Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
b811d2c2 | 3 | Copyright (C) 1988-2020 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" | |
d55e5aa6 | 22 | #include "inferior.h" |
4de283e4 TT |
23 | #include "target.h" |
24 | #include "gdbcmd.h" | |
c906108c | 25 | #include "language.h" |
4de283e4 TT |
26 | #include "filenames.h" |
27 | #include "symfile.h" | |
c906108c | 28 | #include "objfiles.h" |
4de283e4 TT |
29 | #include "completer.h" |
30 | #include "value.h" | |
31 | #include "exec.h" | |
76727919 | 32 | #include "observable.h" |
4de283e4 TT |
33 | #include "arch-utils.h" |
34 | #include "gdbthread.h" | |
6c95b8df | 35 | #include "progspace.h" |
53af73bf | 36 | #include "progspace-and-thread.h" |
4de283e4 TT |
37 | #include "gdb_bfd.h" |
38 | #include "gcore.h" | |
39 | #include "source.h" | |
40 | ||
41 | #include <fcntl.h> | |
e0eac551 | 42 | #include "readline/tilde.h" |
4de283e4 TT |
43 | #include "gdbcore.h" |
44 | ||
45 | #include <ctype.h> | |
46 | #include <sys/stat.h> | |
a9a5a3d1 | 47 | #include "solist.h" |
4de283e4 | 48 | #include <algorithm> |
268a13a5 | 49 | #include "gdbsupport/pathstuff.h" |
a2fedca9 | 50 | #include "cli/cli-style.h" |
c906108c | 51 | |
1d8b34a7 | 52 | void (*deprecated_file_changed_hook) (const char *); |
c906108c | 53 | |
d9f719f1 PA |
54 | static const target_info exec_target_info = { |
55 | "exec", | |
56 | N_("Local exec file"), | |
57 | N_("Use an executable file as a target.\n\ | |
58 | Specify the filename of the executable file.") | |
59 | }; | |
60 | ||
c906108c SS |
61 | /* The target vector for executable files. */ |
62 | ||
f6ac5f3d PA |
63 | struct exec_target final : public target_ops |
64 | { | |
d9f719f1 PA |
65 | const target_info &info () const override |
66 | { return exec_target_info; } | |
f6ac5f3d | 67 | |
66b4deae PA |
68 | strata stratum () const override { return file_stratum; } |
69 | ||
f6ac5f3d PA |
70 | void close () override; |
71 | enum target_xfer_status xfer_partial (enum target_object object, | |
72 | const char *annex, | |
73 | gdb_byte *readbuf, | |
74 | const gdb_byte *writebuf, | |
75 | ULONGEST offset, ULONGEST len, | |
76 | ULONGEST *xfered_len) override; | |
77 | struct target_section_table *get_section_table () override; | |
78 | void files_info () override; | |
79 | ||
57810aa7 | 80 | bool has_memory () override; |
f6ac5f3d PA |
81 | char *make_corefile_notes (bfd *, int *) override; |
82 | int find_memory_regions (find_memory_region_ftype func, void *data) override; | |
83 | }; | |
84 | ||
85 | static exec_target exec_ops; | |
c906108c | 86 | |
a2fedca9 PW |
87 | /* How to handle a mismatch between the current exec file and the exec |
88 | file determined from target. */ | |
89 | ||
90 | static const char *const exec_file_mismatch_names[] | |
91 | = {"ask", "warn", "off", NULL }; | |
92 | enum exec_file_mismatch_mode | |
93 | { | |
94 | exec_file_mismatch_ask, exec_file_mismatch_warn, exec_file_mismatch_off | |
95 | }; | |
96 | static const char *exec_file_mismatch = exec_file_mismatch_names[0]; | |
97 | static enum exec_file_mismatch_mode exec_file_mismatch_mode | |
98 | = exec_file_mismatch_ask; | |
99 | ||
100 | /* Show command. */ | |
101 | static void | |
102 | show_exec_file_mismatch_command (struct ui_file *file, int from_tty, | |
103 | struct cmd_list_element *c, const char *value) | |
104 | { | |
105 | fprintf_filtered (gdb_stdout, | |
106 | _("exec-file-mismatch handling is currently \"%s\".\n"), | |
107 | exec_file_mismatch_names[exec_file_mismatch_mode]); | |
108 | } | |
109 | ||
110 | /* Set command. Change the setting for range checking. */ | |
111 | static void | |
112 | set_exec_file_mismatch_command (const char *ignore, | |
113 | int from_tty, struct cmd_list_element *c) | |
114 | { | |
115 | for (enum exec_file_mismatch_mode mode = exec_file_mismatch_ask; | |
116 | ; | |
117 | mode = static_cast<enum exec_file_mismatch_mode>(1 + (int) mode)) | |
118 | { | |
119 | if (strcmp (exec_file_mismatch, exec_file_mismatch_names[mode]) == 0) | |
120 | { | |
121 | exec_file_mismatch_mode = mode; | |
122 | return; | |
123 | } | |
124 | if (mode == exec_file_mismatch_off) | |
125 | internal_error (__FILE__, __LINE__, | |
126 | _("Unrecognized exec-file-mismatch setting: \"%s\""), | |
127 | exec_file_mismatch); | |
128 | } | |
129 | } | |
130 | ||
c906108c SS |
131 | /* Whether to open exec and core files read-only or read-write. */ |
132 | ||
491144b5 | 133 | bool write_files = false; |
920d2a44 AC |
134 | static void |
135 | show_write_files (struct ui_file *file, int from_tty, | |
136 | struct cmd_list_element *c, const char *value) | |
137 | { | |
138 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
139 | value); | |
140 | } | |
141 | ||
c906108c | 142 | |
d9f719f1 PA |
143 | static void |
144 | exec_target_open (const char *args, int from_tty) | |
1adeb98a FN |
145 | { |
146 | target_preopen (from_tty); | |
147 | exec_file_attach (args, from_tty); | |
148 | } | |
149 | ||
07b82ea5 PA |
150 | /* Close and clear exec_bfd. If we end up with no target sections to |
151 | read memory from, this unpushes the exec_ops target. */ | |
152 | ||
6c95b8df PA |
153 | void |
154 | exec_close (void) | |
07b82ea5 PA |
155 | { |
156 | if (exec_bfd) | |
157 | { | |
158 | bfd *abfd = exec_bfd; | |
07b82ea5 | 159 | |
cbb099e8 | 160 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
161 | |
162 | /* Removing target sections may close the exec_ops target. | |
163 | Clear exec_bfd before doing so to prevent recursion. */ | |
164 | exec_bfd = NULL; | |
165 | exec_bfd_mtime = 0; | |
166 | ||
046ac79f | 167 | remove_target_sections (&exec_bfd); |
1f0c4988 JK |
168 | |
169 | xfree (exec_filename); | |
170 | exec_filename = NULL; | |
07b82ea5 PA |
171 | } |
172 | } | |
173 | ||
6c95b8df PA |
