Commit | Line | Data |
---|---|---|
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 | |
10 | the Free Software Foundation; either version 2 of the License, or | |
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 JM |
18 | You should have received a copy of the GNU General Public License |
19 | along with this program; if not, write to the Free Software | |
197e01b6 EZ |
20 | Foundation, Inc., 51 Franklin Street, Fifth Floor, |
21 | Boston, MA 02110-1301, USA. */ | |
c906108c SS |
22 | |
23 | #include "defs.h" | |
24 | #include "frame.h" | |
25 | #include "inferior.h" | |
26 | #include "target.h" | |
27 | #include "gdbcmd.h" | |
28 | #include "language.h" | |
29 | #include "symfile.h" | |
30 | #include "objfiles.h" | |
c5f0f3d0 | 31 | #include "completer.h" |
fd0407d6 | 32 | #include "value.h" |
4646aa9d | 33 | #include "exec.h" |
ea53e89f | 34 | #include "observer.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; | |
72 | ||
73 | /* Whether to open exec and core files read-only or read-write. */ | |
74 | ||
75 | int write_files = 0; | |
920d2a44 AC |
76 | static void |
77 | show_write_files (struct ui_file *file, int from_tty, | |
78 | struct cmd_list_element *c, const char *value) | |
79 | { | |
80 | fprintf_filtered (file, _("Writing into executable and core files is %s.\n"), | |
81 | value); | |
82 | } | |
83 | ||
c906108c | 84 | |
c906108c SS |
85 | struct vmap *vmap; |
86 | ||
4c42eaff | 87 | static void |
1adeb98a FN |
88 | exec_open (char *args, int from_tty) |
89 | { | |
90 | target_preopen (from_tty); | |
91 | exec_file_attach (args, from_tty); | |
92 | } | |
93 | ||
c906108c | 94 | static void |
fba45db2 | 95 | exec_close (int quitting) |
c906108c SS |
96 | { |
97 | int need_symtab_cleanup = 0; | |
98 | struct vmap *vp, *nxt; | |
c5aa993b JM |
99 | |
100 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
101 | { |
102 | vp = nxt; | |
103 | nxt = vp->nxt; | |
104 | ||
105 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
106 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
107 | ||
c906108c SS |
108 | if (vp->objfile) |
109 | { | |
110 | free_objfile (vp->objfile); | |
111 | need_symtab_cleanup = 1; | |
112 | } | |
113 | else if (vp->bfd != exec_bfd) | |
114 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
115 | if (!bfd_close (vp->bfd)) | |
8a3fe4f8 | 116 | warning (_("cannot close \"%s\": %s"), |
c906108c SS |
117 | vp->name, bfd_errmsg (bfd_get_error ())); |
118 | ||
119 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
120 | be doing here? Should we just free everything in |
121 | vp->objfile->symtabs? Should free_objfile do that? | |
122 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
123 | valid here. */ | |
c906108c | 124 | free_named_symtabs (vp->name); |
b8c9b27d | 125 | xfree (vp); |
c906108c SS |
126 | } |
127 | ||
128 | vmap = NULL; | |
129 | ||
130 | if (exec_bfd) | |
131 | { | |
132 | char *name = bfd_get_filename (exec_bfd); | |
133 | ||
134 | if (!bfd_close (exec_bfd)) | |
8a3fe4f8 | 135 | warning (_("cannot close \"%s\": %s"), |
c906108c | 136 | name, bfd_errmsg (bfd_get_error ())); |
b8c9b27d | 137 | xfree (name); |
c906108c SS |
138 | exec_bfd = NULL; |
139 | } | |
140 | ||
141 | if (exec_ops.to_sections) | |
142 | { | |
b8c9b27d | 143 | xfree (exec_ops.to_sections); |
c906108c SS |
144 | exec_ops.to_sections = NULL; |
145 | exec_ops.to_sections_end = NULL; | |
146 | } | |
147 | } | |
148 | ||
1adeb98a FN |
149 | void |
150 | exec_file_clear (int from_tty) | |
151 | { | |
152 | /* Remove exec file. */ | |
153 | unpush_target (&exec_ops); | |
154 | ||
155 | if (from_tty) | |
a3f17187 | 156 | printf_unfiltered (_("No executable file now.\n")); |
1adeb98a FN |
157 | } |
158 | ||
c906108c SS |
159 | /* Process the first arg in ARGS as the new exec file. |
160 | ||
c5aa993b JM |
161 | This function is intended to be behave essentially the same |
162 | as exec_file_command, except that the latter will detect when | |
