Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
42a4f53d | 3 | Copyright (C) 1988-2019 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" | |
d55e5aa6 TT |
21 | |
22 | /* Standard C includes. */ | |
23 | #include <ctype.h> | |
24 | #include <fcntl.h> | |
25 | #include <sys/stat.h> | |
26 | ||
27 | /* Standard C++ includes. */ | |
28 | #include <algorithm> | |
29 | ||
30 | /* Local non-gdb includes. */ | |
31 | #include "arch-utils.h" | |
32 | #include "common/pathstuff.h" | |
33 | #include "completer.h" | |
34 | #include "exec.h" | |
35 | #include "filenames.h" | |
c906108c | 36 | #include "frame.h" |
d55e5aa6 TT |
37 | #include "gcore.h" |
38 | #include "gdb_bfd.h" | |
c906108c | 39 | #include "gdbcmd.h" |
d55e5aa6 TT |
40 | #include "gdbcore.h" |
41 | #include "gdbthread.h" | |
42 | #include "inferior.h" | |
c906108c | 43 | #include "language.h" |
c906108c | 44 | #include "objfiles.h" |
76727919 | 45 | #include "observable.h" |
6c95b8df | 46 | #include "progspace.h" |
dbda9972 | 47 | #include "readline/readline.h" |
a9a5a3d1 | 48 | #include "solist.h" |
d55e5aa6 TT |
49 | #include "source.h" |
50 | #include "symfile.h" | |
51 | #include "target.h" | |
52 | #include "value.h" | |
c906108c | 53 | |
1d8b34a7 | 54 | void (*deprecated_file_changed_hook) (const char *); |
c906108c | 55 | |
d9f719f1 PA |
56 | static const target_info exec_target_info = { |
57 | "exec", | |
58 | N_("Local exec file"), | |
59 | N_("Use an executable file as a target.\n\ | |
60 | Specify the filename of the executable file.") | |
61 | }; | |
62 | ||
c906108c SS |
63 | /* The target vector for executable files. */ |
64 | ||
f6ac5f3d PA |
65 | struct exec_target final : public target_ops |
66 | { | |
d9f719f1 PA |
67 | const target_info &info () const override |
68 | { return exec_target_info; } | |
f6ac5f3d | 69 | |
66b4deae PA |
70 | strata stratum () const override { return file_stratum; } |
71 | ||
f6ac5f3d PA |
72 | void close () override; |
73 | enum target_xfer_status xfer_partial (enum target_object object, | |
74 | const char *annex, | |
75 | gdb_byte *readbuf, | |
76 | const gdb_byte *writebuf, | |
77 | ULONGEST offset, ULONGEST len, | |
78 | ULONGEST *xfered_len) override; | |
79 | struct target_section_table *get_section_table () override; | |
80 | void files_info () override; | |
81 | ||
57810aa7 | 82 | bool has_memory () override; |
f6ac5f3d PA |
83 | char *make_corefile_notes (bfd *, int *) override; |
84 | int find_memory_regions (find_memory_region_ftype func, void *data) override; | |
85 | }; | |
86 | ||
87 | static exec_target exec_ops; | |
c906108c | 88 | |
c906108c SS |
89 | /* Whether to open exec and core files read-only or read-write. */ |
90 | ||
91 | int write_files = 0; | |
920d2a44 AC |
92 | static void |
93 | show_write_files (struct ui_file *file, int from_tty, | |
94 | struct cmd_list_element *c, const char *value) | |
95 | { | |
96 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
97 | value); | |
98 | } | |
99 | ||
c906108c | 100 | |
d9f719f1 PA |
101 | static void |
102 | exec_target_open (const char *args, int from_tty) | |
1adeb98a FN |
103 | { |
104 | target_preopen (from_tty); | |
105 | exec_file_attach (args, from_tty); | |
106 | } | |
107 | ||
07b82ea5 PA |
108 | /* Close and clear exec_bfd. If we end up with no target sections to |
109 | read memory from, this unpushes the exec_ops target. */ | |
110 | ||
6c95b8df PA |
111 | void |
112 | exec_close (void) | |
07b82ea5 PA |
113 | { |
114 | if (exec_bfd) | |
115 | { | |
116 | bfd *abfd = exec_bfd; | |
07b82ea5 | 117 | |
cbb099e8 | 118 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
119 | |
120 | /* Removing target sections may close the exec_ops target. | |
121 | Clear exec_bfd before doing so to prevent recursion. */ | |
122 | exec_bfd = NULL; | |
123 | exec_bfd_mtime = 0; | |
124 | ||
046ac79f | 125 | remove_target_sections (&exec_bfd); |
1f0c4988 JK |
126 | |
127 | xfree (exec_filename); | |
128 | exec_filename = NULL; | |
07b82ea5 PA |
129 | } |
130 | } | |
131 | ||
6c95b8df PA |
132 | /* This is the target_close implementation. Clears all target |
133 | sections and closes all executable bfds from all program spaces. */ | |
134 | ||
f6ac5f3d PA |
135 | void |
136 | exec_target::close () | |
c906108c | 137 | { |
ab16fce8 | 138 | struct program_space *ss; |
5ed8105e | 139 | scoped_restore_current_program_space restore_pspace; |
6c95b8df | 140 | |
ab16fce8 | 141 | ALL_PSPACES (ss) |
5ed8105e PA |
142 | { |
143 | set_current_program_space (ss); | |
144 | clear_section_table (current_target_sections); | |
145 | exec_close (); | |
146 | } | |
c906108c SS |
147 | } |
148 | ||
f6ac5f3d | 149 | /* See gdbcore.h. */ |
a10de604 GB |
150 | |
151 | void | |
ecf45d2c SL |
152 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
153 | symfile_add_flags add_flags) | |
a10de604 | 154 | { |
57d1de9c | 155 | struct gdb_exception prev_err = exception_none; |
a10de604 | 156 | |
57d1de9c LM |
157 | /* exec_file_attach and symbol_file_add_main may throw an error if the file |
