Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
e2882c85 | 3 | Copyright (C) 1988-2018 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" |
76727919 | 32 | #include "observable.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" |
b46a8d7c | 38 | #include "source.h" |
c906108c | 39 | |
c906108c | 40 | #include <fcntl.h> |
dbda9972 | 41 | #include "readline/readline.h" |
c906108c SS |
42 | #include "gdbcore.h" |
43 | ||
44 | #include <ctype.h> | |
53ce3c39 | 45 | #include <sys/stat.h> |
a9a5a3d1 | 46 | #include "solist.h" |
325fac50 | 47 | #include <algorithm> |
b4987c95 | 48 | #include "common/pathstuff.h" |
c906108c | 49 | |
1d8b34a7 | 50 | void (*deprecated_file_changed_hook) (const char *); |
c906108c | 51 | |
d9f719f1 PA |
52 | static const target_info exec_target_info = { |
53 | "exec", | |
54 | N_("Local exec file"), | |
55 | N_("Use an executable file as a target.\n\ | |
56 | Specify the filename of the executable file.") | |
57 | }; | |
58 | ||
c906108c SS |
59 | /* The target vector for executable files. */ |
60 | ||
f6ac5f3d PA |
61 | struct exec_target final : public target_ops |
62 | { | |
63 | exec_target () | |
64 | { to_stratum = file_stratum; } | |
65 | ||
d9f719f1 PA |
66 | const target_info &info () const override |
67 | { return exec_target_info; } | |
f6ac5f3d | 68 | |
f6ac5f3d PA |
69 | void close () override; |
70 | enum target_xfer_status xfer_partial (enum target_object object, | |
71 | const char *annex, | |
72 | gdb_byte *readbuf, | |
73 | const gdb_byte *writebuf, | |
74 | ULONGEST offset, ULONGEST len, | |
75 | ULONGEST *xfered_len) override; | |
76 | struct target_section_table *get_section_table () override; | |
77 | void files_info () override; | |
78 | ||
57810aa7 | 79 | bool has_memory () override; |
f6ac5f3d PA |
80 | char *make_corefile_notes (bfd *, int *) override; |
81 | int find_memory_regions (find_memory_region_ftype func, void *data) override; | |
82 | }; | |
83 | ||
84 | static exec_target exec_ops; | |
c906108c | 85 | |
c906108c SS |
86 | /* Whether to open exec and core files read-only or read-write. */ |
87 | ||
88 | int write_files = 0; | |
920d2a44 AC |
89 | static void |
90 | show_write_files (struct ui_file *file, int from_tty, | |
91 | struct cmd_list_element *c, const char *value) | |
92 | { | |
93 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
94 | value); | |
95 | } | |
96 | ||
c906108c | 97 | |
d9f719f1 PA |
98 | static void |
99 | exec_target_open (const char *args, int from_tty) | |
1adeb98a FN |
100 | { |
101 | target_preopen (from_tty); | |
102 | exec_file_attach (args, from_tty); | |
103 | } | |
104 | ||
07b82ea5 PA |
105 | /* Close and clear exec_bfd. If we end up with no target sections to |
106 | read memory from, this unpushes the exec_ops target. */ | |
107 | ||
6c95b8df PA |
108 | void |
109 | exec_close (void) | |
07b82ea5 PA |
110 | { |
111 | if (exec_bfd) | |
112 | { | |
113 | bfd *abfd = exec_bfd; | |
07b82ea5 | 114 | |
cbb099e8 | 115 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
116 | |
117 | /* Removing target sections may close the exec_ops target. | |
118 | Clear exec_bfd before doing so to prevent recursion. */ | |
119 | exec_bfd = NULL; | |
120 | exec_bfd_mtime = 0; | |
121 | ||
046ac79f | 122 | remove_target_sections (&exec_bfd); |
1f0c4988 JK |
123 | |
124 | xfree (exec_filename); | |
125 | exec_filename = NULL; | |
07b82ea5 PA |
126 | } |
127 | } | |
128 | ||
6c95b8df PA |
129 | /* This is the target_close implementation. Clears all target |
130 | sections and closes all executable bfds from all program spaces. */ | |
131 | ||
f6ac5f3d PA |
132 | void |
133 | exec_target::close () | |
c906108c | 134 | { |
ab16fce8 | 135 | struct program_space *ss; |
5ed8105e | 136 | scoped_restore_current_program_space restore_pspace; |
6c95b8df | 137 | |
ab16fce8 | 138 | ALL_PSPACES (ss) |
5ed8105e PA |
139 | { |
140 | set_current_program_space (ss); | |
141 | clear_section_table (current_target_sections); | |
142 | exec_close (); | |
143 | } | |
c906108c SS |
144 | } |
145 | ||
f6ac5f3d | 146 | /* See gdbcore.h. */ |
a10de604 GB |
147 | |
148 | void | |
ecf45d2c SL |
149 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
150 | symfile_add_flags add_flags) | |
a10de604 | 151 | { |
57d1de9c | 152 | struct gdb_exception prev_err = exception_none; |
a10de604 | 153 | |
57d1de9c LM |
154 | /* exec_file_attach and symbol_file_add_main may throw an error if the file |
155 | cannot be opened either locally or remotely. | |
156 | ||
157 | This happens for example, when the file is first found in the local | |
158 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
159 | exist in the target filesystem, or when the file does exist, but | |
160 | is not readable. | |
88178e82 | 161 | |
57d1de9c LM |
162 | Even without a symbol file, the remote-based debugging session should |
163 | continue normally instead of ending abruptly. Hence we catch thrown | |
