
< MAX_SECTIONS
)
468 sap
->other
[oidx
].addr
= stp
->addr
;
469 sap
->other
[oidx
].name
= xstrdup (stp
->the_bfd_section
->name
);
470 sap
->other
[oidx
].sectindex
= stp
->the_bfd_section
->index
;
479 /* Free all memory allocated by build_section_addr_info_from_section_table. */
482 free_section_addr_info (struct section_addr_info
*sap
)
486 for (idx
= 0; idx
< MAX_SECTIONS
; idx
++)
487 if (sap
->other
[idx
].name
)
488 free (sap
->other
[idx
].name
);
493 /* Parse the user's idea of an offset for dynamic linking, into our idea
494 of how to represent it for fast symbol reading. This is the default
495 version of the sym_fns.sym_offsets function for symbol readers that
496 don't need to do anything special. It allocates a section_offsets table
497 for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
500 default_symfile_offsets (struct objfile
*objfile
,
501 struct section_addr_info
*addrs
)
504 asection
*sect
= NULL
;
506 objfile
->num_sections
= SECT_OFF_MAX
;
507 objfile
->section_offsets
= (struct section_offsets
*)
508 obstack_alloc (&objfile
->psymbol_obstack
, SIZEOF_SECTION_OFFSETS
);
509 memset (objfile
->section_offsets
, 0, SIZEOF_SECTION_OFFSETS
);
511 /* Now calculate offsets for section that were specified by the
513 for (i
= 0; i
< MAX_SECTIONS
&& addrs
->other
[i
].name
; i
++)
515 struct other_sections
*osp
;
517 osp
= &addrs
->other
[i
] ;
521 /* Record all sections in offsets */
522 /* The section_offsets in the objfile are here filled in using
524 (objfile
->section_offsets
)->offsets
[osp
->sectindex
] = osp
->addr
;
527 /* Remember the bfd indexes for the .text, .data, .bss and
530 sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
532 objfile
->sect_index_text
= sect
->index
;
534 sect
= bfd_get_section_by_name (objfile
->obfd
, ".data");
536 objfile
->sect_index_data
= sect
->index
;
538 sect
= bfd_get_section_by_name (objfile
->obfd
, ".bss");
540 objfile
->sect_index_bss
= sect
->index
;
542 sect
= bfd_get_section_by_name (objfile
->obfd
, ".rodata");
544 objfile
->sect_index_rodata
= sect
->index
;
548 /* Process a symbol file, as either the main file or as a dynamically
551 OBJFILE is where the symbols are to be read from.
553 ADDR is the address where the text segment was loaded, unless the
554 objfile is the main symbol file, in which case it is zero.
556 MAINLINE is nonzero if this is the main symbol file, or zero if
557 it's an extra symbol file such as dynamically loaded code.
559 VERBO is nonzero if the caller has printed a verbose message about
560 the symbol reading (and complaints can be more terse about it). */
563 syms_from_objfile (struct objfile
*objfile
, struct section_addr_info
*addrs
,
564 int mainline
, int verbo
)
566 asection
*lower_sect
;
568 CORE_ADDR lower_offset
;
569 struct section_addr_info local_addr
;
570 struct cleanup
*old_chain
;
573 /* If ADDRS is NULL, initialize the local section_addr_info struct and
574 point ADDRS to it. We now establish the convention that an addr of
575 zero means no load address was specified. */
579 memset (&local_addr
, 0, sizeof (local_addr
));
583 init_entry_point_info (objfile
);
584 find_sym_fns (objfile
);
586 /* Make sure that partially constructed symbol tables will be cleaned up
587 if an error occurs during symbol reading. */
588 old_chain
= make_cleanup_free_objfile (objfile
);
592 /* We will modify the main symbol table, make sure that all its users
593 will be cleaned up if an error occurs during symbol reading. */
594 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
596 /* Since no error yet, throw away the old symbol table. */
598 if (symfile_objfile
!= NULL
)
600 free_objfile (symfile_objfile
);
601 symfile_objfile
= NULL
;
604 /* Currently we keep symbols from the add-symbol-file command.
605 If the user wants to get rid of them, they should do "symbol-file"
606 without arguments first. Not sure this is the best behavior
609 (*objfile
->sf
->sym_new_init
) (objfile
);
612 /* Convert addr into an offset rather than an absolute address.
613 We find the lowest address of a loaded segment in the objfile,
614 and assume that <addr> is where that got loaded.
616 We no longer warn if the lowest section is not a text segment (as
617 happens for the PA64 port. */
620 /* Find lowest loadable section to be used as starting point for
621 continguous sections. FIXME!! won't work without call to find
622 .text first, but this assumes text is lowest section. */
623 lower_sect
= bfd_get_section_by_name (objfile
->obfd
, ".text");
624 if (lower_sect
== NULL
)
625 bfd_map_over_sections (objfile
->obfd
, find_lowest_section
,
627 if (lower_sect
== NULL
)
628 warning ("no loadable sections found in added symbol-file %s",
631 if ((bfd_get_section_flags (objfile
->obfd
, lower_sect
) & SEC_CODE
) == 0)
632 warning ("Lowest section in %s is %s at %s",
634 bfd_section_name (objfile
->obfd
, lower_sect
),
635 paddr (bfd_section_vma (objfile
->obfd
, lower_sect
)));
636 if (lower_sect
!= NULL
)
637 lower_offset
= bfd_section_vma (objfile
->obfd
, lower_sect
);
641 /* Calculate offsets for the loadable sections.
642 FIXME! Sections must be in order of increasing loadable section
643 so that contiguous sections can use the lower-offset!!!
645 Adjust offsets if the segments are not contiguous.
646 If the section is contiguous, its offset should be set to
647 the offset of the highest loadable section lower than it
648 (the loadable section directly below it in memory).
649 this_offset = lower_offset = lower_addr - lower_orig_addr */
651 /* Calculate offsets for sections. */
652 for (i
=0 ; i
< MAX_SECTIONS
&& addrs
->other
[i
].name
; i
++)
654 if (addrs
->other
[i
].addr
!= 0)
656 sect
= bfd_get_section_by_name (objfile
->obfd
, addrs
->other
[i
].name
);
659 addrs
->other
[i
].addr
-= bfd_section_vma (objfile
->obfd
, sect
);
660 lower_offset
= addrs
->other
[i
].addr
;
661 /* This is the index used by BFD. */
662 addrs
->other
[i
].sectindex
= sect
->index
;
666 warning ("section %s not found in %s", addrs
->other
[i
].name
,
668 addrs
->other
[i
].addr
= 0;
672 addrs
->other
[i
].addr
= lower_offset
;
676 /* Initialize symbol reading routines for this objfile, allow complaints to
677 appear for this new file, and record how verbose to be, then do the
678 initial symbol reading for this file. */
680 (*objfile
->sf
->sym_init
) (objfile
);
681 clear_complaints (1, verbo
);
683 (*objfile
->sf
->sym_offsets
) (objfile
, addrs
);
685 #ifndef IBM6000_TARGET
686 /* This is a SVR4/SunOS specific hack, I think. In any event, it
687 screws RS/6000. sym_offsets should be doing this sort of thing,
688 because it knows the mapping between bfd sections and
690 /* This is a hack. As far as I can tell, section offsets are not
691 target dependent. They are all set to addr with a couple of
692 exceptions. The exceptions are sysvr4 shared libraries, whose
693 offsets are kept in solib structures anyway and rs6000 xcoff
694 which handles shared libraries in a completely unique way.
696 Section offsets are built similarly, except that they are built
697 by adding addr in all cases because there is no clear mapping
698 from section_offsets into actual sections. Note that solib.c
699 has a different algorithm for finding section offsets.
701 These should probably all be collapsed into some target
702 independent form of shared library support. FIXME. */
706 struct obj_section
*s
;
708 /* Map section offsets in "addr" back to the object's
709 sections by comparing the section names with bfd's
710 section names. Then adjust the section address by
711 the offset. */ /* for gdb/13815 */
713 ALL_OBJFILE_OSECTIONS (objfile
, s
)
715 CORE_ADDR s_addr
= 0;
719 !s_addr
&& i
< MAX_SECTIONS
&& addrs
->other
[i
].name
;
721 if (strcmp (s
->the_bfd_section
->name
, addrs
->other
[i
].name
) == 0)
722 s_addr
= addrs
->other
[i
].addr
; /* end added for gdb/13815 */
724 s
->addr
-= s
->offset
;
726 s
->endaddr
-= s
->offset
;
727 s
->endaddr
+= s_addr
;
731 #endif /* not IBM6000_TARGET */
733 (*objfile
->sf
->sym_read
) (objfile
, mainline
);
735 if (!have_partial_symbols () && !have_full_symbols ())
738 printf_filtered ("(no debugging symbols found)...");
742 /* Don't allow char * to have a typename (else would get caddr_t).
743 Ditto void *. FIXME: Check whether this is now done by all the
744 symbol readers themselves (many of them now do), and if so remove
747 TYPE_NAME (lookup_pointer_type (builtin_type_char
)) = 0;
748 TYPE_NAME (lookup_pointer_type (builtin_type_void
)) = 0;
750 /* Mark the objfile has having had initial symbol read attempted. Note
751 that this does not mean we found any symbols... */
753 objfile
->flags
|= OBJF_SYMS
;
755 /* Discard cleanups as symbol reading was successful. */
757 discard_cleanups (old_chain
);
759 /* Call this after reading in a new symbol table to give target
760 dependant code a crack at the new symbols. For instance, this
761 could be used to update the values of target-specific symbols GDB
762 needs to keep track of (such as _sigtramp, or whatever). */
764 TARGET_SYMFILE_POSTREAD (objfile
);
767 /* Perform required actions after either reading in the initial
768 symbols for a new objfile, or mapping in the symbols from a reusable
772 new_symfile_objfile (struct objfile
*objfile
, int mainline
, int verbo
)
775 /* If this is the main symbol file we have to clean up all users of the
776 old main symbol file. Otherwise it is sufficient to fixup all the
777 breakpoints that may have been redefined by this symbol file. */
780 /* OK, make it the "real" symbol file. */
781 symfile_objfile
= objfile
;
783 clear_symtab_users ();
787 breakpoint_re_set ();
790 /* We're done reading the symbol file; finish off complaints. */
791 clear_complaints (0, verbo
);
794 /* Process a symbol file, as either the main file or as a dynamically
797 NAME is the file name (which will be tilde-expanded and made
798 absolute herein) (but we don't free or modify NAME itself).
799 FROM_TTY says how verbose to be. MAINLINE specifies whether this
800 is the main symbol file, or whether it's an extra symbol file such
801 as dynamically loaded code. If !mainline, ADDR is the address
802 where the text segment was loaded.
