Commit | Line | Data |
---|---|---|
c906108c | 1 | /* Work with executable files, for GDB. |
4646aa9d AC |
2 | |
3 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, | |
4 | 1997, 1998, 1999, 2000, 2001, 2002, 2003 Free Software Foundation, | |
5 | 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 | |
11 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
19 | You should have received a copy of the GNU General Public License |
20 | along with this program; if not, write to the Free Software | |
21 | Foundation, Inc., 59 Temple Place - Suite 330, | |
22 | Boston, MA 02111-1307, USA. */ | |
c906108c SS |
23 | |
24 | #include "defs.h" | |
25 | #include "frame.h" | |
26 | #include "inferior.h" | |
27 | #include "target.h" | |
28 | #include "gdbcmd.h" | |
29 | #include "language.h" | |
30 | #include "symfile.h" | |
31 | #include "objfiles.h" | |
c5f0f3d0 | 32 | #include "completer.h" |
fd0407d6 | 33 | #include "value.h" |
4646aa9d | 34 | #include "exec.h" |
ea53e89f | 35 | #include "observer.h" |
c906108c | 36 | |
c906108c | 37 | #include <fcntl.h> |
dbda9972 | 38 | #include "readline/readline.h" |
c906108c SS |
39 | #include "gdb_string.h" |
40 | ||
41 | #include "gdbcore.h" | |
42 | ||
43 | #include <ctype.h> | |
44 | #include "gdb_stat.h" | |
45 | #ifndef O_BINARY | |
46 | #define O_BINARY 0 | |
47 | #endif | |
48 | ||
49 | #include "xcoffsolib.h" | |
50 | ||
a14ed312 | 51 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 52 | |
9a4105ab | 53 | void (*deprecated_file_changed_hook) (char *); |
c906108c SS |
54 | |
55 | /* Prototypes for local functions */ | |
56 | ||
a14ed312 | 57 | static void exec_close (int); |
c906108c | 58 | |
a14ed312 | 59 | static void file_command (char *, int); |
c906108c | 60 | |
a14ed312 | 61 | static void set_section_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void exec_files_info (struct target_ops *); |
c906108c | 64 | |
5a168c78 | 65 | static int ignore (CORE_ADDR, bfd_byte *); |
c906108c | 66 | |
a14ed312 | 67 | static void init_exec_ops (void); |
c906108c | 68 | |
a14ed312 | 69 | void _initialize_exec (void); |
c906108c | 70 | |
c906108c SS |
71 | /* The target vector for executable files. */ |
72 | ||
73 | struct target_ops exec_ops; | |
74 | ||
75 | /* The Binary File Descriptor handle for the executable file. */ | |
76 | ||
77 | bfd *exec_bfd = NULL; | |
78 | ||
79 | /* Whether to open exec and core files read-only or read-write. */ | |
80 | ||
81 | int write_files = 0; | |
920d2a44 AC |
82 | static void |
83 | show_write_files (struct ui_file *file, int from_tty, | |
84 | struct cmd_list_element *c, const char *value) | |
85 | { | |
86 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
87 | value); | |
88 | } | |
89 | ||
c906108c | 90 | |
c906108c SS |
91 | struct vmap *vmap; |
92 | ||
1adeb98a FN |
93 | void |
94 | exec_open (char *args, int from_tty) | |
95 | { | |
96 | target_preopen (from_tty); | |
97 | exec_file_attach (args, from_tty); | |
98 | } | |
99 | ||
c906108c | 100 | static void |
fba45db2 | 101 | exec_close (int quitting) |
c906108c SS |
102 | { |
103 | int need_symtab_cleanup = 0; | |
104 | struct vmap *vp, *nxt; | |
c5aa993b JM |
105 | |
106 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
107 | { |
108 | vp = nxt; | |
109 | nxt = vp->nxt; | |
110 | ||
111 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
112 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
113 | ||
c906108c SS |
114 | if (vp->objfile) |
115 | { | |
116 | free_objfile (vp->objfile); | |
117 | need_symtab_cleanup = 1; | |
118 | } | |
119 | else if (vp->bfd != exec_bfd) | |
120 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
121 | if (!bfd_close (vp->bfd)) | |
8a3fe4f8 | 122 | warning (_("cannot close \"%s\": %s"), |
c906108c SS |
123 | vp->name, bfd_errmsg (bfd_get_error ())); |
