1 /* Work with executable files, for GDB.
3 Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997,
4 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009, 2010
5 Free Software Foundation, Inc.
7 This file is part of GDB.
9 This program is free software; you can redistribute it and/or modify
10 it under the terms of the GNU General Public License as published by
11 the Free Software Foundation; either version 3 of the License, or
12 (at your option) any later version.
14 This program is distributed in the hope that it will be useful,
15 but WITHOUT ANY WARRANTY; without even the implied warranty of
16 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 GNU General Public License for more details.
19 You should have received a copy of the GNU General Public License
20 along with this program. If not, see <http://www.gnu.org/licenses/>. */
30 #include "completer.h"
34 #include "arch-utils.h"
35 #include "gdbthread.h"
36 #include "progspace.h"
39 #include "readline/readline.h"
40 #include "gdb_string.h"
47 #include "xcoffsolib.h"
49 struct vmap
*map_vmap (bfd
*, bfd
*);
51 void (*deprecated_file_changed_hook
) (char *);
53 /* Prototypes for local functions */
55 static void file_command (char *, int);
57 static void set_section_command (char *, int);
59 static void exec_files_info (struct target_ops
*);
61 static void init_exec_ops (void);
63 void _initialize_exec (void);
65 /* The target vector for executable files. */
67 struct target_ops exec_ops
;
69 /* True if the exec target is pushed on the stack. */
70 static int using_exec_ops
;
72 /* Whether to open exec and core files read-only or read-write. */
76 show_write_files (struct ui_file
*file
, int from_tty
,
77 struct cmd_list_element
*c
, const char *value
)
79 fprintf_filtered (file
, _("Writing into executable and core files is %s.\n"),
87 exec_open (char *args
, int from_tty
)
89 target_preopen (from_tty
);
90 exec_file_attach (args
, from_tty
);
93 /* Close and clear exec_bfd. If we end up with no target sections to
94 read memory from, this unpushes the exec_ops target. */
101 bfd
*abfd
= exec_bfd
;
102 char *name
= bfd_get_filename (abfd
);
104 if (!bfd_close (abfd
))
105 warning (_("cannot close \"%s\": %s"),
106 name
, bfd_errmsg (bfd_get_error ()));
109 /* Removing target sections may close the exec_ops target.
110 Clear exec_bfd before doing so to prevent recursion. */
114 remove_target_sections (abfd
);
118 /* This is the target_close implementation. Clears all target
119 sections and closes all executable bfds from all program spaces. */
122 exec_close_1 (int quitting
)
124 int need_symtab_cleanup
= 0;
125 struct vmap
*vp
, *nxt
;
129 for (nxt
= vmap
; nxt
!= NULL
;)
134 /* if there is an objfile associated with this bfd,
135 free_objfile() will do proper cleanup of objfile *and* bfd. */
139 free_objfile (vp
->objfile
);
140 need_symtab_cleanup
= 1;
142 else if (vp
->bfd
!= exec_bfd
)
143 /* FIXME-leak: We should be freeing vp->name too, I think. */
144 if (!bfd_close (vp
->bfd
))
145 warning (_("cannot close \"%s\": %s"),
146 vp
->name
, bfd_errmsg (bfd_get_error ()));
154 struct program_space
*ss
;
155 struct cleanup
*old_chain
;
157 old_chain
= save_current_program_space ();
160 set_current_program_space (ss
);
162 /* Delete all target sections. */
164 (current_target_sections
,
165 -resize_section_table (current_target_sections
, 0));
170 do_cleanups (old_chain
);
175 exec_file_clear (int from_tty
)
177 /* Remove exec file. */
181 printf_unfiltered (_("No executable file now.\n"));
184 /* Set FILENAME as the new exec file.
186 This function is intended to be behave essentially the same
187 as exec_file_command, except that the latter will detect when
188 a target is being debugged, and will ask the user whether it
189 should be shut down first. (If the answer is "no", then the
190 new file is ignored.)
192 This file is used by exec_file_command, to do the work of opening
193 and processing the exec file after any prompting has happened.