158 | cannot be opened either locally or remotely. | |
159 | ||
160 | This happens for example, when the file is first found in the local | |
161 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
162 | exist in the target filesystem, or when the file does exist, but | |
163 | is not readable. | |
88178e82 | 164 | |
57d1de9c LM |
165 | Even without a symbol file, the remote-based debugging session should |
166 | continue normally instead of ending abruptly. Hence we catch thrown | |
167 | errors/exceptions in the following code. */ | |
97e67fc6 | 168 | std::string saved_message; |
57d1de9c LM |
169 | TRY |
170 | { | |
ecf45d2c SL |
171 | /* We must do this step even if exec_file_host is NULL, so that |
172 | exec_file_attach will clear state. */ | |
173 | exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE); | |
57d1de9c LM |
174 | } |
175 | CATCH (err, RETURN_MASK_ERROR) | |
176 | { | |
177 | if (err.message != NULL) | |
178 | warning ("%s", err.message); | |
179 | ||
180 | prev_err = err; | |
181 | ||
182 | /* Save message so it doesn't get trashed by the catch below. */ | |
b5e1db87 | 183 | if (err.message != NULL) |
97e67fc6 TT |
184 | { |
185 | saved_message = err.message; | |
186 | prev_err.message = saved_message.c_str (); | |
187 | } | |
57d1de9c LM |
188 | } |
189 | END_CATCH | |
190 | ||
ecf45d2c | 191 | if (exec_file_host != NULL) |
57d1de9c | 192 | { |
ecf45d2c SL |
193 | TRY |
194 | { | |
195 | symbol_file_add_main (exec_file_host, add_flags); | |
196 | } | |
197 | CATCH (err, RETURN_MASK_ERROR) | |
198 | { | |
199 | if (!exception_print_same (prev_err, err)) | |
200 | warning ("%s", err.message); | |
201 | } | |
202 | END_CATCH | |
57d1de9c | 203 | } |
ecf45d2c SL |
204 | } |
205 | ||
206 | /* See gdbcore.h. */ | |
207 | ||
208 | void | |
209 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
210 | { | |
797bc1cb | 211 | char *exec_file_target; |
ecf45d2c SL |
212 | symfile_add_flags add_flags = 0; |
213 | ||
214 | /* Do nothing if we already have an executable filename. */ | |
215 | if (get_exec_file (0) != NULL) | |
216 | return; | |
217 | ||
218 | /* Try to determine a filename from the process itself. */ | |
219 | exec_file_target = target_pid_to_exec_file (pid); | |
220 | if (exec_file_target == NULL) | |
57d1de9c | 221 | { |
ecf45d2c SL |
222 | warning (_("No executable has been specified and target does not " |
223 | "support\n" | |
224 | "determining executable automatically. " | |
225 | "Try using the \"file\" command.")); | |
226 | return; | |
57d1de9c | 227 | } |
88178e82 | 228 | |
797bc1cb TT |
229 | gdb::unique_xmalloc_ptr<char> exec_file_host |
230 | = exec_file_find (exec_file_target, NULL); | |
ecf45d2c SL |
231 | |
232 | if (defer_bp_reset) | |
233 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
234 | ||
235 | if (from_tty) | |
236 | add_flags |= SYMFILE_VERBOSE; | |
237 | ||
238 | /* Attempt to open the exec file. */ | |
797bc1cb | 239 | try_open_exec_file (exec_file_host.get (), current_inferior (), add_flags); |
a10de604 GB |
240 | } |
241 | ||
907083d1 | 242 | /* Set FILENAME as the new exec file. |
c906108c | 243 | |
c5aa993b JM |
244 | This function is intended to be behave essentially the same |
245 | as exec_file_command, except that the latter will detect when | |
246 | a target is being debugged, and will ask the user whether it | |
247 | should be shut down first. (If the answer is "no", then the | |
248 | new file is ignored.) | |
c906108c | 249 | |
c5aa993b JM |
250 | This file is used by exec_file_command, to do the work of opening |
251 | and processing the exec file after any prompting has happened. | |
c906108c | 252 | |
c5aa993b JM |
253 | And, it is used by child_attach, when the attach command was |
254 | given a pid but not a exec pathname, and the attach command could | |
255 | figure out the pathname from the pid. (In this case, we shouldn't | |
256 | ask the user whether the current target should be shut down -- | |
907083d1 | 257 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
258 | |
259 | void | |
5f08566b | 260 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 261 | { |
9b333ba3 TT |
262 | /* First, acquire a reference to the current exec_bfd. We release |
263 | this at the end of the function; but acquiring it now lets the | |
264 | BFD cache return it if this call refers to the same file. */ | |
1831a9f9 | 265 | gdb_bfd_ref_ptr exec_bfd_holder = gdb_bfd_ref_ptr::new_reference (exec_bfd); |
192b62ce | 266 | |
c906108c | 267 | /* Remove any previous exec file. */ |
6c95b8df | 268 | exec_close (); |
c906108c SS |
269 | |
270 | /* Now open and digest the file the user requested, if any. */ | |
271 | ||
1adeb98a FN |
272 | if (!filename) |
273 | { | |
274 | if (from_tty) | |
a3f17187 | 275 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
276 | |
277 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
278 | } |
279 | else | |
c906108c | 280 | { |
64c0b5de | 281 | int load_via_target = 0; |