124 | ||
125 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
126 | be doing here? Should we just free everything in |
127 | vp->objfile->symtabs? Should free_objfile do that? | |
128 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
129 | valid here. */ | |
c906108c | 130 | free_named_symtabs (vp->name); |
b8c9b27d | 131 | xfree (vp); |
c906108c SS |
132 | } |
133 | ||
134 | vmap = NULL; | |
135 | ||
136 | if (exec_bfd) | |
137 | { | |
138 | char *name = bfd_get_filename (exec_bfd); | |
139 | ||
140 | if (!bfd_close (exec_bfd)) | |
8a3fe4f8 | 141 | warning (_("cannot close \"%s\": %s"), |
c906108c | 142 | name, bfd_errmsg (bfd_get_error ())); |
b8c9b27d | 143 | xfree (name); |
c906108c SS |
144 | exec_bfd = NULL; |
145 | } | |
146 | ||
147 | if (exec_ops.to_sections) | |
148 | { | |
b8c9b27d | 149 | xfree (exec_ops.to_sections); |
c906108c SS |
150 | exec_ops.to_sections = NULL; |
151 | exec_ops.to_sections_end = NULL; | |
152 | } | |
153 | } | |
154 | ||
1adeb98a FN |
155 | void |
156 | exec_file_clear (int from_tty) | |
157 | { | |
158 | /* Remove exec file. */ | |
159 | unpush_target (&exec_ops); | |
160 | ||
161 | if (from_tty) | |
a3f17187 | 162 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
163 | } |
164 | ||
c906108c SS |
165 | /* Process the first arg in ARGS as the new exec file. |
166 | ||
c5aa993b JM |
167 | This function is intended to be behave essentially the same |
168 | as exec_file_command, except that the latter will detect when | |
169 | a target is being debugged, and will ask the user whether it | |
170 | should be shut down first. (If the answer is "no", then the | |
171 | new file is ignored.) | |
c906108c | 172 | |
c5aa993b JM |
173 | This file is used by exec_file_command, to do the work of opening |
174 | and processing the exec file after any prompting has happened. | |
c906108c | 175 | |
c5aa993b JM |
176 | And, it is used by child_attach, when the attach command was |
177 | given a pid but not a exec pathname, and the attach command could | |
178 | figure out the pathname from the pid. (In this case, we shouldn't | |
179 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
180 | we're supplying the exec pathname late for good reason.) |
181 | ||
182 | ARGS is assumed to be the filename. */ | |
c906108c SS |
183 | |
184 | void | |
1adeb98a | 185 | exec_file_attach (char *filename, int from_tty) |
c906108c | 186 | { |
c906108c SS |
187 | /* Remove any previous exec file. */ |
188 | unpush_target (&exec_ops); | |
189 | ||
190 | /* Now open and digest the file the user requested, if any. */ | |
191 | ||
1adeb98a FN |
192 | if (!filename) |
193 | { | |
194 | if (from_tty) | |
a3f17187 | 195 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
196 | } |
197 | else | |
c906108c SS |
198 | { |
199 | char *scratch_pathname; | |
200 | int scratch_chan; | |
c5aa993b | 201 | |
014d698b | 202 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
c5aa993b | 203 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, |
c906108c | 204 | &scratch_pathname); |
cfc3008e | 205 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 206 | if (scratch_chan < 0) |
c5aa993b JM |
207 | { |
208 | char *exename = alloca (strlen (filename) + 5); | |
209 | strcat (strcpy (exename, filename), ".exe"); | |
014d698b EZ |
210 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
211 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
212 | &scratch_pathname); | |
c5aa993b | 213 | } |
c906108c SS |
214 | #endif |
215 | if (scratch_chan < 0) | |
216 | perror_with_name (filename); | |
9f76c2cd MM |
217 | exec_bfd = bfd_fopen (scratch_pathname, gnutarget, |
218 | write_files ? FOPEN_RUB : FOPEN_RB, | |
219 | scratch_chan); | |
c906108c SS |
220 | |
221 | if (!exec_bfd) | |
