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 | { |
5ed8105e | 180 | scoped_restore_current_program_space restore_pspace; |
6c95b8df | 181 | |
94c93c35 | 182 | for (struct program_space *ss : program_spaces) |
5ed8105e PA |
183 | { |
184 | set_current_program_space (ss); | |
185 | clear_section_table (current_target_sections); | |
186 | exec_close (); | |
187 | } | |
c906108c SS |
188 | } |
189 | ||
f6ac5f3d | 190 | /* See gdbcore.h. */ |
a10de604 GB |
191 | |
192 | void | |
ecf45d2c SL |
193 | try_open_exec_file (const char *exec_file_host, struct inferior *inf, |
194 | symfile_add_flags add_flags) | |
a10de604 | 195 | { |
cc06b668 | 196 | struct gdb_exception prev_err; |
a10de604 | 197 | |
57d1de9c LM |
198 | /* exec_file_attach and symbol_file_add_main may throw an error if the file |
199 | cannot be opened either locally or remotely. | |
200 | ||
201 | This happens for example, when the file is first found in the local | |
202 | sysroot (above), and then disappears (a TOCTOU race), or when it doesn't | |
203 | exist in the target filesystem, or when the file does exist, but | |
204 | is not readable. | |
88178e82 | 205 | |
57d1de9c LM |
206 | Even without a symbol file, the remote-based debugging session should |
207 | continue normally instead of ending abruptly. Hence we catch thrown | |
208 | errors/exceptions in the following code. */ | |
a70b8144 | 209 | try |
57d1de9c | 210 | { |
ecf45d2c SL |
211 | /* We must do this step even if exec_file_host is NULL, so that |
212 | exec_file_attach will clear state. */ | |
213 | exec_file_attach (exec_file_host, add_flags & SYMFILE_VERBOSE); | |
57d1de9c | 214 | } |
94aeb44b | 215 | catch (gdb_exception_error &err) |
57d1de9c LM |
216 | { |
217 | if (err.message != NULL) | |
3d6e9d23 | 218 | warning ("%s", err.what ()); |
57d1de9c | 219 | |
94aeb44b | 220 | prev_err = std::move (err); |
57d1de9c | 221 | } |
57d1de9c | 222 | |
ecf45d2c | 223 | if (exec_file_host != NULL) |
57d1de9c | 224 | { |
a70b8144 | 225 | try |
ecf45d2c SL |
226 | { |
227 | symbol_file_add_main (exec_file_host, add_flags); | |
228 | } | |
230d2906 | 229 | catch (const gdb_exception_error &err) |
ecf45d2c SL |
230 | { |
231 | if (!exception_print_same (prev_err, err)) | |
3d6e9d23 | 232 | warning ("%s", err.what ()); |
ecf45d2c | 233 | } |
57d1de9c | 234 | } |
ecf45d2c SL |
235 | } |
236 | ||
237 | /* See gdbcore.h. */ | |
238 | ||
a2fedca9 PW |
239 | void |
240 | validate_exec_file (int from_tty) | |
241 | { | |
242 | /* If user asked to ignore the mismatch, do nothing. */ | |
243 | if (exec_file_mismatch_mode == exec_file_mismatch_off) | |
244 | return; | |
245 | ||
246 | const char *current_exec_file = get_exec_file (0); | |
247 | struct inferior *inf = current_inferior (); | |
248 | /* Try to determine a filename from the process itself. */ | |
249 | const char *pid_exec_file = target_pid_to_exec_file (inf->pid); | |
250 | ||
251 | /* If wee cannot validate the exec file, return. */ | |
252 | if (current_exec_file == NULL || pid_exec_file == NULL) | |
253 | return; | |
254 | ||
255 | std::string exec_file_target (pid_exec_file); | |
256 | ||
257 | /* In case the exec file is not local, exec_file_target has to point at | |
258 | the target file system. */ | |
259 | if (is_target_filename (current_exec_file) && !target_filesystem_is_local ()) | |
260 | exec_file_target = TARGET_SYSROOT_PREFIX + exec_file_target; | |
261 | ||
262 | if (exec_file_target != current_exec_file) | |
263 | { | |
264 | warning | |
265 | (_("Mismatch between current exec-file %ps\n" | |
266 | "and automatically determined exec-file %ps\n" | |
267 | "exec-file-mismatch handling is currently \"%s\""), | |
268 | styled_string (file_name_style.style (), current_exec_file), | |
269 | styled_string (file_name_style.style (), exec_file_target.c_str ()), | |
270 | exec_file_mismatch_names[exec_file_mismatch_mode]); | |
271 | if (exec_file_mismatch_mode == exec_file_mismatch_ask) | |
272 | { | |
273 | symfile_add_flags add_flags = SYMFILE_MAINLINE; | |
274 | if (from_tty) | |
275 | add_flags |= SYMFILE_VERBOSE; | |
276 | try | |
277 | { | |
278 | symbol_file_add_main (exec_file_target.c_str (), add_flags); | |
279 | exec_file_attach (exec_file_target.c_str (), from_tty); | |
280 | } | |
281 | catch (gdb_exception_error &err) | |
282 | { | |
283 | warning (_("loading %ps %s"), | |
284 | styled_string (file_name_style.style (), | |
285 | exec_file_target.c_str ()), | |
286 | err.message != NULL ? err.what () : "error"); | |
287 | } | |
288 | } | |
289 | } | |
290 | } | |
291 | ||
292 | /* See gdbcore.h. */ | |
293 | ||
ecf45d2c SL |
294 | void |
295 | exec_file_locate_attach (int pid, int defer_bp_reset, int from_tty) | |
296 | { | |
797bc1cb | 297 | char *exec_file_target; |
ecf45d2c SL |
298 | symfile_add_flags add_flags = 0; |
299 | ||
300 | /* Do nothing if we already have an executable filename. */ | |
301 | if (get_exec_file (0) != NULL) | |
302 | return; | |
303 | ||
304 | /* Try to determine a filename from the process itself. */ | |
305 | exec_file_target = target_pid_to_exec_file (pid); | |