804 Upon success, returns a pointer to the objfile that was added.
805 Upon failure, jumps back to command level (never returns). */
808 symbol_file_add (char *name
, int from_tty
, struct section_addr_info
*addrs
,
809 int mainline
, int flags
)
811 struct objfile
*objfile
;
812 struct partial_symtab
*psymtab
;
815 /* Open a bfd for the file, and give user a chance to burp if we'd be
816 interactively wiping out any existing symbols. */
818 abfd
= symfile_bfd_open (name
);
820 if ((have_full_symbols () || have_partial_symbols ())
823 && !query ("Load new symbol table from \"%s\"? ", name
))
824 error ("Not confirmed.");
826 objfile
= allocate_objfile (abfd
, flags
);
828 /* If the objfile uses a mapped symbol file, and we have a psymtab for
829 it, then skip reading any symbols at this time. */
831 if ((objfile
->flags
& OBJF_MAPPED
) && (objfile
->flags
& OBJF_SYMS
))
833 /* We mapped in an existing symbol table file that already has had
834 initial symbol reading performed, so we can skip that part. Notify
835 the user that instead of reading the symbols, they have been mapped.
837 if (from_tty
|| info_verbose
)
839 printf_filtered ("Mapped symbols for %s...", name
);
841 gdb_flush (gdb_stdout
);
843 init_entry_point_info (objfile
);
844 find_sym_fns (objfile
);
848 /* We either created a new mapped symbol table, mapped an existing
849 symbol table file which has not had initial symbol reading
850 performed, or need to read an unmapped symbol table. */
851 if (from_tty
|| info_verbose
)
853 if (pre_add_symbol_hook
)
854 pre_add_symbol_hook (name
);
857 printf_filtered ("Reading symbols from %s...", name
);
859 gdb_flush (gdb_stdout
);
862 syms_from_objfile (objfile
, addrs
, mainline
, from_tty
);
865 /* We now have at least a partial symbol table. Check to see if the
866 user requested that all symbols be read on initial access via either
867 the gdb startup command line or on a per symbol file basis. Expand
868 all partial symbol tables for this objfile if so. */
870 if ((flags
& OBJF_READNOW
) || readnow_symbol_files
)
872 if (from_tty
|| info_verbose
)
874 printf_filtered ("expanding to full symbols...");
876 gdb_flush (gdb_stdout
);
879 for (psymtab
= objfile
->psymtabs
;
881 psymtab
= psymtab
->next
)
883 psymtab_to_symtab (psymtab
);
887 if (from_tty
|| info_verbose
)
889 if (post_add_symbol_hook
)
890 post_add_symbol_hook ();
893 printf_filtered ("done.\n");
894 gdb_flush (gdb_stdout
);
898 new_symfile_objfile (objfile
, mainline
, from_tty
);
900 if (target_new_objfile_hook
)
901 target_new_objfile_hook (objfile
);
906 /* This is the symbol-file command. Read the file, analyze its
907 symbols, and add a struct symtab to a symtab list. The syntax of
908 the command is rather bizarre--(1) buildargv implements various
909 quoting conventions which are undocumented and have little or
910 nothing in common with the way things are quoted (or not quoted)
911 elsewhere in GDB, (2) options are used, which are not generally
912 used in GDB (perhaps "set mapped on", "set readnow on" would be
913 better), (3) the order of options matters, which is contrary to GNU
914 conventions (because it is confusing and inconvenient). */
915 /* Note: ezannoni 2000-04-17. This function used to have support for
916 rombug (see remote-os9k.c). It consisted of a call to target_link()
917 (target.c) to get the address of the text segment from the target,
918 and pass that to symbol_file_add(). This is no longer supported. */
921 symbol_file_command (char *args
, int from_tty
)
925 struct cleanup
*cleanups
;
926 int flags
= OBJF_USERLOADED
;
932 if ((have_full_symbols () || have_partial_symbols ())
934 && !query ("Discard symbol table from `%s'? ",
935 symfile_objfile
->name
))
936 error ("Not confirmed.");
937 free_all_objfiles ();
939 /* solib descriptors may have handles to objfiles. Since their
940 storage has just been released, we'd better wipe the solib
943 #if defined(SOLIB_RESTART)
947 symfile_objfile
= NULL
;
949 printf_unfiltered ("No symbol file now.\n");
951 RESET_HP_UX_GLOBALS ();
956 if ((argv
= buildargv (args
)) == NULL
)
960 cleanups
= make_cleanup_freeargv (argv
);
961 while (*argv
!= NULL
)
963 if (STREQ (*argv
, "-mapped"))
964 flags
|= OBJF_MAPPED
;
966 if (STREQ (*argv
, "-readnow"))
967 flags
|= OBJF_READNOW
;
970 error ("unknown option `%s'", *argv
);
974 symbol_file_add (name
, from_tty
, NULL
, 1, flags
);
976 RESET_HP_UX_GLOBALS ();
978 /* Getting new symbols may change our opinion about
979 what is frameless. */
980 reinit_frame_cache ();
982 set_initial_language ();
989 error ("no symbol file name was specified");
991 TUIDO (((TuiOpaqueFuncPtr
) tuiDisplayMainFunction
));
992 do_cleanups (cleanups
);
996 /* Set the initial language.
998 A better solution would be to record the language in the psymtab when reading
999 partial symbols, and then use it (if known) to set the language. This would
1000 be a win for formats that encode the language in an easily discoverable place,
1001 such as DWARF. For stabs, we can jump through hoops looking for specially
1002 named symbols or try to intuit the language from the specific type of stabs
1003 we find, but we can't do that until later when we read in full symbols.
1007 set_initial_language (void)
1009 struct partial_symtab
*pst
;
1010 enum language lang
= language_unknown
;
1012 pst
= find_main_psymtab ();
1015 if (pst
->filename
!= NULL
)
1017 lang
= deduce_language_from_filename (pst
->filename
);
1019 if (lang
== language_unknown
)
1021 /* Make C the default language */
1024 set_language (lang
);
1025 expected_language
= current_language
; /* Don't warn the user */
1029 /* Open file specified by NAME and hand it off to BFD for preliminary
1030 analysis. Result is a newly initialized bfd *, which includes a newly
1031 malloc'd` copy of NAME (tilde-expanded and made absolute).
1032 In case of trouble, error() is called. */
1035 symfile_bfd_open (char *name
)
1039 char *absolute_name
;
1043 name
= tilde_expand (name
); /* Returns 1st new malloc'd copy */
1045 /* Look down path for it, allocate 2nd new malloc'd copy. */
1046 desc
= openp (getenv ("PATH"), 1, name
, O_RDONLY
| O_BINARY
, 0, &absolute_name
);
1047 #if defined(__GO32__) || defined(_WIN32)
1050 char *exename
= alloca (strlen (name
) + 5);
1051 strcat (strcpy (exename
, name
), ".exe");
1052 desc
= openp (getenv ("PATH"), 1, exename
, O_RDONLY
| O_BINARY
,
1058 make_cleanup (free
, name
);
1059 perror_with_name (name
);
1061 free (name
); /* Free 1st new malloc'd copy */
1062 name
= absolute_name
; /* Keep 2nd malloc'd copy in bfd */
1063 /* It'll be freed in free_objfile(). */
1065 sym_bfd
= bfd_fdopenr (name
, gnutarget
, desc
);
1069 make_cleanup (free
, name
);
1070 error ("\"%s\": can't open to read symbols: %s.", name
,
1071 bfd_errmsg (bfd_get_error ()));
1073 sym_bfd
->cacheable
= true;
1075 if (!bfd_check_format (sym_bfd
, bfd_object
))
1077 /* FIXME: should be checking for errors from bfd_close (for one thing,
1078 on error it does not free all the storage associated with the
1080 bfd_close (sym_bfd
); /* This also closes desc */
1081 make_cleanup (free
, name
);
1082 error ("\"%s\": can't read symbols: %s.", name
,
1083 bfd_errmsg (bfd_get_error ()));
1088 /* Link a new symtab_fns into the global symtab_fns list. Called on gdb
1089 startup by the _initialize routine in each object file format reader,
1090 to register information about each format the the reader is prepared
1094 add_symtab_fns (struct sym_fns
*sf
)
1096 sf
->next
= symtab_fns
;
1101 /* Initialize to read symbols from the symbol file sym_bfd. It either
1102 returns or calls error(). The result is an initialized struct sym_fns
1103 in the objfile structure, that contains cached information about the
1107 find_sym_fns (struct objfile
*objfile
)
1110 enum bfd_flavour our_flavour
= bfd_get_flavour (objfile
->obfd
);
1111 char *our_target
= bfd_get_target (objfile
->obfd
);
1113 /* Special kludge for apollo. See dstread.c. */
1114 if (STREQN (our_target
, "apollo", 6))
1115 our_flavour
= (enum bfd_flavour
) -2;
1117 for (sf
= symtab_fns
; sf
!= NULL
; sf
= sf
->next
)
1119 if (our_flavour
== sf
->sym_flavour
)
1125 error ("I'm sorry, Dave, I can't do that. Symbol format `%s' unknown.",
1126 bfd_get_target (objfile
->obfd
));
1129 /* This function runs the load command of our current target. */
1132 load_command (char *arg
, int from_tty
)
1135 arg
= get_exec_file (1);
1136 target_load (arg
, from_tty
);
1139 /* This version of "load" should be usable for any target. Currently
1140 it is just used for remote targets, not inftarg.c or core files,
1141 on the theory that only in that case is it useful.
