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 | ||
c906108c SS |
130 | if (vp->objfile) |
131 | { | |
132 | free_objfile (vp->objfile); | |
133 | need_symtab_cleanup = 1; | |
134 | } | |
da1cc82f TT |
135 | |
136 | gdb_bfd_unref (vp->bfd); | |
c906108c | 137 | |
b8c9b27d | 138 | xfree (vp); |
c906108c SS |
139 | } |
140 | ||
141 | vmap = NULL; | |
142 | ||
6c95b8df PA |
143 | { |
144 | struct program_space *ss; | |
145 | struct cleanup *old_chain; | |
c906108c | 146 | |
6c95b8df PA |
147 | old_chain = save_current_program_space (); |
148 | ALL_PSPACES (ss) | |
149 | { | |
150 | set_current_program_space (ss); | |
151 | ||
152 | /* Delete all target sections. */ | |
153 | resize_section_table | |
154 | (current_target_sections, | |
155 | -resize_section_table (current_target_sections, 0)); | |
156 | ||
157 | exec_close (); | |
158 | } | |
159 | ||
160 | do_cleanups (old_chain); | |
161 | } | |
c906108c SS |
162 | } |
163 | ||
1adeb98a FN |
164 | void |
165 | exec_file_clear (int from_tty) | |
166 | { | |
167 | /* Remove exec file. */ | |
6c95b8df | 168 | exec_close (); |
1adeb98a FN |
169 | |
170 | if (from_tty) | |
a3f17187 | 171 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
172 | } |
173 | ||
907083d1 | 174 | /* Set FILENAME as the new exec file. |
c906108c | 175 | |
c5aa993b JM |
176 | This function is intended to be behave essentially the same |
177 | as exec_file_command, except that the latter will detect when | |
178 | a target is being debugged, and will ask the user whether it | |
179 | should be shut down first. (If the answer is "no", then the | |
180 | new file is ignored.) | |
c906108c | 181 | |
c5aa993b JM |
182 | This file is used by exec_file_command, to do the work of opening |
183 | and processing the exec file after any prompting has happened. | |
c906108c | 184 | |
c5aa993b JM |
185 | And, it is used by child_attach, when the attach command was |
186 | given a pid but not a exec pathname, and the attach command could | |
187 | figure out the pathname from the pid. (In this case, we shouldn't | |
188 | ask the user whether the current target should be shut down -- | |
907083d1 | 189 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
190 | |
191 | void | |
1adeb98a | 192 | exec_file_attach (char *filename, int from_tty) |
c906108c | 193 | { |
c906108c | 194 | /* Remove any previous exec file. */ |
6c95b8df | 195 | exec_close (); |
c906108c SS |
196 | |
197 | /* Now open and digest the file the user requested, if any. */ | |
198 | ||
1adeb98a FN |
199 | if (!filename) |
200 | { | |
201 | if (from_tty) | |
a3f17187 | 202 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
203 | |
204 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
205 | } |
206 | else | |
c906108c | 207 | { |
f7545552 | 208 | struct cleanup *cleanups; |
c906108c SS |
209 | char *scratch_pathname; |
210 | int scratch_chan; | |
07b82ea5 | 211 | struct target_section *sections = NULL, *sections_end = NULL; |
d18b8b7a | 212 | char **matching; |
c5aa993b | 213 | |
014d698b | 214 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
fbdebf46 | 215 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
c906108c | 216 | &scratch_pathname); |
cfc3008e | 217 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 218 | if (scratch_chan < 0) |
c5aa993b JM |
219 | { |
220 | char *exename = alloca (strlen (filename) + 5); | |
d7f9d729 | 221 | |
c5aa993b | 222 | strcat (strcpy (exename, filename), ".exe"); |
014d698b | 223 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
fbdebf46 | 224 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, |
014d698b | 225 | &scratch_pathname); |
c5aa993b | 226 | } |
c906108c | 227 | #endif |
a4453b7e TT |
228 | |
229 | cleanups = make_cleanup (xfree, scratch_pathname); | |
230 | ||
c906108c SS |
231 | if (scratch_chan < 0) |
232 | perror_with_name (filename); | |
64c31149 TT |
