Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
0b302171 | 3 | Copyright (C) 1988-2003, 2007-2012 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 | ||
110 | remove_target_sections (abfd); | |
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 |
6c95b8df | 118 | exec_close_1 (int quitting) |
c906108c SS |
119 | { |
120 | int need_symtab_cleanup = 0; | |
121 | struct vmap *vp, *nxt; | |
c5aa993b | 122 | |
6c95b8df PA |
123 | using_exec_ops = 0; |
124 | ||
c5aa993b | 125 | for (nxt = vmap; nxt != NULL;) |
c906108c SS |
126 | { |
127 | vp = nxt; | |
128 | nxt = vp->nxt; | |
129 | ||
130 | /* if there is an objfile associated with this bfd, | |
0963b4bd | 131 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
c5aa993b | 132 | |
c906108c SS |
133 | if (vp->objfile) |
134 | { | |
135 | free_objfile (vp->objfile); | |
136 | need_symtab_cleanup = 1; | |
137 | } | |
138 | else if (vp->bfd != exec_bfd) | |
cbb099e8 | 139 | gdb_bfd_unref (vp->bfd); |
c906108c | 140 | |
b8c9b27d | 141 | xfree (vp); |
c906108c SS |
142 | } |
143 | ||
144 | vmap = NULL; | |
145 | ||
6c95b8df PA |
146 | { |
147 | struct program_space *ss; | |
148 | struct cleanup *old_chain; | |
c906108c | 149 | |
6c95b8df PA |
150 | old_chain = save_current_program_space (); |
151 | ALL_PSPACES (ss) | |
152 | { | |
153 | set_current_program_space (ss); | |
154 | ||
155 | /* Delete all target sections. */ | |
156 | resize_section_table | |
157 | (current_target_sections, | |
158 | -resize_section_table (current_target_sections, 0)); | |
159 | ||
160 | exec_close (); | |
161 | } | |
162 | ||
163 | do_cleanups (old_chain); | |
164 | } | |
c906108c SS |
165 | } |
166 | ||
1adeb98a FN |
167 | void |
168 | exec_file_clear (int from_tty) | |
169 | { | |
170 | /* Remove exec file. */ | |
6c95b8df | 171 | exec_close (); |
1adeb98a FN |
172 | |
173 | if (from_tty) | |
a3f17187 | 174 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
175 | } |
176 | ||
907083d1 | 177 | /* Set FILENAME as the new exec file. |
c906108c | 178 | |
c5aa993b JM |
179 | This function is intended to be behave essentially the same |
180 | as exec_file_command, except that the latter will detect when | |
181 | a target is being debugged, and will ask the user whether it | |
182 | should be shut down first. (If the answer is "no", then the | |
183 | new file is ignored.) | |
c906108c | 184 | |
c5aa993b JM |
185 | This file is used by exec_file_command, to do the work of opening |
186 | and processing the exec file after any prompting has happened. | |
c906108c | 187 | |
c5aa993b JM |
188 | And, it is used by child_attach, when the attach command was |
189 | given a pid but not a exec pathname, and the attach command could | |
190 | figure out the pathname from the pid. (In this case, we shouldn't | |
191 | ask the user whether the current target should be shut down -- | |
907083d1 | 192 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
193 | |
194 | void | |
1adeb98a | 195 | exec_file_attach (char *filename, int from_tty) |
c906108c | 196 | { |
c906108c | 197 | /* Remove any previous exec file. */ |
6c95b8df | 198 | exec_close (); |
c906108c SS |
199 | |
200 | /* Now open and digest the file the user requested, if any. */ | |
201 | ||
1adeb98a FN |
202 | if (!filename) |
203 | { | |
204 | if (from_tty) | |
a3f17187 | 205 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
206 | |
207 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
208 | } |
209 | else | |
c906108c | 210 | { |
f7545552 | 211 | struct cleanup *cleanups; |
c906108c SS |
212 | char *scratch_pathname; |
213 | int scratch_chan; | |
07b82ea5 | 214 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 215 | char **matching; |
c5aa993b | 216 | |
014d698b | 217 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
fbdebf46 | 218 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
c906108c | 219 | &scratch_pathname); |
