Commit | Line | Data |
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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 | ||
a14ed312 | 58 | static void add_to_section_table (bfd *, sec_ptr, PTR); |
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 | |
a14ed312 | 68 | static void bfdsec_to_vmap (bfd *, sec_ptr, PTR); |
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 | ||
88 | /* Text start and end addresses (KLUDGE) if needed */ | |
89 | ||
90 | #ifndef NEED_TEXT_START_END | |
91 | #define NEED_TEXT_START_END (0) | |
92 | #endif | |
93 | CORE_ADDR text_start = 0; | |
c5aa993b | 94 | CORE_ADDR text_end = 0; |
c906108c SS |
95 | |
96 | struct vmap *vmap; | |
97 | ||
1adeb98a FN |
98 | void |
99 | exec_open (char *args, int from_tty) | |
100 | { | |
101 | target_preopen (from_tty); | |
102 | exec_file_attach (args, from_tty); | |
103 | } | |
104 | ||
c906108c SS |
105 | /* ARGSUSED */ |
106 | static void | |
fba45db2 | 107 | exec_close (int quitting) |
c906108c SS |
108 | { |
109 | int need_symtab_cleanup = 0; | |
110 | struct vmap *vp, *nxt; | |
c5aa993b JM |
111 | |
112 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
113 | { |
114 | vp = nxt; | |
115 | nxt = vp->nxt; | |
116 | ||
117 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
118 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
119 | ||
c906108c SS |
120 | if (vp->objfile) |
121 | { | |
122 | free_objfile (vp->objfile); | |
123 | need_symtab_cleanup = 1; | |
124 | } | |
125 | else if (vp->bfd != exec_bfd) | |
126 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
127 | if (!bfd_close (vp->bfd)) | |
128 | warning ("cannot close \"%s\": %s", | |
129 | vp->name, bfd_errmsg (bfd_get_error ())); | |
130 | ||
131 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
132 | be doing here? Should we just free everything in |
133 | vp->objfile->symtabs? Should free_objfile do that? | |
134 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
135 | valid here. */ | |
c906108c | 136 | free_named_symtabs (vp->name); |
b8c9b27d | 137 | xfree (vp); |
c906108c SS |
138 | } |
139 | ||
140 | vmap = NULL; | |
141 | ||
142 | if (exec_bfd) | |
143 | { | |
144 | char *name = bfd_get_filename (exec_bfd); | |
145 | ||
146 | if (!bfd_close (exec_bfd)) | |
147 | warning ("cannot close \"%s\": %s", | |
148 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 149 | xfree (name); |
c906108c SS |
150 | exec_bfd = NULL; |
151 | } | |
152 | ||
153 | if (exec_ops.to_sections) | |
154 | { | |
b8c9b27d | 155 | xfree (exec_ops.to_sections); |
c906108c SS |
156 | exec_ops.to_sections = NULL; |
157 | exec_ops.to_sections_end = NULL; | |
158 | } | |
159 | } | |
160 | ||
1adeb98a FN |
161 | void |
162 | exec_file_clear (int from_tty) | |
163 | { | |
164 | /* Remove exec file. */ | |
165 | unpush_target (&exec_ops); | |
166 | ||
167 | if (from_tty) | |
168 | printf_unfiltered ("No executable file now.\n"); | |
169 | } | |
170 | ||
c906108c SS |
171 | /* Process the first arg in ARGS as the new exec file. |
172 | ||
c5aa993b JM |
173 | This function is intended to be behave essentially the same |
174 | as exec_file_command, except that the latter will detect when | |
175 | a target is being debugged, and will ask the user whether it | |
176 | should be shut down first. (If the answer is "no", then the | |
177 | new file is ignored.) | |
c906108c | 178 | |
c5aa993b JM |
179 | This file is used by exec_file_command, to do the work of opening |
180 | and processing the exec file after any prompting has happened. | |
c906108c | 181 | |
c5aa993b JM |
182 | And, it is used by child_attach, when the attach command was |
183 | given a pid but not a exec pathname, and the attach command could | |
