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c906108c | 1 | /* Work with executable files, for GDB. |
b6ba6518 | 2 | Copyright 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, |
be4d1333 | 3 | 1998, 1999, 2000, 2001, 2002 |
c5aa993b | 4 | 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 | |
20 | Foundation, Inc., 59 Temple Place - Suite 330, | |
21 | Boston, MA 02111-1307, 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" |
c906108c SS |
33 | |
34 | #ifdef USG | |
35 | #include <sys/types.h> | |
36 | #endif | |
37 | ||
38 | #include <fcntl.h> | |
38017ce8 | 39 | #include <readline/readline.h> |
c906108c SS |
40 | #include "gdb_string.h" |
41 | ||
42 | #include "gdbcore.h" | |
43 | ||
44 | #include <ctype.h> | |
45 | #include "gdb_stat.h" | |
46 | #ifndef O_BINARY | |
47 | #define O_BINARY 0 | |
48 | #endif | |
49 | ||
50 | #include "xcoffsolib.h" | |
51 | ||
a14ed312 | 52 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 53 | |
507f3c78 | 54 | void (*file_changed_hook) (char *); |
c906108c SS |
55 | |
56 | /* Prototypes for local functions */ | |
57 | ||
4efb68b1 | 58 | static void add_to_section_table (bfd *, sec_ptr, void *); |
c906108c | 59 | |
a14ed312 | 60 | static void exec_close (int); |
c906108c | 61 | |
a14ed312 | 62 | static void file_command (char *, int); |
c906108c | 63 | |
a14ed312 | 64 | static void set_section_command (char *, int); |
c906108c | 65 | |
a14ed312 | 66 | static void exec_files_info (struct target_ops *); |
c906108c | 67 | |
4efb68b1 | 68 | static void bfdsec_to_vmap (bfd *, sec_ptr, void *); |
c906108c | 69 | |
a14ed312 | 70 | static int ignore (CORE_ADDR, char *); |
c906108c | 71 | |
a14ed312 | 72 | static void init_exec_ops (void); |
c906108c | 73 | |
a14ed312 | 74 | void _initialize_exec (void); |
c906108c | 75 | |
c906108c SS |
76 | /* The target vector for executable files. */ |
77 | ||
78 | struct target_ops exec_ops; | |
79 | ||
80 | /* The Binary File Descriptor handle for the executable file. */ | |
81 | ||
82 | bfd *exec_bfd = NULL; | |
83 | ||
84 | /* Whether to open exec and core files read-only or read-write. */ | |
85 | ||
86 | int write_files = 0; | |
87 | ||
c906108c SS |
88 | struct vmap *vmap; |
89 | ||
1adeb98a FN |
90 | void |
91 | exec_open (char *args, int from_tty) | |
92 | { | |
93 | target_preopen (from_tty); | |
94 | exec_file_attach (args, from_tty); | |
95 | } | |
96 | ||
c906108c | 97 | static void |
fba45db2 | 98 | exec_close (int quitting) |
c906108c SS |
99 | { |
100 | int need_symtab_cleanup = 0; | |
101 | struct vmap *vp, *nxt; | |
c5aa993b JM |
102 | |
103 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
104 | { |
105 | vp = nxt; | |
106 | nxt = vp->nxt; | |
107 | ||
108 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
109 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
110 | ||
c906108c SS |
111 | if (vp->objfile) |
112 | { | |
113 | free_objfile (vp->objfile); | |
114 | need_symtab_cleanup = 1; | |
115 | } | |
116 | else if (vp->bfd != exec_bfd) | |
117 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
118 | if (!bfd_close (vp->bfd)) | |
119 | warning ("cannot close \"%s\": %s", | |
120 | vp->name, bfd_errmsg (bfd_get_error ())); | |
121 | ||
122 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
123 | be doing here? Should we just free everything in |
124 | vp->objfile->symtabs? Should free_objfile do that? | |
125 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
126 | valid here. */ | |
c906108c | 127 | free_named_symtabs (vp->name); |
b8c9b27d | 128 | xfree (vp); |
c906108c SS |
129 | } |
130 | ||
131 | vmap = NULL; | |
132 | ||
133 | if (exec_bfd) | |
134 | { | |
135 | char *name = bfd_get_filename (exec_bfd); | |
136 | ||
137 | if (!bfd_close (exec_bfd)) | |
138 | warning ("cannot close \"%s\": %s", | |
139 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 140 | xfree (name); |
c906108c SS |
141 | exec_bfd = NULL; |
142 | } | |
143 | ||
144 | if (exec_ops.to_sections) | |
145 | { | |
b8c9b27d | 146 | xfree (exec_ops.to_sections); |
c906108c SS |
147 | exec_ops.to_sections = NULL; |
148 | exec_ops.to_sections_end = NULL; | |
149 | } | |
150 | } | |
151 | ||
1adeb98a FN |