cfc3008e | 220 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 221 | if (scratch_chan < 0) |
c5aa993b JM |
222 | { |
223 | char *exename = alloca (strlen (filename) + 5); | |
d7f9d729 | 224 | |
c5aa993b | 225 | strcat (strcpy (exename, filename), ".exe"); |
014d698b | 226 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 227 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
014d698b | 228 | &scratch_pathname); |
c5aa993b | 229 | } |
c906108c | 230 | #endif |
a4453b7e TT |
231 | |
232 | cleanups = make_cleanup (xfree, scratch_pathname); | |
233 | ||
c906108c SS |
234 | if (scratch_chan < 0) |
235 | perror_with_name (filename); | |
520b0001 TT |
236 | exec_bfd = bfd_fopen (scratch_pathname, gnutarget, |
237 | write_files ? FOPEN_RUB : FOPEN_RB, | |
238 | scratch_chan); | |
239 | gdb_bfd_ref (exec_bfd); | |
c906108c SS |
240 | |
241 | if (!exec_bfd) | |
9fe4a216 | 242 | { |
9fe4a216 TT |
243 | error (_("\"%s\": could not open as an executable file: %s"), |
244 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
245 | } | |
c906108c | 246 | |
d18b8b7a | 247 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
248 | { |
249 | /* Make sure to close exec_bfd, or else "run" might try to use | |
250 | it. */ | |
6c95b8df | 251 | exec_close (); |
8a3fe4f8 | 252 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
253 | scratch_pathname, |
254 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
255 | } |
256 | ||
a4453b7e TT |
257 | gdb_bfd_stash_filename (exec_bfd); |
258 | ||
c906108c | 259 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor |
c5aa993b | 260 | way to accomplish. */ |
52d16ba8 | 261 | #ifdef DEPRECATED_IBM6000_TARGET |
0963b4bd | 262 | /* Setup initial vmap. */ |
c906108c SS |
263 | |
264 | map_vmap (exec_bfd, 0); | |
265 | if (vmap == NULL) | |
266 | { | |
267 | /* Make sure to close exec_bfd, or else "run" might try to use | |
268 | it. */ | |
6c95b8df | 269 | exec_close (); |
8a3fe4f8 | 270 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
271 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
272 | } | |
52d16ba8 | 273 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c | 274 | |
07b82ea5 | 275 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
276 | { |
277 | /* Make sure to close exec_bfd, or else "run" might try to use | |
278 | it. */ | |
6c95b8df | 279 | exec_close (); |
8a3fe4f8 | 280 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
281 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
282 | } | |
283 | ||
c04ea773 DJ |
284 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
285 | ||
c906108c SS |
286 | validate_files (); |
287 | ||
288 | set_gdbarch_from_file (exec_bfd); | |
289 | ||
07b82ea5 | 290 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
291 | list of sections. This possibly pushes the exec_ops |
292 | target. */ | |
07b82ea5 PA |
293 | add_target_sections (sections, sections_end); |
294 | xfree (sections); | |
c906108c SS |
295 | |
296 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
297 | if (deprecated_exec_file_display_hook) |
298 | (*deprecated_exec_file_display_hook) (filename); | |
f7545552 TT |
299 | |
300 | do_cleanups (cleanups); | |
c906108c | 301 | } |
ce7d4522 | 302 | bfd_cache_close_all (); |
781b42b0 | 303 | observer_notify_executable_changed (); |
c906108c SS |
304 | } |
305 | ||
306 | /* Process the first arg in ARGS as the new exec file. | |
307 | ||
c5aa993b JM |
308 | Note that we have to explicitly ignore additional args, since we can |
309 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
310 | which can take multiple args. |
311 | ||
0963b4bd | 312 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 313 | |
1adeb98a | 314 | static void |
fba45db2 | 315 | exec_file_command (char *args, int from_tty) |
c906108c | 316 | { |
1adeb98a FN |
317 | char **argv; |
318 | char *filename; | |
4c42eaff DJ |
319 | |
320 | if (from_tty && target_has_execution | |
321 | && !query (_("A program is being debugged already.\n" | |