174 | /* This is the target_close implementation. Clears all target |
175 | sections and closes all executable bfds from all program spaces. */ | |
176 | ||
f6ac5f3d PA |
177 | void |
178 | exec_target::close () | |
c906108c | 179 | { |
ab16fce8 | 180 | struct program_space *ss; |
5ed8105e | 181 | scoped_restore_current_program_space restore_pspace; |
6c95b8df | 182 | |
ab16fce8 | 183 | ALL_PSPACES (ss) |
5ed8105e PA |
184 | { |
185 | set_current_program_space (ss); | |
186 | clear_section_table (current_target_sections); | |
187 | exec_close (); | |
188 | } | |
c906108c SS |
189 | } |
190 | ||
f6ac5f3d | 191 | /* See gdbcore.h. */ |
a10de604 GB |
192 | |
193 | void | |
ecf45d2c SL |
194 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
195 | symfile_add_flags add_flags) | |
a10de604 | 196 | { |
cc06b668 | 197 | struct gdb_exception prev_err; |
a10de604 | 198 | |
57d1de9c LM |
199 | /* exec_file_attach and symbol_file_add_main may throw an error if the file |
200 | cannot be opened either locally or remotely. | |
201 | ||
202 | This happens for example, when the file is first found in the local | |
203 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
204 | exist in the target filesystem, or when the file does exist, but | |
205 | is not readable. | |
88178e82 | 206 | |
57d1de9c LM |
207 | Even without a symbol file, the remote-based debugging session should |
208 | continue normally instead of ending abruptly. Hence we catch thrown | |
209 | errors/exceptions in the following code. */ | |
a70b8144 | 210 | try |
57d1de9c | 211 | { |
ecf45d2c SL |
212 | /* We must do this step even if exec_file_host is NULL, so that |
213 | exec_file_attach will clear state. */ | |
214 | exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE); | |
57d1de9c | 215 | } |
94aeb44b | 216 | catch (gdb_exception_error &err) |
57d1de9c LM |
217 | { |
218 | if (err.message != NULL) | |
3d6e9d23 | 219 | warning ("%s", err.what ()); |
57d1de9c | 220 | |
94aeb44b | 221 | prev_err = std::move (err); |
57d1de9c | 222 | } |
57d1de9c | 223 | |
ecf45d2c | 224 | if (exec_file_host != NULL) |
57d1de9c | 225 | { |
a70b8144 | 226 | try |
ecf45d2c SL |
227 | { |
228 | symbol_file_add_main (exec_file_host, add_flags); | |
229 | } | |
230d2906 | 230 | catch (const gdb_exception_error &err) |
ecf45d2c SL |
231 | { |
232 | if (!exception_print_same (prev_err, err)) | |
3d6e9d23 | 233 | warning ("%s", err.what ()); |
ecf45d2c | 234 | } |
57d1de9c | 235 | } |
ecf45d2c SL |
236 | } |
237 | ||
238 | /* See gdbcore.h. */ | |
239 | ||
a2fedca9 PW |
240 | void |
241 | validate_exec_file (int from_tty) | |
242 | { | |
243 | /* If user asked to ignore the mismatch, do nothing. */ | |
244 | if (exec_file_mismatch_mode == exec_file_mismatch_off) | |
245 | return; | |
246 | ||
247 | const char *current_exec_file = get_exec_file (0); | |
248 | struct inferior *inf = current_inferior (); | |
249 | /* Try to determine a filename from the process itself. */ | |
250 | const char *pid_exec_file = target_pid_to_exec_file (inf->pid); | |
251 | ||
252 | /* If wee cannot validate the exec file, return. */ | |
253 | if (current_exec_file == NULL || pid_exec_file == NULL) | |
254 | return; | |
255 | ||
256 | std::string exec_file_target (pid_exec_file); | |
257 | ||
258 | /* In case the exec file is not local, exec_file_target has to point at | |
259 | the target file system. */ | |
260 | if (is_target_filename (current_exec_file) && !target_filesystem_is_local ()) | |
261 | exec_file_target = TARGET_SYSROOT_PREFIX + exec_file_target; | |
262 | ||
263 | if (exec_file_target != current_exec_file) | |
264 | { | |
265 | warning | |
266 | (_("Mismatch between current exec-file %ps\n" | |
267 | "and automatically determined exec-file %ps\n" | |
268 | "exec-file-mismatch handling is currently \"%s\""), | |
269 | styled_string (file_name_style.style (), current_exec_file), | |
270 | styled_string (file_name_style.style (), exec_file_target.c_str ()), | |
271 | exec_file_mismatch_names[exec_file_mismatch_mode]); | |
272 | if (exec_file_mismatch_mode == exec_file_mismatch_ask) | |
273 | { | |
274 | symfile_add_flags add_flags = SYMFILE_MAINLINE; | |
275 | if (from_tty) | |
276 | add_flags |= SYMFILE_VERBOSE; | |
277 | try | |
278 | { | |
279 | symbol_file_add_main (exec_file_target.c_str (), add_flags); | |
280 | exec_file_attach (exec_file_target.c_str (), from_tty); | |
281 | } | |
282 | catch (gdb_exception_error &err) | |
283 | { | |
284 | warning (_("loading %ps %s"), | |
285 | styled_string (file_name_style.style (), | |
286 | exec_file_target.c_str ()), | |
287 | err.message != NULL ? err.what () : "error"); | |
288 | } | |
289 | } | |
290 | } | |
291 | } | |
292 | ||
293 | /* See gdbcore.h. */ | |
294 | ||
ecf45d2c SL |
295 | void |
296 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
297 | { | |
797bc1cb | 298 | char *exec_file_target; |
ecf45d2c SL |
299 | symfile_add_flags add_flags = 0; |
300 | ||
301 | /* Do nothing if we already have an executable filename. */ | |
302 | if (get_exec_file (0) != NULL) | |
303 | return; | |
304 | ||
305 | /* Try to determine a filename from the process itself. */ | |
306 | exec_file_target = target_pid_to_exec_file (pid); | |
307 | if (exec_file_target == NULL) | |
57d1de9c | 308 | { |
ecf45d2c SL |
309 | warning (_("No executable has been specified and target does not " |
310 | "support\n" | |
311 | "determining executable automatically. " | |
312 | "Try using the \"file\" command.")); | |
313 | return; | |
57d1de9c | 314 | } |
88178e82 | 315 | |
797bc1cb TT |
316 | gdb::unique_xmalloc_ptr<char> exec_file_host |
317 | = exec_file_find (exec_file_target, NULL); | |
ecf45d2c SL |
318 | |
319 | if (defer_bp_reset) | |
320 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
321 | ||
322 | if (from_tty) | |