1143 Avoiding xmodem and the like seems like a win (a) because we don't have
1144 to worry about finding it, and (b) On VMS, fork() is very slow and so
1145 we don't want to run a subprocess. On the other hand, I'm not sure how
1146 performance compares. */
1148 static int download_write_size
= 512;
1149 static int validate_download
= 0;
1152 generic_load (char *args
, int from_tty
)
1156 time_t start_time
, end_time
; /* Start and end times of download */
1157 unsigned long data_count
= 0; /* Number of bytes transferred to memory */
1158 unsigned long write_count
= 0; /* Number of writes needed. */
1159 unsigned long load_offset
; /* offset to add to vma for each section */
1161 struct cleanup
*old_cleanups
;
1163 CORE_ADDR total_size
= 0;
1164 CORE_ADDR total_sent
= 0;
1166 /* Parse the input argument - the user can specify a load offset as
1167 a second argument. */
1168 filename
= xmalloc (strlen (args
) + 1);
1169 old_cleanups
= make_cleanup (free
, filename
);
1170 strcpy (filename
, args
);
1171 offptr
= strchr (filename
, ' ');
1175 load_offset
= strtoul (offptr
, &endptr
, 0);
1176 if (offptr
== endptr
)
1177 error ("Invalid download offset:%s\n", offptr
);
1183 /* Open the file for loading. */
1184 loadfile_bfd
= bfd_openr (filename
, gnutarget
);
1185 if (loadfile_bfd
== NULL
)
1187 perror_with_name (filename
);
1191 /* FIXME: should be checking for errors from bfd_close (for one thing,
1192 on error it does not free all the storage associated with the
1194 make_cleanup_bfd_close (loadfile_bfd
);
1196 if (!bfd_check_format (loadfile_bfd
, bfd_object
))
1198 error ("\"%s\" is not an object file: %s", filename
,
1199 bfd_errmsg (bfd_get_error ()));
1202 for (s
= loadfile_bfd
->sections
; s
; s
= s
->next
)
1203 if (s
->flags
& SEC_LOAD
)
1204 total_size
+= bfd_get_section_size_before_reloc (s
);
1206 start_time
= time (NULL
);
1208 for (s
= loadfile_bfd
->sections
; s
; s
= s
->next
)
1210 if (s
->flags
& SEC_LOAD
)
1212 CORE_ADDR size
= bfd_get_section_size_before_reloc (s
);
1216 struct cleanup
*old_chain
;
1217 CORE_ADDR lma
= s
->lma
+ load_offset
;
1218 CORE_ADDR block_size
;
1220 const char *sect_name
= bfd_get_section_name (loadfile_bfd
, s
);
1223 if (download_write_size
> 0 && size
> download_write_size
)
1224 block_size
= download_write_size
;
1228 buffer
= xmalloc (size
);
1229 old_chain
= make_cleanup (free
, buffer
);
1231 /* Is this really necessary? I guess it gives the user something
1232 to look at during a long download. */
1234 ui_out_message (uiout
, 0, "Loading section %s, size 0x%s lma 0x%s\n",
1235 sect_name
, paddr_nz (size
), paddr_nz (lma
));
1237 fprintf_unfiltered (gdb_stdout
,
1238 "Loading section %s, size 0x%s lma 0x%s\n",
1239 sect_name
, paddr_nz (size
), paddr_nz (lma
));
1242 bfd_get_section_contents (loadfile_bfd
, s
, buffer
, 0, size
);
1248 CORE_ADDR this_transfer
= size
- sent
;
1249 if (this_transfer
>= block_size
)
1250 this_transfer
= block_size
;
1251 len
= target_write_memory_partial (lma
, buffer
,
1252 this_transfer
, &err
);
1255 if (validate_download
)
1257 /* Broken memories and broken monitors manifest
1258 themselves here when bring new computers to
1259 life. This doubles already slow downloads. */
1260 /* NOTE: cagney/1999-10-18: A more efficient
1261 implementation might add a verify_memory()
1262 method to the target vector and then use
1263 that. remote.c could implement that method
1264 using the ``qCRC'' packet. */
1265 char *check
= xmalloc (len
);
1266 struct cleanup
*verify_cleanups
= make_cleanup (free
, check
);
1267 if (target_read_memory (lma
, check
, len
) != 0)
1268 error ("Download verify read failed at 0x%s",
1270 if (memcmp (buffer
, check
, len
) != 0)
1271 error ("Download verify compare failed at 0x%s",
1273 do_cleanups (verify_cleanups
);
1282 || (ui_load_progress_hook
!= NULL
1283 && ui_load_progress_hook (sect_name
, sent
)))
1284 error ("Canceled the download");
1286 if (show_load_progress
!= NULL
)
1287 show_load_progress (sect_name
, sent
, size
, total_sent
, total_size
);
1289 while (sent
< size
);
1292 error ("Memory access error while loading section %s.", sect_name
);
1294 do_cleanups (old_chain
);
1299 end_time
= time (NULL
);
1302 entry
= bfd_get_start_address (loadfile_bfd
);
1304 ui_out_text (uiout
, "Start address ");
1305 ui_out_field_fmt (uiout
, "address", "0x%s" , paddr_nz (entry
));
1306 ui_out_text (uiout
, ", load size ");
1307 ui_out_field_fmt (uiout
, "load-size", "%ld" , data_count
);
1308 ui_out_text (uiout
, "\n");
1311 fprintf_unfiltered (gdb_stdout
,
1312 "Start address 0x%s , load size %ld\n",
1313 paddr_nz (entry
), data_count
);
1315 /* We were doing this in remote-mips.c, I suspect it is right
1316 for other targets too. */
1320 /* FIXME: are we supposed to call symbol_file_add or not? According to
1321 a comment from remote-mips.c (where a call to symbol_file_add was
1322 commented out), making the call confuses GDB if more than one file is
1323 loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c
1326 print_transfer_performance (gdb_stdout
, data_count
, write_count
,
1327 end_time
- start_time
);
1329 do_cleanups (old_cleanups
);
1332 /* Report how fast the transfer went. */
1334 /* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being
1335 replaced by print_transfer_performance (with a very different
1336 function signature). */
1339 report_transfer_performance (unsigned long data_count
, time_t start_time
,
1342 print_transfer_performance (gdb_stdout
, data_count
, end_time
- start_time
, 0);
1346 print_transfer_performance (struct ui_file
*stream
,
1347 unsigned long data_count
,
1348 unsigned long write_count
,
1349 unsigned long time_count
)
1352 ui_out_text (uiout
, "Transfer rate: ");
1355 ui_out_field_fmt (uiout
, "transfer-rate", "%ld",
1356 (data_count
* 8) / time_count
);
1357 ui_out_text (uiout
, " bits/sec");
1361 ui_out_field_fmt (uiout
, "transferred-bits", "%ld", (data_count
* 8));
1362 ui_out_text (uiout
, " bits in <1 sec");
1364 if (write_count
> 0)
1366 ui_out_text (uiout
, ", ");
1367 ui_out_field_fmt (uiout
, "write-rate", "%ld", data_count
/ write_count
);
1368 ui_out_text (uiout
, " bytes/write");
1370 ui_out_text (uiout
, ".\n");
1372 fprintf_unfiltered (stream
, "Transfer rate: ");
1374 fprintf_unfiltered (stream
, "%ld bits/sec", (data_count
* 8) / time_count
);
1376 fprintf_unfiltered (stream
, "%ld bits in <1 sec", (data_count
* 8));
1377 if (write_count
> 0)
1378 fprintf_unfiltered (stream
, ", %ld bytes/write", data_count
/ write_count
);
1379 fprintf_unfiltered (stream
, ".\n");
1383 /* This function allows the addition of incrementally linked object files.
1384 It does not modify any state in the target, only in the debugger. */
1385 /* Note: ezannoni 2000-04-13 This function/command used to have a
1386 special case syntax for the rombug target (Rombug is the boot
1387 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
1388 rombug case, the user doesn't need to supply a text address,
1389 instead a call to target_link() (in target.c) would supply the
1390 value to use. We are now discontinuing this type of ad hoc syntax. */
1394 add_symbol_file_command (char *args
, int from_tty
)
1396 char *filename
= NULL
;
1397 int flags
= OBJF_USERLOADED
;
1399 int expecting_option
= 0;
1400 int section_index
= 0;
1404 int expecting_sec_name
= 0;
1405 int expecting_sec_addr
= 0;
1411 } sect_opts
[SECT_OFF_MAX
];
1413 struct section_addr_info section_addrs
;
1414 struct cleanup
*my_cleanups
;
1419 error ("add-symbol-file takes a file name and an address");
1421 /* Make a copy of the string that we can safely write into. */
1422 args
= xstrdup (args
);
1424 /* Ensure section_addrs is initialized */
1425 memset (§ion_addrs
, 0, sizeof (section_addrs
));
1427 while (*args
!= '\000')
1429 /* Any leading spaces? */
1430 while (isspace (*args
))
1433 /* Point arg to the beginning of the argument. */
1436 /* Move args pointer over the argument. */
1437 while ((*args
!= '\000') && !isspace (*args
))
1440 /* If there are more arguments, terminate arg and
1442 if (*args
!= '\000')
1445 /* Now process the argument. */
1448 /* The first argument is the file name. */
1449 filename
= tilde_expand (arg
);
1450 my_cleanups
= make_cleanup (free
, filename
);
1455 /* The second argument is always the text address at which
1456 to load the program. */
1457 sect_opts
[section_index
].name
= ".text";
1458 sect_opts
[section_index
].value
= arg
;
1463 /* It's an option (starting with '-') or it's an argument
1468 if (strcmp (arg
, "-mapped") == 0)
1469 flags
|= OBJF_MAPPED
;
1471 if (strcmp (arg
, "-readnow") == 0)
1472 flags
|= OBJF_READNOW
;
1474 if (strcmp (arg
, "-s") == 0)
1476 if (section_index
>= SECT_OFF_MAX
)
1477 error ("Too many sections specified.");
1478 expecting_sec_name
= 1;
1479 expecting_sec_addr
= 1;
1484 if (expecting_sec_name
)
1486 sect_opts
[section_index
].name
= arg
;
1487 expecting_sec_name
= 0;
1490 if (expecting_sec_addr
)
1492 sect_opts
[section_index
].value
= arg
;
1493 expecting_sec_addr
= 0;
1497 error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*");
1503 /* Print the prompt for the query below. And save the arguments into
1504 a sect_addr_info structure to be passed around to other
1505 functions. We have to split this up into separate print
1506 statements because local_hex_string returns a local static
1509 printf_filtered ("add symbol table from file \"%s\" at\n", filename
);
1510 for (i
= 0; i
< section_index
; i
++)
1513 char *val
= sect_opts
[i
].value
;
1514 char *sec
= sect_opts
[i
].name
;
1516 val
= sect_opts
[i
].value
;
1517 if (val
[0] == '0' && val
[1] == 'x')
1518 addr
= strtoul (val
+2, NULL
, 16);
1520 addr
= strtoul (val
, NULL
, 10);
1522 /* Here we store the section offsets in the order they were
1523 entered on the command line. */
1524 section_addrs
.other
[sec_num
].name
= sec
;
1525 section_addrs
.other
[sec_num
].addr
= addr
;
1526 printf_filtered ("\t%s_addr = %s\n",
1528 local_hex_string ((unsigned long)addr
));
1531 /* The object's sections are initialized when a
1532 call is made to build_objfile_section_table (objfile).
1533 This happens in reread_symbols.
1534 At this point, we don't know what file type this is,
1535 so we can't determine what section names are valid. */
1538 if (from_tty
&& (!query ("%s", "")))
1539 error ("Not confirmed.");
1541 symbol_file_add (filename
, from_tty
, §ion_addrs
, 0, flags
);
1543 /* Getting new symbols may change our opinion about what is
1545 reinit_frame_cache ();
1546 do_cleanups (my_cleanups
);
1550 add_shared_symbol_files_command (char *args
, int from_tty
)
1552 #ifdef ADD_SHARED_SYMBOL_FILES
1553 ADD_SHARED_SYMBOL_FILES (args
, from_tty
);
1555 error ("This command is not available in this configuration of GDB.");
1559 /* Re-read symbols if a symbol-file has changed. */
1561 reread_symbols (void)
1563 struct objfile
*objfile
;
1566 struct stat new_statbuf
;
1569 /* With the addition of shared libraries, this should be modified,
1570 the load time should be saved in the partial symbol tables, since
1571 different tables may come from different source files. FIXME.
