Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
61baf725 | 3 | Copyright (C) 1988-2017 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 | ||
ecf45d2c | 139 | /* See exec.h. */ |
a10de604 GB |
140 | |
141 | void | |
ecf45d2c SL |
142 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
143 | symfile_add_flags add_flags) | |
a10de604 | 144 | { |
88178e82 | 145 | struct cleanup *old_chain; |
57d1de9c | 146 | struct gdb_exception prev_err = exception_none; |
a10de604 | 147 | |
ecf45d2c | 148 | old_chain = make_cleanup (free_current_contents, &prev_err.message); |
57d1de9c LM |
149 | |
150 | /* exec_file_attach and symbol_file_add_main may throw an error if the file | |
151 | cannot be opened either locally or remotely. | |
152 | ||
153 | This happens for example, when the file is first found in the local | |
154 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
155 | exist in the target filesystem, or when the file does exist, but | |
156 | is not readable. | |
88178e82 | 157 | |
57d1de9c LM |
158 | Even without a symbol file, the remote-based debugging session should |
159 | continue normally instead of ending abruptly. Hence we catch thrown | |
160 | errors/exceptions in the following code. */ | |
161 | TRY | |
162 | { | |
ecf45d2c SL |
163 | /* We must do this step even if exec_file_host is NULL, so that |
164 | exec_file_attach will clear state. */ | |
165 | exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE); | |
57d1de9c LM |
166 | } |
167 | CATCH (err, RETURN_MASK_ERROR) | |
168 | { | |
169 | if (err.message != NULL) | |
170 | warning ("%s", err.message); | |
171 | ||
172 | prev_err = err; | |
173 | ||
174 | /* Save message so it doesn't get trashed by the catch below. */ | |
b5e1db87 LM |
175 | if (err.message != NULL) |
176 | prev_err.message = xstrdup (err.message); | |
57d1de9c LM |
177 | } |
178 | END_CATCH | |
179 | ||
ecf45d2c | 180 | if (exec_file_host != NULL) |
57d1de9c | 181 | { |
ecf45d2c SL |
182 | TRY |
183 | { | |
184 | symbol_file_add_main (exec_file_host, add_flags); | |
185 | } | |
186 | CATCH (err, RETURN_MASK_ERROR) | |
187 | { | |
188 | if (!exception_print_same (prev_err, err)) | |
189 | warning ("%s", err.message); | |
190 | } | |
191 | END_CATCH | |
57d1de9c | 192 | } |
ecf45d2c SL |
193 | |
194 | do_cleanups (old_chain); | |
195 | } | |
196 | ||
197 | /* See gdbcore.h. */ | |
198 | ||
199 | void | |
200 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
201 | { | |
202 | char *exec_file_target, *exec_file_host; | |
203 | struct cleanup *old_chain; | |
204 | symfile_add_flags add_flags = 0; | |
205 | ||
206 | /* Do nothing if we already have an executable filename. */ | |
207 | if (get_exec_file (0) != NULL) | |
208 | return; | |
209 | ||
210 | /* Try to determine a filename from the process itself. */ | |
211 | exec_file_target = target_pid_to_exec_file (pid); | |
212 | if (exec_file_target == NULL) | |
57d1de9c | 213 | { |
ecf45d2c SL |
214 | warning (_("No executable has been specified and target does not " |
215 | "support\n" | |
216 | "determining executable automatically. " | |
217 | "Try using the \"file\" command.")); | |
218 | return; | |
57d1de9c | 219 | } |
88178e82 | 220 | |
ecf45d2c SL |
221 | exec_file_host = exec_file_find (exec_file_target, NULL); |
222 | old_chain = make_cleanup (xfree, exec_file_host); | |
223 | ||
224 | if (defer_bp_reset) | |
225 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
226 | ||
227 | if (from_tty) | |
228 | add_flags |= SYMFILE_VERBOSE; | |
229 | ||
230 | /* Attempt to open the exec file. */ | |
231 | try_open_exec_file (exec_file_host, current_inferior (), add_flags); | |
88178e82 | 232 | do_cleanups (old_chain); |
a10de604 GB |
233 | } |
234 | ||
907083d1 | 235 | /* Set FILENAME as the new exec file. |
c906108c | 236 | |
c5aa993b JM |
237 | This function is intended to be behave essentially the same |
238 | as exec_file_command, except that the latter will detect when | |
239 | a target is being debugged, and will ask the user whether it | |
240 | should be shut down first. (If the answer is "no", then the | |
241 | new file is ignored.) | |
c906108c | 242 | |
c5aa993b JM |
243 | This file is used by exec_file_command, to do the work of opening |
244 | and processing the exec file after any prompting has happened. | |
c906108c | 245 | |
c5aa993b JM |
246 | And, it is used by child_attach, when the attach command was |
247 | given a pid but not a exec pathname, and the attach command could | |
248 | figure out the pathname from the pid. (In this case, we shouldn't | |
249 | ask the user whether the current target should be shut down -- | |
907083d1 | 250 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
251 | |
252 | void | |
5f08566b | 253 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 254 | { |
