1 /* Work with executable files, for GDB.
3 Copyright (C) 1988-2017 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"
40 #include "readline/readline.h"
48 void (*deprecated_file_changed_hook) (char *);
50 /* Prototypes for local functions */
52 static void file_command (char *, int);
54 static void set_section_command (char *, int);
56 static void exec_files_info (struct target_ops *);
58 static void init_exec_ops (void);
60 void _initialize_exec (void);
62 /* The target vector for executable files. */
64 static struct target_ops exec_ops;
66 /* Whether to open exec and core files read-only or read-write. */
70 show_write_files (struct ui_file *file, int from_tty,
71 struct cmd_list_element *c, const char *value)
73 fprintf_filtered (file, _("Writing into executable and core files is %s.\n"),
79 exec_open (const char *args, int from_tty)
81 target_preopen (from_tty);
82 exec_file_attach (args, from_tty);
85 /* Close and clear exec_bfd. If we end up with no target sections to
86 read memory from, this unpushes the exec_ops target. */
97 /* Removing target sections may close the exec_ops target.
98 Clear exec_bfd before doing so to prevent recursion. */
102 remove_target_sections (&exec_bfd);
104 xfree (exec_filename);
105 exec_filename = NULL;
109 /* This is the target_close implementation. Clears all target
110 sections and closes all executable bfds from all program spaces. */
113 exec_close_1 (struct target_ops *self)
115 struct program_space *ss;
116 scoped_restore_current_program_space restore_pspace;
120 set_current_program_space (ss);
121 clear_section_table (current_target_sections);
127 exec_file_clear (int from_tty)
129 /* Remove exec file. */
133 printf_unfiltered (_("No executable file now.\n"));
139 try_open_exec_file (const char *exec_file_host, struct inferior *inf,
140 symfile_add_flags add_flags)
142 struct cleanup *old_chain;
143 struct gdb_exception prev_err = exception_none;
145 old_chain = make_cleanup (free_current_contents, &prev_err.message);
147 /* exec_file_attach and symbol_file_add_main may throw an error if the file
148 cannot be opened either locally or remotely.
150 This happens for example, when the file is first found in the local
151 sysroot (above), and then disappears (a TOCTOU race), or when it doesn't
152 exist in the target filesystem, or when the file does exist, but
155 Even without a symbol file, the remote-based debugging session should
156 continue normally instead of ending abruptly. Hence we catch thrown
157 errors/exceptions in the following code. */
160 /* We must do this step even if exec_file_host is NULL, so that
161 exec_file_attach will clear state. */
162 exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE);
164 CATCH (err, RETURN_MASK_ERROR)
166 if (err.message != NULL)
167 warning ("%s", err.message);
171 /* Save message so it doesn't get trashed by the catch below. */
172 if (err.message != NULL)
173 prev_err.message = xstrdup (err.message);
177 if (exec_file_host != NULL)
181 symbol_file_add_main (exec_file_host, add_flags);
183 CATCH (err, RETURN_MASK_ERROR)
185 if (!exception_print_same (prev_err, err))
186 warning ("%s", err.message);
191 do_cleanups (old_chain);
197 exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty)
199 char *exec_file_target, *exec_file_host;
200 struct cleanup *old_chain;
201 symfile_add_flags add_flags = 0;
203 /* Do nothing if we already have an executable filename. */
204 if (get_exec_file (0) != NULL)
207 /* Try to determine a filename from the process itself. */
208 exec_file_target = target_pid_to_exec_file (pid);
209 if (exec_file_target == NULL)
211 warning (_("No executable has been specified and target does not "
213 "determining executable automatically. "
214 "Try using the \"file\" command."));
218 exec_file_host = exec_file_find (exec_file_target, NULL);
219 old_chain = make_cleanup (xfree, exec_file_host);
222 add_flags |= SYMFILE_DEFER_BP_RESET;
225 add_flags |= SYMFILE_VERBOSE;
227 /* Attempt to open the exec file. */
228 try_open_exec_file (exec_file_host, current_inferior (), add_flags);
229 do_cleanups (old_chain);
232 /* Set FILENAME as the new exec file.
234 This function is intended to be behave essentially the same
235 as exec_file_command, except that the latter will detect when
236 a target is being debugged, and will ask the user whether it
237 should be shut down first. (If the answer is "no", then the
238 new file is ignored.)
240 This file is used by exec_file_command, to do the work of opening
241 and processing the exec file after any prompting has happened.