14278e1f | 282 | const char *scratch_pathname, *canonical_pathname; |
c906108c | 283 | int scratch_chan; |
07b82ea5 | 284 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 285 | char **matching; |
c5aa993b | 286 | |
64c0b5de GB |
287 | if (is_target_filename (filename)) |
288 | { | |
289 | if (target_filesystem_is_local ()) | |
290 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
291 | else | |
292 | load_via_target = 1; | |
293 | } | |
294 | ||
14278e1f | 295 | gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage; |
64c0b5de | 296 | if (load_via_target) |
c5aa993b | 297 | { |
64c0b5de GB |
298 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
299 | if (write_files) | |
300 | warning (_("writing into executable files is " | |
301 | "not supported for %s sysroots"), | |
302 | TARGET_SYSROOT_PREFIX); | |
303 | ||
14278e1f | 304 | scratch_pathname = filename; |
64c0b5de | 305 | scratch_chan = -1; |
64c0b5de | 306 | canonical_pathname = scratch_pathname; |
c5aa993b | 307 | } |
64c0b5de GB |
308 | else |
309 | { | |
310 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
311 | filename, write_files ? | |
312 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
e0cc99a6 | 313 | &scratch_storage); |
64c0b5de GB |
314 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
315 | if (scratch_chan < 0) | |
316 | { | |
0ae1c716 | 317 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
318 | |
319 | strcat (strcpy (exename, filename), ".exe"); | |
320 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
321 | exename, write_files ? | |
322 | O_RDWR | O_BINARY | |
323 | : O_RDONLY | O_BINARY, | |
e0cc99a6 | 324 | &scratch_storage); |
64c0b5de | 325 | } |
c906108c | 326 | #endif |
64c0b5de GB |
327 | if (scratch_chan < 0) |
328 | perror_with_name (filename); | |
a4453b7e | 329 | |
e0cc99a6 | 330 | scratch_pathname = scratch_storage.get (); |
a4453b7e | 331 | |
64c0b5de GB |
332 | /* gdb_bfd_open (and its variants) prefers canonicalized |
333 | pathname for better BFD caching. */ | |
14278e1f TT |
334 | canonical_storage = gdb_realpath (scratch_pathname); |
335 | canonical_pathname = canonical_storage.get (); | |
64c0b5de | 336 | } |
1f0c4988 | 337 | |
192b62ce | 338 | gdb_bfd_ref_ptr temp; |
64c0b5de | 339 | if (write_files && !load_via_target) |
192b62ce TT |
340 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
341 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 342 | else |
192b62ce TT |
343 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
344 | exec_bfd = temp.release (); | |
c906108c SS |
345 | |
346 | if (!exec_bfd) | |
9fe4a216 | 347 | { |
d5131498 | 348 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
349 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
350 | } | |
c906108c | 351 | |
64c0b5de GB |
352 | /* gdb_realpath_keepfile resolves symlinks on the local |
353 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 354 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
355 | if (load_via_target) |
356 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
357 | else | |
4971c9a7 | 358 | exec_filename = gdb_realpath_keepfile (scratch_pathname).release (); |
1f0c4988 | 359 | |
d18b8b7a | 360 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
361 | { |
362 | /* Make sure to close exec_bfd, or else "run" might try to use | |
363 | it. */ | |
6c95b8df | 364 | exec_close (); |
8a3fe4f8 | 365 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a | 366 | scratch_pathname, |
803c08d0 | 367 | gdb_bfd_errmsg (bfd_get_error (), matching).c_str ()); |
c906108c SS |
368 | } |
369 | ||
07b82ea5 | 370 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
371 | { |
372 | /* Make sure to close exec_bfd, or else "run" might try to use | |
373 | it. */ | |
6c95b8df | 374 | exec_close (); |
8a3fe4f8 | 375 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
376 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
377 | } | |
378 | ||
c04ea773 DJ |
379 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
380 | ||
c906108c SS |
381 | validate_files (); |
382 | ||
383 | set_gdbarch_from_file (exec_bfd); | |
384 | ||
07b82ea5 | 385 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
386 | list of sections. This possibly pushes the exec_ops |
387 | target. */ | |
ed9eebaf | 388 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 389 | xfree (sections); |
c906108c SS |
390 | |
391 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
392 | if (deprecated_exec_file_display_hook) |
393 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 394 | } |
9b333ba3 | 395 | |
ce7d4522 | 396 | bfd_cache_close_all (); |
76727919 | 397 | gdb::observers::executable_changed.notify (); |
c906108c SS |
398 | } |
399 | ||
400 | /* Process the first arg in ARGS as the new exec file. | |
401 | ||
c5aa993b JM |
402 | Note that we have to explicitly ignore additional args, since we can |
403 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
404 | which can take multiple args. |
405 | ||
0963b4bd | 406 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 407 | |
