Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
28e7fd62 | 3 | Copyright (C) 1988-2013 Free Software Foundation, Inc. |
c906108c | 4 | |
c5aa993b | 5 | This file is part of GDB. |
c906108c | 6 | |
c5aa993b JM |
7 | This program is free software; you can redistribute it and/or modify |
8 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 9 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 10 | (at your option) any later version. |
c906108c | 11 | |
c5aa993b JM |
12 | This program is distributed in the hope that it will be useful, |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
c906108c | 16 | |
c5aa993b | 17 | You should have received a copy of the GNU General Public License |
a9762ec7 | 18 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
19 | |
20 | #include "defs.h" | |
21 | #include "frame.h" | |
22 | #include "inferior.h" | |
23 | #include "target.h" | |
24 | #include "gdbcmd.h" | |
25 | #include "language.h" | |
0ba1096a | 26 | #include "filenames.h" |
c906108c SS |
27 | #include "symfile.h" |
28 | #include "objfiles.h" | |
c5f0f3d0 | 29 | #include "completer.h" |
fd0407d6 | 30 | #include "value.h" |
4646aa9d | 31 | #include "exec.h" |
ea53e89f | 32 | #include "observer.h" |
dacec2a8 | 33 | #include "arch-utils.h" |
6c95b8df PA |
34 | #include "gdbthread.h" |
35 | #include "progspace.h" | |
cbb099e8 | 36 | #include "gdb_bfd.h" |
c906108c | 37 | |
c906108c | 38 | #include <fcntl.h> |
dbda9972 | 39 | #include "readline/readline.h" |
c906108c SS |
40 | #include "gdb_string.h" |
41 | ||
42 | #include "gdbcore.h" | |
43 | ||
44 | #include <ctype.h> | |
45 | #include "gdb_stat.h" | |
c906108c SS |
46 | |
47 | #include "xcoffsolib.h" | |
48 | ||
a14ed312 | 49 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 50 | |
9a4105ab | 51 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
52 | |
53 | /* Prototypes for local functions */ | |
54 | ||
a14ed312 | 55 | static void file_command (char *, int); |
c906108c | 56 | |
a14ed312 | 57 | static void set_section_command (char *, int); |
c906108c | 58 | |
a14ed312 | 59 | static void exec_files_info (struct target_ops *); |
c906108c | 60 | |
a14ed312 | 61 | static void init_exec_ops (void); |
c906108c | 62 | |
a14ed312 | 63 | void _initialize_exec (void); |
c906108c | 64 | |
c906108c SS |
65 | /* The target vector for executable files. */ |
66 | ||
67 | struct target_ops exec_ops; | |
68 | ||
6c95b8df PA |
69 | /* True if the exec target is pushed on the stack. */ |
70 | static int using_exec_ops; | |
07b82ea5 | 71 | |
c906108c SS |
72 | /* Whether to open exec and core files read-only or read-write. */ |
73 | ||
74 | int write_files = 0; | |
920d2a44 AC |
75 | static void |
76 | show_write_files (struct ui_file *file, int from_tty, | |
77 | struct cmd_list_element *c, const char *value) | |
78 | { | |
79 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
80 | value); | |
81 | } | |
82 | ||
c906108c | 83 | |
c906108c SS |
84 | struct vmap *vmap; |
85 | ||
4c42eaff | 86 | static void |
1adeb98a FN |
87 | exec_open (char *args, int from_tty) |
88 | { | |
89 | target_preopen (from_tty); | |
90 | exec_file_attach (args, from_tty); | |
91 | } | |
92 | ||
07b82ea5 PA |
93 | /* Close and clear exec_bfd. If we end up with no target sections to |
94 | read memory from, this unpushes the exec_ops target. */ | |
95 | ||
6c95b8df PA |
96 | void |
97 | exec_close (void) | |
07b82ea5 PA |
98 | { |
99 | if (exec_bfd) | |
100 | { | |
101 | bfd *abfd = exec_bfd; | |
07b82ea5 | 102 | |
cbb099e8 | 103 | gdb_bfd_unref (abfd); |
07b82ea5 PA |
104 | |
105 | /* Removing target sections may close the exec_ops target. | |
106 | Clear exec_bfd before doing so to prevent recursion. */ | |
107 | exec_bfd = NULL; | |
108 | exec_bfd_mtime = 0; | |
109 | ||
ed9eebaf | 110 | remove_target_sections (&exec_bfd, abfd); |
07b82ea5 PA |
111 | } |
112 | } | |
113 | ||
6c95b8df PA |
114 | /* This is the target_close implementation. Clears all target |
115 | sections and closes all executable bfds from all program spaces. */ | |
116 | ||
c906108c | 117 | static void |
460014f5 | 118 | exec_close_1 (void) |
c906108c | 119 | { |
c906108c | 120 | struct vmap *vp, *nxt; |
c5aa993b | 121 | |
6c95b8df PA |
122 | using_exec_ops = 0; |
123 | ||
c5aa993b | 124 | for (nxt = vmap; nxt != NULL;) |
c906108c SS |
125 | { |
126 | vp = nxt; | |
127 | nxt = vp->nxt; | |
128 | ||
c906108c | 129 | if (vp->objfile) |