243 And, it is used by child_attach, when the attach command was
244 given a pid but not a exec pathname, and the attach command could
245 figure out the pathname from the pid. (In this case, we shouldn't
246 ask the user whether the current target should be shut down --
247 we're supplying the exec pathname late for good reason.) */
250 exec_file_attach (const char *filename, int from_tty)
252 /* First, acquire a reference to the current exec_bfd. We release
253 this at the end of the function; but acquiring it now lets the
254 BFD cache return it if this call refers to the same file. */
255 gdb_bfd_ref (exec_bfd);
256 gdb_bfd_ref_ptr exec_bfd_holder (exec_bfd);
258 /* Remove any previous exec file. */
261 /* Now open and digest the file the user requested, if any. */
266 printf_unfiltered (_("No executable file now.\n"));
268 set_gdbarch_from_file (NULL);
272 int load_via_target = 0;
273 const char *scratch_pathname, *canonical_pathname;
275 struct target_section *sections = NULL, *sections_end = NULL;
278 if (is_target_filename (filename))
280 if (target_filesystem_is_local ())
281 filename += strlen (TARGET_SYSROOT_PREFIX);
286 gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage;
289 /* gdb_bfd_fopen does not support "target:" filenames. */
291 warning (_("writing into executable files is "
292 "not supported for %s sysroots"),
293 TARGET_SYSROOT_PREFIX);
295 scratch_pathname = filename;
297 canonical_pathname = scratch_pathname;
303 scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST,
304 filename, write_files ?
305 O_RDWR | O_BINARY : O_RDONLY | O_BINARY,
307 #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__)
308 if (scratch_chan < 0)
310 char *exename = (char *) alloca (strlen (filename) + 5);
312 strcat (strcpy (exename, filename), ".exe");
313 scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST,
314 exename, write_files ?
316 : O_RDONLY | O_BINARY,
320 if (scratch_chan < 0)
321 perror_with_name (filename);
323 scratch_storage.reset (temp_pathname);
324 scratch_pathname = temp_pathname;
326 /* gdb_bfd_open (and its variants) prefers canonicalized
327 pathname for better BFD caching. */
328 canonical_storage = gdb_realpath (scratch_pathname);
329 canonical_pathname = canonical_storage.get ();
332 gdb_bfd_ref_ptr temp;
333 if (write_files && !load_via_target)
334 temp = gdb_bfd_fopen (canonical_pathname, gnutarget,
335 FOPEN_RUB, scratch_chan);
337 temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan);
338 exec_bfd = temp.release ();
342 error (_("\"%s\": could not open as an executable file: %s."),
343 scratch_pathname, bfd_errmsg (bfd_get_error ()));
346 /* gdb_realpath_keepfile resolves symlinks on the local
347 filesystem and so cannot be used for "target:" files. */
348 gdb_assert (exec_filename == NULL);
350 exec_filename = xstrdup (bfd_get_filename (exec_bfd));
352 exec_filename = gdb_realpath_keepfile (scratch_pathname).release ();
354 if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching))
356 /* Make sure to close exec_bfd, or else "run" might try to use
359 error (_("\"%s\": not in executable format: %s"),
361 gdb_bfd_errmsg (bfd_get_error (), matching));
364 if (build_section_table (exec_bfd, §ions, §ions_end))
366 /* Make sure to close exec_bfd, or else "run" might try to use
369 error (_("\"%s\": can't find the file sections: %s"),
370 scratch_pathname, bfd_errmsg (bfd_get_error ()));
373 exec_bfd_mtime = bfd_get_mtime (exec_bfd);
377 set_gdbarch_from_file (exec_bfd);
379 /* Add the executable's sections to the current address spaces'
380 list of sections. This possibly pushes the exec_ops
382 add_target_sections (&exec_bfd, sections, sections_end);
385 /* Tell display code (if any) about the changed file name. */
386 if (deprecated_exec_file_display_hook)
387 (*deprecated_exec_file_display_hook) (filename);
390 bfd_cache_close_all ();
391 observer_notify_executable_changed ();
394 /* Process the first arg in ARGS as the new exec file.
396 Note that we have to explicitly ignore additional args, since we can
397 be called from file_command(), which also calls symbol_file_command()
398 which can take multiple args.