8a3fe4f8 | 222 | error (_("\"%s\": could not open as an executable file: %s"), |
c906108c SS |
223 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
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); |
b8c9b27d | 230 | 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 | ||
b9fbf434 AC |
267 | #ifdef DEPRECATED_HPUX_TEXT_END |
268 | DEPRECATED_HPUX_TEXT_END (&exec_ops); | |
269 | #endif | |
c906108c SS |
270 | |
271 | validate_files (); | |
272 | ||
273 | set_gdbarch_from_file (exec_bfd); | |
274 | ||
275 | push_target (&exec_ops); | |
276 | ||
277 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
278 | if (deprecated_exec_file_display_hook) |
279 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 280 | } |
ce7d4522 | 281 | bfd_cache_close_all (); |
ea53e89f | 282 | observer_notify_executable_changed (NULL); |
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; | |
298 | ||
c906108c | 299 | target_preopen (from_tty); |
1adeb98a FN |
300 | |
301 | if (args) | |
302 | { | |
303 | /* Scan through the args and pick up the first non option arg | |
304 | as the filename. */ | |
305 | ||
306 | argv = buildargv (args); | |
307 | if (argv == NULL) | |
308 | nomem (0); | |
309 | ||
310 | make_cleanup_freeargv (argv); | |
311 | ||
312 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
313 | {; | |
314 | } | |
315 | if (*argv == NULL) | |
8a3fe4f8 | 316 | error (_("No executable file name was specified")); |
1adeb98a FN |
317 | |
318 | filename = tilde_expand (*argv); | |
319 | make_cleanup (xfree, filename); | |
320 | exec_file_attach (filename, from_tty); | |
321 | } | |
322 | else | |
323 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
324 | } |
325 | ||
326 | /* Set both the exec file and the symbol file, in one command. | |
327 | What a novelty. Why did GDB go through four major releases before this | |
328 | command was added? */ | |
329 | ||
330 | static void | |
fba45db2 | 331 | file_command (char *arg, int from_tty) |
c906108c SS |
332 | { |
333 | /* FIXME, if we lose on reading the symbol file, we should revert | |
334 | the exec file, but that's rough. */ | |
335 | exec_file_command (arg, from_tty); | |
336 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
337 | if (deprecated_file_changed_hook) |
338 | deprecated_file_changed_hook (arg); | |
c906108c | 339 | } |
c906108c | 340 | \f |
c5aa993b | 341 | |
c906108c SS |
342 | /* Locate all mappable sections of a BFD file. |
343 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
344 | we cast it back to its proper type. */ | |
345 | ||
346 | static void | |
7be0c536 AC |
347 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
348 | void *table_pp_char) | |
c906108c | 349 | { |
c5aa993b | 350 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
351 | flagword aflag; |
352 | ||
353 | aflag = bfd_get_section_flags (abfd, asect); | |
354 | if (!(aflag & SEC_ALLOC)) | |
355 | return; | |
356 | if (0 == bfd_section_size (abfd, asect)) | |
357 | return; | |
358 | (*table_pp)->bfd = abfd; | |
359 | (*table_pp)->the_bfd_section = asect; | |
360 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
361 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
362 | (*table_pp)++; | |
363 | } | |
364 | ||
365 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
366 | Returns 0 if OK, 1 on error. */ | |
367 | ||
368 | int | |
7be0c536 | 369 | build_section_table (struct bfd *some_bfd, struct section_table **start, |
fba45db2 | 370 | struct section_table **end) |
c906108c SS |
371 | { |
372 | unsigned count; | |
373 | ||
374 | count = bfd_count_sections (some_bfd); | |
375 | if (*start) | |
b8c9b27d | 376 | xfree (* start); |
c906108c SS |
377 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
378 | *end = *start; | |
c5aa993b | 379 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 380 | if (*end > *start + count) |