164 | errors/exceptions in the following code. */ | |
97e67fc6 | 165 | std::string saved_message; |
57d1de9c LM |
166 | TRY |
167 | { | |
ecf45d2c SL |
168 | /* We must do this step even if exec_file_host is NULL, so that |
169 | exec_file_attach will clear state. */ | |
170 | exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE); | |
57d1de9c LM |
171 | } |
172 | CATCH (err, RETURN_MASK_ERROR) | |
173 | { | |
174 | if (err.message != NULL) | |
175 | warning ("%s", err.message); | |
176 | ||
177 | prev_err = err; | |
178 | ||
179 | /* Save message so it doesn't get trashed by the catch below. */ | |
b5e1db87 | 180 | if (err.message != NULL) |
97e67fc6 TT |
181 | { |
182 | saved_message = err.message; | |
183 | prev_err.message = saved_message.c_str (); | |
184 | } | |
57d1de9c LM |
185 | } |
186 | END_CATCH | |
187 | ||
ecf45d2c | 188 | if (exec_file_host != NULL) |
57d1de9c | 189 | { |
ecf45d2c SL |
190 | TRY |
191 | { | |
192 | symbol_file_add_main (exec_file_host, add_flags); | |
193 | } | |
194 | CATCH (err, RETURN_MASK_ERROR) | |
195 | { | |
196 | if (!exception_print_same (prev_err, err)) | |
197 | warning ("%s", err.message); | |
198 | } | |
199 | END_CATCH | |
57d1de9c | 200 | } |
ecf45d2c SL |
201 | } |
202 | ||
203 | /* See gdbcore.h. */ | |
204 | ||
205 | void | |
206 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
207 | { | |
797bc1cb | 208 | char *exec_file_target; |
ecf45d2c SL |
209 | symfile_add_flags add_flags = 0; |
210 | ||
211 | /* Do nothing if we already have an executable filename. */ | |
212 | if (get_exec_file (0) != NULL) | |
213 | return; | |
214 | ||
215 | /* Try to determine a filename from the process itself. */ | |
216 | exec_file_target = target_pid_to_exec_file (pid); | |
217 | if (exec_file_target == NULL) | |
57d1de9c | 218 | { |
ecf45d2c SL |
219 | warning (_("No executable has been specified and target does not " |
220 | "support\n" | |
221 | "determining executable automatically. " | |
222 | "Try using the \"file\" command.")); | |
223 | return; | |
57d1de9c | 224 | } |
88178e82 | 225 | |
797bc1cb TT |
226 | gdb::unique_xmalloc_ptr<char> exec_file_host |
227 | = exec_file_find (exec_file_target, NULL); | |
ecf45d2c SL |
228 | |
229 | if (defer_bp_reset) | |
230 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
231 | ||
232 | if (from_tty) | |
233 | add_flags |= SYMFILE_VERBOSE; | |
234 | ||
235 | /* Attempt to open the exec file. */ | |
797bc1cb | 236 | try_open_exec_file (exec_file_host.get (), current_inferior (), add_flags); |
a10de604 GB |
237 | } |
238 | ||
907083d1 | 239 | /* Set FILENAME as the new exec file. |
c906108c | 240 | |
c5aa993b JM |
241 | This function is intended to be behave essentially the same |
242 | as exec_file_command, except that the latter will detect when | |
243 | a target is being debugged, and will ask the user whether it | |
244 | should be shut down first. (If the answer is "no", then the | |
245 | new file is ignored.) | |
c906108c | 246 | |
c5aa993b JM |
247 | This file is used by exec_file_command, to do the work of opening |
248 | and processing the exec file after any prompting has happened. | |
c906108c | 249 | |
c5aa993b JM |
250 | And, it is used by child_attach, when the attach command was |
251 | given a pid but not a exec pathname, and the attach command could | |
252 | figure out the pathname from the pid. (In this case, we shouldn't | |
253 | ask the user whether the current target should be shut down -- | |
907083d1 | 254 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
255 | |
256 | void | |
5f08566b | 257 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 258 | { |
9b333ba3 TT |
259 | /* First, acquire a reference to the current exec_bfd. We release |
260 | this at the end of the function; but acquiring it now lets the | |
261 | BFD cache return it if this call refers to the same file. */ | |
1831a9f9 | 262 | gdb_bfd_ref_ptr exec_bfd_holder = gdb_bfd_ref_ptr::new_reference (exec_bfd); |
192b62ce | 263 | |
c906108c | 264 | /* Remove any previous exec file. */ |
6c95b8df | 265 | exec_close (); |
c906108c SS |
266 | |
267 | /* Now open and digest the file the user requested, if any. */ | |
268 | ||
1adeb98a FN |
269 | if (!filename) |
270 | { | |
271 | if (from_tty) | |
a3f17187 | 272 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
273 | |
274 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
275 | } |
276 | else | |
c906108c | 277 | { |
64c0b5de | 278 | int load_via_target = 0; |
14278e1f | 279 | const char *scratch_pathname, *canonical_pathname; |
c906108c | 280 | int scratch_chan; |
07b82ea5 | 281 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 282 | char **matching; |
c5aa993b | 283 | |
64c0b5de GB |
284 | if (is_target_filename (filename)) |
285 | { | |
286 | if (target_filesystem_is_local ()) | |
287 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
288 | else | |
289 | load_via_target = 1; | |
290 | } | |
291 | ||