306 | if (exec_file_target == NULL) | |
57d1de9c | 307 | { |
ecf45d2c SL |
308 | warning (_("No executable has been specified and target does not " |
309 | "support\n" | |
310 | "determining executable automatically. " | |
311 | "Try using the \"file\" command.")); | |
312 | return; | |
57d1de9c | 313 | } |
88178e82 | 314 | |
797bc1cb TT |
315 | gdb::unique_xmalloc_ptr<char> exec_file_host |
316 | = exec_file_find (exec_file_target, NULL); | |
ecf45d2c SL |
317 | |
318 | if (defer_bp_reset) | |
319 | add_flags |= SYMFILE_DEFER_BP_RESET; | |
320 | ||
321 | if (from_tty) | |
322 | add_flags |= SYMFILE_VERBOSE; | |
323 | ||
324 | /* Attempt to open the exec file. */ | |
797bc1cb | 325 | try_open_exec_file (exec_file_host.get (), current_inferior (), add_flags); |
a10de604 GB |
326 | } |
327 | ||
907083d1 | 328 | /* Set FILENAME as the new exec file. |
c906108c | 329 | |
c5aa993b JM |
330 | This function is intended to be behave essentially the same |
331 | as exec_file_command, except that the latter will detect when | |
332 | a target is being debugged, and will ask the user whether it | |
333 | should be shut down first. (If the answer is "no", then the | |
334 | new file is ignored.) | |
c906108c | 335 | |
c5aa993b JM |
336 | This file is used by exec_file_command, to do the work of opening |
337 | and processing the exec file after any prompting has happened. | |
c906108c | 338 | |
c5aa993b JM |
339 | And, it is used by child_attach, when the attach command was |
340 | given a pid but not a exec pathname, and the attach command could | |
341 | figure out the pathname from the pid. (In this case, we shouldn't | |
342 | ask the user whether the current target should be shut down -- | |
907083d1 | 343 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
344 | |
345 | void | |
5f08566b | 346 | exec_file_attach (const char *filename, int from_tty) |
c906108c | 347 | { |
9b333ba3 TT |
348 | /* First, acquire a reference to the current exec_bfd. We release |
349 | this at the end of the function; but acquiring it now lets the | |
350 | BFD cache return it if this call refers to the same file. */ | |
1831a9f9 | 351 | gdb_bfd_ref_ptr exec_bfd_holder = gdb_bfd_ref_ptr::new_reference (exec_bfd); |
192b62ce | 352 | |
c906108c | 353 | /* Remove any previous exec file. */ |
6c95b8df | 354 | exec_close (); |
c906108c SS |
355 | |
356 | /* Now open and digest the file the user requested, if any. */ | |
357 | ||
1adeb98a FN |
358 | if (!filename) |
359 | { | |
360 | if (from_tty) | |
a3f17187 | 361 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
362 | |
363 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
364 | } |
365 | else | |
c906108c | 366 | { |
64c0b5de | 367 | int load_via_target = 0; |
14278e1f | 368 | const char *scratch_pathname, *canonical_pathname; |
c906108c | 369 | int scratch_chan; |
07b82ea5 | 370 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 371 | char **matching; |
c5aa993b | 372 | |
64c0b5de GB |
373 | if (is_target_filename (filename)) |
374 | { | |
375 | if (target_filesystem_is_local ()) | |
376 | filename += strlen (TARGET_SYSROOT_PREFIX); | |
377 | else | |
378 | load_via_target = 1; | |
379 | } | |
380 | ||
14278e1f | 381 | gdb::unique_xmalloc_ptr<char> canonical_storage, scratch_storage; |
64c0b5de | 382 | if (load_via_target) |
c5aa993b | 383 | { |
64c0b5de GB |
384 | /* gdb_bfd_fopen does not support "target:" filenames. */ |
385 | if (write_files) | |
386 | warning (_("writing into executable files is " | |
387 | "not supported for %s sysroots"), | |
388 | TARGET_SYSROOT_PREFIX); | |
389 | ||
14278e1f | 390 | scratch_pathname = filename; |
64c0b5de | 391 | scratch_chan = -1; |
64c0b5de | 392 | canonical_pathname = scratch_pathname; |
c5aa993b | 393 | } |
64c0b5de GB |
394 | else |
395 | { | |
396 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
397 | filename, write_files ? | |
398 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, | |
e0cc99a6 | 399 | &scratch_storage); |
64c0b5de GB |
400 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
401 | if (scratch_chan < 0) | |
402 | { | |
0ae1c716 | 403 | char *exename = (char *) alloca (strlen (filename) + 5); |
64c0b5de GB |
404 | |
405 | strcat (strcpy (exename, filename), ".exe"); | |
406 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, | |
407 | exename, write_files ? | |
408 | O_RDWR | O_BINARY | |
409 | : O_RDONLY | O_BINARY, | |
e0cc99a6 | 410 | &scratch_storage); |
64c0b5de | 411 | } |
c906108c | 412 | #endif |
64c0b5de GB |
413 | if (scratch_chan < 0) |
414 | perror_with_name (filename); | |
a4453b7e | 415 | |
e0cc99a6 | 416 | scratch_pathname = scratch_storage.get (); |
a4453b7e | 417 | |
64c0b5de GB |
418 | /* gdb_bfd_open (and its variants) prefers canonicalized |
419 | pathname for better BFD caching. */ | |
14278e1f TT |
420 | canonical_storage = gdb_realpath (scratch_pathname); |
421 | canonical_pathname = canonical_storage.get (); | |
64c0b5de | 422 | } |
1f0c4988 | 423 | |
192b62ce | 424 | gdb_bfd_ref_ptr temp; |
64c0b5de | 425 | if (write_files && !load_via_target) |
192b62ce TT |
