Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
618f726f | 3 | Copyright (C) 1988-2016 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 TT |
115 | struct program_space *ss; |
116 | struct cleanup *old_chain; | |
6c95b8df | 117 | |
ab16fce8 TT |
118 | old_chain = save_current_program_space (); |
119 | ALL_PSPACES (ss) | |
6c95b8df | 120 | { |
ab16fce8 TT |
121 | set_current_program_space (ss); |
122 | clear_section_table (current_target_sections); | |
123 | exec_close (); | |
6c95b8df | 124 | } |
ab16fce8 TT |
125 | |
126 | do_cleanups (old_chain); | |
c906108c SS |
127 | } |
128 | ||
1adeb98a FN |
129 | void |
130 | exec_file_clear (int from_tty) | |
131 | { | |
132 | /* Remove exec file. */ | |
6c95b8df | 133 | exec_close (); |
1adeb98a FN |
134 | |
135 | if (from_tty) | |
a3f17187 | 136 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
137 | } |
138 | ||
57d1de9c LM |
139 | /* Returns non-zero if exceptions E1 and E2 are equal. Returns zero |
140 | otherwise. */ | |
141 | ||
142 | static int | |
143 | exception_print_same (struct gdb_exception e1, struct gdb_exception e2) | |
144 | { | |
145 | const char *msg1 = e1.message; | |
146 | const char *msg2 = e2.message; | |
147 | ||
148 | if (msg1 == NULL) | |
149 | msg1 = ""; | |
150 | if (msg2 == NULL) | |
151 | msg2 = ""; | |
152 | ||
153 | return (e1.reason == e2.reason | |
154 | && e1.error == e2.error | |
155 | && strcmp (e1.message, e2.message) == 0); | |
156 | } | |
157 | ||
a10de604 GB |
158 | /* See gdbcore.h. */ |
159 | ||
160 | void | |
bb805577 | 161 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) |
a10de604 GB |
162 | { |
163 | char *exec_file, *full_exec_path = NULL; | |
88178e82 | 164 | struct cleanup *old_chain; |
57d1de9c | 165 | struct gdb_exception prev_err = exception_none; |
a10de604 GB |
166 | |
167 | /* Do nothing if we already have an executable filename. */ | |
168 | exec_file = (char *) get_exec_file (0); | |
169 | if (exec_file != NULL) | |
170 | return; | |
171 | ||
172 | /* Try to determine a filename from the process itself. */ | |
173 | exec_file = target_pid_to_exec_file (pid); | |
174 | if (exec_file == NULL) | |
fef3cb9f JK |
175 | { |
176 | warning (_("No executable has been specified and target does not " | |
177 | "support\n" | |
178 | "determining executable automatically. " | |
179 | "Try using the \"file\" command.")); | |
180 | return; | |
181 | } | |
a10de604 | 182 | |
a9a5a3d1 GB |
183 | /* If gdb_sysroot is not empty and the discovered filename |
184 | is absolute then prefix the filename with gdb_sysroot. */ | |
a3be80c3 | 185 | if (*gdb_sysroot != '\0' && IS_ABSOLUTE_PATH (exec_file)) |
bf74e428 GB |
186 | { |
187 | full_exec_path = exec_file_find (exec_file, NULL); | |
188 | if (full_exec_path == NULL) | |
189 | return; | |
190 | } | |
191 | else | |
a9a5a3d1 GB |
192 | { |
193 | /* It's possible we don't have a full path, but rather just a | |
194 | filename. Some targets, such as HP-UX, don't provide the | |
195 | full path, sigh. | |
196 | ||
197 | Attempt to qualify the filename against the source path. | |
198 | (If that fails, we'll just fall back on the original | |
199 | filename. Not much more we can do...) */ | |
200 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
201 | full_exec_path = xstrdup (exec_file); | |
202 | } | |
a10de604 | 203 | |
88178e82 | 204 | old_chain = make_cleanup (xfree, full_exec_path); |
57d1de9c LM |
205 | make_cleanup (free_current_contents, &prev_err.message); |
206 | ||
207 | /* exec_file_attach and symbol_file_add_main may throw an error if the file | |
208 | cannot be opened either locally or remotely. | |
209 | ||
210 | This happens for example, when the file is first found in the local | |
211 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
212 | exist in the target filesystem, or when the file does exist, but | |
213 | is not readable. | |
88178e82 | 214 | |
57d1de9c LM |
215 | Even without a symbol file, the remote-based debugging session should |
216 | continue normally instead of ending abruptly. Hence we catch thrown | |
217 | errors/exceptions in the following code. */ | |
218 | TRY | |
219 | { | |
220 | exec_file_attach (full_exec_path, from_tty); | |
221 | } | |
222 | CATCH (err, RETURN_MASK_ERROR) | |
223 | { | |
224 | if (err.message != NULL) | |
225 | warning ("%s", err.message); | |
226 | ||
227 | prev_err = err; | |
228 | ||
229 | /* Save message so it doesn't get trashed by the catch below. */ | |
230 | prev_err.message = xstrdup (err.message); | |
231 | } | |
232 | END_CATCH | |
233 | ||
234 | TRY | |
235 | { | |
bb805577 JK |
236 | if (defer_bp_reset) |
237 | current_inferior ()->symfile_flags |= SYMFILE_DEFER_BP_RESET; | |
57d1de9c LM |
238 | symbol_file_add_main (full_exec_path, from_tty); |
239 | } | |
240 | CATCH (err, RETURN_MASK_ERROR) | |
241 | { | |
242 | if (!exception_print_same (prev_err, err)) | |