14278e1f | 292 | gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage; |
64c0b5de | 293 | if (load_via_target) |
c5aa993b | 294 | { |
64c0b5de GB |
295 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
296 | if (write_files) | |
297 | warning (_("writing into executable files is " | |
298 | "not supported for %s sysroots"), | |
299 | TARGET_SYSROOT_PREFIX); | |
300 | ||
14278e1f | 301 | scratch_pathname = filename; |
64c0b5de | 302 | scratch_chan = -1; |
64c0b5de | 303 | canonical_pathname = scratch_pathname; |
c5aa993b | 304 | } |
64c0b5de GB |
305 | else |
306 | { | |
307 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
308 | filename, write_files ? | |
309 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
e0cc99a6 | 310 | &scratch_storage); |
64c0b5de GB |
311 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
312 | if (scratch_chan < 0) | |
313 | { | |
0ae1c716 | 314 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
315 | |
316 | strcat (strcpy (exename, filename), ".exe"); | |
317 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
318 | exename, write_files ? | |
319 | O_RDWR | O_BINARY | |
320 | : O_RDONLY | O_BINARY, | |
e0cc99a6 | 321 | &scratch_storage); |
64c0b5de | 322 | } |
c906108c | 323 | #endif |
64c0b5de GB |
324 | if (scratch_chan < 0) |
325 | perror_with_name (filename); | |
a4453b7e | 326 | |
e0cc99a6 | 327 | scratch_pathname = scratch_storage.get (); |
a4453b7e | 328 | |
64c0b5de GB |
329 | /* gdb_bfd_open (and its variants) prefers canonicalized |
330 | pathname for better BFD caching. */ | |
14278e1f TT |
331 | canonical_storage = gdb_realpath (scratch_pathname); |
332 | canonical_pathname = canonical_storage.get (); | |
64c0b5de | 333 | } |
1f0c4988 | 334 | |
192b62ce | 335 | gdb_bfd_ref_ptr temp; |
64c0b5de | 336 | if (write_files && !load_via_target) |
192b62ce TT |
337 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
338 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 339 | else |
192b62ce TT |
340 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
341 | exec_bfd = temp.release (); | |
c906108c SS |
342 | |
343 | if (!exec_bfd) | |
9fe4a216 | 344 | { |
d5131498 | 345 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
346 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
347 | } | |
c906108c | 348 | |
64c0b5de GB |
349 | /* gdb_realpath_keepfile resolves symlinks on the local |
350 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 351 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
352 | if (load_via_target) |
353 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
354 | else | |
4971c9a7 | 355 | exec_filename = gdb_realpath_keepfile (scratch_pathname).release (); |
1f0c4988 | 356 | |
d18b8b7a | 357 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
358 | { |
359 | /* Make sure to close exec_bfd, or else "run" might try to use | |
360 | it. */ | |
6c95b8df | 361 | exec_close (); |
8a3fe4f8 | 362 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a | 363 | scratch_pathname, |
803c08d0 | 364 | gdb_bfd_errmsg (bfd_get_error (), matching).c_str ()); |
c906108c SS |
365 | } |
366 | ||
07b82ea5 | 367 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
368 | { |
369 | /* Make sure to close exec_bfd, or else "run" might try to use | |
370 | it. */ | |
6c95b8df | 371 | exec_close (); |
8a3fe4f8 | 372 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
373 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
374 | } | |
375 | ||
c04ea773 DJ |
376 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
377 | ||
c906108c SS |
378 | validate_files (); |
379 | ||
380 | set_gdbarch_from_file (exec_bfd); | |
381 | ||
07b82ea5 | 382 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
383 | list of sections. This possibly pushes the exec_ops |
384 | target. */ | |
ed9eebaf | 385 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 386 | xfree (sections); |
c906108c SS |
387 | |
388 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
389 | if (deprecated_exec_file_display_hook) |
390 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 391 | } |
9b333ba3 | 392 | |
ce7d4522 | 393 | bfd_cache_close_all (); |
76727919 | 394 | gdb::observers::executable_changed.notify (); |
c906108c SS |
395 | } |
396 | ||
397 | /* Process the first arg in ARGS as the new exec file. | |
398 | ||
c5aa993b JM |
399 | Note that we have to explicitly ignore additional args, since we can |
400 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
401 | which can take multiple args. |
402 | ||
0963b4bd | 403 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 404 | |
1adeb98a | 405 | static void |
1d8b34a7 | 406 | exec_file_command (const char *args, int from_tty) |
c906108c | 407 | { |
4c42eaff DJ |
408 | if (from_tty && target_has_execution |
409 | && !query (_("A program is being debugged already.\n" | |
410 | "Are you sure you want to change the file? "))) | |
411 | error (_("File not changed.")); | |
