Commit | Line | Data |
---|---|---|
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" |
c906108c | 46 | |
9a4105ab | 47 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
48 | |
49 | /* Prototypes for local functions */ | |
50 | ||
a14ed312 | 51 | static void file_command (char *, int); |
c906108c | 52 | |
a14ed312 | 53 | static void set_section_command (char *, int); |
c906108c | 54 | |
a14ed312 | 55 | static void exec_files_info (struct target_ops *); |
c906108c | 56 | |
a14ed312 | 57 | static void init_exec_ops (void); |
c906108c | 58 | |
a14ed312 | 59 | void _initialize_exec (void); |
c906108c | 60 | |
c906108c SS |
61 | /* The target vector for executable files. */ |
62 | ||
e8b2341c | 63 | static struct target_ops exec_ops; |
c906108c | 64 | |
c906108c SS |
65 | /* Whether to open exec and core files read-only or read-write. */ |
66 | ||
67 | int write_files = 0; | |
920d2a44 AC |
68 | static void |
69 | show_write_files (struct ui_file *file, int from_tty, | |
70 | struct cmd_list_element *c, const char *value) | |
71 | { | |
72 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
73 | value); | |
74 | } | |
75 | ||
c906108c | 76 | |
4c42eaff | 77 | static void |
014f9477 | 78 | exec_open (const char *args, int from_tty) |
1adeb98a FN |
79 | { |
80 | target_preopen (from_tty); | |
81 | exec_file_attach (args, from_tty); | |
82 | } | |
83 | ||
07b82ea5 PA |
84 | /* Close and clear exec_bfd. If we end up with no target sections to |
85 | read memory from, this unpushes the exec_ops target. */ | |
86 | ||
6c95b8df PA |
87 | void |
88 | exec_close (void) | |
07b82ea5 PA |
89 | { |
90 | if (exec_bfd) | |
91 | { | |
92 | bfd *abfd = exec_bfd; | |
07b82ea5 | 93 | |
cbb099e8 | 94 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
95 | |
96 | /* Removing target sections may close the exec_ops target. | |
97 | Clear exec_bfd before doing so to prevent recursion. */ | |
98 | exec_bfd = NULL; | |
99 | exec_bfd_mtime = 0; | |
100 | ||
046ac79f | 101 | remove_target_sections (&exec_bfd); |
1f0c4988 JK |
102 | |
103 | xfree (exec_filename); | |
104 | exec_filename = NULL; | |
07b82ea5 PA |
105 | } |
106 | } | |
107 | ||
6c95b8df PA |
108 | /* This is the target_close implementation. Clears all target |
109 | sections and closes all executable bfds from all program spaces. */ | |
110 | ||
c906108c | 111 | static void |
de90e03d | 112 | exec_close_1 (struct target_ops *self) |
c906108c | 113 | { |
ab16fce8 TT |
114 | struct program_space *ss; |
115 | struct cleanup *old_chain; | |
6c95b8df | 116 | |
ab16fce8 TT |
117 | old_chain = save_current_program_space (); |
118 | ALL_PSPACES (ss) | |
6c95b8df | 119 | { |
ab16fce8 TT |
120 | set_current_program_space (ss); |
121 | clear_section_table (current_target_sections); | |
122 | exec_close (); | |
6c95b8df | 123 | } |
ab16fce8 TT |
124 | |
125 | do_cleanups (old_chain); | |
c906108c SS |
126 | } |
127 | ||
1adeb98a FN |
128 | void |
129 | exec_file_clear (int from_tty) | |
130 | { | |
131 | /* Remove exec file. */ | |
6c95b8df | 132 | exec_close (); |
1adeb98a FN |
133 | |
134 | if (from_tty) | |
a3f17187 | 135 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
136 | } |
137 | ||
57d1de9c LM |
138 | /* Returns non-zero if exceptions E1 and E2 are equal. Returns zero |
139 | otherwise. */ | |
140 | ||
141 | static int | |
142 | exception_print_same (struct gdb_exception e1, struct gdb_exception e2) | |
143 | { | |
144 | const char *msg1 = e1.message; | |
145 | const char *msg2 = e2.message; | |
146 | ||
147 | if (msg1 == NULL) | |
148 | msg1 = ""; | |
149 | if (msg2 == NULL) | |
150 | msg2 = ""; | |
151 | ||
152 | return (e1.reason == e2.reason | |
153 | && e1.error == e2.error | |
154 | && strcmp (e1.message, e2.message) == 0); | |
155 | } | |
156 | ||
a10de604 GB |
157 | /* See gdbcore.h. */ |
158 | ||
159 | void | |
160 | exec_file_locate_attach (int pid, int from_tty) | |
161 | { | |
162 | char *exec_file, *full_exec_path = NULL; | |
88178e82 | 163 | struct cleanup *old_chain; |
57d1de9c | 164 | struct gdb_exception prev_err = exception_none; |
a10de604 GB |
165 | |
166 | /* Do nothing if we already have an executable filename. */ | |
167 | exec_file = (char *) get_exec_file (0); | |
168 | if (exec_file != NULL) | |
169 | return; | |
170 | ||
171 | /* Try to determine a filename from the process itself. */ | |
172 | exec_file = target_pid_to_exec_file (pid); | |
173 | if (exec_file == NULL) | |
fef3cb9f JK |
174 | { |
175 | warning (_("No executable has been specified and target does not " | |
176 | "support\n" | |
177 | "determining executable automatically. " | |
178 | "Try using the \"file\" command.")); | |
179 | return; | |
180 | } | |
a10de604 | 181 | |
a9a5a3d1 GB |
182 | /* If gdb_sysroot is not empty and the discovered filename |
183 | is absolute then prefix the filename with gdb_sysroot. */ | |
a3be80c3 | 184 | if (*gdb_sysroot != '\0' && IS_ABSOLUTE_PATH (exec_file)) |
bf74e428 GB |
185 | { |
186 | full_exec_path = exec_file_find (exec_file, NULL); | |
187 | if (full_exec_path == NULL) | |
188 | return; | |
189 | } | |
190 | else | |
a9a5a3d1 GB |
191 | { |
192 | /* It's possible we don't have a full path, but rather just a | |