243 | warning ("%s", err.message); | |
244 | } | |
245 | END_CATCH | |
bb805577 | 246 | current_inferior ()->symfile_flags &= ~SYMFILE_DEFER_BP_RESET; |
88178e82 GB |
247 | |
248 | do_cleanups (old_chain); | |
a10de604 GB |
249 | } |
250 | ||
907083d1 | 251 | /* Set FILENAME as the new exec file. |
c906108c | 252 | |
c5aa993b JM |
253 | This function is intended to be behave essentially the same |
254 | as exec_file_command, except that the latter will detect when | |
255 | a target is being debugged, and will ask the user whether it | |
256 | should be shut down first. (If the answer is "no", then the | |
257 | new file is ignored.) | |
c906108c | 258 | |
c5aa993b JM |
259 | This file is used by exec_file_command, to do the work of opening |
260 | and processing the exec file after any prompting has happened. | |
c906108c | 261 | |
c5aa993b JM |
262 | And, it is used by child_attach, when the attach command was |
263 | given a pid but not a exec pathname, and the attach command could | |
264 | figure out the pathname from the pid. (In this case, we shouldn't | |
265 | ask the user whether the current target should be shut down -- | |
907083d1 | 266 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
267 | |
268 | void | |
5f08566b | 269 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 270 | { |
9b333ba3 TT |
271 | struct cleanup *cleanups; |
272 | ||
273 | /* First, acquire a reference to the current exec_bfd. We release | |
274 | this at the end of the function; but acquiring it now lets the | |
275 | BFD cache return it if this call refers to the same file. */ | |
276 | gdb_bfd_ref (exec_bfd); | |
277 | cleanups = make_cleanup_bfd_unref (exec_bfd); | |
278 | ||
c906108c | 279 | /* Remove any previous exec file. */ |
6c95b8df | 280 | exec_close (); |
c906108c SS |
281 | |
282 | /* Now open and digest the file the user requested, if any. */ | |
283 | ||
1adeb98a FN |
284 | if (!filename) |
285 | { | |
286 | if (from_tty) | |
a3f17187 | 287 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
288 | |
289 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
290 | } |
291 | else | |
c906108c | 292 | { |
64c0b5de | 293 | int load_via_target = 0; |
1f0c4988 | 294 | char *scratch_pathname, *canonical_pathname; |
c906108c | 295 | int scratch_chan; |
07b82ea5 | 296 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 297 | char **matching; |
c5aa993b | 298 | |
64c0b5de GB |
299 | if (is_target_filename (filename)) |
300 | { | |
301 | if (target_filesystem_is_local ()) | |
302 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
303 | else | |
304 | load_via_target = 1; | |
305 | } | |
306 | ||
307 | if (load_via_target) | |
c5aa993b | 308 | { |
64c0b5de GB |
309 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
310 | if (write_files) | |
311 | warning (_("writing into executable files is " | |
312 | "not supported for %s sysroots"), | |
313 | TARGET_SYSROOT_PREFIX); | |
314 | ||
315 | scratch_pathname = xstrdup (filename); | |
316 | make_cleanup (xfree, scratch_pathname); | |
317 | ||
318 | scratch_chan = -1; | |
d7f9d729 | 319 | |
64c0b5de | 320 | canonical_pathname = scratch_pathname; |
c5aa993b | 321 | } |
64c0b5de GB |
322 | else |
323 | { | |
324 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
325 | filename, write_files ? | |
326 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
327 | &scratch_pathname); | |
328 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) | |
329 | if (scratch_chan < 0) | |
330 | { | |
0ae1c716 | 331 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
332 | |
333 | strcat (strcpy (exename, filename), ".exe"); | |
334 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
335 | exename, write_files ? | |
336 | O_RDWR | O_BINARY | |
337 | : O_RDONLY | O_BINARY, | |
338 | &scratch_pathname); | |
339 | } | |
c906108c | 340 | #endif |
64c0b5de GB |
341 | if (scratch_chan < 0) |
342 | perror_with_name (filename); | |
a4453b7e | 343 | |
64c0b5de | 344 | make_cleanup (xfree, scratch_pathname); |
a4453b7e | 345 | |
64c0b5de GB |
346 | /* gdb_bfd_open (and its variants) prefers canonicalized |
347 | pathname for better BFD caching. */ | |
348 | canonical_pathname = gdb_realpath (scratch_pathname); | |
349 | make_cleanup (xfree, canonical_pathname); | |
350 | } | |
1f0c4988 | 351 | |
64c0b5de | 352 | if (write_files && !load_via_target) |
1f0c4988 | 353 | exec_bfd = gdb_bfd_fopen (canonical_pathname, gnutarget, |
1c00ec6b TT |
354 | FOPEN_RUB, scratch_chan); |
355 | else | |
1f0c4988 | 356 | exec_bfd = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
c906108c SS |
357 | |
358 | if (!exec_bfd) | |
9fe4a216 | 359 | { |
d5131498 | 360 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
361 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
362 | } | |
c906108c | 363 | |
64c0b5de GB |
364 | /* gdb_realpath_keepfile resolves symlinks on the local |