9b333ba3 TT |
255 | struct cleanup *cleanups; |
256 | ||
257 | /* First, acquire a reference to the current exec_bfd. We release | |
258 | this at the end of the function; but acquiring it now lets the | |
259 | BFD cache return it if this call refers to the same file. */ | |
260 | gdb_bfd_ref (exec_bfd); | |
192b62ce TT |
261 | gdb_bfd_ref_ptr exec_bfd_holder (exec_bfd); |
262 | ||
263 | cleanups = make_cleanup (null_cleanup, NULL); | |
9b333ba3 | 264 | |
c906108c | 265 | /* Remove any previous exec file. */ |
6c95b8df | 266 | exec_close (); |
c906108c SS |
267 | |
268 | /* Now open and digest the file the user requested, if any. */ | |
269 | ||
1adeb98a FN |
270 | if (!filename) |
271 | { | |
272 | if (from_tty) | |
a3f17187 | 273 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
274 | |
275 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
276 | } |
277 | else | |
c906108c | 278 | { |
64c0b5de | 279 | int load_via_target = 0; |
1f0c4988 | 280 | char *scratch_pathname, *canonical_pathname; |
c906108c | 281 | int scratch_chan; |
07b82ea5 | 282 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 283 | char **matching; |
c5aa993b | 284 | |
64c0b5de GB |
285 | if (is_target_filename (filename)) |
286 | { | |
287 | if (target_filesystem_is_local ()) | |
288 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
289 | else | |
290 | load_via_target = 1; | |
291 | } | |
292 | ||
293 | if (load_via_target) | |
c5aa993b | 294 | { |
64c0b5de GB |
295 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
296 | if (write_files) | |
297 | warning (_("writing into executable files is " | |
298 | "not supported for %s sysroots"), | |
299 | TARGET_SYSROOT_PREFIX); | |
300 | ||
301 | scratch_pathname = xstrdup (filename); | |
302 | make_cleanup (xfree, scratch_pathname); | |
303 | ||
304 | scratch_chan = -1; | |
d7f9d729 | 305 | |
64c0b5de | 306 | canonical_pathname = scratch_pathname; |
c5aa993b | 307 | } |
64c0b5de GB |
308 | else |
309 | { | |
310 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
311 | filename, write_files ? | |
312 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
313 | &scratch_pathname); | |
314 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) | |
315 | if (scratch_chan < 0) | |
316 | { | |
0ae1c716 | 317 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
318 | |
319 | strcat (strcpy (exename, filename), ".exe"); | |
320 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
321 | exename, write_files ? | |
322 | O_RDWR | O_BINARY | |
323 | : O_RDONLY | O_BINARY, | |
324 | &scratch_pathname); | |
325 | } | |
c906108c | 326 | #endif |
64c0b5de GB |
327 | if (scratch_chan < 0) |
328 | perror_with_name (filename); | |
a4453b7e | 329 | |
64c0b5de | 330 | make_cleanup (xfree, scratch_pathname); |
a4453b7e | 331 | |
64c0b5de GB |
332 | /* gdb_bfd_open (and its variants) prefers canonicalized |
333 | pathname for better BFD caching. */ | |
334 | canonical_pathname = gdb_realpath (scratch_pathname); | |
335 | make_cleanup (xfree, canonical_pathname); | |
336 | } | |
1f0c4988 | 337 | |
192b62ce | 338 | gdb_bfd_ref_ptr temp; |
64c0b5de | 339 | if (write_files && !load_via_target) |
192b62ce TT |
340 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
341 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 342 | else |
192b62ce TT |
343 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
344 | exec_bfd = temp.release (); | |
c906108c SS |
345 | |
346 | if (!exec_bfd) | |
9fe4a216 | 347 | { |
d5131498 | 348 | error (_("\"%s\": could not open as an executable file: %s."), |
9fe4a216 TT |
349 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
350 | } | |
c906108c | 351 | |
64c0b5de GB |
352 | /* gdb_realpath_keepfile resolves symlinks on the local |
353 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 354 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
355 | if (load_via_target) |
356 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
357 | else | |
358 | exec_filename = gdb_realpath_keepfile (scratch_pathname); | |
1f0c4988 | 359 | |
d18b8b7a | 360 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
361 | { |
362 | /* Make sure to close exec_bfd, or else "run" might try to use | |
363 | it. */ | |
6c95b8df | 364 | exec_close (); |
8a3fe4f8 | 365 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
366 | scratch_pathname, |
367 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
368 | } |
369 | ||
07b82ea5 | 370 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
371 | { |
372 | /* Make sure to close exec_bfd, or else "run" might try to use | |
373 | it. */ | |
6c95b8df | 374 | exec_close (); |
8a3fe4f8 | 375 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
376 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