195 And, it is used by child_attach, when the attach command was
196 given a pid but not a exec pathname, and the attach command could
197 figure out the pathname from the pid. (In this case, we shouldn't
198 ask the user whether the current target should be shut down --
199 we're supplying the exec pathname late for good reason.) */
202 exec_file_attach (char *filename
, int from_tty
)
204 /* Remove any previous exec file. */
207 /* Now open and digest the file the user requested, if any. */
212 printf_unfiltered (_("No executable file now.\n"));
214 set_gdbarch_from_file (NULL
);
218 struct cleanup
*cleanups
;
219 char *scratch_pathname
;
221 struct target_section
*sections
= NULL
, *sections_end
= NULL
;
223 scratch_chan
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, filename
,
224 write_files
? O_RDWR
| O_BINARY
: O_RDONLY
| O_BINARY
,
226 #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__)
227 if (scratch_chan
< 0)
229 char *exename
= alloca (strlen (filename
) + 5);
230 strcat (strcpy (exename
, filename
), ".exe");
231 scratch_chan
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, exename
,
232 write_files
? O_RDWR
| O_BINARY
: O_RDONLY
| O_BINARY
,
236 if (scratch_chan
< 0)
237 perror_with_name (filename
);
238 exec_bfd
= bfd_fopen (scratch_pathname
, gnutarget
,
239 write_files
? FOPEN_RUB
: FOPEN_RB
,
244 close (scratch_chan
);
245 error (_("\"%s\": could not open as an executable file: %s"),
246 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
249 /* At this point, scratch_pathname and exec_bfd->name both point to the
250 same malloc'd string. However exec_close() will attempt to free it
251 via the exec_bfd->name pointer, so we need to make another copy and
252 leave exec_bfd as the new owner of the original copy. */
253 scratch_pathname
= xstrdup (scratch_pathname
);
254 cleanups
= make_cleanup (xfree
, scratch_pathname
);
256 if (!bfd_check_format (exec_bfd
, bfd_object
))
258 /* Make sure to close exec_bfd, or else "run" might try to use
261 error (_("\"%s\": not in executable format: %s"),
262 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
265 /* FIXME - This should only be run for RS6000, but the ifdef is a poor
266 way to accomplish. */
267 #ifdef DEPRECATED_IBM6000_TARGET
268 /* Setup initial vmap. */
270 map_vmap (exec_bfd
, 0);
273 /* Make sure to close exec_bfd, or else "run" might try to use
276 error (_("\"%s\": can't find the file sections: %s"),
277 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
279 #endif /* DEPRECATED_IBM6000_TARGET */
281 if (build_section_table (exec_bfd
, §ions
, §ions_end
))
283 /* Make sure to close exec_bfd, or else "run" might try to use
286 error (_("\"%s\": can't find the file sections: %s"),
287 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
290 exec_bfd_mtime
= bfd_get_mtime (exec_bfd
);
294 set_gdbarch_from_file (exec_bfd
);
296 /* Add the executable's sections to the current address spaces'
297 list of sections. This possibly pushes the exec_ops
299 add_target_sections (sections
, sections_end
);
302 /* Tell display code (if any) about the changed file name. */
303 if (deprecated_exec_file_display_hook
)
304 (*deprecated_exec_file_display_hook
) (filename
);
306 do_cleanups (cleanups
);
308 bfd_cache_close_all ();
309 observer_notify_executable_changed ();
312 /* Process the first arg in ARGS as the new exec file.
314 Note that we have to explicitly ignore additional args, since we can
315 be called from file_command(), which also calls symbol_file_command()
316 which can take multiple args.
318 If ARGS is NULL, we just want to close the exec file. */
321 exec_file_command (char *args
, int from_tty
)
326 if (from_tty
&& target_has_execution
327 && !query (_("A program is being debugged already.\n"
328 "Are you sure you want to change the file? ")))
329 error (_("File not changed."));
333 struct cleanup
*cleanups
;
335 /* Scan through the args and pick up the first non option arg
338 argv
= gdb_buildargv (args
);
339 cleanups
= make_cleanup_freeargv (argv
);
341 for (; (*argv
!= NULL
) && (**argv
== '-'); argv
++)
345 error (_("No executable file name was specified"));
347 filename
= tilde_expand (*argv
);
348 make_cleanup (xfree
, filename
);
349 exec_file_attach (filename
, from_tty
);
351 do_cleanups (cleanups
);
354 exec_file_attach (NULL
, from_tty
);
357 /* Set both the exec file and the symbol file, in one command.
