Commit | Line | Data |
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c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d | 2 | |
6aba47ca DJ |
3 | Copyright (C) 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
4 | 1998, 1999, 2000, 2001, 2002, 2003, 2007 Free Software Foundation, Inc. | |
c906108c | 5 | |
c5aa993b | 6 | This file is part of GDB. |
c906108c | 7 | |
c5aa993b JM |
8 | This program is free software; you can redistribute it and/or modify |
9 | it under the terms of the GNU General Public License as published by | |
a9762ec7 | 10 | the Free Software Foundation; either version 3 of the License, or |
c5aa993b | 11 | (at your option) any later version. |
c906108c | 12 | |
c5aa993b JM |
13 | This program is distributed in the hope that it will be useful, |
14 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
15 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
16 | GNU General Public License for more details. | |
c906108c | 17 | |
c5aa993b | 18 | You should have received a copy of the GNU General Public License |
a9762ec7 | 19 | along with this program. If not, see <http://www.gnu.org/licenses/>. */ |
c906108c SS |
20 | |
21 | #include "defs.h" | |
22 | #include "frame.h" | |
23 | #include "inferior.h" | |
24 | #include "target.h" | |
25 | #include "gdbcmd.h" | |
26 | #include "language.h" | |
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" |
c906108c | 33 | |
c906108c | 34 | #include <fcntl.h> |
dbda9972 | 35 | #include "readline/readline.h" |
c906108c SS |
36 | #include "gdb_string.h" |
37 | ||
38 | #include "gdbcore.h" | |
39 | ||
40 | #include <ctype.h> | |
41 | #include "gdb_stat.h" | |
c906108c SS |
42 | |
43 | #include "xcoffsolib.h" | |
44 | ||
a14ed312 | 45 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 46 | |
9a4105ab | 47 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
48 | |
49 | /* Prototypes for local functions */ | |
50 | ||
a14ed312 | 51 | static void exec_close (int); |
c906108c | 52 | |
a14ed312 | 53 | static void file_command (char *, int); |
c906108c | 54 | |
a14ed312 | 55 | static void set_section_command (char *, int); |
c906108c | 56 | |
a14ed312 | 57 | static void exec_files_info (struct target_ops *); |
c906108c | 58 | |
a14ed312 | 59 | static void init_exec_ops (void); |
c906108c | 60 | |
a14ed312 | 61 | void _initialize_exec (void); |
c906108c | 62 | |
c906108c SS |
63 | /* The target vector for executable files. */ |
64 | ||
65 | struct target_ops exec_ops; | |
66 | ||
67 | /* The Binary File Descriptor handle for the executable file. */ | |
68 | ||
69 | bfd *exec_bfd = NULL; | |
70 | ||
71 | /* Whether to open exec and core files read-only or read-write. */ | |
72 | ||
73 | int write_files = 0; | |
920d2a44 AC |
74 | static void |
75 | show_write_files (struct ui_file *file, int from_tty, | |
76 | struct cmd_list_element *c, const char *value) | |
77 | { | |
78 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
79 | value); | |
80 | } | |
81 | ||
c906108c | 82 | |
c906108c SS |
83 | struct vmap *vmap; |
84 | ||
4c42eaff | 85 | static void |
1adeb98a FN |
86 | exec_open (char *args, int from_tty) |
87 | { | |
88 | target_preopen (from_tty); | |
89 | exec_file_attach (args, from_tty); | |
90 | } | |
91 | ||
c906108c | 92 | static void |
fba45db2 | 93 | exec_close (int quitting) |
c906108c SS |
94 | { |
95 | int need_symtab_cleanup = 0; | |
96 | struct vmap *vp, *nxt; | |
c5aa993b JM |
97 | |
98 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
99 | { |
100 | vp = nxt; | |
101 | nxt = vp->nxt; | |
102 | ||
103 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
104 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
105 | ||
c906108c SS |
106 | if (vp->objfile) |
107 | { | |
108 | free_objfile (vp->objfile); | |
109 | need_symtab_cleanup = 1; | |
110 | } | |
111 | else if (vp->bfd != exec_bfd) | |
112 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
113 | if (!bfd_close (vp->bfd)) | |
8a3fe4f8 | 114 | warning (_("cannot close \"%s\": %s"), |
c906108c SS |
115 | vp->name, bfd_errmsg (bfd_get_error ())); |
116 | ||
117 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
118 | be doing here? Should we just free everything in |