184 | figure out the pathname from the pid. (In this case, we shouldn't | |
185 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
186 | we're supplying the exec pathname late for good reason.) |
187 | ||
188 | ARGS is assumed to be the filename. */ | |
c906108c SS |
189 | |
190 | void | |
1adeb98a | 191 | exec_file_attach (char *filename, int from_tty) |
c906108c | 192 | { |
c906108c SS |
193 | /* Remove any previous exec file. */ |
194 | unpush_target (&exec_ops); | |
195 | ||
196 | /* Now open and digest the file the user requested, if any. */ | |
197 | ||
1adeb98a FN |
198 | if (!filename) |
199 | { | |
200 | if (from_tty) | |
201 | printf_unfiltered ("No executable file now.\n"); | |
202 | } | |
203 | else | |
c906108c SS |
204 | { |
205 | char *scratch_pathname; | |
206 | int scratch_chan; | |
c5aa993b | 207 | |
c5aa993b JM |
208 | scratch_chan = openp (getenv ("PATH"), 1, filename, |
209 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
c906108c | 210 | &scratch_pathname); |
cfc3008e | 211 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 212 | if (scratch_chan < 0) |
c5aa993b JM |
213 | { |
214 | char *exename = alloca (strlen (filename) + 5); | |
215 | strcat (strcpy (exename, filename), ".exe"); | |
216 | scratch_chan = openp (getenv ("PATH"), 1, exename, write_files ? | |
217 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, &scratch_pathname); | |
218 | } | |
c906108c SS |
219 | #endif |
220 | if (scratch_chan < 0) | |
221 | perror_with_name (filename); | |
222 | exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); | |
223 | ||
224 | if (!exec_bfd) | |
225 | error ("\"%s\": could not open as an executable file: %s", | |
226 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
227 | ||
228 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
c5aa993b JM |
229 | same malloc'd string. However exec_close() will attempt to free it |
230 | via the exec_bfd->name pointer, so we need to make another copy and | |
231 | leave exec_bfd as the new owner of the original copy. */ | |
c2d11a7d | 232 | scratch_pathname = xstrdup (scratch_pathname); |
b8c9b27d | 233 | make_cleanup (xfree, scratch_pathname); |
c5aa993b | 234 | |
c906108c SS |
235 | if (!bfd_check_format (exec_bfd, bfd_object)) |
236 | { | |
237 | /* Make sure to close exec_bfd, or else "run" might try to use | |
238 | it. */ | |
239 | exec_close (0); | |
240 | error ("\"%s\": not in executable format: %s", | |
241 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
242 | } | |
243 | ||
244 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 245 | way to accomplish. */ |
c906108c SS |
246 | #ifdef IBM6000_TARGET |
247 | /* Setup initial vmap. */ | |
248 | ||
249 | map_vmap (exec_bfd, 0); | |
250 | if (vmap == NULL) | |
251 | { | |
252 | /* Make sure to close exec_bfd, or else "run" might try to use | |
253 | it. */ | |
254 | exec_close (0); | |
255 | error ("\"%s\": can't find the file sections: %s", | |
256 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
257 | } | |
258 | #endif /* IBM6000_TARGET */ | |
259 | ||
260 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
c5aa993b | 261 | &exec_ops.to_sections_end)) |
c906108c SS |
262 | { |
263 | /* Make sure to close exec_bfd, or else "run" might try to use | |
264 | it. */ | |
265 | exec_close (0); | |
c5aa993b | 266 | error ("\"%s\": can't find the file sections: %s", |
c906108c SS |
267 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
268 | } | |
269 | ||
270 | /* text_end is sometimes used for where to put call dummies. A | |
c5aa993b | 271 | few ports use these for other purposes too. */ |
c906108c SS |
272 | if (NEED_TEXT_START_END) |
273 | { | |
274 | struct section_table *p; | |
c5aa993b | 275 | |