1adeb98a | 408 | static void |
1d8b34a7 | 409 | exec_file_command (const char *args, int from_tty) |
c906108c | 410 | { |
4c42eaff DJ |
411 | if (from_tty && target_has_execution |
412 | && !query (_("A program is being debugged already.\n" | |
413 | "Are you sure you want to change the file? "))) | |
414 | error (_("File not changed.")); | |
1adeb98a FN |
415 | |
416 | if (args) | |
417 | { | |
418 | /* Scan through the args and pick up the first non option arg | |
419 | as the filename. */ | |
420 | ||
773a1edc TT |
421 | gdb_argv built_argv (args); |
422 | char **argv = built_argv.get (); | |
1adeb98a FN |
423 | |
424 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
425 | {; | |
426 | } | |
427 | if (*argv == NULL) | |
8a3fe4f8 | 428 | error (_("No executable file name was specified")); |
1adeb98a | 429 | |
773a1edc TT |
430 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv)); |
431 | exec_file_attach (filename.get (), from_tty); | |
1adeb98a FN |
432 | } |
433 | else | |
434 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
435 | } |
436 | ||
0963b4bd | 437 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
438 | What a novelty. Why did GDB go through four major releases before this |
439 | command was added? */ | |
440 | ||
441 | static void | |
1d8b34a7 | 442 | file_command (const char *arg, int from_tty) |
c906108c SS |
443 | { |
444 | /* FIXME, if we lose on reading the symbol file, we should revert | |
445 | the exec file, but that's rough. */ | |
446 | exec_file_command (arg, from_tty); | |
447 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
448 | if (deprecated_file_changed_hook) |
449 | deprecated_file_changed_hook (arg); | |
c906108c | 450 | } |
c906108c | 451 | \f |
c5aa993b | 452 | |
0963b4bd | 453 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
454 | table_pp_char is a char * to get it through bfd_map_over_sections; |
455 | we cast it back to its proper type. */ | |
456 | ||
457 | static void | |
7be0c536 AC |
458 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
459 | void *table_pp_char) | |
c906108c | 460 | { |
0542c86d | 461 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
462 | flagword aflag; |
463 | ||
2b2848e2 DE |
464 | gdb_assert (abfd == asect->owner); |
465 | ||
0f5d55d8 JB |
466 | /* Check the section flags, but do not discard zero-length sections, since |
467 | some symbols may still be attached to this section. For instance, we | |
468 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
469 | section to which a symbol named "_end" was attached. The address | |
470 | of this symbol still needs to be relocated. */ | |
c906108c SS |
471 | aflag = bfd_get_section_flags (abfd, asect); |
472 | if (!(aflag & SEC_ALLOC)) | |
473 | return; | |
0f5d55d8 | 474 | |
046ac79f | 475 | (*table_pp)->owner = NULL; |
c906108c SS |
476 | (*table_pp)->the_bfd_section = asect; |
477 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
478 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
479 | (*table_pp)++; | |
480 | } | |
481 | ||
a5b1fd27 DE |
482 | /* See exec.h. */ |
483 | ||
484 | void | |
485 | clear_section_table (struct target_section_table *table) | |
486 | { | |
487 | xfree (table->sections); | |
488 | table->sections = table->sections_end = NULL; | |
489 | } | |
490 | ||
491 | /* Resize section table TABLE by ADJUSTMENT. | |
492 | ADJUSTMENT may be negative, in which case the caller must have already | |
493 | removed the sections being deleted. | |
494 | Returns the old size. */ | |
495 | ||
496 | static int | |
497 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 498 | { |
07b82ea5 PA |
499 | int old_count; |
500 | int new_count; | |
501 | ||
07b82ea5 PA |
502 | old_count = table->sections_end - table->sections; |
503 | ||
a5b1fd27 | 504 | new_count = adjustment + old_count; |
07b82ea5 PA |
505 | |
506 | if (new_count) | |
507 | { | |
224c3ddb SM |
508 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
509 | new_count); | |
07b82ea5 PA |
510 | table->sections_end = table->sections + new_count; |
511 | } | |
512 | else | |
a5b1fd27 | 513 | clear_section_table (table); |
07b82ea5 PA |
514 | |
515 | return old_count; | |
516 | } | |
517 | ||
c906108c SS |
518 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
519 | Returns 0 if OK, 1 on error. */ | |
520 | ||
521 | int | |
0542c86d PA |
522 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
523 | struct target_section **end) | |
c906108c SS |
524 | { |
525 | unsigned count; | |
526 | ||
527 | count = bfd_count_sections (some_bfd); | |
528 | if (*start) | |
b8c9b27d | 529 | xfree (* start); |
8d749320 | 530 | *start = XNEWVEC (struct target_section, count); |
c906108c | 531 | *end = *start; |
c5aa993b | 532 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 533 | if (*end > *start + count) |
3e43a32a MS |
534 | internal_error (__FILE__, __LINE__, |
535 | _("failed internal consistency check")); | |
c906108c SS |
536 | /* We could realloc the table, but it probably loses for most files. */ |