365 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 366 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
367 | if (load_via_target) |
368 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
369 | else | |
370 | exec_filename = gdb_realpath_keepfile (scratch_pathname); | |
1f0c4988 | 371 | |
d18b8b7a | 372 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
373 | { |
374 | /* Make sure to close exec_bfd, or else "run" might try to use | |
375 | it. */ | |
6c95b8df | 376 | exec_close (); |
8a3fe4f8 | 377 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
378 | scratch_pathname, |
379 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
380 | } |
381 | ||
07b82ea5 | 382 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
383 | { |
384 | /* Make sure to close exec_bfd, or else "run" might try to use | |
385 | it. */ | |
6c95b8df | 386 | exec_close (); |
8a3fe4f8 | 387 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
388 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
389 | } | |
390 | ||
c04ea773 DJ |
391 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
392 | ||
c906108c SS |
393 | validate_files (); |
394 | ||
395 | set_gdbarch_from_file (exec_bfd); | |
396 | ||
07b82ea5 | 397 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
398 | list of sections. This possibly pushes the exec_ops |
399 | target. */ | |
ed9eebaf | 400 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 401 | xfree (sections); |
c906108c SS |
402 | |
403 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
404 | if (deprecated_exec_file_display_hook) |
405 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 406 | } |
9b333ba3 TT |
407 | |
408 | do_cleanups (cleanups); | |
409 | ||
ce7d4522 | 410 | bfd_cache_close_all (); |
781b42b0 | 411 | observer_notify_executable_changed (); |
c906108c SS |
412 | } |
413 | ||
414 | /* Process the first arg in ARGS as the new exec file. | |
415 | ||
c5aa993b JM |
416 | Note that we have to explicitly ignore additional args, since we can |
417 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
418 | which can take multiple args. |
419 | ||
0963b4bd | 420 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 421 | |
1adeb98a | 422 | static void |
fba45db2 | 423 | exec_file_command (char *args, int from_tty) |
c906108c | 424 | { |
1adeb98a FN |
425 | char **argv; |
426 | char *filename; | |
4c42eaff DJ |
427 | |
428 | if (from_tty && target_has_execution | |
429 | && !query (_("A program is being debugged already.\n" | |
430 | "Are you sure you want to change the file? "))) | |
431 | error (_("File not changed.")); | |
1adeb98a FN |
432 | |
433 | if (args) | |
434 | { | |
f7545552 TT |
435 | struct cleanup *cleanups; |
436 | ||
1adeb98a FN |
437 | /* Scan through the args and pick up the first non option arg |
438 | as the filename. */ | |
439 | ||
d1a41061 | 440 | argv = gdb_buildargv (args); |
f7545552 | 441 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
442 | |
443 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
444 | {; | |
445 | } | |
446 | if (*argv == NULL) | |
8a3fe4f8 | 447 | error (_("No executable file name was specified")); |
1adeb98a FN |
448 | |
449 | filename = tilde_expand (*argv); | |
450 | make_cleanup (xfree, filename); | |
451 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
452 | |
453 | do_cleanups (cleanups); | |
1adeb98a FN |
454 | } |
455 | else | |
456 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
457 | } |
458 | ||
0963b4bd | 459 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
460 | What a novelty. Why did GDB go through four major releases before this |
461 | command was added? */ | |
462 | ||
463 | static void | |
fba45db2 | 464 | file_command (char *arg, int from_tty) |
c906108c SS |
465 | { |
466 | /* FIXME, if we lose on reading the symbol file, we should revert | |
467 | the exec file, but that's rough. */ | |
468 | exec_file_command (arg, from_tty); | |
469 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
470 | if (deprecated_file_changed_hook) |
471 | deprecated_file_changed_hook (arg); | |
c906108c | 472 | } |
c906108c | 473 | \f |
c5aa993b | 474 | |
0963b4bd | 475 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
476 | table_pp_char is a char * to get it through bfd_map_over_sections; |
477 | we cast it back to its proper type. */ | |
478 | ||
479 | static void | |
7be0c536 AC |
480 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
481 | void *table_pp_char) | |
c906108c | 482 | { |
0542c86d | 483 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
484 | flagword aflag; |
485 | ||
2b2848e2 DE |
486 | gdb_assert (abfd == asect->owner); |
487 | ||
0f5d55d8 JB |
488 | /* Check the section flags, but do not discard zero-length sections, since |
489 | some symbols may still be attached to this section. For instance, we | |