377 | } | |
378 | ||
c04ea773 DJ |
379 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
380 | ||
c906108c SS |
381 | validate_files (); |
382 | ||
383 | set_gdbarch_from_file (exec_bfd); | |
384 | ||
07b82ea5 | 385 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
386 | list of sections. This possibly pushes the exec_ops |
387 | target. */ | |
ed9eebaf | 388 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 389 | xfree (sections); |
c906108c SS |
390 | |
391 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
392 | if (deprecated_exec_file_display_hook) |
393 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 394 | } |
9b333ba3 TT |
395 | |
396 | do_cleanups (cleanups); | |
397 | ||
ce7d4522 | 398 | bfd_cache_close_all (); |
781b42b0 | 399 | observer_notify_executable_changed (); |
c906108c SS |
400 | } |
401 | ||
402 | /* Process the first arg in ARGS as the new exec file. | |
403 | ||
c5aa993b JM |
404 | Note that we have to explicitly ignore additional args, since we can |
405 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
406 | which can take multiple args. |
407 | ||
0963b4bd | 408 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 409 | |
1adeb98a | 410 | static void |
fba45db2 | 411 | exec_file_command (char *args, int from_tty) |
c906108c | 412 | { |
1adeb98a FN |
413 | char **argv; |
414 | char *filename; | |
4c42eaff DJ |
415 | |
416 | if (from_tty && target_has_execution | |
417 | && !query (_("A program is being debugged already.\n" | |
418 | "Are you sure you want to change the file? "))) | |
419 | error (_("File not changed.")); | |
1adeb98a FN |
420 | |
421 | if (args) | |
422 | { | |
f7545552 TT |
423 | struct cleanup *cleanups; |
424 | ||
1adeb98a FN |
425 | /* Scan through the args and pick up the first non option arg |
426 | as the filename. */ | |
427 | ||
d1a41061 | 428 | argv = gdb_buildargv (args); |
f7545552 | 429 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
430 | |
431 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
432 | {; | |
433 | } | |
434 | if (*argv == NULL) | |
8a3fe4f8 | 435 | error (_("No executable file name was specified")); |
1adeb98a FN |
436 | |
437 | filename = tilde_expand (*argv); | |
438 | make_cleanup (xfree, filename); | |
439 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
440 | |
441 | do_cleanups (cleanups); | |
1adeb98a FN |
442 | } |
443 | else | |
444 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
445 | } |
446 | ||
0963b4bd | 447 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
448 | What a novelty. Why did GDB go through four major releases before this |
449 | command was added? */ | |
450 | ||
451 | static void | |
fba45db2 | 452 | file_command (char *arg, int from_tty) |
c906108c SS |
453 | { |
454 | /* FIXME, if we lose on reading the symbol file, we should revert | |
455 | the exec file, but that's rough. */ | |
456 | exec_file_command (arg, from_tty); | |
457 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
458 | if (deprecated_file_changed_hook) |
459 | deprecated_file_changed_hook (arg); | |
c906108c | 460 | } |
c906108c | 461 | \f |
c5aa993b | 462 | |
0963b4bd | 463 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
464 | table_pp_char is a char * to get it through bfd_map_over_sections; |
465 | we cast it back to its proper type. */ | |
466 | ||
467 | static void | |
7be0c536 AC |
468 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
469 | void *table_pp_char) | |
c906108c | 470 | { |
0542c86d | 471 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
472 | flagword aflag; |
473 | ||
2b2848e2 DE |
474 | gdb_assert (abfd == asect->owner); |
475 | ||
0f5d55d8 JB |
476 | /* Check the section flags, but do not discard zero-length sections, since |
477 | some symbols may still be attached to this section. For instance, we | |
478 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
479 | section to which a symbol named "_end" was attached. The address | |
480 | of this symbol still needs to be relocated. */ | |
c906108c SS |
481 | aflag = bfd_get_section_flags (abfd, asect); |
482 | if (!(aflag & SEC_ALLOC)) | |
483 | return; | |
0f5d55d8 | 484 | |
046ac79f | 485 | (*table_pp)->owner = NULL; |
c906108c SS |
486 | (*table_pp)->the_bfd_section = asect; |
487 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
488 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
489 | (*table_pp)++; | |
490 | } | |
491 | ||
a5b1fd27 DE |
492 | /* See exec.h. */ |
493 | ||
494 | void | |
495 | clear_section_table (struct target_section_table *table) | |
496 | { | |
497 | xfree (table->sections); | |
498 | table->sections = table->sections_end = NULL; | |
499 | } | |
500 | ||
501 | /* Resize section table TABLE by ADJUSTMENT. | |
