Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
6aba47ca | 3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
0fb0cc75 | 4 | 1998, 1999, 2000, 2001, 2002, 2003, 2007, 2008, 2009 |
9b254dd1 | 5 | Free Software Foundation, Inc. |
c906108c | 6 | |
c5aa993b | 7 | This file is part of GDB. |
c906108c | 8 | |
c5aa993b JM |
9 | This program is free software; you can redistribute it and/or modify |
10 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 11 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 12 | (at your option) any later version. |
c906108c | 13 | |
c5aa993b JM |
14 | This program is distributed in the hope that it will be useful, |
15 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
17 | GNU General Public License for more details. | |
c906108c | 18 | |
c5aa993b | 19 | You should have received a copy of the GNU General Public License |
a9762ec7 | 20 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
21 | |
22 | #include "defs.h" | |
23 | #include "frame.h" | |
24 | #include "inferior.h" | |
25 | #include "target.h" | |
26 | #include "gdbcmd.h" | |
27 | #include "language.h" | |
28 | #include "symfile.h" | |
29 | #include "objfiles.h" | |
c5f0f3d0 | 30 | #include "completer.h" |
fd0407d6 | 31 | #include "value.h" |
4646aa9d | 32 | #include "exec.h" |
ea53e89f | 33 | #include "observer.h" |
dacec2a8 | 34 | #include "arch-utils.h" |
c906108c | 35 | |
c906108c | 36 | #include <fcntl.h> |
dbda9972 | 37 | #include "readline/readline.h" |
c906108c SS |
38 | #include "gdb_string.h" |
39 | ||
40 | #include "gdbcore.h" | |
41 | ||
42 | #include <ctype.h> | |
43 | #include "gdb_stat.h" | |
c906108c SS |
44 | |
45 | #include "xcoffsolib.h" | |
46 | ||
a14ed312 | 47 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 48 | |
9a4105ab | 49 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
50 | |
51 | /* Prototypes for local functions */ | |
52 | ||
a14ed312 | 53 | static void exec_close (int); |
c906108c | 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 | ||
69 | /* The Binary File Descriptor handle for the executable file. */ | |
70 | ||
71 | bfd *exec_bfd = NULL; | |
c04ea773 | 72 | long exec_bfd_mtime = 0; |
c906108c SS |
73 | |
74 | /* Whether to open exec and core files read-only or read-write. */ | |
75 | ||
76 | int write_files = 0; | |
920d2a44 AC |
77 | static void |
78 | show_write_files (struct ui_file *file, int from_tty, | |
79 | struct cmd_list_element *c, const char *value) | |
80 | { | |
81 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
82 | value); | |
83 | } | |
84 | ||
c906108c | 85 | |
c906108c SS |
86 | struct vmap *vmap; |
87 | ||
4c42eaff | 88 | static void |
1adeb98a FN |
89 | exec_open (char *args, int from_tty) |
90 | { | |
91 | target_preopen (from_tty); | |
92 | exec_file_attach (args, from_tty); | |
93 | } | |
94 | ||
c906108c | 95 | static void |
fba45db2 | 96 | exec_close (int quitting) |
c906108c SS |
97 | { |
98 | int need_symtab_cleanup = 0; | |
99 | struct vmap *vp, *nxt; | |
c5aa993b JM |
100 | |
101 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
102 | { |
103 | vp = nxt; | |
104 | nxt = vp->nxt; | |
105 | ||
106 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
107 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
108 | ||
c906108c SS |
109 | if (vp->objfile) |
110 | { | |
111 | free_objfile (vp->objfile); | |
112 | need_symtab_cleanup = 1; | |
113 | } | |
114 | else if (vp->bfd != exec_bfd) | |
115 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
116 | if (!bfd_close (vp->bfd)) | |
8a3fe4f8 | 117 | warning (_("cannot close \"%s\": %s"), |
c906108c SS |
118 | vp->name, bfd_errmsg (bfd_get_error ())); |
119 | ||
120 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
121 | be doing here? Should we just free everything in |
122 | vp->objfile->symtabs? Should free_objfile do that? | |
123 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
124 | valid here. */ | |
c906108c | 125 | free_named_symtabs (vp->name); |
b8c9b27d | 126 | xfree (vp); |
c906108c SS |
127 | } |
128 | ||
