Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
61baf725 | 3 | Copyright (C) 1988-2017 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
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 | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
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. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "frame.h" | |
22 | #include "inferior.h" | |
23 | #include "target.h" | |
24 | #include "gdbcmd.h" | |
25 | #include "language.h" | |
0ba1096a | 26 | #include "filenames.h" |
c906108c SS |
27 | #include "symfile.h" |
28 | #include "objfiles.h" | |
c5f0f3d0 | 29 | #include "completer.h" |
fd0407d6 | 30 | #include "value.h" |
4646aa9d | 31 | #include "exec.h" |
ea53e89f | 32 | #include "observer.h" |
dacec2a8 | 33 | #include "arch-utils.h" |
6c95b8df PA |
34 | #include "gdbthread.h" |
35 | #include "progspace.h" | |
cbb099e8 | 36 | #include "gdb_bfd.h" |
b427c1bc | 37 | #include "gcore.h" |
c906108c | 38 | |
c906108c | 39 | #include <fcntl.h> |
dbda9972 | 40 | #include "readline/readline.h" |
c906108c SS |
41 | #include "gdbcore.h" |
42 | ||
43 | #include <ctype.h> | |
53ce3c39 | 44 | #include <sys/stat.h> |
a9a5a3d1 | 45 | #include "solist.h" |
325fac50 | 46 | #include <algorithm> |
c906108c | 47 | |
9a4105ab | 48 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
49 | |
50 | /* Prototypes for local functions */ | |
51 | ||
a14ed312 | 52 | static void file_command (char *, int); |
c906108c | 53 | |
a14ed312 | 54 | static void set_section_command (char *, int); |
c906108c | 55 | |
a14ed312 | 56 | static void exec_files_info (struct target_ops *); |
c906108c | 57 | |
a14ed312 | 58 | static void init_exec_ops (void); |
c906108c | 59 | |
a14ed312 | 60 | void _initialize_exec (void); |
c906108c | 61 | |
c906108c SS |
62 | /* The target vector for executable files. */ |
63 | ||
e8b2341c | 64 | static struct target_ops exec_ops; |
c906108c | 65 | |
c906108c SS |
66 | /* Whether to open exec and core files read-only or read-write. */ |
67 | ||
68 | int write_files = 0; | |
920d2a44 AC |
69 | static void |
70 | show_write_files (struct ui_file *file, int from_tty, | |
71 | struct cmd_list_element *c, const char *value) | |
72 | { | |
73 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
74 | value); | |
75 | } | |
76 | ||
c906108c | 77 | |
4c42eaff | 78 | static void |
014f9477 | 79 | exec_open (const char *args, int from_tty) |
1adeb98a FN |
80 | { |
81 | target_preopen (from_tty); | |
82 | exec_file_attach (args, from_tty); | |
83 | } | |
84 | ||
07b82ea5 PA |
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. */ | |
87 | ||
6c95b8df PA |
88 | void |
89 | exec_close (void) | |
07b82ea5 PA |
90 | { |
91 | if (exec_bfd) | |
92 | { | |
93 | bfd *abfd = exec_bfd; | |
07b82ea5 | 94 | |
cbb099e8 | 95 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
96 | |
97 | /* Removing target sections may close the exec_ops target. | |
98 | Clear exec_bfd before doing so to prevent recursion. */ | |
99 | exec_bfd = NULL; | |
100 | exec_bfd_mtime = 0; | |
101 | ||
046ac79f | 102 | remove_target_sections (&exec_bfd); |
1f0c4988 JK |
103 | |
104 | xfree (exec_filename); | |
105 | exec_filename = NULL; | |
07b82ea5 PA |
106 | } |
107 | } | |
108 | ||
6c95b8df PA |
109 | /* This is the target_close implementation. Clears all target |
110 | sections and closes all executable bfds from all program spaces. */ | |
111 | ||
c906108c | 112 | static void |
de90e03d | 113 | exec_close_1 (struct target_ops *self) |
c906108c | 114 | { |
ab16fce8 | 115 | struct program_space *ss; |
5ed8105e | 116 | scoped_restore_current_program_space restore_pspace; |
6c95b8df | 117 | |
ab16fce8 | 118 | ALL_PSPACES (ss) |
5ed8105e PA |
119 | { |
120 | set_current_program_space (ss); | |
121 | clear_section_table (current_target_sections); | |
122 | exec_close (); | |
123 | } | |
c906108c SS |
124 | } |
125 | ||
1adeb98a FN |
126 | void |
127 | exec_file_clear (int from_tty) | |
128 | { | |
129 | /* Remove exec file. */ | |
6c95b8df | 130 | exec_close (); |
1adeb98a FN |
131 | |
132 | if (from_tty) | |
a3f17187 | 133 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
134 | } |
135 | ||
ecf45d2c | 136 | /* See exec.h. */ |
a10de604 GB |
137 | |
138 | void | |
ecf45d2c SL |
139 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
140 | symfile_add_flags add_flags) | |
a10de604 | 141 | { |
88178e82 | 142 | struct cleanup *old_chain; |
57d1de9c | 143 | struct gdb_exception prev_err = exception_none; |
a10de604 | 144 | |
ecf45d2c | 145 | old_chain = make_cleanup (free_current_contents, &prev_err.message); |
57d1de9c LM |
146 | |
147 | /* exec_file_attach and symbol_file_add_main may throw an error if the file | |
148 | cannot be opened either locally or remotely. | |