152 | void |
153 | exec_file_clear (int from_tty) | |
154 | { | |
155 | /* Remove exec file. */ | |
156 | unpush_target (&exec_ops); | |
157 | ||
158 | if (from_tty) | |
159 | printf_unfiltered ("No executable file now.\n"); | |
160 | } | |
161 | ||
c906108c SS |
162 | /* Process the first arg in ARGS as the new exec file. |
163 | ||
c5aa993b JM |
164 | This function is intended to be behave essentially the same |
165 | as exec_file_command, except that the latter will detect when | |
166 | a target is being debugged, and will ask the user whether it | |
167 | should be shut down first. (If the answer is "no", then the | |
168 | new file is ignored.) | |
c906108c | 169 | |
c5aa993b JM |
170 | This file is used by exec_file_command, to do the work of opening |
171 | and processing the exec file after any prompting has happened. | |
c906108c | 172 | |
c5aa993b JM |
173 | And, it is used by child_attach, when the attach command was |
174 | given a pid but not a exec pathname, and the attach command could | |
175 | figure out the pathname from the pid. (In this case, we shouldn't | |
176 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
177 | we're supplying the exec pathname late for good reason.) |
178 | ||
179 | ARGS is assumed to be the filename. */ | |
c906108c SS |
180 | |
181 | void | |
1adeb98a | 182 | exec_file_attach (char *filename, int from_tty) |
c906108c | 183 | { |
c906108c SS |
184 | /* Remove any previous exec file. */ |
185 | unpush_target (&exec_ops); | |
186 | ||
187 | /* Now open and digest the file the user requested, if any. */ | |
188 | ||
1adeb98a FN |
189 | if (!filename) |
190 | { | |
191 | if (from_tty) | |
192 | printf_unfiltered ("No executable file now.\n"); | |
193 | } | |
194 | else | |
c906108c SS |
195 | { |
196 | char *scratch_pathname; | |
197 | int scratch_chan; | |
c5aa993b | 198 | |
c5aa993b JM |
199 | scratch_chan = openp (getenv ("PATH"), 1, filename, |
200 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
c906108c | 201 | &scratch_pathname); |
cfc3008e | 202 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 203 | if (scratch_chan < 0) |
c5aa993b JM |
204 | { |
205 | char *exename = alloca (strlen (filename) + 5); | |
206 | strcat (strcpy (exename, filename), ".exe"); | |
207 | scratch_chan = openp (getenv ("PATH"), 1, exename, write_files ? | |
208 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, &scratch_pathname); | |
209 | } | |
c906108c SS |
210 | #endif |
211 | if (scratch_chan < 0) | |
212 | perror_with_name (filename); | |
213 | exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); | |
214 | ||
215 | if (!exec_bfd) | |
216 | error ("\"%s\": could not open as an executable file: %s", | |
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); | |
231 | error ("\"%s\": not in executable format: %s", | |
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); | |
246 | error ("\"%s\": can't find the file sections: %s", | |
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); | |
c5aa993b | 257 | error ("\"%s\": can't find the file sections: %s", |
c906108c SS |
258 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
259 | } | |
260 | ||
b9fbf434 AC |
261 | #ifdef DEPRECATED_HPUX_TEXT_END |
262 | DEPRECATED_HPUX_TEXT_END (&exec_ops); | |
263 | #endif | |
c906108c SS |
264 | |
265 | validate_files (); | |
266 | ||
267 | set_gdbarch_from_file (exec_bfd); | |
268 | ||
269 | push_target (&exec_ops); | |
270 | ||
271 | /* Tell display code (if any) about the changed file name. */ | |
272 | if (exec_file_display_hook) | |
273 | (*exec_file_display_hook) (filename); | |
274 | } | |
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; | |
290 | ||
c906108c | 291 | target_preopen (from_tty); |
1adeb98a FN |
292 | |
293 | if (args) | |
294 | { | |
295 | /* Scan through the args and pick up the first non option arg | |
296 | as the filename. */ | |
297 | ||
298 | argv = buildargv (args); | |
299 | if (argv == NULL) | |
300 | nomem (0); | |
301 | ||
302 | make_cleanup_freeargv (argv); | |
303 | ||
304 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
305 | {; | |
306 | } | |
307 | if (*argv == NULL) | |
308 | error ("No executable file name was specified"); | |
