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 | |
161 | exec_file_locate_attach (int pid, int from_tty) | |
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 | { | |
236 | symbol_file_add_main (full_exec_path, from_tty); | |
237 | } | |
238 | CATCH (err, RETURN_MASK_ERROR) | |
239 | { | |
240 | if (!exception_print_same (prev_err, err)) | |
241 | warning ("%s", err.message); | |
242 | } | |
243 | END_CATCH | |
88178e82 GB |
244 | |
245 | do_cleanups (old_chain); | |
a10de604 GB |
246 | } |
247 | ||
907083d1 | 248 | /* Set FILENAME as the new exec file. |
c906108c | 249 | |
c5aa993b JM |
250 | This function is intended to be behave essentially the same |
251 | as exec_file_command, except that the latter will detect when | |
252 | a target is being debugged, and will ask the user whether it | |
253 | should be shut down first. (If the answer is "no", then the | |
254 | new file is ignored.) | |
c906108c | 255 | |
c5aa993b JM |
256 | This file is used by exec_file_command, to do the work of opening |
257 | and processing the exec file after any prompting has happened. | |
c906108c | 258 | |
c5aa993b JM |
259 | And, it is used by child_attach, when the attach command was |
260 | given a pid but not a exec pathname, and the attach command could | |
261 | figure out the pathname from the pid. (In this case, we shouldn't | |
262 | ask the user whether the current target should be shut down -- | |
907083d1 | 263 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
264 | |
265 | void | |
5f08566b | 266 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 267 | { |
9b333ba3 TT |
268 | struct cleanup *cleanups; |
269 | ||
270 | /* First, acquire a reference to the current exec_bfd. We release | |
271 | this at the end of the function; but acquiring it now lets the | |
272 | BFD cache return it if this call refers to the same file. */ | |
273 | gdb_bfd_ref (exec_bfd); | |
274 | cleanups = make_cleanup_bfd_unref (exec_bfd); | |
275 | ||
c906108c | 276 | /* Remove any previous exec file. */ |
6c95b8df | 277 | exec_close (); |
c906108c SS |
278 | |
279 | /* Now open and digest the file the user requested, if any. */ | |
280 | ||
1adeb98a FN |
281 | if (!filename) |
282 | { | |
283 | if (from_tty) | |
a3f17187 | 284 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
285 | |
286 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
287 | } |
288 | else | |
c906108c | 289 | { |
64c0b5de | 290 | int load_via_target = 0; |
1f0c4988 | 291 | char *scratch_pathname, *canonical_pathname; |
c906108c | 292 | int scratch_chan; |
07b82ea5 | 293 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 294 | char **matching; |
c5aa993b | 295 | |
64c0b5de GB |
296 | if (is_target_filename (filename)) |
297 | { | |
298 | if (target_filesystem_is_local ()) | |
299 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
300 | else | |
301 | load_via_target = 1; | |
302 | } | |
303 | ||
304 | if (load_via_target) | |
c5aa993b | 305 | { |
64c0b5de GB |
306 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
307 | if (write_files) | |
308 | warning (_("writing into executable files is " | |
309 | "not supported for %s sysroots"), | |
310 | TARGET_SYSROOT_PREFIX); | |
311 | ||
312 | scratch_pathname = xstrdup (filename); | |
313 | make_cleanup (xfree, scratch_pathname); | |
314 | ||
315 | scratch_chan = -1; | |
d7f9d729 | 316 | |
64c0b5de | 317 | canonical_pathname = scratch_pathname; |
c5aa993b | 318 | } |
64c0b5de GB |
319 | else |
320 | { | |
321 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
322 | filename, write_files ? | |
323 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
324 | &scratch_pathname); | |
325 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) | |
326 | if (scratch_chan < 0) | |
327 | { | |
0ae1c716 | 328 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
329 | |
330 | strcat (strcpy (exename, filename), ".exe"); | |
331 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
332 | exename, write_files ? | |
333 | O_RDWR | O_BINARY | |
334 | : O_RDONLY | O_BINARY, | |
335 | &scratch_pathname); | |
336 | } | |
c906108c | 337 | #endif |
64c0b5de GB |
338 | if (scratch_chan < 0) |
339 | perror_with_name (filename); | |
a4453b7e | 340 | |
64c0b5de | 341 | make_cleanup (xfree, scratch_pathname); |
a4453b7e | 342 | |
64c0b5de GB |