490 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
491 | section to which a symbol named "_end" was attached. The address | |
492 | of this symbol still needs to be relocated. */ | |
c906108c SS |
493 | aflag = bfd_get_section_flags (abfd, asect); |
494 | if (!(aflag & SEC_ALLOC)) | |
495 | return; | |
0f5d55d8 | 496 | |
046ac79f | 497 | (*table_pp)->owner = NULL; |
c906108c SS |
498 | (*table_pp)->the_bfd_section = asect; |
499 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
500 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
501 | (*table_pp)++; | |
502 | } | |
503 | ||
a5b1fd27 DE |
504 | /* See exec.h. */ |
505 | ||
506 | void | |
507 | clear_section_table (struct target_section_table *table) | |
508 | { | |
509 | xfree (table->sections); | |
510 | table->sections = table->sections_end = NULL; | |
511 | } | |
512 | ||
513 | /* Resize section table TABLE by ADJUSTMENT. | |
514 | ADJUSTMENT may be negative, in which case the caller must have already | |
515 | removed the sections being deleted. | |
516 | Returns the old size. */ | |
517 | ||
518 | static int | |
519 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 520 | { |
07b82ea5 PA |
521 | int old_count; |
522 | int new_count; | |
523 | ||
07b82ea5 PA |
524 | old_count = table->sections_end - table->sections; |
525 | ||
a5b1fd27 | 526 | new_count = adjustment + old_count; |
07b82ea5 PA |
527 | |
528 | if (new_count) | |
529 | { | |
224c3ddb SM |
530 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
531 | new_count); | |
07b82ea5 PA |
532 | table->sections_end = table->sections + new_count; |
533 | } | |
534 | else | |
a5b1fd27 | 535 | clear_section_table (table); |
07b82ea5 PA |
536 | |
537 | return old_count; | |
538 | } | |
539 | ||
c906108c SS |
540 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
541 | Returns 0 if OK, 1 on error. */ | |
542 | ||
543 | int | |
0542c86d PA |
544 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
545 | struct target_section **end) | |
c906108c SS |
546 | { |
547 | unsigned count; | |
548 | ||
549 | count = bfd_count_sections (some_bfd); | |
550 | if (*start) | |
b8c9b27d | 551 | xfree (* start); |
8d749320 | 552 | *start = XNEWVEC (struct target_section, count); |
c906108c | 553 | *end = *start; |
c5aa993b | 554 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 555 | if (*end > *start + count) |
3e43a32a MS |
556 | internal_error (__FILE__, __LINE__, |
557 | _("failed internal consistency check")); | |
c906108c SS |
558 | /* We could realloc the table, but it probably loses for most files. */ |
559 | return 0; | |
560 | } | |
07b82ea5 PA |
561 | |
562 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
563 | current set of target sections. */ | |
564 | ||
565 | void | |
046ac79f | 566 | add_target_sections (void *owner, |
ed9eebaf | 567 | struct target_section *sections, |
07b82ea5 PA |
568 | struct target_section *sections_end) |
569 | { | |
570 | int count; | |
571 | struct target_section_table *table = current_target_sections; | |
572 | ||
573 | count = sections_end - sections; | |
574 | ||
575 | if (count > 0) | |
576 | { | |
577 | int space = resize_section_table (table, count); | |
ed9eebaf | 578 | int i; |
d7f9d729 | 579 | |
ed9eebaf TT |
580 | for (i = 0; i < count; ++i) |
581 | { | |
582 | table->sections[space + i] = sections[i]; | |
046ac79f | 583 | table->sections[space + i].owner = owner; |
ed9eebaf | 584 | } |
07b82ea5 PA |
585 | |
586 | /* If these are the first file sections we can provide memory | |
587 | from, push the file_stratum target. */ | |
ab16fce8 TT |
588 | if (!target_is_pushed (&exec_ops)) |
589 | push_target (&exec_ops); | |
07b82ea5 PA |
590 | } |
591 | } | |
592 | ||
76ad5e1e NB |
593 | /* Add the sections of OBJFILE to the current set of target sections. */ |
594 | ||
595 | void | |
596 | add_target_sections_of_objfile (struct objfile *objfile) | |
597 | { | |
598 | struct target_section_table *table = current_target_sections; | |
599 | struct obj_section *osect; | |
600 | int space; | |
601 | unsigned count = 0; | |
602 | struct target_section *ts; | |
603 | ||
604 | if (objfile == NULL) | |
605 | return; | |
606 | ||
607 | /* Compute the number of sections to add. */ | |
608 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
609 | { | |
610 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
611 | continue; | |
612 | count++; | |
613 | } | |
614 | ||
615 | if (count == 0) | |
616 | return; | |
617 | ||
618 | space = resize_section_table (table, count); | |
619 | ||
620 | ts = table->sections + space; | |
621 | ||
622 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
623 | { | |
624 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
625 | continue; | |
626 | ||
627 | gdb_assert (ts < table->sections + space + count); | |
628 | ||
629 | ts->addr = obj_section_addr (osect); | |
630 | ts->endaddr = obj_section_endaddr (osect); | |