163 | a target is being debugged, and will ask the user whether it | |
164 | should be shut down first. (If the answer is "no", then the | |
165 | new file is ignored.) | |
c906108c | 166 | |
c5aa993b JM |
167 | This file is used by exec_file_command, to do the work of opening |
168 | and processing the exec file after any prompting has happened. | |
c906108c | 169 | |
c5aa993b JM |
170 | And, it is used by child_attach, when the attach command was |
171 | given a pid but not a exec pathname, and the attach command could | |
172 | figure out the pathname from the pid. (In this case, we shouldn't | |
173 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
174 | we're supplying the exec pathname late for good reason.) |
175 | ||
176 | ARGS is assumed to be the filename. */ | |
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 SS |
194 | { |
195 | char *scratch_pathname; | |
196 | int scratch_chan; | |
c5aa993b | 197 | |
014d698b | 198 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, filename, |
c5aa993b | 199 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, |
c906108c | 200 | &scratch_pathname); |
cfc3008e | 201 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 202 | if (scratch_chan < 0) |
c5aa993b JM |
203 | { |
204 | char *exename = alloca (strlen (filename) + 5); | |
205 | strcat (strcpy (exename, filename), ".exe"); | |
014d698b EZ |
206 | scratch_chan = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST, exename, |
207 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
208 | &scratch_pathname); | |
c5aa993b | 209 | } |
c906108c SS |
210 | #endif |
211 | if (scratch_chan < 0) | |
212 | perror_with_name (filename); | |
9f76c2cd MM |
213 | exec_bfd = bfd_fopen (scratch_pathname, gnutarget, |
214 | write_files ? FOPEN_RUB : FOPEN_RB, | |
215 | scratch_chan); | |
c906108c SS |
216 | |
217 | if (!exec_bfd) | |
8a3fe4f8 | 218 | error (_("\"%s\": could not open as an executable file: %s"), |
c906108c SS |
219 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
220 | ||
221 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
c5aa993b JM |
222 | same malloc'd string. However exec_close() will attempt to free it |
223 | via the exec_bfd->name pointer, so we need to make another copy and | |
224 | leave exec_bfd as the new owner of the original copy. */ | |
c2d11a7d | 225 | scratch_pathname = xstrdup (scratch_pathname); |
b8c9b27d | 226 | make_cleanup (xfree, scratch_pathname); |
c5aa993b | 227 | |
c906108c SS |
228 | if (!bfd_check_format (exec_bfd, bfd_object)) |
229 | { | |
230 | /* Make sure to close exec_bfd, or else "run" might try to use | |
231 | it. */ | |
232 | exec_close (0); | |
8a3fe4f8 | 233 | error (_("\"%s\": not in executable format: %s"), |
c906108c SS |
234 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
235 | } | |
236 | ||
237 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 238 | way to accomplish. */ |
52d16ba8 | 239 | #ifdef DEPRECATED_IBM6000_TARGET |
c906108c SS |
240 | /* Setup initial vmap. */ |
241 | ||
242 | map_vmap (exec_bfd, 0); | |
243 | if (vmap == NULL) | |
244 | { | |
245 | /* Make sure to close exec_bfd, or else "run" might try to use | |
246 | it. */ | |
247 | exec_close (0); | |
8a3fe4f8 | 248 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
249 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
250 | } | |
52d16ba8 | 251 | #endif /* DEPRECATED_IBM6000_TARGET */ |
c906108c SS |
252 | |
253 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
c5aa993b | 254 | &exec_ops.to_sections_end)) |
c906108c SS |
255 | { |
256 | /* Make sure to close exec_bfd, or else "run" might try to use | |
257 | it. */ | |
258 | exec_close (0); | |
8a3fe4f8 | 259 | error (_("\"%s\": can't find the file sections: %s"), |
c906108c SS |
260 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
261 | } | |
262 | ||
c906108c SS |
263 | validate_files (); |
264 | ||
265 | set_gdbarch_from_file (exec_bfd); | |
266 | ||