193 | filename. Some targets, such as HP-UX, don't provide the | |
194 | full path, sigh. | |
195 | ||
196 | Attempt to qualify the filename against the source path. | |
197 | (If that fails, we'll just fall back on the original | |
198 | filename. Not much more we can do...) */ | |
199 | if (!source_full_path_of (exec_file, &full_exec_path)) | |
200 | full_exec_path = xstrdup (exec_file); | |
201 | } | |
a10de604 | 202 | |
88178e82 | 203 | old_chain = make_cleanup (xfree, full_exec_path); |
57d1de9c LM |
204 | make_cleanup (free_current_contents, &prev_err.message); |
205 | ||
206 | /* exec_file_attach and symbol_file_add_main may throw an error if the file | |
207 | cannot be opened either locally or remotely. | |
208 | ||
209 | This happens for example, when the file is first found in the local | |
210 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
211 | exist in the target filesystem, or when the file does exist, but | |
212 | is not readable. | |
88178e82 | 213 | |
57d1de9c LM |
214 | Even without a symbol file, the remote-based debugging session should |
215 | continue normally instead of ending abruptly. Hence we catch thrown | |
216 | errors/exceptions in the following code. */ | |
217 | TRY | |
218 | { | |
219 | exec_file_attach (full_exec_path, from_tty); | |
220 | } | |
221 | CATCH (err, RETURN_MASK_ERROR) | |
222 | { | |
223 | if (err.message != NULL) | |
224 | warning ("%s", err.message); | |
225 | ||
226 | prev_err = err; | |
227 | ||
228 | /* Save message so it doesn't get trashed by the catch below. */ | |
229 | prev_err.message = xstrdup (err.message); | |
230 | } | |
231 | END_CATCH | |
232 | ||
233 | TRY | |
234 | { | |
235 | symbol_file_add_main (full_exec_path, from_tty); | |
236 | } | |
237 | CATCH (err, RETURN_MASK_ERROR) | |
238 | { | |
239 | if (!exception_print_same (prev_err, err)) | |
240 | warning ("%s", err.message); | |
241 | } | |
242 | END_CATCH | |
88178e82 GB |
243 | |
244 | do_cleanups (old_chain); | |
a10de604 GB |
245 | } |
246 | ||
907083d1 | 247 | /* Set FILENAME as the new exec file. |
c906108c | 248 | |
c5aa993b JM |
249 | This function is intended to be behave essentially the same |
250 | as exec_file_command, except that the latter will detect when | |
251 | a target is being debugged, and will ask the user whether it | |
252 | should be shut down first. (If the answer is "no", then the | |
253 | new file is ignored.) | |
c906108c | 254 | |
c5aa993b JM |
255 | This file is used by exec_file_command, to do the work of opening |
256 | and processing the exec file after any prompting has happened. | |
c906108c | 257 | |
c5aa993b JM |
258 | And, it is used by child_attach, when the attach command was |
259 | given a pid but not a exec pathname, and the attach command could | |
260 | figure out the pathname from the pid. (In this case, we shouldn't | |
261 | ask the user whether the current target should be shut down -- | |
907083d1 | 262 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
263 | |
264 | void | |
5f08566b | 265 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 266 | { |
9b333ba3 TT |
267 | struct cleanup *cleanups; |
268 | ||
269 | /* First, acquire a reference to the current exec_bfd. We release | |
270 | this at the end of the function; but acquiring it now lets the | |
271 | BFD cache return it if this call refers to the same file. */ | |
272 | gdb_bfd_ref (exec_bfd); | |
273 | cleanups = make_cleanup_bfd_unref (exec_bfd); | |
274 | ||
c906108c | 275 | /* Remove any previous exec file. */ |
6c95b8df | 276 | exec_close (); |
c906108c SS |
277 | |
278 | /* Now open and digest the file the user requested, if any. */ | |
279 | ||
1adeb98a FN |
280 | if (!filename) |
281 | { | |
282 | if (from_tty) | |
a3f17187 | 283 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
284 | |
285 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
286 | } |
287 | else | |
c906108c | 288 | { |
64c0b5de | 289 | int load_via_target = 0; |
1f0c4988 | 290 | char *scratch_pathname, *canonical_pathname; |
c906108c | 291 | int scratch_chan; |
07b82ea5 | 292 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 293 | char **matching; |
c5aa993b | 294 | |
64c0b5de GB |
295 | if (is_target_filename (filename)) |
296 | { | |
297 | if (target_filesystem_is_local ()) | |
298 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
299 | else | |
300 | load_via_target = 1; | |
301 | } | |
302 | ||
303 | if (load_via_target) | |
c5aa993b | 304 | { |
64c0b5de GB |
305 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
306 | if (write_files) | |
307 | warning (_("writing into executable files is " | |
308 | "not supported for %s sysroots"), | |
309 | TARGET_SYSROOT_PREFIX); | |
310 | ||
311 | scratch_pathname = xstrdup (filename); | |
312 | make_cleanup (xfree, scratch_pathname); | |
313 | ||
314 | scratch_chan = -1; | |
d7f9d729 | 315 | |
64c0b5de | 316 | canonical_pathname = scratch_pathname; |
c5aa993b | 317 | } |
64c0b5de GB |
318 | else |
319 | { | |
320 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
321 | filename, write_files ? | |
322 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