e2e0b3e5 | 381 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
382 | /* We could realloc the table, but it probably loses for most files. */ |
383 | return 0; | |
384 | } | |
385 | \f | |
386 | static void | |
7be0c536 | 387 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
388 | { |
389 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
390 | struct vmap *vp; | |
391 | ||
392 | vp = vmap_bfd->pvmap; | |
393 | ||
394 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
395 | return; | |
396 | ||
dc6a2ca4 | 397 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
398 | { |
399 | vp->tstart = bfd_section_vma (abfd, sect); | |
400 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
401 | vp->tvma = bfd_section_vma (abfd, sect); | |
402 | vp->toffs = sect->filepos; | |
403 | } | |
dc6a2ca4 | 404 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
405 | { |
406 | vp->dstart = bfd_section_vma (abfd, sect); | |
407 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
408 | vp->dvma = bfd_section_vma (abfd, sect); | |
409 | } | |
410 | /* Silently ignore other types of sections. (FIXME?) */ | |
411 | } | |
412 | ||
413 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
414 | Return the new vmap. */ | |
415 | ||
416 | struct vmap * | |
fba45db2 | 417 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
418 | { |
419 | struct vmap_and_bfd vmap_bfd; | |
420 | struct vmap *vp, **vpp; | |
421 | ||
422 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
423 | memset ((char *) vp, '\0', sizeof (*vp)); | |
424 | vp->nxt = 0; | |
425 | vp->bfd = abfd; | |
426 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
427 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 428 | |
c906108c SS |
429 | vmap_bfd.pbfd = arch; |
430 | vmap_bfd.pvmap = vp; | |
431 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
432 | ||
433 | /* Find the end of the list and append. */ | |
434 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
435 | ; | |
436 | *vpp = vp; | |
437 | ||
438 | return vp; | |
439 | } | |
440 | \f | |
441 | /* Read or write the exec file. | |
442 | ||
443 | Args are address within a BFD file, address within gdb address-space, | |
444 | length, and a flag indicating whether to read or write. | |
445 | ||
446 | Result is a length: | |
447 | ||
c5aa993b JM |
448 | 0: We cannot handle this address and length. |
449 | > 0: We have handled N bytes starting at this address. | |
450 | (If N == length, we did it all.) We might be able | |
451 | to handle more bytes beyond this length, but no | |
452 | promises. | |
453 | < 0: We cannot handle this address, but if somebody | |
454 | else handles (-N) bytes, we can start from there. | |
c906108c | 455 | |
c5aa993b JM |
456 | The same routine is used to handle both core and exec files; |
457 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
458 | |
459 | int | |
1b0ba102 AC |
460 | xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
461 | struct mem_attrib *attrib, struct target_ops *target) | |
c906108c | 462 | { |
020cc13c | 463 | int res; |
c906108c SS |
464 | struct section_table *p; |
465 | CORE_ADDR nextsectaddr, memend; | |
88665544 | 466 | asection *section = NULL; |
c906108c SS |
467 | |
468 | if (len <= 0) | |
e2e0b3e5 | 469 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
470 | |
471 | if (overlay_debugging) | |
472 | { | |
473 | section = find_pc_overlay (memaddr); | |
474 | if (pc_in_unmapped_range (memaddr, section)) | |
475 | memaddr = overlay_mapped_address (memaddr, section); | |
476 | } | |
477 | ||
478 | memend = memaddr + len; | |
c906108c SS |
479 | nextsectaddr = memend; |
480 | ||
c906108c SS |
481 | for (p = target->to_sections; p < target->to_sections_end; p++) |
482 | { | |
