1 /* Work with executable files, for GDB.
3 Copyright (C) 1988-2003, 2007-2012 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
26 #include "filenames.h"
29 #include "completer.h"
33 #include "arch-utils.h"
34 #include "gdbthread.h"
35 #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
;
103 gdb_bfd_unref (abfd
);
105 /* Removing target sections may close the exec_ops target.
106 Clear exec_bfd before doing so to prevent recursion. */
110 remove_target_sections (&exec_bfd
, abfd
);
114 /* This is the target_close implementation. Clears all target
115 sections and closes all executable bfds from all program spaces. */
118 exec_close_1 (int quitting
)
120 int need_symtab_cleanup
= 0;
121 struct vmap
*vp
, *nxt
;
125 for (nxt
= vmap
; nxt
!= NULL
;)
132 free_objfile (vp
->objfile
);
133 need_symtab_cleanup
= 1;
136 gdb_bfd_unref (vp
->bfd
);
144 struct program_space
*ss
;
145 struct cleanup
*old_chain
;
147 old_chain
= save_current_program_space ();
150 set_current_program_space (ss
);
152 /* Delete all target sections. */
154 (current_target_sections
,
155 -resize_section_table (current_target_sections
, 0));
160 do_cleanups (old_chain
);
165 exec_file_clear (int from_tty
)
167 /* Remove exec file. */
171 printf_unfiltered (_("No executable file now.\n"));
174 /* Set FILENAME as the new exec file.
176 This function is intended to be behave essentially the same
177 as exec_file_command, except that the latter will detect when
178 a target is being debugged, and will ask the user whether it
179 should be shut down first. (If the answer is "no", then the
180 new file is ignored.)
182 This file is used by exec_file_command, to do the work of opening
183 and processing the exec file after any prompting has happened.
185 And, it is used by child_attach, when the attach command was
186 given a pid but not a exec pathname, and the attach command could
187 figure out the pathname from the pid. (In this case, we shouldn't
188 ask the user whether the current target should be shut down --
189 we're supplying the exec pathname late for good reason.) */
192 exec_file_attach (char *filename
, int from_tty
)
194 /* Remove any previous exec file. */
197 /* Now open and digest the file the user requested, if any. */
202 printf_unfiltered (_("No executable file now.\n"));
204 set_gdbarch_from_file (NULL
);
208 struct cleanup
*cleanups
;
209 char *scratch_pathname
;
211 struct target_section
*sections
= NULL
, *sections_end
= NULL
;
214 scratch_chan
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, filename
,
215 write_files
? O_RDWR
| O_BINARY
: O_RDONLY
| O_BINARY
,
217 #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__)
218 if (scratch_chan
< 0)
220 char *exename
= alloca (strlen (filename
) + 5);
222 strcat (strcpy (exename
, filename
), ".exe");
223 scratch_chan
= openp (getenv ("PATH"), OPF_TRY_CWD_FIRST
, exename
,
224 write_files
? O_RDWR
| O_BINARY
: O_RDONLY
| O_BINARY
,
229 cleanups
= make_cleanup (xfree
, scratch_pathname
);
231 if (scratch_chan
< 0)
232 perror_with_name (filename
);
233 exec_bfd
= gdb_bfd_fopen (scratch_pathname
, gnutarget
,
234 write_files
? FOPEN_RUB
: FOPEN_RB
,
239 error (_("\"%s\": could not open as an executable file: %s"),
240 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
243 if (!bfd_check_format_matches (exec_bfd
, bfd_object
, &matching
))
245 /* Make sure to close exec_bfd, or else "run" might try to use
248 error (_("\"%s\": not in executable format: %s"),
250 gdb_bfd_errmsg (bfd_get_error (), matching
));
253 /* FIXME - This should only be run for RS6000, but the ifdef is a poor
254 way to accomplish. */
255 #ifdef DEPRECATED_IBM6000_TARGET
256 /* Setup initial vmap. */
258 map_vmap (exec_bfd
, 0);
261 /* Make sure to close exec_bfd, or else "run" might try to use
264 error (_("\"%s\": can't find the file sections: %s"),
265 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
267 #endif /* DEPRECATED_IBM6000_TARGET */
269 if (build_section_table (exec_bfd
, §ions
, §ions_end
))
271 /* Make sure to close exec_bfd, or else "run" might try to use
274 error (_("\"%s\": can't find the file sections: %s"),
275 scratch_pathname
, bfd_errmsg (bfd_get_error ()));
278 exec_bfd_mtime
= bfd_get_mtime (exec_bfd
);
282 set_gdbarch_from_file (exec_bfd
);
284 /* Add the executable's sections to the current address spaces'
285 list of sections. This possibly pushes the exec_ops
287 add_target_sections (&exec_bfd
, sections
, sections_end
);
290 /* Tell display code (if any) about the changed file name. */
291 if (deprecated_exec_file_display_hook
)
292 (*deprecated_exec_file_display_hook
) (filename
);
294 do_cleanups (cleanups
);
296 bfd_cache_close_all ();
297 observer_notify_executable_changed ();
300 /* Process the first arg in ARGS as the new exec file.