502 | ADJUSTMENT may be negative, in which case the caller must have already | |
503 | removed the sections being deleted. | |
504 | Returns the old size. */ | |
505 | ||
506 | static int | |
507 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 508 | { |
07b82ea5 PA |
509 | int old_count; |
510 | int new_count; | |
511 | ||
07b82ea5 PA |
512 | old_count = table->sections_end - table->sections; |
513 | ||
a5b1fd27 | 514 | new_count = adjustment + old_count; |
07b82ea5 PA |
515 | |
516 | if (new_count) | |
517 | { | |
224c3ddb SM |
518 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
519 | new_count); | |
07b82ea5 PA |
520 | table->sections_end = table->sections + new_count; |
521 | } | |
522 | else | |
a5b1fd27 | 523 | clear_section_table (table); |
07b82ea5 PA |
524 | |
525 | return old_count; | |
526 | } | |
527 | ||
c906108c SS |
528 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
529 | Returns 0 if OK, 1 on error. */ | |
530 | ||
531 | int | |
0542c86d PA |
532 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
533 | struct target_section **end) | |
c906108c SS |
534 | { |
535 | unsigned count; | |
536 | ||
537 | count = bfd_count_sections (some_bfd); | |
538 | if (*start) | |
b8c9b27d | 539 | xfree (* start); |
8d749320 | 540 | *start = XNEWVEC (struct target_section, count); |
c906108c | 541 | *end = *start; |
c5aa993b | 542 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 543 | if (*end > *start + count) |
3e43a32a MS |
544 | internal_error (__FILE__, __LINE__, |
545 | _("failed internal consistency check")); | |
c906108c SS |
546 | /* We could realloc the table, but it probably loses for most files. */ |
547 | return 0; | |
548 | } | |
07b82ea5 PA |
549 | |
550 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
551 | current set of target sections. */ | |
552 | ||
553 | void | |
046ac79f | 554 | add_target_sections (void *owner, |
ed9eebaf | 555 | struct target_section *sections, |
07b82ea5 PA |
556 | struct target_section *sections_end) |
557 | { | |
558 | int count; | |
559 | struct target_section_table *table = current_target_sections; | |
560 | ||
561 | count = sections_end - sections; | |
562 | ||
563 | if (count > 0) | |
564 | { | |
565 | int space = resize_section_table (table, count); | |
ed9eebaf | 566 | int i; |
d7f9d729 | 567 | |
ed9eebaf TT |
568 | for (i = 0; i < count; ++i) |
569 | { | |
570 | table->sections[space + i] = sections[i]; | |
046ac79f | 571 | table->sections[space + i].owner = owner; |
ed9eebaf | 572 | } |
07b82ea5 PA |
573 | |
574 | /* If these are the first file sections we can provide memory | |
575 | from, push the file_stratum target. */ | |
ab16fce8 TT |
576 | if (!target_is_pushed (&exec_ops)) |
577 | push_target (&exec_ops); | |
07b82ea5 PA |
578 | } |
579 | } | |
580 | ||
76ad5e1e NB |
581 | /* Add the sections of OBJFILE to the current set of target sections. */ |
582 | ||
583 | void | |
584 | add_target_sections_of_objfile (struct objfile *objfile) | |
585 | { | |
586 | struct target_section_table *table = current_target_sections; | |
587 | struct obj_section *osect; | |
588 | int space; | |
589 | unsigned count = 0; | |
590 | struct target_section *ts; | |
591 | ||
592 | if (objfile == NULL) | |
593 | return; | |
594 | ||
595 | /* Compute the number of sections to add. */ | |
596 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
597 | { | |
598 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
599 | continue; | |
600 | count++; | |
601 | } | |
602 | ||
603 | if (count == 0) | |
604 | return; | |
605 | ||
606 | space = resize_section_table (table, count); | |
607 | ||
608 | ts = table->sections + space; | |
609 | ||
610 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
611 | { | |
612 | if (bfd_get_section_size (osect->the_bfd_section) == 0) | |
613 | continue; | |
614 | ||
615 | gdb_assert (ts < table->sections + space + count); | |
616 | ||
617 | ts->addr = obj_section_addr (osect); | |
618 | ts->endaddr = obj_section_endaddr (osect); | |
619 | ts->the_bfd_section = osect->the_bfd_section; | |
620 | ts->owner = (void *) objfile; | |
621 | ||
622 | ts++; | |
623 | } | |
624 | } | |
625 | ||
046ac79f JK |
626 | /* Remove all target sections owned by OWNER. |
627 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
628 | |
629 | void | |
046ac79f | 630 | remove_target_sections (void *owner) |
07b82ea5 PA |
631 | { |
632 | struct target_section *src, *dest; | |
07b82ea5 PA |
633 | struct target_section_table *table = current_target_sections; |
634 | ||
046ac79f JK |
635 | gdb_assert (owner != NULL); |
636 | ||
07b82ea5 PA |
637 | dest = table->sections; |
638 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 639 | if (src->owner != owner) |
07b82ea5 PA |
640 | { |
641 | /* Keep this section. */ | |
642 | if (dest < src) | |