323 | add_flags |= SYMFILE_VERBOSE; | |
324 | ||
325 | /* Attempt to open the exec file. */ | |
797bc1cb | 326 | try_open_exec_file (exec_file_host.get (), current_inferior (), add_flags); |
a10de604 GB |
327 | } |
328 | ||
907083d1 | 329 | /* Set FILENAME as the new exec file. |
c906108c | 330 | |
c5aa993b JM |
331 | This function is intended to be behave essentially the same |
332 | as exec_file_command, except that the latter will detect when | |
333 | a target is being debugged, and will ask the user whether it | |
334 | should be shut down first. (If the answer is "no", then the | |
335 | new file is ignored.) | |
c906108c | 336 | |
c5aa993b JM |
337 | This file is used by exec_file_command, to do the work of opening |
338 | and processing the exec file after any prompting has happened. | |
c906108c | 339 | |
c5aa993b JM |
340 | And, it is used by child_attach, when the attach command was |
341 | given a pid but not a exec pathname, and the attach command could | |
342 | figure out the pathname from the pid. (In this case, we shouldn't | |
343 | ask the user whether the current target should be shut down -- | |
907083d1 | 344 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
345 | |
346 | void | |
5f08566b | 347 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 348 | { |
9b333ba3 TT |
349 | /* First, acquire a reference to the current exec_bfd. We release |
350 | this at the end of the function; but acquiring it now lets the | |
351 | BFD cache return it if this call refers to the same file. */ | |
1831a9f9 | 352 | gdb_bfd_ref_ptr exec_bfd_holder = gdb_bfd_ref_ptr::new_reference (exec_bfd); |
192b62ce | 353 | |
c906108c | 354 | /* Remove any previous exec file. */ |
6c95b8df | 355 | exec_close (); |
c906108c SS |
356 | |
357 | /* Now open and digest the file the user requested, if any. */ | |
358 | ||
1adeb98a FN |
359 | if (!filename) |
360 | { | |
361 | if (from_tty) | |
a3f17187 | 362 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
363 | |
364 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
365 | } |
366 | else | |
c906108c | 367 | { |
64c0b5de | 368 | int load_via_target = 0; |
14278e1f | 369 | const char *scratch_pathname, *canonical_pathname; |
c906108c | 370 | int scratch_chan; |
07b82ea5 | 371 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 372 | char **matching; |
c5aa993b | 373 | |
64c0b5de GB |
374 | if (is_target_filename (filename)) |
375 | { | |
376 | if (target_filesystem_is_local ()) | |
377 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
378 | else | |
379 | load_via_target = 1; | |
380 | } | |
381 | ||
14278e1f | 382 | gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage; |
64c0b5de | 383 | if (load_via_target) |
c5aa993b | 384 | { |
64c0b5de GB |
385 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
386 | if (write_files) | |
387 | warning (_("writing into executable files is " | |
388 | "not supported for %s sysroots"), | |
389 | TARGET_SYSROOT_PREFIX); | |
390 | ||
14278e1f | 391 | scratch_pathname = filename; |
64c0b5de | 392 | scratch_chan = -1; |
64c0b5de | 393 | canonical_pathname = scratch_pathname; |
c5aa993b | 394 | } |
64c0b5de GB |
395 | else |
396 | { | |
397 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
398 | filename, write_files ? | |
399 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
e0cc99a6 | 400 | &scratch_storage); |
64c0b5de GB |
401 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
402 | if (scratch_chan < 0) | |
403 | { | |
0ae1c716 | 404 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
405 | |
406 | strcat (strcpy (exename, filename), ".exe"); | |
407 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
408 | exename, write_files ? | |
409 | O_RDWR | O_BINARY | |
410 | : O_RDONLY | O_BINARY, | |
e0cc99a6 | 411 | &scratch_storage); |
64c0b5de | 412 | } |
c906108c | 413 | #endif |
64c0b5de GB |
414 | if (scratch_chan < 0) |
415 | perror_with_name (filename); | |
a4453b7e | 416 | |
e0cc99a6 | 417 | scratch_pathname = scratch_storage.get (); |
a4453b7e | 418 | |
64c0b5de GB |
419 | /* gdb_bfd_open (and its variants) prefers canonicalized |
420 | pathname for better BFD caching. */ | |
14278e1f TT |
421 | canonical_storage = gdb_realpath (scratch_pathname); |
422 | canonical_pathname = canonical_storage.get (); | |
64c0b5de | 423 | } |
1f0c4988 | 424 | |
192b62ce | 425 | gdb_bfd_ref_ptr temp; |
64c0b5de | 426 | if (write_files && !load_via_target) |
192b62ce TT |
427 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
428 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 429 | else |
192b62ce TT |
430 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
431 | exec_bfd = temp.release (); | |
c906108c SS |
432 | |
433 | if (!exec_bfd) | |
9fe4a216 | 434 | { |
a2fedca9 PW |
435 | error (_("\"%ps\": could not open as an executable file: %s."), |
436 | styled_string (file_name_style.style (), scratch_pathname), | |
437 | bfd_errmsg (bfd_get_error ())); | |
9fe4a216 | 438 | } |
c906108c | 439 | |
64c0b5de GB |
440 | /* gdb_realpath_keepfile resolves symlinks on the local |
441 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 442 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
443 | if (load_via_target) |
444 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
445 | else | |
4971c9a7 | 446 | exec_filename = gdb_realpath_keepfile (scratch_pathname).release (); |
1f0c4988 | 447 | |
d18b8b7a | 448 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
449 | { |
450 | /* Make sure to close exec_bfd, or else "run" might try to use | |
451 | it. */ | |
6c95b8df | 452 | exec_close (); |
a2fedca9 PW |
453 | error (_("\"%ps\": not in executable format: %s"), |
454 | styled_string (file_name_style.style (), scratch_pathname), | |
803c08d0 | 455 | gdb_bfd_errmsg (bfd_get_error (), matching).c_str ()); |