1adeb98a FN |
412 | |
413 | if (args) | |
414 | { | |
415 | /* Scan through the args and pick up the first non option arg | |
416 | as the filename. */ | |
417 | ||
773a1edc TT |
418 | gdb_argv built_argv (args); |
419 | char **argv = built_argv.get (); | |
1adeb98a FN |
420 | |
421 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
422 | {; | |
423 | } | |
424 | if (*argv == NULL) | |
8a3fe4f8 | 425 | error (_("No executable file name was specified")); |
1adeb98a | 426 | |
773a1edc TT |
427 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv)); |
428 | exec_file_attach (filename.get (), from_tty); | |
1adeb98a FN |
429 | } |
430 | else | |
431 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
432 | } |
433 | ||
0963b4bd | 434 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
435 | What a novelty. Why did GDB go through four major releases before this |
436 | command was added? */ | |
437 | ||
438 | static void | |
1d8b34a7 | 439 | file_command (const char *arg, int from_tty) |
c906108c SS |
440 | { |
441 | /* FIXME, if we lose on reading the symbol file, we should revert | |
442 | the exec file, but that's rough. */ | |
443 | exec_file_command (arg, from_tty); | |
444 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
445 | if (deprecated_file_changed_hook) |
446 | deprecated_file_changed_hook (arg); | |
c906108c | 447 | } |
c906108c | 448 | \f |
c5aa993b | 449 | |
0963b4bd | 450 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
451 | table_pp_char is a char * to get it through bfd_map_over_sections; |
452 | we cast it back to its proper type. */ | |
453 | ||
454 | static void | |
7be0c536 AC |
455 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
456 | void *table_pp_char) | |
c906108c | 457 | { |
0542c86d | 458 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
459 | flagword aflag; |
460 | ||
2b2848e2 DE |
461 | gdb_assert (abfd == asect->owner); |
462 | ||
0f5d55d8 JB |
463 | /* Check the section flags, but do not discard zero-length sections, since |
464 | some symbols may still be attached to this section. For instance, we | |
465 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
466 | section to which a symbol named "_end" was attached. The address | |
467 | of this symbol still needs to be relocated. */ | |
c906108c SS |
468 | aflag = bfd_get_section_flags (abfd, asect); |
469 | if (!(aflag & SEC_ALLOC)) | |
470 | return; | |
0f5d55d8 | 471 | |
046ac79f | 472 | (*table_pp)->owner = NULL; |
c906108c SS |
473 | (*table_pp)->the_bfd_section = asect; |
474 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
475 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
476 | (*table_pp)++; | |
477 | } | |
478 | ||
a5b1fd27 DE |
479 | /* See exec.h. */ |
480 | ||
481 | void | |
482 | clear_section_table (struct target_section_table *table) | |
483 | { | |
484 | xfree (table->sections); | |
485 | table->sections = table->sections_end = NULL; | |
486 | } | |
487 | ||
488 | /* Resize section table TABLE by ADJUSTMENT. | |
489 | ADJUSTMENT may be negative, in which case the caller must have already | |
490 | removed the sections being deleted. | |
491 | Returns the old size. */ | |
492 | ||
493 | static int | |
494 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 495 | { |
07b82ea5 PA |
496 | int old_count; |
497 | int new_count; | |
498 | ||
07b82ea5 PA |
499 | old_count = table->sections_end - table->sections; |
500 | ||
a5b1fd27 | 501 | new_count = adjustment + old_count; |
07b82ea5 PA |
502 | |
503 | if (new_count) | |
504 | { | |
224c3ddb SM |
505 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
506 | new_count); | |
07b82ea5 PA |
507 | table->sections_end = table->sections + new_count; |
508 | } | |
509 | else | |
a5b1fd27 | 510 | clear_section_table (table); |
07b82ea5 PA |
511 | |
512 | return old_count; | |
513 | } | |
514 | ||
c906108c SS |
515 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
516 | Returns 0 if OK, 1 on error. */ | |
517 | ||
518 | int | |
0542c86d PA |
519 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
520 | struct target_section **end) | |
c906108c SS |
521 | { |
522 | unsigned count; | |
523 | ||
524 | count = bfd_count_sections (some_bfd); | |
525 | if (*start) | |
b8c9b27d | 526 | xfree (* start); |
8d749320 | 527 | *start = XNEWVEC (struct target_section, count); |
c906108c | 528 | *end = *start; |
c5aa993b | 529 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 530 | if (*end > *start + count) |
3e43a32a MS |
531 | internal_error (__FILE__, __LINE__, |
532 | _("failed internal consistency check")); | |
c906108c SS |
533 | /* We could realloc the table, but it probably loses for most files. */ |
534 | return 0; | |
535 | } | |
07b82ea5 PA |
536 | |
537 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
538 | current set of target sections. */ | |
539 | ||
540 | void | |
046ac79f | 541 | add_target_sections (void *owner, |
ed9eebaf | 542 | struct target_section *sections, |