267 | push_target (&exec_ops); | |
268 | ||
269 | /* Tell display code (if any) about the changed file name. */ | |
9a4105ab AC |
270 | if (deprecated_exec_file_display_hook) |
271 | (*deprecated_exec_file_display_hook) (filename); | |
c906108c | 272 | } |
ce7d4522 | 273 | bfd_cache_close_all (); |
ea53e89f | 274 | observer_notify_executable_changed (NULL); |
c906108c SS |
275 | } |
276 | ||
277 | /* Process the first arg in ARGS as the new exec file. | |
278 | ||
c5aa993b JM |
279 | Note that we have to explicitly ignore additional args, since we can |
280 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
281 | which can take multiple args. |
282 | ||
283 | If ARGS is NULL, we just want to close the exec file. */ | |
c906108c | 284 | |
1adeb98a | 285 | static void |
fba45db2 | 286 | exec_file_command (char *args, int from_tty) |
c906108c | 287 | { |
1adeb98a FN |
288 | char **argv; |
289 | char *filename; | |
4c42eaff DJ |
290 | |
291 | if (from_tty && target_has_execution | |
292 | && !query (_("A program is being debugged already.\n" | |
293 | "Are you sure you want to change the file? "))) | |
294 | error (_("File not changed.")); | |
1adeb98a FN |
295 | |
296 | if (args) | |
297 | { | |
298 | /* Scan through the args and pick up the first non option arg | |
299 | as the filename. */ | |
300 | ||
301 | argv = buildargv (args); | |
302 | if (argv == NULL) | |
303 | nomem (0); | |
304 | ||
305 | make_cleanup_freeargv (argv); | |
306 | ||
307 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
308 | {; | |
309 | } | |
310 | if (*argv == NULL) | |
8a3fe4f8 | 311 | error (_("No executable file name was specified")); |
1adeb98a FN |
312 | |
313 | filename = tilde_expand (*argv); | |
314 | make_cleanup (xfree, filename); | |
315 | exec_file_attach (filename, from_tty); | |
316 | } | |
317 | else | |
318 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
319 | } |
320 | ||
321 | /* Set both the exec file and the symbol file, in one command. | |
322 | What a novelty. Why did GDB go through four major releases before this | |
323 | command was added? */ | |
324 | ||
325 | static void | |
fba45db2 | 326 | file_command (char *arg, int from_tty) |
c906108c SS |
327 | { |
328 | /* FIXME, if we lose on reading the symbol file, we should revert | |
329 | the exec file, but that's rough. */ | |
330 | exec_file_command (arg, from_tty); | |
331 | symbol_file_command (arg, from_tty); | |
9a4105ab AC |
332 | if (deprecated_file_changed_hook) |
333 | deprecated_file_changed_hook (arg); | |
c906108c | 334 | } |
c906108c | 335 | \f |
c5aa993b | 336 | |
c906108c SS |
337 | /* Locate all mappable sections of a BFD file. |
338 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
339 | we cast it back to its proper type. */ | |
340 | ||
341 | static void | |
7be0c536 AC |
342 | add_to_section_table (bfd *abfd, struct bfd_section *asect, |
343 | void *table_pp_char) | |
c906108c | 344 | { |
c5aa993b | 345 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
346 | flagword aflag; |
347 | ||
348 | aflag = bfd_get_section_flags (abfd, asect); | |
349 | if (!(aflag & SEC_ALLOC)) | |
350 | return; | |
351 | if (0 == bfd_section_size (abfd, asect)) | |
352 | return; | |
353 | (*table_pp)->bfd = abfd; | |
354 | (*table_pp)->the_bfd_section = asect; | |
355 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
356 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
357 | (*table_pp)++; | |
358 | } | |
359 | ||
360 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
361 | Returns 0 if OK, 1 on error. */ | |
362 | ||
363 | int | |
7be0c536 | 364 | build_section_table (struct bfd *some_bfd, struct section_table **start, |
fba45db2 | 365 | struct section_table **end) |
c906108c SS |
366 | { |
367 | unsigned count; | |
368 | ||
369 | count = bfd_count_sections (some_bfd); | |
370 | if (*start) | |
b8c9b27d | 371 | xfree (* start); |
c906108c SS |
372 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