426 | temp = gdb_bfd_fopen (canonical_pathname, gnutarget, |
427 | FOPEN_RUB, scratch_chan); | |
1c00ec6b | 428 | else |
192b62ce TT |
429 | temp = gdb_bfd_open (canonical_pathname, gnutarget, scratch_chan); |
430 | exec_bfd = temp.release (); | |
c906108c SS |
431 | |
432 | if (!exec_bfd) | |
9fe4a216 | 433 | { |
a2fedca9 PW |
434 | error (_("\"%ps\": could not open as an executable file: %s."), |
435 | styled_string (file_name_style.style (), scratch_pathname), | |
436 | bfd_errmsg (bfd_get_error ())); | |
9fe4a216 | 437 | } |
c906108c | 438 | |
64c0b5de GB |
439 | /* gdb_realpath_keepfile resolves symlinks on the local |
440 | filesystem and so cannot be used for "target:" files. */ | |
1f0c4988 | 441 | gdb_assert (exec_filename == NULL); |
64c0b5de GB |
442 | if (load_via_target) |
443 | exec_filename = xstrdup (bfd_get_filename (exec_bfd)); | |
444 | else | |
4971c9a7 | 445 | exec_filename = gdb_realpath_keepfile (scratch_pathname).release (); |
1f0c4988 | 446 | |
d18b8b7a | 447 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
448 | { |
449 | /* Make sure to close exec_bfd, or else "run" might try to use | |
450 | it. */ | |
6c95b8df | 451 | exec_close (); |
a2fedca9 PW |
452 | error (_("\"%ps\": not in executable format: %s"), |
453 | styled_string (file_name_style.style (), scratch_pathname), | |
803c08d0 | 454 | gdb_bfd_errmsg (bfd_get_error (), matching).c_str ()); |
c906108c SS |
455 | } |
456 | ||
07b82ea5 | 457 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
458 | { |
459 | /* Make sure to close exec_bfd, or else "run" might try to use | |
460 | it. */ | |
6c95b8df | 461 | exec_close (); |
a2fedca9 PW |
462 | error (_("\"%ps\": can't find the file sections: %s"), |
463 | styled_string (file_name_style.style (), scratch_pathname), | |
464 | bfd_errmsg (bfd_get_error ())); | |
c906108c SS |
465 | } |
466 | ||
c04ea773 DJ |
467 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
468 | ||
c906108c SS |
469 | validate_files (); |
470 | ||
471 | set_gdbarch_from_file (exec_bfd); | |
472 | ||
07b82ea5 | 473 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
474 | list of sections. This possibly pushes the exec_ops |
475 | target. */ | |
ed9eebaf | 476 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 477 | xfree (sections); |
c906108c SS |
478 | |
479 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
480 | if (deprecated_exec_file_display_hook) |
481 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 482 | } |
9b333ba3 | 483 | |
ce7d4522 | 484 | bfd_cache_close_all (); |
76727919 | 485 | gdb::observers::executable_changed.notify (); |
c906108c SS |
486 | } |
487 | ||
488 | /* Process the first arg in ARGS as the new exec file. | |
489 | ||
c5aa993b JM |
490 | Note that we have to explicitly ignore additional args, since we can |
491 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
492 | which can take multiple args. |
493 | ||
0963b4bd | 494 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 495 | |
1adeb98a | 496 | static void |
1d8b34a7 | 497 | exec_file_command (const char *args, int from_tty) |
c906108c | 498 | { |
4c42eaff DJ |
499 | if (from_tty && target_has_execution |
500 | && !query (_("A program is being debugged already.\n" | |
501 | "Are you sure you want to change the file? "))) | |
502 | error (_("File not changed.")); | |
1adeb98a FN |
503 | |
504 | if (args) | |
505 | { | |
506 | /* Scan through the args and pick up the first non option arg | |
507 | as the filename. */ | |
508 | ||
773a1edc TT |
509 | gdb_argv built_argv (args); |
510 | char **argv = built_argv.get (); | |
1adeb98a FN |
511 | |
512 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
513 | {; | |
514 | } | |
515 | if (*argv == NULL) | |
8a3fe4f8 | 516 | error (_("No executable file name was specified")); |
1adeb98a | 517 | |
773a1edc TT |
518 | gdb::unique_xmalloc_ptr<char> filename (tilde_expand (*argv)); |
519 | exec_file_attach (filename.get (), from_tty); | |
1adeb98a FN |
520 | } |
521 | else | |
522 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
523 | } |
524 | ||
0963b4bd | 525 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
526 | What a novelty. Why did GDB go through four major releases before this |
527 | command was added? */ | |
528 | ||
529 | static void | |
1d8b34a7 | 530 | file_command (const char *arg, int from_tty) |
c906108c SS |
531 | { |
532 | /* FIXME, if we lose on reading the symbol file, we should revert | |
533 | the exec file, but that's rough. */ | |
534 | exec_file_command (arg, from_tty); | |
535 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
536 | if (deprecated_file_changed_hook) |
537 | deprecated_file_changed_hook (arg); | |
c906108c | 538 | } |
c906108c | 539 | \f |
c5aa993b | 540 | |
0963b4bd | 541 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
542 | table_pp_char is a char * to get it through bfd_map_over_sections; |
543 | we cast it back to its proper type. */ | |
544 | ||
545 | static void | |
7be0c536 AC |
546 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
547 | void *table_pp_char) | |
c906108c | 548 | { |