323 | &scratch_pathname); | |
324 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) | |
325 | if (scratch_chan < 0) | |
326 | { | |
0ae1c716 | 327 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
328 | |
329 | strcat (strcpy (exename, filename), ".exe"); | |
330 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
331 | exename, write_files ? | |
332 | O_RDWR | O_BINARY | |
333 | : O_RDONLY | O_BINARY, | |
334 | &scratch_pathname); | |
335 | } | |
c906108c | 336 | #endif |
64c0b5de GB |
337 | if (scratch_chan < 0) |
338 | perror_with_name (filename); | |
a4453b7e | 339 | |
64c0b5de | 340 | make_cleanup (xfree, scratch_pathname); |
a4453b7e | 341 | |
64c0b5de GB |
342 | /* gdb_bfd_open (and its variants) prefers canonicalized |
343 | pathname for better BFD caching. */ | |
344 | canonical_pathname = gdb_realpath (scratch_pathname); | |
345 | make_cleanup (xfree, canonical_pathname); | |
346 | } | |
1f0c4988 | 347 | |
64c0b5de | 348 | if (write_files && !load_via_target) |
1f0c4988 | 349 | exec_bfd = gdb_bfd_fopen (canonical_pathname, gnutarget, |
1c00ec6b TT |
350 | FOPEN_RUB, scratch_chan); |
351 | else | |
1f0c4988 | 352 | exec_bfd = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
c906108c SS |
353 | |
354 | if (!exec_bfd) | |
9fe4a216 | 355 | { |
d5131498 | 356 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
357 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
358 | } | |
c906108c | 359 | |
64c0b5de GB |
360 | /* gdb_realpath_keepfile resolves symlinks on the local |
361 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 362 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
363 | if (load_via_target) |
364 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
365 | else | |
366 | exec_filename = gdb_realpath_keepfile (scratch_pathname); | |
1f0c4988 | 367 | |
d18b8b7a | 368 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
369 | { |
370 | /* Make sure to close exec_bfd, or else "run" might try to use | |
371 | it. */ | |
6c95b8df | 372 | exec_close (); |
8a3fe4f8 | 373 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
374 | scratch_pathname, |
375 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
376 | } |
377 | ||
07b82ea5 | 378 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
379 | { |
380 | /* Make sure to close exec_bfd, or else "run" might try to use | |
381 | it. */ | |
6c95b8df | 382 | exec_close (); |
8a3fe4f8 | 383 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
384 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
385 | } | |
386 | ||
c04ea773 DJ |
387 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
388 | ||
c906108c SS |
389 | validate_files (); |
390 | ||
391 | set_gdbarch_from_file (exec_bfd); | |
392 | ||
07b82ea5 | 393 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
394 | list of sections. This possibly pushes the exec_ops |
395 | target. */ | |
ed9eebaf | 396 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 397 | xfree (sections); |
c906108c SS |
398 | |
399 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
400 | if (deprecated_exec_file_display_hook) |
401 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 402 | } |
9b333ba3 TT |
403 | |
404 | do_cleanups (cleanups); | |
405 | ||
ce7d4522 | 406 | bfd_cache_close_all (); |
781b42b0 | 407 | observer_notify_executable_changed (); |
c906108c SS |
408 | } |
409 | ||
410 | /* Process the first arg in ARGS as the new exec file. | |
411 | ||
c5aa993b JM |
412 | Note that we have to explicitly ignore additional args, since we can |
413 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
414 | which can take multiple args. |
415 | ||
0963b4bd | 416 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 417 | |
1adeb98a | 418 | static void |
fba45db2 | 419 | exec_file_command (char *args, int from_tty) |
c906108c | 420 | { |
1adeb98a FN |
421 | char **argv; |
422 | char *filename; | |
4c42eaff DJ |
423 | |
424 | if (from_tty && target_has_execution | |
425 | && !query (_("A program is being debugged already.\n" | |
426 | "Are you sure you want to change the file? "))) | |
427 | error (_("File not changed.")); | |
1adeb98a FN |
428 | |
429 | if (args) | |
430 | { | |
f7545552 TT |
431 | struct cleanup *cleanups; |
432 | ||
1adeb98a FN |
433 | /* Scan through the args and pick up the first non option arg |
434 | as the filename. */ | |
435 | ||
d1a41061 | 436 | argv = gdb_buildargv (args); |
f7545552 | 437 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
438 | |
439 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
440 | {; | |
441 | } | |
442 | if (*argv == NULL) | |
8a3fe4f8 | 443 | error (_("No executable file name was specified")); |
1adeb98a FN |
444 | |
445 | filename = tilde_expand (*argv); | |
446 | make_cleanup (xfree, filename); | |
447 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
448 | |
449 | do_cleanups (cleanups); | |
1adeb98a FN |
450 | } |
451 | else | |
452 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
453 | } |
454 | ||
0963b4bd | 455 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
456 | What a novelty. Why did GDB go through four major releases before this |