537 | return 0; | |
538 | } | |
07b82ea5 PA |
539 | |
540 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
541 | current set of target sections. */ | |
542 | ||
543 | void | |
046ac79f | 544 | add_target_sections (void *owner, |
ed9eebaf | 545 | struct target_section *sections, |
07b82ea5 PA |
546 | struct target_section *sections_end) |
547 | { | |
548 | int count; | |
549 | struct target_section_table *table = current_target_sections; | |
550 | ||
551 | count = sections_end - sections; | |
552 | ||
553 | if (count > 0) | |
554 | { | |
555 | int space = resize_section_table (table, count); | |
ed9eebaf | 556 | int i; |
d7f9d729 | 557 | |
ed9eebaf TT |
558 | for (i = 0; i < count; ++i) |
559 | { | |
560 | table->sections[space + i] = sections[i]; | |
046ac79f | 561 | table->sections[space + i].owner = owner; |
ed9eebaf | 562 | } |
07b82ea5 PA |
563 | |
564 | /* If these are the first file sections we can provide memory | |
565 | from, push the file_stratum target. */ | |
ab16fce8 TT |
566 | if (!target_is_pushed (&exec_ops)) |
567 | push_target (&exec_ops); | |
07b82ea5 PA |
568 | } |
569 | } | |
570 | ||
76ad5e1e NB |
571 | /* Add the sections of OBJFILE to the current set of target sections. */ |
572 | ||
573 | void | |
574 | add_target_sections_of_objfile (struct objfile *objfile) | |
575 | { | |
576 | struct target_section_table *table = current_target_sections; | |
577 | struct obj_section *osect; | |
578 | int space; | |
579 | unsigned count = 0; | |
580 | struct target_section *ts; | |
581 | ||
582 | if (objfile == NULL) | |
583 | return; | |
584 | ||
585 | /* Compute the number of sections to add. */ | |
586 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
587 | { | |
588 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
589 | continue; | |
590 | count++; | |
591 | } | |
592 | ||
593 | if (count == 0) | |
594 | return; | |
595 | ||
596 | space = resize_section_table (table, count); | |
597 | ||
598 | ts = table->sections + space; | |
599 | ||
600 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
601 | { | |
602 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
603 | continue; | |
604 | ||
605 | gdb_assert (ts < table->sections + space + count); | |
606 | ||
607 | ts->addr = obj_section_addr (osect); | |
608 | ts->endaddr = obj_section_endaddr (osect); | |
609 | ts->the_bfd_section = osect->the_bfd_section; | |
610 | ts->owner = (void *) objfile; | |
611 | ||
612 | ts++; | |
613 | } | |
614 | } | |
615 | ||
046ac79f JK |
616 | /* Remove all target sections owned by OWNER. |
617 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
618 | |
619 | void | |
046ac79f | 620 | remove_target_sections (void *owner) |
07b82ea5 PA |
621 | { |
622 | struct target_section *src, *dest; | |
07b82ea5 PA |
623 | struct target_section_table *table = current_target_sections; |
624 | ||
046ac79f JK |
625 | gdb_assert (owner != NULL); |
626 | ||
07b82ea5 PA |
627 | dest = table->sections; |
628 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 629 | if (src->owner != owner) |
07b82ea5 PA |
630 | { |
631 | /* Keep this section. */ | |
632 | if (dest < src) | |
633 | *dest = *src; | |
634 | dest++; | |
635 | } | |
636 | ||
637 | /* If we've dropped any sections, resize the section table. */ | |
638 | if (dest < src) | |
639 | { | |
640 | int old_count; | |
641 | ||
642 | old_count = resize_section_table (table, dest - src); | |
643 | ||
644 | /* If we don't have any more sections to read memory from, | |
645 | remove the file_stratum target from the stack. */ | |
646 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
647 | { |
648 | struct program_space *pspace; | |
649 | ||
650 | ALL_PSPACES (pspace) | |
651 | if (pspace->target_sections.sections | |
652 | != pspace->target_sections.sections_end) | |
653 | return; | |
654 | ||
655 | unpush_target (&exec_ops); | |
656 | } | |
07b82ea5 PA |
657 | } |
658 | } | |
659 | ||
c906108c | 660 | \f |
348f8c02 | 661 | |
1ca49d37 YQ |
662 | enum target_xfer_status |
663 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
664 | ULONGEST len, ULONGEST *xfered_len) | |
665 | { | |
666 | /* It's unduly pedantic to refuse to look at the executable for | |
667 | read-only pieces; so do the equivalent of readonly regions aka | |
668 | QTro packet. */ | |
669 | if (exec_bfd != NULL) | |
670 | { | |
671 | asection *s; | |
672 | bfd_size_type size; | |
673 | bfd_vma vma; | |
674 | ||
675 | for (s = exec_bfd->sections; s; s = s->next) | |
676 | { | |
677 | if ((s->flags & SEC_LOAD) == 0 | |
678 | || (s->flags & SEC_READONLY) == 0) | |
679 | continue; | |
680 | ||
681 | vma = s->vma; | |
682 | size = bfd_get_section_size (s); | |
683 | if (vma <= offset && offset < (vma + size)) | |
684 | { | |
685 | ULONGEST amt; | |
686 | ||
687 | amt = (vma + size) - offset; | |
688 | if (amt > len) | |
689 | amt = len; | |
690 | ||
691 | amt = bfd_get_section_contents (exec_bfd, s, | |
692 | readbuf, offset - vma, amt); | |
693 | ||
694 | if (amt == 0) | |