5799c0b9 | 130 | free_objfile (vp->objfile); |
da1cc82f TT |
131 | |
132 | gdb_bfd_unref (vp->bfd); | |
c906108c | 133 | |
b8c9b27d | 134 | xfree (vp); |
c906108c SS |
135 | } |
136 | ||
137 | vmap = NULL; | |
138 | ||
6c95b8df PA |
139 | { |
140 | struct program_space *ss; | |
141 | struct cleanup *old_chain; | |
c906108c | 142 | |
6c95b8df PA |
143 | old_chain = save_current_program_space (); |
144 | ALL_PSPACES (ss) | |
145 | { | |
146 | set_current_program_space (ss); | |
147 | ||
148 | /* Delete all target sections. */ | |
149 | resize_section_table | |
150 | (current_target_sections, | |
151 | -resize_section_table (current_target_sections, 0)); | |
152 | ||
153 | exec_close (); | |
154 | } | |
155 | ||
156 | do_cleanups (old_chain); | |
157 | } | |
c906108c SS |
158 | } |
159 | ||
1adeb98a FN |
160 | void |
161 | exec_file_clear (int from_tty) | |
162 | { | |
163 | /* Remove exec file. */ | |
6c95b8df | 164 | exec_close (); |
1adeb98a FN |
165 | |
166 | if (from_tty) | |
a3f17187 | 167 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
168 | } |
169 | ||
907083d1 | 170 | /* Set FILENAME as the new exec file. |
c906108c | 171 | |
c5aa993b JM |
172 | This function is intended to be behave essentially the same |
173 | as exec_file_command, except that the latter will detect when | |
174 | a target is being debugged, and will ask the user whether it | |
175 | should be shut down first. (If the answer is "no", then the | |
176 | new file is ignored.) | |
c906108c | 177 | |
c5aa993b JM |
178 | This file is used by exec_file_command, to do the work of opening |
179 | and processing the exec file after any prompting has happened. | |
c906108c | 180 | |
c5aa993b JM |
181 | And, it is used by child_attach, when the attach command was |
182 | given a pid but not a exec pathname, and the attach command could | |
183 | figure out the pathname from the pid. (In this case, we shouldn't | |
184 | ask the user whether the current target should be shut down -- | |
907083d1 | 185 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
186 | |
187 | void | |
1adeb98a | 188 | exec_file_attach (char *filename, int from_tty) |
c906108c | 189 | { |
c906108c | 190 | /* Remove any previous exec file. */ |
6c95b8df | 191 | exec_close (); |
c906108c SS |
192 | |
193 | /* Now open and digest the file the user requested, if any. */ | |
194 | ||
1adeb98a FN |
195 | if (!filename) |
196 | { | |
197 | if (from_tty) | |
a3f17187 | 198 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
199 | |
200 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
201 | } |
202 | else | |
c906108c | 203 | { |
f7545552 | 204 | struct cleanup *cleanups; |
c906108c SS |
205 | char *scratch_pathname; |
206 | int scratch_chan; | |
07b82ea5 | 207 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 208 | char **matching; |
c5aa993b | 209 | |
014d698b | 210 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
fbdebf46 | 211 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
c906108c | 212 | &scratch_pathname); |
cfc3008e | 213 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 214 | if (scratch_chan < 0) |
c5aa993b JM |
215 | { |
216 | char *exename = alloca (strlen (filename) + 5); | |
d7f9d729 | 217 | |
c5aa993b | 218 | strcat (strcpy (exename, filename), ".exe"); |
014d698b | 219 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 220 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
014d698b | 221 | &scratch_pathname); |
c5aa993b | 222 | } |
c906108c | 223 | #endif |
17d6efc4 JB |
224 | if (scratch_chan < 0) |
225 | perror_with_name (filename); | |
a4453b7e TT |
226 | |
227 | cleanups = make_cleanup (xfree, scratch_pathname); | |
228 | ||
1c00ec6b TT |
229 | if (write_files) |
230 | exec_bfd = gdb_bfd_fopen (scratch_pathname, gnutarget, | |
231 | FOPEN_RUB, scratch_chan); | |
232 | else | |
233 | exec_bfd = gdb_bfd_open (scratch_pathname, gnutarget, scratch_chan); | |
c906108c SS |
234 | |
235 | if (!exec_bfd) | |
9fe4a216 | 236 | { |
9fe4a216 TT |
237 | error (_("\"%s\": could not open as an executable file: %s"), |
238 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
239 | } | |
c906108c | 240 | |
d18b8b7a | 241 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
242 | { |
243 | /* Make sure to close exec_bfd, or else "run" might try to use | |
244 | it. */ | |
6c95b8df | 245 | exec_close (); |
8a3fe4f8 | 246 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