343 | /* gdb_bfd_open (and its variants) prefers canonicalized |
344 | pathname for better BFD caching. */ | |
345 | canonical_pathname = gdb_realpath (scratch_pathname); | |
346 | make_cleanup (xfree, canonical_pathname); | |
347 | } | |
1f0c4988 | 348 | |
64c0b5de | 349 | if (write_files && !load_via_target) |
1f0c4988 | 350 | exec_bfd = gdb_bfd_fopen (canonical_pathname, gnutarget, |
1c00ec6b TT |
351 | FOPEN_RUB, scratch_chan); |
352 | else | |
1f0c4988 | 353 | exec_bfd = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
c906108c SS |
354 | |
355 | if (!exec_bfd) | |
9fe4a216 | 356 | { |
d5131498 | 357 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
358 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
359 | } | |
c906108c | 360 | |
64c0b5de GB |
361 | /* gdb_realpath_keepfile resolves symlinks on the local |
362 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 363 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
364 | if (load_via_target) |
365 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
366 | else | |
367 | exec_filename = gdb_realpath_keepfile (scratch_pathname); | |
1f0c4988 | 368 | |
d18b8b7a | 369 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
370 | { |
371 | /* Make sure to close exec_bfd, or else "run" might try to use | |
372 | it. */ | |
6c95b8df | 373 | exec_close (); |
8a3fe4f8 | 374 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
375 | scratch_pathname, |
376 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
377 | } |
378 | ||
07b82ea5 | 379 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
380 | { |
381 | /* Make sure to close exec_bfd, or else "run" might try to use | |
382 | it. */ | |
6c95b8df | 383 | exec_close (); |
8a3fe4f8 | 384 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
385 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
386 | } | |
387 | ||
c04ea773 DJ |
388 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
389 | ||
c906108c SS |
390 | validate_files (); |
391 | ||
392 | set_gdbarch_from_file (exec_bfd); | |
393 | ||
07b82ea5 | 394 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
395 | list of sections. This possibly pushes the exec_ops |
396 | target. */ | |
ed9eebaf | 397 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 398 | xfree (sections); |
c906108c SS |
399 | |
400 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
401 | if (deprecated_exec_file_display_hook) |
402 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 403 | } |
9b333ba3 TT |
404 | |
405 | do_cleanups (cleanups); | |
406 | ||
ce7d4522 | 407 | bfd_cache_close_all (); |
781b42b0 | 408 | observer_notify_executable_changed (); |
c906108c SS |
409 | } |
410 | ||
411 | /* Process the first arg in ARGS as the new exec file. | |
412 | ||
c5aa993b JM |
413 | Note that we have to explicitly ignore additional args, since we can |
414 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
415 | which can take multiple args. |
416 | ||
0963b4bd | 417 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 418 | |
1adeb98a | 419 | static void |
fba45db2 | 420 | exec_file_command (char *args, int from_tty) |
c906108c | 421 | { |
1adeb98a FN |
422 | char **argv; |
423 | char *filename; | |
4c42eaff DJ |
424 | |
425 | if (from_tty && target_has_execution | |
426 | && !query (_("A program is being debugged already.\n" | |
427 | "Are you sure you want to change the file? "))) | |
428 | error (_("File not changed.")); | |
1adeb98a FN |
429 | |
430 | if (args) | |
431 | { | |
f7545552 TT |
432 | struct cleanup *cleanups; |
433 | ||
1adeb98a FN |
434 | /* Scan through the args and pick up the first non option arg |
435 | as the filename. */ | |
436 | ||
d1a41061 | 437 | argv = gdb_buildargv (args); |
f7545552 | 438 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
439 | |
440 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
441 | {; | |
442 | } | |
443 | if (*argv == NULL) | |
8a3fe4f8 | 444 | error (_("No executable file name was specified")); |
1adeb98a FN |
445 | |
446 | filename = tilde_expand (*argv); | |
447 | make_cleanup (xfree, filename); | |
448 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
449 | |
450 | do_cleanups (cleanups); | |
1adeb98a FN |
451 | } |
452 | else | |
453 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
454 | } |
455 | ||