695 | return TARGET_XFER_EOF; | |
696 | else | |
697 | { | |
698 | *xfered_len = amt; | |
699 | return TARGET_XFER_OK; | |
700 | } | |
701 | } | |
702 | } | |
703 | } | |
704 | ||
705 | /* Indicate failure to find the requested memory block. */ | |
706 | return TARGET_XFER_E_IO; | |
707 | } | |
708 | ||
a79b1bc6 | 709 | /* Return all read-only memory ranges found in the target section |
5a2eb0ef | 710 | table defined by SECTIONS and SECTIONS_END, starting at (and |
a79b1bc6 | 711 | intersected with) MEMADDR for LEN bytes. */ |
5a2eb0ef | 712 | |
a79b1bc6 SM |
713 | static std::vector<mem_range> |
714 | section_table_available_memory (CORE_ADDR memaddr, ULONGEST len, | |
e6ca34fc PA |
715 | struct target_section *sections, |
716 | struct target_section *sections_end) | |
717 | { | |
a79b1bc6 | 718 | std::vector<mem_range> memory; |
e6ca34fc | 719 | |
a79b1bc6 | 720 | for (target_section *p = sections; p < sections_end; p++) |
e6ca34fc | 721 | { |
2b2848e2 DE |
722 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
723 | p->the_bfd_section) | |
e6ca34fc PA |
724 | & SEC_READONLY) == 0) |
725 | continue; | |
726 | ||
727 | /* Copy the meta-data, adjusted. */ | |
728 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
729 | { | |
730 | ULONGEST lo1, hi1, lo2, hi2; | |
e6ca34fc PA |
731 | |
732 | lo1 = memaddr; | |
733 | hi1 = memaddr + len; | |
734 | ||
735 | lo2 = p->addr; | |
736 | hi2 = p->endaddr; | |
737 | ||
a79b1bc6 SM |
738 | CORE_ADDR start = std::max (lo1, lo2); |
739 | int length = std::min (hi1, hi2) - start; | |
e6ca34fc | 740 | |
a79b1bc6 | 741 | memory.emplace_back (start, length); |
e6ca34fc PA |
742 | } |
743 | } | |
744 | ||
745 | return memory; | |
746 | } | |
747 | ||
1ee79381 YQ |
748 | enum target_xfer_status |
749 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
750 | ULONGEST len, ULONGEST *xfered_len) | |
751 | { | |
a79b1bc6 SM |
752 | target_section_table *table = target_get_section_table (&exec_ops); |
753 | std::vector<mem_range> available_memory | |
754 | = section_table_available_memory (offset, len, | |
755 | table->sections, table->sections_end); | |
1ee79381 | 756 | |
a79b1bc6 | 757 | normalize_mem_ranges (&available_memory); |
1ee79381 | 758 | |
a79b1bc6 | 759 | for (const mem_range &r : available_memory) |
1ee79381 | 760 | { |
a79b1bc6 | 761 | if (mem_ranges_overlap (r.start, r.length, offset, len)) |
1ee79381 YQ |
762 | { |
763 | CORE_ADDR end; | |
764 | enum target_xfer_status status; | |
765 | ||
766 | /* Get the intersection window. */ | |
a79b1bc6 | 767 | end = std::min<CORE_ADDR> (offset + len, r.start + r.length); |
1ee79381 YQ |
768 | |
769 | gdb_assert (end - offset <= len); | |
770 | ||
a79b1bc6 | 771 | if (offset >= r.start) |
1ee79381 YQ |
772 | status = exec_read_partial_read_only (readbuf, offset, |
773 | end - offset, | |
774 | xfered_len); | |
775 | else | |
776 | { | |
a79b1bc6 | 777 | *xfered_len = r.start - offset; |
bc113b4e | 778 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 | 779 | } |
1ee79381 YQ |
780 | return status; |
781 | } | |
782 | } | |
1ee79381 YQ |
783 | |
784 | *xfered_len = len; | |
bc113b4e | 785 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
786 | } |
787 | ||
9b409511 | 788 | enum target_xfer_status |
07b82ea5 | 789 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 790 | ULONGEST offset, ULONGEST len, |
9b409511 | 791 | ULONGEST *xfered_len, |
07b82ea5 PA |
792 | struct target_section *sections, |
793 | struct target_section *sections_end, | |
794 | const char *section_name) | |
c906108c | 795 | { |
020cc13c | 796 | int res; |
0542c86d | 797 | struct target_section *p; |
07b82ea5 PA |
798 | ULONGEST memaddr = offset; |
799 | ULONGEST memend = memaddr + len; | |
c906108c | 800 | |
b55e14c7 | 801 | if (len == 0) |
3e43a32a MS |
802 | internal_error (__FILE__, __LINE__, |
803 | _("failed internal consistency check")); | |
c906108c | 804 | |
348f8c02 | 805 | for (p = sections; p < sections_end; p++) |
c906108c | 806 | { |
2b2848e2 DE |
807 | struct bfd_section *asect = p->the_bfd_section; |
808 | bfd *abfd = asect->owner; | |
809 | ||
810 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 811 | continue; /* not the section we need. */ |
c906108c | 812 | if (memaddr >= p->addr) |
3db26b01 JB |
813 | { |
814 | if (memend <= p->endaddr) | |
815 | { | |
816 | /* Entire transfer is within this section. */ | |
07b82ea5 | 817 | if (writebuf) |
2b2848e2 | 818 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 819 | writebuf, memaddr - p->addr, |
85302095 AC |
820 | len); |
821 | else | |
2b2848e2 | 822 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 823 | readbuf, memaddr - p->addr, |
85302095 | 824 | len); |
9b409511 YQ |
825 | |
826 | if (res != 0) | |
827 | { | |
828 | *xfered_len = len; | |
829 | return TARGET_XFER_OK; | |
830 | } | |
831 | else | |
832 | return TARGET_XFER_EOF; | |
3db26b01 JB |
833 | } |
834 | else if (memaddr >= p->endaddr) | |
835 | { | |
836 | /* This section ends before the transfer starts. */ | |