643 | *dest = *src; | |
644 | dest++; | |
645 | } | |
646 | ||
647 | /* If we've dropped any sections, resize the section table. */ | |
648 | if (dest < src) | |
649 | { | |
650 | int old_count; | |
651 | ||
652 | old_count = resize_section_table (table, dest - src); | |
653 | ||
654 | /* If we don't have any more sections to read memory from, | |
655 | remove the file_stratum target from the stack. */ | |
656 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
657 | { |
658 | struct program_space *pspace; | |
659 | ||
660 | ALL_PSPACES (pspace) | |
661 | if (pspace->target_sections.sections | |
662 | != pspace->target_sections.sections_end) | |
663 | return; | |
664 | ||
665 | unpush_target (&exec_ops); | |
666 | } | |
07b82ea5 PA |
667 | } |
668 | } | |
669 | ||
c906108c | 670 | \f |
348f8c02 | 671 | |
1ca49d37 YQ |
672 | enum target_xfer_status |
673 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
674 | ULONGEST len, ULONGEST *xfered_len) | |
675 | { | |
676 | /* It's unduly pedantic to refuse to look at the executable for | |
677 | read-only pieces; so do the equivalent of readonly regions aka | |
678 | QTro packet. */ | |
679 | if (exec_bfd != NULL) | |
680 | { | |
681 | asection *s; | |
682 | bfd_size_type size; | |
683 | bfd_vma vma; | |
684 | ||
685 | for (s = exec_bfd->sections; s; s = s->next) | |
686 | { | |
687 | if ((s->flags & SEC_LOAD) == 0 | |
688 | || (s->flags & SEC_READONLY) == 0) | |
689 | continue; | |
690 | ||
691 | vma = s->vma; | |
692 | size = bfd_get_section_size (s); | |
693 | if (vma <= offset && offset < (vma + size)) | |
694 | { | |
695 | ULONGEST amt; | |
696 | ||
697 | amt = (vma + size) - offset; | |
698 | if (amt > len) | |
699 | amt = len; | |
700 | ||
701 | amt = bfd_get_section_contents (exec_bfd, s, | |
702 | readbuf, offset - vma, amt); | |
703 | ||
704 | if (amt == 0) | |
705 | return TARGET_XFER_EOF; | |
706 | else | |
707 | { | |
708 | *xfered_len = amt; | |
709 | return TARGET_XFER_OK; | |
710 | } | |
711 | } | |
712 | } | |
713 | } | |
714 | ||
715 | /* Indicate failure to find the requested memory block. */ | |
716 | return TARGET_XFER_E_IO; | |
717 | } | |
718 | ||
5a2eb0ef YQ |
719 | /* Appends all read-only memory ranges found in the target section |
720 | table defined by SECTIONS and SECTIONS_END, starting at (and | |
721 | intersected with) MEMADDR for LEN bytes. Returns the augmented | |
722 | VEC. */ | |
723 | ||
724 | static VEC(mem_range_s) * | |
e6ca34fc | 725 | section_table_available_memory (VEC(mem_range_s) *memory, |
424447ee | 726 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
727 | struct target_section *sections, |
728 | struct target_section *sections_end) | |
729 | { | |
730 | struct target_section *p; | |
e6ca34fc PA |
731 | |
732 | for (p = sections; p < sections_end; p++) | |
733 | { | |
2b2848e2 DE |
734 | if ((bfd_get_section_flags (p->the_bfd_section->owner, |
735 | p->the_bfd_section) | |
e6ca34fc PA |
736 | & SEC_READONLY) == 0) |
737 | continue; | |
738 | ||
739 | /* Copy the meta-data, adjusted. */ | |
740 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
741 | { | |
742 | ULONGEST lo1, hi1, lo2, hi2; | |
743 | struct mem_range *r; | |
744 | ||
745 | lo1 = memaddr; | |
746 | hi1 = memaddr + len; | |
747 | ||
748 | lo2 = p->addr; | |
749 | hi2 = p->endaddr; | |
750 | ||
751 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
752 | ||
325fac50 PA |
753 | r->start = std::max (lo1, lo2); |
754 | r->length = std::min (hi1, hi2) - r->start; | |
e6ca34fc PA |
755 | } |
756 | } | |
757 | ||
758 | return memory; | |
759 | } | |
760 | ||
1ee79381 YQ |
761 | enum target_xfer_status |
762 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
763 | ULONGEST len, ULONGEST *xfered_len) | |
764 | { | |
765 | VEC(mem_range_s) *available_memory = NULL; | |
766 | struct target_section_table *table; | |
767 | struct cleanup *old_chain; | |
768 | mem_range_s *r; | |
769 | int i; | |
770 | ||
771 | table = target_get_section_table (&exec_ops); | |
772 | available_memory = section_table_available_memory (available_memory, | |
773 | offset, len, | |
774 | table->sections, | |
775 | table->sections_end); | |
776 | ||
777 | old_chain = make_cleanup (VEC_cleanup(mem_range_s), | |
778 | &available_memory); | |
779 | ||
780 | normalize_mem_ranges (available_memory); | |
781 | ||
782 | for (i = 0; | |
783 | VEC_iterate (mem_range_s, available_memory, i, r); | |
784 | i++) | |
785 | { | |
786 | if (mem_ranges_overlap (r->start, r->length, offset, len)) | |
787 | { | |
788 | CORE_ADDR end; | |
789 | enum target_xfer_status status; | |
790 | ||
791 | /* Get the intersection window. */ | |
768adc05 | 792 | end = std::min<CORE_ADDR> (offset + len, r->start + r->length); |
1ee79381 YQ |
793 | |
794 | gdb_assert (end - offset <= len); | |