c906108c SS |
456 | } |
457 | ||
07b82ea5 | 458 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
459 | { |
460 | /* Make sure to close exec_bfd, or else "run" might try to use | |
461 | it. */ | |
6c95b8df | 462 | exec_close (); |
a2fedca9 PW |
463 | error (_("\"%ps\": can't find the file sections: %s"), |
464 | styled_string (file_name_style.style (), scratch_pathname), | |
465 | bfd_errmsg (bfd_get_error ())); | |
c906108c SS |
466 | } |
467 | ||
c04ea773 DJ |
468 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
469 | ||
c906108c SS |
470 | validate_files (); |
471 | ||
472 | set_gdbarch_from_file (exec_bfd); | |
473 | ||
07b82ea5 | 474 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
475 | list of sections. This possibly pushes the exec_ops |
476 | target. */ | |
ed9eebaf | 477 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 478 | xfree (sections); |
c906108c SS |
479 | |
480 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
481 | if (deprecated_exec_file_display_hook) |
482 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 483 | } |
9b333ba3 | 484 | |
ce7d4522 | 485 | bfd_cache_close_all (); |
76727919 | 486 | gdb::observers::executable_changed.notify (); |
c906108c SS |
487 | } |
488 | ||
489 | /* Process the first arg in ARGS as the new exec file. | |
490 | ||
c5aa993b JM |
491 | Note that we have to explicitly ignore additional args, since we can |
492 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
493 | which can take multiple args. |
494 | ||
0963b4bd | 495 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 496 | |
1adeb98a | 497 | static void |
1d8b34a7 | 498 | exec_file_command (const char *args, int from_tty) |
c906108c | 499 | { |
4c42eaff DJ |
500 | if (from_tty && target_has_execution |
501 | && !query (_("A program is being debugged already.\n" | |
502 | "Are you sure you want to change the file? "))) | |
503 | error (_("File not changed.")); | |
1adeb98a FN |
504 | |
505 | if (args) | |
506 | { | |
507 | /* Scan through the args and pick up the first non option arg | |
508 | as the filename. */ | |
509 | ||
773a1edc TT |
510 | gdb_argv built_argv (args); |
511 | char **argv = built_argv.get (); | |
1adeb98a FN |
512 | |
513 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
514 | {; | |
515 | } | |
516 | if (*argv == NULL) | |
8a3fe4f8 | 517 | error (_("No executable file name was specified")); |
1adeb98a | 518 | |
773a1edc TT |
519 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv)); |
520 | exec_file_attach (filename.get (), from_tty); | |
1adeb98a FN |
521 | } |
522 | else | |
523 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
524 | } |
525 | ||
0963b4bd | 526 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
527 | What a novelty. Why did GDB go through four major releases before this |
528 | command was added? */ | |
529 | ||
530 | static void | |
1d8b34a7 | 531 | file_command (const char *arg, int from_tty) |
c906108c SS |
532 | { |
533 | /* FIXME, if we lose on reading the symbol file, we should revert | |
534 | the exec file, but that's rough. */ | |
535 | exec_file_command (arg, from_tty); | |
536 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
537 | if (deprecated_file_changed_hook) |
538 | deprecated_file_changed_hook (arg); | |
c906108c | 539 | } |
c906108c | 540 | \f |
c5aa993b | 541 | |
0963b4bd | 542 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
543 | table_pp_char is a char * to get it through bfd_map_over_sections; |
544 | we cast it back to its proper type. */ | |
545 | ||
546 | static void | |
7be0c536 AC |
547 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
548 | void *table_pp_char) | |
c906108c | 549 | { |
0542c86d | 550 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
551 | flagword aflag; |
552 | ||
2b2848e2 DE |
553 | gdb_assert (abfd == asect->owner); |
554 | ||
0f5d55d8 JB |
555 | /* Check the section flags, but do not discard zero-length sections, since |
556 | some symbols may still be attached to this section. For instance, we | |
557 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
558 | section to which a symbol named "_end" was attached. The address | |
559 | of this symbol still needs to be relocated. */ | |
fd361982 | 560 | aflag = bfd_section_flags (asect); |
c906108c SS |
561 | if (!(aflag & SEC_ALLOC)) |
562 | return; | |
0f5d55d8 | 563 | |
046ac79f | 564 | (*table_pp)->owner = NULL; |
c906108c | 565 | (*table_pp)->the_bfd_section = asect; |
fd361982 AM |
566 | (*table_pp)->addr = bfd_section_vma (asect); |
567 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (asect); | |
c906108c SS |
568 | (*table_pp)++; |
569 | } | |
570 | ||
a5b1fd27 DE |
571 | /* See exec.h. */ |
572 | ||
573 | void | |
574 | clear_section_table (struct target_section_table *table) | |
575 | { | |
576 | xfree (table->sections); | |
577 | table->sections = table->sections_end = NULL; | |
578 | } | |
579 | ||
580 | /* Resize section table TABLE by ADJUSTMENT. | |
581 | ADJUSTMENT may be negative, in which case the caller must have already | |
582 | removed the sections being deleted. | |
583 | Returns the old size. */ | |
584 | ||
585 | static int | |
586 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 587 | { |
07b82ea5 PA |
588 | int old_count; |
589 | int new_count; | |
590 | ||
07b82ea5 PA |
591 | old_count = table->sections_end - table->sections; |
592 | ||
a5b1fd27 | 593 | new_count = adjustment + old_count; |
07b82ea5 PA |
594 | |
595 | if (new_count) | |
596 | { | |
224c3ddb SM |
597 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
598 | new_count); | |
07b82ea5 PA |
599 | table->sections_end = table->sections + new_count; |
600 | } | |
601 | else | |
a5b1fd27 | 602 | clear_section_table (table); |
07b82ea5 PA |
603 | |