119 | vp->objfile->symtabs? Should free_objfile do that? | |
120 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
121 | valid here. */ | |
c906108c | 122 | free_named_symtabs (vp->name); |
b8c9b27d | 123 | xfree (vp); |
c906108c SS |
124 | } |
125 | ||
126 | vmap = NULL; | |
127 | ||
128 | if (exec_bfd) | |
129 | { | |
130 | char *name = bfd_get_filename (exec_bfd); | |
131 | ||
132 | if (!bfd_close (exec_bfd)) | |
8a3fe4f8 | 133 | warning (_("cannot close \"%s\": %s"), |
c906108c | 134 | name, bfd_errmsg (bfd_get_error ())); |
b8c9b27d | 135 | xfree (name); |
c906108c SS |
136 | exec_bfd = NULL; |
137 | } | |
138 | ||
139 | if (exec_ops.to_sections) | |
140 | { | |
b8c9b27d | 141 | xfree (exec_ops.to_sections); |
c906108c SS |
142 | exec_ops.to_sections = NULL; |
143 | exec_ops.to_sections_end = NULL; | |
144 | } | |
145 | } | |
146 | ||
1adeb98a FN |
147 | void |
148 | exec_file_clear (int from_tty) | |
149 | { | |
150 | /* Remove exec file. */ | |
151 | unpush_target (&exec_ops); | |
152 | ||
153 | if (from_tty) | |
a3f17187 | 154 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
155 | } |
156 | ||
c906108c SS |
157 | /* Process the first arg in ARGS as the new exec file. |
158 | ||
c5aa993b JM |
159 | This function is intended to be behave essentially the same |
160 | as exec_file_command, except that the latter will detect when | |
161 | a target is being debugged, and will ask the user whether it | |
162 | should be shut down first. (If the answer is "no", then the | |
163 | new file is ignored.) | |
c906108c | 164 | |
c5aa993b JM |
165 | This file is used by exec_file_command, to do the work of opening |
166 | and processing the exec file after any prompting has happened. | |
c906108c | 167 | |
c5aa993b JM |
168 | And, it is used by child_attach, when the attach command was |
169 | given a pid but not a exec pathname, and the attach command could | |
170 | figure out the pathname from the pid. (In this case, we shouldn't | |
171 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
172 | we're supplying the exec pathname late for good reason.) |
173 | ||
174 | ARGS is assumed to be the filename. */ | |
c906108c SS |
175 | |
176 | void | |
1adeb98a | 177 | exec_file_attach (char *filename, int from_tty) |
c906108c | 178 | { |
c906108c SS |
179 | /* Remove any previous exec file. */ |
180 | unpush_target (&exec_ops); | |
181 | ||
182 | /* Now open and digest the file the user requested, if any. */ | |
183 | ||
1adeb98a FN |
184 | if (!filename) |
185 | { | |
186 | if (from_tty) | |
a3f17187 | 187 | printf_unfiltered (_("No executable file now.\n")); |
7a107747 DJ |
188 | |
189 | set_gdbarch_from_file (NULL); | |
1adeb98a FN |
190 | } |
191 | else | |
c906108c SS |
192 | { |
193 | char *scratch_pathname; | |
194 | int scratch_chan; | |
c5aa993b | 195 | |
014d698b | 196 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
c5aa993b | 197 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, |
c906108c | 198 | &scratch_pathname); |
cfc3008e | 199 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 200 | if (scratch_chan < 0) |
c5aa993b JM |
201 | { |
202 | char *exename = alloca (strlen (filename) + 5); | |
203 | strcat (strcpy (exename, filename), ".exe"); | |
014d698b EZ |
204 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
205 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
206 | &scratch_pathname); | |
c5aa993b | 207 | } |
c906108c SS |
208 | #endif |
209 | if (scratch_chan < 0) | |
210 | perror_with_name (filename); | |
9f76c2cd MM |
211 | exec_bfd = bfd_fopen (scratch_pathname, gnutarget, |
212 | write_files ? FOPEN_RUB : FOPEN_RB, | |
213 | scratch_chan); | |
c906108c SS |
214 | |
215 | if (!exec_bfd) | |
8a3fe4f8 | 216 | error (_("\"%s\": could not open as an executable file: %s"), |
c906108c SS |
217 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
218 | ||
219 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
c5aa993b JM |
220 | same malloc'd string. However exec_close() will attempt to free it |
221 | via the exec_bfd->name pointer, so we need to make another copy and | |
222 | leave exec_bfd as the new owner of the original copy. */ | |
c2d11a7d | 223 | scratch_pathname = xstrdup (scratch_pathname); |