322 | "Are you sure you want to change the file? "))) | |
323 | error (_("File not changed.")); | |
1adeb98a FN |
324 | |
325 | if (args) | |
326 | { | |
f7545552 TT |
327 | struct cleanup *cleanups; |
328 | ||
1adeb98a FN |
329 | /* Scan through the args and pick up the first non option arg |
330 | as the filename. */ | |
331 | ||
d1a41061 | 332 | argv = gdb_buildargv (args); |
f7545552 | 333 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
334 | |
335 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
336 | {; | |
337 | } | |
338 | if (*argv == NULL) | |
8a3fe4f8 | 339 | error (_("No executable file name was specified")); |
1adeb98a FN |
340 | |
341 | filename = tilde_expand (*argv); | |
342 | make_cleanup (xfree, filename); | |
343 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
344 | |
345 | do_cleanups (cleanups); | |
1adeb98a FN |
346 | } |
347 | else | |
348 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
349 | } |
350 | ||
0963b4bd | 351 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
352 | What a novelty. Why did GDB go through four major releases before this |
353 | command was added? */ | |
354 | ||
355 | static void | |
fba45db2 | 356 | file_command (char *arg, int from_tty) |
c906108c SS |
357 | { |
358 | /* FIXME, if we lose on reading the symbol file, we should revert | |
359 | the exec file, but that's rough. */ | |
360 | exec_file_command (arg, from_tty); | |
361 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
362 | if (deprecated_file_changed_hook) |
363 | deprecated_file_changed_hook (arg); | |
c906108c | 364 | } |
c906108c | 365 | \f |
c5aa993b | 366 | |
0963b4bd | 367 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
368 | table_pp_char is a char * to get it through bfd_map_over_sections; |
369 | we cast it back to its proper type. */ | |
370 | ||
371 | static void | |
7be0c536 AC |
372 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
373 | void *table_pp_char) | |
c906108c | 374 | { |
0542c86d | 375 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
376 | flagword aflag; |
377 | ||
0f5d55d8 JB |
378 | /* Check the section flags, but do not discard zero-length sections, since |
379 | some symbols may still be attached to this section. For instance, we | |
380 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
381 | section to which a symbol named "_end" was attached. The address | |
382 | of this symbol still needs to be relocated. */ | |
c906108c SS |
383 | aflag = bfd_get_section_flags (abfd, asect); |
384 | if (!(aflag & SEC_ALLOC)) | |
385 | return; | |
0f5d55d8 | 386 | |
c906108c SS |
387 | (*table_pp)->bfd = abfd; |
388 | (*table_pp)->the_bfd_section = asect; | |
389 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
390 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
391 | (*table_pp)++; | |
392 | } | |
393 | ||
07b82ea5 PA |
394 | int |
395 | resize_section_table (struct target_section_table *table, int num_added) | |
396 | { | |
397 | struct target_section *old_value; | |
398 | int old_count; | |
399 | int new_count; | |
400 | ||
401 | old_value = table->sections; | |
402 | old_count = table->sections_end - table->sections; | |
403 | ||
404 | new_count = num_added + old_count; | |
405 | ||
406 | if (new_count) | |
407 | { | |
408 | table->sections = xrealloc (table->sections, | |
409 | sizeof (struct target_section) * new_count); | |
410 | table->sections_end = table->sections + new_count; | |
411 | } | |
412 | else | |
413 | { | |
414 | xfree (table->sections); | |
415 | table->sections = table->sections_end = NULL; | |
416 | } | |
417 | ||
418 | return old_count; | |
419 | } | |
420 | ||
c906108c SS |
421 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
422 | Returns 0 if OK, 1 on error. */ | |
423 | ||
424 | int | |
0542c86d PA |
425 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
426 | struct target_section **end) | |
c906108c SS |