c906108c SS |
276 | /* Set text_start to the lowest address of the start of any |
277 | readonly code section and set text_end to the highest | |
278 | address of the end of any readonly code section. */ | |
279 | /* FIXME: The comment above does not match the code. The | |
280 | code checks for sections with are either code *or* | |
281 | readonly. */ | |
c5aa993b JM |
282 | text_start = ~(CORE_ADDR) 0; |
283 | text_end = (CORE_ADDR) 0; | |
c906108c SS |
284 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
285 | if (bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
286 | & (SEC_CODE | SEC_READONLY)) | |
287 | { | |
c5aa993b | 288 | if (text_start > p->addr) |
c906108c SS |
289 | text_start = p->addr; |
290 | if (text_end < p->endaddr) | |
291 | text_end = p->endaddr; | |
292 | } | |
293 | } | |
294 | ||
295 | validate_files (); | |
296 | ||
297 | set_gdbarch_from_file (exec_bfd); | |
298 | ||
299 | push_target (&exec_ops); | |
300 | ||
301 | /* Tell display code (if any) about the changed file name. */ | |
302 | if (exec_file_display_hook) | |
303 | (*exec_file_display_hook) (filename); | |
304 | } | |
c906108c SS |
305 | } |
306 | ||
307 | /* Process the first arg in ARGS as the new exec file. | |
308 | ||
c5aa993b JM |
309 | Note that we have to explicitly ignore additional args, since we can |
310 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
311 | which can take multiple args. |
312 | ||
313 | If ARGS is NULL, we just want to close the exec file. */ | |
c906108c | 314 | |
1adeb98a | 315 | static void |
fba45db2 | 316 | exec_file_command (char *args, int from_tty) |
c906108c | 317 | { |
1adeb98a FN |
318 | char **argv; |
319 | char *filename; | |
320 | ||
c906108c | 321 | target_preopen (from_tty); |
1adeb98a FN |
322 | |
323 | if (args) | |
324 | { | |
325 | /* Scan through the args and pick up the first non option arg | |
326 | as the filename. */ | |
327 | ||
328 | argv = buildargv (args); | |
329 | if (argv == NULL) | |
330 | nomem (0); | |
331 | ||
332 | make_cleanup_freeargv (argv); | |
333 | ||
334 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
335 | {; | |
336 | } | |
337 | if (*argv == NULL) | |
338 | error ("No executable file name was specified"); | |
339 | ||
340 | filename = tilde_expand (*argv); | |
341 | make_cleanup (xfree, filename); | |
342 | exec_file_attach (filename, from_tty); | |
343 | } | |
344 | else | |
345 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
346 | } |
347 | ||
348 | /* Set both the exec file and the symbol file, in one command. | |
349 | What a novelty. Why did GDB go through four major releases before this | |
350 | command was added? */ | |
351 | ||
352 | static void | |
fba45db2 | 353 | file_command (char *arg, int from_tty) |
c906108c SS |
354 | { |
355 | /* FIXME, if we lose on reading the symbol file, we should revert | |
356 | the exec file, but that's rough. */ | |
357 | exec_file_command (arg, from_tty); | |
358 | symbol_file_command (arg, from_tty); | |
359 | if (file_changed_hook) | |
360 | file_changed_hook (arg); | |
361 | } | |
c906108c | 362 | \f |
c5aa993b | 363 | |
c906108c SS |
364 | /* Locate all mappable sections of a BFD file. |
365 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
366 | we cast it back to its proper type. */ | |
367 | ||
368 | static void | |
fba45db2 | 369 | add_to_section_table (bfd *abfd, sec_ptr asect, PTR table_pp_char) |
c906108c | 370 | { |
c5aa993b | 371 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
372 | flagword aflag; |
373 | ||
374 | aflag = bfd_get_section_flags (abfd, asect); | |
375 | if (!(aflag & SEC_ALLOC)) | |
376 | return; | |
377 | if (0 == bfd_section_size (abfd, asect)) | |
378 | return; | |