233 | exec_bfd = gdb_bfd_fopen (scratch_pathname, gnutarget, |
234 | write_files ? FOPEN_RUB : FOPEN_RB, | |
235 | scratch_chan); | |
c906108c SS |
236 | |
237 | if (!exec_bfd) | |
9fe4a216 | 238 | { |
9fe4a216 TT |
239 | error (_("\"%s\": could not open as an executable file: %s"), |
240 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
241 | } | |
c906108c | 242 | |
d18b8b7a | 243 | if (!bfd_check_format_matches (exec_bfd, bfd_object, &matching)) |
c906108c SS |
244 | { |
245 | /* Make sure to close exec_bfd, or else "run" might try to use | |
246 | it. */ | |
6c95b8df | 247 | exec_close (); |
8a3fe4f8 | 248 | error (_("\"%s\": not in executable format: %s"), |
d18b8b7a HZ |
249 | scratch_pathname, |
250 | gdb_bfd_errmsg (bfd_get_error (), matching)); | |
c906108c SS |
251 | } |
252 | ||
253 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 254 | way to accomplish. */ |
52d16ba8 | 255 | #ifdef DEPRECATED_IBM6000_TARGET |
0963b4bd | 256 | /* Setup initial vmap. */ |
c906108c SS |
257 | |
258 | map_vmap (exec_bfd, 0); | |
259 | if (vmap == NULL) | |
260 | { | |
261 | /* Make sure to close exec_bfd, or else "run" might try to use | |
262 | it. */ | |
6c95b8df | 263 | exec_close (); |
8a3fe4f8 | 264 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
265 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
266 | } | |
52d16ba8 | 267 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c | 268 | |
07b82ea5 | 269 | if (build_section_table (exec_bfd, §ions, §ions_end)) |
c906108c SS |
270 | { |
271 | /* Make sure to close exec_bfd, or else "run" might try to use | |
272 | it. */ | |
6c95b8df | 273 | exec_close (); |
8a3fe4f8 | 274 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
275 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
276 | } | |
277 | ||
c04ea773 DJ |
278 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
279 | ||
c906108c SS |
280 | validate_files (); |
281 | ||
282 | set_gdbarch_from_file (exec_bfd); | |
283 | ||
07b82ea5 | 284 | /* Add the executable's sections to the current address spaces' |
6c95b8df PA |
285 | list of sections. This possibly pushes the exec_ops |
286 | target. */ | |
07b82ea5 PA |
287 | add_target_sections (sections, sections_end); |
288 | xfree (sections); | |
c906108c SS |
289 | |
290 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
291 | if (deprecated_exec_file_display_hook) |
292 | (*deprecated_exec_file_display_hook) (filename); | |
f7545552 TT |
293 | |
294 | do_cleanups (cleanups); | |
c906108c | 295 | } |
ce7d4522 | 296 | bfd_cache_close_all (); |
781b42b0 | 297 | observer_notify_executable_changed (); |
c906108c SS |
298 | } |
299 | ||
300 | /* Process the first arg in ARGS as the new exec file. | |
301 | ||
c5aa993b JM |
302 | Note that we have to explicitly ignore additional args, since we can |
303 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
304 | which can take multiple args. |
305 | ||
0963b4bd | 306 | If ARGS is NULL, we just want to close the exec file. */ |
c906108c | 307 | |
1adeb98a | 308 | static void |
fba45db2 | 309 | exec_file_command (char *args, int from_tty) |
c906108c | 310 | { |
1adeb98a FN |
311 | char **argv; |
312 | char *filename; | |
4c42eaff DJ |
313 | |
314 | if (from_tty && target_has_execution | |
315 | && !query (_("A program is being debugged already.\n" | |
316 | "Are you sure you want to change the file? "))) | |
317 | error (_("File not changed.")); | |
1adeb98a FN |
318 | |
319 | if (args) | |
320 | { | |
f7545552 TT |
321 | struct cleanup *cleanups; |
322 | ||
1adeb98a FN |
323 | /* Scan through the args and pick up the first non option arg |
324 | as the filename. */ | |
325 | ||
d1a41061 | 326 | argv = gdb_buildargv (args); |
f7545552 | 327 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
328 | |
329 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
330 | {; | |
331 | } | |
332 | if (*argv == NULL) | |