247 | scratch_pathname, |
248 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
249 | } |
250 | ||
251 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 252 | way to accomplish. */ |
52d16ba8 | 253 | #ifdef DEPRECATED_IBM6000_TARGET |
0963b4bd | 254 | /* Setup initial vmap. */ |
c906108c SS |
255 | |
256 | map_vmap (exec_bfd, 0); | |
257 | if (vmap == NULL) | |
258 | { | |
259 | /* Make sure to close exec_bfd, or else "run" might try to use | |
260 | it. */ | |
6c95b8df | 261 | exec_close (); |
8a3fe4f8 | 262 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
263 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
264 | } | |
52d16ba8 | 265 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c | 266 | |
07b82ea5 | 267 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
268 | { |
269 | /* Make sure to close exec_bfd, or else "run" might try to use | |
270 | it. */ | |
6c95b8df | 271 | exec_close (); |
8a3fe4f8 | 272 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
273 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
274 | } | |
275 | ||
c04ea773 DJ |
276 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
277 | ||
c906108c SS |
278 | validate_files (); |
279 | ||
280 | set_gdbarch_from_file (exec_bfd); | |
281 | ||
07b82ea5 | 282 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
283 | list of sections. This possibly pushes the exec_ops |
284 | target. */ | |
ed9eebaf | 285 | add_target_sections (&exec_bfd, sections, sections_end); |
07b82ea5 | 286 | xfree (sections); |
c906108c SS |
287 | |
288 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
289 | if (deprecated_exec_file_display_hook) |
290 | (*deprecated_exec_file_display_hook) (filename); | |
f7545552 TT |
291 | |
292 | do_cleanups (cleanups); | |
c906108c | 293 | } |
ce7d4522 | 294 | bfd_cache_close_all (); |
781b42b0 | 295 | observer_notify_executable_changed (); |
c906108c SS |
296 | } |
297 | ||
298 | /* Process the first arg in ARGS as the new exec file. | |
299 | ||
c5aa993b JM |
300 | Note that we have to explicitly ignore additional args, since we can |
301 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
302 | which can take multiple args. |
303 | ||
0963b4bd | 304 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 305 | |
1adeb98a | 306 | static void |
fba45db2 | 307 | exec_file_command (char *args, int from_tty) |
c906108c | 308 | { |
1adeb98a FN |
309 | char **argv; |
310 | char *filename; | |
4c42eaff DJ |
311 | |
312 | if (from_tty && target_has_execution | |
313 | && !query (_("A program is being debugged already.\n" | |
314 | "Are you sure you want to change the file? "))) | |
315 | error (_("File not changed.")); | |
1adeb98a FN |
316 | |
317 | if (args) | |
318 | { | |
f7545552 TT |
319 | struct cleanup *cleanups; |
320 | ||
1adeb98a FN |
321 | /* Scan through the args and pick up the first non option arg |
322 | as the filename. */ | |
323 | ||
d1a41061 | 324 | argv = gdb_buildargv (args); |
f7545552 | 325 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
326 | |
327 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
328 | {; | |
329 | } | |
330 | if (*argv == NULL) | |
8a3fe4f8 | 331 | error (_("No executable file name was specified")); |
1adeb98a FN |
332 | |
333 | filename = tilde_expand (*argv); | |
334 | make_cleanup (xfree, filename); | |
335 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
336 | |
337 | do_cleanups (cleanups); | |
1adeb98a FN |
338 | } |
339 | else | |
340 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
341 | } |
342 | ||
0963b4bd | 343 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
344 | What a novelty. Why did GDB go through four major releases before this |
345 | command was added? */ | |
346 | ||
347 | static void | |
fba45db2 | 348 | file_command (char *arg, int from_tty) |
c906108c SS |
349 | { |
350 | /* FIXME, if we lose on reading the symbol file, we should revert | |
351 | the exec file, but that's rough. */ | |
352 | exec_file_command (arg, from_tty); | |
353 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
354 | if (deprecated_file_changed_hook) |
355 | deprecated_file_changed_hook (arg); | |
c906108c | 356 | } |
c906108c | 357 | \f |
c5aa993b | 358 | |
0963b4bd | 359 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
360 | table_pp_char is a char * to get it through bfd_map_over_sections; |