427 | { |
428 | unsigned count; | |
429 | ||
430 | count = bfd_count_sections (some_bfd); | |
431 | if (*start) | |
b8c9b27d | 432 | xfree (* start); |
0542c86d | 433 | *start = (struct target_section *) xmalloc (count * sizeof (**start)); |
c906108c | 434 | *end = *start; |
c5aa993b | 435 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 436 | if (*end > *start + count) |
3e43a32a MS |
437 | internal_error (__FILE__, __LINE__, |
438 | _("failed internal consistency check")); | |
c906108c SS |
439 | /* We could realloc the table, but it probably loses for most files. */ |
440 | return 0; | |
441 | } | |
07b82ea5 PA |
442 | |
443 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
444 | current set of target sections. */ | |
445 | ||
446 | void | |
447 | add_target_sections (struct target_section *sections, | |
448 | struct target_section *sections_end) | |
449 | { | |
450 | int count; | |
451 | struct target_section_table *table = current_target_sections; | |
452 | ||
453 | count = sections_end - sections; | |
454 | ||
455 | if (count > 0) | |
456 | { | |
457 | int space = resize_section_table (table, count); | |
d7f9d729 | 458 | |
07b82ea5 PA |
459 | memcpy (table->sections + space, |
460 | sections, count * sizeof (sections[0])); | |
461 | ||
462 | /* If these are the first file sections we can provide memory | |
463 | from, push the file_stratum target. */ | |
6c95b8df PA |
464 | if (!using_exec_ops) |
465 | { | |
466 | using_exec_ops = 1; | |
467 | push_target (&exec_ops); | |
468 | } | |
07b82ea5 PA |
469 | } |
470 | } | |
471 | ||
472 | /* Remove all target sections taken from ABFD. */ | |
473 | ||
474 | void | |
475 | remove_target_sections (bfd *abfd) | |
476 | { | |
477 | struct target_section *src, *dest; | |
07b82ea5 PA |
478 | struct target_section_table *table = current_target_sections; |
479 | ||
480 | dest = table->sections; | |
481 | for (src = table->sections; src < table->sections_end; src++) | |
482 | if (src->bfd != abfd) | |
483 | { | |
484 | /* Keep this section. */ | |
485 | if (dest < src) | |
486 | *dest = *src; | |
487 | dest++; | |
488 | } | |
489 | ||
490 | /* If we've dropped any sections, resize the section table. */ | |
491 | if (dest < src) | |
492 | { | |
493 | int old_count; | |
494 | ||
495 | old_count = resize_section_table (table, dest - src); | |
496 | ||
497 | /* If we don't have any more sections to read memory from, | |
498 | remove the file_stratum target from the stack. */ | |
499 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
500 | { |
501 | struct program_space *pspace; | |
502 | ||
503 | ALL_PSPACES (pspace) | |
504 | if (pspace->target_sections.sections | |
505 | != pspace->target_sections.sections_end) | |
506 | return; | |
507 | ||
508 | unpush_target (&exec_ops); | |
509 | } | |
07b82ea5 PA |
510 | } |
511 | } | |
512 | ||
c906108c SS |
513 | \f |
514 | static void | |
7be0c536 | 515 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
516 | { |
517 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
518 | struct vmap *vp; | |
519 | ||
520 | vp = vmap_bfd->pvmap; | |
521 | ||
522 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
523 | return; | |
524 | ||
dc6a2ca4 | 525 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
526 | { |
527 | vp->tstart = bfd_section_vma (abfd, sect); | |
528 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
529 | vp->tvma = bfd_section_vma (abfd, sect); | |
530 | vp->toffs = sect->filepos; | |
531 | } | |
dc6a2ca4 | 532 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
533 | { |
534 | vp->dstart = bfd_section_vma (abfd, sect); | |
535 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
536 | vp->dvma = bfd_section_vma (abfd, sect); | |
537 | } | |
0963b4bd | 538 | /* Silently ignore other types of sections. (FIXME?) */ |
c906108c SS |
539 | } |
540 | ||
541 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
542 | Return the new vmap. */ | |
543 | ||