400 If ARGS is NULL, we just want to close the exec file. */
403 exec_file_command (char *args, int from_tty)
407 if (from_tty && target_has_execution
408 && !query (_("A program is being debugged already.\n"
409 "Are you sure you want to change the file? ")))
410 error (_("File not changed."));
414 /* Scan through the args and pick up the first non option arg
417 gdb_argv built_argv (args);
418 char **argv = built_argv.get ();
420 for (; (*argv != NULL) && (**argv == '-'); argv++)
424 error (_("No executable file name was specified"));
426 gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv));
427 exec_file_attach (filename.get (), from_tty);
430 exec_file_attach (NULL, from_tty);
433 /* Set both the exec file and the symbol file, in one command.
434 What a novelty. Why did GDB go through four major releases before this
435 command was added? */
438 file_command (char *arg, int from_tty)
440 /* FIXME, if we lose on reading the symbol file, we should revert
441 the exec file, but that's rough. */
442 exec_file_command (arg, from_tty);
443 symbol_file_command (arg, from_tty);
444 if (deprecated_file_changed_hook)
445 deprecated_file_changed_hook (arg);
449 /* Locate all mappable sections of a BFD file.
450 table_pp_char is a char * to get it through bfd_map_over_sections;
451 we cast it back to its proper type. */
454 add_to_section_table (bfd *abfd, struct bfd_section *asect,
457 struct target_section **table_pp = (struct target_section **) table_pp_char;
460 gdb_assert (abfd == asect->owner);
462 /* Check the section flags, but do not discard zero-length sections, since
463 some symbols may still be attached to this section. For instance, we
464 encountered on sparc-solaris 2.10 a shared library with an empty .bss
465 section to which a symbol named "_end" was attached. The address
466 of this symbol still needs to be relocated. */
467 aflag = bfd_get_section_flags (abfd, asect);
468 if (!(aflag & SEC_ALLOC))
471 (*table_pp)->owner = NULL;
472 (*table_pp)->the_bfd_section = asect;
473 (*table_pp)->addr = bfd_section_vma (abfd, asect);
474 (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect);
481 clear_section_table (struct target_section_table *table)
483 xfree (table->sections);
484 table->sections = table->sections_end = NULL;
487 /* Resize section table TABLE by ADJUSTMENT.
488 ADJUSTMENT may be negative, in which case the caller must have already
489 removed the sections being deleted.
490 Returns the old size. */
493 resize_section_table (struct target_section_table *table, int adjustment)
498 old_count = table->sections_end - table->sections;
500 new_count = adjustment + old_count;
504 table->sections = XRESIZEVEC (struct target_section, table->sections,
506 table->sections_end = table->sections + new_count;
509 clear_section_table (table);
514 /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR.
515 Returns 0 if OK, 1 on error. */
518 build_section_table (struct bfd *some_bfd, struct target_section **start,
519 struct target_section **end)
523 count = bfd_count_sections (some_bfd);
526 *start = XNEWVEC (struct target_section, count);
528 bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end);
529 if (*end > *start + count)
530 internal_error (__FILE__, __LINE__,
531 _("failed internal consistency check"));
532 /* We could realloc the table, but it probably loses for most files. */
536 /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the
537 current set of target sections. */
540 add_target_sections (void *owner,
541 struct target_section *sections,
542 struct target_section *sections_end)
545 struct target_section_table *table = current_target_sections;
547 count = sections_end - sections;
551 int space = resize_section_table (table, count);
554 for (i = 0; i < count; ++i)
556 table->sections[space + i] = sections[i];
557 table->sections[space + i].owner = owner;
560 /* If these are the first file sections we can provide memory
561 from, push the file_stratum target. */
562 if (!target_is_pushed (&exec_ops))
563 push_target (&exec_ops);
567 /* Add the sections of OBJFILE to the current set of target sections. */
570 add_target_sections_of_objfile (struct objfile *objfile)
572 struct target_section_table *table = current_target_sections;
573 struct obj_section *osect;
576 struct target_section *ts;
581 /* Compute the number of sections to add. */
582 ALL_OBJFILE_OSECTIONS (objfile, osect)
584 if (bfd_get_section_size (osect->the_bfd_section) == 0)
592 space = resize_section_table (table, count);
594 ts = table->sections + space;
596 ALL_OBJFILE_OSECTIONS (objfile, osect)
598 if (bfd_get_section_size (osect->the_bfd_section) == 0)
601 gdb_assert (ts < table->sections + space + count);
603 ts->addr = obj_section_addr (osect);
604 ts->endaddr = obj_section_endaddr (osect);
605 ts->the_bfd_section = osect->the_bfd_section;
606 ts->owner = (void *) objfile;
612 /* Remove all target sections owned by OWNER.