149 | ||
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 | |
153 | is not readable. | |
88178e82 | 154 | |
57d1de9c LM |
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. */ | |
158 | TRY | |
159 | { | |
ecf45d2c SL |
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); | |
57d1de9c LM |
163 | } |
164 | CATCH (err, RETURN_MASK_ERROR) | |
165 | { | |
166 | if (err.message != NULL) | |
167 | warning ("%s", err.message); | |
168 | ||
169 | prev_err = err; | |
170 | ||
171 | /* Save message so it doesn't get trashed by the catch below. */ | |
b5e1db87 LM |
172 | if (err.message != NULL) |
173 | prev_err.message = xstrdup (err.message); | |
57d1de9c LM |
174 | } |
175 | END_CATCH | |
176 | ||
ecf45d2c | 177 | if (exec_file_host != NULL) |
57d1de9c | 178 | { |
ecf45d2c SL |
179 | TRY |
180 | { | |
181 | symbol_file_add_main (exec_file_host, add_flags); | |
182 | } | |
183 | CATCH (err, RETURN_MASK_ERROR) | |
184 | { | |
185 | if (!exception_print_same (prev_err, err)) | |
186 | warning ("%s", err.message); | |
187 | } | |
188 | END_CATCH | |
57d1de9c | 189 | } |
ecf45d2c SL |
190 | |
191 | do_cleanups (old_chain); | |
192 | } | |
193 | ||
194 | /* See gdbcore.h. */ | |
195 | ||
196 | void | |
197 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
198 | { | |
199 | char *exec_file_target, *exec_file_host; | |
200 | struct cleanup *old_chain; | |
201 | symfile_add_flags add_flags = 0; | |
202 | ||
203 | /* Do nothing if we already have an executable filename. */ | |
204 | if (get_exec_file (0) != NULL) | |
205 | return; | |
206 | ||
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) | |
57d1de9c | 210 | { |
ecf45d2c SL |
211 | warning (_("No executable has been specified and target does not " |
212 | "support\n" | |
213 | "determining executable automatically. " | |
214 | "Try using the \"file\" command.")); | |
215 | return; | |
57d1de9c | 216 | } |
88178e82 | 217 | |
ecf45d2c SL |
218 | exec_file_host = exec_file_find (exec_file_target, NULL); |
219 | old_chain = make_cleanup (xfree, exec_file_host); | |
220 | ||
221 | if (defer_bp_reset) | |
222 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
223 | ||
224 | if (from_tty) | |
225 | add_flags |= SYMFILE_VERBOSE; | |
226 | ||
227 | /* Attempt to open the exec file. */ | |
228 | try_open_exec_file (exec_file_host, current_inferior (), add_flags); | |
88178e82 | 229 | do_cleanups (old_chain); |
a10de604 GB |
230 | } |
231 | ||
907083d1 | 232 | /* Set FILENAME as the new exec file. |
c906108c | 233 | |
c5aa993b JM |
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.) | |
c906108c | 239 | |
c5aa993b JM |
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. | |
c906108c | 242 | |
c5aa993b JM |
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 -- | |
907083d1 | 247 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
248 | |
249 | void | |
5f08566b | 250 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 251 | { |
9b333ba3 TT |
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); | |
192b62ce TT |
256 | gdb_bfd_ref_ptr exec_bfd_holder (exec_bfd); |
257 | ||
c906108c | 258 | /* Remove any previous exec file. */ |
6c95b8df | 259 | exec_close (); |
c906108c SS |
260 | |
261 | /* Now open and digest the file the user requested, if any. */ | |
262 | ||
1adeb98a FN |
263 | if (!filename) |
264 | { | |
265 | if (from_tty) | |
a3f17187 | 266 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
267 | |
268 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
269 | } |
270 | else | |
c906108c | 271 | { |
64c0b5de | 272 | int load_via_target = 0; |
14278e1f | 273 | const char *scratch_pathname, *canonical_pathname; |
c906108c | 274 | int scratch_chan; |
07b82ea5 | 275 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 276 | char **matching; |
c5aa993b | 277 | |
64c0b5de GB |
278 | if (is_target_filename (filename)) |
279 | { | |
280 | if (target_filesystem_is_local ()) | |
281 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
282 | else | |
283 | load_via_target = 1; | |
284 | } | |
285 | ||
14278e1f | 286 | gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage; |
64c0b5de | 287 | if (load_via_target) |
c5aa993b | 288 | { |
64c0b5de GB |
289 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
290 | if (write_files) | |
291 | warning (_("writing into executable files is " | |
292 | "not supported for %s sysroots"), | |
293 | TARGET_SYSROOT_PREFIX); | |
294 | ||
14278e1f | 295 | scratch_pathname = filename; |
64c0b5de | 296 | scratch_chan = -1; |
64c0b5de | 297 | canonical_pathname = scratch_pathname; |
c5aa993b | 298 | } |
64c0b5de GB |
299 | else |
300 | { | |
14278e1f TT |
301 | char *temp_pathname; |
302 | ||
64c0b5de GB |
303 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, |