361 | we cast it back to its proper type. */ | |
362 | ||
363 | static void | |
7be0c536 AC |
364 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
365 | void *table_pp_char) | |
c906108c | 366 | { |
0542c86d | 367 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
368 | flagword aflag; |
369 | ||
0f5d55d8 JB |
370 | /* Check the section flags, but do not discard zero-length sections, since |
371 | some symbols may still be attached to this section. For instance, we | |
372 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
373 | section to which a symbol named "_end" was attached. The address | |
374 | of this symbol still needs to be relocated. */ | |
c906108c SS |
375 | aflag = bfd_get_section_flags (abfd, asect); |
376 | if (!(aflag & SEC_ALLOC)) | |
377 | return; | |
0f5d55d8 | 378 | |
ed9eebaf | 379 | (*table_pp)->key = NULL; |
c906108c SS |
380 | (*table_pp)->bfd = abfd; |
381 | (*table_pp)->the_bfd_section = asect; | |
382 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
383 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
384 | (*table_pp)++; | |
385 | } | |
386 | ||
07b82ea5 PA |
387 | int |
388 | resize_section_table (struct target_section_table *table, int num_added) | |
389 | { | |
07b82ea5 PA |
390 | int old_count; |
391 | int new_count; | |
392 | ||
07b82ea5 PA |
393 | old_count = table->sections_end - table->sections; |
394 | ||
395 | new_count = num_added + old_count; | |
396 | ||
397 | if (new_count) | |
398 | { | |
399 | table->sections = xrealloc (table->sections, | |
400 | sizeof (struct target_section) * new_count); | |
401 | table->sections_end = table->sections + new_count; | |
402 | } | |
403 | else | |
404 | { | |
405 | xfree (table->sections); | |
406 | table->sections = table->sections_end = NULL; | |
407 | } | |
408 | ||
409 | return old_count; | |
410 | } | |
411 | ||
c906108c SS |
412 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
413 | Returns 0 if OK, 1 on error. */ | |
414 | ||
415 | int | |
0542c86d PA |
416 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
417 | struct target_section **end) | |
c906108c SS |
418 | { |
419 | unsigned count; | |
420 | ||
421 | count = bfd_count_sections (some_bfd); | |
422 | if (*start) | |
b8c9b27d | 423 | xfree (* start); |
0542c86d | 424 | *start = (struct target_section *) xmalloc (count * sizeof (**start)); |
c906108c | 425 | *end = *start; |
c5aa993b | 426 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 427 | if (*end > *start + count) |
3e43a32a MS |
428 | internal_error (__FILE__, __LINE__, |
429 | _("failed internal consistency check")); | |
c906108c SS |
430 | /* We could realloc the table, but it probably loses for most files. */ |
431 | return 0; | |
432 | } | |
07b82ea5 PA |
433 | |
434 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
435 | current set of target sections. */ | |
436 | ||
437 | void | |
ed9eebaf TT |
438 | add_target_sections (void *key, |
439 | struct target_section *sections, | |
07b82ea5 PA |
440 | struct target_section *sections_end) |
441 | { | |
442 | int count; | |
443 | struct target_section_table *table = current_target_sections; | |
444 | ||
445 | count = sections_end - sections; | |
446 | ||
447 | if (count > 0) | |
448 | { | |
449 | int space = resize_section_table (table, count); | |
ed9eebaf | 450 | int i; |
d7f9d729 | 451 | |
ed9eebaf TT |
452 | for (i = 0; i < count; ++i) |
453 | { | |
454 | table->sections[space + i] = sections[i]; | |
455 | table->sections[space + i].key = key; | |
456 | } | |
07b82ea5 PA |
457 | |
458 | /* If these are the first file sections we can provide memory | |
459 | from, push the file_stratum target. */ | |
6c95b8df PA |
460 | if (!using_exec_ops) |
461 | { | |
462 | using_exec_ops = 1; | |
463 | push_target (&exec_ops); | |
464 | } | |
07b82ea5 PA |
465 | } |
466 | } | |
467 | ||
468 | /* Remove all target sections taken from ABFD. */ | |
469 | ||
470 | void | |
ed9eebaf | 471 | remove_target_sections (void *key, bfd *abfd) |
07b82ea5 PA |
472 | { |
473 | struct target_section *src, *dest; | |
07b82ea5 PA |
474 | struct target_section_table *table = current_target_sections; |
475 | ||
476 | dest = table->sections; | |
477 | for (src = table->sections; src < table->sections_end; src++) | |
ed9eebaf | 478 | if (src->key != key || src->bfd != abfd) |
07b82ea5 PA |
479 | { |
480 | /* Keep this section. */ | |
481 | if (dest < src) | |
482 | *dest = *src; | |
483 | dest++; | |