0542c86d | 549 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
550 | flagword aflag; |
551 | ||
2b2848e2 DE |
552 | gdb_assert (abfd == asect->owner); |
553 | ||
0f5d55d8 JB |
554 | /* Check the section flags, but do not discard zero-length sections, since |
555 | some symbols may still be attached to this section. For instance, we | |
556 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
557 | section to which a symbol named "_end" was attached. The address | |
558 | of this symbol still needs to be relocated. */ | |
fd361982 | 559 | aflag = bfd_section_flags (asect); |
c906108c SS |
560 | if (!(aflag & SEC_ALLOC)) |
561 | return; | |
0f5d55d8 | 562 | |
046ac79f | 563 | (*table_pp)->owner = NULL; |
c906108c | 564 | (*table_pp)->the_bfd_section = asect; |
fd361982 AM |
565 | (*table_pp)->addr = bfd_section_vma (asect); |
566 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (asect); | |
c906108c SS |
567 | (*table_pp)++; |
568 | } | |
569 | ||
a5b1fd27 DE |
570 | /* See exec.h. */ |
571 | ||
572 | void | |
573 | clear_section_table (struct target_section_table *table) | |
574 | { | |
575 | xfree (table->sections); | |
576 | table->sections = table->sections_end = NULL; | |
577 | } | |
578 | ||
579 | /* Resize section table TABLE by ADJUSTMENT. | |
580 | ADJUSTMENT may be negative, in which case the caller must have already | |
581 | removed the sections being deleted. | |
582 | Returns the old size. */ | |
583 | ||
584 | static int | |
585 | resize_section_table (struct target_section_table *table, int adjustment) | |
07b82ea5 | 586 | { |
07b82ea5 PA |
587 | int old_count; |
588 | int new_count; | |
589 | ||
07b82ea5 PA |
590 | old_count = table->sections_end - table->sections; |
591 | ||
a5b1fd27 | 592 | new_count = adjustment + old_count; |
07b82ea5 PA |
593 | |
594 | if (new_count) | |
595 | { | |
224c3ddb SM |
596 | table->sections = XRESIZEVEC (struct target_section, table->sections, |
597 | new_count); | |
07b82ea5 PA |
598 | table->sections_end = table->sections + new_count; |
599 | } | |
600 | else | |
a5b1fd27 | 601 | clear_section_table (table); |
07b82ea5 PA |
602 | |
603 | return old_count; | |
604 | } | |
605 | ||
c906108c SS |
606 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
607 | Returns 0 if OK, 1 on error. */ | |
608 | ||
609 | int | |
0542c86d PA |
610 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
611 | struct target_section **end) | |
c906108c SS |
612 | { |
613 | unsigned count; | |
614 | ||
615 | count = bfd_count_sections (some_bfd); | |
616 | if (*start) | |
b8c9b27d | 617 | xfree (* start); |
8d749320 | 618 | *start = XNEWVEC (struct target_section, count); |
c906108c | 619 | *end = *start; |
c5aa993b | 620 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
e2ff18a0 SM |
621 | |
622 | gdb_assert (*end <= *start + count); | |
623 | ||
c906108c SS |
624 | /* We could realloc the table, but it probably loses for most files. */ |
625 | return 0; | |
626 | } | |
07b82ea5 PA |
627 | |
628 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
629 | current set of target sections. */ | |
630 | ||
631 | void | |
046ac79f | 632 | add_target_sections (void *owner, |
ed9eebaf | 633 | struct target_section *sections, |
07b82ea5 PA |
634 | struct target_section *sections_end) |
635 | { | |
636 | int count; | |
637 | struct target_section_table *table = current_target_sections; | |
638 | ||
639 | count = sections_end - sections; | |
640 | ||
641 | if (count > 0) | |
642 | { | |
643 | int space = resize_section_table (table, count); | |
ed9eebaf | 644 | int i; |
d7f9d729 | 645 | |
ed9eebaf TT |
646 | for (i = 0; i < count; ++i) |
647 | { | |
648 | table->sections[space + i] = sections[i]; | |
046ac79f | 649 | table->sections[space + i].owner = owner; |
ed9eebaf | 650 | } |
07b82ea5 | 651 | |
53af73bf | 652 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
5b6d1e4f PA |
653 | program_space *curr_pspace = current_program_space; |
654 | ||
07b82ea5 | 655 | /* If these are the first file sections we can provide memory |
5b6d1e4f PA |
656 | from, push the file_stratum target. Must do this in all |
657 | inferiors sharing the program space. */ | |
658 | for (inferior *inf : all_inferiors ()) | |
659 | { | |
660 | if (inf->pspace != curr_pspace) | |
661 | continue; | |
662 | ||
663 | if (inf->target_is_pushed (&exec_ops)) | |
664 | continue; | |
665 | ||
666 | switch_to_inferior_no_thread (inf); | |
667 | push_target (&exec_ops); | |
668 | } | |
07b82ea5 PA |
669 | } |
670 | } | |
671 | ||
76ad5e1e NB |
672 | /* Add the sections of OBJFILE to the current set of target sections. */ |
673 | ||
674 | void | |
675 | add_target_sections_of_objfile (struct objfile *objfile) | |
676 | { | |
677 | struct target_section_table *table = current_target_sections; | |
678 | struct obj_section *osect; | |
679 | int space; | |
680 | unsigned count = 0; | |
681 | struct target_section *ts; | |
682 | ||
683 | if (objfile == NULL) | |
684 | return; | |
685 | ||
686 | /* Compute the number of sections to add. */ | |
687 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
688 | { | |