457 | command was added? */ | |
458 | ||
459 | static void | |
fba45db2 | 460 | file_command (char *arg, int from_tty) |
c906108c SS |
461 | { |
462 | /* FIXME, if we lose on reading the symbol file, we should revert | |
463 | the exec file, but that's rough. */ | |
464 | exec_file_command (arg, from_tty); | |
465 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
466 | if (deprecated_file_changed_hook) |
467 | deprecated_file_changed_hook (arg); | |
c906108c | 468 | } |
c906108c | 469 | \f |
c5aa993b | 470 | |
0963b4bd | 471 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
472 | table_pp_char is a char * to get it through bfd_map_over_sections; |
473 | we cast it back to its proper type. */ | |
474 | ||
475 | static void | |
7be0c536 AC |
476 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
477 | void *table_pp_char) | |
c906108c | 478 | { |
0542c86d | 479 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
480 | flagword aflag; |
481 | ||
2b2848e2 DE |
482 | gdb_assert (abfd == asect->owner); |
483 | ||
0f5d55d8 JB |
484 | /* Check the section flags, but do not discard zero-length sections, since |
485 | some symbols may still be attached to this section. For instance, we | |
486 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
487 | section to which a symbol named "_end" was attached. The address | |
488 | of this symbol still needs to be relocated. */ | |
c906108c SS |
489 | aflag = bfd_get_section_flags (abfd, asect); |
490 | if (!(aflag & SEC_ALLOC)) | |
491 | return; | |
0f5d55d8 | 492 | |
046ac79f | 493 | (*table_pp)->owner = NULL; |
c906108c SS |
494 | (*table_pp)->the_bfd_section = asect; |
495 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
496 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
497 | (*table_pp)++; | |
498 | } | |
499 | ||
a5b1fd27 DE |
500 | /* See exec.h. */ |
501 | ||
502 | void | |
503 | clear_section_table (struct target_section_table *table) | |
504 | { | |
505 | xfree (table->sections); | |
506 | table->sections = table->sections_end = NULL; | |
507 | } | |
508 | ||
509 | /* Resize section table TABLE by ADJUSTMENT. | |
510 | ADJUSTMENT may be negative, in which case the caller must have already | |
511 | removed the sections being deleted. | |
512 | Returns the old size. */ | |
513 | ||
514 | static int | |
515 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 516 | { |
07b82ea5 PA |
517 | int old_count; |
518 | int new_count; | |
519 | ||
07b82ea5 PA |
520 | old_count = table->sections_end - table->sections; |
521 | ||
a5b1fd27 | 522 | new_count = adjustment + old_count; |
07b82ea5 PA |
523 | |
524 | if (new_count) | |
525 | { | |
224c3ddb SM |
526 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
527 | new_count); | |
07b82ea5 PA |
528 | table->sections_end = table->sections + new_count; |
529 | } | |
530 | else | |
a5b1fd27 | 531 | clear_section_table (table); |
07b82ea5 PA |
532 | |
533 | return old_count; | |
534 | } | |
535 | ||
c906108c SS |
536 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
537 | Returns 0 if OK, 1 on error. */ | |
538 | ||
539 | int | |
0542c86d PA |
540 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
541 | struct target_section **end) | |
c906108c SS |
542 | { |
543 | unsigned count; | |
544 | ||
545 | count = bfd_count_sections (some_bfd); | |
546 | if (*start) | |
b8c9b27d | 547 | xfree (* start); |
8d749320 | 548 | *start = XNEWVEC (struct target_section, count); |
c906108c | 549 | *end = *start; |
c5aa993b | 550 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 551 | if (*end > *start + count) |
3e43a32a MS |
552 | internal_error (__FILE__, __LINE__, |
553 | _("failed internal consistency check")); | |
c906108c SS |
554 | /* We could realloc the table, but it probably loses for most files. */ |
555 | return 0; | |
556 | } | |
07b82ea5 PA |
557 | |
558 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
559 | current set of target sections. */ | |
560 | ||
561 | void | |
046ac79f | 562 | add_target_sections (void *owner, |
ed9eebaf | 563 | struct target_section *sections, |
07b82ea5 PA |
564 | struct target_section *sections_end) |
565 | { | |
566 | int count; | |
567 | struct target_section_table *table = current_target_sections; | |
568 | ||
569 | count = sections_end - sections; | |
570 | ||
571 | if (count > 0) | |
572 | { | |
573 | int space = resize_section_table (table, count); | |
ed9eebaf | 574 | int i; |
d7f9d729 | 575 | |
ed9eebaf TT |
576 | for (i = 0; i < count; ++i) |
577 | { | |
578 | table->sections[space + i] = sections[i]; | |
046ac79f | 579 | table->sections[space + i].owner = owner; |
ed9eebaf | 580 | } |
07b82ea5 PA |
581 | |
582 | /* If these are the first file sections we can provide memory | |
583 | from, push the file_stratum target. */ | |
ab16fce8 TT |
584 | if (!target_is_pushed (&exec_ops)) |
585 | push_target (&exec_ops); | |
07b82ea5 PA |
586 | } |
587 | } | |
588 | ||
76ad5e1e NB |
589 | /* Add the sections of OBJFILE to the current set of target sections. */ |
590 | ||
591 | void | |
592 | add_target_sections_of_objfile (struct objfile *objfile) | |
593 | { | |
594 | struct target_section_table *table = current_target_sections; | |