483 | if (overlay_debugging && section && p->the_bfd_section && | |
484 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
c5aa993b | 485 | continue; /* not the section we need */ |
c906108c | 486 | if (memaddr >= p->addr) |
3db26b01 JB |
487 | { |
488 | if (memend <= p->endaddr) | |
489 | { | |
490 | /* Entire transfer is within this section. */ | |
85302095 AC |
491 | if (write) |
492 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
493 | myaddr, memaddr - p->addr, | |
494 | len); | |
495 | else | |
496 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
497 | myaddr, memaddr - p->addr, | |
498 | len); | |
3db26b01 JB |
499 | return (res != 0) ? len : 0; |
500 | } | |
501 | else if (memaddr >= p->endaddr) | |
502 | { | |
503 | /* This section ends before the transfer starts. */ | |
504 | continue; | |
505 | } | |
506 | else | |
507 | { | |
508 | /* This section overlaps the transfer. Just do half. */ | |
509 | len = p->endaddr - memaddr; | |
85302095 AC |
510 | if (write) |
511 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
512 | myaddr, memaddr - p->addr, | |
513 | len); | |
514 | else | |
515 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
516 | myaddr, memaddr - p->addr, | |
517 | len); | |
3db26b01 JB |
518 | return (res != 0) ? len : 0; |
519 | } | |
520 | } | |
c906108c SS |
521 | else |
522 | nextsectaddr = min (nextsectaddr, p->addr); | |
523 | } | |
524 | ||
525 | if (nextsectaddr >= memend) | |
c5aa993b | 526 | return 0; /* We can't help */ |
c906108c | 527 | else |
c5aa993b | 528 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 529 | } |
c906108c | 530 | \f |
c5aa993b | 531 | |
c906108c | 532 | void |
fba45db2 | 533 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
534 | { |
535 | struct section_table *p; | |
bb599908 PH |
536 | /* FIXME: 16 is not wide enough when TARGET_ADDR_BIT > 64. */ |
537 | int wid = TARGET_ADDR_BIT <= 32 ? 8 : 16; | |
c906108c | 538 | |
c5aa993b | 539 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 540 | wrap_here (" "); |
a3f17187 | 541 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c SS |
542 | if (abfd == exec_bfd) |
543 | { | |
a3f17187 | 544 | printf_filtered (_("\tEntry point: ")); |
66bf4b3a | 545 | deprecated_print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); |
c906108c SS |
546 | printf_filtered ("\n"); |
547 | } | |
548 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
549 | { | |
bb599908 PH |
550 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
551 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
552 | |
553 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
554 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
555 | since most output will then be much wider than necessary. It | |
556 | may make sense to test the size of the file and choose the | |
557 | format string accordingly. */ | |
a3f17187 | 558 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
559 | if (info_verbose) |
560 | printf_filtered (" @ %s", | |
bb599908 | 561 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
c906108c SS |
562 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
563 | if (p->bfd != abfd) | |
a3f17187 | 564 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
565 | printf_filtered ("\n"); |
566 | } | |
567 | } | |
568 | ||
569 | static void | |
fba45db2 | 570 | exec_files_info (struct target_ops *t) |
c906108c SS |
571 | { |
572 | print_section_info (t, exec_bfd); | |
573 | ||
574 | if (vmap) | |
575 | { | |
576 | struct vmap *vp; | |
577 | ||
a3f17187 | 578 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e SS |
579 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
580 | strlen_paddr (), "tstart", | |
581 | strlen_paddr (), "tend", | |
582 | strlen_paddr (), "dstart", | |
583 | strlen_paddr (), "dend", | |
584 | "section", | |
c5aa993b JM |