631 | ts->the_bfd_section = osect->the_bfd_section; | |
632 | ts->owner = (void *) objfile; | |
633 | ||
634 | ts++; | |
635 | } | |
636 | } | |
637 | ||
046ac79f JK |
638 | /* Remove all target sections owned by OWNER. |
639 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
640 | |
641 | void | |
046ac79f | 642 | remove_target_sections (void *owner) |
07b82ea5 PA |
643 | { |
644 | struct target_section *src, *dest; | |
07b82ea5 PA |
645 | struct target_section_table *table = current_target_sections; |
646 | ||
046ac79f JK |
647 | gdb_assert (owner != NULL); |
648 | ||
07b82ea5 PA |
649 | dest = table->sections; |
650 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 651 | if (src->owner != owner) |
07b82ea5 PA |
652 | { |
653 | /* Keep this section. */ | |
654 | if (dest < src) | |
655 | *dest = *src; | |
656 | dest++; | |
657 | } | |
658 | ||
659 | /* If we've dropped any sections, resize the section table. */ | |
660 | if (dest < src) | |
661 | { | |
662 | int old_count; | |
663 | ||
664 | old_count = resize_section_table (table, dest - src); | |
665 | ||
666 | /* If we don't have any more sections to read memory from, | |
667 | remove the file_stratum target from the stack. */ | |
668 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
669 | { |
670 | struct program_space *pspace; | |
671 | ||
672 | ALL_PSPACES (pspace) | |
673 | if (pspace->target_sections.sections | |
674 | != pspace->target_sections.sections_end) | |
675 | return; | |
676 | ||
677 | unpush_target (&exec_ops); | |
678 | } | |
07b82ea5 PA |
679 | } |
680 | } | |
681 | ||
c906108c | 682 | \f |
348f8c02 | 683 | |
1ca49d37 YQ |
684 | enum target_xfer_status |
685 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
686 | ULONGEST len, ULONGEST *xfered_len) | |
687 | { | |
688 | /* It's unduly pedantic to refuse to look at the executable for | |
689 | read-only pieces; so do the equivalent of readonly regions aka | |
690 | QTro packet. */ | |
691 | if (exec_bfd != NULL) | |
692 | { | |
693 | asection *s; | |
694 | bfd_size_type size; | |
695 | bfd_vma vma; | |
696 | ||
697 | for (s = exec_bfd->sections; s; s = s->next) | |
698 | { | |
699 | if ((s->flags & SEC_LOAD) == 0 | |
700 | || (s->flags & SEC_READONLY) == 0) | |
701 | continue; | |
702 | ||
703 | vma = s->vma; | |
704 | size = bfd_get_section_size (s); | |
705 | if (vma <= offset && offset < (vma + size)) | |
706 | { | |
707 | ULONGEST amt; | |
708 | ||
709 | amt = (vma + size) - offset; | |
710 | if (amt > len) | |
711 | amt = len; | |
712 | ||
713 | amt = bfd_get_section_contents (exec_bfd, s, | |
714 | readbuf, offset - vma, amt); | |
715 | ||
716 | if (amt == 0) | |
717 | return TARGET_XFER_EOF; | |
718 | else | |
719 | { | |
720 | *xfered_len = amt; | |
721 | return TARGET_XFER_OK; | |
722 | } | |
723 | } | |
724 | } | |
725 | } | |
726 | ||
727 | /* Indicate failure to find the requested memory block. */ | |
728 | return TARGET_XFER_E_IO; | |
729 | } | |
730 | ||
5a2eb0ef YQ |
731 | /* Appends all read-only memory ranges found in the target section |
732 | table defined by SECTIONS and SECTIONS_END, starting at (and | |
733 | intersected with) MEMADDR for LEN bytes. Returns the augmented | |
734 | VEC. */ | |
735 | ||
736 | static VEC(mem_range_s) * | |
e6ca34fc | 737 | section_table_available_memory (VEC(mem_range_s) *memory, |
424447ee | 738 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
739 | struct target_section *sections, |
740 | struct target_section *sections_end) | |
741 | { | |
742 | struct target_section *p; | |
e6ca34fc PA |
743 | |
744 | for (p = sections; p < sections_end; p++) | |
745 | { | |
2b2848e2 DE |
746 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
747 | p->the_bfd_section) | |
e6ca34fc PA |
748 | & SEC_READONLY) == 0) |
749 | continue; | |
750 | ||
751 | /* Copy the meta-data, adjusted. */ | |
752 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
753 | { | |
754 | ULONGEST lo1, hi1, lo2, hi2; | |
755 | struct mem_range *r; | |
756 | ||
757 | lo1 = memaddr; | |
758 | hi1 = memaddr + len; | |
759 | ||
760 | lo2 = p->addr; | |
761 | hi2 = p->endaddr; | |
762 | ||
763 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
764 | ||
325fac50 PA |
765 | r->start = std::max (lo1, lo2); |
766 | r->length = std::min (hi1, hi2) - r->start; | |
e6ca34fc PA |
767 | } |
768 | } | |
769 | ||
770 | return memory; | |
771 | } | |
772 | ||
1ee79381 YQ |
773 | enum target_xfer_status |
774 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
775 | ULONGEST len, ULONGEST *xfered_len) | |
776 | { | |
777 | VEC(mem_range_s) *available_memory = NULL; | |
778 | struct target_section_table *table; | |
779 | struct cleanup *old_chain; | |
780 | mem_range_s *r; | |
781 | int i; | |
782 | ||
783 | table = target_get_section_table (&exec_ops); | |
784 | available_memory = section_table_available_memory (available_memory, | |