302 Note that we have to explicitly ignore additional args, since we can
303 be called from file_command(), which also calls symbol_file_command()
304 which can take multiple args.
306 If ARGS is NULL, we just want to close the exec file. */
309 exec_file_command (char *args
, int from_tty
)
314 if (from_tty
&& target_has_execution
315 && !query (_("A program is being debugged already.\n"
316 "Are you sure you want to change the file? ")))
317 error (_("File not changed."));
321 struct cleanup
*cleanups
;
323 /* Scan through the args and pick up the first non option arg
326 argv
= gdb_buildargv (args
);
327 cleanups
= make_cleanup_freeargv (argv
);
329 for (; (*argv
!= NULL
) && (**argv
== '-'); argv
++)
333 error (_("No executable file name was specified"));
335 filename
= tilde_expand (*argv
);
336 make_cleanup (xfree
, filename
);
337 exec_file_attach (filename
, from_tty
);
339 do_cleanups (cleanups
);
342 exec_file_attach (NULL
, from_tty
);
345 /* Set both the exec file and the symbol file, in one command.
346 What a novelty. Why did GDB go through four major releases before this
347 command was added? */
350 file_command (char *arg
, int from_tty
)
352 /* FIXME, if we lose on reading the symbol file, we should revert
353 the exec file, but that's rough. */
354 exec_file_command (arg
, from_tty
);
355 symbol_file_command (arg
, from_tty
);
356 if (deprecated_file_changed_hook
)
357 deprecated_file_changed_hook (arg
);
361 /* Locate all mappable sections of a BFD file.
362 table_pp_char is a char * to get it through bfd_map_over_sections;
363 we cast it back to its proper type. */
366 add_to_section_table (bfd
*abfd
, struct bfd_section
*asect
,
369 struct target_section
**table_pp
= (struct target_section
**) table_pp_char
;
372 /* Check the section flags, but do not discard zero-length sections, since
373 some symbols may still be attached to this section. For instance, we
374 encountered on sparc-solaris 2.10 a shared library with an empty .bss
375 section to which a symbol named "_end" was attached. The address
376 of this symbol still needs to be relocated. */
377 aflag
= bfd_get_section_flags (abfd
, asect
);
378 if (!(aflag
& SEC_ALLOC
))
381 (*table_pp
)->key
= NULL
;
382 (*table_pp
)->bfd
= abfd
;
383 (*table_pp
)->the_bfd_section
= asect
;
384 (*table_pp
)->addr
= bfd_section_vma (abfd
, asect
);
385 (*table_pp
)->endaddr
= (*table_pp
)->addr
+ bfd_section_size (abfd
, asect
);
390 resize_section_table (struct target_section_table
*table
, int num_added
)
392 struct target_section
*old_value
;
396 old_value
= table
->sections
;
397 old_count
= table
->sections_end
- table
->sections
;
399 new_count
= num_added
+ old_count
;
403 table
->sections
= xrealloc (table
->sections
,
404 sizeof (struct target_section
) * new_count
);
405 table
->sections_end
= table
->sections
+ new_count
;
409 xfree (table
->sections
);
410 table
->sections
= table
->sections_end
= NULL
;