304 | filename, write_files ? | |
305 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
14278e1f | 306 | &temp_pathname); |
64c0b5de GB |
307 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
308 | if (scratch_chan < 0) | |
309 | { | |
0ae1c716 | 310 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
311 | |
312 | strcat (strcpy (exename, filename), ".exe"); | |
313 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
314 | exename, write_files ? | |
315 | O_RDWR | O_BINARY | |
316 | : O_RDONLY | O_BINARY, | |
14278e1f | 317 | &temp_pathname); |
64c0b5de | 318 | } |
c906108c | 319 | #endif |
64c0b5de GB |
320 | if (scratch_chan < 0) |
321 | perror_with_name (filename); | |
a4453b7e | 322 | |
14278e1f TT |
323 | scratch_storage.reset (temp_pathname); |
324 | scratch_pathname = temp_pathname; | |
a4453b7e | 325 | |
64c0b5de GB |
326 | /* gdb_bfd_open (and its variants) prefers canonicalized |
327 | pathname for better BFD caching. */ | |
14278e1f TT |
328 | canonical_storage = gdb_realpath (scratch_pathname); |
329 | canonical_pathname = canonical_storage.get (); | |
64c0b5de | 330 | } |
1f0c4988 | 331 | |
192b62ce | 332 | gdb_bfd_ref_ptr temp; |
64c0b5de | 333 | if (write_files && !load_via_target) |
192b62ce TT |
334 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
335 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 336 | else |
192b62ce TT |
337 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
338 | exec_bfd = temp.release (); | |
c906108c SS |
339 | |
340 | if (!exec_bfd) | |
9fe4a216 | 341 | { |
d5131498 | 342 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
343 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
344 | } | |
c906108c | 345 | |
64c0b5de GB |
346 | /* gdb_realpath_keepfile resolves symlinks on the local |
347 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 348 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
349 | if (load_via_target) |
350 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
351 | else | |
4971c9a7 | 352 | exec_filename = gdb_realpath_keepfile (scratch_pathname).release (); |
1f0c4988 | 353 | |
d18b8b7a | 354 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
355 | { |
356 | /* Make sure to close exec_bfd, or else "run" might try to use | |
357 | it. */ | |
6c95b8df | 358 | exec_close (); |
8a3fe4f8 | 359 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
360 | scratch_pathname, |
361 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
362 | } |
363 | ||
07b82ea5 | 364 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
365 | { |
366 | /* Make sure to close exec_bfd, or else "run" might try to use | |
367 | it. */ | |
6c95b8df | 368 | exec_close (); |
8a3fe4f8 | 369 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
370 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
371 | } | |
372 | ||
c04ea773 DJ |
373 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
374 | ||
c906108c SS |
375 | validate_files (); |
376 | ||
377 | set_gdbarch_from_file (exec_bfd); | |
378 | ||
07b82ea5 | 379 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
380 | list of sections. This possibly pushes the exec_ops |
381 | target. */ | |
ed9eebaf | 382 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 383 | xfree (sections); |
c906108c SS |
384 | |
385 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
386 | if (deprecated_exec_file_display_hook) |
387 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 388 | } |
9b333ba3 | 389 | |
ce7d4522 | 390 | bfd_cache_close_all (); |
781b42b0 | 391 | observer_notify_executable_changed (); |
c906108c SS |
392 | } |
393 | ||
394 | /* Process the first arg in ARGS as the new exec file. | |
395 | ||
c5aa993b JM |
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() | |
1adeb98a FN |
398 | which can take multiple args. |
399 | ||
0963b4bd | 400 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 401 | |
1adeb98a | 402 | static void |
fba45db2 | 403 | exec_file_command (char *args, int from_tty) |
c906108c | 404 | { |
1adeb98a | 405 | char *filename; |
4c42eaff DJ |
406 | |
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.")); | |
1adeb98a FN |
411 | |
412 | if (args) | |
413 | { | |
414 | /* Scan through the args and pick up the first non option arg | |
415 | as the filename. */ | |
416 | ||
773a1edc TT |
417 | gdb_argv built_argv (args); |
418 | char **argv = built_argv.get (); | |
1adeb98a FN |
419 | |
420 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
421 | {; | |
422 | } | |
423 | if (*argv == NULL) | |
8a3fe4f8 | 424 | error (_("No executable file name was specified")); |
1adeb98a | 425 | |
773a1edc TT |
426 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv)); |
427 | exec_file_attach (filename.get (), from_tty); | |
1adeb98a FN |