544 | struct vmap * | |
fba45db2 | 545 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
546 | { |
547 | struct vmap_and_bfd vmap_bfd; | |
548 | struct vmap *vp, **vpp; | |
549 | ||
550 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
551 | memset ((char *) vp, '\0', sizeof (*vp)); | |
552 | vp->nxt = 0; | |
553 | vp->bfd = abfd; | |
554 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
555 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 556 | |
c906108c SS |
557 | vmap_bfd.pbfd = arch; |
558 | vmap_bfd.pvmap = vp; | |
559 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
560 | ||
0963b4bd | 561 | /* Find the end of the list and append. */ |
c906108c SS |
562 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) |
563 | ; | |
564 | *vpp = vp; | |
565 | ||
566 | return vp; | |
567 | } | |
568 | \f | |
348f8c02 | 569 | |
e6ca34fc PA |
570 | VEC(mem_range_s) * |
571 | section_table_available_memory (VEC(mem_range_s) *memory, | |
424447ee | 572 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
573 | struct target_section *sections, |
574 | struct target_section *sections_end) | |
575 | { | |
576 | struct target_section *p; | |
e6ca34fc PA |
577 | |
578 | for (p = sections; p < sections_end; p++) | |
579 | { | |
580 | if ((bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
581 | & SEC_READONLY) == 0) | |
582 | continue; | |
583 | ||
584 | /* Copy the meta-data, adjusted. */ | |
585 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
586 | { | |
587 | ULONGEST lo1, hi1, lo2, hi2; | |
588 | struct mem_range *r; | |
589 | ||
590 | lo1 = memaddr; | |
591 | hi1 = memaddr + len; | |
592 | ||
593 | lo2 = p->addr; | |
594 | hi2 = p->endaddr; | |
595 | ||
596 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
597 | ||
598 | r->start = max (lo1, lo2); | |
599 | r->length = min (hi1, hi2) - r->start; | |
600 | } | |
601 | } | |
602 | ||
603 | return memory; | |
604 | } | |
605 | ||
07b82ea5 PA |
606 | int |
607 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, | |
608 | ULONGEST offset, LONGEST len, | |
609 | struct target_section *sections, | |
610 | struct target_section *sections_end, | |
611 | const char *section_name) | |
c906108c | 612 | { |
020cc13c | 613 | int res; |
0542c86d | 614 | struct target_section *p; |
07b82ea5 PA |
615 | ULONGEST memaddr = offset; |
616 | ULONGEST memend = memaddr + len; | |
c906108c SS |
617 | |
618 | if (len <= 0) | |
3e43a32a MS |
619 | internal_error (__FILE__, __LINE__, |
620 | _("failed internal consistency check")); | |
c906108c | 621 | |
348f8c02 | 622 | for (p = sections; p < sections_end; p++) |
c906108c | 623 | { |
348f8c02 | 624 | if (section_name && strcmp (section_name, p->the_bfd_section->name) != 0) |
0963b4bd | 625 | continue; /* not the section we need. */ |
c906108c | 626 | if (memaddr >= p->addr) |
3db26b01 JB |
627 | { |
628 | if (memend <= p->endaddr) | |
629 | { | |
630 | /* Entire transfer is within this section. */ | |
07b82ea5 | 631 | if (writebuf) |
85302095 | 632 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 633 | writebuf, memaddr - p->addr, |
85302095 AC |
634 | len); |
635 | else | |
636 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 637 | readbuf, memaddr - p->addr, |
85302095 | 638 | len); |
3db26b01 JB |
639 | return (res != 0) ? len : 0; |
640 | } | |
641 | else if (memaddr >= p->endaddr) | |
642 | { | |
643 | /* This section ends before the transfer starts. */ | |
644 | continue; | |
645 | } | |
646 | else | |
647 | { | |
648 | /* This section overlaps the transfer. Just do half. */ | |
649 | len = p->endaddr - memaddr; | |
07b82ea5 | 650 | if (writebuf) |
85302095 | 651 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 652 | writebuf, memaddr - p->addr, |
85302095 AC |
653 | len); |
654 | else | |
655 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 656 | readbuf, memaddr - p->addr, |
85302095 | 657 | len); |
3db26b01 JB |