309 | ||
310 | filename = tilde_expand (*argv); | |
311 | make_cleanup (xfree, filename); | |
312 | exec_file_attach (filename, from_tty); | |
313 | } | |
314 | else | |
315 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
316 | } |
317 | ||
318 | /* Set both the exec file and the symbol file, in one command. | |
319 | What a novelty. Why did GDB go through four major releases before this | |
320 | command was added? */ | |
321 | ||
322 | static void | |
fba45db2 | 323 | file_command (char *arg, int from_tty) |
c906108c SS |
324 | { |
325 | /* FIXME, if we lose on reading the symbol file, we should revert | |
326 | the exec file, but that's rough. */ | |
327 | exec_file_command (arg, from_tty); | |
328 | symbol_file_command (arg, from_tty); | |
329 | if (file_changed_hook) | |
330 | file_changed_hook (arg); | |
331 | } | |
c906108c | 332 | \f |
c5aa993b | 333 | |
c906108c SS |
334 | /* Locate all mappable sections of a BFD file. |
335 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
336 | we cast it back to its proper type. */ | |
337 | ||
338 | static void | |
4efb68b1 | 339 | add_to_section_table (bfd *abfd, sec_ptr asect, void *table_pp_char) |
c906108c | 340 | { |
c5aa993b | 341 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
342 | flagword aflag; |
343 | ||
344 | aflag = bfd_get_section_flags (abfd, asect); | |
345 | if (!(aflag & SEC_ALLOC)) | |
346 | return; | |
347 | if (0 == bfd_section_size (abfd, asect)) | |
348 | return; | |
349 | (*table_pp)->bfd = abfd; | |
350 | (*table_pp)->the_bfd_section = asect; | |
351 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
352 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
353 | (*table_pp)++; | |
354 | } | |
355 | ||
356 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
357 | Returns 0 if OK, 1 on error. */ | |
358 | ||
359 | int | |
fba45db2 KB |
360 | build_section_table (bfd *some_bfd, struct section_table **start, |
361 | struct section_table **end) | |
c906108c SS |
362 | { |
363 | unsigned count; | |
364 | ||
365 | count = bfd_count_sections (some_bfd); | |
366 | if (*start) | |
b8c9b27d | 367 | xfree (* start); |
c906108c SS |
368 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
369 | *end = *start; | |
c5aa993b | 370 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 371 | if (*end > *start + count) |
e1e9e218 | 372 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
373 | /* We could realloc the table, but it probably loses for most files. */ |
374 | return 0; | |
375 | } | |
376 | \f | |
377 | static void | |
4efb68b1 | 378 | bfdsec_to_vmap (bfd *abfd, sec_ptr sect, void *arg3) |
c906108c SS |
379 | { |
380 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
381 | struct vmap *vp; | |
382 | ||
383 | vp = vmap_bfd->pvmap; | |
384 | ||
385 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
386 | return; | |
387 | ||
388 | if (STREQ (bfd_section_name (abfd, sect), ".text")) | |
389 | { | |
390 | vp->tstart = bfd_section_vma (abfd, sect); | |
391 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
392 | vp->tvma = bfd_section_vma (abfd, sect); | |
393 | vp->toffs = sect->filepos; | |
394 | } | |
395 | else if (STREQ (bfd_section_name (abfd, sect), ".data")) | |
396 | { | |
397 | vp->dstart = bfd_section_vma (abfd, sect); | |
398 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
399 | vp->dvma = bfd_section_vma (abfd, sect); | |
400 | } | |
401 | /* Silently ignore other types of sections. (FIXME?) */ | |
402 | } | |
403 | ||
404 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
405 | Return the new vmap. */ | |
406 | ||
407 | struct vmap * | |
fba45db2 | 408 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
409 | { |
410 | struct vmap_and_bfd vmap_bfd; | |
411 | struct vmap *vp, **vpp; | |
412 | ||
413 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
414 | memset ((char *) vp, '\0', sizeof (*vp)); | |
415 | vp->nxt = 0; | |
416 | vp->bfd = abfd; | |
417 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
418 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 419 | |
c906108c SS |
420 | vmap_bfd.pbfd = arch; |
421 | vmap_bfd.pvmap = vp; | |