379 | (*table_pp)->bfd = abfd; | |
380 | (*table_pp)->the_bfd_section = asect; | |
381 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
382 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
383 | (*table_pp)++; | |
384 | } | |
385 | ||
386 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
387 | Returns 0 if OK, 1 on error. */ | |
388 | ||
389 | int | |
fba45db2 KB |
390 | build_section_table (bfd *some_bfd, struct section_table **start, |
391 | struct section_table **end) | |
c906108c SS |
392 | { |
393 | unsigned count; | |
394 | ||
395 | count = bfd_count_sections (some_bfd); | |
396 | if (*start) | |
b8c9b27d | 397 | xfree (* start); |
c906108c SS |
398 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
399 | *end = *start; | |
c5aa993b | 400 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 401 | if (*end > *start + count) |
e1e9e218 | 402 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
403 | /* We could realloc the table, but it probably loses for most files. */ |
404 | return 0; | |
405 | } | |
406 | \f | |
407 | static void | |
fba45db2 | 408 | bfdsec_to_vmap (bfd *abfd, sec_ptr sect, PTR arg3) |
c906108c SS |
409 | { |
410 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
411 | struct vmap *vp; | |
412 | ||
413 | vp = vmap_bfd->pvmap; | |
414 | ||
415 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
416 | return; | |
417 | ||
418 | if (STREQ (bfd_section_name (abfd, sect), ".text")) | |
419 | { | |
420 | vp->tstart = bfd_section_vma (abfd, sect); | |
421 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
422 | vp->tvma = bfd_section_vma (abfd, sect); | |
423 | vp->toffs = sect->filepos; | |
424 | } | |
425 | else if (STREQ (bfd_section_name (abfd, sect), ".data")) | |
426 | { | |
427 | vp->dstart = bfd_section_vma (abfd, sect); | |
428 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
429 | vp->dvma = bfd_section_vma (abfd, sect); | |
430 | } | |
431 | /* Silently ignore other types of sections. (FIXME?) */ | |
432 | } | |
433 | ||
434 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
435 | Return the new vmap. */ | |
436 | ||
437 | struct vmap * | |
fba45db2 | 438 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
439 | { |
440 | struct vmap_and_bfd vmap_bfd; | |
441 | struct vmap *vp, **vpp; | |
442 | ||
443 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
444 | memset ((char *) vp, '\0', sizeof (*vp)); | |
445 | vp->nxt = 0; | |
446 | vp->bfd = abfd; | |
447 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
448 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 449 | |
c906108c SS |
450 | vmap_bfd.pbfd = arch; |
451 | vmap_bfd.pvmap = vp; | |
452 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
453 | ||
454 | /* Find the end of the list and append. */ | |
455 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
456 | ; | |
457 | *vpp = vp; | |
458 | ||
459 | return vp; | |
460 | } | |
461 | \f | |
462 | /* Read or write the exec file. | |
463 | ||
464 | Args are address within a BFD file, address within gdb address-space, | |
465 | length, and a flag indicating whether to read or write. | |
466 | ||
467 | Result is a length: | |
468 | ||
c5aa993b JM |
469 | 0: We cannot handle this address and length. |
470 | > 0: We have handled N bytes starting at this address. | |
471 | (If N == length, we did it all.) We might be able | |
472 | to handle more bytes beyond this length, but no | |
473 | promises. | |
474 | < 0: We cannot handle this address, but if somebody | |
475 | else handles (-N) bytes, we can start from there. | |
c906108c | 476 | |
c5aa993b JM |
477 | The same routine is used to handle both core and exec files; |
478 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