585 | "file(member)"); |
586 | ||
587 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
588 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
589 | paddr (vp->tstart), | |
590 | paddr (vp->tend), | |
591 | paddr (vp->dstart), | |
592 | paddr (vp->dend), | |
593 | vp->name, | |
c5aa993b JM |
594 | *vp->member ? "(" : "", vp->member, |
595 | *vp->member ? ")" : ""); | |
c906108c SS |
596 | } |
597 | } | |
598 | ||
0f71a2f6 JM |
599 | /* msnyder 5/21/99: |
600 | exec_set_section_offsets sets the offsets of all the sections | |
601 | in the exec objfile. */ | |
602 | ||
603 | void | |
fba45db2 KB |
604 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
605 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
606 | { |
607 | struct section_table *sect; | |
c5aa993b JM |
608 | |
609 | for (sect = exec_ops.to_sections; | |
610 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
611 | sect++) |
612 | { | |
613 | flagword flags; | |
614 | ||
615 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
616 | ||
617 | if (flags & SEC_CODE) | |
618 | { | |
c5aa993b | 619 | sect->addr += text_off; |
0f71a2f6 JM |
620 | sect->endaddr += text_off; |
621 | } | |
622 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
623 | { | |
c5aa993b | 624 | sect->addr += data_off; |
0f71a2f6 JM |
625 | sect->endaddr += data_off; |
626 | } | |
627 | else if (flags & SEC_ALLOC) | |
628 | { | |
c5aa993b | 629 | sect->addr += bss_off; |
0f71a2f6 JM |
630 | sect->endaddr += bss_off; |
631 | } | |
632 | } | |
633 | } | |
634 | ||
c906108c | 635 | static void |
fba45db2 | 636 | set_section_command (char *args, int from_tty) |
c906108c SS |
637 | { |
638 | struct section_table *p; | |
639 | char *secname; | |
640 | unsigned seclen; | |
641 | unsigned long secaddr; | |
642 | char secprint[100]; | |
643 | long offset; | |
644 | ||
645 | if (args == 0) | |
8a3fe4f8 | 646 | error (_("Must specify section name and its virtual address")); |
c906108c SS |
647 | |
648 | /* Parse out section name */ | |
c5aa993b | 649 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
650 | seclen = args - secname; |
651 | ||
652 | /* Parse out new virtual address */ | |
653 | secaddr = parse_and_eval_address (args); | |
654 | ||
c5aa993b JM |
655 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
656 | { | |
657 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
658 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
659 | { | |
660 | offset = secaddr - p->addr; | |
661 | p->addr += offset; | |
662 | p->endaddr += offset; | |
663 | if (from_tty) | |
664 | exec_files_info (&exec_ops); | |
665 | return; | |
666 | } | |
c906108c | 667 | } |
c906108c SS |
668 | if (seclen >= sizeof (secprint)) |
669 | seclen = sizeof (secprint) - 1; | |
670 | strncpy (secprint, secname, seclen); | |
671 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 672 | error (_("Section %s not found"), secprint); |
c906108c SS |
673 | } |
674 | ||
c1bd25fd DJ |
675 | /* If we can find a section in FILENAME with BFD index INDEX, and the |
676 | user has not assigned an address to it yet (via "set section"), adjust it | |
677 | to ADDRESS. */ | |
678 | ||
679 | void | |
680 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
681 | { | |
682 | struct section_table *p; | |
683 | ||
684 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) | |
685 | { | |
686 | if (strcmp (filename, p->bfd->filename) == 0 | |
687 | && index == p->the_bfd_section->index | |
688 | && p->addr == 0) | |
689 | { | |
690 | p->addr = address; | |
691 | p->endaddr += address; | |
692 | } | |
693 | } | |
694 | } | |
695 | ||
c906108c SS |
696 | /* If mourn is being called in all the right places, this could be say |
697 | `gdb internal error' (since generic_mourn calls | |
698 | breakpoint_init_inferior). */ | |