8a3fe4f8 | 333 | error (_("No executable file name was specified")); |
1adeb98a FN |
334 | |
335 | filename = tilde_expand (*argv); | |
336 | make_cleanup (xfree, filename); | |
337 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
338 | |
339 | do_cleanups (cleanups); | |
1adeb98a FN |
340 | } |
341 | else | |
342 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
343 | } |
344 | ||
0963b4bd | 345 | /* Set both the exec file and the symbol file, in one command. |
c906108c SS |
346 | What a novelty. Why did GDB go through four major releases before this |
347 | command was added? */ | |
348 | ||
349 | static void | |
fba45db2 | 350 | file_command (char *arg, int from_tty) |
c906108c SS |
351 | { |
352 | /* FIXME, if we lose on reading the symbol file, we should revert | |
353 | the exec file, but that's rough. */ | |
354 | exec_file_command (arg, from_tty); | |
355 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
356 | if (deprecated_file_changed_hook) |
357 | deprecated_file_changed_hook (arg); | |
c906108c | 358 | } |
c906108c | 359 | \f |
c5aa993b | 360 | |
0963b4bd | 361 | /* Locate all mappable sections of a BFD file. |
c906108c SS |
362 | table_pp_char is a char * to get it through bfd_map_over_sections; |
363 | we cast it back to its proper type. */ | |
364 | ||
365 | static void | |
7be0c536 AC |
366 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
367 | void *table_pp_char) | |
c906108c | 368 | { |
0542c86d | 369 | struct target_section **table_pp = (struct target_section **) table_pp_char; |
c906108c SS |
370 | flagword aflag; |
371 | ||
0f5d55d8 JB |
372 | /* Check the section flags, but do not discard zero-length sections, since |
373 | some symbols may still be attached to this section. For instance, we | |
374 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
375 | section to which a symbol named "_end" was attached. The address | |
376 | of this symbol still needs to be relocated. */ | |
c906108c SS |
377 | aflag = bfd_get_section_flags (abfd, asect); |
378 | if (!(aflag & SEC_ALLOC)) | |
379 | return; | |
0f5d55d8 | 380 | |
c906108c SS |
381 | (*table_pp)->bfd = abfd; |
382 | (*table_pp)->the_bfd_section = asect; | |
383 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
384 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
385 | (*table_pp)++; | |
386 | } | |
387 | ||
07b82ea5 PA |
388 | int |
389 | resize_section_table (struct target_section_table *table, int num_added) | |
390 | { | |
391 | struct target_section *old_value; | |
392 | int old_count; | |
393 | int new_count; | |
394 | ||
395 | old_value = table->sections; | |
396 | old_count = table->sections_end - table->sections; | |
397 | ||
398 | new_count = num_added + old_count; | |
399 | ||
400 | if (new_count) | |
401 | { | |
402 | table->sections = xrealloc (table->sections, | |
403 | sizeof (struct target_section) * new_count); | |
404 | table->sections_end = table->sections + new_count; | |
405 | } | |
406 | else | |
407 | { | |
408 | xfree (table->sections); | |
409 | table->sections = table->sections_end = NULL; | |
410 | } | |
411 | ||
412 | return old_count; | |
413 | } | |
414 | ||
c906108c SS |
415 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. |
416 | Returns 0 if OK, 1 on error. */ | |
417 | ||
418 | int | |
0542c86d PA |
419 | build_section_table (struct bfd *some_bfd, struct target_section **start, |
420 | struct target_section **end) | |
c906108c SS |
421 | { |
422 | unsigned count; | |
423 | ||
424 | count = bfd_count_sections (some_bfd); | |
425 | if (*start) | |
b8c9b27d | 426 | xfree (* start); |
0542c86d | 427 | *start = (struct target_section *) xmalloc (count * sizeof (**start)); |
c906108c | 428 | *end = *start; |
c5aa993b | 429 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 430 | if (*end > *start + count) |
3e43a32a MS |
431 | internal_error (__FILE__, __LINE__, |
432 | _("failed internal consistency check")); | |
c906108c SS |