b8c9b27d | 224 | make_cleanup (xfree, scratch_pathname); |
c5aa993b | 225 | |
c906108c SS |
226 | if (!bfd_check_format (exec_bfd, bfd_object)) |
227 | { | |
228 | /* Make sure to close exec_bfd, or else "run" might try to use | |
229 | it. */ | |
230 | exec_close (0); | |
8a3fe4f8 | 231 | error (_("\"%s\": not in executable format: %s"), |
c906108c SS |
232 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
233 | } | |
234 | ||
235 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 236 | way to accomplish. */ |
52d16ba8 | 237 | #ifdef DEPRECATED_IBM6000_TARGET |
c906108c SS |
238 | /* Setup initial vmap. */ |
239 | ||
240 | map_vmap (exec_bfd, 0); | |
241 | if (vmap == NULL) | |
242 | { | |
243 | /* Make sure to close exec_bfd, or else "run" might try to use | |
244 | it. */ | |
245 | exec_close (0); | |
8a3fe4f8 | 246 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
247 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
248 | } | |
52d16ba8 | 249 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c SS |
250 | |
251 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
c5aa993b | 252 | &exec_ops.to_sections_end)) |
c906108c SS |
253 | { |
254 | /* Make sure to close exec_bfd, or else "run" might try to use | |
255 | it. */ | |
256 | exec_close (0); | |
8a3fe4f8 | 257 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
258 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
259 | } | |
260 | ||
c906108c SS |
261 | validate_files (); |
262 | ||
263 | set_gdbarch_from_file (exec_bfd); | |
264 | ||
265 | push_target (&exec_ops); | |
266 | ||
267 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
268 | if (deprecated_exec_file_display_hook) |
269 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 270 | } |
ce7d4522 | 271 | bfd_cache_close_all (); |
ea53e89f | 272 | observer_notify_executable_changed (NULL); |
c906108c SS |
273 | } |
274 | ||
275 | /* Process the first arg in ARGS as the new exec file. | |
276 | ||
c5aa993b JM |
277 | Note that we have to explicitly ignore additional args, since we can |
278 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
279 | which can take multiple args. |
280 | ||
281 | If ARGS is NULL, we just want to close the exec file. */ | |
c906108c | 282 | |
1adeb98a | 283 | static void |
fba45db2 | 284 | exec_file_command (char *args, int from_tty) |
c906108c | 285 | { |
1adeb98a FN |
286 | char **argv; |
287 | char *filename; | |
4c42eaff DJ |
288 | |
289 | if (from_tty && target_has_execution | |
290 | && !query (_("A program is being debugged already.\n" | |
291 | "Are you sure you want to change the file? "))) | |
292 | error (_("File not changed.")); | |
1adeb98a FN |
293 | |
294 | if (args) | |
295 | { | |
296 | /* Scan through the args and pick up the first non option arg | |
297 | as the filename. */ | |
298 | ||
299 | argv = buildargv (args); | |
300 | if (argv == NULL) | |
301 | nomem (0); | |
302 | ||
303 | make_cleanup_freeargv (argv); | |
304 | ||
305 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
306 | {; | |
307 | } | |
308 | if (*argv == NULL) | |
8a3fe4f8 | 309 | error (_("No executable file name was specified")); |
1adeb98a FN |
310 | |
311 | filename = tilde_expand (*argv); | |
312 | make_cleanup (xfree, filename); | |
313 | exec_file_attach (filename, from_tty); | |
314 | } | |
315 | else | |
316 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
317 | } |
318 | ||
319 | /* Set both the exec file and the symbol file, in one command. | |
320 | What a novelty. Why did GDB go through four major releases before this | |
321 | command was added? */ | |
322 | ||
323 | static void | |
fba45db2 | 324 | file_command (char *arg, int from_tty) |
c906108c SS |
325 | { |
326 | /* FIXME, if we lose on reading the symbol file, we should revert | |
327 | the exec file, but that's rough. */ | |
328 | exec_file_command (arg, from_tty); | |
329 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
330 | if (deprecated_file_changed_hook) |
331 | deprecated_file_changed_hook (arg); | |
c906108c | 332 | } |
c906108c | 333 | \f |
c5aa993b | 334 | |
c906108c SS |
335 | /* Locate all mappable sections of a BFD file. |
336 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
337 | we cast it back to its proper type. */ | |