373 | *end = *start; | |
c5aa993b | 374 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 375 | if (*end > *start + count) |
e2e0b3e5 | 376 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
377 | /* We could realloc the table, but it probably loses for most files. */ |
378 | return 0; | |
379 | } | |
380 | \f | |
381 | static void | |
7be0c536 | 382 | bfdsec_to_vmap (struct bfd *abfd, struct bfd_section *sect, void *arg3) |
c906108c SS |
383 | { |
384 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
385 | struct vmap *vp; | |
386 | ||
387 | vp = vmap_bfd->pvmap; | |
388 | ||
389 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
390 | return; | |
391 | ||
dc6a2ca4 | 392 | if (strcmp (bfd_section_name (abfd, sect), ".text") == 0) |
c906108c SS |
393 | { |
394 | vp->tstart = bfd_section_vma (abfd, sect); | |
395 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
396 | vp->tvma = bfd_section_vma (abfd, sect); | |
397 | vp->toffs = sect->filepos; | |
398 | } | |
dc6a2ca4 | 399 | else if (strcmp (bfd_section_name (abfd, sect), ".data") == 0) |
c906108c SS |
400 | { |
401 | vp->dstart = bfd_section_vma (abfd, sect); | |
402 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
403 | vp->dvma = bfd_section_vma (abfd, sect); | |
404 | } | |
405 | /* Silently ignore other types of sections. (FIXME?) */ | |
406 | } | |
407 | ||
408 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
409 | Return the new vmap. */ | |
410 | ||
411 | struct vmap * | |
fba45db2 | 412 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
413 | { |
414 | struct vmap_and_bfd vmap_bfd; | |
415 | struct vmap *vp, **vpp; | |
416 | ||
417 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
418 | memset ((char *) vp, '\0', sizeof (*vp)); | |
419 | vp->nxt = 0; | |
420 | vp->bfd = abfd; | |
421 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
422 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 423 | |
c906108c SS |
424 | vmap_bfd.pbfd = arch; |
425 | vmap_bfd.pvmap = vp; | |
426 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
427 | ||
428 | /* Find the end of the list and append. */ | |
429 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
430 | ; | |
431 | *vpp = vp; | |
432 | ||
433 | return vp; | |
434 | } | |
435 | \f | |
436 | /* Read or write the exec file. | |
437 | ||
438 | Args are address within a BFD file, address within gdb address-space, | |
439 | length, and a flag indicating whether to read or write. | |
440 | ||
441 | Result is a length: | |
442 | ||
c5aa993b JM |
443 | 0: We cannot handle this address and length. |
444 | > 0: We have handled N bytes starting at this address. | |
445 | (If N == length, we did it all.) We might be able | |
446 | to handle more bytes beyond this length, but no | |
447 | promises. | |
448 | < 0: We cannot handle this address, but if somebody | |
449 | else handles (-N) bytes, we can start from there. | |
c906108c | 450 | |
c5aa993b JM |
451 | The same routine is used to handle both core and exec files; |
452 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
453 | |
454 | int | |
1b0ba102 AC |
455 | xfer_memory (CORE_ADDR memaddr, gdb_byte *myaddr, int len, int write, |
456 | struct mem_attrib *attrib, struct target_ops *target) | |
c906108c | 457 | { |
020cc13c | 458 | int res; |
c906108c SS |
459 | struct section_table *p; |
460 | CORE_ADDR nextsectaddr, memend; | |
88665544 | 461 | asection *section = NULL; |
c906108c SS |
462 | |
463 | if (len <= 0) | |
e2e0b3e5 | 464 | internal_error (__FILE__, __LINE__, _("failed internal consistency check")); |
c906108c SS |
465 | |
466 | if (overlay_debugging) | |
467 | { | |
468 | section = find_pc_overlay (memaddr); | |
469 | if (pc_in_unmapped_range (memaddr, section)) | |
470 | memaddr = overlay_mapped_address (memaddr, section); | |
471 | } | |
472 | ||
473 | memend = memaddr + len; | |
c906108c SS |
474 | nextsectaddr = memend; |
475 | ||
c906108c SS |
476 | for (p = target->to_sections; p < target->to_sections_end; p++) |