129 | vmap = NULL; | |
130 | ||
131 | if (exec_bfd) | |
132 | { | |
133 | char *name = bfd_get_filename (exec_bfd); | |
134 | ||
135 | if (!bfd_close (exec_bfd)) | |
8a3fe4f8 | 136 | warning (_("cannot close \"%s\": %s"), |
c906108c | 137 | name, bfd_errmsg (bfd_get_error ())); |
b8c9b27d | 138 | xfree (name); |
c906108c | 139 | exec_bfd = NULL; |
c04ea773 | 140 | exec_bfd_mtime = 0; |
c906108c SS |
141 | } |
142 | ||
143 | if (exec_ops.to_sections) | |
144 | { | |
b8c9b27d | 145 | xfree (exec_ops.to_sections); |
c906108c SS |
146 | exec_ops.to_sections = NULL; |
147 | exec_ops.to_sections_end = NULL; | |
148 | } | |
149 | } | |
150 | ||
1adeb98a FN |
151 | void |
152 | exec_file_clear (int from_tty) | |
153 | { | |
154 | /* Remove exec file. */ | |
155 | unpush_target (&exec_ops); | |
156 | ||
157 | if (from_tty) | |
a3f17187 | 158 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
159 | } |
160 | ||
907083d1 | 161 | /* Set FILENAME as the new exec file. |
c906108c | 162 | |
c5aa993b JM |
163 | This function is intended to be behave essentially the same |
164 | as exec_file_command, except that the latter will detect when | |
165 | a target is being debugged, and will ask the user whether it | |
166 | should be shut down first. (If the answer is "no", then the | |
167 | new file is ignored.) | |
c906108c | 168 | |
c5aa993b JM |
169 | This file is used by exec_file_command, to do the work of opening |
170 | and processing the exec file after any prompting has happened. | |
c906108c | 171 | |
c5aa993b JM |
172 | And, it is used by child_attach, when the attach command was |
173 | given a pid but not a exec pathname, and the attach command could | |
174 | figure out the pathname from the pid. (In this case, we shouldn't | |
175 | ask the user whether the current target should be shut down -- | |
907083d1 | 176 | we're supplying the exec pathname late for good reason.) */ |
c906108c SS |
177 | |
178 | void | |
1adeb98a | 179 | exec_file_attach (char *filename, int from_tty) |
c906108c | 180 | { |
c906108c SS |
181 | /* Remove any previous exec file. */ |
182 | unpush_target (&exec_ops); | |
183 | ||
184 | /* Now open and digest the file the user requested, if any. */ | |
185 | ||
1adeb98a FN |
186 | if (!filename) |
187 | { | |
188 | if (from_tty) | |
a3f17187 | 189 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
190 | |
191 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
192 | } |
193 | else | |
c906108c | 194 | { |
f7545552 | 195 | struct cleanup *cleanups; |
c906108c SS |
196 | char *scratch_pathname; |
197 | int scratch_chan; | |
c5aa993b | 198 | |
014d698b | 199 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
c5aa993b | 200 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, |
c906108c | 201 | &scratch_pathname); |
cfc3008e | 202 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 203 | if (scratch_chan < 0) |
c5aa993b JM |
204 | { |
205 | char *exename = alloca (strlen (filename) + 5); | |
206 | strcat (strcpy (exename, filename), ".exe"); | |
014d698b EZ |
207 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
208 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
209 | &scratch_pathname); | |
c5aa993b | 210 | } |
c906108c SS |
211 | #endif |
212 | if (scratch_chan < 0) | |
213 | perror_with_name (filename); | |
9f76c2cd MM |
214 | exec_bfd = bfd_fopen (scratch_pathname, gnutarget, |
215 | write_files ? FOPEN_RUB : FOPEN_RB, | |
216 | scratch_chan); | |
c906108c SS |
217 | |
218 | if (!exec_bfd) | |
9fe4a216 TT |
219 | { |
220 | close (scratch_chan); | |
221 | error (_("\"%s\": could not open as an executable file: %s"), | |
222 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
223 | } | |
c906108c SS |
224 | |
225 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
c5aa993b JM |
226 | same malloc'd string. However exec_close() will attempt to free it |
227 | via the exec_bfd->name pointer, so we need to make another copy and | |
228 | leave exec_bfd as the new owner of the original copy. */ | |