595 | struct obj_section *osect; | |
596 | int space; | |
597 | unsigned count = 0; | |
598 | struct target_section *ts; | |
599 | ||
600 | if (objfile == NULL) | |
601 | return; | |
602 | ||
603 | /* Compute the number of sections to add. */ | |
604 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
605 | { | |
606 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
607 | continue; | |
608 | count++; | |
609 | } | |
610 | ||
611 | if (count == 0) | |
612 | return; | |
613 | ||
614 | space = resize_section_table (table, count); | |
615 | ||
616 | ts = table->sections + space; | |
617 | ||
618 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
619 | { | |
620 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
621 | continue; | |
622 | ||
623 | gdb_assert (ts < table->sections + space + count); | |
624 | ||
625 | ts->addr = obj_section_addr (osect); | |
626 | ts->endaddr = obj_section_endaddr (osect); | |
627 | ts->the_bfd_section = osect->the_bfd_section; | |
628 | ts->owner = (void *) objfile; | |
629 | ||
630 | ts++; | |
631 | } | |
632 | } | |
633 | ||
046ac79f JK |
634 | /* Remove all target sections owned by OWNER. |
635 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
636 | |
637 | void | |
046ac79f | 638 | remove_target_sections (void *owner) |
07b82ea5 PA |
639 | { |
640 | struct target_section *src, *dest; | |
07b82ea5 PA |
641 | struct target_section_table *table = current_target_sections; |
642 | ||
046ac79f JK |
643 | gdb_assert (owner != NULL); |
644 | ||
07b82ea5 PA |
645 | dest = table->sections; |
646 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 647 | if (src->owner != owner) |
07b82ea5 PA |
648 | { |
649 | /* Keep this section. */ | |
650 | if (dest < src) | |
651 | *dest = *src; | |
652 | dest++; | |
653 | } | |
654 | ||
655 | /* If we've dropped any sections, resize the section table. */ | |
656 | if (dest < src) | |
657 | { | |
658 | int old_count; | |
659 | ||
660 | old_count = resize_section_table (table, dest - src); | |
661 | ||
662 | /* If we don't have any more sections to read memory from, | |
663 | remove the file_stratum target from the stack. */ | |
664 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
665 | { |
666 | struct program_space *pspace; | |
667 | ||
668 | ALL_PSPACES (pspace) | |
669 | if (pspace->target_sections.sections | |
670 | != pspace->target_sections.sections_end) | |
671 | return; | |
672 | ||
673 | unpush_target (&exec_ops); | |
674 | } | |
07b82ea5 PA |
675 | } |
676 | } | |
677 | ||
c906108c | 678 | \f |
348f8c02 | 679 | |
1ca49d37 YQ |
680 | enum target_xfer_status |
681 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
682 | ULONGEST len, ULONGEST *xfered_len) | |
683 | { | |
684 | /* It's unduly pedantic to refuse to look at the executable for | |
685 | read-only pieces; so do the equivalent of readonly regions aka | |
686 | QTro packet. */ | |
687 | if (exec_bfd != NULL) | |
688 | { | |
689 | asection *s; | |
690 | bfd_size_type size; | |
691 | bfd_vma vma; | |
692 | ||
693 | for (s = exec_bfd->sections; s; s = s->next) | |
694 | { | |
695 | if ((s->flags & SEC_LOAD) == 0 | |
696 | || (s->flags & SEC_READONLY) == 0) | |
697 | continue; | |
698 | ||
699 | vma = s->vma; | |
700 | size = bfd_get_section_size (s); | |
701 | if (vma <= offset && offset < (vma + size)) | |
702 | { | |
703 | ULONGEST amt; | |
704 | ||
705 | amt = (vma + size) - offset; | |
706 | if (amt > len) | |
707 | amt = len; | |
708 | ||
709 | amt = bfd_get_section_contents (exec_bfd, s, | |
710 | readbuf, offset - vma, amt); | |
711 | ||
712 | if (amt == 0) | |
713 | return TARGET_XFER_EOF; | |
714 | else | |
715 | { | |
716 | *xfered_len = amt; | |
717 | return TARGET_XFER_OK; | |
718 | } | |
719 | } | |
720 | } | |
721 | } | |
722 | ||
723 | /* Indicate failure to find the requested memory block. */ | |
724 | return TARGET_XFER_E_IO; | |
725 | } | |
726 | ||
5a2eb0ef YQ |
727 | /* Appends all read-only memory ranges found in the target section |
728 | table defined by SECTIONS and SECTIONS_END, starting at (and | |
729 | intersected with) MEMADDR for LEN bytes. Returns the augmented | |
730 | VEC. */ | |
731 | ||
732 | static VEC(mem_range_s) * | |
e6ca34fc | 733 | section_table_available_memory (VEC(mem_range_s) *memory, |
424447ee | 734 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
735 | struct target_section *sections, |
736 | struct target_section *sections_end) | |
737 | { | |
738 | struct target_section *p; | |
e6ca34fc PA |
739 | |
740 | for (p = sections; p < sections_end; p++) | |
741 | { | |
2b2848e2 DE |
742 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
743 | p->the_bfd_section) | |
e6ca34fc PA |
744 | & SEC_READONLY) == 0) |
745 | continue; | |
746 | ||
747 | /* Copy the meta-data, adjusted. */ | |
748 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
749 | { | |
750 | ULONGEST lo1, hi1, lo2, hi2; | |
751 | struct mem_range *r; | |
752 | ||
753 | lo1 = memaddr; | |
754 | hi1 = memaddr + len; | |
755 | ||
756 | lo2 = p->addr; | |
757 | hi2 = p->endaddr; | |
758 | ||
759 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
760 | ||