477 | { | |
478 | if (overlay_debugging && section && p->the_bfd_section && | |
479 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
c5aa993b | 480 | continue; /* not the section we need */ |
c906108c | 481 | if (memaddr >= p->addr) |
3db26b01 JB |
482 | { |
483 | if (memend <= p->endaddr) | |
484 | { | |
485 | /* Entire transfer is within this section. */ | |
85302095 AC |
486 | if (write) |
487 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
488 | myaddr, memaddr - p->addr, | |
489 | len); | |
490 | else | |
491 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
492 | myaddr, memaddr - p->addr, | |
493 | len); | |
3db26b01 JB |
494 | return (res != 0) ? len : 0; |
495 | } | |
496 | else if (memaddr >= p->endaddr) | |
497 | { | |
498 | /* This section ends before the transfer starts. */ | |
499 | continue; | |
500 | } | |
501 | else | |
502 | { | |
503 | /* This section overlaps the transfer. Just do half. */ | |
504 | len = p->endaddr - memaddr; | |
85302095 AC |
505 | if (write) |
506 | res = bfd_set_section_contents (p->bfd, p->the_bfd_section, | |
507 | myaddr, memaddr - p->addr, | |
508 | len); | |
509 | else | |
510 | res = bfd_get_section_contents (p->bfd, p->the_bfd_section, | |
511 | myaddr, memaddr - p->addr, | |
512 | len); | |
3db26b01 JB |
513 | return (res != 0) ? len : 0; |
514 | } | |
515 | } | |
c906108c SS |
516 | else |
517 | nextsectaddr = min (nextsectaddr, p->addr); | |
518 | } | |
519 | ||
520 | if (nextsectaddr >= memend) | |
c5aa993b | 521 | return 0; /* We can't help */ |
c906108c | 522 | else |
c5aa993b | 523 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 524 | } |
c906108c | 525 | \f |
c5aa993b | 526 | |
c906108c | 527 | void |
fba45db2 | 528 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
529 | { |
530 | struct section_table *p; | |
bb599908 PH |
531 | /* FIXME: 16 is not wide enough when TARGET_ADDR_BIT > 64. */ |
532 | int wid = TARGET_ADDR_BIT <= 32 ? 8 : 16; | |
c906108c | 533 | |
c5aa993b | 534 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 535 | wrap_here (" "); |
a3f17187 | 536 | printf_filtered (_("file type %s.\n"), bfd_get_target (abfd)); |
c906108c SS |
537 | if (abfd == exec_bfd) |
538 | { | |
a3f17187 | 539 | printf_filtered (_("\tEntry point: ")); |
66bf4b3a | 540 | deprecated_print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); |
c906108c SS |
541 | printf_filtered ("\n"); |
542 | } | |
543 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
544 | { | |
bb599908 PH |
545 | printf_filtered ("\t%s", hex_string_custom (p->addr, wid)); |
546 | printf_filtered (" - %s", hex_string_custom (p->endaddr, wid)); | |
bcf16802 KB |
547 | |
548 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
549 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
550 | since most output will then be much wider than necessary. It | |
551 | may make sense to test the size of the file and choose the | |
552 | format string accordingly. */ | |
a3f17187 | 553 | /* FIXME: i18n: Need to rewrite this sentence. */ |
c906108c SS |
554 | if (info_verbose) |
555 | printf_filtered (" @ %s", | |
bb599908 | 556 | hex_string_custom (p->the_bfd_section->filepos, 8)); |
c906108c SS |
557 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
558 | if (p->bfd != abfd) | |
a3f17187 | 559 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); |
c906108c SS |
560 | printf_filtered ("\n"); |
561 | } | |
562 | } | |
563 | ||
564 | static void | |
fba45db2 | 565 | exec_files_info (struct target_ops *t) |
c906108c SS |
566 | { |
567 | print_section_info (t, exec_bfd); | |
568 | ||
569 | if (vmap) | |
570 | { | |
571 | struct vmap *vp; | |
572 | ||
a3f17187 | 573 | printf_unfiltered (_("\tMapping info for file `%s'.\n"), vmap->name); |
d4f3574e SS |
574 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
575 | strlen_paddr (), "tstart", | |
576 | strlen_paddr (), "tend", | |
577 | strlen_paddr (), "dstart", | |