428 | } |
429 | else | |
430 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
431 | } |
432 | ||
0963b4bd | 433 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
434 | What a novelty. Why did GDB go through four major releases before this |
435 | command was added? */ | |
436 | ||
437 | static void | |
fba45db2 | 438 | file_command (char *arg, int from_tty) |
c906108c SS |
439 | { |
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); | |
9a4105ab AC |
444 | if (deprecated_file_changed_hook) |
445 | deprecated_file_changed_hook (arg); | |
c906108c | 446 | } |
c906108c | 447 | \f |
c5aa993b | 448 | |
0963b4bd | 449 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
450 | table_pp_char is a char * to get it through bfd_map_over_sections; |
451 | we cast it back to its proper type. */ | |
452 | ||
453 | static void | |
7be0c536 AC |
454 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
455 | void *table_pp_char) | |
c906108c | 456 | { |
0542c86d | 457 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
458 | flagword aflag; |
459 | ||
2b2848e2 DE |
460 | gdb_assert (abfd == asect->owner); |
461 | ||
0f5d55d8 JB |
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. */ | |
c906108c SS |
467 | aflag = bfd_get_section_flags (abfd, asect); |
468 | if (!(aflag & SEC_ALLOC)) | |
469 | return; | |
0f5d55d8 | 470 | |
046ac79f | 471 | (*table_pp)->owner = NULL; |
c906108c SS |
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); | |
475 | (*table_pp)++; | |
476 | } | |
477 | ||
a5b1fd27 DE |
478 | /* See exec.h. */ |
479 | ||
480 | void | |
481 | clear_section_table (struct target_section_table *table) | |
482 | { | |
483 | xfree (table->sections); | |
484 | table->sections = table->sections_end = NULL; | |
485 | } | |
486 | ||
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. */ | |
491 | ||
492 | static int | |
493 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 494 | { |
07b82ea5 PA |
495 | int old_count; |
496 | int new_count; | |
497 | ||
07b82ea5 PA |
498 | old_count = table->sections_end - table->sections; |
499 | ||
a5b1fd27 | 500 | new_count = adjustment + old_count; |
07b82ea5 PA |
501 | |
502 | if (new_count) | |
503 | { | |
224c3ddb SM |
504 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
505 | new_count); | |
07b82ea5 PA |
506 | table->sections_end = table->sections + new_count; |
507 | } | |
508 | else | |
a5b1fd27 | 509 | clear_section_table (table); |
07b82ea5 PA |
510 | |
511 | return old_count; | |
512 | } | |
513 | ||
c906108c SS |
514 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
515 | Returns 0 if OK, 1 on error. */ | |
516 | ||
517 | int | |
0542c86d PA |
518 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
519 | struct target_section **end) | |
c906108c SS |
520 | { |
521 | unsigned count; | |
522 | ||
523 | count = bfd_count_sections (some_bfd); | |
524 | if (*start) | |
b8c9b27d | 525 | xfree (* start); |
8d749320 | 526 | *start = XNEWVEC (struct target_section, count); |
c906108c | 527 | *end = *start; |
c5aa993b | 528 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 529 | if (*end > *start + count) |
3e43a32a MS |
530 | internal_error (__FILE__, __LINE__, |
531 | _("failed internal consistency check")); | |
c906108c SS |
532 | /* We could realloc the table, but it probably loses for most files. */ |
533 | return 0; | |
534 | } | |
07b82ea5 PA |
535 | |
536 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
537 | current set of target sections. */ | |
538 | ||
539 | void | |
046ac79f | 540 | add_target_sections (void *owner, |
ed9eebaf | 541 | struct target_section *sections, |
07b82ea5 PA |
542 | struct target_section *sections_end) |
543 | { | |
544 | int count; | |
545 | struct target_section_table *table = current_target_sections; | |
546 | ||
547 | count = sections_end - sections; | |
548 | ||
549 | if (count > 0) | |
550 | { | |
551 | int space = resize_section_table (table, count); | |
ed9eebaf | 552 | int i; |
d7f9d729 | 553 | |
ed9eebaf TT |
554 | for (i = 0; i < count; ++i) |
555 | { | |
556 | table->sections[space + i] = sections[i]; | |
046ac79f | 557 | table->sections[space + i].owner = owner; |
ed9eebaf | 558 | } |
07b82ea5 PA |
559 | |
560 | /* If these are the first file sections we can provide memory | |
561 | from, push the file_stratum target. */ | |
ab16fce8 TT |
562 | if (!target_is_pushed (&exec_ops)) |
563 | push_target (&exec_ops); | |
07b82ea5 PA |
564 | } |
565 | } | |
566 | ||
76ad5e1e NB |
567 | /* Add the sections of OBJFILE to the current set of target sections. */ |
568 | ||
569 | void | |
570 | add_target_sections_of_objfile (struct objfile *objfile) | |
571 | { | |
572 | struct target_section_table *table = current_target_sections; | |
573 | struct obj_section *osect; | |