433 | /* We could realloc the table, but it probably loses for most files. */ |
434 | return 0; | |
435 | } | |
07b82ea5 PA |
436 | |
437 | /* Add the sections array defined by [SECTIONS..SECTIONS_END[ to the | |
438 | current set of target sections. */ | |
439 | ||
440 | void | |
441 | add_target_sections (struct target_section *sections, | |
442 | struct target_section *sections_end) | |
443 | { | |
444 | int count; | |
445 | struct target_section_table *table = current_target_sections; | |
446 | ||
447 | count = sections_end - sections; | |
448 | ||
449 | if (count > 0) | |
450 | { | |
451 | int space = resize_section_table (table, count); | |
d7f9d729 | 452 | |
07b82ea5 PA |
453 | memcpy (table->sections + space, |
454 | sections, count * sizeof (sections[0])); | |
455 | ||
456 | /* If these are the first file sections we can provide memory | |
457 | from, push the file_stratum target. */ | |
6c95b8df PA |
458 | if (!using_exec_ops) |
459 | { | |
460 | using_exec_ops = 1; | |
461 | push_target (&exec_ops); | |
462 | } | |
07b82ea5 PA |
463 | } |
464 | } | |
465 | ||
466 | /* Remove all target sections taken from ABFD. */ | |
467 | ||
468 | void | |
469 | remove_target_sections (bfd *abfd) | |
470 | { | |
471 | struct target_section *src, *dest; | |
07b82ea5 PA |
472 | struct target_section_table *table = current_target_sections; |
473 | ||
474 | dest = table->sections; | |
475 | for (src = table->sections; src < table->sections_end; src++) | |
476 | if (src->bfd != abfd) | |
477 | { | |
478 | /* Keep this section. */ | |
479 | if (dest < src) | |
480 | *dest = *src; | |
481 | dest++; | |
482 | } | |
483 | ||
484 | /* If we've dropped any sections, resize the section table. */ | |
485 | if (dest < src) | |
486 | { | |
487 | int old_count; | |
488 | ||
489 | old_count = resize_section_table (table, dest - src); | |
490 | ||
491 | /* If we don't have any more sections to read memory from, | |
492 | remove the file_stratum target from the stack. */ | |
493 | if (old_count + (dest - src) == 0) | |
6c95b8df PA |
494 | { |
495 | struct program_space *pspace; | |
496 | ||
497 | ALL_PSPACES (pspace) | |
498 | if (pspace->target_sections.sections | |
499 | != pspace->target_sections.sections_end) | |
500 | return; | |
501 | ||
502 | unpush_target (&exec_ops); | |
503 | } | |
07b82ea5 PA |
504 | } |
505 | } | |
506 | ||
c906108c SS |
507 | \f |
508 | static void | |
7be0c536 | 509 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
510 | { |
511 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
512 | struct vmap *vp; | |
513 | ||
514 | vp = vmap_bfd->pvmap; | |
515 | ||
516 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
517 | return; | |
518 | ||
dc6a2ca4 | 519 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
520 | { |
521 | vp->tstart = bfd_section_vma (abfd, sect); | |
522 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
523 | vp->tvma = bfd_section_vma (abfd, sect); | |
524 | vp->toffs = sect->filepos; | |
525 | } | |
dc6a2ca4 | 526 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
527 | { |
528 | vp->dstart = bfd_section_vma (abfd, sect); | |
529 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
530 | vp->dvma = bfd_section_vma (abfd, sect); | |
531 | } | |
0963b4bd | 532 | /* Silently ignore other types of sections. (FIXME?) */ |
c906108c SS |
533 | } |
534 | ||
535 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
536 | Return the new vmap. */ | |
537 | ||
538 | struct vmap * | |
fba45db2 | 539 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
540 | { |
541 | struct vmap_and_bfd vmap_bfd; | |
542 | struct vmap *vp, **vpp; | |
543 | ||
544 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
545 | memset ((char *) vp, '\0', sizeof (*vp)); | |
546 | vp->nxt = 0; | |
547 | vp->bfd = abfd; | |
da1cc82f | 548 | gdb_bfd_ref (abfd); |
c906108c SS |
549 | vp->name = bfd_get_filename (arch ? arch : abfd); |