416 /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
417 Returns 0 if OK, 1 on error. */
420 build_section_table (struct bfd
*some_bfd
, struct target_section
**start
,
421 struct target_section
**end
)
425 count
= bfd_count_sections (some_bfd
);
428 *start
= (struct target_section
*) xmalloc (count
* sizeof (**start
));
430 bfd_map_over_sections (some_bfd
, add_to_section_table
, (char *) end
);
431 if (*end
> *start
+ count
)
432 internal_error (__FILE__
, __LINE__
,
433 _("failed internal consistency check"));
434 /* We could realloc the table, but it probably loses for most files. */
438 /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the
439 current set of target sections. */
442 add_target_sections (void *key
,
443 struct target_section
*sections
,
444 struct target_section
*sections_end
)
447 struct target_section_table
*table
= current_target_sections
;
449 count
= sections_end
- sections
;
453 int space
= resize_section_table (table
, count
);
456 for (i
= 0; i
< count
; ++i
)
458 table
->sections
[space
+ i
] = sections
[i
];
459 table
->sections
[space
+ i
].key
= key
;
462 /* If these are the first file sections we can provide memory
463 from, push the file_stratum target. */
467 push_target (&exec_ops
);
472 /* Remove all target sections taken from ABFD. */
475 remove_target_sections (void *key
, bfd
*abfd
)
477 struct target_section
*src
, *dest
;
478 struct target_section_table
*table
= current_target_sections
;
480 dest
= table
->sections
;
481 for (src
= table
->sections
; src
< table
->sections_end
; src
++)
482 if (src
->key
!= key
|| src
->bfd
!= abfd
)
484 /* Keep this section. */
490 /* If we've dropped any sections, resize the section table. */
495 old_count
= resize_section_table (table
, dest
- src
);
497 /* If we don't have any more sections to read memory from,
498 remove the file_stratum target from the stack. */
499 if (old_count
+ (dest
- src
) == 0)
501 struct program_space
*pspace
;
504 if (pspace
->target_sections
.sections
505 != pspace
->target_sections
.sections_end
)
508 unpush_target (&exec_ops
);
515 bfdsec_to_vmap (struct bfd
*abfd
, struct bfd_section
*sect
, void *arg3
)
517 struct vmap_and_bfd
*vmap_bfd
= (struct vmap_and_bfd
*) arg3
;
520 vp
= vmap_bfd
->pvmap
;
522 if ((bfd_get_section_flags (abfd
, sect
) & SEC_LOAD
) == 0)
525 if (strcmp (bfd_section_name (abfd
, sect
), ".text") == 0)
527 vp
->tstart
= bfd_section_vma (abfd
, sect
);
528 vp
->tend
= vp
->tstart
+ bfd_section_size (abfd
, sect
);
529 vp
->tvma
= bfd_section_vma (abfd
, sect
);
530 vp
->toffs
= sect
->filepos
;
532 else if (strcmp (bfd_section_name (abfd
, sect
), ".data") == 0)
534 vp
->dstart
= bfd_section_vma (abfd
, sect
);
535 vp
->dend
= vp
->dstart
+ bfd_section_size (abfd
, sect
);
536 vp
->dvma
= bfd_section_vma (abfd
, sect
);
538 /* Silently ignore other types of sections. (FIXME?) */
541 /* Make a vmap for ABFD which might be a member of the archive ARCH.