484 | } | |
485 | ||
486 | /* If we've dropped any sections, resize the section table. */ | |
487 | if (dest < src) | |
488 | { | |
489 | int old_count; | |
490 | ||
491 | old_count = resize_section_table (table, dest - src); | |
492 | ||
493 | /* If we don't have any more sections to read memory from, | |
494 | remove the file_stratum target from the stack. */ | |
495 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
496 | { |
497 | struct program_space *pspace; | |
498 | ||
499 | ALL_PSPACES (pspace) | |
500 | if (pspace->target_sections.sections | |
501 | != pspace->target_sections.sections_end) | |
502 | return; | |
503 | ||
504 | unpush_target (&exec_ops); | |
505 | } | |
07b82ea5 PA |
506 | } |
507 | } | |
508 | ||
c906108c SS |
509 | \f |
510 | static void | |
7be0c536 | 511 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
512 | { |
513 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
514 | struct vmap *vp; | |
515 | ||
516 | vp = vmap_bfd->pvmap; | |
517 | ||
518 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
519 | return; | |
520 | ||
dc6a2ca4 | 521 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
522 | { |
523 | vp->tstart = bfd_section_vma (abfd, sect); | |
524 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
525 | vp->tvma = bfd_section_vma (abfd, sect); | |
526 | vp->toffs = sect->filepos; | |
527 | } | |
dc6a2ca4 | 528 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
529 | { |
530 | vp->dstart = bfd_section_vma (abfd, sect); | |
531 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
532 | vp->dvma = bfd_section_vma (abfd, sect); | |
533 | } | |
0963b4bd | 534 | /* Silently ignore other types of sections. (FIXME?) */ |
c906108c SS |
535 | } |
536 | ||
537 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
538 | Return the new vmap. */ | |
539 | ||
540 | struct vmap * | |
fba45db2 | 541 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
542 | { |
543 | struct vmap_and_bfd vmap_bfd; | |
544 | struct vmap *vp, **vpp; | |
545 | ||
546 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
547 | memset ((char *) vp, '\0', sizeof (*vp)); | |
548 | vp->nxt = 0; | |
549 | vp->bfd = abfd; | |
da1cc82f | 550 | gdb_bfd_ref (abfd); |
c906108c SS |
551 | vp->name = bfd_get_filename (arch ? arch : abfd); |
552 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 553 | |
c906108c SS |
554 | vmap_bfd.pbfd = arch; |
555 | vmap_bfd.pvmap = vp; | |
556 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
557 | ||
0963b4bd | 558 | /* Find the end of the list and append. */ |
c906108c SS |
559 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) |
560 | ; | |
561 | *vpp = vp; | |
562 | ||
563 | return vp; | |
564 | } | |
565 | \f | |
348f8c02 | 566 | |
e6ca34fc PA |
567 | VEC(mem_range_s) * |
568 | section_table_available_memory (VEC(mem_range_s) *memory, | |
424447ee | 569 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
570 | struct target_section *sections, |
571 | struct target_section *sections_end) | |
572 | { | |
573 | struct target_section *p; | |
e6ca34fc PA |
574 | |
575 | for (p = sections; p < sections_end; p++) | |
576 | { | |
577 | if ((bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
578 | & SEC_READONLY) == 0) | |
579 | continue; | |
580 | ||
581 | /* Copy the meta-data, adjusted. */ | |
582 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
583 | { | |
584 | ULONGEST lo1, hi1, lo2, hi2; | |
585 | struct mem_range *r; | |
586 | ||
587 | lo1 = memaddr; | |
588 | hi1 = memaddr + len; | |
589 | ||
590 | lo2 = p->addr; | |
591 | hi2 = p->endaddr; | |
592 | ||
593 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
594 | ||
595 | r->start = max (lo1, lo2); | |
596 | r->length = min (hi1, hi2) - r->start; | |
597 | } | |
598 | } | |
599 | ||
600 | return memory; | |
601 | } | |
602 | ||
07b82ea5 PA |
603 | int |
604 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, | |
605 | ULONGEST offset, LONGEST len, | |
606 | struct target_section *sections, | |
607 | struct target_section *sections_end, | |
608 | const char *section_name) | |
c906108c | 609 | { |
020cc13c | 610 | int res; |
0542c86d | 611 | struct target_section *p; |
07b82ea5 PA |
612 | ULONGEST memaddr = offset; |
613 | ULONGEST memend = memaddr + len; | |
c906108c SS |
614 | |
615 | if (len <= 0) | |
3e43a32a MS |
616 | internal_error (__FILE__, __LINE__, |
617 | _("failed internal consistency check")); | |