1572 This routine should then walk down each partial symbol table
1573 and see if the symbol table that it originates from has been changed */
1575 for (objfile
= object_files
; objfile
; objfile
= objfile
->next
)
1579 #ifdef IBM6000_TARGET
1580 /* If this object is from a shared library, then you should
1581 stat on the library name, not member name. */
1583 if (objfile
->obfd
->my_archive
)
1584 res
= stat (objfile
->obfd
->my_archive
->filename
, &new_statbuf
);
1587 res
= stat (objfile
->name
, &new_statbuf
);
1590 /* FIXME, should use print_sys_errmsg but it's not filtered. */
1591 printf_filtered ("`%s' has disappeared; keeping its symbols.\n",
1595 new_modtime
= new_statbuf
.st_mtime
;
1596 if (new_modtime
!= objfile
->mtime
)
1598 struct cleanup
*old_cleanups
;
1599 struct section_offsets
*offsets
;
1601 char *obfd_filename
;
1603 printf_filtered ("`%s' has changed; re-reading symbols.\n",
1606 /* There are various functions like symbol_file_add,
1607 symfile_bfd_open, syms_from_objfile, etc., which might
1608 appear to do what we want. But they have various other
1609 effects which we *don't* want. So we just do stuff
1610 ourselves. We don't worry about mapped files (for one thing,
1611 any mapped file will be out of date). */
1613 /* If we get an error, blow away this objfile (not sure if
1614 that is the correct response for things like shared
1616 old_cleanups
= make_cleanup_free_objfile (objfile
);
1617 /* We need to do this whenever any symbols go away. */
1618 make_cleanup (clear_symtab_users_cleanup
, 0 /*ignore*/);
1620 /* Clean up any state BFD has sitting around. We don't need
1621 to close the descriptor but BFD lacks a way of closing the
1622 BFD without closing the descriptor. */
1623 obfd_filename
= bfd_get_filename (objfile
->obfd
);
1624 if (!bfd_close (objfile
->obfd
))
1625 error ("Can't close BFD for %s: %s", objfile
->name
,
1626 bfd_errmsg (bfd_get_error ()));
1627 objfile
->obfd
= bfd_openr (obfd_filename
, gnutarget
);
1628 if (objfile
->obfd
== NULL
)
1629 error ("Can't open %s to read symbols.", objfile
->name
);
1630 /* bfd_openr sets cacheable to true, which is what we want. */
1631 if (!bfd_check_format (objfile
->obfd
, bfd_object
))
1632 error ("Can't read symbols from %s: %s.", objfile
->name
,
1633 bfd_errmsg (bfd_get_error ()));
1635 /* Save the offsets, we will nuke them with the rest of the
1637 num_offsets
= objfile
->num_sections
;
1638 offsets
= (struct section_offsets
*) alloca (SIZEOF_SECTION_OFFSETS
);
1639 memcpy (offsets
, objfile
->section_offsets
, SIZEOF_SECTION_OFFSETS
);
1641 /* Nuke all the state that we will re-read. Much of the following
1642 code which sets things to NULL really is necessary to tell
1643 other parts of GDB that there is nothing currently there. */
1645 /* FIXME: Do we have to free a whole linked list, or is this
1647 if (objfile
->global_psymbols
.list
)
1648 mfree (objfile
->md
, objfile
->global_psymbols
.list
);
1649 memset (&objfile
->global_psymbols
, 0,
1650 sizeof (objfile
->global_psymbols
));
1651 if (objfile
->static_psymbols
.list
)
1652 mfree (objfile
->md
, objfile
->static_psymbols
.list
);
1653 memset (&objfile
->static_psymbols
, 0,
1654 sizeof (objfile
->static_psymbols
));
1656 /* Free the obstacks for non-reusable objfiles */
1657 free_bcache (&objfile
->psymbol_cache
);
1658 obstack_free (&objfile
->psymbol_obstack
, 0);
1659 obstack_free (&objfile
->symbol_obstack
, 0);
1660 obstack_free (&objfile
->type_obstack
, 0);
1661 objfile
->sections
= NULL
;
1662 objfile
->symtabs
= NULL
;
1663 objfile
->psymtabs
= NULL
;
1664 objfile
->free_psymtabs
= NULL
;
1665 objfile
->msymbols
= NULL
;
1666 objfile
->minimal_symbol_count
= 0;
1667 memset (&objfile
->msymbol_hash
, 0,
1668 sizeof (objfile
->msymbol_hash
));
1669 memset (&objfile
->msymbol_demangled_hash
, 0,
1670 sizeof (objfile
->msymbol_demangled_hash
));
1671 objfile
->fundamental_types
= NULL
;
1672 if (objfile
->sf
!= NULL
)
1674 (*objfile
->sf
->sym_finish
) (objfile
);
1677 /* We never make this a mapped file. */
1679 /* obstack_specify_allocation also initializes the obstack so
1681 obstack_specify_allocation (&objfile
->psymbol_cache
.cache
, 0, 0,
1683 obstack_specify_allocation (&objfile
->psymbol_obstack
, 0, 0,
1685 obstack_specify_allocation (&objfile
->symbol_obstack
, 0, 0,
1687 obstack_specify_allocation (&objfile
->type_obstack
, 0, 0,
1689 if (build_objfile_section_table (objfile
))
1691 error ("Can't find the file sections in `%s': %s",
1692 objfile
->name
, bfd_errmsg (bfd_get_error ()));
1695 /* We use the same section offsets as from last time. I'm not
1696 sure whether that is always correct for shared libraries. */
1697 objfile
->section_offsets
= (struct section_offsets
*)
1698 obstack_alloc (&objfile
->psymbol_obstack
, SIZEOF_SECTION_OFFSETS
);
1699 memcpy (objfile
->section_offsets
, offsets
, SIZEOF_SECTION_OFFSETS
);
1700 objfile
->num_sections
= num_offsets
;
1702 /* What the hell is sym_new_init for, anyway? The concept of
1703 distinguishing between the main file and additional files
1704 in this way seems rather dubious. */
1705 if (objfile
== symfile_objfile
)
1707 (*objfile
->sf
->sym_new_init
) (objfile
);
1709 RESET_HP_UX_GLOBALS ();
1713 (*objfile
->sf
->sym_init
) (objfile
);
1714 clear_complaints (1, 1);
1715 /* The "mainline" parameter is a hideous hack; I think leaving it
1716 zero is OK since dbxread.c also does what it needs to do if
1717 objfile->global_psymbols.size is 0. */
1718 (*objfile
->sf
->sym_read
) (objfile
, 0);
1719 if (!have_partial_symbols () && !have_full_symbols ())
1722 printf_filtered ("(no debugging symbols found)\n");
1725 objfile
->flags
|= OBJF_SYMS
;
1727 /* We're done reading the symbol file; finish off complaints. */
1728 clear_complaints (0, 1);
1730 /* Getting new symbols may change our opinion about what is
1733 reinit_frame_cache ();
1735 /* Discard cleanups as symbol reading was successful. */
1736 discard_cleanups (old_cleanups
);
1738 /* If the mtime has changed between the time we set new_modtime
1739 and now, we *want* this to be out of date, so don't call stat
1741 objfile
->mtime
= new_modtime
;
1744 /* Call this after reading in a new symbol table to give target
1745 dependant code a crack at the new symbols. For instance, this
1746 could be used to update the values of target-specific symbols GDB
1747 needs to keep track of (such as _sigtramp, or whatever). */
1749 TARGET_SYMFILE_POSTREAD (objfile
);
1755 clear_symtab_users ();
1767 static filename_language
*filename_language_table
;
1768 static int fl_table_size
, fl_table_next
;
1771 add_filename_language (char *ext
, enum language lang
)
1773 if (fl_table_next
>= fl_table_size
)
1775 fl_table_size
+= 10;
1776 filename_language_table
= realloc (filename_language_table
,
1780 filename_language_table
[fl_table_next
].ext
= strsave (ext
);
1781 filename_language_table
[fl_table_next
].lang
= lang
;
1785 static char *ext_args
;
1788 set_ext_lang_command (char *args
, int from_tty
)
1791 char *cp
= ext_args
;
1794 /* First arg is filename extension, starting with '.' */
1796 error ("'%s': Filename extension must begin with '.'", ext_args
);
1798 /* Find end of first arg. */
1799 while (*cp
&& !isspace (*cp
))
1803 error ("'%s': two arguments required -- filename extension and language",
1806 /* Null-terminate first arg */
1809 /* Find beginning of second arg, which should be a source language. */
1810 while (*cp
&& isspace (*cp
))
1814 error ("'%s': two arguments required -- filename extension and language",
1817 /* Lookup the language from among those we know. */
1818 lang
= language_enum (cp
);
1820 /* Now lookup the filename extension: do we already know it? */
1821 for (i
= 0; i
< fl_table_next
; i
++)
1822 if (0 == strcmp (ext_args
, filename_language_table
[i
].ext
))
1825 if (i
>= fl_table_next
)
1827 /* new file extension */
1828 add_filename_language (ext_args
, lang
);
1832 /* redefining a previously known filename extension */
1835 /* query ("Really make files of type %s '%s'?", */
1836 /* ext_args, language_str (lang)); */
1838 free (filename_language_table
[i
].ext
);
1839 filename_language_table
[i
].ext
= strsave (ext_args
);
1840 filename_language_table
[i
].lang
= lang
;
1845 info_ext_lang_command (char *args
, int from_tty
)
1849 printf_filtered ("Filename extensions and the languages they represent:");
1850 printf_filtered ("\n\n");
1851 for (i
= 0; i
< fl_table_next
; i
++)
1852 printf_filtered ("\t%s\t- %s\n",
1853 filename_language_table
[i
].ext
,
1854 language_str (filename_language_table
[i
].lang
));
1858 init_filename_language_table (void)
1860 if (fl_table_size
== 0) /* protect against repetition */
1864 filename_language_table
=
1865 xmalloc (fl_table_size
* sizeof (*filename_language_table
));
1866 add_filename_language (".c", language_c
);
1867 add_filename_language (".C", language_cplus
);
1868 add_filename_language (".cc", language_cplus
);
1869 add_filename_language (".cp", language_cplus
);
1870 add_filename_language (".cpp", language_cplus
);
1871 add_filename_language (".cxx", language_cplus
);
1872 add_filename_language (".c++", language_cplus
);
1873 add_filename_language (".java", language_java
);
1874 add_filename_language (".class", language_java
);
1875 add_filename_language (".ch", language_chill
);
1876 add_filename_language (".c186", language_chill
);
1877 add_filename_language (".c286", language_chill
);
1878 add_filename_language (".f", language_fortran
);
1879 add_filename_language (".F", language_fortran
);
1880 add_filename_language (".s", language_asm
);
1881 add_filename_language (".S", language_asm
);
1882 add_filename_language (".pas", language_pascal
);
1883 add_filename_language (".p", language_pascal
);
1884 add_filename_language (".pp", language_pascal
);
1889 deduce_language_from_filename (char *filename
)
1894 if (filename
!= NULL
)
1895 if ((cp
= strrchr (filename
, '.')) != NULL
)
1896 for (i
= 0; i
< fl_table_next
; i
++)
1897 if (strcmp (cp
, filename_language_table
[i
].ext
) == 0)
1898 return filename_language_table
[i
].lang
;
1900 return language_unknown
;
1905 Allocate and partly initialize a new symbol table. Return a pointer
1906 to it. error() if no space.