795 | ||
796 | if (offset >= r->start) | |
797 | status = exec_read_partial_read_only (readbuf, offset, | |
798 | end - offset, | |
799 | xfered_len); | |
800 | else | |
801 | { | |
802 | *xfered_len = r->start - offset; | |
bc113b4e | 803 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
804 | } |
805 | do_cleanups (old_chain); | |
806 | return status; | |
807 | } | |
808 | } | |
809 | do_cleanups (old_chain); | |
810 | ||
811 | *xfered_len = len; | |
bc113b4e | 812 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
813 | } |
814 | ||
9b409511 | 815 | enum target_xfer_status |
07b82ea5 | 816 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 817 | ULONGEST offset, ULONGEST len, |
9b409511 | 818 | ULONGEST *xfered_len, |
07b82ea5 PA |
819 | struct target_section *sections, |
820 | struct target_section *sections_end, | |
821 | const char *section_name) | |
c906108c | 822 | { |
020cc13c | 823 | int res; |
0542c86d | 824 | struct target_section *p; |
07b82ea5 PA |
825 | ULONGEST memaddr = offset; |
826 | ULONGEST memend = memaddr + len; | |
c906108c | 827 | |
b55e14c7 | 828 | if (len == 0) |
3e43a32a MS |
829 | internal_error (__FILE__, __LINE__, |
830 | _("failed internal consistency check")); | |
c906108c | 831 | |
348f8c02 | 832 | for (p = sections; p < sections_end; p++) |
c906108c | 833 | { |
2b2848e2 DE |
834 | struct bfd_section *asect = p->the_bfd_section; |
835 | bfd *abfd = asect->owner; | |
836 | ||
837 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 838 | continue; /* not the section we need. */ |
c906108c | 839 | if (memaddr >= p->addr) |
3db26b01 JB |
840 | { |
841 | if (memend <= p->endaddr) | |
842 | { | |
843 | /* Entire transfer is within this section. */ | |
07b82ea5 | 844 | if (writebuf) |
2b2848e2 | 845 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 846 | writebuf, memaddr - p->addr, |
85302095 AC |
847 | len); |
848 | else | |
2b2848e2 | 849 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 850 | readbuf, memaddr - p->addr, |
85302095 | 851 | len); |
9b409511 YQ |
852 | |
853 | if (res != 0) | |
854 | { | |
855 | *xfered_len = len; | |
856 | return TARGET_XFER_OK; | |
857 | } | |
858 | else | |
859 | return TARGET_XFER_EOF; | |
3db26b01 JB |
860 | } |
861 | else if (memaddr >= p->endaddr) | |
862 | { | |
863 | /* This section ends before the transfer starts. */ | |
864 | continue; | |
865 | } | |
866 | else | |
867 | { | |
868 | /* This section overlaps the transfer. Just do half. */ | |
869 | len = p->endaddr - memaddr; | |
07b82ea5 | 870 | if (writebuf) |
2b2848e2 | 871 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 872 | writebuf, memaddr - p->addr, |
85302095 AC |
873 | len); |
874 | else | |
2b2848e2 | 875 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 876 | readbuf, memaddr - p->addr, |
85302095 | 877 | len); |
9b409511 YQ |
878 | if (res != 0) |
879 | { | |
880 | *xfered_len = len; | |
881 | return TARGET_XFER_OK; | |
882 | } | |
883 | else | |
884 | return TARGET_XFER_EOF; | |
3db26b01 JB |
885 | } |
886 | } | |
c906108c SS |
887 | } |
888 | ||
9b409511 | 889 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 890 | } |
348f8c02 | 891 | |
70221824 | 892 | static struct target_section_table * |
07b82ea5 | 893 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 894 | { |
07b82ea5 | 895 | return current_target_sections; |
348f8c02 PA |
896 | } |
897 | ||
9b409511 | 898 | static enum target_xfer_status |
07b82ea5 PA |
899 | exec_xfer_partial (struct target_ops *ops, enum target_object object, |
900 | const char *annex, gdb_byte *readbuf, | |
901 | const gdb_byte *writebuf, | |
9b409511 | 902 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) |
348f8c02 | 903 | { |
07b82ea5 PA |
904 | struct target_section_table *table = target_get_section_table (ops); |
905 | ||
906 | if (object == TARGET_OBJECT_MEMORY) | |
907 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 908 | offset, len, xfered_len, |
07b82ea5 PA |
909 | table->sections, |
910 | table->sections_end, | |
911 | NULL); | |
912 | else | |
2ed4b548 | 913 | return TARGET_XFER_E_IO; |
348f8c02 | 914 | } |
c906108c | 915 | \f |
c5aa993b | 916 | |
c906108c | 917 | void |
07b82ea5 | 918 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 919 | { |
5af949e3 | 920 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 921 | struct target_section *p; |
17a912b6 | 922 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 923 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 924 | |
c5aa993b | 925 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 926 | wrap_here (" "); |
a3f17187 | 927 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 928 | if (abfd == exec_bfd) |
51bee8e9 | 929 | { |
3e43a32a MS |
930 | /* gcc-3.4 does not like the initialization in |