574 | int space; | |
575 | unsigned count = 0; | |
576 | struct target_section *ts; | |
577 | ||
578 | if (objfile == NULL) | |
579 | return; | |
580 | ||
581 | /* Compute the number of sections to add. */ | |
582 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
583 | { | |
584 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
585 | continue; | |
586 | count++; | |
587 | } | |
588 | ||
589 | if (count == 0) | |
590 | return; | |
591 | ||
592 | space = resize_section_table (table, count); | |
593 | ||
594 | ts = table->sections + space; | |
595 | ||
596 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
597 | { | |
598 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
599 | continue; | |
600 | ||
601 | gdb_assert (ts < table->sections + space + count); | |
602 | ||
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; | |
607 | ||
608 | ts++; | |
609 | } | |
610 | } | |
611 | ||
046ac79f JK |
612 | /* Remove all target sections owned by OWNER. |
613 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
614 | |
615 | void | |
046ac79f | 616 | remove_target_sections (void *owner) |
07b82ea5 PA |
617 | { |
618 | struct target_section *src, *dest; | |
07b82ea5 PA |
619 | struct target_section_table *table = current_target_sections; |
620 | ||
046ac79f JK |
621 | gdb_assert (owner != NULL); |
622 | ||
07b82ea5 PA |
623 | dest = table->sections; |
624 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 625 | if (src->owner != owner) |
07b82ea5 PA |
626 | { |
627 | /* Keep this section. */ | |
628 | if (dest < src) | |
629 | *dest = *src; | |
630 | dest++; | |
631 | } | |
632 | ||
633 | /* If we've dropped any sections, resize the section table. */ | |
634 | if (dest < src) | |
635 | { | |
636 | int old_count; | |
637 | ||
638 | old_count = resize_section_table (table, dest - src); | |
639 | ||
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) | |
6c95b8df PA |
643 | { |
644 | struct program_space *pspace; | |
645 | ||
646 | ALL_PSPACES (pspace) | |
647 | if (pspace->target_sections.sections | |
648 | != pspace->target_sections.sections_end) | |
649 | return; | |
650 | ||
651 | unpush_target (&exec_ops); | |
652 | } | |
07b82ea5 PA |
653 | } |
654 | } | |
655 | ||
c906108c | 656 | \f |
348f8c02 | 657 | |
1ca49d37 YQ |
658 | enum target_xfer_status |
659 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
660 | ULONGEST len, ULONGEST *xfered_len) | |
661 | { | |
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 | |
664 | QTro packet. */ | |
665 | if (exec_bfd != NULL) | |
666 | { | |
667 | asection *s; | |
668 | bfd_size_type size; | |
669 | bfd_vma vma; | |
670 | ||
671 | for (s = exec_bfd->sections; s; s = s->next) | |
672 | { | |
673 | if ((s->flags & SEC_LOAD) == 0 | |
674 | || (s->flags & SEC_READONLY) == 0) | |
675 | continue; | |
676 | ||
677 | vma = s->vma; | |
678 | size = bfd_get_section_size (s); | |
679 | if (vma <= offset && offset < (vma + size)) | |
680 | { | |
681 | ULONGEST amt; | |
682 | ||
683 | amt = (vma + size) - offset; | |
684 | if (amt > len) | |
685 | amt = len; | |
686 | ||
687 | amt = bfd_get_section_contents (exec_bfd, s, | |
688 | readbuf, offset - vma, amt); | |
689 | ||
690 | if (amt == 0) | |
691 | return TARGET_XFER_EOF; | |
692 | else | |
693 | { | |
694 | *xfered_len = amt; | |
695 | return TARGET_XFER_OK; | |
696 | } | |
697 | } | |
698 | } | |
699 | } | |
700 | ||
701 | /* Indicate failure to find the requested memory block. */ | |
702 | return TARGET_XFER_E_IO; | |
703 | } | |
704 | ||
5a2eb0ef YQ |
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 | |
708 | VEC. */ | |
709 | ||
710 | static VEC(mem_range_s) * | |
e6ca34fc | 711 | section_table_available_memory (VEC(mem_range_s) *memory, |
424447ee | 712 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
713 | struct target_section *sections, |
714 | struct target_section *sections_end) | |
715 | { | |
716 | struct target_section *p; | |
e6ca34fc PA |
717 | |
718 | for (p = sections; p < sections_end; p++) | |
719 | { | |
2b2848e2 DE |
720 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
721 | p->the_bfd_section) | |
e6ca34fc PA |
722 | & SEC_READONLY) == 0) |
723 | continue; | |
724 | ||
725 | /* Copy the meta-data, adjusted. */ | |
726 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
727 | { | |
728 | ULONGEST lo1, hi1, lo2, hi2; | |
729 | struct mem_range *r; | |
730 | ||
731 | lo1 = memaddr; | |
732 | hi1 = memaddr + len; | |
733 | ||
734 | lo2 = p->addr; | |
735 | hi2 = p->endaddr; | |
736 | ||
737 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
738 | ||
325fac50 PA |
739 | r->start = std::max (lo1, lo2); |
740 | r->length = std::min (hi1, hi2) - r->start; | |
e6ca34fc PA |
741 | } |
742 | } | |
743 | ||
744 | return memory; | |