358 What a novelty. Why did GDB go through four major releases before this
359 command was added? */
362 file_command (char *arg
, int from_tty
)
364 /* FIXME, if we lose on reading the symbol file, we should revert
365 the exec file, but that's rough. */
366 exec_file_command (arg
, from_tty
);
367 symbol_file_command (arg
, from_tty
);
368 if (deprecated_file_changed_hook
)
369 deprecated_file_changed_hook (arg
);
373 /* Locate all mappable sections of a BFD file.
374 table_pp_char is a char * to get it through bfd_map_over_sections;
375 we cast it back to its proper type. */
378 add_to_section_table (bfd
*abfd
, struct bfd_section
*asect
,
381 struct target_section
**table_pp
= (struct target_section
**) table_pp_char
;
384 /* Check the section flags, but do not discard zero-length sections, since
385 some symbols may still be attached to this section. For instance, we
386 encountered on sparc-solaris 2.10 a shared library with an empty .bss
387 section to which a symbol named "_end" was attached. The address
388 of this symbol still needs to be relocated. */
389 aflag
= bfd_get_section_flags (abfd
, asect
);
390 if (!(aflag
& SEC_ALLOC
))
393 (*table_pp
)->bfd
= abfd
;
394 (*table_pp
)->the_bfd_section
= asect
;
395 (*table_pp
)->addr
= bfd_section_vma (abfd
, asect
);
396 (*table_pp
)->endaddr
= (*table_pp
)->addr
+ bfd_section_size (abfd
, asect
);
401 resize_section_table (struct target_section_table
*table
, int num_added
)
403 struct target_section
*old_value
;
407 old_value
= table
->sections
;
408 old_count
= table
->sections_end
- table
->sections
;
410 new_count
= num_added
+ old_count
;
414 table
->sections
= xrealloc (table
->sections
,
415 sizeof (struct target_section
) * new_count
);
416 table
->sections_end
= table
->sections
+ new_count
;
420 xfree (table
->sections
);
421 table
->sections
= table
->sections_end
= NULL
;
427 /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
428 Returns 0 if OK, 1 on error. */
431 build_section_table (struct bfd
*some_bfd
, struct target_section
**start
,
432 struct target_section
**end
)
436 count
= bfd_count_sections (some_bfd
);
439 *start
= (struct target_section
*) xmalloc (count
* sizeof (**start
));
441 bfd_map_over_sections (some_bfd
, add_to_section_table
, (char *) end
);
442 if (*end
> *start
+ count
)
443 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
444 /* We could realloc the table, but it probably loses for most files. */
448 /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the
449 current set of target sections. */
452 add_target_sections (struct target_section
*sections
,
453 struct target_section
*sections_end
)
456 struct target_section_table
*table
= current_target_sections
;
458 count
= sections_end
- sections
;
462 int space
= resize_section_table (table
, count
);
463 memcpy (table
->sections
+ space
,
464 sections
, count
* sizeof (sections
[0]));
466 /* If these are the first file sections we can provide memory
467 from, push the file_stratum target. */
471 push_target (&exec_ops
);
476 /* Remove all target sections taken from ABFD. */
479 remove_target_sections (bfd
*abfd
)
481 struct target_section
*src
, *dest
;
483 struct target_section_table
*table
= current_target_sections
;
485 dest
= table
->sections
;
486 for (src
= table
->sections
; src
< table
->sections_end
; src
++)
487 if (src
->bfd
!= abfd
)
489 /* Keep this section. */
495 /* If we've dropped any sections, resize the section table. */
500 old_count
= resize_section_table (table
, dest
- src
);
502 /* If we don't have any more sections to read memory from,
503 remove the file_stratum target from the stack. */
504 if (old_count
+ (dest
- src
) == 0)
506 struct program_space
*pspace
;
509 if (pspace
->target_sections
.sections
510 != pspace
->target_sections
.sections_end
)
513 unpush_target (&exec_ops
);
520 bfdsec_to_vmap (struct bfd
*abfd
, struct bfd_section
*sect
, void *arg3
)
522 struct vmap_and_bfd
*vmap_bfd
= (struct vmap_and_bfd
*) arg3
;
525 vp
= vmap_bfd
->pvmap
;
527 if ((bfd_get_section_flags (abfd
, sect
) & SEC_LOAD
) == 0)
530 if (strcmp (bfd_section_name (abfd
, sect
), ".text") == 0)
532 vp
->tstart
= bfd_section_vma (abfd
, sect
);
533 vp
->tend
= vp
->tstart
+ bfd_section_size (abfd
, sect
);
534 vp
->tvma
= bfd_section_vma (abfd
, sect
);
535 vp
->toffs
= sect
->filepos
;
537 else if (strcmp (bfd_section_name (abfd
, sect
), ".data") == 0)
539 vp
->dstart
= bfd_section_vma (abfd
, sect
);
540 vp
->dend
= vp
->dstart
+ bfd_section_size (abfd
, sect
);
541 vp
->dvma
= bfd_section_vma (abfd
, sect
);
543 /* Silently ignore other types of sections. (FIXME?) */
546 /* Make a vmap for ABFD which might be a member of the archive ARCH.