1908 Caller must set these fields:
1914 possibly free_named_symtabs (symtab->filename);
1918 allocate_symtab (char *filename
, struct objfile
*objfile
)
1920 register struct symtab
*symtab
;
1922 symtab
= (struct symtab
*)
1923 obstack_alloc (&objfile
->symbol_obstack
, sizeof (struct symtab
));
1924 memset (symtab
, 0, sizeof (*symtab
));
1925 symtab
->filename
= obsavestring (filename
, strlen (filename
),
1926 &objfile
->symbol_obstack
);
1927 symtab
->fullname
= NULL
;
1928 symtab
->language
= deduce_language_from_filename (filename
);
1929 symtab
->debugformat
= obsavestring ("unknown", 7,
1930 &objfile
->symbol_obstack
);
1932 /* Hook it to the objfile it comes from */
1934 symtab
->objfile
= objfile
;
1935 symtab
->next
= objfile
->symtabs
;
1936 objfile
->symtabs
= symtab
;
1938 /* FIXME: This should go away. It is only defined for the Z8000,
1939 and the Z8000 definition of this macro doesn't have anything to
1940 do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just
1941 here for convenience. */
1942 #ifdef INIT_EXTRA_SYMTAB_INFO
1943 INIT_EXTRA_SYMTAB_INFO (symtab
);
1949 struct partial_symtab
*
1950 allocate_psymtab (char *filename
, struct objfile
*objfile
)
1952 struct partial_symtab
*psymtab
;
1954 if (objfile
->free_psymtabs
)
1956 psymtab
= objfile
->free_psymtabs
;
1957 objfile
->free_psymtabs
= psymtab
->next
;
1960 psymtab
= (struct partial_symtab
*)
1961 obstack_alloc (&objfile
->psymbol_obstack
,
1962 sizeof (struct partial_symtab
));
1964 memset (psymtab
, 0, sizeof (struct partial_symtab
));
1965 psymtab
->filename
= obsavestring (filename
, strlen (filename
),
1966 &objfile
->psymbol_obstack
);
1967 psymtab
->symtab
= NULL
;
1969 /* Prepend it to the psymtab list for the objfile it belongs to.
1970 Psymtabs are searched in most recent inserted -> least recent
1973 psymtab
->objfile
= objfile
;
1974 psymtab
->next
= objfile
->psymtabs
;
1975 objfile
->psymtabs
= psymtab
;
1978 struct partial_symtab
**prev_pst
;
1979 psymtab
->objfile
= objfile
;
1980 psymtab
->next
= NULL
;
1981 prev_pst
= &(objfile
->psymtabs
);
1982 while ((*prev_pst
) != NULL
)
1983 prev_pst
= &((*prev_pst
)->next
);
1984 (*prev_pst
) = psymtab
;
1992 discard_psymtab (struct partial_symtab
*pst
)
1994 struct partial_symtab
**prev_pst
;
1997 Empty psymtabs happen as a result of header files which don't
1998 have any symbols in them. There can be a lot of them. But this
1999 check is wrong, in that a psymtab with N_SLINE entries but
2000 nothing else is not empty, but we don't realize that. Fixing
2001 that without slowing things down might be tricky. */
2003 /* First, snip it out of the psymtab chain */
2005 prev_pst
= &(pst
->objfile
->psymtabs
);
2006 while ((*prev_pst
) != pst
)
2007 prev_pst
= &((*prev_pst
)->next
);
2008 (*prev_pst
) = pst
->next
;
2010 /* Next, put it on a free list for recycling */
2012 pst
->next
= pst
->objfile
->free_psymtabs
;
2013 pst
->objfile
->free_psymtabs
= pst
;
2017 /* Reset all data structures in gdb which may contain references to symbol
2021 clear_symtab_users (void)
2023 /* Someday, we should do better than this, by only blowing away
2024 the things that really need to be blown. */
2025 clear_value_history ();
2027 clear_internalvars ();
2028 breakpoint_re_set ();
2029 set_default_breakpoint (0, 0, 0, 0);
2030 current_source_symtab
= 0;
2031 current_source_line
= 0;
2032 clear_pc_function_cache ();
2033 if (target_new_objfile_hook
)
2034 target_new_objfile_hook (NULL
);
2038 clear_symtab_users_cleanup (void *ignore
)
2040 clear_symtab_users ();
2043 /* clear_symtab_users_once:
2045 This function is run after symbol reading, or from a cleanup.
2046 If an old symbol table was obsoleted, the old symbol table
2047 has been blown away, but the other GDB data structures that may
2048 reference it have not yet been cleared or re-directed. (The old
2049 symtab was zapped, and the cleanup queued, in free_named_symtab()
2052 This function can be queued N times as a cleanup, or called
2053 directly; it will do all the work the first time, and then will be a
2054 no-op until the next time it is queued. This works by bumping a
2055 counter at queueing time. Much later when the cleanup is run, or at
2056 the end of symbol processing (in case the cleanup is discarded), if
2057 the queued count is greater than the "done-count", we do the work
2058 and set the done-count to the queued count. If the queued count is
2059 less than or equal to the done-count, we just ignore the call. This
2060 is needed because reading a single .o file will often replace many
2061 symtabs (one per .h file, for example), and we don't want to reset
2062 the breakpoints N times in the user's face.
2064 The reason we both queue a cleanup, and call it directly after symbol
2065 reading, is because the cleanup protects us in case of errors, but is
2066 discarded if symbol reading is successful. */
2069 /* FIXME: As free_named_symtabs is currently a big noop this function
2070 is no longer needed. */
2071 static void clear_symtab_users_once (void);
2073 static int clear_symtab_users_queued
;
2074 static int clear_symtab_users_done
;
2077 clear_symtab_users_once (void)
2079 /* Enforce once-per-`do_cleanups'-semantics */
2080 if (clear_symtab_users_queued
<= clear_symtab_users_done
)
2082 clear_symtab_users_done
= clear_symtab_users_queued
;
2084 clear_symtab_users ();
2088 /* Delete the specified psymtab, and any others that reference it. */
2091 cashier_psymtab (struct partial_symtab
*pst
)
2093 struct partial_symtab
*ps
, *pprev
= NULL
;
2096 /* Find its previous psymtab in the chain */
2097 for (ps
= pst
->objfile
->psymtabs
; ps
; ps
= ps
->next
)
2106 /* Unhook it from the chain. */
2107 if (ps
== pst
->objfile
->psymtabs
)
2108 pst
->objfile
->psymtabs
= ps
->next
;
2110 pprev
->next
= ps
->next
;
2112 /* FIXME, we can't conveniently deallocate the entries in the
2113 partial_symbol lists (global_psymbols/static_psymbols) that
2114 this psymtab points to. These just take up space until all
2115 the psymtabs are reclaimed. Ditto the dependencies list and
2116 filename, which are all in the psymbol_obstack. */
2118 /* We need to cashier any psymtab that has this one as a dependency... */
2120 for (ps
= pst
->objfile
->psymtabs
; ps
; ps
= ps
->next
)
2122 for (i
= 0; i
< ps
->number_of_dependencies
; i
++)
2124 if (ps
->dependencies
[i
] == pst
)
2126 cashier_psymtab (ps
);
2127 goto again
; /* Must restart, chain has been munged. */
2134 /* If a symtab or psymtab for filename NAME is found, free it along
2135 with any dependent breakpoints, displays, etc.
2136 Used when loading new versions of object modules with the "add-file"
2137 command. This is only called on the top-level symtab or psymtab's name;
2138 it is not called for subsidiary files such as .h files.
2140 Return value is 1 if we blew away the environment, 0 if not.
2141 FIXME. The return valu appears to never be used.
2143 FIXME. I think this is not the best way to do this. We should
2144 work on being gentler to the environment while still cleaning up
2145 all stray pointers into the freed symtab. */
2148 free_named_symtabs (char *name
)
2151 /* FIXME: With the new method of each objfile having it's own
2152 psymtab list, this function needs serious rethinking. In particular,
2153 why was it ever necessary to toss psymtabs with specific compilation
2154 unit filenames, as opposed to all psymtabs from a particular symbol
2156 Well, the answer is that some systems permit reloading of particular
2157 compilation units. We want to blow away any old info about these
2158 compilation units, regardless of which objfiles they arrived in. --gnu. */
2160 register struct symtab
*s
;
2161 register struct symtab
*prev
;
2162 register struct partial_symtab
*ps
;
2163 struct blockvector
*bv
;
2166 /* We only wack things if the symbol-reload switch is set. */
2167 if (!symbol_reloading
)
2170 /* Some symbol formats have trouble providing file names... */
2171 if (name
== 0 || *name
== '\0')
2174 /* Look for a psymtab with the specified name. */
2177 for (ps
= partial_symtab_list
; ps
; ps
= ps
->next
)
2179 if (STREQ (name
, ps
->filename
))
2181 cashier_psymtab (ps
); /* Blow it away...and its little dog, too. */
2182 goto again2
; /* Must restart, chain has been munged */
2186 /* Look for a symtab with the specified name. */
2188 for (s
= symtab_list
; s
; s
= s
->next
)
2190 if (STREQ (name
, s
->filename
))
2197 if (s
== symtab_list
)
2198 symtab_list
= s
->next
;
2200 prev
->next
= s
->next
;
2202 /* For now, queue a delete for all breakpoints, displays, etc., whether
2203 or not they depend on the symtab being freed. This should be
2204 changed so that only those data structures affected are deleted. */
2206 /* But don't delete anything if the symtab is empty.
2207 This test is necessary due to a bug in "dbxread.c" that
2208 causes empty symtabs to be created for N_SO symbols that
2209 contain the pathname of the object file. (This problem
2210 has been fixed in GDB 3.9x). */
2212 bv
= BLOCKVECTOR (s
);
2213 if (BLOCKVECTOR_NBLOCKS (bv
) > 2
2214 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv
, GLOBAL_BLOCK
))
2215 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv
, STATIC_BLOCK
)))
2217 complain (&oldsyms_complaint
, name
);
2219 clear_symtab_users_queued
++;
2220 make_cleanup (clear_symtab_users_once
, 0);
2225 complain (&empty_symtab_complaint
, name
);
2232 /* It is still possible that some breakpoints will be affected
2233 even though no symtab was found, since the file might have
2234 been compiled without debugging, and hence not be associated
2235 with a symtab. In order to handle this correctly, we would need
2236 to keep a list of text address ranges for undebuggable files.
2237 For now, we do nothing, since this is a fairly obscure case. */
2241 /* FIXME, what about the minimal symbol table? */
2248 /* Allocate and partially fill a partial symtab. It will be
2249 completely filled at the end of the symbol list.
2251 FILENAME is the name of the symbol-file we are reading from. */
2253 struct partial_symtab
*
2254 start_psymtab_common (struct objfile
*objfile
,
2255 struct section_offsets
*section_offsets
, char *filename
,
2256 CORE_ADDR textlow
, struct partial_symbol
**global_syms
,
2257 struct partial_symbol
**static_syms
)
2259 struct partial_symtab
*psymtab
;
2261 psymtab
= allocate_psymtab (filename
, objfile
);
2262 psymtab
->section_offsets
= section_offsets
;
2263 psymtab
->textlow
= textlow
;
2264 psymtab
->texthigh
= psymtab
->textlow
; /* default */
2265 psymtab
->globals_offset
= global_syms
- objfile
->global_psymbols
.list
;
2266 psymtab
->statics_offset
= static_syms
- objfile
->static_psymbols
.list
;
2270 /* Add a symbol with a long value to a psymtab.