07b82ea5 PA |
543 | struct target_section *sections_end) |
544 | { | |
545 | int count; | |
546 | struct target_section_table *table = current_target_sections; | |
547 | ||
548 | count = sections_end - sections; | |
549 | ||
550 | if (count > 0) | |
551 | { | |
552 | int space = resize_section_table (table, count); | |
ed9eebaf | 553 | int i; |
d7f9d729 | 554 | |
ed9eebaf TT |
555 | for (i = 0; i < count; ++i) |
556 | { | |
557 | table->sections[space + i] = sections[i]; | |
046ac79f | 558 | table->sections[space + i].owner = owner; |
ed9eebaf | 559 | } |
07b82ea5 PA |
560 | |
561 | /* If these are the first file sections we can provide memory | |
562 | from, push the file_stratum target. */ | |
ab16fce8 TT |
563 | if (!target_is_pushed (&exec_ops)) |
564 | push_target (&exec_ops); | |
07b82ea5 PA |
565 | } |
566 | } | |
567 | ||
76ad5e1e NB |
568 | /* Add the sections of OBJFILE to the current set of target sections. */ |
569 | ||
570 | void | |
571 | add_target_sections_of_objfile (struct objfile *objfile) | |
572 | { | |
573 | struct target_section_table *table = current_target_sections; | |
574 | struct obj_section *osect; | |
575 | int space; | |
576 | unsigned count = 0; | |
577 | struct target_section *ts; | |
578 | ||
579 | if (objfile == NULL) | |
580 | return; | |
581 | ||
582 | /* Compute the number of sections to add. */ | |
583 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
584 | { | |
585 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
586 | continue; | |
587 | count++; | |
588 | } | |
589 | ||
590 | if (count == 0) | |
591 | return; | |
592 | ||
593 | space = resize_section_table (table, count); | |
594 | ||
595 | ts = table->sections + space; | |
596 | ||
597 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
598 | { | |
599 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
600 | continue; | |
601 | ||
602 | gdb_assert (ts < table->sections + space + count); | |
603 | ||
604 | ts->addr = obj_section_addr (osect); | |
605 | ts->endaddr = obj_section_endaddr (osect); | |
606 | ts->the_bfd_section = osect->the_bfd_section; | |
607 | ts->owner = (void *) objfile; | |
608 | ||
609 | ts++; | |
610 | } | |
611 | } | |
612 | ||
046ac79f JK |
613 | /* Remove all target sections owned by OWNER. |
614 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
615 | |
616 | void | |
046ac79f | 617 | remove_target_sections (void *owner) |
07b82ea5 PA |
618 | { |
619 | struct target_section *src, *dest; | |
07b82ea5 PA |
620 | struct target_section_table *table = current_target_sections; |
621 | ||
046ac79f JK |
622 | gdb_assert (owner != NULL); |
623 | ||
07b82ea5 PA |
624 | dest = table->sections; |
625 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 626 | if (src->owner != owner) |
07b82ea5 PA |
627 | { |
628 | /* Keep this section. */ | |
629 | if (dest < src) | |
630 | *dest = *src; | |
631 | dest++; | |
632 | } | |
633 | ||
634 | /* If we've dropped any sections, resize the section table. */ | |
635 | if (dest < src) | |
636 | { | |
637 | int old_count; | |
638 | ||
639 | old_count = resize_section_table (table, dest - src); | |
640 | ||
641 | /* If we don't have any more sections to read memory from, | |
642 | remove the file_stratum target from the stack. */ | |
643 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
644 | { |
645 | struct program_space *pspace; | |
646 | ||
647 | ALL_PSPACES (pspace) | |
648 | if (pspace->target_sections.sections | |
649 | != pspace->target_sections.sections_end) | |
650 | return; | |
651 | ||
652 | unpush_target (&exec_ops); | |
653 | } | |
07b82ea5 PA |
654 | } |
655 | } | |
656 | ||
c906108c | 657 | \f |
348f8c02 | 658 | |
1ca49d37 YQ |
659 | enum target_xfer_status |
660 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
661 | ULONGEST len, ULONGEST *xfered_len) | |
662 | { | |
663 | /* It's unduly pedantic to refuse to look at the executable for | |
664 | read-only pieces; so do the equivalent of readonly regions aka | |
665 | QTro packet. */ | |
666 | if (exec_bfd != NULL) | |
667 | { | |
668 | asection *s; | |
669 | bfd_size_type size; | |
670 | bfd_vma vma; | |
671 | ||
672 | for (s = exec_bfd->sections; s; s = s->next) | |
673 | { | |
674 | if ((s->flags & SEC_LOAD) == 0 | |
675 | || (s->flags & SEC_READONLY) == 0) | |
676 | continue; | |
677 | ||
678 | vma = s->vma; | |
679 | size = bfd_get_section_size (s); | |
680 | if (vma <= offset && offset < (vma + size)) | |
681 | { | |
682 | ULONGEST amt; | |
683 | ||
684 | amt = (vma + size) - offset; | |
685 | if (amt > len) | |
686 | amt = len; | |
687 | ||
688 | amt = bfd_get_section_contents (exec_bfd, s, | |
689 | readbuf, offset - vma, amt); | |
690 | ||
691 | if (amt == 0) | |
692 | return TARGET_XFER_EOF; | |
693 | else | |
694 | { | |
695 | *xfered_len = amt; | |
696 | return TARGET_XFER_OK; | |
697 | } | |
698 | } | |
699 | } | |
700 | } | |
701 | ||
702 | /* Indicate failure to find the requested memory block. */ | |