550 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 551 | |
c906108c SS |
552 | vmap_bfd.pbfd = arch; |
553 | vmap_bfd.pvmap = vp; | |
554 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
555 | ||
0963b4bd | 556 | /* Find the end of the list and append. */ |
c906108c SS |
557 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) |
558 | ; | |
559 | *vpp = vp; | |
560 | ||
561 | return vp; | |
562 | } | |
563 | \f | |
348f8c02 | 564 | |
e6ca34fc PA |
565 | VEC(mem_range_s) * |
566 | section_table_available_memory (VEC(mem_range_s) *memory, | |
424447ee | 567 | CORE_ADDR memaddr, ULONGEST len, |
e6ca34fc PA |
568 | struct target_section *sections, |
569 | struct target_section *sections_end) | |
570 | { | |
571 | struct target_section *p; | |
e6ca34fc PA |
572 | |
573 | for (p = sections; p < sections_end; p++) | |
574 | { | |
575 | if ((bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
576 | & SEC_READONLY) == 0) | |
577 | continue; | |
578 | ||
579 | /* Copy the meta-data, adjusted. */ | |
580 | if (mem_ranges_overlap (p->addr, p->endaddr - p->addr, memaddr, len)) | |
581 | { | |
582 | ULONGEST lo1, hi1, lo2, hi2; | |
583 | struct mem_range *r; | |
584 | ||
585 | lo1 = memaddr; | |
586 | hi1 = memaddr + len; | |
587 | ||
588 | lo2 = p->addr; | |
589 | hi2 = p->endaddr; | |
590 | ||
591 | r = VEC_safe_push (mem_range_s, memory, NULL); | |
592 | ||
593 | r->start = max (lo1, lo2); | |
594 | r->length = min (hi1, hi2) - r->start; | |
595 | } | |
596 | } | |
597 | ||
598 | return memory; | |
599 | } | |
600 | ||
07b82ea5 PA |
601 | int |
602 | section_table_xfer_memory_partial (gdb_byte *readbuf, const gdb_byte *writebuf, | |
603 | ULONGEST offset, LONGEST len, | |
604 | struct target_section *sections, | |
605 | struct target_section *sections_end, | |
606 | const char *section_name) | |
c906108c | 607 | { |
020cc13c | 608 | int res; |
0542c86d | 609 | struct target_section *p; |
07b82ea5 PA |
610 | ULONGEST memaddr = offset; |
611 | ULONGEST memend = memaddr + len; | |
c906108c SS |
612 | |
613 | if (len <= 0) | |
3e43a32a MS |
614 | internal_error (__FILE__, __LINE__, |
615 | _("failed internal consistency check")); | |
c906108c | 616 | |
348f8c02 | 617 | for (p = sections; p < sections_end; p++) |
c906108c | 618 | { |
348f8c02 | 619 | if (section_name && strcmp (section_name, p->the_bfd_section->name) != 0) |
0963b4bd | 620 | continue; /* not the section we need. */ |
c906108c | 621 | if (memaddr >= p->addr) |
3db26b01 JB |
622 | { |
623 | if (memend <= p->endaddr) | |
624 | { | |
625 | /* Entire transfer is within this section. */ | |
07b82ea5 | 626 | if (writebuf) |
85302095 | 627 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 628 | writebuf, memaddr - p->addr, |
85302095 AC |
629 | len); |
630 | else | |
631 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 632 | readbuf, memaddr - p->addr, |
85302095 | 633 | len); |
3db26b01 JB |
634 | return (res != 0) ? len : 0; |
635 | } | |
636 | else if (memaddr >= p->endaddr) | |
637 | { | |
638 | /* This section ends before the transfer starts. */ | |
639 | continue; | |
640 | } | |
641 | else | |
642 | { | |
643 | /* This section overlaps the transfer. Just do half. */ | |
644 | len = p->endaddr - memaddr; | |
07b82ea5 | 645 | if (writebuf) |
85302095 | 646 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, |
07b82ea5 | 647 | writebuf, memaddr - p->addr, |
85302095 AC |
648 | len); |
649 | else | |
650 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
07b82ea5 | 651 | readbuf, memaddr - p->addr, |
85302095 | 652 | len); |
3db26b01 JB |
653 | return (res != 0) ? len : 0; |
654 | } | |
655 | } | |
c906108c SS |
656 | } |
657 | ||
0963b4bd | 658 | return 0; /* We can't help. */ |
c906108c | 659 | } |
348f8c02 | 660 | |
70221824 | 661 | static struct target_section_table * |
07b82ea5 | 662 | exec_get_section_table (struct target_ops *ops) |
348f8c02 | 663 | { |