745 | } | |
746 | ||
1ee79381 YQ |
747 | enum target_xfer_status |
748 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
749 | ULONGEST len, ULONGEST *xfered_len) | |
750 | { | |
751 | VEC(mem_range_s) *available_memory = NULL; | |
752 | struct target_section_table *table; | |
753 | struct cleanup *old_chain; | |
754 | mem_range_s *r; | |
755 | int i; | |
756 | ||
757 | table = target_get_section_table (&exec_ops); | |
758 | available_memory = section_table_available_memory (available_memory, | |
759 | offset, len, | |
760 | table->sections, | |
761 | table->sections_end); | |
762 | ||
763 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), | |
764 | &available_memory); | |
765 | ||
766 | normalize_mem_ranges (available_memory); | |
767 | ||
768 | for (i = 0; | |
769 | VEC_iterate (mem_range_s, available_memory, i, r); | |
770 | i++) | |
771 | { | |
772 | if (mem_ranges_overlap (r->start, r->length, offset, len)) | |
773 | { | |
774 | CORE_ADDR end; | |
775 | enum target_xfer_status status; | |
776 | ||
777 | /* Get the intersection window. */ | |
768adc05 | 778 | end = std::min<CORE_ADDR> (offset + len, r->start + r->length); |
1ee79381 YQ |
779 | |
780 | gdb_assert (end - offset <= len); | |
781 | ||
782 | if (offset >= r->start) | |
783 | status = exec_read_partial_read_only (readbuf, offset, | |
784 | end - offset, | |
785 | xfered_len); | |
786 | else | |
787 | { | |
788 | *xfered_len = r->start - offset; | |
bc113b4e | 789 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
790 | } |
791 | do_cleanups (old_chain); | |
792 | return status; | |
793 | } | |
794 | } | |
795 | do_cleanups (old_chain); | |
796 | ||
797 | *xfered_len = len; | |
bc113b4e | 798 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
799 | } |
800 | ||
9b409511 | 801 | enum target_xfer_status |
07b82ea5 | 802 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 803 | ULONGEST offset, ULONGEST len, |
9b409511 | 804 | ULONGEST *xfered_len, |
07b82ea5 PA |
805 | struct target_section *sections, |
806 | struct target_section *sections_end, | |
807 | const char *section_name) | |
c906108c | 808 | { |
020cc13c | 809 | int res; |
0542c86d | 810 | struct target_section *p; |
07b82ea5 PA |
811 | ULONGEST memaddr = offset; |
812 | ULONGEST memend = memaddr + len; | |
c906108c | 813 | |
b55e14c7 | 814 | if (len == 0) |
3e43a32a MS |
815 | internal_error (__FILE__, __LINE__, |
816 | _("failed internal consistency check")); | |
c906108c | 817 | |
348f8c02 | 818 | for (p = sections; p < sections_end; p++) |
c906108c | 819 | { |
2b2848e2 DE |
820 | struct bfd_section *asect = p->the_bfd_section; |
821 | bfd *abfd = asect->owner; | |
822 | ||
823 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 824 | continue; /* not the section we need. */ |
c906108c | 825 | if (memaddr >= p->addr) |
3db26b01 JB |
826 | { |
827 | if (memend <= p->endaddr) | |
828 | { | |
829 | /* Entire transfer is within this section. */ | |
07b82ea5 | 830 | if (writebuf) |
2b2848e2 | 831 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 832 | writebuf, memaddr - p->addr, |
85302095 AC |
833 | len); |
834 | else | |
2b2848e2 | 835 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 836 | readbuf, memaddr - p->addr, |
85302095 | 837 | len); |
9b409511 YQ |
838 | |
839 | if (res != 0) | |
840 | { | |
841 | *xfered_len = len; | |
842 | return TARGET_XFER_OK; | |
843 | } | |
844 | else | |
845 | return TARGET_XFER_EOF; | |
3db26b01 JB |
846 | } |
847 | else if (memaddr >= p->endaddr) | |
848 | { | |
849 | /* This section ends before the transfer starts. */ | |
850 | continue; | |
851 | } | |
852 | else | |
853 | { | |
854 | /* This section overlaps the transfer. Just do half. */ | |
855 | len = p->endaddr - memaddr; | |
07b82ea5 | 856 | if (writebuf) |
2b2848e2 | 857 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 858 | writebuf, memaddr - p->addr, |
85302095 AC |
859 | len); |
860 | else | |
2b2848e2 | 861 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 862 | readbuf, memaddr - p->addr, |
85302095 | 863 | len); |
9b409511 YQ |
864 | if (res != 0) |
865 | { | |
866 | *xfered_len = len; | |
867 | return TARGET_XFER_OK; | |
868 | } | |
869 | else | |
870 | return TARGET_XFER_EOF; | |
3db26b01 JB |
871 | } |
872 | } | |
c906108c SS |
873 | } |
874 | ||
9b409511 | 875 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 876 | } |
348f8c02 | 877 | |
70221824 | 878 | static struct target_section_table * |
07b82ea5 | 879 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 880 | { |
07b82ea5 | 881 | return current_target_sections; |
348f8c02 PA |
882 | } |
883 | ||
9b409511 | 884 | static enum target_xfer_status |
07b82ea5 PA |
885 | exec_xfer_partial (struct target_ops *ops, enum target_object object, |