c2d11a7d | 229 | scratch_pathname = xstrdup (scratch_pathname); |
f7545552 | 230 | cleanups = make_cleanup (xfree, scratch_pathname); |
c5aa993b | 231 | |
c906108c SS |
232 | if (!bfd_check_format (exec_bfd, bfd_object)) |
233 | { | |
234 | /* Make sure to close exec_bfd, or else "run" might try to use | |
235 | it. */ | |
236 | exec_close (0); | |
8a3fe4f8 | 237 | error (_("\"%s\": not in executable format: %s"), |
c906108c SS |
238 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
239 | } | |
240 | ||
241 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 242 | way to accomplish. */ |
52d16ba8 | 243 | #ifdef DEPRECATED_IBM6000_TARGET |
c906108c SS |
244 | /* Setup initial vmap. */ |
245 | ||
246 | map_vmap (exec_bfd, 0); | |
247 | if (vmap == NULL) | |
248 | { | |
249 | /* Make sure to close exec_bfd, or else "run" might try to use | |
250 | it. */ | |
251 | exec_close (0); | |
8a3fe4f8 | 252 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
253 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
254 | } | |
52d16ba8 | 255 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c SS |
256 | |
257 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
c5aa993b | 258 | &exec_ops.to_sections_end)) |
c906108c SS |
259 | { |
260 | /* Make sure to close exec_bfd, or else "run" might try to use | |
261 | it. */ | |
262 | exec_close (0); | |
8a3fe4f8 | 263 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
264 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
265 | } | |
266 | ||
c04ea773 DJ |
267 | exec_bfd_mtime = bfd_get_mtime (exec_bfd); |
268 | ||
c906108c SS |
269 | validate_files (); |
270 | ||
271 | set_gdbarch_from_file (exec_bfd); | |
272 | ||
273 | push_target (&exec_ops); | |
274 | ||
275 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
276 | if (deprecated_exec_file_display_hook) |
277 | (*deprecated_exec_file_display_hook) (filename); | |
f7545552 TT |
278 | |
279 | do_cleanups (cleanups); | |
c906108c | 280 | } |
ce7d4522 | 281 | bfd_cache_close_all (); |
781b42b0 | 282 | observer_notify_executable_changed (); |
c906108c SS |
283 | } |
284 | ||
285 | /* Process the first arg in ARGS as the new exec file. | |
286 | ||
c5aa993b JM |
287 | Note that we have to explicitly ignore additional args, since we can |
288 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
289 | which can take multiple args. |
290 | ||
291 | If ARGS is NULL, we just want to close the exec file. */ | |
c906108c | 292 | |
1adeb98a | 293 | static void |
fba45db2 | 294 | exec_file_command (char *args, int from_tty) |
c906108c | 295 | { |
1adeb98a FN |
296 | char **argv; |
297 | char *filename; | |
4c42eaff DJ |
298 | |
299 | if (from_tty && target_has_execution | |
300 | && !query (_("A program is being debugged already.\n" | |
301 | "Are you sure you want to change the file? "))) | |
302 | error (_("File not changed.")); | |
1adeb98a FN |
303 | |
304 | if (args) | |
305 | { | |
f7545552 TT |
306 | struct cleanup *cleanups; |
307 | ||
1adeb98a FN |
308 | /* Scan through the args and pick up the first non option arg |
309 | as the filename. */ | |
310 | ||
d1a41061 | 311 | argv = gdb_buildargv (args); |
f7545552 | 312 | cleanups = make_cleanup_freeargv (argv); |
1adeb98a FN |
313 | |
314 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
315 | {; | |
316 | } | |
317 | if (*argv == NULL) | |
8a3fe4f8 | 318 | error (_("No executable file name was specified")); |
1adeb98a FN |
319 | |
320 | filename = tilde_expand (*argv); | |
321 | make_cleanup (xfree, filename); | |
322 | exec_file_attach (filename, from_tty); | |
f7545552 TT |
323 | |
324 | do_cleanups (cleanups); | |
1adeb98a FN |
325 | } |
326 | else | |
327 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
328 | } |
329 | ||
330 | /* Set both the exec file and the symbol file, in one command. | |
331 | What a novelty. Why did GDB go through four major releases before this | |
332 | command was added? */ | |
333 | ||
334 | static void | |
fba45db2 | 335 | file_command (char *arg, int from_tty) |
c906108c SS |
336 | { |