547 Return the new vmap. */
550 map_vmap (bfd
*abfd
, bfd
*arch
)
552 struct vmap_and_bfd vmap_bfd
;
553 struct vmap
*vp
, **vpp
;
555 vp
= (struct vmap
*) xmalloc (sizeof (*vp
));
556 memset ((char *) vp
, '\0', sizeof (*vp
));
559 vp
->name
= bfd_get_filename (arch
? arch
: abfd
);
560 vp
->member
= arch
? bfd_get_filename (abfd
) : "";
562 vmap_bfd
.pbfd
= arch
;
564 bfd_map_over_sections (abfd
, bfdsec_to_vmap
, &vmap_bfd
);
566 /* Find the end of the list and append. */
567 for (vpp
= &vmap
; *vpp
; vpp
= &(*vpp
)->nxt
)
576 section_table_xfer_memory_partial (gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
577 ULONGEST offset
, LONGEST len
,
578 struct target_section
*sections
,
579 struct target_section
*sections_end
,
580 const char *section_name
)
583 struct target_section
*p
;
584 ULONGEST memaddr
= offset
;
585 ULONGEST memend
= memaddr
+ len
;
588 internal_error (__FILE__
, __LINE__
, _("failed internal consistency check"));
590 for (p
= sections
; p
< sections_end
; p
++)
592 if (section_name
&& strcmp (section_name
, p
->the_bfd_section
->name
) != 0)
593 continue; /* not the section we need */
594 if (memaddr
>= p
->addr
)
596 if (memend
<= p
->endaddr
)
598 /* Entire transfer is within this section. */
600 res
= bfd_set_section_contents (p
->bfd
, p
->the_bfd_section
,
601 writebuf
, memaddr
- p
->addr
,
604 res
= bfd_get_section_contents (p
->bfd
, p
->the_bfd_section
,
605 readbuf
, memaddr
- p
->addr
,
607 return (res
!= 0) ? len
: 0;
609 else if (memaddr
>= p
->endaddr
)
611 /* This section ends before the transfer starts. */
616 /* This section overlaps the transfer. Just do half. */
617 len
= p
->endaddr
- memaddr
;
619 res
= bfd_set_section_contents (p
->bfd
, p
->the_bfd_section
,
620 writebuf
, memaddr
- p
->addr
,
623 res
= bfd_get_section_contents (p
->bfd
, p
->the_bfd_section
,
624 readbuf
, memaddr
- p
->addr
,
626 return (res
!= 0) ? len
: 0;
631 return 0; /* We can't help */
634 struct target_section_table
*
635 exec_get_section_table (struct target_ops
*ops
)
637 return current_target_sections
;
641 exec_xfer_partial (struct target_ops
*ops
, enum target_object object
,
642 const char *annex
, gdb_byte
*readbuf
,
643 const gdb_byte
*writebuf
,
644 ULONGEST offset
, LONGEST len
)
646 struct target_section_table
*table
= target_get_section_table (ops
);
648 if (object
== TARGET_OBJECT_MEMORY
)
649 return section_table_xfer_memory_partial (readbuf
, writebuf
,
660 print_section_info (struct target_section_table
*t
, bfd
*abfd
)
662 struct gdbarch
*gdbarch
= gdbarch_from_bfd (abfd
);
663 struct target_section
*p
;
664 /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */
665 int wid
= gdbarch_addr_bit (gdbarch
) <= 32 ? 8 : 16;
667 printf_filtered ("\t`%s', ", bfd_get_filename (abfd
));
669 printf_filtered (_("file type %s.\n"), bfd_get_target (abfd
));
670 if (abfd
== exec_bfd
)
672 /* gcc-3.4 does not like the initialization in <p == t->sections_end>. */
673 bfd_vma displacement
= 0;
675 for (p
= t
->sections
; p
< t
->sections_end
; p
++)
677 asection
*asect
= p
->the_bfd_section
;
679 if ((bfd_get_section_flags (abfd
, asect
) & (SEC_ALLOC
| SEC_LOAD
))
680 != (SEC_ALLOC
| SEC_LOAD
))
683 if (bfd_get_section_vma (abfd
, asect
) <= abfd
->start_address
684 && abfd
->start_address
< (bfd_get_section_vma (abfd