761 | r->start = max (lo1, lo2); | |
762 | r->length = min (hi1, hi2) - r->start; | |
763 | } | |
764 | } | |
765 | ||
766 | return memory; | |
767 | } | |
768 | ||
1ee79381 YQ |
769 | enum target_xfer_status |
770 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
771 | ULONGEST len, ULONGEST *xfered_len) | |
772 | { | |
773 | VEC(mem_range_s) *available_memory = NULL; | |
774 | struct target_section_table *table; | |
775 | struct cleanup *old_chain; | |
776 | mem_range_s *r; | |
777 | int i; | |
778 | ||
779 | table = target_get_section_table (&exec_ops); | |
780 | available_memory = section_table_available_memory (available_memory, | |
781 | offset, len, | |
782 | table->sections, | |
783 | table->sections_end); | |
784 | ||
785 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), | |
786 | &available_memory); | |
787 | ||
788 | normalize_mem_ranges (available_memory); | |
789 | ||
790 | for (i = 0; | |
791 | VEC_iterate (mem_range_s, available_memory, i, r); | |
792 | i++) | |
793 | { | |
794 | if (mem_ranges_overlap (r->start, r->length, offset, len)) | |
795 | { | |
796 | CORE_ADDR end; | |
797 | enum target_xfer_status status; | |
798 | ||
799 | /* Get the intersection window. */ | |
800 | end = min (offset + len, r->start + r->length); | |
801 | ||
802 | gdb_assert (end - offset <= len); | |
803 | ||
804 | if (offset >= r->start) | |
805 | status = exec_read_partial_read_only (readbuf, offset, | |
806 | end - offset, | |
807 | xfered_len); | |
808 | else | |
809 | { | |
810 | *xfered_len = r->start - offset; | |
bc113b4e | 811 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
812 | } |
813 | do_cleanups (old_chain); | |
814 | return status; | |
815 | } | |
816 | } | |
817 | do_cleanups (old_chain); | |
818 | ||
819 | *xfered_len = len; | |
bc113b4e | 820 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
821 | } |
822 | ||
9b409511 | 823 | enum target_xfer_status |
07b82ea5 | 824 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 825 | ULONGEST offset, ULONGEST len, |
9b409511 | 826 | ULONGEST *xfered_len, |
07b82ea5 PA |
827 | struct target_section *sections, |
828 | struct target_section *sections_end, | |
829 | const char *section_name) | |
c906108c | 830 | { |
020cc13c | 831 | int res; |
0542c86d | 832 | struct target_section *p; |
07b82ea5 PA |
833 | ULONGEST memaddr = offset; |
834 | ULONGEST memend = memaddr + len; | |
c906108c | 835 | |
b55e14c7 | 836 | if (len == 0) |
3e43a32a MS |
837 | internal_error (__FILE__, __LINE__, |
838 | _("failed internal consistency check")); | |
c906108c | 839 | |
348f8c02 | 840 | for (p = sections; p < sections_end; p++) |
c906108c | 841 | { |
2b2848e2 DE |
842 | struct bfd_section *asect = p->the_bfd_section; |
843 | bfd *abfd = asect->owner; | |
844 | ||
845 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 846 | continue; /* not the section we need. */ |
c906108c | 847 | if (memaddr >= p->addr) |
3db26b01 JB |
848 | { |
849 | if (memend <= p->endaddr) | |
850 | { | |
851 | /* Entire transfer is within this section. */ | |
07b82ea5 | 852 | if (writebuf) |
2b2848e2 | 853 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 854 | writebuf, memaddr - p->addr, |
85302095 AC |
855 | len); |
856 | else | |
2b2848e2 | 857 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 858 | readbuf, memaddr - p->addr, |
85302095 | 859 | len); |
9b409511 YQ |
860 | |
861 | if (res != 0) | |
862 | { | |
863 | *xfered_len = len; | |
864 | return TARGET_XFER_OK; | |
865 | } | |
866 | else | |
867 | return TARGET_XFER_EOF; | |
3db26b01 JB |
868 | } |
869 | else if (memaddr >= p->endaddr) | |
870 | { | |
871 | /* This section ends before the transfer starts. */ | |
872 | continue; | |
873 | } | |
874 | else | |
875 | { | |
876 | /* This section overlaps the transfer. Just do half. */ | |
877 | len = p->endaddr - memaddr; | |
07b82ea5 | 878 | if (writebuf) |
2b2848e2 | 879 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 880 | writebuf, memaddr - p->addr, |
85302095 AC |
881 | len); |
882 | else | |
2b2848e2 | 883 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 884 | readbuf, memaddr - p->addr, |
85302095 | 885 | len); |
9b409511 YQ |
886 | if (res != 0) |
887 | { | |
888 | *xfered_len = len; | |
889 | return TARGET_XFER_OK; | |
890 | } | |
891 | else | |
892 | return TARGET_XFER_EOF; | |
3db26b01 JB |
893 | } |
894 | } | |
c906108c SS |
895 | } |
896 | ||
9b409511 | 897 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 898 | } |
348f8c02 | 899 | |
70221824 | 900 | static struct target_section_table * |
07b82ea5 | 901 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 902 | { |
07b82ea5 | 903 | return current_target_sections; |
348f8c02 PA |
904 | } |
905 | ||
9b409511 | 906 | static enum target_xfer_status |
07b82ea5 PA |
907 | exec_xfer_partial (struct target_ops *ops, enum target_object object, |
908 | const char *annex, gdb_byte *readbuf, | |
909 | const gdb_byte *writebuf, | |
9b409511 | 910 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
348f8c02 | 911 | { |
07b82ea5 PA |
912 | struct target_section_table *table = target_get_section_table (ops); |
913 | ||
914 | if (object == TARGET_OBJECT_MEMORY) | |