613 OWNER must be the same value passed to add_target_sections. */
616 remove_target_sections (void *owner)
618 struct target_section *src, *dest;
619 struct target_section_table *table = current_target_sections;
621 gdb_assert (owner != NULL);
623 dest = table->sections;
624 for (src = table->sections; src < table->sections_end; src++)
625 if (src->owner != owner)
627 /* Keep this section. */
633 /* If we've dropped any sections, resize the section table. */
638 old_count = resize_section_table (table, dest - src);
640 /* If we don't have any more sections to read memory from,
641 remove the file_stratum target from the stack. */
642 if (old_count + (dest - src) == 0)
644 struct program_space *pspace;
647 if (pspace->target_sections.sections
648 != pspace->target_sections.sections_end)
651 unpush_target (&exec_ops);
658 enum target_xfer_status
659 exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset,
660 ULONGEST len, ULONGEST *xfered_len)
662 /* It's unduly pedantic to refuse to look at the executable for
663 read-only pieces; so do the equivalent of readonly regions aka
665 if (exec_bfd != NULL)
671 for (s = exec_bfd->sections; s; s = s->next)
673 if ((s->flags & SEC_LOAD) == 0
674 || (s->flags & SEC_READONLY) == 0)
678 size = bfd_get_section_size (s);
679 if (vma <= offset && offset < (vma + size))
683 amt = (vma + size) - offset;
687 amt = bfd_get_section_contents (exec_bfd, s,
688 readbuf, offset - vma, amt);
691 return TARGET_XFER_EOF;
695 return TARGET_XFER_OK;
701 /* Indicate failure to find the requested memory block. */
702 return TARGET_XFER_E_IO;
705 /* Appends all read-only memory ranges found in the target section
706 table defined by SECTIONS and SECTIONS_END, starting at (and
707 intersected with) MEMADDR for LEN bytes. Returns the augmented
710 static VEC(mem_range_s) *
711 section_table_available_memory (VEC(mem_range_s) *memory,
712 CORE_ADDR memaddr, ULONGEST len,
713 struct target_section *sections,
714 struct target_section *sections_end)
716 struct target_section *p;
718 for (p = sections; p < sections_end; p++)
720 if ((bfd_get_section_flags (p->the_bfd_section->owner,
722 & SEC_READONLY) == 0)
725 /* Copy the meta-data, adjusted. */
726 if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len))
728 ULONGEST lo1, hi1, lo2, hi2;
737 r = VEC_safe_push (mem_range_s, memory, NULL);
739 r->start = std::max (lo1, lo2);
740 r->length = std::min (hi1, hi2) - r->start;
747 enum target_xfer_status
748 section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset,
749 ULONGEST len, ULONGEST *xfered_len)
751 VEC(mem_range_s) *available_memory = NULL;
752 struct target_section_table *table;
753 struct cleanup *old_chain;
757 table = target_get_section_table (&exec_ops);
758 available_memory = section_table_available_memory (available_memory,
761 table->sections_end);
763 old_chain = make_cleanup (VEC_cleanup(mem_range_s),
766 normalize_mem_ranges (available_memory);
769 VEC_iterate (mem_range_s, available_memory, i, r);
772 if (mem_ranges_overlap (r->start, r->length, offset, len))
775 enum target_xfer_status status;
777 /* Get the intersection window. */
778 end = std::min<CORE_ADDR> (offset + len, r->start + r->length);
780 gdb_assert (end - offset <= len);
782 if (offset >= r->start)
783 status = exec_read_partial_read_only (readbuf, offset,
788 *xfered_len = r->start - offset;
789 status = TARGET_XFER_UNAVAILABLE;
791 do_cleanups (old_chain);
795 do_cleanups (old_chain);
798 return TARGET_XFER_UNAVAILABLE;
801 enum target_xfer_status
802 section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf,
803 ULONGEST offset, ULONGEST len,
804 ULONGEST *xfered_len,
805 struct target_section *sections,
806 struct target_section *sections_end,
807 const char *section_name)
810 struct target_section *p;
811 ULONGEST memaddr = offset;
812 ULONGEST memend = memaddr + len;
815 internal_error (__FILE__, __LINE__,
816 _("failed internal consistency check"));
818 for (p = sections; p < sections_end; p++)
820 struct bfd_section *asect = p->the_bfd_section;
821 bfd *abfd = asect->owner;
823 if (section_name && strcmp (section_name, asect->name) != 0)
824 continue; /* not the section we need. */
825 if (memaddr >= p->addr)