479 | |
480 | int | |
fba45db2 | 481 | xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 | 482 | struct mem_attrib *attrib, |
fba45db2 | 483 | struct target_ops *target) |
c906108c | 484 | { |
020cc13c | 485 | int res; |
c906108c SS |
486 | struct section_table *p; |
487 | CORE_ADDR nextsectaddr, memend; | |
020cc13c | 488 | int (*xfer_fn) (bfd *, sec_ptr, PTR, file_ptr, bfd_size_type); |
88665544 | 489 | asection *section = NULL; |
c906108c SS |
490 | |
491 | if (len <= 0) | |
e1e9e218 | 492 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
493 | |
494 | if (overlay_debugging) | |
495 | { | |
496 | section = find_pc_overlay (memaddr); | |
497 | if (pc_in_unmapped_range (memaddr, section)) | |
498 | memaddr = overlay_mapped_address (memaddr, section); | |
499 | } | |
500 | ||
501 | memend = memaddr + len; | |
502 | xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents; | |
503 | nextsectaddr = memend; | |
504 | ||
c906108c SS |
505 | for (p = target->to_sections; p < target->to_sections_end; p++) |
506 | { | |
507 | if (overlay_debugging && section && p->the_bfd_section && | |
508 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
c5aa993b | 509 | continue; /* not the section we need */ |
c906108c | 510 | if (memaddr >= p->addr) |
3db26b01 JB |
511 | { |
512 | if (memend <= p->endaddr) | |
513 | { | |
514 | /* Entire transfer is within this section. */ | |
515 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
516 | memaddr - p->addr, len); | |
517 | return (res != 0) ? len : 0; | |
518 | } | |
519 | else if (memaddr >= p->endaddr) | |
520 | { | |
521 | /* This section ends before the transfer starts. */ | |
522 | continue; | |
523 | } | |
524 | else | |
525 | { | |
526 | /* This section overlaps the transfer. Just do half. */ | |
527 | len = p->endaddr - memaddr; | |
528 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
529 | memaddr - p->addr, len); | |
530 | return (res != 0) ? len : 0; | |
531 | } | |
532 | } | |
c906108c SS |
533 | else |
534 | nextsectaddr = min (nextsectaddr, p->addr); | |
535 | } | |
536 | ||
537 | if (nextsectaddr >= memend) | |
c5aa993b | 538 | return 0; /* We can't help */ |
c906108c | 539 | else |
c5aa993b | 540 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 541 | } |
c906108c | 542 | \f |
c5aa993b | 543 | |
c906108c | 544 | void |
fba45db2 | 545 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
546 | { |
547 | struct section_table *p; | |
2fc70c99 | 548 | char *fmt = TARGET_ADDR_BIT <= 32 ? "08l" : "016l"; |
c906108c | 549 | |
c5aa993b | 550 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 551 | wrap_here (" "); |
c5aa993b | 552 | printf_filtered ("file type %s.\n", bfd_get_target (abfd)); |
c906108c SS |
553 | if (abfd == exec_bfd) |
554 | { | |
555 | printf_filtered ("\tEntry point: "); | |
556 | print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); | |
557 | printf_filtered ("\n"); | |
558 | } | |
559 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
560 | { | |
561 | /* FIXME-32x64 need a print_address_numeric with field width */ | |
2fc70c99 KB |
562 | printf_filtered ("\t%s", local_hex_string_custom (p->addr, fmt)); |
563 | printf_filtered (" - %s", local_hex_string_custom (p->endaddr, fmt)); | |
c906108c SS |
564 | if (info_verbose) |
565 | printf_filtered (" @ %s", | |
2fc70c99 | 566 | local_hex_string_custom (p->the_bfd_section->filepos, "08l")); |
c906108c SS |
567 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); |
568 | if (p->bfd != abfd) | |
569 | { | |
570 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); | |
571 | } | |
572 | printf_filtered ("\n"); | |
573 | } | |
574 | } | |
575 | ||
576 | static void | |