0963b4bd | 456 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
457 | What a novelty. Why did GDB go through four major releases before this |
458 | command was added? */ | |
459 | ||
460 | static void | |
fba45db2 | 461 | file_command (char *arg, int from_tty) |
c906108c SS |
462 | { |
463 | /* FIXME, if we lose on reading the symbol file, we should revert | |
464 | the exec file, but that's rough. */ | |
465 | exec_file_command (arg, from_tty); | |
466 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
467 | if (deprecated_file_changed_hook) |
468 | deprecated_file_changed_hook (arg); | |
c906108c | 469 | } |
c906108c | 470 | \f |
c5aa993b | 471 | |
0963b4bd | 472 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
473 | table_pp_char is a char * to get it through bfd_map_over_sections; |
474 | we cast it back to its proper type. */ | |
475 | ||
476 | static void | |
7be0c536 AC |
477 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
478 | void *table_pp_char) | |
c906108c | 479 | { |
0542c86d | 480 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
481 | flagword aflag; |
482 | ||
2b2848e2 DE |
483 | gdb_assert (abfd == asect->owner); |
484 | ||
0f5d55d8 JB |
485 | /* Check the section flags, but do not discard zero-length sections, since |
486 | some symbols may still be attached to this section. For instance, we | |
487 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
488 | section to which a symbol named "_end" was attached. The address | |
489 | of this symbol still needs to be relocated. */ | |
c906108c SS |
490 | aflag = bfd_get_section_flags (abfd, asect); |
491 | if (!(aflag & SEC_ALLOC)) | |
492 | return; | |
0f5d55d8 | 493 | |
046ac79f | 494 | (*table_pp)->owner = NULL; |
c906108c SS |
495 | (*table_pp)->the_bfd_section = asect; |
496 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
497 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
498 | (*table_pp)++; | |
499 | } | |
500 | ||
a5b1fd27 DE |
501 | /* See exec.h. */ |
502 | ||
503 | void | |
504 | clear_section_table (struct target_section_table *table) | |
505 | { | |
506 | xfree (table->sections); | |
507 | table->sections = table->sections_end = NULL; | |
508 | } | |
509 | ||
510 | /* Resize section table TABLE by ADJUSTMENT. | |
511 | ADJUSTMENT may be negative, in which case the caller must have already | |
512 | removed the sections being deleted. | |
513 | Returns the old size. */ | |
514 | ||
515 | static int | |
516 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 517 | { |
07b82ea5 PA |
518 | int old_count; |
519 | int new_count; | |
520 | ||
07b82ea5 PA |
521 | old_count = table->sections_end - table->sections; |
522 | ||
a5b1fd27 | 523 | new_count = adjustment + old_count; |
07b82ea5 PA |
524 | |
525 | if (new_count) | |
526 | { | |
224c3ddb SM |
527 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
528 | new_count); | |
07b82ea5 PA |
529 | table->sections_end = table->sections + new_count; |
530 | } | |
531 | else | |
a5b1fd27 | 532 | clear_section_table (table); |
07b82ea5 PA |
533 | |
534 | return old_count; | |
535 | } | |
536 | ||
c906108c SS |
537 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
538 | Returns 0 if OK, 1 on error. */ | |
539 | ||
540 | int | |
0542c86d PA |
541 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
542 | struct target_section **end) | |
c906108c SS |
543 | { |
544 | unsigned count; | |
545 | ||
546 | count = bfd_count_sections (some_bfd); | |
547 | if (*start) | |
b8c9b27d | 548 | xfree (* start); |
8d749320 | 549 | *start = XNEWVEC (struct target_section, count); |
c906108c | 550 | *end = *start; |
c5aa993b | 551 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 552 | if (*end > *start + count) |
3e43a32a MS |
553 | internal_error (__FILE__, __LINE__, |
554 | _("failed internal consistency check")); | |
c906108c SS |
555 | /* We could realloc the table, but it probably loses for most files. */ |
556 | return 0; | |
557 | } | |
07b82ea5 PA |
558 | |
559 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
560 | current set of target sections. */ | |
561 | ||
562 | void | |
046ac79f | 563 | add_target_sections (void *owner, |
ed9eebaf | 564 | struct target_section *sections, |
07b82ea5 PA |
565 | struct target_section *sections_end) |
566 | { | |
567 | int count; | |
568 | struct target_section_table *table = current_target_sections; | |