931 | <p == t->sections_end>. */ | |
d904de5b | 932 | bfd_vma displacement = 0; |
2f1bdd26 | 933 | bfd_vma entry_point; |
51bee8e9 JK |
934 | |
935 | for (p = t->sections; p < t->sections_end; p++) | |
936 | { | |
2b2848e2 DE |
937 | struct bfd_section *psect = p->the_bfd_section; |
938 | bfd *pbfd = psect->owner; | |
51bee8e9 | 939 | |
2b2848e2 | 940 | if ((bfd_get_section_flags (pbfd, psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
941 | != (SEC_ALLOC | SEC_LOAD)) |
942 | continue; | |
943 | ||
2b2848e2 DE |
944 | if (bfd_get_section_vma (pbfd, psect) <= abfd->start_address |
945 | && abfd->start_address < (bfd_get_section_vma (pbfd, psect) | |
946 | + bfd_get_section_size (psect))) | |
51bee8e9 | 947 | { |
2b2848e2 | 948 | displacement = p->addr - bfd_get_section_vma (pbfd, psect); |
51bee8e9 JK |
949 | break; |
950 | } | |
951 | } | |
952 | if (p == t->sections_end) | |
b37520b6 | 953 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 954 | bfd_get_filename (abfd)); |
51bee8e9 | 955 | |
2f1bdd26 MGD |
956 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
957 | bfd_get_start_address (abfd) | |
958 | + displacement); | |
51bee8e9 | 959 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 960 | paddress (gdbarch, entry_point)); |
51bee8e9 | 961 | } |
07b82ea5 | 962 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 963 | { |
2b2848e2 DE |
964 | struct bfd_section *psect = p->the_bfd_section; |
965 | bfd *pbfd = psect->owner; | |
966 | ||
bb599908 PH |
967 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
968 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
969 | |
970 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
971 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
972 | since most output will then be much wider than necessary. It | |
973 | may make sense to test the size of the file and choose the | |
974 | format string accordingly. */ | |
a3f17187 | 975 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
976 | if (info_verbose) |
977 | printf_filtered (" @ %s", | |
2b2848e2 DE |
978 | hex_string_custom (psect->filepos, 8)); |
979 | printf_filtered (" is %s", bfd_section_name (pbfd, psect)); | |
980 | if (pbfd != abfd) | |
981 | printf_filtered (" in %s", bfd_get_filename (pbfd)); | |
c906108c SS |
982 | printf_filtered ("\n"); |
983 | } | |
984 | } | |
985 | ||
986 | static void | |
fba45db2 | 987 | exec_files_info (struct target_ops *t) |
c906108c | 988 | { |
57008375 JK |
989 | if (exec_bfd) |
990 | print_section_info (current_target_sections, exec_bfd); | |
991 | else | |
992 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
993 | } |
994 | ||
995 | static void | |
fba45db2 | 996 | set_section_command (char *args, int from_tty) |
c906108c | 997 | { |
0542c86d | 998 | struct target_section *p; |
c906108c SS |
999 | char *secname; |
1000 | unsigned seclen; | |
1001 | unsigned long secaddr; | |
1002 | char secprint[100]; | |
1003 | long offset; | |
07b82ea5 | 1004 | struct target_section_table *table; |
c906108c SS |
1005 | |
1006 | if (args == 0) | |
8a3fe4f8 | 1007 | error (_("Must specify section name and its virtual address")); |
c906108c | 1008 | |
0963b4bd | 1009 | /* Parse out section name. */ |
c5aa993b | 1010 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1011 | seclen = args - secname; |
1012 | ||
0963b4bd | 1013 | /* Parse out new virtual address. */ |
c906108c SS |
1014 | secaddr = parse_and_eval_address (args); |
1015 | ||
07b82ea5 PA |
1016 | table = current_target_sections; |
1017 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1018 | { |
57008375 | 1019 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 1020 | p->the_bfd_section), seclen) |
57008375 | 1021 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
1022 | { |
1023 | offset = secaddr - p->addr; | |
1024 | p->addr += offset; | |
1025 | p->endaddr += offset; | |
1026 | if (from_tty) | |
1027 | exec_files_info (&exec_ops); | |
1028 | return; | |
1029 | } | |
c906108c | 1030 | } |
c906108c SS |
1031 | if (seclen >= sizeof (secprint)) |
1032 | seclen = sizeof (secprint) - 1; | |
1033 | strncpy (secprint, secname, seclen); | |
1034 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1035 | error (_("Section %s not found"), secprint); |
c906108c SS |
1036 | } |
1037 | ||
30510692 DJ |
1038 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1039 | it to ADDRESS. */ | |
c1bd25fd DJ |
1040 | |
1041 | void | |
1042 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1043 | { | |
0542c86d | 1044 | struct target_section *p; |
07b82ea5 | 1045 | struct target_section_table *table; |
c1bd25fd | 1046 | |
07b82ea5 PA |
1047 | table = current_target_sections; |
1048 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1049 | { |