837 | continue; | |
838 | } | |
839 | else | |
840 | { | |
841 | /* This section overlaps the transfer. Just do half. */ | |
842 | len = p->endaddr - memaddr; | |
07b82ea5 | 843 | if (writebuf) |
2b2848e2 | 844 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 845 | writebuf, memaddr - p->addr, |
85302095 AC |
846 | len); |
847 | else | |
2b2848e2 | 848 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 849 | readbuf, memaddr - p->addr, |
85302095 | 850 | len); |
9b409511 YQ |
851 | if (res != 0) |
852 | { | |
853 | *xfered_len = len; | |
854 | return TARGET_XFER_OK; | |
855 | } | |
856 | else | |
857 | return TARGET_XFER_EOF; | |
3db26b01 JB |
858 | } |
859 | } | |
c906108c SS |
860 | } |
861 | ||
9b409511 | 862 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 863 | } |
348f8c02 | 864 | |
f6ac5f3d PA |
865 | struct target_section_table * |
866 | exec_target::get_section_table () | |
348f8c02 | 867 | { |
07b82ea5 | 868 | return current_target_sections; |
348f8c02 PA |
869 | } |
870 | ||
f6ac5f3d PA |
871 | enum target_xfer_status |
872 | exec_target::xfer_partial (enum target_object object, | |
873 | const char *annex, gdb_byte *readbuf, | |
874 | const gdb_byte *writebuf, | |
875 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
348f8c02 | 876 | { |
f6ac5f3d | 877 | struct target_section_table *table = get_section_table (); |
07b82ea5 PA |
878 | |
879 | if (object == TARGET_OBJECT_MEMORY) | |
880 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 881 | offset, len, xfered_len, |
07b82ea5 PA |
882 | table->sections, |
883 | table->sections_end, | |
884 | NULL); | |
885 | else | |
2ed4b548 | 886 | return TARGET_XFER_E_IO; |
348f8c02 | 887 | } |
c906108c | 888 | \f |
c5aa993b | 889 | |
c906108c | 890 | void |
07b82ea5 | 891 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 892 | { |
5af949e3 | 893 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 894 | struct target_section *p; |
17a912b6 | 895 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 896 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 897 | |
c5aa993b | 898 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 899 | wrap_here (" "); |
a3f17187 | 900 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 901 | if (abfd == exec_bfd) |
51bee8e9 | 902 | { |
3e43a32a MS |
903 | /* gcc-3.4 does not like the initialization in |
904 | <p == t->sections_end>. */ | |
d904de5b | 905 | bfd_vma displacement = 0; |
2f1bdd26 | 906 | bfd_vma entry_point; |
51bee8e9 JK |
907 | |
908 | for (p = t->sections; p < t->sections_end; p++) | |
909 | { | |
2b2848e2 DE |
910 | struct bfd_section *psect = p->the_bfd_section; |
911 | bfd *pbfd = psect->owner; | |
51bee8e9 | 912 | |
2b2848e2 | 913 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
914 | != (SEC_ALLOC | SEC_LOAD)) |
915 | continue; | |
916 | ||
2b2848e2 DE |
917 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
918 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
919 | + bfd_get_section_size (psect))) | |
51bee8e9 | 920 | { |
2b2848e2 | 921 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
922 | break; |
923 | } | |
924 | } | |
925 | if (p == t->sections_end) | |
b37520b6 | 926 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 927 | bfd_get_filename (abfd)); |
51bee8e9 | 928 | |
2f1bdd26 MGD |
929 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
930 | bfd_get_start_address (abfd) | |
931 | + displacement); | |
51bee8e9 | 932 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 933 | paddress (gdbarch, entry_point)); |
51bee8e9 | 934 | } |
07b82ea5 | 935 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 936 | { |
2b2848e2 DE |
937 | struct bfd_section *psect = p->the_bfd_section; |
938 | bfd *pbfd = psect->owner; | |
939 | ||
bb599908 PH |
940 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
941 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
942 | |
943 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
944 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
945 | since most output will then be much wider than necessary. It | |
946 | may make sense to test the size of the file and choose the | |
947 | format string accordingly. */ | |
a3f17187 | 948 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
949 | if (info_verbose) |
950 | printf_filtered (" @ %s", | |
2b2848e2 DE |
951 | hex_string_custom (psect->filepos, 8)); |
952 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
953 | if (pbfd != abfd) | |
954 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
955 | printf_filtered ("\n"); |
956 | } | |
957 | } | |
958 | ||
f6ac5f3d PA |
959 | void |
960 | exec_target::files_info () | |
c906108c | 961 | { |
57008375 JK |
962 | if (exec_bfd) |
963 | print_section_info (current_target_sections, exec_bfd); | |
964 | else | |
965 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
966 | } |
967 | ||
968 | static void | |
0b39b52e | 969 | set_section_command (const char *args, int from_tty) |
c906108c | 970 | { |
0542c86d | 971 | struct target_section *p; |