542 Return the new vmap. */
545 map_vmap (bfd
*abfd
, bfd
*arch
)
547 struct vmap_and_bfd vmap_bfd
;
548 struct vmap
*vp
, **vpp
;
550 vp
= (struct vmap
*) xmalloc (sizeof (*vp
));
551 memset ((char *) vp
, '\0', sizeof (*vp
));
555 vp
->name
= bfd_get_filename (arch
? arch
: abfd
);
556 vp
->member
= arch
? bfd_get_filename (abfd
) : "";
558 vmap_bfd
.pbfd
= arch
;
560 bfd_map_over_sections (abfd
, bfdsec_to_vmap
, &vmap_bfd
);
562 /* Find the end of the list and append. */
563 for (vpp
= &vmap
; *vpp
; vpp
= &(*vpp
)->nxt
)
572 section_table_available_memory (VEC(mem_range_s
) *memory
,
573 CORE_ADDR memaddr
, ULONGEST len
,
574 struct target_section
*sections
,
575 struct target_section
*sections_end
)
577 struct target_section
*p
;
579 for (p
= sections
; p
< sections_end
; p
++)
581 if ((bfd_get_section_flags (p
->bfd
, p
->the_bfd_section
)
582 & SEC_READONLY
) == 0)
585 /* Copy the meta-data, adjusted. */
586 if (mem_ranges_overlap (p
->addr
, p
->endaddr
- p
->addr
, memaddr
, len
))
588 ULONGEST lo1
, hi1
, lo2
, hi2
;
597 r
= VEC_safe_push (mem_range_s
, memory
, NULL
);
599 r
->start
= max (lo1
, lo2
);
600 r
->length
= min (hi1
, hi2
) - r
->start
;
608 section_table_xfer_memory_partial (gdb_byte
*readbuf
, const gdb_byte
*writebuf
,
609 ULONGEST offset
, LONGEST len
,
610 struct target_section
*sections
,
611 struct target_section
*sections_end
,
612 const char *section_name
)
615 struct target_section
*p
;
616 ULONGEST memaddr
= offset
;
617 ULONGEST memend
= memaddr
+ len
;
620 internal_error (__FILE__
, __LINE__
,
621 _("failed internal consistency check"));
623 for (p
= sections
; p
< sections_end
; p
++)
625 if (section_name
&& strcmp (section_name
, p
->the_bfd_section
->name
) != 0)
626 continue; /* not the section we need. */
627 if (memaddr
>= p
->addr
)
629 if (memend
<= p
->endaddr
)
631 /* Entire transfer is within this section. */
633 res
= bfd_set_section_contents (p
->bfd
, p
->the_bfd_section
,
634 writebuf
, memaddr
- p
->addr
,
637 res
= bfd_get_section_contents (p
->bfd
, p
->the_bfd_section
,
638 readbuf
, memaddr
- p
->addr
,
640 return (res
!= 0) ? len
: 0;
642 else if (memaddr
>= p
->endaddr
)
644 /* This section ends before the transfer starts. */
649 /* This section overlaps the transfer. Just do half. */
650 len
= p
->endaddr
- memaddr
;
652 res
= bfd_set_section_contents (p
->bfd
, p
->the_bfd_section
,
653 writebuf
, memaddr
- p
->addr
,
656 res
= bfd_get_section_contents (p
->bfd
, p
->the_bfd_section
,
657 readbuf
, memaddr
- p
->addr
,
659 return (res
!= 0) ? len
: 0;
664 return 0; /* We can't help. */
667 static struct target_section_table
*
668 exec_get_section_table (struct target_ops
*ops
)
670 return current_target_sections
;
674 exec_xfer_partial (struct target_ops
*ops
, enum target_object object
,
675 const char *annex
, gdb_byte
*readbuf
,
676 const gdb_byte
*writebuf
,
677 ULONGEST offset
, LONGEST len
)
679 struct target_section_table
*table
= target_get_section_table (ops
);
681 if (object
== TARGET_OBJECT_MEMORY
)
682 return section_table_xfer_memory_partial (readbuf
, writebuf
,
693 print_section_info (struct target_section_table
*t
, bfd
*abfd
)
695 struct gdbarch
*gdbarch
= gdbarch_from_bfd (abfd
);
696 struct target_section
*p
;
697 /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */
698 int wid
= gdbarch_addr_bit (gdbarch
) <= 32 ? 8 : 16;
700 printf_filtered ("\t`%s', ", bfd_get_filename (abfd
));
702 printf_filtered (_("file type %s.\n"), bfd_get_target (abfd
));
703 if (abfd
== exec_bfd
)
705 /* gcc-3.4 does not like the initialization in