827 if (memend <= p->endaddr)
829 /* Entire transfer is within this section. */
831 res = bfd_set_section_contents (abfd, asect,
832 writebuf, memaddr - p->addr,
835 res = bfd_get_section_contents (abfd, asect,
836 readbuf, memaddr - p->addr,
842 return TARGET_XFER_OK;
845 return TARGET_XFER_EOF;
847 else if (memaddr >= p->endaddr)
849 /* This section ends before the transfer starts. */
854 /* This section overlaps the transfer. Just do half. */
855 len = p->endaddr - memaddr;
857 res = bfd_set_section_contents (abfd, asect,
858 writebuf, memaddr - p->addr,
861 res = bfd_get_section_contents (abfd, asect,
862 readbuf, memaddr - p->addr,
867 return TARGET_XFER_OK;
870 return TARGET_XFER_EOF;
875 return TARGET_XFER_EOF; /* We can't help. */
878 static struct target_section_table *
879 exec_get_section_table (struct target_ops *ops)
881 return current_target_sections;
884 static enum target_xfer_status
885 exec_xfer_partial (struct target_ops *ops, enum target_object object,
886 const char *annex, gdb_byte *readbuf,
887 const gdb_byte *writebuf,
888 ULONGEST offset, ULONGEST len, ULONGEST *xfered_len)
890 struct target_section_table *table = target_get_section_table (ops);
892 if (object == TARGET_OBJECT_MEMORY)
893 return section_table_xfer_memory_partial (readbuf, writebuf,
894 offset, len, xfered_len,
899 return TARGET_XFER_E_IO;
904 print_section_info (struct target_section_table *t, bfd *abfd)
906 struct gdbarch *gdbarch = gdbarch_from_bfd (abfd);
907 struct target_section *p;
908 /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */
909 int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16;
911 printf_filtered ("\t`%s', ", bfd_get_filename (abfd));
913 printf_filtered (_("file type %s.\n"), bfd_get_target (abfd));
914 if (abfd == exec_bfd)
916 /* gcc-3.4 does not like the initialization in
917 <p == t->sections_end>. */
918 bfd_vma displacement = 0;
921 for (p = t->sections; p < t->sections_end; p++)
923 struct bfd_section *psect = p->the_bfd_section;
924 bfd *pbfd = psect->owner;
926 if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD))
927 != (SEC_ALLOC | SEC_LOAD))
930 if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address
931 && abfd->start_address < (bfd_get_section_vma (pbfd, psect)
932 + bfd_get_section_size (psect)))
934 displacement = p->addr - bfd_get_section_vma (pbfd, psect);
938 if (p == t->sections_end)
939 warning (_("Cannot find section for the entry point of %s."),
940 bfd_get_filename (abfd));
942 entry_point = gdbarch_addr_bits_remove (gdbarch,
943 bfd_get_start_address (abfd)
945 printf_filtered (_("\tEntry point: %s\n"),
946 paddress (gdbarch, entry_point));
948 for (p = t->sections; p < t->sections_end; p++)
950 struct bfd_section *psect = p->the_bfd_section;
951 bfd *pbfd = psect->owner;
953 printf_filtered ("\t%s", hex_string_custom (p->addr, wid));
954 printf_filtered (" - %s", hex_string_custom (p->endaddr, wid));
956 /* FIXME: A format of "08l" is not wide enough for file offsets
957 larger than 4GB. OTOH, making it "016l" isn't desirable either
958 since most output will then be much wider than necessary. It
959 may make sense to test the size of the file and choose the
960 format string accordingly. */
961 /* FIXME: i18n: Need to rewrite this sentence. */
963 printf_filtered (" @ %s",
964 hex_string_custom (psect->filepos, 8));
965 printf_filtered (" is %s", bfd_section_name (pbfd, psect));
967 printf_filtered (" in %s", bfd_get_filename (pbfd));
968 printf_filtered ("\n");
973 exec_files_info (struct target_ops *t)
976 print_section_info (current_target_sections, exec_bfd);
978 puts_filtered (_("\t<no file loaded>\n"));
982 set_section_command (char *args, int from_tty)
984 struct target_section *p;
987 unsigned long secaddr;
990 struct target_section_table *table;
993 error (_("Must specify section name and its virtual address"));
995 /* Parse out section name. */
996 for (secname = args; !isspace (*args); args++);
997 seclen = args - secname;
999 /* Parse out new virtual address. */
1000 secaddr = parse_and_eval_address (args);
1002 table = current_target_sections;
1003 for (p = table->sections; p < table->sections_end; p++)
1005 if (!strncmp (secname, bfd_section_name (p->bfd,