699 | ||
700 | static int | |
5a168c78 | 701 | ignore (CORE_ADDR addr, bfd_byte *contents) |
c906108c SS |
702 | { |
703 | return 0; | |
704 | } | |
705 | ||
be4d1333 MS |
706 | /* Find mapped memory. */ |
707 | ||
708 | extern void | |
709 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
710 | unsigned long, | |
711 | int, int, int, | |
712 | void *), | |
713 | void *)) | |
714 | { | |
715 | exec_ops.to_find_memory_regions = func; | |
716 | } | |
717 | ||
718 | static char *exec_make_note_section (bfd *, int *); | |
719 | ||
c906108c SS |
720 | /* Fill in the exec file target vector. Very few entries need to be |
721 | defined. */ | |
722 | ||
be4d1333 | 723 | static void |
fba45db2 | 724 | init_exec_ops (void) |
c906108c SS |
725 | { |
726 | exec_ops.to_shortname = "exec"; | |
727 | exec_ops.to_longname = "Local exec file"; | |
728 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
729 | Specify the filename of the executable file."; | |
1adeb98a | 730 | exec_ops.to_open = exec_open; |
c906108c SS |
731 | exec_ops.to_close = exec_close; |
732 | exec_ops.to_attach = find_default_attach; | |
c8e73a31 | 733 | exec_ops.deprecated_xfer_memory = xfer_memory; |
c906108c SS |
734 | exec_ops.to_files_info = exec_files_info; |
735 | exec_ops.to_insert_breakpoint = ignore; | |
736 | exec_ops.to_remove_breakpoint = ignore; | |
737 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
738 | exec_ops.to_stratum = file_stratum; |
739 | exec_ops.to_has_memory = 1; | |
be4d1333 | 740 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 741 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
742 | } |
743 | ||
744 | void | |
fba45db2 | 745 | _initialize_exec (void) |
c906108c SS |
746 | { |
747 | struct cmd_list_element *c; | |
748 | ||
749 | init_exec_ops (); | |
750 | ||
751 | if (!dbx_commands) | |
752 | { | |
1a966eab AC |
753 | c = add_cmd ("file", class_files, file_command, _("\ |
754 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
755 | It is read for its symbols, for getting the contents of pure memory,\n\ |
756 | and it is the program executed when you use the `run' command.\n\ | |
757 | If FILE cannot be found as specified, your execution directory path\n\ | |
758 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 759 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 760 | set_cmd_completer (c, filename_completer); |
c906108c SS |
761 | } |
762 | ||
1a966eab AC |
763 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
764 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
765 | If FILE cannot be found as specified, your execution directory path\n\ |
766 | is searched for a command of that name.\n\ | |
1a966eab | 767 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 768 | set_cmd_completer (c, filename_completer); |
c906108c | 769 | |
1bedd215 AC |
770 | add_com ("section", class_files, set_section_command, _("\ |
771 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
772 | This can be used if the exec file does not contain section addresses,\n\ |
773 | (such as in the a.out format), or when the addresses specified in the\n\ | |
774 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 775 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 776 | |
5bf193a2 AC |
777 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
778 | Set writing into executable and core files."), _("\ | |
779 | Show writing into executable and core files."), NULL, | |
780 | NULL, | |
920d2a44 | 781 | show_write_files, |
5bf193a2 | 782 | &setlist, &showlist); |
c5aa993b | 783 | |
c906108c SS |
784 | add_target (&exec_ops); |
785 | } | |
be4d1333 MS |
786 | |
787 | static char * | |
788 | exec_make_note_section (bfd *obfd, int *note_size) | |
789 | { | |
8a3fe4f8 | 790 | error (_("Can't create a corefile")); |
be4d1333 | 791 | } |