706 <p == t->sections_end>. */
707 bfd_vma displacement
= 0;
710 for (p
= t
->sections
; p
< t
->sections_end
; p
++)
712 asection
*asect
= p
->the_bfd_section
;
714 if ((bfd_get_section_flags (abfd
, asect
) & (SEC_ALLOC
| SEC_LOAD
))
715 != (SEC_ALLOC
| SEC_LOAD
))
718 if (bfd_get_section_vma (abfd
, asect
) <= abfd
->start_address
719 && abfd
->start_address
< (bfd_get_section_vma (abfd
, asect
)
720 + bfd_get_section_size (asect
)))
722 displacement
= p
->addr
- bfd_get_section_vma (abfd
, asect
);
726 if (p
== t
->sections_end
)
727 warning (_("Cannot find section for the entry point of %s."),
728 bfd_get_filename (abfd
));
730 entry_point
= gdbarch_addr_bits_remove (gdbarch
,
731 bfd_get_start_address (abfd
)
733 printf_filtered (_("\tEntry point: %s\n"),
734 paddress (gdbarch
, entry_point
));
736 for (p
= t
->sections
; p
< t
->sections_end
; p
++)
738 printf_filtered ("\t%s", hex_string_custom (p
->addr
, wid
));
739 printf_filtered (" - %s", hex_string_custom (p
->endaddr
, wid
));
741 /* FIXME: A format of "08l" is not wide enough for file offsets
742 larger than 4GB. OTOH, making it "016l" isn't desirable either
743 since most output will then be much wider than necessary. It
744 may make sense to test the size of the file and choose the
745 format string accordingly. */
746 /* FIXME: i18n: Need to rewrite this sentence. */
748 printf_filtered (" @ %s",
749 hex_string_custom (p
->the_bfd_section
->filepos
, 8));
750 printf_filtered (" is %s", bfd_section_name (p
->bfd
,
751 p
->the_bfd_section
));
753 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
754 printf_filtered ("\n");
759 exec_files_info (struct target_ops
*t
)
762 print_section_info (current_target_sections
, exec_bfd
);
764 puts_filtered (_("\t<no file loaded>\n"));
768 int addr_size
= gdbarch_addr_bit (target_gdbarch
) / 8;
771 printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap
->name
);
772 printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n",
773 addr_size
* 2, "tstart",
774 addr_size
* 2, "tend",
775 addr_size
* 2, "dstart",
776 addr_size
* 2, "dend",
780 for (vp
= vmap
; vp
; vp
= vp
->nxt
)
781 printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n",
782 phex (vp
->tstart
, addr_size
),
783 phex (vp
->tend
, addr_size
),
784 phex (vp
->dstart
, addr_size
),
785 phex (vp
->dend
, addr_size
),
787 *vp
->member
? "(" : "", vp
->member
,
788 *vp
->member
? ")" : "");
793 set_section_command (char *args
, int from_tty
)
795 struct target_section
*p
;
798 unsigned long secaddr
;
801 struct target_section_table
*table
;
804 error (_("Must specify section name and its virtual address"));
806 /* Parse out section name. */
807 for (secname
= args
; !isspace (*args
); args
++);
808 seclen
= args
- secname
;
810 /* Parse out new virtual address. */
811 secaddr
= parse_and_eval_address (args
);
813 table
= current_target_sections
;
814 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
816 if (!strncmp (secname
, bfd_section_name (p
->bfd
,
817 p
->the_bfd_section
), seclen
)
818 && bfd_section_name (p
->bfd
, p
->the_bfd_section
)[seclen
] == '\0')
820 offset
= secaddr
- p
->addr
;
822 p
->endaddr
+= offset
;
824 exec_files_info (&exec_ops
);
828 if (seclen
>= sizeof (secprint
))
829 seclen
= sizeof (secprint
) - 1;
830 strncpy (secprint
, secname
, seclen
);
831 secprint
[seclen
] = '\0';
832 error (_("Section %s not found"), secprint
);
835 /* If we can find a section in FILENAME with BFD index INDEX, adjust
839 exec_set_section_address (const char *filename
, int index
, CORE_ADDR address
)
841 struct target_section