1006 p->the_bfd_section), seclen)
1007 && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0')
1009 offset = secaddr - p->addr;
1011 p->endaddr += offset;
1013 exec_files_info (&exec_ops);
1017 if (seclen >= sizeof (secprint))
1018 seclen = sizeof (secprint) - 1;
1019 strncpy (secprint, secname, seclen);
1020 secprint[seclen] = '\0';
1021 error (_("Section %s not found"), secprint);
1024 /* If we can find a section in FILENAME with BFD index INDEX, adjust
1028 exec_set_section_address (const char *filename, int index, CORE_ADDR address)
1030 struct target_section *p;
1031 struct target_section_table *table;
1033 table = current_target_sections;
1034 for (p = table->sections; p < table->sections_end; p++)
1036 if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0
1037 && index == p->the_bfd_section->index)
1039 p->endaddr += address - p->addr;
1045 /* If mourn is being called in all the right places, this could be say
1046 `gdb internal error' (since generic_mourn calls
1047 breakpoint_init_inferior). */
1050 ignore (struct target_ops *ops, struct gdbarch *gdbarch,
1051 struct bp_target_info *bp_tgt)
1056 /* Implement the to_remove_breakpoint method. */
1059 exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch,
1060 struct bp_target_info *bp_tgt,
1061 enum remove_bp_reason reason)
1067 exec_has_memory (struct target_ops *ops)
1069 /* We can provide memory if we have any file/target sections to read
1071 return (current_target_sections->sections
1072 != current_target_sections->sections_end);
1076 exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size)
1078 error (_("Can't create a corefile"));
1081 /* Fill in the exec file target vector. Very few entries need to be
1085 init_exec_ops (void)
1087 exec_ops.to_shortname = "exec";
1088 exec_ops.to_longname = "Local exec file";
1089 exec_ops.to_doc = "Use an executable file as a target.\n\
1090 Specify the filename of the executable file.";
1091 exec_ops.to_open = exec_open;
1092 exec_ops.to_close = exec_close_1;
1093 exec_ops.to_xfer_partial = exec_xfer_partial;
1094 exec_ops.to_get_section_table = exec_get_section_table;
1095 exec_ops.to_files_info = exec_files_info;
1096 exec_ops.to_insert_breakpoint = ignore;
1097 exec_ops.to_remove_breakpoint = exec_remove_breakpoint;
1098 exec_ops.to_stratum = file_stratum;
1099 exec_ops.to_has_memory = exec_has_memory;
1100 exec_ops.to_make_corefile_notes = exec_make_note_section;
1101 exec_ops.to_find_memory_regions = objfile_find_memory_regions;
1102 exec_ops.to_magic = OPS_MAGIC;
1106 _initialize_exec (void)
1108 struct cmd_list_element *c;
1114 c = add_cmd ("file", class_files, file_command, _("\
1115 Use FILE as program to be debugged.\n\
1116 It is read for its symbols, for getting the contents of pure memory,\n\
1117 and it is the program executed when you use the `run' command.\n\
1118 If FILE cannot be found as specified, your execution directory path\n\
1119 ($PATH) is searched for a command of that name.\n\
1120 No arg means to have no executable file and no symbols."), &cmdlist);
1121 set_cmd_completer (c, filename_completer);
1124 c = add_cmd ("exec-file", class_files, exec_file_command, _("\
1125 Use FILE as program for getting contents of pure memory.\n\
1126 If FILE cannot be found as specified, your execution directory path\n\
1127 is searched for a command of that name.\n\
1128 No arg means have no executable file."), &cmdlist);
1129 set_cmd_completer (c, filename_completer);
1131 add_com ("section", class_files, set_section_command, _("\
1132 Change the base address of section SECTION of the exec file to ADDR.\n\
1133 This can be used if the exec file does not contain section addresses,\n\
1134 (such as in the a.out format), or when the addresses specified in the\n\
1135 file itself are wrong. Each section must be changed separately. The\n\
1136 ``info files'' command lists all the sections and their addresses."));
1138 add_setshow_boolean_cmd ("write", class_support, &write_files, _("\
1139 Set writing into executable and core files."), _("\
1140 Show writing into executable and core files."), NULL,
1143 &setlist, &showlist);
1145 add_target_with_completer (&exec_ops, filename_completer);