703 | return TARGET_XFER_E_IO; | |
704 | } | |
705 | ||
a79b1bc6 | 706 | /* Return all read-only memory ranges found in the target section |
5a2eb0ef | 707 | table defined by SECTIONS and SECTIONS_END, starting at (and |
a79b1bc6 | 708 | intersected with) MEMADDR for LEN bytes. */ |
5a2eb0ef | 709 | |
a79b1bc6 SM |
710 | static std::vector<mem_range> |
711 | section_table_available_memory (CORE_ADDR memaddr, ULONGEST len, | |
e6ca34fc PA |
712 | struct target_section *sections, |
713 | struct target_section *sections_end) | |
714 | { | |
a79b1bc6 | 715 | std::vector<mem_range> memory; |
e6ca34fc | 716 | |
a79b1bc6 | 717 | for (target_section *p = sections; p < sections_end; p++) |
e6ca34fc | 718 | { |
2b2848e2 DE |
719 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
720 | p->the_bfd_section) | |
e6ca34fc PA |
721 | & SEC_READONLY) == 0) |
722 | continue; | |
723 | ||
724 | /* Copy the meta-data, adjusted. */ | |
725 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
726 | { | |
727 | ULONGEST lo1, hi1, lo2, hi2; | |
e6ca34fc PA |
728 | |
729 | lo1 = memaddr; | |
730 | hi1 = memaddr + len; | |
731 | ||
732 | lo2 = p->addr; | |
733 | hi2 = p->endaddr; | |
734 | ||
a79b1bc6 SM |
735 | CORE_ADDR start = std::max (lo1, lo2); |
736 | int length = std::min (hi1, hi2) - start; | |
e6ca34fc | 737 | |
a79b1bc6 | 738 | memory.emplace_back (start, length); |
e6ca34fc PA |
739 | } |
740 | } | |
741 | ||
742 | return memory; | |
743 | } | |
744 | ||
1ee79381 YQ |
745 | enum target_xfer_status |
746 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
747 | ULONGEST len, ULONGEST *xfered_len) | |
748 | { | |
a79b1bc6 SM |
749 | target_section_table *table = target_get_section_table (&exec_ops); |
750 | std::vector<mem_range> available_memory | |
751 | = section_table_available_memory (offset, len, | |
752 | table->sections, table->sections_end); | |
1ee79381 | 753 | |
a79b1bc6 | 754 | normalize_mem_ranges (&available_memory); |
1ee79381 | 755 | |
a79b1bc6 | 756 | for (const mem_range &r : available_memory) |
1ee79381 | 757 | { |
a79b1bc6 | 758 | if (mem_ranges_overlap (r.start, r.length, offset, len)) |
1ee79381 YQ |
759 | { |
760 | CORE_ADDR end; | |
761 | enum target_xfer_status status; | |
762 | ||
763 | /* Get the intersection window. */ | |
a79b1bc6 | 764 | end = std::min<CORE_ADDR> (offset + len, r.start + r.length); |
1ee79381 YQ |
765 | |
766 | gdb_assert (end - offset <= len); | |
767 | ||
a79b1bc6 | 768 | if (offset >= r.start) |
1ee79381 YQ |
769 | status = exec_read_partial_read_only (readbuf, offset, |
770 | end - offset, | |
771 | xfered_len); | |
772 | else | |
773 | { | |
a79b1bc6 | 774 | *xfered_len = r.start - offset; |
bc113b4e | 775 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 | 776 | } |
1ee79381 YQ |
777 | return status; |
778 | } | |
779 | } | |
1ee79381 YQ |
780 | |
781 | *xfered_len = len; | |
bc113b4e | 782 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
783 | } |
784 | ||
9b409511 | 785 | enum target_xfer_status |
07b82ea5 | 786 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 787 | ULONGEST offset, ULONGEST len, |
9b409511 | 788 | ULONGEST *xfered_len, |
07b82ea5 PA |
789 | struct target_section *sections, |
790 | struct target_section *sections_end, | |
791 | const char *section_name) | |
c906108c | 792 | { |
020cc13c | 793 | int res; |
0542c86d | 794 | struct target_section *p; |
07b82ea5 PA |
795 | ULONGEST memaddr = offset; |
796 | ULONGEST memend = memaddr + len; | |
c906108c | 797 | |
b55e14c7 | 798 | if (len == 0) |
3e43a32a MS |
799 | internal_error (__FILE__, __LINE__, |
800 | _("failed internal consistency check")); | |
c906108c | 801 | |
348f8c02 | 802 | for (p = sections; p < sections_end; p++) |
c906108c | 803 | { |
2b2848e2 DE |
804 | struct bfd_section *asect = p->the_bfd_section; |
805 | bfd *abfd = asect->owner; | |
806 | ||
807 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 808 | continue; /* not the section we need. */ |
c906108c | 809 | if (memaddr >= p->addr) |
3db26b01 JB |
810 | { |
811 | if (memend <= p->endaddr) | |
812 | { | |
813 | /* Entire transfer is within this section. */ | |
07b82ea5 | 814 | if (writebuf) |
2b2848e2 | 815 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 816 | writebuf, memaddr - p->addr, |
85302095 AC |
817 | len); |
818 | else | |
2b2848e2 | 819 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 820 | readbuf, memaddr - p->addr, |
85302095 | 821 | len); |
9b409511 YQ |
822 | |
823 | if (res != 0) | |
824 | { | |
825 | *xfered_len = len; | |
826 | return TARGET_XFER_OK; | |
827 | } | |
828 | else | |
829 | return TARGET_XFER_EOF; | |
3db26b01 JB |
830 | } |
831 | else if (memaddr >= p->endaddr) | |
832 | { | |
833 | /* This section ends before the transfer starts. */ | |
834 | continue; | |
835 | } | |
836 | else | |
837 | { | |
838 | /* This section overlaps the transfer. Just do half. */ | |
839 | len = p->endaddr - memaddr; | |