915 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 916 | offset, len, xfered_len, |
07b82ea5 PA |
917 | table->sections, |
918 | table->sections_end, | |
919 | NULL); | |
920 | else | |
2ed4b548 | 921 | return TARGET_XFER_E_IO; |
348f8c02 | 922 | } |
c906108c | 923 | \f |
c5aa993b | 924 | |
c906108c | 925 | void |
07b82ea5 | 926 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 927 | { |
5af949e3 | 928 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 929 | struct target_section *p; |
17a912b6 | 930 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 931 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 932 | |
c5aa993b | 933 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 934 | wrap_here (" "); |
a3f17187 | 935 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 936 | if (abfd == exec_bfd) |
51bee8e9 | 937 | { |
3e43a32a MS |
938 | /* gcc-3.4 does not like the initialization in |
939 | <p == t->sections_end>. */ | |
d904de5b | 940 | bfd_vma displacement = 0; |
2f1bdd26 | 941 | bfd_vma entry_point; |
51bee8e9 JK |
942 | |
943 | for (p = t->sections; p < t->sections_end; p++) | |
944 | { | |
2b2848e2 DE |
945 | struct bfd_section *psect = p->the_bfd_section; |
946 | bfd *pbfd = psect->owner; | |
51bee8e9 | 947 | |
2b2848e2 | 948 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
949 | != (SEC_ALLOC | SEC_LOAD)) |
950 | continue; | |
951 | ||
2b2848e2 DE |
952 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
953 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
954 | + bfd_get_section_size (psect))) | |
51bee8e9 | 955 | { |
2b2848e2 | 956 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
957 | break; |
958 | } | |
959 | } | |
960 | if (p == t->sections_end) | |
b37520b6 | 961 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 962 | bfd_get_filename (abfd)); |
51bee8e9 | 963 | |
2f1bdd26 MGD |
964 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
965 | bfd_get_start_address (abfd) | |
966 | + displacement); | |
51bee8e9 | 967 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 968 | paddress (gdbarch, entry_point)); |
51bee8e9 | 969 | } |
07b82ea5 | 970 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 971 | { |
2b2848e2 DE |
972 | struct bfd_section *psect = p->the_bfd_section; |
973 | bfd *pbfd = psect->owner; | |
974 | ||
bb599908 PH |
975 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
976 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
977 | |
978 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
979 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
980 | since most output will then be much wider than necessary. It | |
981 | may make sense to test the size of the file and choose the | |
982 | format string accordingly. */ | |
a3f17187 | 983 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
984 | if (info_verbose) |
985 | printf_filtered (" @ %s", | |
2b2848e2 DE |
986 | hex_string_custom (psect->filepos, 8)); |
987 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
988 | if (pbfd != abfd) | |
989 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
990 | printf_filtered ("\n"); |
991 | } | |
992 | } | |
993 | ||
994 | static void | |
fba45db2 | 995 | exec_files_info (struct target_ops *t) |
c906108c | 996 | { |
57008375 JK |
997 | if (exec_bfd) |
998 | print_section_info (current_target_sections, exec_bfd); | |
999 | else | |
1000 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
1001 | } |
1002 | ||
1003 | static void | |
fba45db2 | 1004 | set_section_command (char *args, int from_tty) |
c906108c | 1005 | { |
0542c86d | 1006 | struct target_section *p; |
c906108c SS |
1007 | char *secname; |
1008 | unsigned seclen; | |
1009 | unsigned long secaddr; | |
1010 | char secprint[100]; | |
1011 | long offset; | |
07b82ea5 | 1012 | struct target_section_table *table; |
c906108c SS |
1013 | |
1014 | if (args == 0) | |
8a3fe4f8 | 1015 | error (_("Must specify section name and its virtual address")); |
c906108c | 1016 | |
0963b4bd | 1017 | /* Parse out section name. */ |
c5aa993b | 1018 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1019 | seclen = args - secname; |
1020 | ||
0963b4bd | 1021 | /* Parse out new virtual address. */ |
c906108c SS |
1022 | secaddr = parse_and_eval_address (args); |
1023 | ||
07b82ea5 PA |
1024 | table = current_target_sections; |
1025 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1026 | { |
57008375 | 1027 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 1028 | p->the_bfd_section), seclen) |
57008375 | 1029 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
1030 | { |
1031 | offset = secaddr - p->addr; | |
1032 | p->addr += offset; | |
1033 | p->endaddr += offset; | |
1034 | if (from_tty) | |
1035 | exec_files_info (&exec_ops); | |
1036 | return; | |
1037 | } | |
c906108c | 1038 | } |
c906108c SS |
1039 | if (seclen >= sizeof (secprint)) |
1040 | seclen = sizeof (secprint) - 1; | |
1041 | strncpy (secprint, secname, seclen); | |
1042 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1043 | error (_("Section %s not found"), secprint); |
c906108c SS |
1044 | } |
1045 | ||
30510692 DJ |