c906108c | 618 | |
348f8c02 | 619 | for (p = sections; p < sections_end; p++) |
c906108c | 620 | { |
348f8c02 | 621 | if (section_name && strcmp (section_name, p->the_bfd_section->name) != 0) |
0963b4bd | 622 | continue; /* not the section we need. */ |
c906108c | 623 | if (memaddr >= p->addr) |
3db26b01 JB |
624 | { |
625 | if (memend <= p->endaddr) | |
626 | { | |
627 | /* Entire transfer is within this section. */ | |
07b82ea5 | 628 | if (writebuf) |
85302095 | 629 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 630 | writebuf, memaddr - p->addr, |
85302095 AC |
631 | len); |
632 | else | |
633 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 634 | readbuf, memaddr - p->addr, |
85302095 | 635 | len); |
3db26b01 JB |
636 | return (res != 0) ? len : 0; |
637 | } | |
638 | else if (memaddr >= p->endaddr) | |
639 | { | |
640 | /* This section ends before the transfer starts. */ | |
641 | continue; | |
642 | } | |
643 | else | |
644 | { | |
645 | /* This section overlaps the transfer. Just do half. */ | |
646 | len = p->endaddr - memaddr; | |
07b82ea5 | 647 | if (writebuf) |
85302095 | 648 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 649 | writebuf, memaddr - p->addr, |
85302095 AC |
650 | len); |
651 | else | |
652 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 653 | readbuf, memaddr - p->addr, |
85302095 | 654 | len); |
3db26b01 JB |
655 | return (res != 0) ? len : 0; |
656 | } | |
657 | } | |
c906108c SS |
658 | } |
659 | ||
0963b4bd | 660 | return 0; /* We can't help. */ |
c906108c | 661 | } |
348f8c02 | 662 | |
70221824 | 663 | static struct target_section_table * |
07b82ea5 | 664 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 665 | { |
07b82ea5 | 666 | return current_target_sections; |
348f8c02 PA |
667 | } |
668 | ||
07b82ea5 PA |
669 | static LONGEST |
670 | exec_xfer_partial (struct target_ops *ops, enum target_object object, | |
671 | const char *annex, gdb_byte *readbuf, | |
672 | const gdb_byte *writebuf, | |
673 | ULONGEST offset, LONGEST len) | |
348f8c02 | 674 | { |
07b82ea5 PA |
675 | struct target_section_table *table = target_get_section_table (ops); |
676 | ||
677 | if (object == TARGET_OBJECT_MEMORY) | |
678 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
679 | offset, len, | |
680 | table->sections, | |
681 | table->sections_end, | |
682 | NULL); | |
683 | else | |
684 | return -1; | |
348f8c02 | 685 | } |
c906108c | 686 | \f |
c5aa993b | 687 | |
c906108c | 688 | void |
07b82ea5 | 689 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 690 | { |
5af949e3 | 691 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 692 | struct target_section *p; |
17a912b6 | 693 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 694 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 695 | |
c5aa993b | 696 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 697 | wrap_here (" "); |
a3f17187 | 698 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 699 | if (abfd == exec_bfd) |
51bee8e9 | 700 | { |
3e43a32a MS |
701 | /* gcc-3.4 does not like the initialization in |
702 | <p == t->sections_end>. */ | |
d904de5b | 703 | bfd_vma displacement = 0; |
2f1bdd26 | 704 | bfd_vma entry_point; |
51bee8e9 JK |
705 | |
706 | for (p = t->sections; p < t->sections_end; p++) | |
707 | { | |
708 | asection *asect = p->the_bfd_section; | |
709 | ||
710 | if ((bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD)) | |
711 | != (SEC_ALLOC | SEC_LOAD)) | |
712 | continue; | |
713 | ||
714 | if (bfd_get_section_vma (abfd, asect) <= abfd->start_address | |
715 | && abfd->start_address < (bfd_get_section_vma (abfd, asect) | |
716 | + bfd_get_section_size (asect))) | |
717 | { | |
718 | displacement = p->addr - bfd_get_section_vma (abfd, asect); | |
719 | break; | |
720 | } | |
721 | } | |
722 | if (p == t->sections_end) | |
b37520b6 | 723 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 724 | bfd_get_filename (abfd)); |
51bee8e9 | 725 | |
2f1bdd26 MGD |
726 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
727 | bfd_get_start_address (abfd) | |
728 | + displacement); | |
51bee8e9 | 729 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 730 | paddress (gdbarch, entry_point)); |
51bee8e9 | 731 | } |
07b82ea5 | 732 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 733 | { |
bb599908 PH |
734 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