338 | ||
339 | static void | |
7be0c536 AC |
340 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
341 | void *table_pp_char) | |
c906108c | 342 | { |
c5aa993b | 343 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
344 | flagword aflag; |
345 | ||
0f5d55d8 JB |
346 | /* Check the section flags, but do not discard zero-length sections, since |
347 | some symbols may still be attached to this section. For instance, we | |
348 | encountered on sparc-solaris 2.10 a shared library with an empty .bss | |
349 | section to which a symbol named "_end" was attached. The address | |
350 | of this symbol still needs to be relocated. */ | |
c906108c SS |
351 | aflag = bfd_get_section_flags (abfd, asect); |
352 | if (!(aflag & SEC_ALLOC)) | |
353 | return; | |
0f5d55d8 | 354 | |
c906108c SS |
355 | (*table_pp)->bfd = abfd; |
356 | (*table_pp)->the_bfd_section = asect; | |
357 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
358 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
359 | (*table_pp)++; | |
360 | } | |
361 | ||
362 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
363 | Returns 0 if OK, 1 on error. */ | |
364 | ||
365 | int | |
7be0c536 | 366 | build_section_table (struct bfd *some_bfd, struct section_table **start, |
fba45db2 | 367 | struct section_table **end) |
c906108c SS |
368 | { |
369 | unsigned count; | |
370 | ||
371 | count = bfd_count_sections (some_bfd); | |
372 | if (*start) | |
b8c9b27d | 373 | xfree (* start); |
c906108c SS |
374 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
375 | *end = *start; | |
c5aa993b | 376 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 377 | if (*end > *start + count) |
e2e0b3e5 | 378 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
379 | /* We could realloc the table, but it probably loses for most files. */ |
380 | return 0; | |
381 | } | |
382 | \f | |
383 | static void | |
7be0c536 | 384 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
385 | { |
386 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
387 | struct vmap *vp; | |
388 | ||
389 | vp = vmap_bfd->pvmap; | |
390 | ||
391 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
392 | return; | |
393 | ||
dc6a2ca4 | 394 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
395 | { |
396 | vp->tstart = bfd_section_vma (abfd, sect); | |
397 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
398 | vp->tvma = bfd_section_vma (abfd, sect); | |
399 | vp->toffs = sect->filepos; | |
400 | } | |
dc6a2ca4 | 401 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
402 | { |
403 | vp->dstart = bfd_section_vma (abfd, sect); | |
404 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
405 | vp->dvma = bfd_section_vma (abfd, sect); | |
406 | } | |
407 | /* Silently ignore other types of sections. (FIXME?) */ | |
408 | } | |
409 | ||
410 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
411 | Return the new vmap. */ | |
412 | ||
413 | struct vmap * | |
fba45db2 | 414 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
415 | { |
416 | struct vmap_and_bfd vmap_bfd; | |
417 | struct vmap *vp, **vpp; | |
418 | ||
419 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
420 | memset ((char *) vp, '\0', sizeof (*vp)); | |
421 | vp->nxt = 0; | |
422 | vp->bfd = abfd; | |
423 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
424 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 425 | |
c906108c SS |
426 | vmap_bfd.pbfd = arch; |
427 | vmap_bfd.pvmap = vp; | |
428 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
429 | ||
430 | /* Find the end of the list and append. */ | |
431 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
432 | ; | |
433 | *vpp = vp; | |
434 | ||
435 | return vp; | |
436 | } | |
437 | \f | |
438 | /* Read or write the exec file. | |
439 | ||
440 | Args are address within a BFD file, address within gdb address-space, | |
441 | length, and a flag indicating whether to read or write. | |
442 | ||
443 | Result is a length: | |
444 | ||
c5aa993b JM |
445 | 0: We cannot handle this address and length. |
446 | > 0: We have handled N bytes starting at this address. | |
447 | (If N == length, we did it all.) We might be able | |
448 | to handle more bytes beyond this length, but no | |