785 | offset, len, | |
786 | table->sections, | |
787 | table->sections_end); | |
788 | ||
789 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), | |
790 | &available_memory); | |
791 | ||
792 | normalize_mem_ranges (available_memory); | |
793 | ||
794 | for (i = 0; | |
795 | VEC_iterate (mem_range_s, available_memory, i, r); | |
796 | i++) | |
797 | { | |
798 | if (mem_ranges_overlap (r->start, r->length, offset, len)) | |
799 | { | |
800 | CORE_ADDR end; | |
801 | enum target_xfer_status status; | |
802 | ||
803 | /* Get the intersection window. */ | |
768adc05 | 804 | end = std::min<CORE_ADDR> (offset + len, r->start + r->length); |
1ee79381 YQ |
805 | |
806 | gdb_assert (end - offset <= len); | |
807 | ||
808 | if (offset >= r->start) | |
809 | status = exec_read_partial_read_only (readbuf, offset, | |
810 | end - offset, | |
811 | xfered_len); | |
812 | else | |
813 | { | |
814 | *xfered_len = r->start - offset; | |
bc113b4e | 815 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
816 | } |
817 | do_cleanups (old_chain); | |
818 | return status; | |
819 | } | |
820 | } | |
821 | do_cleanups (old_chain); | |
822 | ||
823 | *xfered_len = len; | |
bc113b4e | 824 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
825 | } |
826 | ||
9b409511 | 827 | enum target_xfer_status |
07b82ea5 | 828 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 829 | ULONGEST offset, ULONGEST len, |
9b409511 | 830 | ULONGEST *xfered_len, |
07b82ea5 PA |
831 | struct target_section *sections, |
832 | struct target_section *sections_end, | |
833 | const char *section_name) | |
c906108c | 834 | { |
020cc13c | 835 | int res; |
0542c86d | 836 | struct target_section *p; |
07b82ea5 PA |
837 | ULONGEST memaddr = offset; |
838 | ULONGEST memend = memaddr + len; | |
c906108c | 839 | |
b55e14c7 | 840 | if (len == 0) |
3e43a32a MS |
841 | internal_error (__FILE__, __LINE__, |
842 | _("failed internal consistency check")); | |
c906108c | 843 | |
348f8c02 | 844 | for (p = sections; p < sections_end; p++) |
c906108c | 845 | { |
2b2848e2 DE |
846 | struct bfd_section *asect = p->the_bfd_section; |
847 | bfd *abfd = asect->owner; | |
848 | ||
849 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 850 | continue; /* not the section we need. */ |
c906108c | 851 | if (memaddr >= p->addr) |
3db26b01 JB |
852 | { |
853 | if (memend <= p->endaddr) | |
854 | { | |
855 | /* Entire transfer is within this section. */ | |
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 | |
865 | if (res != 0) | |
866 | { | |
867 | *xfered_len = len; | |
868 | return TARGET_XFER_OK; | |
869 | } | |
870 | else | |
871 | return TARGET_XFER_EOF; | |
3db26b01 JB |
872 | } |
873 | else if (memaddr >= p->endaddr) | |
874 | { | |
875 | /* This section ends before the transfer starts. */ | |
876 | continue; | |
877 | } | |
878 | else | |
879 | { | |
880 | /* This section overlaps the transfer. Just do half. */ | |
881 | len = p->endaddr - memaddr; | |
07b82ea5 | 882 | if (writebuf) |
2b2848e2 | 883 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 884 | writebuf, memaddr - p->addr, |
85302095 AC |
885 | len); |
886 | else | |
2b2848e2 | 887 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 888 | readbuf, memaddr - p->addr, |
85302095 | 889 | len); |
9b409511 YQ |
890 | if (res != 0) |
891 | { | |
892 | *xfered_len = len; | |
893 | return TARGET_XFER_OK; | |
894 | } | |
895 | else | |
896 | return TARGET_XFER_EOF; | |
3db26b01 JB |
897 | } |
898 | } | |
c906108c SS |
899 | } |
900 | ||
9b409511 | 901 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 902 | } |
348f8c02 | 903 | |
70221824 | 904 | static struct target_section_table * |
07b82ea5 | 905 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 906 | { |
07b82ea5 | 907 | return current_target_sections; |
348f8c02 PA |
908 | } |
909 | ||
9b409511 | 910 | static enum target_xfer_status |
07b82ea5 PA |
911 | exec_xfer_partial (struct target_ops *ops, enum target_object object, |
912 | const char *annex, gdb_byte *readbuf, | |
913 | const gdb_byte *writebuf, | |
9b409511 | 914 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
348f8c02 | 915 | { |
07b82ea5 PA |
916 | struct target_section_table *table = target_get_section_table (ops); |
917 | ||
918 | if (object == TARGET_OBJECT_MEMORY) | |
919 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 920 | offset, len, xfered_len, |
07b82ea5 PA |
921 | table->sections, |
922 | table->sections_end, | |
923 | NULL); | |
924 | else | |
2ed4b548 | 925 | return TARGET_XFER_E_IO; |
348f8c02 | 926 | } |
c906108c | 927 | \f |
c5aa993b | 928 | |
c906108c | 929 | void |
07b82ea5 | 930 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 931 | { |
5af949e3 | 932 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 933 | struct target_section *p; |