337 | /* FIXME, if we lose on reading the symbol file, we should revert | |
338 | the exec file, but that's rough. */ | |
339 | exec_file_command (arg, from_tty); | |
340 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
341 | if (deprecated_file_changed_hook) |
342 | deprecated_file_changed_hook (arg); | |
c906108c | 343 | } |
c906108c | 344 | \f |
c5aa993b | 345 | |
c906108c SS |
346 | /* Locate all mappable sections of a BFD file. |
347 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
348 | we cast it back to its proper type. */ | |
349 | ||
350 | static void | |
7be0c536 AC |
351 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
352 | void *table_pp_char) | |
c906108c | 353 | { |
c5aa993b | 354 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
355 | flagword aflag; |
356 | ||
0f5d55d8 JB |
357 | /* Check the section flags, but do not discard zero-length sections, since |
358 | some symbols may still be attached to this section. For instance, we | |
359 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
360 | section to which a symbol named "_end" was attached. The address | |
361 | of this symbol still needs to be relocated. */ | |
c906108c SS |
362 | aflag = bfd_get_section_flags (abfd, asect); |
363 | if (!(aflag & SEC_ALLOC)) | |
364 | return; | |
0f5d55d8 | 365 | |
c906108c SS |
366 | (*table_pp)->bfd = abfd; |
367 | (*table_pp)->the_bfd_section = asect; | |
368 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
369 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
370 | (*table_pp)++; | |
371 | } | |
372 | ||
373 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
374 | Returns 0 if OK, 1 on error. */ | |
375 | ||
376 | int | |
7be0c536 | 377 | build_section_table (struct bfd *some_bfd, struct section_table **start, |
fba45db2 | 378 | struct section_table **end) |
c906108c SS |
379 | { |
380 | unsigned count; | |
381 | ||
382 | count = bfd_count_sections (some_bfd); | |
383 | if (*start) | |
b8c9b27d | 384 | xfree (* start); |
c906108c SS |
385 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
386 | *end = *start; | |
c5aa993b | 387 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 388 | if (*end > *start + count) |
e2e0b3e5 | 389 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
390 | /* We could realloc the table, but it probably loses for most files. */ |
391 | return 0; | |
392 | } | |
393 | \f | |
394 | static void | |
7be0c536 | 395 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
396 | { |
397 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
398 | struct vmap *vp; | |
399 | ||
400 | vp = vmap_bfd->pvmap; | |
401 | ||
402 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
403 | return; | |
404 | ||
dc6a2ca4 | 405 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
406 | { |
407 | vp->tstart = bfd_section_vma (abfd, sect); | |
408 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
409 | vp->tvma = bfd_section_vma (abfd, sect); | |
410 | vp->toffs = sect->filepos; | |
411 | } | |
dc6a2ca4 | 412 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
413 | { |
414 | vp->dstart = bfd_section_vma (abfd, sect); | |
415 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
416 | vp->dvma = bfd_section_vma (abfd, sect); | |
417 | } | |
418 | /* Silently ignore other types of sections. (FIXME?) */ | |
419 | } | |
420 | ||
421 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
422 | Return the new vmap. */ | |
423 | ||
424 | struct vmap * | |
fba45db2 | 425 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
426 | { |
427 | struct vmap_and_bfd vmap_bfd; | |
428 | struct vmap *vp, **vpp; | |
429 | ||
430 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
431 | memset ((char *) vp, '\0', sizeof (*vp)); | |
432 | vp->nxt = 0; | |
433 | vp->bfd = abfd; | |
434 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
435 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 436 | |
c906108c SS |
437 | vmap_bfd.pbfd = arch; |
438 | vmap_bfd.pvmap = vp; | |
439 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
440 | ||