07b82ea5 | 664 | return current_target_sections; |
348f8c02 PA |
665 | } |
666 | ||
07b82ea5 PA |
667 | static LONGEST |
668 | exec_xfer_partial (struct target_ops *ops, enum target_object object, | |
669 | const char *annex, gdb_byte *readbuf, | |
670 | const gdb_byte *writebuf, | |
671 | ULONGEST offset, LONGEST len) | |
348f8c02 | 672 | { |
07b82ea5 PA |
673 | struct target_section_table *table = target_get_section_table (ops); |
674 | ||
675 | if (object == TARGET_OBJECT_MEMORY) | |
676 | return section_table_xfer_memory_partial (readbuf, writebuf, | |
677 | offset, len, | |
678 | table->sections, | |
679 | table->sections_end, | |
680 | NULL); | |
681 | else | |
682 | return -1; | |
348f8c02 | 683 | } |
c906108c | 684 | \f |
c5aa993b | 685 | |
c906108c | 686 | void |
07b82ea5 | 687 | print_section_info (struct target_section_table *t, bfd *abfd) |
c906108c | 688 | { |
5af949e3 | 689 | struct gdbarch *gdbarch = gdbarch_from_bfd (abfd); |
0542c86d | 690 | struct target_section *p; |
17a912b6 | 691 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
5af949e3 | 692 | int wid = gdbarch_addr_bit (gdbarch) <= 32 ? 8 : 16; |
c906108c | 693 | |
c5aa993b | 694 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 695 | wrap_here (" "); |
a3f17187 | 696 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 697 | if (abfd == exec_bfd) |
51bee8e9 | 698 | { |
3e43a32a MS |
699 | /* gcc-3.4 does not like the initialization in |
700 | <p == t->sections_end>. */ | |
d904de5b | 701 | bfd_vma displacement = 0; |
2f1bdd26 | 702 | bfd_vma entry_point; |
51bee8e9 JK |
703 | |
704 | for (p = t->sections; p < t->sections_end; p++) | |
705 | { | |
706 | asection *asect = p->the_bfd_section; | |
707 | ||
708 | if ((bfd_get_section_flags (abfd, asect) & (SEC_ALLOC | SEC_LOAD)) | |
709 | != (SEC_ALLOC | SEC_LOAD)) | |
710 | continue; | |
711 | ||
712 | if (bfd_get_section_vma (abfd, asect) <= abfd->start_address | |
713 | && abfd->start_address < (bfd_get_section_vma (abfd, asect) | |
714 | + bfd_get_section_size (asect))) | |
715 | { | |
716 | displacement = p->addr - bfd_get_section_vma (abfd, asect); | |
717 | break; | |
718 | } | |
719 | } | |
720 | if (p == t->sections_end) | |
b37520b6 | 721 | warning (_("Cannot find section for the entry point of %s."), |
d904de5b | 722 | bfd_get_filename (abfd)); |
51bee8e9 | 723 | |
2f1bdd26 MGD |
724 | entry_point = gdbarch_addr_bits_remove (gdbarch, |
725 | bfd_get_start_address (abfd) | |
726 | + displacement); | |
51bee8e9 | 727 | printf_filtered (_("\tEntry point: %s\n"), |
2f1bdd26 | 728 | paddress (gdbarch, entry_point)); |
51bee8e9 | 729 | } |
07b82ea5 | 730 | for (p = t->sections; p < t->sections_end; p++) |
c906108c | 731 | { |
bb599908 PH |
732 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
733 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
734 | |
735 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
736 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
737 | since most output will then be much wider than necessary. It | |
738 | may make sense to test the size of the file and choose the | |
739 | format string accordingly. */ | |
a3f17187 | 740 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
741 | if (info_verbose) |
742 | printf_filtered (" @ %s", | |
bb599908 | 743 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
3e43a32a MS |
744 | printf_filtered (" is %s", bfd_section_name (p->bfd, |
745 | p->the_bfd_section)); | |
c906108c | 746 | if (p->bfd != abfd) |
a3f17187 | 747 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
748 | printf_filtered ("\n"); |
749 | } | |
750 | } | |
751 | ||
752 | static void | |
fba45db2 | 753 | exec_files_info (struct target_ops *t) |
c906108c | 754 | { |
57008375 JK |
755 | if (exec_bfd) |
756 | print_section_info (current_target_sections, exec_bfd); | |
757 | else | |
758 | puts_filtered (_("\t<no file loaded>\n")); | |
c906108c SS |