422 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
423 | ||
424 | /* Find the end of the list and append. */ | |
425 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
426 | ; | |
427 | *vpp = vp; | |
428 | ||
429 | return vp; | |
430 | } | |
431 | \f | |
432 | /* Read or write the exec file. | |
433 | ||
434 | Args are address within a BFD file, address within gdb address-space, | |
435 | length, and a flag indicating whether to read or write. | |
436 | ||
437 | Result is a length: | |
438 | ||
c5aa993b JM |
439 | 0: We cannot handle this address and length. |
440 | > 0: We have handled N bytes starting at this address. | |
441 | (If N == length, we did it all.) We might be able | |
442 | to handle more bytes beyond this length, but no | |
443 | promises. | |
444 | < 0: We cannot handle this address, but if somebody | |
445 | else handles (-N) bytes, we can start from there. | |
c906108c | 446 | |
c5aa993b JM |
447 | The same routine is used to handle both core and exec files; |
448 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
449 | |
450 | int | |
fba45db2 | 451 | xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 | 452 | struct mem_attrib *attrib, |
fba45db2 | 453 | struct target_ops *target) |
c906108c | 454 | { |
020cc13c | 455 | int res; |
c906108c SS |
456 | struct section_table *p; |
457 | CORE_ADDR nextsectaddr, memend; | |
4efb68b1 | 458 | int (*xfer_fn) (bfd *, sec_ptr, void *, file_ptr, bfd_size_type); |
88665544 | 459 | asection *section = NULL; |
c906108c SS |
460 | |
461 | if (len <= 0) | |
e1e9e218 | 462 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
463 | |
464 | if (overlay_debugging) | |
465 | { | |
466 | section = find_pc_overlay (memaddr); | |
467 | if (pc_in_unmapped_range (memaddr, section)) | |
468 | memaddr = overlay_mapped_address (memaddr, section); | |
469 | } | |
470 | ||
471 | memend = memaddr + len; | |
472 | xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents; | |
473 | nextsectaddr = memend; | |
474 | ||
c906108c SS |
475 | for (p = target->to_sections; p < target->to_sections_end; p++) |
476 | { | |
477 | if (overlay_debugging && section && p->the_bfd_section && | |
478 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
c5aa993b | 479 | continue; /* not the section we need */ |
c906108c | 480 | if (memaddr >= p->addr) |
3db26b01 JB |
481 | { |
482 | if (memend <= p->endaddr) | |
483 | { | |
484 | /* Entire transfer is within this section. */ | |
485 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
486 | memaddr - p->addr, len); | |
487 | return (res != 0) ? len : 0; | |
488 | } | |
489 | else if (memaddr >= p->endaddr) | |
490 | { | |
491 | /* This section ends before the transfer starts. */ | |
492 | continue; | |
493 | } | |
494 | else | |
495 | { | |
496 | /* This section overlaps the transfer. Just do half. */ | |
497 | len = p->endaddr - memaddr; | |
498 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
499 | memaddr - p->addr, len); | |
500 | return (res != 0) ? len : 0; | |
501 | } | |
502 | } | |
c906108c SS |
503 | else |
504 | nextsectaddr = min (nextsectaddr, p->addr); | |
505 | } | |
506 | ||
507 | if (nextsectaddr >= memend) | |
c5aa993b | 508 | return 0; /* We can't help */ |
c906108c | 509 | else |
c5aa993b | 510 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 511 | } |
c906108c | 512 | \f |
c5aa993b | 513 | |
c906108c | 514 | void |
fba45db2 | 515 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
516 | { |
517 | struct section_table *p; | |
bcf16802 | 518 | /* FIXME: "016l" is not wide enough when TARGET_ADDR_BIT > 64. */ |
2fc70c99 | 519 | char *fmt = TARGET_ADDR_BIT <= 32 ? "08l" : "016l"; |
c906108c | 520 | |
c5aa993b | 521 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 522 | wrap_here (" "); |
c5aa993b | 523 | printf_filtered ("file type %s.\n", bfd_get_target (abfd)); |
c906108c SS |
524 | if (abfd == exec_bfd) |
525 | { | |
526 | printf_filtered ("\tEntry point: "); | |
527 | print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); | |
528 | printf_filtered ("\n"); | |
529 | } | |
530 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
531 | { | |
2fc70c99 KB |