449 | promises. | |
450 | < 0: We cannot handle this address, but if somebody | |
451 | else handles (-N) bytes, we can start from there. | |
c906108c | 452 | |
c5aa993b JM |
453 | The same routine is used to handle both core and exec files; |
454 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
455 | |
456 | int | |
1b0ba102 AC |
457 | xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
458 | struct mem_attrib *attrib, struct target_ops *target) | |
c906108c | 459 | { |
020cc13c | 460 | int res; |
c906108c SS |
461 | struct section_table *p; |
462 | CORE_ADDR nextsectaddr, memend; | |
88665544 | 463 | asection *section = NULL; |
c906108c SS |
464 | |
465 | if (len <= 0) | |
e2e0b3e5 | 466 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
467 | |
468 | if (overlay_debugging) | |
469 | { | |
470 | section = find_pc_overlay (memaddr); | |
471 | if (pc_in_unmapped_range (memaddr, section)) | |
472 | memaddr = overlay_mapped_address (memaddr, section); | |
473 | } | |
474 | ||
475 | memend = memaddr + len; | |
c906108c SS |
476 | nextsectaddr = memend; |
477 | ||
c906108c SS |
478 | for (p = target->to_sections; p < target->to_sections_end; p++) |
479 | { | |
c7b1adc9 | 480 | if (overlay_debugging && section && |
c906108c | 481 | strcmp (section->name, p->the_bfd_section->name) != 0) |
c5aa993b | 482 | continue; /* not the section we need */ |
c906108c | 483 | if (memaddr >= p->addr) |
3db26b01 JB |
484 | { |
485 | if (memend <= p->endaddr) | |
486 | { | |
487 | /* Entire transfer is within this section. */ | |
85302095 AC |
488 | if (write) |
489 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
490 | myaddr, memaddr - p->addr, | |
491 | len); | |
492 | else | |
493 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
494 | myaddr, memaddr - p->addr, | |
495 | len); | |
3db26b01 JB |
496 | return (res != 0) ? len : 0; |
497 | } | |
498 | else if (memaddr >= p->endaddr) | |
499 | { | |
500 | /* This section ends before the transfer starts. */ | |
501 | continue; | |
502 | } | |
503 | else | |
504 | { | |
505 | /* This section overlaps the transfer. Just do half. */ | |
506 | len = p->endaddr - memaddr; | |
85302095 AC |
507 | if (write) |
508 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
509 | myaddr, memaddr - p->addr, | |
510 | len); | |
511 | else | |
512 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
513 | myaddr, memaddr - p->addr, | |
514 | len); | |
3db26b01 JB |
515 | return (res != 0) ? len : 0; |
516 | } | |
517 | } | |
c906108c SS |
518 | else |
519 | nextsectaddr = min (nextsectaddr, p->addr); | |
520 | } | |
521 | ||
522 | if (nextsectaddr >= memend) | |
c5aa993b | 523 | return 0; /* We can't help */ |
c906108c | 524 | else |
c5aa993b | 525 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 526 | } |
c906108c | 527 | \f |
c5aa993b | 528 | |
c906108c | 529 | void |
fba45db2 | 530 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
531 | { |
532 | struct section_table *p; | |
17a912b6 UW |
533 | /* FIXME: 16 is not wide enough when gdbarch_addr_bit > 64. */ |
534 | int wid = gdbarch_addr_bit (current_gdbarch) <= 32 ? 8 : 16; | |
c906108c | 535 | |
c5aa993b | 536 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 537 | wrap_here (" "); |
a3f17187 | 538 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c SS |
539 | if (abfd == exec_bfd) |
540 | { | |
a3f17187 | 541 | printf_filtered (_("\tEntry point: ")); |
66bf4b3a | 542 | deprecated_print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); |
c906108c SS |
543 | printf_filtered ("\n"); |
544 | } | |
545 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
546 | { | |
bb599908 PH |
547 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
548 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
549 | |
550 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
551 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
552 | since most output will then be much wider than necessary. It | |
553 | may make sense to test the size of the file and choose the | |
554 | format string accordingly. */ | |
a3f17187 | 555 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
556 | if (info_verbose) |
557 | printf_filtered (" @ %s", | |