886 | const char *annex, gdb_byte *readbuf, | |
887 | const gdb_byte *writebuf, | |
9b409511 | 888 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
348f8c02 | 889 | { |
07b82ea5 PA |
890 | struct target_section_table *table = target_get_section_table (ops); |
891 | ||
892 | if (object == TARGET_OBJECT_MEMORY) | |
893 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 894 | offset, len, xfered_len, |
07b82ea5 PA |
895 | table->sections, |
896 | table->sections_end, | |
897 | NULL); | |
898 | else | |
2ed4b548 | 899 | return TARGET_XFER_E_IO; |
348f8c02 | 900 | } |
c906108c | 901 | \f |
c5aa993b | 902 | |
c906108c | 903 | void |
07b82ea5 | 904 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 905 | { |
5af949e3 | 906 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 907 | struct target_section *p; |
17a912b6 | 908 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 909 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 910 | |
c5aa993b | 911 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 912 | wrap_here (" "); |
a3f17187 | 913 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 914 | if (abfd == exec_bfd) |
51bee8e9 | 915 | { |
3e43a32a MS |
916 | /* gcc-3.4 does not like the initialization in |
917 | <p == t->sections_end>. */ | |
d904de5b | 918 | bfd_vma displacement = 0; |
2f1bdd26 | 919 | bfd_vma entry_point; |
51bee8e9 JK |
920 | |
921 | for (p = t->sections; p < t->sections_end; p++) | |
922 | { | |
2b2848e2 DE |
923 | struct bfd_section *psect = p->the_bfd_section; |
924 | bfd *pbfd = psect->owner; | |
51bee8e9 | 925 | |
2b2848e2 | 926 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
927 | != (SEC_ALLOC | SEC_LOAD)) |
928 | continue; | |
929 | ||
2b2848e2 DE |
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))) | |
51bee8e9 | 933 | { |
2b2848e2 | 934 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
935 | break; |
936 | } | |
937 | } | |
938 | if (p == t->sections_end) | |
b37520b6 | 939 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 940 | bfd_get_filename (abfd)); |
51bee8e9 | 941 | |
2f1bdd26 MGD |
942 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
943 | bfd_get_start_address (abfd) | |
944 | + displacement); | |
51bee8e9 | 945 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 946 | paddress (gdbarch, entry_point)); |
51bee8e9 | 947 | } |
07b82ea5 | 948 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 949 | { |
2b2848e2 DE |
950 | struct bfd_section *psect = p->the_bfd_section; |
951 | bfd *pbfd = psect->owner; | |
952 | ||
bb599908 PH |
953 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
954 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
955 | |
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. */ | |
a3f17187 | 961 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
962 | if (info_verbose) |
963 | printf_filtered (" @ %s", | |
2b2848e2 DE |
964 | hex_string_custom (psect->filepos, 8)); |
965 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
966 | if (pbfd != abfd) | |
967 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
968 | printf_filtered ("\n"); |
969 | } | |
970 | } | |
971 | ||
972 | static void | |
fba45db2 | 973 | exec_files_info (struct target_ops *t) |
c906108c | 974 | { |
57008375 JK |
975 | if (exec_bfd) |
976 | print_section_info (current_target_sections, exec_bfd); | |
977 | else | |
978 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
979 | } |
980 | ||
981 | static void | |
fba45db2 | 982 | set_section_command (char *args, int from_tty) |
c906108c | 983 | { |
0542c86d | 984 | struct target_section *p; |
c906108c SS |
985 | char *secname; |
986 | unsigned seclen; | |
987 | unsigned long secaddr; | |
988 | char secprint[100]; | |
989 | long offset; | |
07b82ea5 | 990 | struct target_section_table *table; |
c906108c SS |
991 | |
992 | if (args == 0) | |
8a3fe4f8 | 993 | error (_("Must specify section name and its virtual address")); |
c906108c | 994 | |
0963b4bd | 995 | /* Parse out section name. */ |
c5aa993b | 996 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
997 | seclen = args - secname; |
998 | ||
0963b4bd | 999 | /* Parse out new virtual address. */ |
c906108c SS |
1000 | secaddr = parse_and_eval_address (args); |
1001 | ||
07b82ea5 PA |
1002 | table = current_target_sections; |
1003 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1004 | { |
57008375 | 1005 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 1006 | p->the_bfd_section), seclen) |
57008375 | 1007 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
1008 | { |
1009 | offset = secaddr - p->addr; | |
1010 | p->addr += offset; | |
1011 | p->endaddr += offset; | |
1012 | if (from_tty) | |
1013 | exec_files_info (&exec_ops); | |
1014 | return; | |
1015 | } | |
c906108c | 1016 | } |
c906108c SS |