2b2848e2 | 1050 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1051 | && index == p->the_bfd_section->index) |
c1bd25fd | 1052 | { |
30510692 | 1053 | p->endaddr += address - p->addr; |
c1bd25fd | 1054 | p->addr = address; |
c1bd25fd DJ |
1055 | } |
1056 | } | |
1057 | } | |
1058 | ||
c906108c SS |
1059 | /* If mourn is being called in all the right places, this could be say |
1060 | `gdb internal error' (since generic_mourn calls | |
1061 | breakpoint_init_inferior). */ | |
1062 | ||
1063 | static int | |
3db08215 MM |
1064 | ignore (struct target_ops *ops, struct gdbarch *gdbarch, |
1065 | struct bp_target_info *bp_tgt) | |
c906108c SS |
1066 | { |
1067 | return 0; | |
1068 | } | |
1069 | ||
73971819 PA |
1070 | /* Implement the to_remove_breakpoint method. */ |
1071 | ||
1072 | static int | |
1073 | exec_remove_breakpoint (struct target_ops *ops, struct gdbarch *gdbarch, | |
1074 | struct bp_target_info *bp_tgt, | |
1075 | enum remove_bp_reason reason) | |
1076 | { | |
1077 | return 0; | |
1078 | } | |
1079 | ||
c35b1492 PA |
1080 | static int |
1081 | exec_has_memory (struct target_ops *ops) | |
1082 | { | |
1083 | /* We can provide memory if we have any file/target sections to read | |
1084 | from. */ | |
1085 | return (current_target_sections->sections | |
1086 | != current_target_sections->sections_end); | |
1087 | } | |
1088 | ||
83814951 TT |
1089 | static char * |
1090 | exec_make_note_section (struct target_ops *self, bfd *obfd, int *note_size) | |
1091 | { | |
1092 | error (_("Can't create a corefile")); | |
1093 | } | |
be4d1333 | 1094 | |
c906108c SS |
1095 | /* Fill in the exec file target vector. Very few entries need to be |
1096 | defined. */ | |
1097 | ||
be4d1333 | 1098 | static void |
fba45db2 | 1099 | init_exec_ops (void) |
c906108c SS |
1100 | { |
1101 | exec_ops.to_shortname = "exec"; | |
1102 | exec_ops.to_longname = "Local exec file"; | |
1103 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
1104 | Specify the filename of the executable file."; | |
1adeb98a | 1105 | exec_ops.to_open = exec_open; |
6c95b8df | 1106 | exec_ops.to_close = exec_close_1; |
07b82ea5 PA |
1107 | exec_ops.to_xfer_partial = exec_xfer_partial; |
1108 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
1109 | exec_ops.to_files_info = exec_files_info; |
1110 | exec_ops.to_insert_breakpoint = ignore; | |
73971819 | 1111 | exec_ops.to_remove_breakpoint = exec_remove_breakpoint; |
c906108c | 1112 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 1113 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 1114 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
b427c1bc | 1115 | exec_ops.to_find_memory_regions = objfile_find_memory_regions; |
c5aa993b | 1116 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
1117 | } |
1118 | ||
1119 | void | |
fba45db2 | 1120 | _initialize_exec (void) |
c906108c SS |
1121 | { |
1122 | struct cmd_list_element *c; | |
1123 | ||
1124 | init_exec_ops (); | |
1125 | ||
1126 | if (!dbx_commands) | |
1127 | { | |
1a966eab AC |
1128 | c = add_cmd ("file", class_files, file_command, _("\ |
1129 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1130 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1131 | and it is the program executed when you use the `run' command.\n\ | |
1132 | If FILE cannot be found as specified, your execution directory path\n\ | |
1133 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1134 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1135 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1136 | } |
1137 | ||
1a966eab AC |
1138 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1139 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1140 | If FILE cannot be found as specified, your execution directory path\n\ |
1141 | is searched for a command of that name.\n\ | |
1a966eab | 1142 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1143 | set_cmd_completer (c, filename_completer); |
c906108c | 1144 | |
1bedd215 AC |
1145 | add_com ("section", class_files, set_section_command, _("\ |
1146 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1147 | This can be used if the exec file does not contain section addresses,\n\ |
1148 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1149 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1150 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1151 | |
5bf193a2 AC |
1152 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1153 | Set writing into executable and core files."), _("\ | |
1154 | Show writing into executable and core files."), NULL, | |
1155 | NULL, | |
920d2a44 | 1156 | show_write_files, |
5bf193a2 | 1157 | &setlist, &showlist); |
c5aa993b | 1158 | |
9852c492 | 1159 | add_target_with_completer (&exec_ops, filename_completer); |
c906108c | 1160 | } |