578 | strlen_paddr (), "dend", | |
579 | "section", | |
c5aa993b JM |
580 | "file(member)"); |
581 | ||
582 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
583 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
584 | paddr (vp->tstart), | |
585 | paddr (vp->tend), | |
586 | paddr (vp->dstart), | |
587 | paddr (vp->dend), | |
588 | vp->name, | |
c5aa993b JM |
589 | *vp->member ? "(" : "", vp->member, |
590 | *vp->member ? ")" : ""); | |
c906108c SS |
591 | } |
592 | } | |
593 | ||
0f71a2f6 JM |
594 | /* msnyder 5/21/99: |
595 | exec_set_section_offsets sets the offsets of all the sections | |
596 | in the exec objfile. */ | |
597 | ||
598 | void | |
fba45db2 KB |
599 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
600 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
601 | { |
602 | struct section_table *sect; | |
c5aa993b JM |
603 | |
604 | for (sect = exec_ops.to_sections; | |
605 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
606 | sect++) |
607 | { | |
608 | flagword flags; | |
609 | ||
610 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
611 | ||
612 | if (flags & SEC_CODE) | |
613 | { | |
c5aa993b | 614 | sect->addr += text_off; |
0f71a2f6 JM |
615 | sect->endaddr += text_off; |
616 | } | |
617 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
618 | { | |
c5aa993b | 619 | sect->addr += data_off; |
0f71a2f6 JM |
620 | sect->endaddr += data_off; |
621 | } | |
622 | else if (flags & SEC_ALLOC) | |
623 | { | |
c5aa993b | 624 | sect->addr += bss_off; |
0f71a2f6 JM |
625 | sect->endaddr += bss_off; |
626 | } | |
627 | } | |
628 | } | |
629 | ||
c906108c | 630 | static void |
fba45db2 | 631 | set_section_command (char *args, int from_tty) |
c906108c SS |
632 | { |
633 | struct section_table *p; | |
634 | char *secname; | |
635 | unsigned seclen; | |
636 | unsigned long secaddr; | |
637 | char secprint[100]; | |
638 | long offset; | |
639 | ||
640 | if (args == 0) | |
8a3fe4f8 | 641 | error (_("Must specify section name and its virtual address")); |
c906108c SS |
642 | |
643 | /* Parse out section name */ | |
c5aa993b | 644 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
645 | seclen = args - secname; |
646 | ||
647 | /* Parse out new virtual address */ | |
648 | secaddr = parse_and_eval_address (args); | |
649 | ||
c5aa993b JM |
650 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
651 | { | |
652 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
653 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
654 | { | |
655 | offset = secaddr - p->addr; | |
656 | p->addr += offset; | |
657 | p->endaddr += offset; | |
658 | if (from_tty) | |
659 | exec_files_info (&exec_ops); | |
660 | return; | |
661 | } | |
c906108c | 662 | } |
c906108c SS |
663 | if (seclen >= sizeof (secprint)) |
664 | seclen = sizeof (secprint) - 1; | |
665 | strncpy (secprint, secname, seclen); | |
666 | secprint[seclen] = '\0'; | |
8a3fe4f8 | 667 | error (_("Section %s not found"), secprint); |
c906108c SS |
668 | } |
669 | ||
c1bd25fd DJ |
670 | /* If we can find a section in FILENAME with BFD index INDEX, and the |
671 | user has not assigned an address to it yet (via "set section"), adjust it | |
672 | to ADDRESS. */ | |
673 | ||
674 | void | |
675 | exec_set_section_address (const char *filename, int index, CORE_ADDR address) | |
676 | { | |
677 | struct section_table *p; | |
678 | ||
679 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) | |
680 | { | |
681 | if (strcmp (filename, p->bfd->filename) == 0 | |
682 | && index == p->the_bfd_section->index | |
683 | && p->addr == 0) | |
684 | { | |
685 | p->addr = address; | |
686 | p->endaddr += address; | |
687 | } | |
688 | } | |
689 | } | |
690 | ||
c906108c SS |
691 | /* If mourn is being called in all the right places, this could be say |
692 | `gdb internal error' (since generic_mourn calls | |
693 | breakpoint_init_inferior). */ | |
694 | ||
695 | static int | |
8181d85f | 696 | ignore (struct bp_target_info *bp_tgt) |