604 | return old_count; | |
605 | } | |
606 | ||
c906108c SS |
607 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
608 | Returns 0 if OK, 1 on error. */ | |
609 | ||
610 | int | |
0542c86d PA |
611 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
612 | struct target_section **end) | |
c906108c SS |
613 | { |
614 | unsigned count; | |
615 | ||
616 | count = bfd_count_sections (some_bfd); | |
617 | if (*start) | |
b8c9b27d | 618 | xfree (* start); |
8d749320 | 619 | *start = XNEWVEC (struct target_section, count); |
c906108c | 620 | *end = *start; |
c5aa993b | 621 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
e2ff18a0 SM |
622 | |
623 | gdb_assert (*end <= *start + count); | |
624 | ||
c906108c SS |
625 | /* We could realloc the table, but it probably loses for most files. */ |
626 | return 0; | |
627 | } | |
07b82ea5 PA |
628 | |
629 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
630 | current set of target sections. */ | |
631 | ||
632 | void | |
046ac79f | 633 | add_target_sections (void *owner, |
ed9eebaf | 634 | struct target_section *sections, |
07b82ea5 PA |
635 | struct target_section *sections_end) |
636 | { | |
637 | int count; | |
638 | struct target_section_table *table = current_target_sections; | |
639 | ||
640 | count = sections_end - sections; | |
641 | ||
642 | if (count > 0) | |
643 | { | |
644 | int space = resize_section_table (table, count); | |
ed9eebaf | 645 | int i; |
d7f9d729 | 646 | |
ed9eebaf TT |
647 | for (i = 0; i < count; ++i) |
648 | { | |
649 | table->sections[space + i] = sections[i]; | |
046ac79f | 650 | table->sections[space + i].owner = owner; |
ed9eebaf | 651 | } |
07b82ea5 | 652 | |
53af73bf | 653 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
5b6d1e4f PA |
654 | program_space *curr_pspace = current_program_space; |
655 | ||
07b82ea5 | 656 | /* If these are the first file sections we can provide memory |
5b6d1e4f PA |
657 | from, push the file_stratum target. Must do this in all |
658 | inferiors sharing the program space. */ | |
659 | for (inferior *inf : all_inferiors ()) | |
660 | { | |
661 | if (inf->pspace != curr_pspace) | |
662 | continue; | |
663 | ||
664 | if (inf->target_is_pushed (&exec_ops)) | |
665 | continue; | |
666 | ||
667 | switch_to_inferior_no_thread (inf); | |
668 | push_target (&exec_ops); | |
669 | } | |
07b82ea5 PA |
670 | } |
671 | } | |
672 | ||
76ad5e1e NB |
673 | /* Add the sections of OBJFILE to the current set of target sections. */ |
674 | ||
675 | void | |
676 | add_target_sections_of_objfile (struct objfile *objfile) | |
677 | { | |
678 | struct target_section_table *table = current_target_sections; | |
679 | struct obj_section *osect; | |
680 | int space; | |
681 | unsigned count = 0; | |
682 | struct target_section *ts; | |
683 | ||
684 | if (objfile == NULL) | |
685 | return; | |
686 | ||
687 | /* Compute the number of sections to add. */ | |
688 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
689 | { | |
fd361982 | 690 | if (bfd_section_size (osect->the_bfd_section) == 0) |
76ad5e1e NB |
691 | continue; |
692 | count++; | |
693 | } | |
694 | ||
695 | if (count == 0) | |
696 | return; | |
697 | ||
698 | space = resize_section_table (table, count); | |
699 | ||
700 | ts = table->sections + space; | |
701 | ||
702 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
703 | { | |
fd361982 | 704 | if (bfd_section_size (osect->the_bfd_section) == 0) |
76ad5e1e NB |
705 | continue; |
706 | ||
707 | gdb_assert (ts < table->sections + space + count); | |
708 | ||
709 | ts->addr = obj_section_addr (osect); | |
710 | ts->endaddr = obj_section_endaddr (osect); | |
711 | ts->the_bfd_section = osect->the_bfd_section; | |
712 | ts->owner = (void *) objfile; | |
713 | ||
714 | ts++; | |
715 | } | |
716 | } | |
717 | ||
046ac79f JK |
718 | /* Remove all target sections owned by OWNER. |
719 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
720 | |
721 | void | |
046ac79f | 722 | remove_target_sections (void *owner) |
07b82ea5 PA |
723 | { |
724 | struct target_section *src, *dest; | |
07b82ea5 PA |
725 | struct target_section_table *table = current_target_sections; |
726 | ||
046ac79f JK |
727 | gdb_assert (owner != NULL); |
728 | ||
07b82ea5 PA |
729 | dest = table->sections; |
730 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 731 | if (src->owner != owner) |
07b82ea5 PA |
732 | { |
733 | /* Keep this section. */ | |
734 | if (dest < src) | |
735 | *dest = *src; | |
736 | dest++; | |
737 | } | |
738 | ||
739 | /* If we've dropped any sections, resize the section table. */ | |
740 | if (dest < src) | |
741 | { | |
742 | int old_count; | |
743 | ||
744 | old_count = resize_section_table (table, dest - src); | |
745 | ||
746 | /* If we don't have any more sections to read memory from, | |
5b6d1e4f PA |
747 | remove the file_stratum target from the stack of each |
748 | inferior sharing the program space. */ | |
07b82ea5 | 749 | if (old_count + (dest - src) == 0) |
6c95b8df | 750 | { |
53af73bf | 751 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
5b6d1e4f PA |
752 | program_space *curr_pspace = current_program_space; |
753 | ||
754 | for (inferior *inf : all_inferiors ()) | |
755 | { | |
756 | if (inf->pspace != curr_pspace) | |
757 | continue; | |
6c95b8df | 758 | |
5b6d1e4f PA |
759 | if (inf->pspace->target_sections.sections |
760 | != inf->pspace->target_sections.sections_end) | |
761 | continue; | |
6c95b8df | 762 | |
5b6d1e4f PA |
763 | switch_to_inferior_no_thread (inf); |
764 | unpush_target (&exec_ops); | |
765 | } | |
6c95b8df | 766 | } |
07b82ea5 PA |
767 | } |
768 | } | |
769 | ||
5b6d1e4f PA |
770 | /* See exec.h. */ |
771 | ||
772 | void | |
773 | exec_on_vfork () | |
774 | { | |
775 | if (current_program_space->target_sections.sections | |