759 | |
760 | if (vmap) | |
761 | { | |
5af949e3 | 762 | int addr_size = gdbarch_addr_bit (target_gdbarch) / 8; |
c906108c SS |
763 | struct vmap *vp; |
764 | ||
a3f17187 | 765 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e | 766 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
5af949e3 UW |
767 | addr_size * 2, "tstart", |
768 | addr_size * 2, "tend", | |
769 | addr_size * 2, "dstart", | |
770 | addr_size * 2, "dend", | |
d4f3574e | 771 | "section", |
c5aa993b JM |
772 | "file(member)"); |
773 | ||
774 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e | 775 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
5af949e3 UW |
776 | phex (vp->tstart, addr_size), |
777 | phex (vp->tend, addr_size), | |
778 | phex (vp->dstart, addr_size), | |
779 | phex (vp->dend, addr_size), | |
d4f3574e | 780 | vp->name, |
c5aa993b JM |
781 | *vp->member ? "(" : "", vp->member, |
782 | *vp->member ? ")" : ""); | |
c906108c SS |
783 | } |
784 | } | |
785 | ||
786 | static void | |
fba45db2 | 787 | set_section_command (char *args, int from_tty) |
c906108c | 788 | { |
0542c86d | 789 | struct target_section *p; |
c906108c SS |
790 | char *secname; |
791 | unsigned seclen; | |
792 | unsigned long secaddr; | |
793 | char secprint[100]; | |
794 | long offset; | |
07b82ea5 | 795 | struct target_section_table *table; |
c906108c SS |
796 | |
797 | if (args == 0) | |
8a3fe4f8 | 798 | error (_("Must specify section name and its virtual address")); |
c906108c | 799 | |
0963b4bd | 800 | /* Parse out section name. */ |
c5aa993b | 801 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
802 | seclen = args - secname; |
803 | ||
0963b4bd | 804 | /* Parse out new virtual address. */ |
c906108c SS |
805 | secaddr = parse_and_eval_address (args); |
806 | ||
07b82ea5 PA |
807 | table = current_target_sections; |
808 | for (p = table->sections; p < table->sections_end; p++) | |
c5aa993b | 809 | { |
57008375 | 810 | if (!strncmp (secname, bfd_section_name (p->bfd, |
3e43a32a | 811 | p->the_bfd_section), seclen) |
57008375 | 812 | && bfd_section_name (p->bfd, p->the_bfd_section)[seclen] == '\0') |
c5aa993b JM |
813 | { |
814 | offset = secaddr - p->addr; | |
815 | p->addr += offset; | |
816 | p->endaddr += offset; | |
817 | if (from_tty) | |
818 | exec_files_info (&exec_ops); | |
819 | return; | |
820 | } | |
c906108c | 821 | } |
c906108c SS |
822 | if (seclen >= sizeof (secprint)) |
823 | seclen = sizeof (secprint) - 1; | |
824 | strncpy (secprint, secname, seclen); | |
825 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 826 | error (_("Section %s not found"), secprint); |
c906108c SS |
827 | } |
828 | ||
30510692 DJ |
829 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
830 | it to ADDRESS. */ | |
c1bd25fd DJ |
831 | |
832 | void | |
833 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
834 | { | |
0542c86d | 835 | struct target_section *p; |
07b82ea5 | 836 | struct target_section_table *table; |
c1bd25fd | 837 | |
07b82ea5 PA |
838 | table = current_target_sections; |
839 | for (p = table->sections; p < table->sections_end; p++) | |
c1bd25fd | 840 | { |
0ba1096a | 841 | if (filename_cmp (filename, p->bfd->filename) == 0 |
30510692 | 842 | && index == p->the_bfd_section->index) |
c1bd25fd | 843 | { |
30510692 | 844 | p->endaddr += address - p->addr; |
c1bd25fd | 845 | p->addr = address; |
c1bd25fd DJ |
846 | } |
847 | } | |
848 | } | |
849 | ||
c906108c SS |
850 | /* If mourn is being called in all the right places, this could be say |
851 | `gdb internal error' (since generic_mourn calls | |
852 | breakpoint_init_inferior). */ | |
853 | ||
854 | static int | |
a6d9a66e | 855 | ignore (struct gdbarch *gdbarch, struct bp_target_info *bp_tgt) |
c906108c SS |
856 | { |
857 | return 0; | |
858 | } | |
859 | ||
c35b1492 PA |
860 | static int |
861 | exec_has_memory (struct target_ops *ops) | |
862 | { | |