bb599908 | 558 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
c906108c SS |
559 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
560 | if (p->bfd != abfd) | |
a3f17187 | 561 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
562 | printf_filtered ("\n"); |
563 | } | |
564 | } | |
565 | ||
566 | static void | |
fba45db2 | 567 | exec_files_info (struct target_ops *t) |
c906108c SS |
568 | { |
569 | print_section_info (t, exec_bfd); | |
570 | ||
571 | if (vmap) | |
572 | { | |
573 | struct vmap *vp; | |
574 | ||
a3f17187 | 575 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e SS |
576 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
577 | strlen_paddr (), "tstart", | |
578 | strlen_paddr (), "tend", | |
579 | strlen_paddr (), "dstart", | |
580 | strlen_paddr (), "dend", | |
581 | "section", | |
c5aa993b JM |
582 | "file(member)"); |
583 | ||
584 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
585 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
586 | paddr (vp->tstart), | |
587 | paddr (vp->tend), | |
588 | paddr (vp->dstart), | |
589 | paddr (vp->dend), | |
590 | vp->name, | |
c5aa993b JM |
591 | *vp->member ? "(" : "", vp->member, |
592 | *vp->member ? ")" : ""); | |
c906108c SS |
593 | } |
594 | } | |
595 | ||
0f71a2f6 JM |
596 | /* msnyder 5/21/99: |
597 | exec_set_section_offsets sets the offsets of all the sections | |
598 | in the exec objfile. */ | |
599 | ||
600 | void | |
fba45db2 KB |
601 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
602 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
603 | { |
604 | struct section_table *sect; | |
c5aa993b JM |
605 | |
606 | for (sect = exec_ops.to_sections; | |
607 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
608 | sect++) |
609 | { | |
610 | flagword flags; | |
611 | ||
612 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
613 | ||
614 | if (flags & SEC_CODE) | |
615 | { | |
c5aa993b | 616 | sect->addr += text_off; |
0f71a2f6 JM |
617 | sect->endaddr += text_off; |
618 | } | |
619 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
620 | { | |
c5aa993b | 621 | sect->addr += data_off; |
0f71a2f6 JM |
622 | sect->endaddr += data_off; |
623 | } | |
624 | else if (flags & SEC_ALLOC) | |
625 | { | |
c5aa993b | 626 | sect->addr += bss_off; |
0f71a2f6 JM |
627 | sect->endaddr += bss_off; |
628 | } | |
629 | } | |
630 | } | |
631 | ||
c906108c | 632 | static void |
fba45db2 | 633 | set_section_command (char *args, int from_tty) |
c906108c SS |
634 | { |
635 | struct section_table *p; | |
636 | char *secname; | |
637 | unsigned seclen; | |
638 | unsigned long secaddr; | |
639 | char secprint[100]; | |
640 | long offset; | |
641 | ||
642 | if (args == 0) | |
8a3fe4f8 | 643 | error (_("Must specify section name and its virtual address")); |
c906108c SS |
644 | |
645 | /* Parse out section name */ | |
c5aa993b | 646 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
647 | seclen = args - secname; |
648 | ||
649 | /* Parse out new virtual address */ | |
650 | secaddr = parse_and_eval_address (args); | |
651 | ||
c5aa993b JM |
652 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
653 | { | |
654 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
655 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
656 | { | |
657 | offset = secaddr - p->addr; | |
658 | p->addr += offset; | |
659 | p->endaddr += offset; | |
660 | if (from_tty) | |
661 | exec_files_info (&exec_ops); | |
662 | return; | |
663 | } | |
c906108c | 664 | } |
c906108c SS |
665 | if (seclen >= sizeof (secprint)) |
666 | seclen = sizeof (secprint) - 1; | |
667 | strncpy (secprint, secname, seclen); | |
668 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 669 | error (_("Section %s not found"), secprint); |
c906108c SS |
670 | } |
671 | ||
c1bd25fd DJ |
672 | /* If we can find a section in FILENAME with BFD index INDEX, and the |
673 | user has not assigned an address to it yet (via "set section"), adjust it | |
674 | to ADDRESS. */ | |
675 | ||
676 | void | |
677 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
678 | { | |
679 | struct section_table *p; | |
680 | ||
681 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) | |
682 | { | |