658 | return (res != 0) ? len : 0; |
659 | } | |
660 | } | |
c906108c SS |
661 | } |
662 | ||
0963b4bd | 663 | return 0; /* We can't help. */ |
c906108c | 664 | } |
348f8c02 | 665 | |
70221824 | 666 | static struct target_section_table * |
07b82ea5 | 667 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 668 | { |
07b82ea5 | 669 | return current_target_sections; |
348f8c02 PA |
670 | } |
671 | ||
07b82ea5 PA |
672 | static LONGEST |
673 | exec_xfer_partial (struct target_ops *ops, enum target_object object, | |
674 | const char *annex, gdb_byte *readbuf, | |
675 | const gdb_byte *writebuf, | |
676 | ULONGEST offset, LONGEST len) | |
348f8c02 | 677 | { |
07b82ea5 PA |
678 | struct target_section_table *table = target_get_section_table (ops); |
679 | ||
680 | if (object == TARGET_OBJECT_MEMORY) | |
681 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
682 | offset, len, | |
683 | table->sections, | |
684 | table->sections_end, | |
685 | NULL); | |
686 | else | |
687 | return -1; | |
348f8c02 | 688 | } |
c906108c | 689 | \f |
c5aa993b | 690 | |
c906108c | 691 | void |
07b82ea5 | 692 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 693 | { |
5af949e3 | 694 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 695 | struct target_section *p; |
17a912b6 | 696 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 697 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 698 | |
c5aa993b | 699 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 700 | wrap_here (" "); |
a3f17187 | 701 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 702 | if (abfd == exec_bfd) |
51bee8e9 | 703 | { |
3e43a32a MS |
704 | /* gcc-3.4 does not like the initialization in |
705 | <p == t->sections_end>. */ | |
d904de5b | 706 | bfd_vma displacement = 0; |
2f1bdd26 | 707 | bfd_vma entry_point; |
51bee8e9 JK |
708 | |
709 | for (p = t->sections; p < t->sections_end; p++) | |
710 | { | |
711 | asection *asect = p->the_bfd_section; | |
712 | ||
713 | if ((bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD)) | |
714 | != (SEC_ALLOC | SEC_LOAD)) | |
715 | continue; | |
716 | ||
717 | if (bfd_get_section_vma (abfd, asect) <= abfd->start_address | |
718 | && abfd->start_address < (bfd_get_section_vma (abfd, asect) | |
719 | + bfd_get_section_size (asect))) | |
720 | { | |
721 | displacement = p->addr - bfd_get_section_vma (abfd, asect); | |
722 | break; | |
723 | } | |
724 | } | |
725 | if (p == t->sections_end) | |
b37520b6 | 726 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 727 | bfd_get_filename (abfd)); |
51bee8e9 | 728 | |
2f1bdd26 MGD |
729 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
730 | bfd_get_start_address (abfd) | |
731 | + displacement); | |
51bee8e9 | 732 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 733 | paddress (gdbarch, entry_point)); |
51bee8e9 | 734 | } |
07b82ea5 | 735 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 736 | { |
bb599908 PH |
737 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
738 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
739 | |
740 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
741 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
742 | since most output will then be much wider than necessary. It | |
743 | may make sense to test the size of the file and choose the | |
744 | format string accordingly. */ | |
a3f17187 | 745 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
746 | if (info_verbose) |
747 | printf_filtered (" @ %s", | |
bb599908 | 748 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
3e43a32a MS |
749 | printf_filtered (" is %s", bfd_section_name (p->bfd, |
750 | p->the_bfd_section)); | |
c906108c | 751 | if (p->bfd != abfd) |
a3f17187 | 752 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
753 | printf_filtered ("\n"); |
754 | } | |
755 | } | |
756 | ||
757 | static void | |
fba45db2 | 758 | exec_files_info (struct target_ops *t) |
c906108c | 759 | { |
57008375 JK |