863 | /* We can provide memory if we have any file/target sections to read | |
864 | from. */ | |
865 | return (current_target_sections->sections | |
866 | != current_target_sections->sections_end); | |
867 | } | |
868 | ||
0963b4bd | 869 | /* Find mapped memory. */ |
be4d1333 MS |
870 | |
871 | extern void | |
b8edc417 | 872 | exec_set_find_memory_regions (int (*func) (find_memory_region_ftype, void *)) |
be4d1333 MS |
873 | { |
874 | exec_ops.to_find_memory_regions = func; | |
875 | } | |
876 | ||
877 | static char *exec_make_note_section (bfd *, int *); | |
878 | ||
c906108c SS |
879 | /* Fill in the exec file target vector. Very few entries need to be |
880 | defined. */ | |
881 | ||
be4d1333 | 882 | static void |
fba45db2 | 883 | init_exec_ops (void) |
c906108c SS |
884 | { |
885 | exec_ops.to_shortname = "exec"; | |
886 | exec_ops.to_longname = "Local exec file"; | |
887 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
888 | Specify the filename of the executable file."; | |
1adeb98a | 889 | exec_ops.to_open = exec_open; |
6c95b8df | 890 | exec_ops.to_close = exec_close_1; |
c906108c | 891 | exec_ops.to_attach = find_default_attach; |
07b82ea5 PA |
892 | exec_ops.to_xfer_partial = exec_xfer_partial; |
893 | exec_ops.to_get_section_table = exec_get_section_table; | |
c906108c SS |
894 | exec_ops.to_files_info = exec_files_info; |
895 | exec_ops.to_insert_breakpoint = ignore; | |
896 | exec_ops.to_remove_breakpoint = ignore; | |
897 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c | 898 | exec_ops.to_stratum = file_stratum; |
c35b1492 | 899 | exec_ops.to_has_memory = exec_has_memory; |
be4d1333 | 900 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 901 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
902 | } |
903 | ||
904 | void | |
fba45db2 | 905 | _initialize_exec (void) |
c906108c SS |
906 | { |
907 | struct cmd_list_element *c; | |
908 | ||
909 | init_exec_ops (); | |
910 | ||
911 | if (!dbx_commands) | |
912 | { | |
1a966eab AC |
913 | c = add_cmd ("file", class_files, file_command, _("\ |
914 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
915 | It is read for its symbols, for getting the contents of pure memory,\n\ |
916 | and it is the program executed when you use the `run' command.\n\ | |
917 | If FILE cannot be found as specified, your execution directory path\n\ | |
918 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 919 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 920 | set_cmd_completer (c, filename_completer); |
c906108c SS |
921 | } |
922 | ||
1a966eab AC |
923 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
924 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
925 | If FILE cannot be found as specified, your execution directory path\n\ |
926 | is searched for a command of that name.\n\ | |
1a966eab | 927 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 928 | set_cmd_completer (c, filename_completer); |
c906108c | 929 | |
1bedd215 AC |
930 | add_com ("section", class_files, set_section_command, _("\ |
931 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
932 | This can be used if the exec file does not contain section addresses,\n\ |
933 | (such as in the a.out format), or when the addresses specified in the\n\ | |
934 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 935 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 936 | |
5bf193a2 AC |
937 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
938 | Set writing into executable and core files."), _("\ | |
939 | Show writing into executable and core files."), NULL, | |
940 | NULL, | |
920d2a44 | 941 | show_write_files, |
5bf193a2 | 942 | &setlist, &showlist); |
c5aa993b | 943 | |
c906108c SS |
944 | add_target (&exec_ops); |
945 | } | |
be4d1333 MS |
946 | |
947 | static char * | |
948 | exec_make_note_section (bfd *obfd, int *note_size) | |
949 | { | |
8a3fe4f8 | 950 | error (_("Can't create a corefile")); |
be4d1333 | 951 | } |