683 | if (strcmp (filename, p->bfd->filename) == 0 | |
684 | && index == p->the_bfd_section->index | |
685 | && p->addr == 0) | |
686 | { | |
687 | p->addr = address; | |
688 | p->endaddr += address; | |
689 | } | |
690 | } | |
691 | } | |
692 | ||
c906108c SS |
693 | /* If mourn is being called in all the right places, this could be say |
694 | `gdb internal error' (since generic_mourn calls | |
695 | breakpoint_init_inferior). */ | |
696 | ||
697 | static int | |
8181d85f | 698 | ignore (struct bp_target_info *bp_tgt) |
c906108c SS |
699 | { |
700 | return 0; | |
701 | } | |
702 | ||
be4d1333 MS |
703 | /* Find mapped memory. */ |
704 | ||
705 | extern void | |
706 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
707 | unsigned long, | |
708 | int, int, int, | |
709 | void *), | |
710 | void *)) | |
711 | { | |
712 | exec_ops.to_find_memory_regions = func; | |
713 | } | |
714 | ||
715 | static char *exec_make_note_section (bfd *, int *); | |
716 | ||
c906108c SS |
717 | /* Fill in the exec file target vector. Very few entries need to be |
718 | defined. */ | |
719 | ||
be4d1333 | 720 | static void |
fba45db2 | 721 | init_exec_ops (void) |
c906108c SS |
722 | { |
723 | exec_ops.to_shortname = "exec"; | |
724 | exec_ops.to_longname = "Local exec file"; | |
725 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
726 | Specify the filename of the executable file."; | |
1adeb98a | 727 | exec_ops.to_open = exec_open; |
c906108c SS |
728 | exec_ops.to_close = exec_close; |
729 | exec_ops.to_attach = find_default_attach; | |
c8e73a31 | 730 | exec_ops.deprecated_xfer_memory = xfer_memory; |
c906108c SS |
731 | exec_ops.to_files_info = exec_files_info; |
732 | exec_ops.to_insert_breakpoint = ignore; | |
733 | exec_ops.to_remove_breakpoint = ignore; | |
734 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
735 | exec_ops.to_stratum = file_stratum; |
736 | exec_ops.to_has_memory = 1; | |
be4d1333 | 737 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 738 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
739 | } |
740 | ||
741 | void | |
fba45db2 | 742 | _initialize_exec (void) |
c906108c SS |
743 | { |
744 | struct cmd_list_element *c; | |
745 | ||
746 | init_exec_ops (); | |
747 | ||
748 | if (!dbx_commands) | |
749 | { | |
1a966eab AC |
750 | c = add_cmd ("file", class_files, file_command, _("\ |
751 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
752 | It is read for its symbols, for getting the contents of pure memory,\n\ |
753 | and it is the program executed when you use the `run' command.\n\ | |
754 | If FILE cannot be found as specified, your execution directory path\n\ | |
755 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 756 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 757 | set_cmd_completer (c, filename_completer); |
c906108c SS |
758 | } |
759 | ||
1a966eab AC |
760 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
761 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
762 | If FILE cannot be found as specified, your execution directory path\n\ |
763 | is searched for a command of that name.\n\ | |
1a966eab | 764 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 765 | set_cmd_completer (c, filename_completer); |
c906108c | 766 | |
1bedd215 AC |
767 | add_com ("section", class_files, set_section_command, _("\ |
768 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
769 | This can be used if the exec file does not contain section addresses,\n\ |
770 | (such as in the a.out format), or when the addresses specified in the\n\ | |
771 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 772 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 773 | |
5bf193a2 AC |
774 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
775 | Set writing into executable and core files."), _("\ | |
776 | Show writing into executable and core files."), NULL, | |
777 | NULL, | |
920d2a44 | 778 | show_write_files, |
5bf193a2 | 779 | &setlist, &showlist); |
c5aa993b | 780 | |
c906108c SS |
781 | add_target (&exec_ops); |
782 | } | |
be4d1333 MS |
783 | |
784 | static char * | |
785 | exec_make_note_section (bfd *obfd, int *note_size) | |
786 | { | |
8a3fe4f8 | 787 | error (_("Can't create a corefile")); |
be4d1333 | 788 | } |