fd361982 | 689 | if (bfd_section_size (osect->the_bfd_section) == 0) |
76ad5e1e NB |
690 | continue; |
691 | count++; | |
692 | } | |
693 | ||
694 | if (count == 0) | |
695 | return; | |
696 | ||
697 | space = resize_section_table (table, count); | |
698 | ||
699 | ts = table->sections + space; | |
700 | ||
701 | ALL_OBJFILE_OSECTIONS (objfile, osect) | |
702 | { | |
fd361982 | 703 | if (bfd_section_size (osect->the_bfd_section) == 0) |
76ad5e1e NB |
704 | continue; |
705 | ||
706 | gdb_assert (ts < table->sections + space + count); | |
707 | ||
708 | ts->addr = obj_section_addr (osect); | |
709 | ts->endaddr = obj_section_endaddr (osect); | |
710 | ts->the_bfd_section = osect->the_bfd_section; | |
711 | ts->owner = (void *) objfile; | |
712 | ||
713 | ts++; | |
714 | } | |
715 | } | |
716 | ||
046ac79f JK |
717 | /* Remove all target sections owned by OWNER. |
718 | OWNER must be the same value passed to add_target_sections. */ | |
07b82ea5 PA |
719 | |
720 | void | |
046ac79f | 721 | remove_target_sections (void *owner) |
07b82ea5 PA |
722 | { |
723 | struct target_section *src, *dest; | |
07b82ea5 PA |
724 | struct target_section_table *table = current_target_sections; |
725 | ||
046ac79f JK |
726 | gdb_assert (owner != NULL); |
727 | ||
07b82ea5 PA |
728 | dest = table->sections; |
729 | for (src = table->sections; src < table->sections_end; src++) | |
046ac79f | 730 | if (src->owner != owner) |
07b82ea5 PA |
731 | { |
732 | /* Keep this section. */ | |
733 | if (dest < src) | |
734 | *dest = *src; | |
735 | dest++; | |
736 | } | |
737 | ||
738 | /* If we've dropped any sections, resize the section table. */ | |
739 | if (dest < src) | |
740 | { | |
741 | int old_count; | |
742 | ||
743 | old_count = resize_section_table (table, dest - src); | |
744 | ||
745 | /* If we don't have any more sections to read memory from, | |
5b6d1e4f PA |
746 | remove the file_stratum target from the stack of each |
747 | inferior sharing the program space. */ | |
07b82ea5 | 748 | if (old_count + (dest - src) == 0) |
6c95b8df | 749 | { |
53af73bf | 750 | scoped_restore_current_pspace_and_thread restore_pspace_thread; |
5b6d1e4f PA |
751 | program_space *curr_pspace = current_program_space; |
752 | ||
753 | for (inferior *inf : all_inferiors ()) | |
754 | { | |
755 | if (inf->pspace != curr_pspace) | |
756 | continue; | |
6c95b8df | 757 | |
5b6d1e4f PA |
758 | if (inf->pspace->target_sections.sections |
759 | != inf->pspace->target_sections.sections_end) | |
760 | continue; | |
6c95b8df | 761 | |
5b6d1e4f PA |
762 | switch_to_inferior_no_thread (inf); |
763 | unpush_target (&exec_ops); | |
764 | } | |
6c95b8df | 765 | } |
07b82ea5 PA |
766 | } |
767 | } | |
768 | ||
5b6d1e4f PA |
769 | /* See exec.h. */ |
770 | ||
771 | void | |
772 | exec_on_vfork () | |
773 | { | |
774 | if (current_program_space->target_sections.sections | |
775 | != current_program_space->target_sections.sections_end) | |
776 | push_target (&exec_ops); | |
777 | } | |
778 | ||
c906108c | 779 | \f |
348f8c02 | 780 | |
1ca49d37 YQ |
781 | enum target_xfer_status |
782 | exec_read_partial_read_only (gdb_byte *readbuf, ULONGEST offset, | |
783 | ULONGEST len, ULONGEST *xfered_len) | |
784 | { | |
785 | /* It's unduly pedantic to refuse to look at the executable for | |
786 | read-only pieces; so do the equivalent of readonly regions aka | |
787 | QTro packet. */ | |
788 | if (exec_bfd != NULL) | |
789 | { | |
790 | asection *s; | |
791 | bfd_size_type size; | |
792 | bfd_vma vma; | |
793 | ||
794 | for (s = exec_bfd->sections; s; s = s->next) | |
795 | { | |
796 | if ((s->flags & SEC_LOAD) == 0 | |
797 | || (s->flags & SEC_READONLY) == 0) | |
798 | continue; | |
799 | ||
800 | vma = s->vma; | |
fd361982 | 801 | size = bfd_section_size (s); |
1ca49d37 YQ |
802 | if (vma <= offset && offset < (vma + size)) |
803 | { | |
804 | ULONGEST amt; | |
805 | ||
806 | amt = (vma + size) - offset; | |
807 | if (amt > len) | |
808 | amt = len; | |
809 | ||
810 | amt = bfd_get_section_contents (exec_bfd, s, | |
811 | readbuf, offset - vma, amt); | |
812 | ||
813 | if (amt == 0) | |
814 | return TARGET_XFER_EOF; | |
815 | else | |
816 | { | |
817 | *xfered_len = amt; | |
818 | return TARGET_XFER_OK; | |
819 | } | |
820 | } | |
821 | } | |
822 | } | |
823 | ||
824 | /* Indicate failure to find the requested memory block. */ | |
825 | return TARGET_XFER_E_IO; | |
826 | } | |
827 | ||
a79b1bc6 | 828 | /* Return all read-only memory ranges found in the target section |
5a2eb0ef | 829 | table defined by SECTIONS and SECTIONS_END, starting at (and |
a79b1bc6 | 830 | intersected with) MEMADDR for LEN bytes. */ |
5a2eb0ef | 831 | |
a79b1bc6 SM |
832 | static std::vector<mem_range> |
833 | section_table_available_memory (CORE_ADDR memaddr, ULONGEST len, | |
e6ca34fc PA |
834 | struct target_section *sections, |
835 | struct target_section *sections_end) | |
836 | { | |
a79b1bc6 | 837 | std::vector<mem_range> memory; |
e6ca34fc | 838 | |
a79b1bc6 | 839 | for (target_section *p = sections; p < sections_end; p++) |
e6ca34fc | 840 | { |
fd361982 | 841 | if ((bfd_section_flags (p->the_bfd_section) & SEC_READONLY) == 0) |