07b82ea5 | 840 | if (writebuf) |
2b2848e2 | 841 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 842 | writebuf, memaddr - p->addr, |
85302095 AC |
843 | len); |
844 | else | |
2b2848e2 | 845 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 846 | readbuf, memaddr - p->addr, |
85302095 | 847 | len); |
9b409511 YQ |
848 | if (res != 0) |
849 | { | |
850 | *xfered_len = len; | |
851 | return TARGET_XFER_OK; | |
852 | } | |
853 | else | |
854 | return TARGET_XFER_EOF; | |
3db26b01 JB |
855 | } |
856 | } | |
c906108c SS |
857 | } |
858 | ||
9b409511 | 859 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 860 | } |
348f8c02 | 861 | |
f6ac5f3d PA |
862 | struct target_section_table * |
863 | exec_target::get_section_table () | |
348f8c02 | 864 | { |
07b82ea5 | 865 | return current_target_sections; |
348f8c02 PA |
866 | } |
867 | ||
f6ac5f3d PA |
868 | enum target_xfer_status |
869 | exec_target::xfer_partial (enum target_object object, | |
870 | const char *annex, gdb_byte *readbuf, | |
871 | const gdb_byte *writebuf, | |
872 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
348f8c02 | 873 | { |
f6ac5f3d | 874 | struct target_section_table *table = get_section_table (); |
07b82ea5 PA |
875 | |
876 | if (object == TARGET_OBJECT_MEMORY) | |
877 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 878 | offset, len, xfered_len, |
07b82ea5 PA |
879 | table->sections, |
880 | table->sections_end, | |
881 | NULL); | |
882 | else | |
2ed4b548 | 883 | return TARGET_XFER_E_IO; |
348f8c02 | 884 | } |
c906108c | 885 | \f |
c5aa993b | 886 | |
c906108c | 887 | void |
07b82ea5 | 888 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 889 | { |
5af949e3 | 890 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 891 | struct target_section *p; |
17a912b6 | 892 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 893 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 894 | |
c5aa993b | 895 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 896 | wrap_here (" "); |
a3f17187 | 897 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 898 | if (abfd == exec_bfd) |
51bee8e9 | 899 | { |
3e43a32a MS |
900 | /* gcc-3.4 does not like the initialization in |
901 | <p == t->sections_end>. */ | |
d904de5b | 902 | bfd_vma displacement = 0; |
2f1bdd26 | 903 | bfd_vma entry_point; |
51bee8e9 JK |
904 | |
905 | for (p = t->sections; p < t->sections_end; p++) | |
906 | { | |
2b2848e2 DE |
907 | struct bfd_section *psect = p->the_bfd_section; |
908 | bfd *pbfd = psect->owner; | |
51bee8e9 | 909 | |
2b2848e2 | 910 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
911 | != (SEC_ALLOC | SEC_LOAD)) |
912 | continue; | |
913 | ||
2b2848e2 DE |
914 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
915 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
916 | + bfd_get_section_size (psect))) | |
51bee8e9 | 917 | { |
2b2848e2 | 918 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
919 | break; |
920 | } | |
921 | } | |
922 | if (p == t->sections_end) | |
b37520b6 | 923 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 924 | bfd_get_filename (abfd)); |
51bee8e9 | 925 | |
2f1bdd26 MGD |
926 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
927 | bfd_get_start_address (abfd) | |
928 | + displacement); | |
51bee8e9 | 929 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 930 | paddress (gdbarch, entry_point)); |
51bee8e9 | 931 | } |
07b82ea5 | 932 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 933 | { |
2b2848e2 DE |
934 | struct bfd_section *psect = p->the_bfd_section; |
935 | bfd *pbfd = psect->owner; | |
936 | ||
bb599908 PH |
937 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
938 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
939 | |
940 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
941 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
942 | since most output will then be much wider than necessary. It | |
943 | may make sense to test the size of the file and choose the | |
944 | format string accordingly. */ | |
a3f17187 | 945 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
946 | if (info_verbose) |
947 | printf_filtered (" @ %s", | |
2b2848e2 DE |
948 | hex_string_custom (psect->filepos, 8)); |
949 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
950 | if (pbfd != abfd) | |
951 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
952 | printf_filtered ("\n"); |
953 | } | |
954 | } | |
955 | ||
f6ac5f3d PA |
956 | void |
957 | exec_target::files_info () | |
c906108c | 958 | { |
57008375 JK |
959 | if (exec_bfd) |
960 | print_section_info (current_target_sections, exec_bfd); | |
961 | else | |
962 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
963 | } |
964 | ||
965 | static void | |
0b39b52e | 966 | set_section_command (const char *args, int from_tty) |
c906108c | 967 | { |
0542c86d | 968 | struct target_section *p; |
0b39b52e | 969 | const char *secname; |
c906108c SS |