760 | if (exec_bfd) |
761 | print_section_info (current_target_sections, exec_bfd); | |
762 | else | |
763 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
764 | |
765 | if (vmap) | |
766 | { | |
5af949e3 | 767 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
c906108c SS |
768 | struct vmap *vp; |
769 | ||
a3f17187 | 770 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e | 771 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
5af949e3 UW |
772 | addr_size * 2, "tstart", |
773 | addr_size * 2, "tend", | |
774 | addr_size * 2, "dstart", | |
775 | addr_size * 2, "dend", | |
d4f3574e | 776 | "section", |
c5aa993b JM |
777 | "file(member)"); |
778 | ||
779 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e | 780 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
5af949e3 UW |
781 | phex (vp->tstart, addr_size), |
782 | phex (vp->tend, addr_size), | |
783 | phex (vp->dstart, addr_size), | |
784 | phex (vp->dend, addr_size), | |
d4f3574e | 785 | vp->name, |
c5aa993b JM |
786 | *vp->member ? "(" : "", vp->member, |
787 | *vp->member ? ")" : ""); | |
c906108c SS |
788 | } |
789 | } | |
790 | ||
791 | static void | |
fba45db2 | 792 | set_section_command (char *args, int from_tty) |
c906108c | 793 | { |
0542c86d | 794 | struct target_section *p; |
c906108c SS |
795 | char *secname; |
796 | unsigned seclen; | |
797 | unsigned long secaddr; | |
798 | char secprint[100]; | |
799 | long offset; | |
07b82ea5 | 800 | struct target_section_table *table; |
c906108c SS |
801 | |
802 | if (args == 0) | |
8a3fe4f8 | 803 | error (_("Must specify section name and its virtual address")); |
c906108c | 804 | |
0963b4bd | 805 | /* Parse out section name. */ |
c5aa993b | 806 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
807 | seclen = args - secname; |
808 | ||
0963b4bd | 809 | /* Parse out new virtual address. */ |
c906108c SS |
810 | secaddr = parse_and_eval_address (args); |
811 | ||
07b82ea5 PA |
812 | table = current_target_sections; |
813 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 814 | { |
57008375 | 815 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 816 | p->the_bfd_section), seclen) |
57008375 | 817 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
818 | { |
819 | offset = secaddr - p->addr; | |
820 | p->addr += offset; | |
821 | p->endaddr += offset; | |
822 | if (from_tty) | |
823 | exec_files_info (&exec_ops); | |
824 | return; | |
825 | } | |
c906108c | 826 | } |
c906108c SS |
827 | if (seclen >= sizeof (secprint)) |
828 | seclen = sizeof (secprint) - 1; | |
829 | strncpy (secprint, secname, seclen); | |
830 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 831 | error (_("Section %s not found"), secprint); |
c906108c SS |
832 | } |
833 | ||
30510692 DJ |
834 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
835 | it to ADDRESS. */ | |
c1bd25fd DJ |
836 | |
837 | void | |
838 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
839 | { | |
0542c86d | 840 | struct target_section *p; |
07b82ea5 | 841 | struct target_section_table *table; |
c1bd25fd | 842 | |
07b82ea5 PA |
843 | table = current_target_sections; |
844 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 845 | { |
0ba1096a | 846 | if (filename_cmp (filename, p->bfd->filename) == 0 |
30510692 | 847 | && index == p->the_bfd_section->index) |
c1bd25fd | 848 | { |
30510692 | 849 | p->endaddr += address - p->addr; |
c1bd25fd | 850 | p->addr = address; |
c1bd25fd DJ |
851 | } |
852 | } | |
853 | } | |
854 | ||
c906108c SS |
855 | /* If mourn is being called in all the right places, this could be say |
856 | `gdb internal error' (since generic_mourn calls | |
857 | breakpoint_init_inferior). */ | |
858 | ||
859 | static int | |
a6d9a66e | 860 | ignore (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt) |
c906108c SS |
861 | { |
862 | return 0; | |
863 | } | |
864 | ||
c35b1492 PA |
865 | static int |
866 | exec_has_memory (struct target_ops *ops) | |