, asect
)
685 + bfd_get_section_size (asect
)))
687 displacement
= p
->addr
- bfd_get_section_vma (abfd
, asect
);
691 if (p
== t
->sections_end
)
692 warning (_("Cannot find section for the entry point of %s.\n"),
693 bfd_get_filename (abfd
));
695 printf_filtered (_("\tEntry point: %s\n"),
696 paddress (gdbarch
, (bfd_get_start_address (abfd
)
699 for (p
= t
->sections
; p
< t
->sections_end
; p
++)
701 printf_filtered ("\t%s", hex_string_custom (p
->addr
, wid
));
702 printf_filtered (" - %s", hex_string_custom (p
->endaddr
, wid
));
704 /* FIXME: A format of "08l" is not wide enough for file offsets
705 larger than 4GB. OTOH, making it "016l" isn't desirable either
706 since most output will then be much wider than necessary. It
707 may make sense to test the size of the file and choose the
708 format string accordingly. */
709 /* FIXME: i18n: Need to rewrite this sentence. */
711 printf_filtered (" @ %s",
712 hex_string_custom (p
->the_bfd_section
->filepos
, 8));
713 printf_filtered (" is %s", bfd_section_name (p
->bfd
, p
->the_bfd_section
));
715 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
716 printf_filtered ("\n");
721 exec_files_info (struct target_ops
*t
)
723 print_section_info (current_target_sections
, exec_bfd
);
727 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
730 printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap
->name
);
731 printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n",
732 addr_size
* 2, "tstart",
733 addr_size
* 2, "tend",
734 addr_size
* 2, "dstart",
735 addr_size
* 2, "dend",
739 for (vp
= vmap
; vp
; vp
= vp
->nxt
)
740 printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n",
741 phex (vp
->tstart
, addr_size
),
742 phex (vp
->tend
, addr_size
),
743 phex (vp
->dstart
, addr_size
),
744 phex (vp
->dend
, addr_size
),
746 *vp
->member
? "(" : "", vp
->member
,
747 *vp
->member
? ")" : "");
752 set_section_command (char *args
, int from_tty
)
754 struct target_section
*p
;
757 unsigned long secaddr
;
760 struct target_section_table
*table
;
763 error (_("Must specify section name and its virtual address"));
765 /* Parse out section name */
766 for (secname
= args
; !isspace (*args
); args
++);
767 seclen
= args
- secname
;
769 /* Parse out new virtual address */
770 secaddr
= parse_and_eval_address (args
);
772 table
= current_target_sections
;
773 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
775 if (!strncmp (secname
, bfd_section_name (exec_bfd
, p
->the_bfd_section
), seclen
)
776 && bfd_section_name (exec_bfd
, p
->the_bfd_section
)[seclen
] == '\0')
778 offset
= secaddr
- p
->addr
;
780 p
->endaddr
+= offset
;
782 exec_files_info (&exec_ops
);
786 if (seclen
>= sizeof (secprint
))
787 seclen
= sizeof (secprint
) - 1;
788 strncpy (secprint
, secname
, seclen
);
789 secprint
[seclen
] = '\0';
790 error (_("Section %s not found"), secprint
);
793 /* If we can find a section in FILENAME with BFD index INDEX, adjust
797 exec_set_section_address (const char *filename
, int index
, CORE_ADDR address
)
799 struct target_section
*p
;
800 struct target_section_table
*table
;
802 table
= current_target_sections
;
803 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
805 if (strcmp (filename
, p
->bfd
->filename
) == 0
806 && index
== p
->the_bfd_section
->index
)