2271 Since one arg is a struct, we pass in a ptr and deref it (sigh). */
2274 add_psymbol_to_list (char *name
, int namelength
, namespace_enum
namespace,
2275 enum address_class
class,
2276 struct psymbol_allocation_list
*list
, long val
, /* Value as a long */
2277 CORE_ADDR coreaddr
, /* Value as a CORE_ADDR */
2278 enum language language
, struct objfile
*objfile
)
2280 register struct partial_symbol
*psym
;
2281 char *buf
= alloca (namelength
+ 1);
2282 /* psymbol is static so that there will be no uninitialized gaps in the
2283 structure which might contain random data, causing cache misses in
2285 static struct partial_symbol psymbol
;
2287 /* Create local copy of the partial symbol */
2288 memcpy (buf
, name
, namelength
);
2289 buf
[namelength
] = '\0';
2290 SYMBOL_NAME (&psymbol
) = bcache (buf
, namelength
+ 1, &objfile
->psymbol_cache
);
2291 /* val and coreaddr are mutually exclusive, one of them *will* be zero */
2294 SYMBOL_VALUE (&psymbol
) = val
;
2298 SYMBOL_VALUE_ADDRESS (&psymbol
) = coreaddr
;
2300 SYMBOL_SECTION (&psymbol
) = 0;
2301 SYMBOL_LANGUAGE (&psymbol
) = language
;
2302 PSYMBOL_NAMESPACE (&psymbol
) = namespace;
2303 PSYMBOL_CLASS (&psymbol
) = class;
2304 SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol
, language
);
2306 /* Stash the partial symbol away in the cache */
2307 psym
= bcache (&psymbol
, sizeof (struct partial_symbol
), &objfile
->psymbol_cache
);
2309 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
2310 if (list
->next
>= list
->list
+ list
->size
)
2312 extend_psymbol_list (list
, objfile
);
2314 *list
->next
++ = psym
;
2315 OBJSTAT (objfile
, n_psyms
++);
2318 /* Add a symbol with a long value to a psymtab. This differs from
2319 * add_psymbol_to_list above in taking both a mangled and a demangled
2323 add_psymbol_with_dem_name_to_list (char *name
, int namelength
, char *dem_name
,
2324 int dem_namelength
, namespace_enum
namespace,
2325 enum address_class
class,
2326 struct psymbol_allocation_list
*list
, long val
, /* Value as a long */
2327 CORE_ADDR coreaddr
, /* Value as a CORE_ADDR */
2328 enum language language
,
2329 struct objfile
*objfile
)
2331 register struct partial_symbol
*psym
;
2332 char *buf
= alloca (namelength
+ 1);
2333 /* psymbol is static so that there will be no uninitialized gaps in the
2334 structure which might contain random data, causing cache misses in
2336 static struct partial_symbol psymbol
;
2338 /* Create local copy of the partial symbol */
2340 memcpy (buf
, name
, namelength
);
2341 buf
[namelength
] = '\0';
2342 SYMBOL_NAME (&psymbol
) = bcache (buf
, namelength
+ 1, &objfile
->psymbol_cache
);
2344 buf
= alloca (dem_namelength
+ 1);
2345 memcpy (buf
, dem_name
, dem_namelength
);
2346 buf
[dem_namelength
] = '\0';
2351 case language_cplus
:
2352 SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol
) =
2353 bcache (buf
, dem_namelength
+ 1, &objfile
->psymbol_cache
);
2355 case language_chill
:
2356 SYMBOL_CHILL_DEMANGLED_NAME (&psymbol
) =
2357 bcache (buf
, dem_namelength
+ 1, &objfile
->psymbol_cache
);
2359 /* FIXME What should be done for the default case? Ignoring for now. */
2362 /* val and coreaddr are mutually exclusive, one of them *will* be zero */
2365 SYMBOL_VALUE (&psymbol
) = val
;
2369 SYMBOL_VALUE_ADDRESS (&psymbol
) = coreaddr
;
2371 SYMBOL_SECTION (&psymbol
) = 0;
2372 SYMBOL_LANGUAGE (&psymbol
) = language
;
2373 PSYMBOL_NAMESPACE (&psymbol
) = namespace;
2374 PSYMBOL_CLASS (&psymbol
) = class;
2375 SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol
, language
);
2377 /* Stash the partial symbol away in the cache */
2378 psym
= bcache (&psymbol
, sizeof (struct partial_symbol
), &objfile
->psymbol_cache
);
2380 /* Save pointer to partial symbol in psymtab, growing symtab if needed. */
2381 if (list
->next
>= list
->list
+ list
->size
)
2383 extend_psymbol_list (list
, objfile
);
2385 *list
->next
++ = psym
;
2386 OBJSTAT (objfile
, n_psyms
++);
2389 /* Initialize storage for partial symbols. */
2392 init_psymbol_list (struct objfile
*objfile
, int total_symbols
)
2394 /* Free any previously allocated psymbol lists. */
2396 if (objfile
->global_psymbols
.list
)
2398 mfree (objfile
->md
, (PTR
) objfile
->global_psymbols
.list
);
2400 if (objfile
->static_psymbols
.list
)
2402 mfree (objfile
->md
, (PTR
) objfile
->static_psymbols
.list
);
2405 /* Current best guess is that approximately a twentieth
2406 of the total symbols (in a debugging file) are global or static
2409 objfile
->global_psymbols
.size
= total_symbols
/ 10;
2410 objfile
->static_psymbols
.size
= total_symbols
/ 10;
2412 if (objfile
->global_psymbols
.size
> 0)
2414 objfile
->global_psymbols
.next
=
2415 objfile
->global_psymbols
.list
= (struct partial_symbol
**)
2416 xmmalloc (objfile
->md
, (objfile
->global_psymbols
.size
2417 * sizeof (struct partial_symbol
*)));
2419 if (objfile
->static_psymbols
.size
> 0)
2421 objfile
->static_psymbols
.next
=
2422 objfile
->static_psymbols
.list
= (struct partial_symbol
**)
2423 xmmalloc (objfile
->md
, (objfile
->static_psymbols
.size
2424 * sizeof (struct partial_symbol
*)));
2429 The following code implements an abstraction for debugging overlay sections.
2431 The target model is as follows:
2432 1) The gnu linker will permit multiple sections to be mapped into the
2433 same VMA, each with its own unique LMA (or load address).
2434 2) It is assumed that some runtime mechanism exists for mapping the
2435 sections, one by one, from the load address into the VMA address.
2436 3) This code provides a mechanism for gdb to keep track of which
2437 sections should be considered to be mapped from the VMA to the LMA.
2438 This information is used for symbol lookup, and memory read/write.
2439 For instance, if a section has been mapped then its contents
2440 should be read from the VMA, otherwise from the LMA.
2442 Two levels of debugger support for overlays are available. One is
2443 "manual", in which the debugger relies on the user to tell it which
2444 overlays are currently mapped. This level of support is
2445 implemented entirely in the core debugger, and the information about
2446 whether a section is mapped is kept in the objfile->obj_section table.
2448 The second level of support is "automatic", and is only available if
2449 the target-specific code provides functionality to read the target's
2450 overlay mapping table, and translate its contents for the debugger
2451 (by updating the mapped state information in the obj_section tables).
2453 The interface is as follows:
2455 overlay map <name> -- tell gdb to consider this section mapped
2456 overlay unmap <name> -- tell gdb to consider this section unmapped
2457 overlay list -- list the sections that GDB thinks are mapped
2458 overlay read-target -- get the target's state of what's mapped
2459 overlay off/manual/auto -- set overlay debugging state
2460 Functional interface:
2461 find_pc_mapped_section(pc): if the pc is in the range of a mapped
2462 section, return that section.
2463 find_pc_overlay(pc): find any overlay section that contains
2464 the pc, either in its VMA or its LMA
2465 overlay_is_mapped(sect): true if overlay is marked as mapped
2466 section_is_overlay(sect): true if section's VMA != LMA
2467 pc_in_mapped_range(pc,sec): true if pc belongs to section's VMA
2468 pc_in_unmapped_range(...): true if pc belongs to section's LMA
2469 overlay_mapped_address(...): map an address from section's LMA to VMA
2470 overlay_unmapped_address(...): map an address from section's VMA to LMA
2471 symbol_overlayed_address(...): Return a "current" address for symbol:
2472 either in VMA or LMA depending on whether
2473 the symbol's section is currently mapped
2476 /* Overlay debugging state: */
2478 int overlay_debugging
= 0; /* 0 == off, 1 == manual, -1 == auto */
2479 int overlay_cache_invalid
= 0; /* True if need to refresh mapped state */
2481 /* Target vector for refreshing overlay mapped state */
2482 static void simple_overlay_update (struct obj_section
*);
2483 void (*target_overlay_update
) (struct obj_section
*) = simple_overlay_update
;
2485 /* Function: section_is_overlay (SECTION)
2486 Returns true if SECTION has VMA not equal to LMA, ie.
2487 SECTION is loaded at an address different from where it will "run". */
2490 section_is_overlay (asection
*section
)
2492 if (overlay_debugging
)
2493 if (section
&& section
->lma
!= 0 &&
2494 section
->vma
!= section
->lma
)
2500 /* Function: overlay_invalidate_all (void)
2501 Invalidate the mapped state of all overlay sections (mark it as stale). */
2504 overlay_invalidate_all (void)
2506 struct objfile
*objfile
;
2507 struct obj_section
*sect
;
2509 ALL_OBJSECTIONS (objfile
, sect
)
2510 if (section_is_overlay (sect
->the_bfd_section
))
2511 sect
->ovly_mapped
= -1;
2514 /* Function: overlay_is_mapped (SECTION)