17a912b6 | 934 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 935 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 936 | |
c5aa993b | 937 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 938 | wrap_here (" "); |
a3f17187 | 939 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 940 | if (abfd == exec_bfd) |
51bee8e9 | 941 | { |
3e43a32a MS |
942 | /* gcc-3.4 does not like the initialization in |
943 | <p == t->sections_end>. */ | |
d904de5b | 944 | bfd_vma displacement = 0; |
2f1bdd26 | 945 | bfd_vma entry_point; |
51bee8e9 JK |
946 | |
947 | for (p = t->sections; p < t->sections_end; p++) | |
948 | { | |
2b2848e2 DE |
949 | struct bfd_section *psect = p->the_bfd_section; |
950 | bfd *pbfd = psect->owner; | |
51bee8e9 | 951 | |
2b2848e2 | 952 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
953 | != (SEC_ALLOC | SEC_LOAD)) |
954 | continue; | |
955 | ||
2b2848e2 DE |
956 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
957 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
958 | + bfd_get_section_size (psect))) | |
51bee8e9 | 959 | { |
2b2848e2 | 960 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
961 | break; |
962 | } | |
963 | } | |
964 | if (p == t->sections_end) | |
b37520b6 | 965 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 966 | bfd_get_filename (abfd)); |
51bee8e9 | 967 | |
2f1bdd26 MGD |
968 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
969 | bfd_get_start_address (abfd) | |
970 | + displacement); | |
51bee8e9 | 971 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 972 | paddress (gdbarch, entry_point)); |
51bee8e9 | 973 | } |
07b82ea5 | 974 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 975 | { |
2b2848e2 DE |
976 | struct bfd_section *psect = p->the_bfd_section; |
977 | bfd *pbfd = psect->owner; | |
978 | ||
bb599908 PH |
979 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
980 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
981 | |
982 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
983 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
984 | since most output will then be much wider than necessary. It | |
985 | may make sense to test the size of the file and choose the | |
986 | format string accordingly. */ | |
a3f17187 | 987 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
988 | if (info_verbose) |
989 | printf_filtered (" @ %s", | |
2b2848e2 DE |
990 | hex_string_custom (psect->filepos, 8)); |
991 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
992 | if (pbfd != abfd) | |
993 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
994 | printf_filtered ("\n"); |
995 | } | |
996 | } | |
997 | ||
998 | static void | |
fba45db2 | 999 | exec_files_info (struct target_ops *t) |
c906108c | 1000 | { |
57008375 JK |
1001 | if (exec_bfd) |
1002 | print_section_info (current_target_sections, exec_bfd); | |
1003 | else | |
1004 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
1005 | } |
1006 | ||
1007 | static void | |
fba45db2 | 1008 | set_section_command (char *args, int from_tty) |
c906108c | 1009 | { |
0542c86d | 1010 | struct target_section *p; |
c906108c SS |
1011 | char *secname; |
1012 | unsigned seclen; | |
1013 | unsigned long secaddr; | |
1014 | char secprint[100]; | |
1015 | long offset; | |
07b82ea5 | 1016 | struct target_section_table *table; |
c906108c SS |
1017 | |
1018 | if (args == 0) | |
8a3fe4f8 | 1019 | error (_("Must specify section name and its virtual address")); |
c906108c | 1020 | |
0963b4bd | 1021 | /* Parse out section name. */ |
c5aa993b | 1022 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1023 | seclen = args - secname; |
1024 | ||
0963b4bd | 1025 | /* Parse out new virtual address. */ |
c906108c SS |
1026 | secaddr = parse_and_eval_address (args); |
1027 | ||
07b82ea5 PA |
1028 | table = current_target_sections; |
1029 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1030 | { |
57008375 | 1031 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 1032 | p->the_bfd_section), seclen) |
57008375 | 1033 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
1034 | { |
1035 | offset = secaddr - p->addr; | |
1036 | p->addr += offset; | |
1037 | p->endaddr += offset; | |
1038 | if (from_tty) | |
1039 | exec_files_info (&exec_ops); | |
1040 | return; | |
1041 | } | |
c906108c | 1042 | } |
c906108c SS |
1043 | if (seclen >= sizeof (secprint)) |
1044 | seclen = sizeof (secprint) - 1; | |
1045 | strncpy (secprint, secname, seclen); | |
1046 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1047 | error (_("Section %s not found"), secprint); |
c906108c SS |
1048 | } |
1049 | ||
30510692 DJ |
1050 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1051 | it to ADDRESS. */ | |
c1bd25fd DJ |
1052 | |
1053 | void | |
1054 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1055 | { | |
0542c86d | 1056 | struct target_section *p; |
07b82ea5 | 1057 | struct target_section_table *table; |
c1bd25fd | 1058 | |