970 | unsigned seclen; |
971 | unsigned long secaddr; | |
972 | char secprint[100]; | |
973 | long offset; | |
07b82ea5 | 974 | struct target_section_table *table; |
c906108c SS |
975 | |
976 | if (args == 0) | |
8a3fe4f8 | 977 | error (_("Must specify section name and its virtual address")); |
c906108c | 978 | |
0963b4bd | 979 | /* Parse out section name. */ |
c5aa993b | 980 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
981 | seclen = args - secname; |
982 | ||
0963b4bd | 983 | /* Parse out new virtual address. */ |
c906108c SS |
984 | secaddr = parse_and_eval_address (args); |
985 | ||
07b82ea5 PA |
986 | table = current_target_sections; |
987 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 988 | { |
57008375 | 989 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 990 | p->the_bfd_section), seclen) |
57008375 | 991 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
992 | { |
993 | offset = secaddr - p->addr; | |
994 | p->addr += offset; | |
995 | p->endaddr += offset; | |
996 | if (from_tty) | |
f6ac5f3d | 997 | exec_ops.files_info (); |
c5aa993b JM |
998 | return; |
999 | } | |
c906108c | 1000 | } |
c906108c SS |
1001 | if (seclen >= sizeof (secprint)) |
1002 | seclen = sizeof (secprint) - 1; | |
1003 | strncpy (secprint, secname, seclen); | |
1004 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1005 | error (_("Section %s not found"), secprint); |
c906108c SS |
1006 | } |
1007 | ||
30510692 DJ |
1008 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1009 | it to ADDRESS. */ | |
c1bd25fd DJ |
1010 | |
1011 | void | |
1012 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1013 | { | |
0542c86d | 1014 | struct target_section *p; |
07b82ea5 | 1015 | struct target_section_table *table; |
c1bd25fd | 1016 | |
07b82ea5 PA |
1017 | table = current_target_sections; |
1018 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1019 | { |
2b2848e2 | 1020 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1021 | && index == p->the_bfd_section->index) |
c1bd25fd | 1022 | { |
30510692 | 1023 | p->endaddr += address - p->addr; |
c1bd25fd | 1024 | p->addr = address; |
c1bd25fd DJ |
1025 | } |
1026 | } | |
1027 | } | |
1028 | ||
57810aa7 | 1029 | bool |
f6ac5f3d | 1030 | exec_target::has_memory () |
c35b1492 PA |
1031 | { |
1032 | /* We can provide memory if we have any file/target sections to read | |
1033 | from. */ | |
1034 | return (current_target_sections->sections | |
1035 | != current_target_sections->sections_end); | |
1036 | } | |
1037 | ||
f6ac5f3d PA |
1038 | char * |
1039 | exec_target::make_corefile_notes (bfd *obfd, int *note_size) | |
83814951 TT |
1040 | { |
1041 | error (_("Can't create a corefile")); | |
1042 | } | |
be4d1333 | 1043 | |
f6ac5f3d PA |
1044 | int |
1045 | exec_target::find_memory_regions (find_memory_region_ftype func, void *data) | |
c906108c | 1046 | { |
f6ac5f3d | 1047 | return objfile_find_memory_regions (this, func, data); |
c906108c SS |
1048 | } |
1049 | ||
1050 | void | |
fba45db2 | 1051 | _initialize_exec (void) |
c906108c SS |
1052 | { |
1053 | struct cmd_list_element *c; | |
1054 | ||
c906108c SS |
1055 | if (!dbx_commands) |
1056 | { | |
1a966eab AC |
1057 | c = add_cmd ("file", class_files, file_command, _("\ |
1058 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1059 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1060 | and it is the program executed when you use the `run' command.\n\ | |
1061 | If FILE cannot be found as specified, your execution directory path\n\ | |
1062 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1063 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1064 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1065 | } |
1066 | ||
1a966eab AC |
1067 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1068 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1069 | If FILE cannot be found as specified, your execution directory path\n\ |
1070 | is searched for a command of that name.\n\ | |
1a966eab | 1071 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1072 | set_cmd_completer (c, filename_completer); |
c906108c | 1073 | |
1bedd215 AC |
1074 | add_com ("section", class_files, set_section_command, _("\ |
1075 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1076 | This can be used if the exec file does not contain section addresses,\n\ |
1077 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1078 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1079 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1080 | |
5bf193a2 AC |
1081 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1082 | Set writing into executable and core files."), _("\ | |
1083 | Show writing into executable and core files."), NULL, | |
1084 | NULL, | |
920d2a44 | 1085 | show_write_files, |
5bf193a2 | 1086 | &setlist, &showlist); |
c5aa993b | 1087 | |
d9f719f1 | 1088 | add_target (exec_target_info, exec_target_open, filename_completer); |
c906108c | 1089 | } |