e6ca34fc PA |
842 | continue; |
843 | ||
844 | /* Copy the meta-data, adjusted. */ | |
845 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
846 | { | |
847 | ULONGEST lo1, hi1, lo2, hi2; | |
e6ca34fc PA |
848 | |
849 | lo1 = memaddr; | |
850 | hi1 = memaddr + len; | |
851 | ||
852 | lo2 = p->addr; | |
853 | hi2 = p->endaddr; | |
854 | ||
a79b1bc6 SM |
855 | CORE_ADDR start = std::max (lo1, lo2); |
856 | int length = std::min (hi1, hi2) - start; | |
e6ca34fc | 857 | |
a79b1bc6 | 858 | memory.emplace_back (start, length); |
e6ca34fc PA |
859 | } |
860 | } | |
861 | ||
862 | return memory; | |
863 | } | |
864 | ||
1ee79381 YQ |
865 | enum target_xfer_status |
866 | section_table_read_available_memory (gdb_byte *readbuf, ULONGEST offset, | |
867 | ULONGEST len, ULONGEST *xfered_len) | |
868 | { | |
a79b1bc6 SM |
869 | target_section_table *table = target_get_section_table (&exec_ops); |
870 | std::vector<mem_range> available_memory | |
871 | = section_table_available_memory (offset, len, | |
872 | table->sections, table->sections_end); | |
1ee79381 | 873 | |
a79b1bc6 | 874 | normalize_mem_ranges (&available_memory); |
1ee79381 | 875 | |
a79b1bc6 | 876 | for (const mem_range &r : available_memory) |
1ee79381 | 877 | { |
a79b1bc6 | 878 | if (mem_ranges_overlap (r.start, r.length, offset, len)) |
1ee79381 YQ |
879 | { |
880 | CORE_ADDR end; | |
881 | enum target_xfer_status status; | |
882 | ||
883 | /* Get the intersection window. */ | |
a79b1bc6 | 884 | end = std::min<CORE_ADDR> (offset + len, r.start + r.length); |
1ee79381 YQ |
885 | |
886 | gdb_assert (end - offset <= len); | |
887 | ||
a79b1bc6 | 888 | if (offset >= r.start) |
1ee79381 YQ |
889 | status = exec_read_partial_read_only (readbuf, offset, |
890 | end - offset, | |
891 | xfered_len); | |
892 | else | |
893 | { | |
a79b1bc6 | 894 | *xfered_len = r.start - offset; |
bc113b4e | 895 | status = TARGET_XFER_UNAVAILABLE; |
1ee79381 | 896 | } |
1ee79381 YQ |
897 | return status; |
898 | } | |
899 | } | |
1ee79381 YQ |
900 | |
901 | *xfered_len = len; | |
bc113b4e | 902 | return TARGET_XFER_UNAVAILABLE; |
1ee79381 YQ |
903 | } |
904 | ||
9b409511 | 905 | enum target_xfer_status |
07b82ea5 | 906 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, |
b55e14c7 | 907 | ULONGEST offset, ULONGEST len, |
9b409511 | 908 | ULONGEST *xfered_len, |
07b82ea5 PA |
909 | struct target_section *sections, |
910 | struct target_section *sections_end, | |
911 | const char *section_name) | |
c906108c | 912 | { |
020cc13c | 913 | int res; |
0542c86d | 914 | struct target_section *p; |
07b82ea5 PA |
915 | ULONGEST memaddr = offset; |
916 | ULONGEST memend = memaddr + len; | |
c906108c | 917 | |
e2ff18a0 | 918 | gdb_assert (len != 0); |
c906108c | 919 | |
348f8c02 | 920 | for (p = sections; p < sections_end; p++) |
c906108c | 921 | { |
2b2848e2 DE |
922 | struct bfd_section *asect = p->the_bfd_section; |
923 | bfd *abfd = asect->owner; | |
924 | ||
925 | if (section_name && strcmp (section_name, asect->name) != 0) | |
0963b4bd | 926 | continue; /* not the section we need. */ |
c906108c | 927 | if (memaddr >= p->addr) |
3db26b01 JB |
928 | { |
929 | if (memend <= p->endaddr) | |
930 | { | |
931 | /* Entire transfer is within this section. */ | |
07b82ea5 | 932 | if (writebuf) |
2b2848e2 | 933 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 934 | writebuf, memaddr - p->addr, |
85302095 AC |
935 | len); |
936 | else | |
2b2848e2 | 937 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 938 | readbuf, memaddr - p->addr, |
85302095 | 939 | len); |
9b409511 YQ |
940 | |
941 | if (res != 0) | |
942 | { | |
943 | *xfered_len = len; | |
944 | return TARGET_XFER_OK; | |
945 | } | |
946 | else | |
947 | return TARGET_XFER_EOF; | |
3db26b01 JB |
948 | } |
949 | else if (memaddr >= p->endaddr) | |
950 | { | |
951 | /* This section ends before the transfer starts. */ | |
952 | continue; | |
953 | } | |
954 | else | |
955 | { | |
956 | /* This section overlaps the transfer. Just do half. */ | |
957 | len = p->endaddr - memaddr; | |
07b82ea5 | 958 | if (writebuf) |
2b2848e2 | 959 | res = bfd_set_section_contents (abfd, asect, |
07b82ea5 | 960 | writebuf, memaddr - p->addr, |
85302095 AC |
961 | len); |
962 | else | |
2b2848e2 | 963 | res = bfd_get_section_contents (abfd, asect, |
07b82ea5 | 964 | readbuf, memaddr - p->addr, |
85302095 | 965 | len); |
9b409511 YQ |
966 | if (res != 0) |
967 | { | |
968 | *xfered_len = len; | |
969 | return TARGET_XFER_OK; | |
970 | } | |
971 | else | |
972 | return TARGET_XFER_EOF; | |
3db26b01 JB |
973 | } |
974 | } | |
c906108c SS |
975 | } |
976 | ||
9b409511 | 977 | return TARGET_XFER_EOF; /* We can't help. */ |
c906108c | 978 | } |
348f8c02 | 979 | |
f6ac5f3d PA |
980 | struct target_section_table * |
981 | exec_target::get_section_table () | |
348f8c02 | 982 | { |
07b82ea5 | 983 | return current_target_sections; |
348f8c02 PA |
984 | } |
985 | ||
f6ac5f3d PA |
986 | enum target_xfer_status |
987 | exec_target::xfer_partial (enum target_object object, | |
988 | const char *annex, gdb_byte *readbuf, | |
989 | const gdb_byte *writebuf, | |