532 | printf_filtered ("\t%s", local_hex_string_custom (p->addr, fmt)); |
533 | printf_filtered (" - %s", local_hex_string_custom (p->endaddr, fmt)); | |
bcf16802 KB |
534 | |
535 | /* FIXME: A format of "08l" is not wide enough for file offsets | |
536 | larger than 4GB. OTOH, making it "016l" isn't desirable either | |
537 | since most output will then be much wider than necessary. It | |
538 | may make sense to test the size of the file and choose the | |
539 | format string accordingly. */ | |
c906108c SS |
540 | if (info_verbose) |
541 | printf_filtered (" @ %s", | |
2fc70c99 | 542 | local_hex_string_custom (p->the_bfd_section->filepos, "08l")); |
c906108c SS |
543 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
544 | if (p->bfd != abfd) | |
545 | { | |
546 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); | |
547 | } | |
548 | printf_filtered ("\n"); | |
549 | } | |
550 | } | |
551 | ||
552 | static void | |
fba45db2 | 553 | exec_files_info (struct target_ops *t) |
c906108c SS |
554 | { |
555 | print_section_info (t, exec_bfd); | |
556 | ||
557 | if (vmap) | |
558 | { | |
559 | struct vmap *vp; | |
560 | ||
561 | printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name); | |
d4f3574e SS |
562 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
563 | strlen_paddr (), "tstart", | |
564 | strlen_paddr (), "tend", | |
565 | strlen_paddr (), "dstart", | |
566 | strlen_paddr (), "dend", | |
567 | "section", | |
c5aa993b JM |
568 | "file(member)"); |
569 | ||
570 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
571 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
572 | paddr (vp->tstart), | |
573 | paddr (vp->tend), | |
574 | paddr (vp->dstart), | |
575 | paddr (vp->dend), | |
576 | vp->name, | |
c5aa993b JM |
577 | *vp->member ? "(" : "", vp->member, |
578 | *vp->member ? ")" : ""); | |
c906108c SS |
579 | } |
580 | } | |
581 | ||
0f71a2f6 JM |
582 | /* msnyder 5/21/99: |
583 | exec_set_section_offsets sets the offsets of all the sections | |
584 | in the exec objfile. */ | |
585 | ||
586 | void | |
fba45db2 KB |
587 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
588 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
589 | { |
590 | struct section_table *sect; | |
c5aa993b JM |
591 | |
592 | for (sect = exec_ops.to_sections; | |
593 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
594 | sect++) |
595 | { | |
596 | flagword flags; | |
597 | ||
598 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
599 | ||
600 | if (flags & SEC_CODE) | |
601 | { | |
c5aa993b | 602 | sect->addr += text_off; |
0f71a2f6 JM |
603 | sect->endaddr += text_off; |
604 | } | |
605 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
606 | { | |
c5aa993b | 607 | sect->addr += data_off; |
0f71a2f6 JM |
608 | sect->endaddr += data_off; |
609 | } | |
610 | else if (flags & SEC_ALLOC) | |
611 | { | |
c5aa993b | 612 | sect->addr += bss_off; |
0f71a2f6 JM |
613 | sect->endaddr += bss_off; |
614 | } | |
615 | } | |
616 | } | |
617 | ||
c906108c | 618 | static void |
fba45db2 | 619 | set_section_command (char *args, int from_tty) |
c906108c SS |
620 | { |
621 | struct section_table *p; | |
622 | char *secname; | |
623 | unsigned seclen; | |
624 | unsigned long secaddr; | |
625 | char secprint[100]; | |
626 | long offset; | |
627 | ||
628 | if (args == 0) | |
629 | error ("Must specify section name and its virtual address"); | |
630 | ||
631 | /* Parse out section name */ | |
c5aa993b | 632 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
633 | seclen = args - secname; |
634 | ||
635 | /* Parse out new virtual address */ | |
636 | secaddr = parse_and_eval_address (args); | |
637 | ||
c5aa993b JM |
638 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
639 | { | |
640 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
641 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
642 | { | |
643 | offset = secaddr - p->addr; | |
644 | p->addr += offset; | |
645 | p->endaddr += offset; | |
646 | if (from_tty) | |
647 | exec_files_info (&exec_ops); | |
648 | return; | |
649 | } | |
c906108c | 650 | } |
c906108c SS |
651 | if (seclen >= sizeof (secprint)) |
652 | seclen = sizeof (secprint) - 1; | |