808 p
->endaddr
+= address
- p
->addr
;
814 /* If mourn is being called in all the right places, this could be say
815 `gdb internal error' (since generic_mourn calls
816 breakpoint_init_inferior). */
819 ignore (struct gdbarch
*gdbarch
, struct bp_target_info
*bp_tgt
)
825 exec_has_memory (struct target_ops
*ops
)
827 /* We can provide memory if we have any file/target sections to read
829 return (current_target_sections
->sections
830 != current_target_sections
->sections_end
);
833 /* Find mapped memory. */
836 exec_set_find_memory_regions (int (*func
) (int (*) (CORE_ADDR
,
842 exec_ops
.to_find_memory_regions
= func
;
845 static char *exec_make_note_section (bfd
*, int *);
847 /* Fill in the exec file target vector. Very few entries need to be
853 exec_ops
.to_shortname
= "exec";
854 exec_ops
.to_longname
= "Local exec file";
855 exec_ops
.to_doc
= "Use an executable file as a target.\n\
856 Specify the filename of the executable file.";
857 exec_ops
.to_open
= exec_open
;
858 exec_ops
.to_close
= exec_close_1
;
859 exec_ops
.to_attach
= find_default_attach
;
860 exec_ops
.to_xfer_partial
= exec_xfer_partial
;
861 exec_ops
.to_get_section_table
= exec_get_section_table
;
862 exec_ops
.to_files_info
= exec_files_info
;
863 exec_ops
.to_insert_breakpoint
= ignore
;
864 exec_ops
.to_remove_breakpoint
= ignore
;
865 exec_ops
.to_create_inferior
= find_default_create_inferior
;
866 exec_ops
.to_stratum
= file_stratum
;
867 exec_ops
.to_has_memory
= exec_has_memory
;
868 exec_ops
.to_make_corefile_notes
= exec_make_note_section
;
869 exec_ops
.to_magic
= OPS_MAGIC
;
873 _initialize_exec (void)
875 struct cmd_list_element
*c
;
881 c
= add_cmd ("file", class_files
, file_command
, _("\
882 Use FILE as program to be debugged.\n\
883 It is read for its symbols, for getting the contents of pure memory,\n\
884 and it is the program executed when you use the `run' command.\n\
885 If FILE cannot be found as specified, your execution directory path\n\
886 ($PATH) is searched for a command of that name.\n\
887 No arg means to have no executable file and no symbols."), &cmdlist
);
888 set_cmd_completer (c
, filename_completer
);
891 c
= add_cmd ("exec-file", class_files
, exec_file_command
, _("\
892 Use FILE as program for getting contents of pure memory.\n\
893 If FILE cannot be found as specified, your execution directory path\n\
894 is searched for a command of that name.\n\
895 No arg means have no executable file."), &cmdlist
);
896 set_cmd_completer (c
, filename_completer
);
898 add_com ("section", class_files
, set_section_command
, _("\
899 Change the base address of section SECTION of the exec file to ADDR.\n\
900 This can be used if the exec file does not contain section addresses,\n\
901 (such as in the a.out format), or when the addresses specified in the\n\
902 file itself are wrong. Each section must be changed separately. The\n\
903 ``info files'' command lists all the sections and their addresses."));
905 add_setshow_boolean_cmd ("write", class_support
, &write_files
, _("\
906 Set writing into executable and core files."), _("\
907 Show writing into executable and core files."), NULL
,
910 &setlist
, &showlist
);
912 add_target (&exec_ops
);
916 exec_make_note_section (bfd
*obfd
, int *note_size
)
918 error (_("Can't create a corefile"));