569 | ||
570 | count = sections_end - sections; | |
571 | ||
572 | if (count > 0) | |
573 | { | |
574 | int space = resize_section_table (table, count); | |
ed9eebaf | 575 | int i; |
d7f9d729 | 576 | |
ed9eebaf TT |
577 | for (i = 0; i < count; ++i) |
578 | { | |
579 | table->sections[space + i] = sections[i]; | |
046ac79f | 580 | table->sections[space + i].owner = owner; |
ed9eebaf | 581 | } |
07b82ea5 PA |
582 | |
583 | /* If these are the first file sections we can provide memory | |
584 | from, push the file_stratum target. */ | |
ab16fce8 TT |
585 | if (!target_is_pushed (&exec_ops)) |
586 | push_target (&exec_ops); | |
07b82ea5 PA |
587 | } |
588 | } | |
589 | ||
76ad5e1e NB |
590 | /* Add the sections of OBJFILE to the current set of target sections. */ |
591 | ||
592 | void | |
593 | add_target_sections_of_objfile (struct objfile *objfile) | |
594 | { | |
595 | struct target_section_table *table = current_target_sections; | |
596 | struct obj_section *osect; | |
597 | int space; | |
598 | unsigned count = 0; | |
599 | struct target_section *ts; | |
600 | ||
601 | if (objfile == NULL) | |
602 | return; | |
603 | ||
604 | /* Compute the number of sections to add. */ | |
605 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
606 | { | |
607 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
608 | continue; | |
609 | count++; | |
610 | } | |
611 | ||
612 | if (count == 0) | |
613 | return; | |
614 | ||
615 | space = resize_section_table (table, count); | |
616 | ||
617 | ts = table->sections + space; | |
618 | ||
619 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
620 | { | |
621 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
622 | continue; | |
623 | ||
624 | gdb_assert (ts < table->sections + space + count); | |
625 | ||
626 | ts->addr = obj_section_addr (osect); | |
627 | ts->endaddr = obj_section_endaddr (osect); | |
628 | ts->the_bfd_section = osect->the_bfd_section; | |
629 | ts->owner = (void *) objfile; | |
630 | ||
631 | ts++; | |
632 | } | |
633 | } | |
634 | ||
046ac79f JK |
635 | /* Remove all target sections owned by OWNER. |
636 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
637 | |
638 | void | |
046ac79f | 639 | remove_target_sections (void *owner) |
07b82ea5 PA |
640 | { |
641 | struct target_section *src, *dest; | |
07b82ea5 PA |
642 | struct target_section_table *table = current_target_sections; |
643 | ||
046ac79f JK |
644 | gdb_assert (owner != NULL); |
645 | ||
07b82ea5 PA |
646 | dest = table->sections; |
647 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 648 | if (src->owner != owner) |
07b82ea5 PA |
649 | { |
650 | /* Keep this section. */ | |
651 | if (dest < src) | |
652 | *dest = *src; | |
653 | dest++; | |
654 | } | |
655 | ||
656 | /* If we've dropped any sections, resize the section table. */ | |
657 | if (dest < src) | |
658 | { | |
659 | int old_count; | |
660 | ||
661 | old_count = resize_section_table (table, dest - src); | |
662 | ||
663 | /* If we don't have any more sections to read memory from, | |
664 | remove the file_stratum target from the stack. */ | |
665 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
666 | { |
667 | struct program_space *pspace; | |
668 | ||
669 | ALL_PSPACES (pspace) | |
670 | if (pspace->target_sections.sections | |
671 | != pspace->target_sections.sections_end) | |
672 | return; | |
673 | ||
674 | unpush_target (&exec_ops); | |
675 | } | |
07b82ea5 PA |
676 | } |
677 | } | |
678 | ||
c906108c | 679 | \f |
348f8c02 | 680 | |
1ca49d37 YQ |
681 | enum target_xfer_status |
682 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
683 | ULONGEST len, ULONGEST *xfered_len) | |
684 | { | |
685 | /* It's unduly pedantic to refuse to look at the executable for | |
686 | read-only pieces; so do the equivalent of readonly regions aka | |
687 | QTro packet. */ | |
688 | if (exec_bfd != NULL) | |
689 | { | |
690 | asection *s; | |
691 | bfd_size_type size; | |
692 | bfd_vma vma; | |
693 | ||
694 | for (s = exec_bfd->sections; s; s = s->next) | |
695 | { | |
696 | if ((s->flags & SEC_LOAD) == 0 | |
697 | || (s->flags & SEC_READONLY) == 0) | |
698 | continue; | |
699 | ||
700 | vma = s->vma; | |
701 | size = bfd_get_section_size (s); | |
702 | if (vma <= offset && offset < (vma + size)) | |
703 | { | |
704 | ULONGEST amt; | |