776 | != current_program_space->target_sections.sections_end) | |
777 | push_target (&exec_ops); | |
778 | } | |
779 | ||
c906108c | 780 | \f |
348f8c02 | 781 | |
1ca49d37 YQ |
782 | enum target_xfer_status |
783 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
784 | ULONGEST len, ULONGEST *xfered_len) | |
785 | { | |
786 | /* It's unduly pedantic to refuse to look at the executable for | |
787 | read-only pieces; so do the equivalent of readonly regions aka | |
788 | QTro packet. */ | |
789 | if (exec_bfd != NULL) | |
790 | { | |
791 | asection *s; | |
792 | bfd_size_type size; | |
793 | bfd_vma vma; | |
794 | ||
795 | for (s = exec_bfd->sections; s; s = s->next) | |
796 | { | |
797 | if ((s->flags & SEC_LOAD) == 0 | |
798 | || (s->flags & SEC_READONLY) == 0) | |
799 | continue; | |
800 | ||
801 | vma = s->vma; | |
fd361982 | 802 | size = bfd_section_size (s); |
1ca49d37 YQ |
803 | if (vma <= offset && offset < (vma + size)) |
804 | { | |
805 | ULONGEST amt; | |
806 | ||
807 | amt = (vma + size) - offset; | |
808 | if (amt > len) | |
809 | amt = len; | |
810 | ||
811 | amt = bfd_get_section_contents (exec_bfd, s, | |
812 | readbuf, offset - vma, amt); | |
813 | ||
814 | if (amt == 0) | |
815 | return TARGET_XFER_EOF; | |
816 | else | |
817 | { | |
818 | *xfered_len = amt; | |
819 | return TARGET_XFER_OK; | |
820 | } | |
821 | } | |
822 | } | |
823 | } | |
824 | ||
825 | /* Indicate failure to find the requested memory block. */ | |
826 | return TARGET_XFER_E_IO; | |
827 | } | |
828 | ||
a79b1bc6 | 829 | /* Return all read-only memory ranges found in the target section |
5a2eb0ef | 830 | table defined by SECTIONS and SECTIONS_END, starting at (and |
a79b1bc6 | 831 | intersected with) MEMADDR for LEN bytes. */ |
5a2eb0ef | 832 | |
a79b1bc6 SM |
833 | static std::vector<mem_range> |
834 | section_table_available_memory (CORE_ADDR memaddr, ULONGEST len, | |
e6ca34fc PA |
835 | struct target_section *sections, |
836 | struct target_section *sections_end) | |
837 | { | |
a79b1bc6 | 838 | std::vector<mem_range> memory; |
e6ca34fc | 839 | |
a79b1bc6 | 840 | for (target_section *p = sections; p < sections_end; p++) |
e6ca34fc | 841 | { |
fd361982 | 842 | if ((bfd_section_flags (p->the_bfd_section) & SEC_READONLY) == 0) |
e6ca34fc PA |
843 | continue; |
844 | ||
845 | /* Copy the meta-data, adjusted. */ | |
846 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
847 | { | |
848 | ULONGEST lo1, hi1, lo2, hi2; | |
e6ca34fc PA |
849 | |
850 | lo1 = memaddr; | |
851 | hi1 = memaddr + len; | |
852 | ||
853 | lo2 = p->addr; | |
854 | hi2 = p->endaddr; | |
855 | ||
a79b1bc6 SM |
856 | CORE_ADDR start = std::max (lo1, lo2); |
857 | int length = std::min (hi1, hi2) - start; | |
e6ca34fc | 858 | |
a79b1bc6 | 859 | memory.emplace_back (start, length); |
e6ca34fc PA |
860 | } |
861 | } | |
862 | ||
863 | return memory; | |
864 | } | |
865 | ||
1ee79381 YQ |
866 | enum target_xfer_status |
867 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
868 | ULONGEST len, ULONGEST *xfered_len) | |
869 | { | |
a79b1bc6 SM |
870 | target_section_table *table = target_get_section_table (&exec_ops); |
871 | std::vector<mem_range> available_memory | |
872 | = section_table_available_memory (offset, len, | |
873 | table->sections, table->sections_end); | |
1ee79381 | 874 | |
a79b1bc6 | 875 | normalize_mem_ranges (&available_memory); |
1ee79381 | 876 | |
a79b1bc6 | 877 | for (const mem_range &r : available_memory) |
1ee79381 | 878 | { |
a79b1bc6 | 879 | if (mem_ranges_overlap (r.start, r.length, offset, len)) |
1ee79381 YQ |
880 | { |
881 | CORE_ADDR end; | |
882 | enum target_xfer_status status; | |
883 | ||
884 | /* Get the intersection window. */ | |
a79b1bc6 | 885 | end = std::min<CORE_ADDR> (offset + len, r.start + r.length); |
1ee79381 YQ |
886 | |
887 | gdb_assert (end - offset <= len); | |
888 | ||
a79b1bc6 | 889 | if (offset >= r.start) |
1ee79381 YQ |
890 | status = exec_read_partial_read_only (readbuf, offset, |
891 | end - offset, | |
892 | xfered_len); | |
893 | else | |
894 | { | |
a79b1bc6 | 895 | *xfered_len = r.start - offset; |
bc113b4e | 896 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 | 897 | } |
1ee79381 YQ |
898 | return status; |
899 | } | |
900 | } | |
1ee79381 YQ |
901 | |
902 | *xfered_len = len; | |
bc113b4e | 903 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
904 | } |
905 | ||
9b409511 | 906 | enum target_xfer_status |
07b82ea5 | 907 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 908 | ULONGEST offset, ULONGEST len, |
9b409511 | 909 | ULONGEST *xfered_len, |
07b82ea5 PA |
910 | struct target_section *sections, |
911 | struct target_section *sections_end, | |
912 | const char *section_name) | |
c906108c | 913 | { |
020cc13c | 914 | int res; |
0542c86d | 915 | struct target_section *p; |
07b82ea5 PA |
916 | ULONGEST memaddr = offset; |
917 | ULONGEST memend = memaddr + len; | |
c906108c | 918 | |
e2ff18a0 | 919 | gdb_assert (len != 0); |
c906108c | 920 | |
348f8c02 | 921 | for (p = sections; p < sections_end; p++) |
c906108c | 922 | { |
2b2848e2 DE |
923 | struct bfd_section *asect = p->the_bfd_section; |
924 | bfd *abfd = asect->owner; | |
925 | ||
926 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 927 | continue; /* not the section we need. */ |
c906108c | 928 | if (memaddr >= p->addr) |
3db26b01 JB |
929 | { |
930 | if (memend <= p->endaddr) | |
931 | { | |
932 | /* Entire transfer is within this section. */ | |
07b82ea5 | 933 | if (writebuf) |
2b2848e2 | 934 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 935 | writebuf, memaddr - p->addr, |
85302095 AC |
936 | len); |
937 | else | |
2b2848e2 | 938 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 939 | readbuf, memaddr - p->addr, |
85302095 | 940 | len); |
9b409511 YQ |
941 | |
942 | if (res != 0) | |
943 | { | |