441 | /* Find the end of the list and append. */ | |
442 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
443 | ; | |
444 | *vpp = vp; | |
445 | ||
446 | return vp; | |
447 | } | |
448 | \f | |
449 | /* Read or write the exec file. | |
450 | ||
451 | Args are address within a BFD file, address within gdb address-space, | |
452 | length, and a flag indicating whether to read or write. | |
453 | ||
454 | Result is a length: | |
455 | ||
c5aa993b JM |
456 | 0: We cannot handle this address and length. |
457 | > 0: We have handled N bytes starting at this address. | |
458 | (If N == length, we did it all.) We might be able | |
459 | to handle more bytes beyond this length, but no | |
460 | promises. | |
461 | < 0: We cannot handle this address, but if somebody | |
462 | else handles (-N) bytes, we can start from there. | |
c906108c | 463 | |
c5aa993b JM |
464 | The same routine is used to handle both core and exec files; |
465 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
466 | |
467 | int | |
1b0ba102 AC |
468 | xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
469 | struct mem_attrib *attrib, struct target_ops *target) | |
c906108c | 470 | { |
020cc13c | 471 | int res; |
c906108c SS |
472 | struct section_table *p; |
473 | CORE_ADDR nextsectaddr, memend; | |
714835d5 | 474 | struct obj_section *section = NULL; |
c906108c SS |
475 | |
476 | if (len <= 0) | |
e2e0b3e5 | 477 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
478 | |
479 | if (overlay_debugging) | |
480 | { | |
481 | section = find_pc_overlay (memaddr); | |
482 | if (pc_in_unmapped_range (memaddr, section)) | |
483 | memaddr = overlay_mapped_address (memaddr, section); | |
484 | } | |
485 | ||
486 | memend = memaddr + len; | |
c906108c SS |
487 | nextsectaddr = memend; |
488 | ||
c906108c SS |
489 | for (p = target->to_sections; p < target->to_sections_end; p++) |
490 | { | |
714835d5 UW |
491 | if (overlay_debugging && section |
492 | && strcmp (section->the_bfd_section->name, | |
493 | p->the_bfd_section->name) != 0) | |
c5aa993b | 494 | continue; /* not the section we need */ |
c906108c | 495 | if (memaddr >= p->addr) |
3db26b01 JB |
496 | { |
497 | if (memend <= p->endaddr) | |
498 | { | |
499 | /* Entire transfer is within this section. */ | |
85302095 AC |
500 | if (write) |
501 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
502 | myaddr, memaddr - p->addr, | |
503 | len); | |
504 | else | |
505 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
506 | myaddr, memaddr - p->addr, | |
507 | len); | |
3db26b01 JB |
508 | return (res != 0) ? len : 0; |
509 | } | |
510 | else if (memaddr >= p->endaddr) | |
511 | { | |
512 | /* This section ends before the transfer starts. */ | |
513 | continue; | |
514 | } | |
515 | else | |
516 | { | |
517 | /* This section overlaps the transfer. Just do half. */ | |
518 | len = p->endaddr - memaddr; | |
85302095 AC |
519 | if (write) |
520 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
521 | myaddr, memaddr - p->addr, | |
522 | len); | |
523 | else | |
524 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
525 | myaddr, memaddr - p->addr, | |
526 | len); | |
3db26b01 JB |
527 | return (res != 0) ? len : 0; |
528 | } | |
529 | } | |
c906108c SS |
530 | else |
531 | nextsectaddr = min (nextsectaddr, p->addr); | |
532 | } | |
533 | ||
534 | if (nextsectaddr >= memend) | |
c5aa993b | 535 | return 0; /* We can't help */ |
c906108c | 536 | else |
c5aa993b | 537 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 538 | } |
c906108c | 539 | \f |
c5aa993b | 540 | |
c906108c | 541 | void |
fba45db2 | 542 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
543 | { |
544 | struct section_table *p; | |
17a912b6 | 545 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
ed49a04f | 546 | int wid = gdbarch_addr_bit (gdbarch_from_bfd (abfd)) <= 32 ? 8 : 16; |
c906108c | 547 | |
c5aa993b | 548 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 549 | wrap_here (" "); |
a3f17187 | 550 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c | 551 | if (abfd == exec_bfd) |