705 | ||
706 | amt = (vma + size) - offset; | |
707 | if (amt > len) | |
708 | amt = len; | |
709 | ||
710 | amt = bfd_get_section_contents (exec_bfd, s, | |
711 | readbuf, offset - vma, amt); | |
712 | ||
713 | if (amt == 0) | |
714 | return TARGET_XFER_EOF; | |
715 | else | |
716 | { | |
717 | *xfered_len = amt; | |
718 | return TARGET_XFER_OK; | |
719 | } | |
720 | } | |
721 | } | |
722 | } | |
723 | ||
724 | /* Indicate failure to find the requested memory block. */ | |
725 | return TARGET_XFER_E_IO; | |
726 | } | |
727 | ||
5a2eb0ef YQ |
728 | /* Appends all read-only memory ranges found in the target section |
729 | table defined by SECTIONS and SECTIONS_END, starting at (and | |
730 | intersected with) MEMADDR for LEN bytes. Returns the augmented | |
731 | VEC. */ | |
732 | ||
733 | static VEC(mem_range_s) * | |
e6ca34fc | 734 | section_table_available_memory (VEC(mem_range_s) *memory, |
424447ee | 735 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
736 | struct target_section *sections, |
737 | struct target_section *sections_end) | |
738 | { | |
739 | struct target_section *p; | |
e6ca34fc PA |
740 | |
741 | for (p = sections; p < sections_end; p++) | |
742 | { | |
2b2848e2 DE |
743 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
744 | p->the_bfd_section) | |
e6ca34fc PA |
745 | & SEC_READONLY) == 0) |
746 | continue; | |
747 | ||
748 | /* Copy the meta-data, adjusted. */ | |
749 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
750 | { | |
751 | ULONGEST lo1, hi1, lo2, hi2; | |
752 | struct mem_range *r; | |
753 | ||
754 | lo1 = memaddr; | |
755 | hi1 = memaddr + len; | |
756 | ||
757 | lo2 = p->addr; | |
758 | hi2 = p->endaddr; | |
759 | ||
760 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
761 | ||
325fac50 PA |
762 | r->start = std::max (lo1, lo2); |
763 | r->length = std::min (hi1, hi2) - r->start; | |
e6ca34fc PA |
764 | } |
765 | } | |
766 | ||
767 | return memory; | |
768 | } | |
769 | ||
1ee79381 YQ |
770 | enum target_xfer_status |
771 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
772 | ULONGEST len, ULONGEST *xfered_len) | |
773 | { | |
774 | VEC(mem_range_s) *available_memory = NULL; | |
775 | struct target_section_table *table; | |
776 | struct cleanup *old_chain; | |
777 | mem_range_s *r; | |
778 | int i; | |
779 | ||
780 | table = target_get_section_table (&exec_ops); | |
781 | available_memory = section_table_available_memory (available_memory, | |
782 | offset, len, | |
783 | table->sections, | |
784 | table->sections_end); | |
785 | ||
786 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), | |
787 | &available_memory); | |
788 | ||
789 | normalize_mem_ranges (available_memory); | |
790 | ||
791 | for (i = 0; | |
792 | VEC_iterate (mem_range_s, available_memory, i, r); | |
793 | i++) | |
794 | { | |
795 | if (mem_ranges_overlap (r->start, r->length, offset, len)) | |
796 | { | |
797 | CORE_ADDR end; | |
798 | enum target_xfer_status status; | |
799 | ||
800 | /* Get the intersection window. */ | |
768adc05 | 801 | end = std::min<CORE_ADDR> (offset + len, r->start + r->length); |
1ee79381 YQ |
802 | |
803 | gdb_assert (end - offset <= len); | |
804 | ||
805 | if (offset >= r->start) | |
806 | status = exec_read_partial_read_only (readbuf, offset, | |
807 | end - offset, | |
808 | xfered_len); | |
809 | else | |
810 | { | |
811 | *xfered_len = r->start - offset; | |
bc113b4e | 812 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
813 | } |
814 | do_cleanups (old_chain); | |
815 | return status; | |
816 | } | |
817 | } | |
818 | do_cleanups (old_chain); | |
819 | ||
820 | *xfered_len = len; | |
bc113b4e | 821 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
822 | } |
823 | ||
9b409511 | 824 | enum target_xfer_status |
07b82ea5 | 825 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 826 | ULONGEST offset, ULONGEST len, |
9b409511 | 827 | ULONGEST *xfered_len, |
07b82ea5 PA |
828 | struct target_section *sections, |
829 | struct target_section *sections_end, | |
830 | const char *section_name) | |
c906108c | 831 | { |
020cc13c | 832 | int res; |
0542c86d | 833 | struct target_section *p; |
07b82ea5 PA |
834 | ULONGEST memaddr = offset; |
835 | ULONGEST memend = memaddr + len; | |
c906108c | 836 | |
b55e14c7 | 837 | if (len == 0) |
3e43a32a MS |
838 | internal_error (__FILE__, __LINE__, |