2515 Returns true if section is an overlay, and is currently mapped.
2516 Private: public access is thru function section_is_mapped.
2518 Access to the ovly_mapped flag is restricted to this function, so
2519 that we can do automatic update. If the global flag
2520 OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
2521 overlay_invalidate_all. If the mapped state of the particular
2522 section is stale, then call TARGET_OVERLAY_UPDATE to refresh it. */
2525 overlay_is_mapped (struct obj_section
*osect
)
2527 if (osect
== 0 || !section_is_overlay (osect
->the_bfd_section
))
2530 switch (overlay_debugging
)
2534 return 0; /* overlay debugging off */
2535 case -1: /* overlay debugging automatic */
2536 /* Unles there is a target_overlay_update function,
2537 there's really nothing useful to do here (can't really go auto) */
2538 if (target_overlay_update
)
2540 if (overlay_cache_invalid
)
2542 overlay_invalidate_all ();
2543 overlay_cache_invalid
= 0;
2545 if (osect
->ovly_mapped
== -1)
2546 (*target_overlay_update
) (osect
);
2548 /* fall thru to manual case */
2549 case 1: /* overlay debugging manual */
2550 return osect
->ovly_mapped
== 1;
2554 /* Function: section_is_mapped
2555 Returns true if section is an overlay, and is currently mapped. */
2558 section_is_mapped (asection
*section
)
2560 struct objfile
*objfile
;
2561 struct obj_section
*osect
;
2563 if (overlay_debugging
)
2564 if (section
&& section_is_overlay (section
))
2565 ALL_OBJSECTIONS (objfile
, osect
)
2566 if (osect
->the_bfd_section
== section
)
2567 return overlay_is_mapped (osect
);
2572 /* Function: pc_in_unmapped_range
2573 If PC falls into the lma range of SECTION, return true, else false. */
2576 pc_in_unmapped_range (CORE_ADDR pc
, asection
*section
)
2580 if (overlay_debugging
)
2581 if (section
&& section_is_overlay (section
))
2583 size
= bfd_get_section_size_before_reloc (section
);
2584 if (section
->lma
<= pc
&& pc
< section
->lma
+ size
)
2590 /* Function: pc_in_mapped_range
2591 If PC falls into the vma range of SECTION, return true, else false. */
2594 pc_in_mapped_range (CORE_ADDR pc
, asection
*section
)
2598 if (overlay_debugging
)
2599 if (section
&& section_is_overlay (section
))
2601 size
= bfd_get_section_size_before_reloc (section
);
2602 if (section
->vma
<= pc
&& pc
< section
->vma
+ size
)
2608 /* Function: overlay_unmapped_address (PC, SECTION)
2609 Returns the address corresponding to PC in the unmapped (load) range.
2610 May be the same as PC. */
2613 overlay_unmapped_address (CORE_ADDR pc
, asection
*section
)
2615 if (overlay_debugging
)
2616 if (section
&& section_is_overlay (section
) &&
2617 pc_in_mapped_range (pc
, section
))
2618 return pc
+ section
->lma
- section
->vma
;
2623 /* Function: overlay_mapped_address (PC, SECTION)
2624 Returns the address corresponding to PC in the mapped (runtime) range.
2625 May be the same as PC. */
2628 overlay_mapped_address (CORE_ADDR pc
, asection
*section
)
2630 if (overlay_debugging
)
2631 if (section
&& section_is_overlay (section
) &&
2632 pc_in_unmapped_range (pc
, section
))
2633 return pc
+ section
->vma
- section
->lma
;
2639 /* Function: symbol_overlayed_address
2640 Return one of two addresses (relative to the VMA or to the LMA),
2641 depending on whether the section is mapped or not. */
2644 symbol_overlayed_address (CORE_ADDR address
, asection
*section
)
2646 if (overlay_debugging
)
2648 /* If the symbol has no section, just return its regular address. */
2651 /* If the symbol's section is not an overlay, just return its address */
2652 if (!section_is_overlay (section
))
2654 /* If the symbol's section is mapped, just return its address */
2655 if (section_is_mapped (section
))
2658 * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
2659 * then return its LOADED address rather than its vma address!!
2661 return overlay_unmapped_address (address
, section
);
2666 /* Function: find_pc_overlay (PC)
2667 Return the best-match overlay section for PC:
2668 If PC matches a mapped overlay section's VMA, return that section.
2669 Else if PC matches an unmapped section's VMA, return that section.
2670 Else if PC matches an unmapped section's LMA, return that section. */
2673 find_pc_overlay (CORE_ADDR pc
)
2675 struct objfile
*objfile
;
2676 struct obj_section
*osect
, *best_match
= NULL
;
2678 if (overlay_debugging
)
2679 ALL_OBJSECTIONS (objfile
, osect
)
2680 if (section_is_overlay (osect
->the_bfd_section
))
2682 if (pc_in_mapped_range (pc
, osect
->the_bfd_section
))
2684 if (overlay_is_mapped (osect
))
2685 return osect
->the_bfd_section
;
2689 else if (pc_in_unmapped_range (pc
, osect
->the_bfd_section
))
2692 return best_match
? best_match
->the_bfd_section
: NULL
;
2695 /* Function: find_pc_mapped_section (PC)
2696 If PC falls into the VMA address range of an overlay section that is
2697 currently marked as MAPPED, return that section. Else return NULL. */
2700 find_pc_mapped_section (CORE_ADDR pc
)
2702 struct objfile
*objfile
;
2703 struct obj_section
*osect
;
2705 if (overlay_debugging
)
2706 ALL_OBJSECTIONS (objfile
, osect
)
2707 if (pc_in_mapped_range (pc
, osect
->the_bfd_section
) &&
2708 overlay_is_mapped (osect
))
2709 return osect
->the_bfd_section
;
2714 /* Function: list_overlays_command
2715 Print a list of mapped sections and their PC ranges */
2718 list_overlays_command (char *args
, int from_tty
)
2721 struct objfile
*objfile
;
2722 struct obj_section
*osect
;
2724 if (overlay_debugging
)
2725 ALL_OBJSECTIONS (objfile
, osect
)
2726 if (overlay_is_mapped (osect
))
2732 vma
= bfd_section_vma (objfile
->obfd
, osect
->the_bfd_section
);
2733 lma
= bfd_section_lma (objfile
->obfd
, osect
->the_bfd_section
);
2734 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
2735 name
= bfd_section_name (objfile
->obfd
, osect
->the_bfd_section
);
2737 printf_filtered ("Section %s, loaded at ", name
);
2738 print_address_numeric (lma
, 1, gdb_stdout
);
2739 puts_filtered (" - ");
2740 print_address_numeric (lma
+ size
, 1, gdb_stdout
);
2741 printf_filtered (", mapped at ");
2742 print_address_numeric (vma
, 1, gdb_stdout
);
2743 puts_filtered (" - ");
2744 print_address_numeric (vma
+ size
, 1, gdb_stdout
);
2745 puts_filtered ("\n");
2750 printf_filtered ("No sections are mapped.\n");
2753 /* Function: map_overlay_command
2754 Mark the named section as mapped (ie. residing at its VMA address). */
2757 map_overlay_command (char *args
, int from_tty
)
2759 struct objfile
*objfile
, *objfile2
;
2760 struct obj_section
*sec
, *sec2
;
2763 if (!overlay_debugging
)
2765 Overlay debugging not enabled. Use either the 'overlay auto' or\n\
2766 the 'overlay manual' command.");
2768 if (args
== 0 || *args
== 0)
2769 error ("Argument required: name of an overlay section");
2771 /* First, find a section matching the user supplied argument */
2772 ALL_OBJSECTIONS (objfile
, sec
)
2773 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
2775 /* Now, check to see if the section is an overlay. */
2776 bfdsec
= sec
->the_bfd_section
;
2777 if (!section_is_overlay (bfdsec
))
2778 continue; /* not an overlay section */
2780 /* Mark the overlay as "mapped" */
2781 sec
->ovly_mapped
= 1;
2783 /* Next, make a pass and unmap any sections that are
2784 overlapped by this new section: */
2785 ALL_OBJSECTIONS (objfile2
, sec2
)
2786 if (sec2
->ovly_mapped
&&
2788 sec
->the_bfd_section
!= sec2
->the_bfd_section
&&
2789 (pc_in_mapped_range (sec2
->addr
, sec
->the_bfd_section
) ||
2790 pc_in_mapped_range (sec2
->endaddr
, sec
->the_bfd_section
)))
2793 printf_filtered ("Note: section %s unmapped by overlap\n",
2794 bfd_section_name (objfile
->obfd
,
2795 sec2
->the_bfd_section
));
2796 sec2
->ovly_mapped
= 0; /* sec2 overlaps sec: unmap sec2 */
2800 error ("No overlay section called %s", args
);
2803 /* Function: unmap_overlay_command
2804 Mark the overlay section as unmapped
2805 (ie. resident in its LMA address range, rather than the VMA range). */
2808 unmap_overlay_command (char *args
, int from_tty
)
2810 struct objfile
*objfile
;
2811 struct obj_section
*sec
;
2813 if (!overlay_debugging
)
2815 Overlay debugging not enabled. Use either the 'overlay auto' or\n\
2816 the 'overlay manual' command.");
2818 if (args
== 0 || *args
== 0)
2819 error ("Argument required: name of an overlay section");
2821 /* First, find a section matching the user supplied argument */
2822 ALL_OBJSECTIONS (objfile
, sec
)
2823 if (!strcmp (bfd_section_name (objfile
->obfd
, sec
->the_bfd_section
), args
))
2825 if (!sec
->ovly_mapped
)
2826 error ("Section %s is not mapped", args
);
2827 sec
->ovly_mapped
= 0;
2830 error ("No overlay section called %s", args
);
2833 /* Function: overlay_auto_command
2834 A utility command to turn on overlay debugging.
2835 Possibly this should be done via a set/show command. */
2838 overlay_auto_command (char *args
, int from_tty
)
2840 overlay_debugging
= -1;
2842 printf_filtered ("Automatic overlay debugging enabled.");
2845 /* Function: overlay_manual_command
2846 A utility command to turn on overlay debugging.
2847 Possibly this should be done via a set/show command. */
2850 overlay_manual_command (char *args
, int from_tty
)
2852 overlay_debugging
= 1;
2854 printf_filtered ("Overlay debugging enabled.");
2857 /* Function: overlay_off_command
2858 A utility command to turn on overlay debugging.
2859 Possibly this should be done via a set/show command. */
2862 overlay_off_command (char *args
, int from_tty
)
2864 overlay_debugging
= 0;
2866 printf_filtered ("Overlay debugging disabled.");
2870 overlay_load_command (char *args
, int from_tty
)
2872 if (target_overlay_update
)
2873 (*target_overlay_update
) (NULL
);
2875 error ("This target does not know how to read its overlay state.");
2878 /* Function: overlay_command
2879 A place-holder for a mis-typed command */
2881 /* Command list chain containing all defined "overlay" subcommands. */
2882 struct cmd_list_element
*overlaylist
;
2885 overlay_command (char *args
, int from_tty
)
2888 ("\"overlay\" must be followed by the name of an overlay command.\n");
2889 help_list (overlaylist
, "overlay ", -1, gdb_stdout
);
2893 /* Target Overlays for the "Simplest" overlay manager:
2895 This is GDB's default target overlay layer. It works with the
2896 minimal overlay manager supplied as an example by Cygnus. The
2897 entry point is via a function pointer "target_overlay_update",
2898 so targets that use a different runtime overlay manager can
2899 substitute their own overlay_update function and take over the
2902 The overlay_update function pokes around in the target's data structures
2903 to see what overlays are mapped, and updates GDB's overlay mapping with
2906 In this simple implementation, the target data structures are as follows:
2907 unsigned _novlys; /# number of overlay sections #/
2908 unsigned _ovly_table[_novlys][4] = {
2909 {VMA, SIZE, LMA, MAPPED}, /# one entry per overlay section #/
2910 {..., ..., ..., ...},
2912 unsigned _novly_regions; /# number of overlay regions #/
2913 unsigned _ovly_region_table[_novly_regions][3] = {
2914 {VMA, SIZE, MAPPED_TO_LMA}, /# one entry per overlay region #/
2917 These functions will attempt to update GDB's mappedness state in the
2918 symbol section table, based on the target's mappedness state.