735 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
736 | |
737 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
738 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
739 | since most output will then be much wider than necessary. It | |
740 | may make sense to test the size of the file and choose the | |
741 | format string accordingly. */ | |
a3f17187 | 742 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
743 | if (info_verbose) |
744 | printf_filtered (" @ %s", | |
bb599908 | 745 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
3e43a32a MS |
746 | printf_filtered (" is %s", bfd_section_name (p->bfd, |
747 | p->the_bfd_section)); | |
c906108c | 748 | if (p->bfd != abfd) |
a3f17187 | 749 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
750 | printf_filtered ("\n"); |
751 | } | |
752 | } | |
753 | ||
754 | static void | |
fba45db2 | 755 | exec_files_info (struct target_ops *t) |
c906108c | 756 | { |
57008375 JK |
757 | if (exec_bfd) |
758 | print_section_info (current_target_sections, exec_bfd); | |
759 | else | |
760 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
761 | |
762 | if (vmap) | |
763 | { | |
f5656ead | 764 | int addr_size = gdbarch_addr_bit (target_gdbarch ()) / 8; |
c906108c SS |
765 | struct vmap *vp; |
766 | ||
a3f17187 | 767 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e | 768 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
5af949e3 UW |
769 | addr_size * 2, "tstart", |
770 | addr_size * 2, "tend", | |
771 | addr_size * 2, "dstart", | |
772 | addr_size * 2, "dend", | |
d4f3574e | 773 | "section", |
c5aa993b JM |
774 | "file(member)"); |
775 | ||
776 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e | 777 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
5af949e3 UW |
778 | phex (vp->tstart, addr_size), |
779 | phex (vp->tend, addr_size), | |
780 | phex (vp->dstart, addr_size), | |
781 | phex (vp->dend, addr_size), | |
d4f3574e | 782 | vp->name, |
c5aa993b JM |
783 | *vp->member ? "(" : "", vp->member, |
784 | *vp->member ? ")" : ""); | |
c906108c SS |
785 | } |
786 | } | |
787 | ||
788 | static void | |
fba45db2 | 789 | set_section_command (char *args, int from_tty) |
c906108c | 790 | { |
0542c86d | 791 | struct target_section *p; |
c906108c SS |
792 | char *secname; |
793 | unsigned seclen; | |
794 | unsigned long secaddr; | |
795 | char secprint[100]; | |
796 | long offset; | |
07b82ea5 | 797 | struct target_section_table *table; |
c906108c SS |
798 | |
799 | if (args == 0) | |
8a3fe4f8 | 800 | error (_("Must specify section name and its virtual address")); |
c906108c | 801 | |
0963b4bd | 802 | /* Parse out section name. */ |
c5aa993b | 803 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
804 | seclen = args - secname; |
805 | ||
0963b4bd | 806 | /* Parse out new virtual address. */ |
c906108c SS |
807 | secaddr = parse_and_eval_address (args); |
808 | ||
07b82ea5 PA |
809 | table = current_target_sections; |
810 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 811 | { |
57008375 | 812 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 813 | p->the_bfd_section), seclen) |
57008375 | 814 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
815 | { |
816 | offset = secaddr - p->addr; | |
817 | p->addr += offset; | |
818 | p->endaddr += offset; | |
819 | if (from_tty) | |
820 | exec_files_info (&exec_ops); | |
821 | return; | |
822 | } | |
c906108c | 823 | } |
c906108c SS |
824 | if (seclen >= sizeof (secprint)) |
825 | seclen = sizeof (secprint) - 1; | |
826 | strncpy (secprint, secname, seclen); | |
827 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 828 | error (_("Section %s not found"), secprint); |
c906108c SS |
829 | } |
830 | ||
30510692 DJ |
831 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
832 | it to ADDRESS. */ | |
c1bd25fd DJ |
833 | |
834 | void | |
835 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
836 | { | |
0542c86d | 837 | struct target_section *p; |
07b82ea5 | 838 | struct target_section_table *table; |
c1bd25fd | 839 | |
07b82ea5 PA |
840 | table = current_target_sections; |
841 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 842 | { |
0ba1096a | 843 | if (filename_cmp (filename, p->bfd->filename) == 0 |
30510692 | 844 | && index == p->the_bfd_section->index) |
c1bd25fd | 845 | { |
30510692 | 846 | p->endaddr += address - p->addr; |
c1bd25fd | 847 | p->addr = address; |
c1bd25fd DJ |
848 | } |
849 | } | |