839 | _("failed internal consistency check")); | |
c906108c | 840 | |
348f8c02 | 841 | for (p = sections; p < sections_end; p++) |
c906108c | 842 | { |
2b2848e2 DE |
843 | struct bfd_section *asect = p->the_bfd_section; |
844 | bfd *abfd = asect->owner; | |
845 | ||
846 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 847 | continue; /* not the section we need. */ |
c906108c | 848 | if (memaddr >= p->addr) |
3db26b01 JB |
849 | { |
850 | if (memend <= p->endaddr) | |
851 | { | |
852 | /* Entire transfer is within this section. */ | |
07b82ea5 | 853 | if (writebuf) |
2b2848e2 | 854 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 855 | writebuf, memaddr - p->addr, |
85302095 AC |
856 | len); |
857 | else | |
2b2848e2 | 858 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 859 | readbuf, memaddr - p->addr, |
85302095 | 860 | len); |
9b409511 YQ |
861 | |
862 | if (res != 0) | |
863 | { | |
864 | *xfered_len = len; | |
865 | return TARGET_XFER_OK; | |
866 | } | |
867 | else | |
868 | return TARGET_XFER_EOF; | |
3db26b01 JB |
869 | } |
870 | else if (memaddr >= p->endaddr) | |
871 | { | |
872 | /* This section ends before the transfer starts. */ | |
873 | continue; | |
874 | } | |
875 | else | |
876 | { | |
877 | /* This section overlaps the transfer. Just do half. */ | |
878 | len = p->endaddr - memaddr; | |
07b82ea5 | 879 | if (writebuf) |
2b2848e2 | 880 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 881 | writebuf, memaddr - p->addr, |
85302095 AC |
882 | len); |
883 | else | |
2b2848e2 | 884 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 885 | readbuf, memaddr - p->addr, |
85302095 | 886 | len); |
9b409511 YQ |
887 | if (res != 0) |
888 | { | |
889 | *xfered_len = len; | |
890 | return TARGET_XFER_OK; | |
891 | } | |
892 | else | |
893 | return TARGET_XFER_EOF; | |
3db26b01 JB |
894 | } |
895 | } | |
c906108c SS |
896 | } |
897 | ||
9b409511 | 898 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 899 | } |
348f8c02 | 900 | |
70221824 | 901 | static struct target_section_table * |
07b82ea5 | 902 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 903 | { |
07b82ea5 | 904 | return current_target_sections; |
348f8c02 PA |
905 | } |
906 | ||
9b409511 | 907 | static enum target_xfer_status |
07b82ea5 PA |
908 | exec_xfer_partial (struct target_ops *ops, enum target_object object, |
909 | const char *annex, gdb_byte *readbuf, | |
910 | const gdb_byte *writebuf, | |
9b409511 | 911 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
348f8c02 | 912 | { |
07b82ea5 PA |
913 | struct target_section_table *table = target_get_section_table (ops); |
914 | ||
915 | if (object == TARGET_OBJECT_MEMORY) | |
916 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 917 | offset, len, xfered_len, |
07b82ea5 PA |
918 | table->sections, |
919 | table->sections_end, | |
920 | NULL); | |
921 | else | |
2ed4b548 | 922 | return TARGET_XFER_E_IO; |
348f8c02 | 923 | } |
c906108c | 924 | \f |
c5aa993b | 925 | |
c906108c | 926 | void |
07b82ea5 | 927 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 928 | { |
5af949e3 | 929 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 930 | struct target_section *p; |
17a912b6 | 931 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 932 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 933 | |
c5aa993b | 934 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 935 | wrap_here (" "); |
a3f17187 | 936 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 937 | if (abfd == exec_bfd) |
51bee8e9 | 938 | { |
3e43a32a MS |
939 | /* gcc-3.4 does not like the initialization in |
940 | <p == t->sections_end>. */ | |
d904de5b | 941 | bfd_vma displacement = 0; |
2f1bdd26 | 942 | bfd_vma entry_point; |
51bee8e9 JK |
943 | |
944 | for (p = t->sections; p < t->sections_end; p++) | |
945 | { | |
2b2848e2 DE |
946 | struct bfd_section *psect = p->the_bfd_section; |
947 | bfd *pbfd = psect->owner; | |
51bee8e9 | 948 | |
2b2848e2 | 949 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
950 | != (SEC_ALLOC | SEC_LOAD)) |
951 | continue; | |
952 | ||
2b2848e2 DE |
953 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
954 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
955 | + bfd_get_section_size (psect))) | |
51bee8e9 | 956 | { |
2b2848e2 | 957 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