990 | ULONGEST offset, ULONGEST len, ULONGEST *xfered_len) | |
348f8c02 | 991 | { |
f6ac5f3d | 992 | struct target_section_table *table = get_section_table (); |
07b82ea5 PA |
993 | |
994 | if (object == TARGET_OBJECT_MEMORY) | |
995 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
9b409511 | 996 | offset, len, xfered_len, |
07b82ea5 PA |
997 | table->sections, |
998 | table->sections_end, | |
999 | NULL); | |
1000 | else | |
2ed4b548 | 1001 | return TARGET_XFER_E_IO; |
348f8c02 | 1002 | } |
c906108c | 1003 | \f |
c5aa993b | 1004 | |
c906108c | 1005 | void |
07b82ea5 | 1006 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 1007 | { |
5af949e3 | 1008 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 1009 | struct target_section *p; |
17a912b6 | 1010 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 1011 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 1012 | |
a2fedca9 PW |
1013 | printf_filtered ("\t`%ps', ", |
1014 | styled_string (file_name_style.style (), | |
1015 | bfd_get_filename (abfd))); | |
c906108c | 1016 | wrap_here (" "); |
a3f17187 | 1017 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 1018 | if (abfd == exec_bfd) |
51bee8e9 | 1019 | { |
3e43a32a MS |
1020 | /* gcc-3.4 does not like the initialization in |
1021 | <p == t->sections_end>. */ | |
d904de5b | 1022 | bfd_vma displacement = 0; |
2f1bdd26 | 1023 | bfd_vma entry_point; |
51bee8e9 JK |
1024 | |
1025 | for (p = t->sections; p < t->sections_end; p++) | |
1026 | { | |
2b2848e2 | 1027 | struct bfd_section *psect = p->the_bfd_section; |
51bee8e9 | 1028 | |
fd361982 | 1029 | if ((bfd_section_flags (psect) & (SEC_ALLOC | SEC_LOAD)) |
51bee8e9 JK |
1030 | != (SEC_ALLOC | SEC_LOAD)) |
1031 | continue; | |
1032 | ||
fd361982 AM |
1033 | if (bfd_section_vma (psect) <= abfd->start_address |
1034 | && abfd->start_address < (bfd_section_vma (psect) | |
1035 | + bfd_section_size (psect))) | |
51bee8e9 | 1036 | { |
fd361982 | 1037 | displacement = p->addr - bfd_section_vma (psect); |
51bee8e9 JK |
1038 | break; |
1039 | } | |
1040 | } | |
1041 | if (p == t->sections_end) | |
a2fedca9 PW |
1042 | warning (_("Cannot find section for the entry point of %ps."), |
1043 | styled_string (file_name_style.style (), | |
1044 | bfd_get_filename (abfd))); | |
51bee8e9 | 1045 | |
2f1bdd26 MGD |
1046 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
1047 | bfd_get_start_address (abfd) | |
1048 | + displacement); | |
51bee8e9 | 1049 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 1050 | paddress (gdbarch, entry_point)); |
51bee8e9 | 1051 | } |
07b82ea5 | 1052 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 1053 | { |
2b2848e2 DE |
1054 | struct bfd_section *psect = p->the_bfd_section; |
1055 | bfd *pbfd = psect->owner; | |
1056 | ||
bb599908 PH |
1057 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
1058 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
1059 | |
1060 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
1061 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
1062 | since most output will then be much wider than necessary. It | |
1063 | may make sense to test the size of the file and choose the | |
1064 | format string accordingly. */ | |
a3f17187 | 1065 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
1066 | if (info_verbose) |
1067 | printf_filtered (" @ %s", | |
2b2848e2 | 1068 | hex_string_custom (psect->filepos, 8)); |
fd361982 | 1069 | printf_filtered (" is %s", bfd_section_name (psect)); |
2b2848e2 | 1070 | if (pbfd != abfd) |
a2fedca9 PW |
1071 | printf_filtered (" in %ps", |
1072 | styled_string (file_name_style.style (), | |
1073 | bfd_get_filename (pbfd))); | |
c906108c SS |
1074 | printf_filtered ("\n"); |
1075 | } | |
1076 | } | |
1077 | ||
f6ac5f3d PA |
1078 | void |
1079 | exec_target::files_info () | |
c906108c | 1080 | { |
57008375 JK |
1081 | if (exec_bfd) |
1082 | print_section_info (current_target_sections, exec_bfd); | |
1083 | else | |
1084 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
1085 | } |
1086 | ||
1087 | static void | |
0b39b52e | 1088 | set_section_command (const char *args, int from_tty) |
c906108c | 1089 | { |
0542c86d | 1090 | struct target_section *p; |
0b39b52e | 1091 | const char *secname; |
c906108c SS |
1092 | unsigned seclen; |
1093 | unsigned long secaddr; | |
1094 | char secprint[100]; | |
1095 | long offset; | |
07b82ea5 | 1096 | struct target_section_table *table; |
c906108c SS |
1097 | |
1098 | if (args == 0) | |
8a3fe4f8 | 1099 | error (_("Must specify section name and its virtual address")); |
c906108c | 1100 | |
0963b4bd | 1101 | /* Parse out section name. */ |
c5aa993b | 1102 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
1103 | seclen = args - secname; |
1104 | ||
0963b4bd | 1105 | /* Parse out new virtual address. */ |
c906108c SS |
1106 | secaddr = parse_and_eval_address (args); |
1107 | ||
07b82ea5 PA |
1108 | table = current_target_sections; |
1109 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 1110 | { |
fd361982 AM |
1111 | if (!strncmp (secname, bfd_section_name (p->the_bfd_section), seclen) |