0b39b52e | 972 | const char *secname; |
c906108c SS |
973 | unsigned seclen; |
974 | unsigned long secaddr; | |
975 | char secprint[100]; | |
976 | long offset; | |
07b82ea5 | 977 | struct target_section_table *table; |
c906108c SS |
978 | |
979 | if (args == 0) | |
8a3fe4f8 | 980 | error (_("Must specify section name and its virtual address")); |
c906108c | 981 | |
0963b4bd | 982 | /* Parse out section name. */ |
c5aa993b | 983 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
984 | seclen = args - secname; |
985 | ||
0963b4bd | 986 | /* Parse out new virtual address. */ |
c906108c SS |
987 | secaddr = parse_and_eval_address (args); |
988 | ||
07b82ea5 PA |
989 | table = current_target_sections; |
990 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 991 | { |
57008375 | 992 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 993 | p->the_bfd_section), seclen) |
57008375 | 994 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
995 | { |
996 | offset = secaddr - p->addr; | |
997 | p->addr += offset; | |
998 | p->endaddr += offset; | |
999 | if (from_tty) | |
f6ac5f3d | 1000 | exec_ops.files_info (); |
c5aa993b JM |
1001 | return; |
1002 | } | |
c906108c | 1003 | } |
c906108c SS |
1004 | if (seclen >= sizeof (secprint)) |
1005 | seclen = sizeof (secprint) - 1; | |
1006 | strncpy (secprint, secname, seclen); | |
1007 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1008 | error (_("Section %s not found"), secprint); |
c906108c SS |
1009 | } |
1010 | ||
30510692 DJ |
1011 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1012 | it to ADDRESS. */ | |
c1bd25fd DJ |
1013 | |
1014 | void | |
1015 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1016 | { | |
0542c86d | 1017 | struct target_section *p; |
07b82ea5 | 1018 | struct target_section_table *table; |
c1bd25fd | 1019 | |
07b82ea5 PA |
1020 | table = current_target_sections; |
1021 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1022 | { |
2b2848e2 | 1023 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1024 | && index == p->the_bfd_section->index) |
c1bd25fd | 1025 | { |
30510692 | 1026 | p->endaddr += address - p->addr; |
c1bd25fd | 1027 | p->addr = address; |
c1bd25fd DJ |
1028 | } |
1029 | } | |
1030 | } | |
1031 | ||
57810aa7 | 1032 | bool |
f6ac5f3d | 1033 | exec_target::has_memory () |
c35b1492 PA |
1034 | { |
1035 | /* We can provide memory if we have any file/target sections to read | |
1036 | from. */ | |
1037 | return (current_target_sections->sections | |
1038 | != current_target_sections->sections_end); | |
1039 | } | |
1040 | ||
f6ac5f3d PA |
1041 | char * |
1042 | exec_target::make_corefile_notes (bfd *obfd, int *note_size) | |
83814951 TT |
1043 | { |
1044 | error (_("Can't create a corefile")); | |
1045 | } | |
be4d1333 | 1046 | |
f6ac5f3d PA |
1047 | int |
1048 | exec_target::find_memory_regions (find_memory_region_ftype func, void *data) | |
c906108c | 1049 | { |
f6ac5f3d | 1050 | return objfile_find_memory_regions (this, func, data); |
c906108c SS |
1051 | } |
1052 | ||
1053 | void | |
fba45db2 | 1054 | _initialize_exec (void) |
c906108c SS |
1055 | { |
1056 | struct cmd_list_element *c; | |
1057 | ||
c906108c SS |
1058 | if (!dbx_commands) |
1059 | { | |
1a966eab AC |
1060 | c = add_cmd ("file", class_files, file_command, _("\ |
1061 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1062 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1063 | and it is the program executed when you use the `run' command.\n\ | |
1064 | If FILE cannot be found as specified, your execution directory path\n\ | |
1065 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1066 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1067 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1068 | } |
1069 | ||
1a966eab AC |
1070 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1071 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1072 | If FILE cannot be found as specified, your execution directory path\n\ |
1073 | is searched for a command of that name.\n\ | |
1a966eab | 1074 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1075 | set_cmd_completer (c, filename_completer); |
c906108c | 1076 | |
1bedd215 AC |
1077 | add_com ("section", class_files, set_section_command, _("\ |
1078 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1079 | This can be used if the exec file does not contain section addresses,\n\ |
1080 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1081 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1082 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1083 | |
5bf193a2 AC |
1084 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1085 | Set writing into executable and core files."), _("\ | |
1086 | Show writing into executable and core files."), NULL, | |
1087 | NULL, | |
920d2a44 | 1088 | show_write_files, |
5bf193a2 | 1089 | &setlist, &showlist); |
c5aa993b | 1090 | |
d9f719f1 | 1091 | add_target (exec_target_info, exec_target_open, filename_completer); |
c906108c | 1092 | } |