c906108c SS |
697 | { |
698 | return 0; | |
699 | } | |
700 | ||
be4d1333 MS |
701 | /* Find mapped memory. */ |
702 | ||
703 | extern void | |
704 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
705 | unsigned long, | |
706 | int, int, int, | |
707 | void *), | |
708 | void *)) | |
709 | { | |
710 | exec_ops.to_find_memory_regions = func; | |
711 | } | |
712 | ||
713 | static char *exec_make_note_section (bfd *, int *); | |
714 | ||
c906108c SS |
715 | /* Fill in the exec file target vector. Very few entries need to be |
716 | defined. */ | |
717 | ||
be4d1333 | 718 | static void |
fba45db2 | 719 | init_exec_ops (void) |
c906108c SS |
720 | { |
721 | exec_ops.to_shortname = "exec"; | |
722 | exec_ops.to_longname = "Local exec file"; | |
723 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
724 | Specify the filename of the executable file."; | |
1adeb98a | 725 | exec_ops.to_open = exec_open; |
c906108c SS |
726 | exec_ops.to_close = exec_close; |
727 | exec_ops.to_attach = find_default_attach; | |
c8e73a31 | 728 | exec_ops.deprecated_xfer_memory = xfer_memory; |
c906108c SS |
729 | exec_ops.to_files_info = exec_files_info; |
730 | exec_ops.to_insert_breakpoint = ignore; | |
731 | exec_ops.to_remove_breakpoint = ignore; | |
732 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
733 | exec_ops.to_stratum = file_stratum; |
734 | exec_ops.to_has_memory = 1; | |
be4d1333 | 735 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 736 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
737 | } |
738 | ||
739 | void | |
fba45db2 | 740 | _initialize_exec (void) |
c906108c SS |
741 | { |
742 | struct cmd_list_element *c; | |
743 | ||
744 | init_exec_ops (); | |
745 | ||
746 | if (!dbx_commands) | |
747 | { | |
1a966eab AC |
748 | c = add_cmd ("file", class_files, file_command, _("\ |
749 | Use FILE as program to be debugged.\n\ | |
c906108c SS |
750 | It is read for its symbols, for getting the contents of pure memory,\n\ |
751 | and it is the program executed when you use the `run' command.\n\ | |
752 | If FILE cannot be found as specified, your execution directory path\n\ | |
753 | ($PATH) is searched for a command of that name.\n\ | |
1a966eab | 754 | No arg means to have no executable file and no symbols."), &cmdlist); |
5ba2abeb | 755 | set_cmd_completer (c, filename_completer); |
c906108c SS |
756 | } |
757 | ||
1a966eab AC |
758 | c = add_cmd ("exec-file", class_files, exec_file_command, _("\ |
759 | Use FILE as program for getting contents of pure memory.\n\ | |
c906108c SS |
760 | If FILE cannot be found as specified, your execution directory path\n\ |
761 | is searched for a command of that name.\n\ | |
1a966eab | 762 | No arg means have no executable file."), &cmdlist); |
5ba2abeb | 763 | set_cmd_completer (c, filename_completer); |
c906108c | 764 | |
1bedd215 AC |
765 | add_com ("section", class_files, set_section_command, _("\ |
766 | Change the base address of section SECTION of the exec file to ADDR.\n\ | |
c906108c SS |
767 | This can be used if the exec file does not contain section addresses,\n\ |
768 | (such as in the a.out format), or when the addresses specified in the\n\ | |
769 | file itself are wrong. Each section must be changed separately. The\n\ | |
1bedd215 | 770 | ``info files'' command lists all the sections and their addresses.")); |
c906108c | 771 | |
5bf193a2 AC |
772 | add_setshow_boolean_cmd ("write", class_support, &write_files, _("\ |
773 | Set writing into executable and core files."), _("\ | |
774 | Show writing into executable and core files."), NULL, | |
775 | NULL, | |
920d2a44 | 776 | show_write_files, |
5bf193a2 | 777 | &setlist, &showlist); |
c5aa993b | 778 | |
c906108c SS |
779 | add_target (&exec_ops); |
780 | } | |
be4d1333 MS |
781 | |
782 | static char * | |
783 | exec_make_note_section (bfd *obfd, int *note_size) | |
784 | { | |
8a3fe4f8 | 785 | error (_("Can't create a corefile")); |
be4d1333 | 786 | } |