1046 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1047 | it to ADDRESS. */ | |
c1bd25fd DJ |
1048 | |
1049 | void | |
1050 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1051 | { | |
0542c86d | 1052 | struct target_section *p; |
07b82ea5 | 1053 | struct target_section_table *table; |
c1bd25fd | 1054 | |
07b82ea5 PA |
1055 | table = current_target_sections; |
1056 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1057 | { |
2b2848e2 | 1058 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1059 | && index == p->the_bfd_section->index) |
c1bd25fd | 1060 | { |
30510692 | 1061 | p->endaddr += address - p->addr; |
c1bd25fd | 1062 | p->addr = address; |
c1bd25fd DJ |
1063 | } |
1064 | } | |
1065 | } | |
1066 | ||
c906108c SS |
1067 | /* If mourn is being called in all the right places, this could be say |
1068 | `gdb internal error' (since generic_mourn calls | |
1069 | breakpoint_init_inferior). */ | |
1070 | ||
1071 | static int | |
3db08215 MM |
1072 | ignore (struct target_ops *ops, struct gdbarch *gdbarch, |
1073 | struct bp_target_info *bp_tgt) | |
c906108c SS |
1074 | { |
1075 | return 0; | |
1076 | } | |
1077 | ||
73971819 PA |
1078 | /* Implement the to_remove_breakpoint method. */ |
1079 | ||
1080 | static int | |
1081 | exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, | |
1082 | struct bp_target_info *bp_tgt, | |
1083 | enum remove_bp_reason reason) | |
1084 | { | |
1085 | return 0; | |
1086 | } | |
1087 | ||
c35b1492 PA |
1088 | static int |
1089 | exec_has_memory (struct target_ops *ops) | |
1090 | { | |
1091 | /* We can provide memory if we have any file/target sections to read | |
1092 | from. */ | |
1093 | return (current_target_sections->sections | |
1094 | != current_target_sections->sections_end); | |
1095 | } | |
1096 | ||
83814951 TT |
1097 | static char * |
1098 | exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size) | |
1099 | { | |
1100 | error (_("Can't create a corefile")); | |
1101 | } | |
be4d1333 | 1102 | |
c906108c SS |
1103 | /* Fill in the exec file target vector. Very few entries need to be |
1104 | defined. */ | |
1105 | ||
be4d1333 | 1106 | static void |
fba45db2 | 1107 | init_exec_ops (void) |
c906108c SS |
1108 | { |
1109 | exec_ops.to_shortname = "exec"; | |
1110 | exec_ops.to_longname = "Local exec file"; | |
1111 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
1112 | Specify the filename of the executable file."; | |
1adeb98a | 1113 | exec_ops.to_open = exec_open; |
6c95b8df | 1114 | exec_ops.to_close = exec_close_1; |
07b82ea5 PA |
1115 | exec_ops.to_xfer_partial = exec_xfer_partial; |
1116 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
1117 | exec_ops.to_files_info = exec_files_info; |
1118 | exec_ops.to_insert_breakpoint = ignore; | |
73971819 | 1119 | exec_ops.to_remove_breakpoint = exec_remove_breakpoint; |
c906108c | 1120 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 1121 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 1122 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
b427c1bc | 1123 | exec_ops.to_find_memory_regions = objfile_find_memory_regions; |
c5aa993b | 1124 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
1125 | } |
1126 | ||
1127 | void | |
fba45db2 | 1128 | _initialize_exec (void) |
c906108c SS |
1129 | { |
1130 | struct cmd_list_element *c; | |
1131 | ||
1132 | init_exec_ops (); | |
1133 | ||
1134 | if (!dbx_commands) | |
1135 | { | |
1a966eab AC |
1136 | c = add_cmd ("file", class_files, file_command, _("\ |
1137 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1138 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1139 | and it is the program executed when you use the `run' command.\n\ | |
1140 | If FILE cannot be found as specified, your execution directory path\n\ | |
1141 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1142 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1143 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1144 | } |
1145 | ||
1a966eab AC |
1146 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1147 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1148 | If FILE cannot be found as specified, your execution directory path\n\ |
1149 | is searched for a command of that name.\n\ | |
1a966eab | 1150 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1151 | set_cmd_completer (c, filename_completer); |
c906108c | 1152 | |
1bedd215 AC |
1153 | add_com ("section", class_files, set_section_command, _("\ |
1154 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1155 | This can be used if the exec file does not contain section addresses,\n\ |
1156 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1157 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1158 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1159 | |
5bf193a2 AC |
1160 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1161 | Set writing into executable and core files."), _("\ | |
1162 | Show writing into executable and core files."), NULL, | |
1163 | NULL, | |
920d2a44 | 1164 | show_write_files, |
5bf193a2 | 1165 | &setlist, &showlist); |
c5aa993b | 1166 | |
9852c492 | 1167 | add_target_with_completer (&exec_ops, filename_completer); |
c906108c | 1168 | } |