944 | *xfered_len = len; | |
945 | return TARGET_XFER_OK; | |
946 | } | |
947 | else | |
948 | return TARGET_XFER_EOF; | |
3db26b01 JB |
949 | } |
950 | else if (memaddr >= p->endaddr) | |
951 | { | |
952 | /* This section ends before the transfer starts. */ | |
953 | continue; | |
954 | } | |
955 | else | |
956 | { | |
957 | /* This section overlaps the transfer. Just do half. */ | |
958 | len = p->endaddr - memaddr; | |
07b82ea5 | 959 | if (writebuf) |
2b2848e2 | 960 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 961 | writebuf, memaddr - p->addr, |
85302095 AC |
962 | len); |
963 | else | |
2b2848e2 | 964 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 965 | readbuf, memaddr - p->addr, |
85302095 | 966 | len); |
9b409511 YQ |
967 | if (res != 0) |
968 | { | |
969 | *xfered_len = len; | |
970 | return TARGET_XFER_OK; | |
971 | } | |
972 | else | |
973 | return TARGET_XFER_EOF; | |
3db26b01 JB |
974 | } |
975 | } | |
c906108c SS |
976 | } |
977 | ||
9b409511 | 978 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 979 | } |
348f8c02 | 980 | |
f6ac5f3d PA |
981 | struct target_section_table * |
982 | exec_target::get_section_table () | |
348f8c02 | 983 | { |
07b82ea5 | 984 | return current_target_sections; |
348f8c02 PA |
985 | } |
986 | ||
f6ac5f3d PA |
987 | enum target_xfer_status |
988 | exec_target::xfer_partial (enum target_object object, | |
989 | const char *annex, gdb_byte *readbuf, | |
990 | const gdb_byte *writebuf, | |
991 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
348f8c02 | 992 | { |
f6ac5f3d | 993 | struct target_section_table *table = get_section_table (); |
07b82ea5 PA |
994 | |
995 | if (object == TARGET_OBJECT_MEMORY) | |
996 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 997 | offset, len, xfered_len, |
07b82ea5 PA |
998 | table->sections, |
999 | table->sections_end, | |
1000 | NULL); | |
1001 | else | |
2ed4b548 | 1002 | return TARGET_XFER_E_IO; |
348f8c02 | 1003 | } |
c906108c | 1004 | \f |
c5aa993b | 1005 | |
c906108c | 1006 | void |
07b82ea5 | 1007 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 1008 | { |
5af949e3 | 1009 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 1010 | struct target_section *p; |
17a912b6 | 1011 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 1012 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 1013 | |
a2fedca9 PW |
1014 | printf_filtered ("\t`%ps', ", |
1015 | styled_string (file_name_style.style (), | |
1016 | bfd_get_filename (abfd))); | |
c906108c | 1017 | wrap_here (" "); |
a3f17187 | 1018 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 1019 | if (abfd == exec_bfd) |
51bee8e9 | 1020 | { |
3e43a32a MS |
1021 | /* gcc-3.4 does not like the initialization in |
1022 | <p == t->sections_end>. */ | |
d904de5b | 1023 | bfd_vma displacement = 0; |
2f1bdd26 | 1024 | bfd_vma entry_point; |
51bee8e9 JK |
1025 | |
1026 | for (p = t->sections; p < t->sections_end; p++) | |
1027 | { | |
2b2848e2 | 1028 | struct bfd_section *psect = p->the_bfd_section; |
51bee8e9 | 1029 | |
fd361982 | 1030 | if ((bfd_section_flags (psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
1031 | != (SEC_ALLOC | SEC_LOAD)) |
1032 | continue; | |
1033 | ||
fd361982 AM |
1034 | if (bfd_section_vma (psect) <= abfd->start_address |
1035 | && abfd->start_address < (bfd_section_vma (psect) | |
1036 | + bfd_section_size (psect))) | |
51bee8e9 | 1037 | { |
fd361982 | 1038 | displacement = p->addr - bfd_section_vma (psect); |
51bee8e9 JK |
1039 | break; |
1040 | } | |
1041 | } | |
1042 | if (p == t->sections_end) | |
a2fedca9 PW |
1043 | warning (_("Cannot find section for the entry point of %ps."), |
1044 | styled_string (file_name_style.style (), | |
1045 | bfd_get_filename (abfd))); | |
51bee8e9 | 1046 | |
2f1bdd26 MGD |
1047 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
1048 | bfd_get_start_address (abfd) | |
1049 | + displacement); | |
51bee8e9 | 1050 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 1051 | paddress (gdbarch, entry_point)); |
51bee8e9 | 1052 | } |
07b82ea5 | 1053 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 1054 | { |
2b2848e2 DE |
1055 | struct bfd_section *psect = p->the_bfd_section; |
1056 | bfd *pbfd = psect->owner; | |
1057 | ||
bb599908 PH |
1058 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
1059 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
1060 | |
1061 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
1062 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
1063 | since most output will then be much wider than necessary. It | |
1064 | may make sense to test the size of the file and choose the | |
1065 | format string accordingly. */ | |
a3f17187 | 1066 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
1067 | if (info_verbose) |
1068 | printf_filtered (" @ %s", | |
2b2848e2 | 1069 | hex_string_custom (psect->filepos, 8)); |
fd361982 | 1070 | printf_filtered (" is %s", bfd_section_name (psect)); |
2b2848e2 | 1071 | if (pbfd != abfd) |
a2fedca9 PW |
1072 | printf_filtered (" in %ps", |
1073 | styled_string (file_name_style.style (), | |
1074 | bfd_get_filename (pbfd))); | |
c906108c SS |
1075 | printf_filtered ("\n"); |
1076 | } | |
1077 | } | |
1078 | ||
f6ac5f3d PA |
1079 | void |
1080 | exec_target::files_info () | |
c906108c | 1081 | { |
57008375 JK |
1082 | if (exec_bfd) |
1083 | print_section_info (current_target_sections, exec_bfd); | |
1084 | else | |
1085 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
1086 | } |
1087 | ||
1088 | static void | |
0b39b52e | 1089 | set_section_command (const char *args, int from_tty) |
c906108c | 1090 | { |
0542c86d | 1091 | struct target_section *p; |
0b39b52e | 1092 | const char *secname; |
c906108c SS |
1093 | unsigned seclen; |
1094 | unsigned long secaddr; | |
1095 | char secprint[100]; | |