1017 | if (seclen >= sizeof (secprint)) |
1018 | seclen = sizeof (secprint) - 1; | |
1019 | strncpy (secprint, secname, seclen); | |
1020 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1021 | error (_("Section %s not found"), secprint); |
c906108c SS |
1022 | } |
1023 | ||
30510692 DJ |
1024 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1025 | it to ADDRESS. */ | |
c1bd25fd DJ |
1026 | |
1027 | void | |
1028 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1029 | { | |
0542c86d | 1030 | struct target_section *p; |
07b82ea5 | 1031 | struct target_section_table *table; |
c1bd25fd | 1032 | |
07b82ea5 PA |
1033 | table = current_target_sections; |
1034 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1035 | { |
2b2848e2 | 1036 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1037 | && index == p->the_bfd_section->index) |
c1bd25fd | 1038 | { |
30510692 | 1039 | p->endaddr += address - p->addr; |
c1bd25fd | 1040 | p->addr = address; |
c1bd25fd DJ |
1041 | } |
1042 | } | |
1043 | } | |
1044 | ||
c906108c SS |
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). */ | |
1048 | ||
1049 | static int | |
3db08215 MM |
1050 | ignore (struct target_ops *ops, struct gdbarch *gdbarch, |
1051 | struct bp_target_info *bp_tgt) | |
c906108c SS |
1052 | { |
1053 | return 0; | |
1054 | } | |
1055 | ||
73971819 PA |
1056 | /* Implement the to_remove_breakpoint method. */ |
1057 | ||
1058 | static int | |
1059 | exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, | |
1060 | struct bp_target_info *bp_tgt, | |
1061 | enum remove_bp_reason reason) | |
1062 | { | |
1063 | return 0; | |
1064 | } | |
1065 | ||
c35b1492 PA |
1066 | static int |
1067 | exec_has_memory (struct target_ops *ops) | |
1068 | { | |
1069 | /* We can provide memory if we have any file/target sections to read | |
1070 | from. */ | |
1071 | return (current_target_sections->sections | |
1072 | != current_target_sections->sections_end); | |
1073 | } | |
1074 | ||
83814951 TT |
1075 | static char * |
1076 | exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size) | |
1077 | { | |
1078 | error (_("Can't create a corefile")); | |
1079 | } | |
be4d1333 | 1080 | |
c906108c SS |
1081 | /* Fill in the exec file target vector. Very few entries need to be |
1082 | defined. */ | |
1083 | ||
be4d1333 | 1084 | static void |
fba45db2 | 1085 | init_exec_ops (void) |
c906108c SS |
1086 | { |
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."; | |
1adeb98a | 1091 | exec_ops.to_open = exec_open; |
6c95b8df | 1092 | exec_ops.to_close = exec_close_1; |
07b82ea5 PA |
1093 | exec_ops.to_xfer_partial = exec_xfer_partial; |
1094 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
1095 | exec_ops.to_files_info = exec_files_info; |
1096 | exec_ops.to_insert_breakpoint = ignore; | |
73971819 | 1097 | exec_ops.to_remove_breakpoint = exec_remove_breakpoint; |
c906108c | 1098 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 1099 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 1100 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
b427c1bc | 1101 | exec_ops.to_find_memory_regions = objfile_find_memory_regions; |
c5aa993b | 1102 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
1103 | } |
1104 | ||
1105 | void | |
fba45db2 | 1106 | _initialize_exec (void) |
c906108c SS |
1107 | { |
1108 | struct cmd_list_element *c; | |
1109 | ||
1110 | init_exec_ops (); | |
1111 | ||
1112 | if (!dbx_commands) | |
1113 | { | |
1a966eab AC |
1114 | c = add_cmd ("file", class_files, file_command, _("\ |
1115 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
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\ | |
1a966eab | 1120 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1121 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1122 | } |
1123 | ||
1a966eab AC |
1124 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1125 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1126 | If FILE cannot be found as specified, your execution directory path\n\ |
1127 | is searched for a command of that name.\n\ | |
1a966eab | 1128 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1129 | set_cmd_completer (c, filename_completer); |
c906108c | 1130 | |
1bedd215 AC |
1131 | add_com ("section", class_files, set_section_command, _("\ |
1132 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
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\ | |
1bedd215 | 1136 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1137 | |
5bf193a2 AC |
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, | |
1141 | NULL, | |
920d2a44 | 1142 | show_write_files, |
5bf193a2 | 1143 | &setlist, &showlist); |
c5aa993b | 1144 | |
9852c492 | 1145 | add_target_with_completer (&exec_ops, filename_completer); |
c906108c | 1146 | } |