958 | break; |
959 | } | |
960 | } | |
961 | if (p == t->sections_end) | |
b37520b6 | 962 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 963 | bfd_get_filename (abfd)); |
51bee8e9 | 964 | |
2f1bdd26 MGD |
965 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
966 | bfd_get_start_address (abfd) | |
967 | + displacement); | |
51bee8e9 | 968 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 969 | paddress (gdbarch, entry_point)); |
51bee8e9 | 970 | } |
07b82ea5 | 971 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 972 | { |
2b2848e2 DE |
973 | struct bfd_section *psect = p->the_bfd_section; |
974 | bfd *pbfd = psect->owner; | |
975 | ||
bb599908 PH |
976 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
977 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
978 | |
979 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
980 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
981 | since most output will then be much wider than necessary. It | |
982 | may make sense to test the size of the file and choose the | |
983 | format string accordingly. */ | |
a3f17187 | 984 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
985 | if (info_verbose) |
986 | printf_filtered (" @ %s", | |
2b2848e2 DE |
987 | hex_string_custom (psect->filepos, 8)); |
988 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
989 | if (pbfd != abfd) | |
990 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
991 | printf_filtered ("\n"); |
992 | } | |
993 | } | |
994 | ||
995 | static void | |
fba45db2 | 996 | exec_files_info (struct target_ops *t) |
c906108c | 997 | { |
57008375 JK |
998 | if (exec_bfd) |
999 | print_section_info (current_target_sections, exec_bfd); | |
1000 | else | |
1001 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
1002 | } |
1003 | ||
1004 | static void | |
fba45db2 | 1005 | set_section_command (char *args, int from_tty) |
c906108c | 1006 | { |
0542c86d | 1007 | struct target_section *p; |
c906108c SS |
1008 | char *secname; |
1009 | unsigned seclen; | |
1010 | unsigned long secaddr; | |
1011 | char secprint[100]; | |
1012 | long offset; | |
07b82ea5 | 1013 | struct target_section_table *table; |
c906108c SS |
1014 | |
1015 | if (args == 0) | |
8a3fe4f8 | 1016 | error (_("Must specify section name and its virtual address")); |
c906108c | 1017 | |
0963b4bd | 1018 | /* Parse out section name. */ |
c5aa993b | 1019 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1020 | seclen = args - secname; |
1021 | ||
0963b4bd | 1022 | /* Parse out new virtual address. */ |
c906108c SS |
1023 | secaddr = parse_and_eval_address (args); |
1024 | ||
07b82ea5 PA |
1025 | table = current_target_sections; |
1026 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1027 | { |
57008375 | 1028 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 1029 | p->the_bfd_section), seclen) |
57008375 | 1030 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
1031 | { |
1032 | offset = secaddr - p->addr; | |
1033 | p->addr += offset; | |
1034 | p->endaddr += offset; | |
1035 | if (from_tty) | |
1036 | exec_files_info (&exec_ops); | |
1037 | return; | |
1038 | } | |
c906108c | 1039 | } |
c906108c SS |
1040 | if (seclen >= sizeof (secprint)) |
1041 | seclen = sizeof (secprint) - 1; | |
1042 | strncpy (secprint, secname, seclen); | |
1043 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1044 | error (_("Section %s not found"), secprint); |
c906108c SS |
1045 | } |
1046 | ||
30510692 DJ |
1047 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1048 | it to ADDRESS. */ | |
c1bd25fd DJ |
1049 | |
1050 | void | |
1051 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1052 | { | |
0542c86d | 1053 | struct target_section *p; |
07b82ea5 | 1054 | struct target_section_table *table; |
c1bd25fd | 1055 | |
07b82ea5 PA |
1056 | table = current_target_sections; |
1057 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1058 | { |
2b2848e2 | 1059 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1060 | && index == p->the_bfd_section->index) |
c1bd25fd | 1061 | { |
30510692 | 1062 | p->endaddr += address - p->addr; |
c1bd25fd | 1063 | p->addr = address; |
c1bd25fd DJ |
1064 | } |
1065 | } | |
1066 | } | |
1067 | ||
c906108c SS |
1068 | /* If mourn is being called in all the right places, this could be say |
1069 | `gdb internal error' (since generic_mourn calls | |