fba45db2 | 577 | exec_files_info (struct target_ops *t) |
c906108c SS |
578 | { |
579 | print_section_info (t, exec_bfd); | |
580 | ||
581 | if (vmap) | |
582 | { | |
583 | struct vmap *vp; | |
584 | ||
585 | printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name); | |
d4f3574e SS |
586 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
587 | strlen_paddr (), "tstart", | |
588 | strlen_paddr (), "tend", | |
589 | strlen_paddr (), "dstart", | |
590 | strlen_paddr (), "dend", | |
591 | "section", | |
c5aa993b JM |
592 | "file(member)"); |
593 | ||
594 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
595 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
596 | paddr (vp->tstart), | |
597 | paddr (vp->tend), | |
598 | paddr (vp->dstart), | |
599 | paddr (vp->dend), | |
600 | vp->name, | |
c5aa993b JM |
601 | *vp->member ? "(" : "", vp->member, |
602 | *vp->member ? ")" : ""); | |
c906108c SS |
603 | } |
604 | } | |
605 | ||
0f71a2f6 JM |
606 | /* msnyder 5/21/99: |
607 | exec_set_section_offsets sets the offsets of all the sections | |
608 | in the exec objfile. */ | |
609 | ||
610 | void | |
fba45db2 KB |
611 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
612 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
613 | { |
614 | struct section_table *sect; | |
c5aa993b JM |
615 | |
616 | for (sect = exec_ops.to_sections; | |
617 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
618 | sect++) |
619 | { | |
620 | flagword flags; | |
621 | ||
622 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
623 | ||
624 | if (flags & SEC_CODE) | |
625 | { | |
c5aa993b | 626 | sect->addr += text_off; |
0f71a2f6 JM |
627 | sect->endaddr += text_off; |
628 | } | |
629 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
630 | { | |
c5aa993b | 631 | sect->addr += data_off; |
0f71a2f6 JM |
632 | sect->endaddr += data_off; |
633 | } | |
634 | else if (flags & SEC_ALLOC) | |
635 | { | |
c5aa993b | 636 | sect->addr += bss_off; |
0f71a2f6 JM |
637 | sect->endaddr += bss_off; |
638 | } | |
639 | } | |
640 | } | |
641 | ||
c906108c | 642 | static void |
fba45db2 | 643 | set_section_command (char *args, int from_tty) |
c906108c SS |
644 | { |
645 | struct section_table *p; | |
646 | char *secname; | |
647 | unsigned seclen; | |
648 | unsigned long secaddr; | |
649 | char secprint[100]; | |
650 | long offset; | |
651 | ||
652 | if (args == 0) | |
653 | error ("Must specify section name and its virtual address"); | |
654 | ||
655 | /* Parse out section name */ | |
c5aa993b | 656 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
657 | seclen = args - secname; |
658 | ||
659 | /* Parse out new virtual address */ | |
660 | secaddr = parse_and_eval_address (args); | |
661 | ||
c5aa993b JM |
662 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
663 | { | |
664 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
665 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
666 | { | |
667 | offset = secaddr - p->addr; | |
668 | p->addr += offset; | |
669 | p->endaddr += offset; | |
670 | if (from_tty) | |
671 | exec_files_info (&exec_ops); | |
672 | return; | |
673 | } | |
c906108c | 674 | } |
c906108c SS |
675 | if (seclen >= sizeof (secprint)) |
676 | seclen = sizeof (secprint) - 1; | |
677 | strncpy (secprint, secname, seclen); | |
678 | secprint[seclen] = '\0'; | |
679 | error ("Section %s not found", secprint); | |
680 | } | |
681 | ||
682 | /* If mourn is being called in all the right places, this could be say | |
683 | `gdb internal error' (since generic_mourn calls | |
684 | breakpoint_init_inferior). */ | |
685 | ||
686 | static int | |
fba45db2 | 687 | ignore (CORE_ADDR addr, char *contents) |
c906108c SS |
688 | { |
689 | return 0; | |
690 | } | |
691 | ||