1096 | long offset; | |
07b82ea5 | 1097 | struct target_section_table *table; |
c906108c SS |
1098 | |
1099 | if (args == 0) | |
8a3fe4f8 | 1100 | error (_("Must specify section name and its virtual address")); |
c906108c | 1101 | |
0963b4bd | 1102 | /* Parse out section name. */ |
c5aa993b | 1103 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1104 | seclen = args - secname; |
1105 | ||
0963b4bd | 1106 | /* Parse out new virtual address. */ |
c906108c SS |
1107 | secaddr = parse_and_eval_address (args); |
1108 | ||
07b82ea5 PA |
1109 | table = current_target_sections; |
1110 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1111 | { |
fd361982 AM |
1112 | if (!strncmp (secname, bfd_section_name (p->the_bfd_section), seclen) |
1113 | && bfd_section_name (p->the_bfd_section)[seclen] == '\0') | |
c5aa993b JM |
1114 | { |
1115 | offset = secaddr - p->addr; | |
1116 | p->addr += offset; | |
1117 | p->endaddr += offset; | |
1118 | if (from_tty) | |
f6ac5f3d | 1119 | exec_ops.files_info (); |
c5aa993b JM |
1120 | return; |
1121 | } | |
c906108c | 1122 | } |
c906108c SS |
1123 | if (seclen >= sizeof (secprint)) |
1124 | seclen = sizeof (secprint) - 1; | |
1125 | strncpy (secprint, secname, seclen); | |
1126 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1127 | error (_("Section %s not found"), secprint); |
c906108c SS |
1128 | } |
1129 | ||
30510692 DJ |
1130 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1131 | it to ADDRESS. */ | |
c1bd25fd DJ |
1132 | |
1133 | void | |
1134 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1135 | { | |
0542c86d | 1136 | struct target_section *p; |
07b82ea5 | 1137 | struct target_section_table *table; |
c1bd25fd | 1138 | |
07b82ea5 PA |
1139 | table = current_target_sections; |
1140 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1141 | { |
2b2848e2 | 1142 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1143 | && index == p->the_bfd_section->index) |
c1bd25fd | 1144 | { |
30510692 | 1145 | p->endaddr += address - p->addr; |
c1bd25fd | 1146 | p->addr = address; |
c1bd25fd DJ |
1147 | } |
1148 | } | |
1149 | } | |
1150 | ||
57810aa7 | 1151 | bool |
f6ac5f3d | 1152 | exec_target::has_memory () |
c35b1492 PA |
1153 | { |
1154 | /* We can provide memory if we have any file/target sections to read | |
1155 | from. */ | |
1156 | return (current_target_sections->sections | |
1157 | != current_target_sections->sections_end); | |
1158 | } | |
1159 | ||
f6ac5f3d PA |
1160 | char * |
1161 | exec_target::make_corefile_notes (bfd *obfd, int *note_size) | |
83814951 TT |
1162 | { |
1163 | error (_("Can't create a corefile")); | |
1164 | } | |
be4d1333 | 1165 | |
f6ac5f3d PA |
1166 | int |
1167 | exec_target::find_memory_regions (find_memory_region_ftype func, void *data) | |
c906108c | 1168 | { |
f6ac5f3d | 1169 | return objfile_find_memory_regions (this, func, data); |
c906108c SS |
1170 | } |
1171 | ||
6c265988 | 1172 | void _initialize_exec (); |
c906108c | 1173 | void |
6c265988 | 1174 | _initialize_exec () |
c906108c SS |
1175 | { |
1176 | struct cmd_list_element *c; | |
1177 | ||
c906108c SS |
1178 | if (!dbx_commands) |
1179 | { | |
1a966eab AC |
1180 | c = add_cmd ("file", class_files, file_command, _("\ |
1181 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1182 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1183 | and it is the program executed when you use the `run' command.\n\ | |
1184 | If FILE cannot be found as specified, your execution directory path\n\ | |
1185 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1186 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1187 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1188 | } |
1189 | ||
1a966eab AC |
1190 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1191 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1192 | If FILE cannot be found as specified, your execution directory path\n\ |
1193 | is searched for a command of that name.\n\ | |
1a966eab | 1194 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1195 | set_cmd_completer (c, filename_completer); |
c906108c | 1196 | |
1bedd215 AC |
1197 | add_com ("section", class_files, set_section_command, _("\ |
1198 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1199 | This can be used if the exec file does not contain section addresses,\n\ |
1200 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1201 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1202 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1203 | |
5bf193a2 AC |
1204 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1205 | Set writing into executable and core files."), _("\ | |
1206 | Show writing into executable and core files."), NULL, | |
1207 | NULL, | |
920d2a44 | 1208 | show_write_files, |
5bf193a2 | 1209 | &setlist, &showlist); |
c5aa993b | 1210 | |
a2fedca9 PW |
1211 | add_setshow_enum_cmd ("exec-file-mismatch", class_support, |
1212 | exec_file_mismatch_names, | |
1213 | &exec_file_mismatch, | |
1214 | _("\ | |
1215 | Set exec-file-mismatch handling (ask|warn|off)."), | |
1216 | _("\ | |
1217 | Show exec-file-mismatch handling (ask|warn|off)."), | |
1218 | _("\ | |
1219 | Specifies how to handle a mismatch between the current exec-file name\n\ | |
1220 | loaded by GDB and the exec-file name automatically determined when attaching\n\ | |
1221 | to a process:\n\n\ | |
1222 | ask - warn the user and ask whether to load the determined exec-file.\n\ | |
1223 | warn - warn the user, but do not change the exec-file.\n\ | |
1224 | off - do not check for mismatch."), | |
1225 | set_exec_file_mismatch_command, | |
1226 | show_exec_file_mismatch_command, | |
1227 | &setlist, &showlist); | |
1228 | ||
d9f719f1 | 1229 | add_target (exec_target_info, exec_target_open, filename_completer); |
c906108c | 1230 | } |