850 | } | |
851 | ||
c906108c SS |
852 | /* If mourn is being called in all the right places, this could be say |
853 | `gdb internal error' (since generic_mourn calls | |
854 | breakpoint_init_inferior). */ | |
855 | ||
856 | static int | |
a6d9a66e | 857 | ignore (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt) |
c906108c SS |
858 | { |
859 | return 0; | |
860 | } | |
861 | ||
c35b1492 PA |
862 | static int |
863 | exec_has_memory (struct target_ops *ops) | |
864 | { | |
865 | /* We can provide memory if we have any file/target sections to read | |
866 | from. */ | |
867 | return (current_target_sections->sections | |
868 | != current_target_sections->sections_end); | |
869 | } | |
870 | ||
0963b4bd | 871 | /* Find mapped memory. */ |
be4d1333 MS |
872 | |
873 | extern void | |
b8edc417 | 874 | exec_set_find_memory_regions (int (*func) (find_memory_region_ftype, void *)) |
be4d1333 MS |
875 | { |
876 | exec_ops.to_find_memory_regions = func; | |
877 | } | |
878 | ||
879 | static char *exec_make_note_section (bfd *, int *); | |
880 | ||
c906108c SS |
881 | /* Fill in the exec file target vector. Very few entries need to be |
882 | defined. */ | |
883 | ||
be4d1333 | 884 | static void |
fba45db2 | 885 | init_exec_ops (void) |
c906108c SS |
886 | { |
887 | exec_ops.to_shortname = "exec"; | |
888 | exec_ops.to_longname = "Local exec file"; | |
889 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
890 | Specify the filename of the executable file."; | |
1adeb98a | 891 | exec_ops.to_open = exec_open; |
6c95b8df | 892 | exec_ops.to_close = exec_close_1; |
c906108c | 893 | exec_ops.to_attach = find_default_attach; |
07b82ea5 PA |
894 | exec_ops.to_xfer_partial = exec_xfer_partial; |
895 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
896 | exec_ops.to_files_info = exec_files_info; |
897 | exec_ops.to_insert_breakpoint = ignore; | |
898 | exec_ops.to_remove_breakpoint = ignore; | |
899 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c | 900 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 901 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 902 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 903 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
904 | } |
905 | ||
906 | void | |
fba45db2 | 907 | _initialize_exec (void) |
c906108c SS |
908 | { |
909 | struct cmd_list_element *c; | |
910 | ||
911 | init_exec_ops (); | |
912 | ||
913 | if (!dbx_commands) | |
914 | { | |
1a966eab AC |
915 | c = add_cmd ("file", class_files, file_command, _("\ |
916 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
917 | It is read for its symbols, for getting the contents of pure memory,\n\ |
918 | and it is the program executed when you use the `run' command.\n\ | |
919 | If FILE cannot be found as specified, your execution directory path\n\ | |
920 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 921 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 922 | set_cmd_completer (c, filename_completer); |
c906108c SS |
923 | } |
924 | ||
1a966eab AC |
925 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
926 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
927 | If FILE cannot be found as specified, your execution directory path\n\ |
928 | is searched for a command of that name.\n\ | |
1a966eab | 929 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 930 | set_cmd_completer (c, filename_completer); |
c906108c | 931 | |
1bedd215 AC |
932 | add_com ("section", class_files, set_section_command, _("\ |
933 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
934 | This can be used if the exec file does not contain section addresses,\n\ |
935 | (such as in the a.out format), or when the addresses specified in the\n\ | |
936 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 937 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 938 | |
5bf193a2 AC |
939 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
940 | Set writing into executable and core files."), _("\ | |
941 | Show writing into executable and core files."), NULL, | |
942 | NULL, | |
920d2a44 | 943 | show_write_files, |
5bf193a2 | 944 | &setlist, &showlist); |
c5aa993b | 945 | |
c906108c SS |
946 | add_target (&exec_ops); |
947 | } | |
be4d1333 MS |
948 | |
949 | static char * | |
950 | exec_make_note_section (bfd *obfd, int *note_size) | |
951 | { | |
8a3fe4f8 | 952 | error (_("Can't create a corefile")); |
be4d1333 | 953 | } |