944f08ab JB |
552 | printf_filtered (_("\tEntry point: %s\n"), |
553 | paddress (bfd_get_start_address (abfd))); | |
c906108c SS |
554 | for (p = t->to_sections; p < t->to_sections_end; p++) |
555 | { | |
bb599908 PH |
556 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
557 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
558 | |
559 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
560 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
561 | since most output will then be much wider than necessary. It | |
562 | may make sense to test the size of the file and choose the | |
563 | format string accordingly. */ | |
a3f17187 | 564 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
565 | if (info_verbose) |
566 | printf_filtered (" @ %s", | |
bb599908 | 567 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
c906108c SS |
568 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
569 | if (p->bfd != abfd) | |
a3f17187 | 570 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
571 | printf_filtered ("\n"); |
572 | } | |
573 | } | |
574 | ||
575 | static void | |
fba45db2 | 576 | exec_files_info (struct target_ops *t) |
c906108c SS |
577 | { |
578 | print_section_info (t, exec_bfd); | |
579 | ||
580 | if (vmap) | |
581 | { | |
582 | struct vmap *vp; | |
583 | ||
a3f17187 | 584 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e SS |
585 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
586 | strlen_paddr (), "tstart", | |
587 | strlen_paddr (), "tend", | |
588 | strlen_paddr (), "dstart", | |
589 | strlen_paddr (), "dend", | |
590 | "section", | |
c5aa993b JM |
591 | "file(member)"); |
592 | ||
593 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
594 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
595 | paddr (vp->tstart), | |
596 | paddr (vp->tend), | |
597 | paddr (vp->dstart), | |
598 | paddr (vp->dend), | |
599 | vp->name, | |
c5aa993b JM |
600 | *vp->member ? "(" : "", vp->member, |
601 | *vp->member ? ")" : ""); | |
c906108c SS |
602 | } |
603 | } | |
604 | ||
605 | static void | |
fba45db2 | 606 | set_section_command (char *args, int from_tty) |
c906108c SS |
607 | { |
608 | struct section_table *p; | |
609 | char *secname; | |
610 | unsigned seclen; | |
611 | unsigned long secaddr; | |
612 | char secprint[100]; | |
613 | long offset; | |
614 | ||
615 | if (args == 0) | |
8a3fe4f8 | 616 | error (_("Must specify section name and its virtual address")); |
c906108c SS |
617 | |
618 | /* Parse out section name */ | |
c5aa993b | 619 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
620 | seclen = args - secname; |
621 | ||
622 | /* Parse out new virtual address */ | |
623 | secaddr = parse_and_eval_address (args); | |
624 | ||
c5aa993b JM |
625 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
626 | { | |
627 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
628 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
629 | { | |
630 | offset = secaddr - p->addr; | |
631 | p->addr += offset; | |
632 | p->endaddr += offset; | |
633 | if (from_tty) | |
634 | exec_files_info (&exec_ops); | |
635 | return; | |
636 | } | |
c906108c | 637 | } |
c906108c SS |
638 | if (seclen >= sizeof (secprint)) |
639 | seclen = sizeof (secprint) - 1; | |
640 | strncpy (secprint, secname, seclen); | |
641 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 642 | error (_("Section %s not found"), secprint); |
c906108c SS |
643 | } |
644 | ||
30510692 DJ |
645 | /* If we can find a section in FILENAME with BFD index INDEX, adjust |
646 | it to ADDRESS. */ | |
c1bd25fd DJ |
647 | |
648 | void | |
649 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
650 | { | |
651 | struct section_table *p; | |
652 | ||
653 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) | |
654 | { | |
655 | if (strcmp (filename, p->bfd->filename) == 0 | |
30510692 | 656 | && index == p->the_bfd_section->index) |
c1bd25fd | 657 | { |
30510692 | 658 | p->endaddr += address - p->addr; |
c1bd25fd | 659 | p->addr = address; |