1112 | && bfd_section_name (p->the_bfd_section)[seclen] == '\0') | |
c5aa993b JM |
1113 | { |
1114 | offset = secaddr - p->addr; | |
1115 | p->addr += offset; | |
1116 | p->endaddr += offset; | |
1117 | if (from_tty) | |
f6ac5f3d | 1118 | exec_ops.files_info (); |
c5aa993b JM |
1119 | return; |
1120 | } | |
c906108c | 1121 | } |
c906108c SS |
1122 | if (seclen >= sizeof (secprint)) |
1123 | seclen = sizeof (secprint) - 1; | |
1124 | strncpy (secprint, secname, seclen); | |
1125 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 1126 | error (_("Section %s not found"), secprint); |
c906108c SS |
1127 | } |
1128 | ||
30510692 DJ |
1129 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
1130 | it to ADDRESS. */ | |
c1bd25fd DJ |
1131 | |
1132 | void | |
1133 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
1134 | { | |
0542c86d | 1135 | struct target_section *p; |
07b82ea5 | 1136 | struct target_section_table *table; |
c1bd25fd | 1137 | |
07b82ea5 PA |
1138 | table = current_target_sections; |
1139 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 1140 | { |
2b2848e2 | 1141 | if (filename_cmp (filename, p->the_bfd_section->owner->filename) == 0 |
30510692 | 1142 | && index == p->the_bfd_section->index) |
c1bd25fd | 1143 | { |
30510692 | 1144 | p->endaddr += address - p->addr; |
c1bd25fd | 1145 | p->addr = address; |
c1bd25fd DJ |
1146 | } |
1147 | } | |
1148 | } | |
1149 | ||
57810aa7 | 1150 | bool |
f6ac5f3d | 1151 | exec_target::has_memory () |
c35b1492 PA |
1152 | { |
1153 | /* We can provide memory if we have any file/target sections to read | |
1154 | from. */ | |
1155 | return (current_target_sections->sections | |
1156 | != current_target_sections->sections_end); | |
1157 | } | |
1158 | ||
f6ac5f3d PA |
1159 | char * |
1160 | exec_target::make_corefile_notes (bfd *obfd, int *note_size) | |
83814951 TT |
1161 | { |
1162 | error (_("Can't create a corefile")); | |
1163 | } | |
be4d1333 | 1164 | |
f6ac5f3d PA |
1165 | int |
1166 | exec_target::find_memory_regions (find_memory_region_ftype func, void *data) | |
c906108c | 1167 | { |
f6ac5f3d | 1168 | return objfile_find_memory_regions (this, func, data); |
c906108c SS |
1169 | } |
1170 | ||
6c265988 | 1171 | void _initialize_exec (); |
c906108c | 1172 | void |
6c265988 | 1173 | _initialize_exec () |
c906108c SS |
1174 | { |
1175 | struct cmd_list_element *c; | |
1176 | ||
c906108c SS |
1177 | if (!dbx_commands) |
1178 | { | |
1a966eab AC |
1179 | c = add_cmd ("file", class_files, file_command, _("\ |
1180 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
1181 | It is read for its symbols, for getting the contents of pure memory,\n\ |
1182 | and it is the program executed when you use the `run' command.\n\ | |
1183 | If FILE cannot be found as specified, your execution directory path\n\ | |
1184 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 1185 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 1186 | set_cmd_completer (c, filename_completer); |
c906108c SS |
1187 | } |
1188 | ||
1a966eab AC |
1189 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
1190 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
1191 | If FILE cannot be found as specified, your execution directory path\n\ |
1192 | is searched for a command of that name.\n\ | |
1a966eab | 1193 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 1194 | set_cmd_completer (c, filename_completer); |
c906108c | 1195 | |
1bedd215 AC |
1196 | add_com ("section", class_files, set_section_command, _("\ |
1197 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
1198 | This can be used if the exec file does not contain section addresses,\n\ |
1199 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1200 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 1201 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 1202 | |
5bf193a2 AC |
1203 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
1204 | Set writing into executable and core files."), _("\ | |
1205 | Show writing into executable and core files."), NULL, | |
1206 | NULL, | |
920d2a44 | 1207 | show_write_files, |
5bf193a2 | 1208 | &setlist, &showlist); |
c5aa993b | 1209 | |
a2fedca9 PW |
1210 | add_setshow_enum_cmd ("exec-file-mismatch", class_support, |
1211 | exec_file_mismatch_names, | |
1212 | &exec_file_mismatch, | |
1213 | _("\ | |
1214 | Set exec-file-mismatch handling (ask|warn|off)."), | |
1215 | _("\ | |
1216 | Show exec-file-mismatch handling (ask|warn|off)."), | |
1217 | _("\ | |
1218 | Specifies how to handle a mismatch between the current exec-file name\n\ | |
1219 | loaded by GDB and the exec-file name automatically determined when attaching\n\ | |
1220 | to a process:\n\n\ | |
1221 | ask - warn the user and ask whether to load the determined exec-file.\n\ | |
1222 | warn - warn the user, but do not change the exec-file.\n\ | |
1223 | off - do not check for mismatch."), | |
1224 | set_exec_file_mismatch_command, | |
1225 | show_exec_file_mismatch_command, | |
1226 | &setlist, &showlist); | |
1227 | ||
d9f719f1 | 1228 | add_target (exec_target_info, exec_target_open, filename_completer); |
c906108c | 1229 | } |