*p
;
842 struct target_section_table
*table
;
844 table
= current_target_sections
;
845 for (p
= table
->sections
; p
< table
->sections_end
; p
++)
847 if (filename_cmp (filename
, p
->bfd
->filename
) == 0
848 && index
== p
->the_bfd_section
->index
)
850 p
->endaddr
+= address
- p
->addr
;
856 /* If mourn is being called in all the right places, this could be say
857 `gdb internal error' (since generic_mourn calls
858 breakpoint_init_inferior). */
861 ignore (struct gdbarch
*gdbarch
, struct bp_target_info
*bp_tgt
)
867 exec_has_memory (struct target_ops
*ops
)
869 /* We can provide memory if we have any file/target sections to read
871 return (current_target_sections
->sections
872 != current_target_sections
->sections_end
);
875 /* Find mapped memory. */
878 exec_set_find_memory_regions (int (*func
) (find_memory_region_ftype
, void *))
880 exec_ops
.to_find_memory_regions
= func
;
883 static char *exec_make_note_section (bfd
*, int *);
885 /* Fill in the exec file target vector. Very few entries need to be
891 exec_ops
.to_shortname
= "exec";
892 exec_ops
.to_longname
= "Local exec file";
893 exec_ops
.to_doc
= "Use an executable file as a target.\n\
894 Specify the filename of the executable file.";
895 exec_ops
.to_open
= exec_open
;
896 exec_ops
.to_close
= exec_close_1
;
897 exec_ops
.to_attach
= find_default_attach
;
898 exec_ops
.to_xfer_partial
= exec_xfer_partial
;
899 exec_ops
.to_get_section_table
= exec_get_section_table
;
900 exec_ops
.to_files_info
= exec_files_info
;
901 exec_ops
.to_insert_breakpoint
= ignore
;
902 exec_ops
.to_remove_breakpoint
= ignore
;
903 exec_ops
.to_create_inferior
= find_default_create_inferior
;
904 exec_ops
.to_stratum
= file_stratum
;
905 exec_ops
.to_has_memory
= exec_has_memory
;
906 exec_ops
.to_make_corefile_notes
= exec_make_note_section
;
907 exec_ops
.to_magic
= OPS_MAGIC
;
911 _initialize_exec (void)
913 struct cmd_list_element
*c
;
919 c
= add_cmd ("file", class_files
, file_command
, _("\
920 Use FILE as program to be debugged.\n\
921 It is read for its symbols, for getting the contents of pure memory,\n\
922 and it is the program executed when you use the `run' command.\n\
923 If FILE cannot be found as specified, your execution directory path\n\
924 ($PATH) is searched for a command of that name.\n\
925 No arg means to have no executable file and no symbols."), &cmdlist
);
926 set_cmd_completer (c
, filename_completer
);
929 c
= add_cmd ("exec-file", class_files
, exec_file_command
, _("\
930 Use FILE as program for getting contents of pure memory.\n\
931 If FILE cannot be found as specified, your execution directory path\n\
932 is searched for a command of that name.\n\
933 No arg means have no executable file."), &cmdlist
);
934 set_cmd_completer (c
, filename_completer
);
936 add_com ("section", class_files
, set_section_command
, _("\
937 Change the base address of section SECTION of the exec file to ADDR.\n\
938 This can be used if the exec file does not contain section addresses,\n\
939 (such as in the a.out format), or when the addresses specified in the\n\
940 file itself are wrong. Each section must be changed separately. The\n\
941 ``info files'' command lists all the sections and their addresses."));
943 add_setshow_boolean_cmd ("write", class_support
, &write_files
, _("\
944 Set writing into executable and core files."), _("\
945 Show writing into executable and core files."), NULL
,
948 &setlist
, &showlist
);
950 add_target (&exec_ops
);
954 exec_make_note_section (bfd
*obfd
, int *note_size
)
956 error (_("Can't create a corefile"));