2920 To do this, we keep a cached copy of the target's _ovly_table, and
2921 attempt to detect when the cached copy is invalidated. The main
2922 entry point is "simple_overlay_update(SECT), which looks up SECT in
2923 the cached table and re-reads only the entry for that section from
2924 the target (whenever possible).
2927 /* Cached, dynamically allocated copies of the target data structures: */
2928 static unsigned (*cache_ovly_table
)[4] = 0;
2930 static unsigned (*cache_ovly_region_table
)[3] = 0;
2932 static unsigned cache_novlys
= 0;
2934 static unsigned cache_novly_regions
= 0;
2936 static CORE_ADDR cache_ovly_table_base
= 0;
2938 static CORE_ADDR cache_ovly_region_table_base
= 0;
2942 VMA
, SIZE
, LMA
, MAPPED
2944 #define TARGET_LONG_BYTES (TARGET_LONG_BIT / TARGET_CHAR_BIT)
2946 /* Throw away the cached copy of _ovly_table */
2948 simple_free_overlay_table (void)
2950 if (cache_ovly_table
)
2951 free (cache_ovly_table
);
2953 cache_ovly_table
= NULL
;
2954 cache_ovly_table_base
= 0;
2958 /* Throw away the cached copy of _ovly_region_table */
2960 simple_free_overlay_region_table (void)
2962 if (cache_ovly_region_table
)
2963 free (cache_ovly_region_table
);
2964 cache_novly_regions
= 0;
2965 cache_ovly_region_table
= NULL
;
2966 cache_ovly_region_table_base
= 0;
2970 /* Read an array of ints from the target into a local buffer.
2971 Convert to host order. int LEN is number of ints */
2973 read_target_long_array (CORE_ADDR memaddr
, unsigned int *myaddr
, int len
)
2975 char *buf
= alloca (len
* TARGET_LONG_BYTES
);
2978 read_memory (memaddr
, buf
, len
* TARGET_LONG_BYTES
);
2979 for (i
= 0; i
< len
; i
++)
2980 myaddr
[i
] = extract_unsigned_integer (TARGET_LONG_BYTES
* i
+ buf
,
2984 /* Find and grab a copy of the target _ovly_table
2985 (and _novlys, which is needed for the table's size) */
2987 simple_read_overlay_table (void)
2989 struct minimal_symbol
*msym
;
2991 simple_free_overlay_table ();
2992 msym
= lookup_minimal_symbol ("_novlys", 0, 0);
2994 cache_novlys
= read_memory_integer (SYMBOL_VALUE_ADDRESS (msym
), 4);
2996 return 0; /* failure */
2997 cache_ovly_table
= (void *) xmalloc (cache_novlys
* sizeof (*cache_ovly_table
));
2998 if (cache_ovly_table
!= NULL
)
3000 msym
= lookup_minimal_symbol ("_ovly_table", 0, 0);
3003 cache_ovly_table_base
= SYMBOL_VALUE_ADDRESS (msym
);
3004 read_target_long_array (cache_ovly_table_base
,
3005 (int *) cache_ovly_table
,
3009 return 0; /* failure */
3012 return 0; /* failure */
3013 return 1; /* SUCCESS */
3017 /* Find and grab a copy of the target _ovly_region_table
3018 (and _novly_regions, which is needed for the table's size) */
3020 simple_read_overlay_region_table (void)
3022 struct minimal_symbol
*msym
;
3024 simple_free_overlay_region_table ();
3025 msym
= lookup_minimal_symbol ("_novly_regions", 0, 0);
3027 cache_novly_regions
= read_memory_integer (SYMBOL_VALUE_ADDRESS (msym
), 4);
3029 return 0; /* failure */
3030 cache_ovly_region_table
= (void *) xmalloc (cache_novly_regions
* 12);
3031 if (cache_ovly_region_table
!= NULL
)
3033 msym
= lookup_minimal_symbol ("_ovly_region_table", 0, 0);
3036 cache_ovly_region_table_base
= SYMBOL_VALUE_ADDRESS (msym
);
3037 read_target_long_array (cache_ovly_region_table_base
,
3038 (int *) cache_ovly_region_table
,
3039 cache_novly_regions
* 3);
3042 return 0; /* failure */
3045 return 0; /* failure */
3046 return 1; /* SUCCESS */
3050 /* Function: simple_overlay_update_1
3051 A helper function for simple_overlay_update. Assuming a cached copy
3052 of _ovly_table exists, look through it to find an entry whose vma,
3053 lma and size match those of OSECT. Re-read the entry and make sure
3054 it still matches OSECT (else the table may no longer be valid).
3055 Set OSECT's mapped state to match the entry. Return: 1 for
3056 success, 0 for failure. */
3059 simple_overlay_update_1 (struct obj_section
*osect
)
3063 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
3064 for (i
= 0; i
< cache_novlys
; i
++)
3065 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3066 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3067 cache_ovly_table[i][SIZE] == size */ )
3069 read_target_long_array (cache_ovly_table_base
+ i
* TARGET_LONG_BYTES
,
3070 (int *) cache_ovly_table
[i
], 4);
3071 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3072 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3073 cache_ovly_table[i][SIZE] == size */ )
3075 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3078 else /* Warning! Warning! Target's ovly table has changed! */
3084 /* Function: simple_overlay_update
3085 If OSECT is NULL, then update all sections' mapped state
3086 (after re-reading the entire target _ovly_table).
3087 If OSECT is non-NULL, then try to find a matching entry in the
3088 cached ovly_table and update only OSECT's mapped state.
3089 If a cached entry can't be found or the cache isn't valid, then
3090 re-read the entire cache, and go ahead and update all sections. */
3093 simple_overlay_update (struct obj_section
*osect
)
3095 struct objfile
*objfile
;
3097 /* Were we given an osect to look up? NULL means do all of them. */
3099 /* Have we got a cached copy of the target's overlay table? */
3100 if (cache_ovly_table
!= NULL
)
3101 /* Does its cached location match what's currently in the symtab? */
3102 if (cache_ovly_table_base
==
3103 SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", 0, 0)))
3104 /* Then go ahead and try to look up this single section in the cache */
3105 if (simple_overlay_update_1 (osect
))
3106 /* Found it! We're done. */
3109 /* Cached table no good: need to read the entire table anew.
3110 Or else we want all the sections, in which case it's actually
3111 more efficient to read the whole table in one block anyway. */
3113 if (simple_read_overlay_table () == 0) /* read failed? No table? */
3115 warning ("Failed to read the target overlay mapping table.");
3118 /* Now may as well update all sections, even if only one was requested. */
3119 ALL_OBJSECTIONS (objfile
, osect
)
3120 if (section_is_overlay (osect
->the_bfd_section
))
3124 size
= bfd_get_section_size_before_reloc (osect
->the_bfd_section
);
3125 for (i
= 0; i
< cache_novlys
; i
++)
3126 if (cache_ovly_table
[i
][VMA
] == osect
->the_bfd_section
->vma
&&
3127 cache_ovly_table
[i
][LMA
] == osect
->the_bfd_section
->lma
/* &&
3128 cache_ovly_table[i][SIZE] == size */ )
3129 { /* obj_section matches i'th entry in ovly_table */
3130 osect
->ovly_mapped
= cache_ovly_table
[i
][MAPPED
];
3131 break; /* finished with inner for loop: break out */
3138 _initialize_symfile (void)
3140 struct cmd_list_element
*c
;
3142 c
= add_cmd ("symbol-file", class_files
, symbol_file_command
,
3143 "Load symbol table from executable file FILE.\n\
3144 The `file' command can also load symbol tables, as well as setting the file\n\
3145 to execute.", &cmdlist
);
3146 c
->completer
= filename_completer
;
3148 c
= add_cmd ("add-symbol-file", class_files
, add_symbol_file_command
,
3149 "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\
3150 Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\
3151 ADDR is the starting address of the file's text.\n\
3152 The optional arguments are section-name section-address pairs and\n\
3153 should be specified if the data and bss segments are not contiguous\n\
3154 with the text. SECT is a section name to be loaded at SECT_ADDR.",
3156 c
->completer
= filename_completer
;
3158 c
= add_cmd ("add-shared-symbol-files", class_files
,
3159 add_shared_symbol_files_command
,
3160 "Load the symbols from shared objects in the dynamic linker's link map.",
3162 c
= add_alias_cmd ("assf", "add-shared-symbol-files", class_files
, 1,
3165 c
= add_cmd ("load", class_files
, load_command
,
3166 "Dynamically load FILE into the running program, and record its symbols\n\
3167 for access from GDB.", &cmdlist
);
3168 c
->completer
= filename_completer
;
3171 (add_set_cmd ("symbol-reloading", class_support
, var_boolean
,
3172 (char *) &symbol_reloading
,
3173 "Set dynamic symbol table reloading multiple times in one run.",
3177 add_prefix_cmd ("overlay", class_support
, overlay_command
,
3178 "Commands for debugging overlays.", &overlaylist
,
3179 "overlay ", 0, &cmdlist
);
3181 add_com_alias ("ovly", "overlay", class_alias
, 1);
3182 add_com_alias ("ov", "overlay", class_alias
, 1);
3184 add_cmd ("map-overlay", class_support
, map_overlay_command
,
3185 "Assert that an overlay section is mapped.", &overlaylist
);
3187 add_cmd ("unmap-overlay", class_support
, unmap_overlay_command
,
3188 "Assert that an overlay section is unmapped.", &overlaylist
);
3190 add_cmd ("list-overlays", class_support
, list_overlays_command
,
3191 "List mappings of overlay sections.", &overlaylist
);
3193 add_cmd ("manual", class_support
, overlay_manual_command
,
3194 "Enable overlay debugging.", &overlaylist
);
3195 add_cmd ("off", class_support
, overlay_off_command
,
3196 "Disable overlay debugging.", &overlaylist
);
3197 add_cmd ("auto", class_support
, overlay_auto_command
,
3198 "Enable automatic overlay debugging.", &overlaylist
);
3199 add_cmd ("load-target", class_support
, overlay_load_command
,
3200 "Read the overlay mapping state from the target.", &overlaylist
);
3202 /* Filename extension to source language lookup table: */
3203 init_filename_language_table ();
3204 c
= add_set_cmd ("extension-language", class_files
, var_string_noescape
,
3206 "Set mapping between filename extension and source language.\n\
3207 Usage: set extension-language .foo bar",
3209 c
->function
.cfunc
= set_ext_lang_command
;
3211 add_info ("extensions", info_ext_lang_command
,
3212 "All filename extensions associated with a source language.");
3215 (add_set_cmd ("download-write-size", class_obscure
,
3216 var_integer
, (char *) &download_write_size
,
3217 "Set the write size used when downloading a program.\n"
3218 "Only used when downloading a program onto a remote\n"
3219 "target. Specify zero, or a negative value, to disable\n"
3220 "blocked writes. The actual size of each transfer is also\n"
3221 "limited by the size of the target packet and the memory\n"