653 | strncpy (secprint, secname, seclen); | |
654 | secprint[seclen] = '\0'; | |
655 | error ("Section %s not found", secprint); | |
656 | } | |
657 | ||
658 | /* If mourn is being called in all the right places, this could be say | |
659 | `gdb internal error' (since generic_mourn calls | |
660 | breakpoint_init_inferior). */ | |
661 | ||
662 | static int | |
fba45db2 | 663 | ignore (CORE_ADDR addr, char *contents) |
c906108c SS |
664 | { |
665 | return 0; | |
666 | } | |
667 | ||
be4d1333 MS |
668 | /* Find mapped memory. */ |
669 | ||
670 | extern void | |
671 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
672 | unsigned long, | |
673 | int, int, int, | |
674 | void *), | |
675 | void *)) | |
676 | { | |
677 | exec_ops.to_find_memory_regions = func; | |
678 | } | |
679 | ||
680 | static char *exec_make_note_section (bfd *, int *); | |
681 | ||
c906108c SS |
682 | /* Fill in the exec file target vector. Very few entries need to be |
683 | defined. */ | |
684 | ||
be4d1333 | 685 | static void |
fba45db2 | 686 | init_exec_ops (void) |
c906108c SS |
687 | { |
688 | exec_ops.to_shortname = "exec"; | |
689 | exec_ops.to_longname = "Local exec file"; | |
690 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
691 | Specify the filename of the executable file."; | |
1adeb98a | 692 | exec_ops.to_open = exec_open; |
c906108c SS |
693 | exec_ops.to_close = exec_close; |
694 | exec_ops.to_attach = find_default_attach; | |
c906108c SS |
695 | exec_ops.to_xfer_memory = xfer_memory; |
696 | exec_ops.to_files_info = exec_files_info; | |
697 | exec_ops.to_insert_breakpoint = ignore; | |
698 | exec_ops.to_remove_breakpoint = ignore; | |
699 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
700 | exec_ops.to_stratum = file_stratum; |
701 | exec_ops.to_has_memory = 1; | |
be4d1333 | 702 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 703 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
704 | } |
705 | ||
706 | void | |
fba45db2 | 707 | _initialize_exec (void) |
c906108c SS |
708 | { |
709 | struct cmd_list_element *c; | |
710 | ||
711 | init_exec_ops (); | |
712 | ||
713 | if (!dbx_commands) | |
714 | { | |
715 | c = add_cmd ("file", class_files, file_command, | |
716 | "Use FILE as program to be debugged.\n\ | |
717 | It is read for its symbols, for getting the contents of pure memory,\n\ | |
718 | and it is the program executed when you use the `run' command.\n\ | |
719 | If FILE cannot be found as specified, your execution directory path\n\ | |
720 | ($PATH) is searched for a command of that name.\n\ | |
721 | No arg means to have no executable file and no symbols.", &cmdlist); | |
5ba2abeb | 722 | set_cmd_completer (c, filename_completer); |
c906108c SS |
723 | } |
724 | ||
725 | c = add_cmd ("exec-file", class_files, exec_file_command, | |
c5aa993b | 726 | "Use FILE as program for getting contents of pure memory.\n\ |
c906108c SS |
727 | If FILE cannot be found as specified, your execution directory path\n\ |
728 | is searched for a command of that name.\n\ | |
729 | No arg means have no executable file.", &cmdlist); | |
5ba2abeb | 730 | set_cmd_completer (c, filename_completer); |
c906108c SS |
731 | |
732 | add_com ("section", class_files, set_section_command, | |
c5aa993b | 733 | "Change the base address of section SECTION of the exec file to ADDR.\n\ |
c906108c SS |
734 | This can be used if the exec file does not contain section addresses,\n\ |
735 | (such as in the a.out format), or when the addresses specified in the\n\ | |
736 | file itself are wrong. Each section must be changed separately. The\n\ | |
737 | ``info files'' command lists all the sections and their addresses."); | |
738 | ||
739 | add_show_from_set | |
c5aa993b | 740 | (add_set_cmd ("write", class_support, var_boolean, (char *) &write_files, |
c906108c SS |
741 | "Set writing into executable and core files.", |
742 | &setlist), | |
743 | &showlist); | |
c5aa993b | 744 | |
c906108c SS |
745 | add_target (&exec_ops); |
746 | } | |
be4d1333 MS |
747 | |
748 | static char * | |
749 | exec_make_note_section (bfd *obfd, int *note_size) | |
750 | { | |
c564377f | 751 | error ("Can't create a corefile"); |
be4d1333 | 752 | } |