be4d1333 MS |
692 | /* Find mapped memory. */ |
693 | ||
694 | extern void | |
695 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
696 | unsigned long, | |
697 | int, int, int, | |
698 | void *), | |
699 | void *)) | |
700 | { | |
701 | exec_ops.to_find_memory_regions = func; | |
702 | } | |
703 | ||
704 | static char *exec_make_note_section (bfd *, int *); | |
705 | ||
c906108c SS |
706 | /* Fill in the exec file target vector. Very few entries need to be |
707 | defined. */ | |
708 | ||
be4d1333 | 709 | static void |
fba45db2 | 710 | init_exec_ops (void) |
c906108c SS |
711 | { |
712 | exec_ops.to_shortname = "exec"; | |
713 | exec_ops.to_longname = "Local exec file"; | |
714 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
715 | Specify the filename of the executable file."; | |
1adeb98a | 716 | exec_ops.to_open = exec_open; |
c906108c SS |
717 | exec_ops.to_close = exec_close; |
718 | exec_ops.to_attach = find_default_attach; | |
c906108c SS |
719 | exec_ops.to_xfer_memory = xfer_memory; |
720 | exec_ops.to_files_info = exec_files_info; | |
721 | exec_ops.to_insert_breakpoint = ignore; | |
722 | exec_ops.to_remove_breakpoint = ignore; | |
723 | exec_ops.to_create_inferior = find_default_create_inferior; | |
c906108c SS |
724 | exec_ops.to_stratum = file_stratum; |
725 | exec_ops.to_has_memory = 1; | |
be4d1333 | 726 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 727 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
728 | } |
729 | ||
730 | void | |
fba45db2 | 731 | _initialize_exec (void) |
c906108c SS |
732 | { |
733 | struct cmd_list_element *c; | |
734 | ||
735 | init_exec_ops (); | |
736 | ||
737 | if (!dbx_commands) | |
738 | { | |
739 | c = add_cmd ("file", class_files, file_command, | |
740 | "Use FILE as program to be debugged.\n\ | |
741 | It is read for its symbols, for getting the contents of pure memory,\n\ | |
742 | and it is the program executed when you use the `run' command.\n\ | |
743 | If FILE cannot be found as specified, your execution directory path\n\ | |
744 | ($PATH) is searched for a command of that name.\n\ | |
745 | No arg means to have no executable file and no symbols.", &cmdlist); | |
5ba2abeb | 746 | set_cmd_completer (c, filename_completer); |
c906108c SS |
747 | } |
748 | ||
749 | c = add_cmd ("exec-file", class_files, exec_file_command, | |
c5aa993b | 750 | "Use FILE as program for getting contents of pure memory.\n\ |
c906108c SS |
751 | If FILE cannot be found as specified, your execution directory path\n\ |
752 | is searched for a command of that name.\n\ | |
753 | No arg means have no executable file.", &cmdlist); | |
5ba2abeb | 754 | set_cmd_completer (c, filename_completer); |
c906108c SS |
755 | |
756 | add_com ("section", class_files, set_section_command, | |
c5aa993b | 757 | "Change the base address of section SECTION of the exec file to ADDR.\n\ |
c906108c SS |
758 | This can be used if the exec file does not contain section addresses,\n\ |
759 | (such as in the a.out format), or when the addresses specified in the\n\ | |
760 | file itself are wrong. Each section must be changed separately. The\n\ | |
761 | ``info files'' command lists all the sections and their addresses."); | |
762 | ||
763 | add_show_from_set | |
c5aa993b | 764 | (add_set_cmd ("write", class_support, var_boolean, (char *) &write_files, |
c906108c SS |
765 | "Set writing into executable and core files.", |
766 | &setlist), | |
767 | &showlist); | |
c5aa993b | 768 | |
c906108c SS |
769 | add_target (&exec_ops); |
770 | } | |
be4d1333 MS |
771 | |
772 | static char * | |
773 | exec_make_note_section (bfd *obfd, int *note_size) | |
774 | { | |
c564377f | 775 | error ("Can't create a corefile"); |
be4d1333 | 776 | } |