07b82ea5 PA |
1059 | table = current_target_sections; |
1060 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1061 | { |
2b2848e2 | 1062 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1063 | && index == p->the_bfd_section->index) |
c1bd25fd | 1064 | { |
30510692 | 1065 | p->endaddr += address - p->addr; |
c1bd25fd | 1066 | p->addr = address; |
c1bd25fd DJ |
1067 | } |
1068 | } | |
1069 | } | |
1070 | ||
c906108c SS |
1071 | /* If mourn is being called in all the right places, this could be say |
1072 | `gdb internal error' (since generic_mourn calls | |
1073 | breakpoint_init_inferior). */ | |
1074 | ||
1075 | static int | |
3db08215 MM |
1076 | ignore (struct target_ops *ops, struct gdbarch *gdbarch, |
1077 | struct bp_target_info *bp_tgt) | |
c906108c SS |
1078 | { |
1079 | return 0; | |
1080 | } | |
1081 | ||
73971819 PA |
1082 | /* Implement the to_remove_breakpoint method. */ |
1083 | ||
1084 | static int | |
1085 | exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, | |
1086 | struct bp_target_info *bp_tgt, | |
1087 | enum remove_bp_reason reason) | |
1088 | { | |
1089 | return 0; | |
1090 | } | |
1091 | ||
c35b1492 PA |
1092 | static int |
1093 | exec_has_memory (struct target_ops *ops) | |
1094 | { | |
1095 | /* We can provide memory if we have any file/target sections to read | |
1096 | from. */ | |
1097 | return (current_target_sections->sections | |
1098 | != current_target_sections->sections_end); | |
1099 | } | |
1100 | ||
83814951 TT |
1101 | static char * |
1102 | exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size) | |
1103 | { | |
1104 | error (_("Can't create a corefile")); | |
1105 | } | |
be4d1333 | 1106 | |
c906108c SS |
1107 | /* Fill in the exec file target vector. Very few entries need to be |
1108 | defined. */ | |
1109 | ||
be4d1333 | 1110 | static void |
fba45db2 | 1111 | init_exec_ops (void) |
c906108c SS |
1112 | { |
1113 | exec_ops.to_shortname = "exec"; | |
1114 | exec_ops.to_longname = "Local exec file"; | |
1115 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
1116 | Specify the filename of the executable file."; | |
1adeb98a | 1117 | exec_ops.to_open = exec_open; |
6c95b8df | 1118 | exec_ops.to_close = exec_close_1; |
07b82ea5 PA |
1119 | exec_ops.to_xfer_partial = exec_xfer_partial; |
1120 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
1121 | exec_ops.to_files_info = exec_files_info; |
1122 | exec_ops.to_insert_breakpoint = ignore; | |
73971819 | 1123 | exec_ops.to_remove_breakpoint = exec_remove_breakpoint; |
c906108c | 1124 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 1125 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 1126 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
b427c1bc | 1127 | exec_ops.to_find_memory_regions = objfile_find_memory_regions; |
c5aa993b | 1128 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
1129 | } |
1130 | ||
1131 | void | |
fba45db2 | 1132 | _initialize_exec (void) |
c906108c SS |
1133 | { |
1134 | struct cmd_list_element *c; | |
1135 | ||
1136 | init_exec_ops (); | |
1137 | ||
1138 | if (!dbx_commands) | |
1139 | { | |
1a966eab AC |
1140 | c = add_cmd ("file", class_files, file_command, _("\ |
1141 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1142 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1143 | and it is the program executed when you use the `run' command.\n\ | |
1144 | If FILE cannot be found as specified, your execution directory path\n\ | |
1145 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1146 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1147 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1148 | } |
1149 | ||
1a966eab AC |
1150 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1151 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1152 | If FILE cannot be found as specified, your execution directory path\n\ |
1153 | is searched for a command of that name.\n\ | |
1a966eab | 1154 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1155 | set_cmd_completer (c, filename_completer); |
c906108c | 1156 | |
1bedd215 AC |
1157 | add_com ("section", class_files, set_section_command, _("\ |
1158 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1159 | This can be used if the exec file does not contain section addresses,\n\ |
1160 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1161 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1162 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1163 | |
5bf193a2 AC |
1164 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1165 | Set writing into executable and core files."), _("\ | |
1166 | Show writing into executable and core files."), NULL, | |
1167 | NULL, | |
920d2a44 | 1168 | show_write_files, |
5bf193a2 | 1169 | &setlist, &showlist); |
c5aa993b | 1170 | |
9852c492 | 1171 | add_target_with_completer (&exec_ops, filename_completer); |
c906108c | 1172 | } |