1070 | breakpoint_init_inferior). */ | |
1071 | ||
1072 | static int | |
3db08215 MM |
1073 | ignore (struct target_ops *ops, struct gdbarch *gdbarch, |
1074 | struct bp_target_info *bp_tgt) | |
c906108c SS |
1075 | { |
1076 | return 0; | |
1077 | } | |
1078 | ||
73971819 PA |
1079 | /* Implement the to_remove_breakpoint method. */ |
1080 | ||
1081 | static int | |
1082 | exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, | |
1083 | struct bp_target_info *bp_tgt, | |
1084 | enum remove_bp_reason reason) | |
1085 | { | |
1086 | return 0; | |
1087 | } | |
1088 | ||
c35b1492 PA |
1089 | static int |
1090 | exec_has_memory (struct target_ops *ops) | |
1091 | { | |
1092 | /* We can provide memory if we have any file/target sections to read | |
1093 | from. */ | |
1094 | return (current_target_sections->sections | |
1095 | != current_target_sections->sections_end); | |
1096 | } | |
1097 | ||
83814951 TT |
1098 | static char * |
1099 | exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size) | |
1100 | { | |
1101 | error (_("Can't create a corefile")); | |
1102 | } | |
be4d1333 | 1103 | |
c906108c SS |
1104 | /* Fill in the exec file target vector. Very few entries need to be |
1105 | defined. */ | |
1106 | ||
be4d1333 | 1107 | static void |
fba45db2 | 1108 | init_exec_ops (void) |
c906108c SS |
1109 | { |
1110 | exec_ops.to_shortname = "exec"; | |
1111 | exec_ops.to_longname = "Local exec file"; | |
1112 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
1113 | Specify the filename of the executable file."; | |
1adeb98a | 1114 | exec_ops.to_open = exec_open; |
6c95b8df | 1115 | exec_ops.to_close = exec_close_1; |
07b82ea5 PA |
1116 | exec_ops.to_xfer_partial = exec_xfer_partial; |
1117 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
1118 | exec_ops.to_files_info = exec_files_info; |
1119 | exec_ops.to_insert_breakpoint = ignore; | |
73971819 | 1120 | exec_ops.to_remove_breakpoint = exec_remove_breakpoint; |
c906108c | 1121 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 1122 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 1123 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
b427c1bc | 1124 | exec_ops.to_find_memory_regions = objfile_find_memory_regions; |
c5aa993b | 1125 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
1126 | } |
1127 | ||
1128 | void | |
fba45db2 | 1129 | _initialize_exec (void) |
c906108c SS |
1130 | { |
1131 | struct cmd_list_element *c; | |
1132 | ||
1133 | init_exec_ops (); | |
1134 | ||
1135 | if (!dbx_commands) | |
1136 | { | |
1a966eab AC |
1137 | c = add_cmd ("file", class_files, file_command, _("\ |
1138 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1139 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1140 | and it is the program executed when you use the `run' command.\n\ | |
1141 | If FILE cannot be found as specified, your execution directory path\n\ | |
1142 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1143 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1144 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1145 | } |
1146 | ||
1a966eab AC |
1147 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1148 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1149 | If FILE cannot be found as specified, your execution directory path\n\ |
1150 | is searched for a command of that name.\n\ | |
1a966eab | 1151 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1152 | set_cmd_completer (c, filename_completer); |
c906108c | 1153 | |
1bedd215 AC |
1154 | add_com ("section", class_files, set_section_command, _("\ |
1155 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1156 | This can be used if the exec file does not contain section addresses,\n\ |
1157 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1158 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1159 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1160 | |
5bf193a2 AC |
1161 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1162 | Set writing into executable and core files."), _("\ | |
1163 | Show writing into executable and core files."), NULL, | |
1164 | NULL, | |
920d2a44 | 1165 | show_write_files, |
5bf193a2 | 1166 | &setlist, &showlist); |
c5aa993b | 1167 | |
9852c492 | 1168 | add_target_with_completer (&exec_ops, filename_completer); |
c906108c | 1169 | } |