c1bd25fd DJ |
660 | } |
661 | } | |
662 | } | |
663 | ||
c906108c SS |
664 | /* If mourn is being called in all the right places, this could be say |
665 | `gdb internal error' (since generic_mourn calls | |
666 | breakpoint_init_inferior). */ | |
667 | ||
668 | static int | |
8181d85f | 669 | ignore (struct bp_target_info *bp_tgt) |
c906108c SS |
670 | { |
671 | return 0; | |
672 | } | |
673 | ||
be4d1333 MS |
674 | /* Find mapped memory. */ |
675 | ||
676 | extern void | |
677 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
678 | unsigned long, | |
679 | int, int, int, | |
680 | void *), | |
681 | void *)) | |
682 | { | |
683 | exec_ops.to_find_memory_regions = func; | |
684 | } | |
685 | ||
686 | static char *exec_make_note_section (bfd *, int *); | |
687 | ||
c906108c SS |
688 | /* Fill in the exec file target vector. Very few entries need to be |
689 | defined. */ | |
690 | ||
be4d1333 | 691 | static void |
fba45db2 | 692 | init_exec_ops (void) |
c906108c SS |
693 | { |
694 | exec_ops.to_shortname = "exec"; | |
695 | exec_ops.to_longname = "Local exec file"; | |
696 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
697 | Specify the filename of the executable file."; | |
1adeb98a | 698 | exec_ops.to_open = exec_open; |
c906108c SS |
699 | exec_ops.to_close = exec_close; |
700 | exec_ops.to_attach = find_default_attach; | |
c8e73a31 | 701 | exec_ops.deprecated_xfer_memory = xfer_memory; |
c906108c SS |
702 | exec_ops.to_files_info = exec_files_info; |
703 | exec_ops.to_insert_breakpoint = ignore; | |
704 | exec_ops.to_remove_breakpoint = ignore; | |
705 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
706 | exec_ops.to_stratum = file_stratum; |
707 | exec_ops.to_has_memory = 1; | |
be4d1333 | 708 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 709 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
710 | } |
711 | ||
712 | void | |
fba45db2 | 713 | _initialize_exec (void) |
c906108c SS |
714 | { |
715 | struct cmd_list_element *c; | |
716 | ||
717 | init_exec_ops (); | |
718 | ||
719 | if (!dbx_commands) | |
720 | { | |
1a966eab AC |
721 | c = add_cmd ("file", class_files, file_command, _("\ |
722 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
723 | It is read for its symbols, for getting the contents of pure memory,\n\ |
724 | and it is the program executed when you use the `run' command.\n\ | |
725 | If FILE cannot be found as specified, your execution directory path\n\ | |
726 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 727 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 728 | set_cmd_completer (c, filename_completer); |
c906108c SS |
729 | } |
730 | ||
1a966eab AC |
731 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
732 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
733 | If FILE cannot be found as specified, your execution directory path\n\ |
734 | is searched for a command of that name.\n\ | |
1a966eab | 735 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 736 | set_cmd_completer (c, filename_completer); |
c906108c | 737 | |
1bedd215 AC |
738 | add_com ("section", class_files, set_section_command, _("\ |
739 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
740 | This can be used if the exec file does not contain section addresses,\n\ |
741 | (such as in the a.out format), or when the addresses specified in the\n\ | |
742 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 743 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 744 | |
5bf193a2 AC |
745 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
746 | Set writing into executable and core files."), _("\ | |
747 | Show writing into executable and core files."), NULL, | |
748 | NULL, | |
920d2a44 | 749 | show_write_files, |
5bf193a2 | 750 | &setlist, &showlist); |
c5aa993b | 751 | |
c906108c SS |
752 | add_target (&exec_ops); |
753 | } | |
be4d1333 MS |
754 | |
755 | static char * | |
756 | exec_make_note_section (bfd *obfd, int *note_size) | |
757 | { | |
8a3fe4f8 | 758 | error (_("Can't create a corefile")); |
be4d1333 | 759 | } |