867 | { | |
868 | /* We can provide memory if we have any file/target sections to read | |
869 | from. */ | |
870 | return (current_target_sections->sections | |
871 | != current_target_sections->sections_end); | |
872 | } | |
873 | ||
0963b4bd | 874 | /* Find mapped memory. */ |
be4d1333 MS |
875 | |
876 | extern void | |
b8edc417 | 877 | exec_set_find_memory_regions (int (*func) (find_memory_region_ftype, void *)) |
be4d1333 MS |
878 | { |
879 | exec_ops.to_find_memory_regions = func; | |
880 | } | |
881 | ||
882 | static char *exec_make_note_section (bfd *, int *); | |
883 | ||
c906108c SS |
884 | /* Fill in the exec file target vector. Very few entries need to be |
885 | defined. */ | |
886 | ||
be4d1333 | 887 | static void |
fba45db2 | 888 | init_exec_ops (void) |
c906108c SS |
889 | { |
890 | exec_ops.to_shortname = "exec"; | |
891 | exec_ops.to_longname = "Local exec file"; | |
892 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
893 | Specify the filename of the executable file."; | |
1adeb98a | 894 | exec_ops.to_open = exec_open; |
6c95b8df | 895 | exec_ops.to_close = exec_close_1; |
c906108c | 896 | exec_ops.to_attach = find_default_attach; |
07b82ea5 PA |
897 | exec_ops.to_xfer_partial = exec_xfer_partial; |
898 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
899 | exec_ops.to_files_info = exec_files_info; |
900 | exec_ops.to_insert_breakpoint = ignore; | |
901 | exec_ops.to_remove_breakpoint = ignore; | |
902 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c | 903 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 904 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 905 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 906 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
907 | } |
908 | ||
909 | void | |
fba45db2 | 910 | _initialize_exec (void) |
c906108c SS |
911 | { |
912 | struct cmd_list_element *c; | |
913 | ||
914 | init_exec_ops (); | |
915 | ||
916 | if (!dbx_commands) | |
917 | { | |
1a966eab AC |
918 | c = add_cmd ("file", class_files, file_command, _("\ |
919 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
920 | It is read for its symbols, for getting the contents of pure memory,\n\ |
921 | and it is the program executed when you use the `run' command.\n\ | |
922 | If FILE cannot be found as specified, your execution directory path\n\ | |
923 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 924 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 925 | set_cmd_completer (c, filename_completer); |
c906108c SS |
926 | } |
927 | ||
1a966eab AC |
928 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
929 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
930 | If FILE cannot be found as specified, your execution directory path\n\ |
931 | is searched for a command of that name.\n\ | |
1a966eab | 932 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 933 | set_cmd_completer (c, filename_completer); |
c906108c | 934 | |
1bedd215 AC |
935 | add_com ("section", class_files, set_section_command, _("\ |
936 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
937 | This can be used if the exec file does not contain section addresses,\n\ |
938 | (such as in the a.out format), or when the addresses specified in the\n\ | |
939 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 940 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 941 | |
5bf193a2 AC |
942 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
943 | Set writing into executable and core files."), _("\ | |
944 | Show writing into executable and core files."), NULL, | |
945 | NULL, | |
920d2a44 | 946 | show_write_files, |
5bf193a2 | 947 | &setlist, &showlist); |
c5aa993b | 948 | |
c906108c SS |
949 | add_target (&exec_ops); |
950 | } | |
be4d1333 MS |
951 | |
952 | static char * | |
953 | exec_make_note_section (bfd *obfd, int *note_size) | |
954 | { | |
8a3fe4f8 | 955 | error (_("Can't create a corefile")); |
be4d1333 | 956 | } |