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c906108c SS |
1 | /* Work with executable files, for GDB. |
2 | Copyright 1988, 1989, 1991, 1992, 1993, 1994, 1997, 1998 | |
3 | Free Software Foundation, Inc. | |
4 | ||
5 | This file is part of GDB. | |
6 | ||
7 | This program is free software; you can redistribute it and/or modify | |
8 | it under the terms of the GNU General Public License as published by | |
9 | the Free Software Foundation; either version 2 of the License, or | |
10 | (at your option) any later version. | |
11 | ||
12 | This program is distributed in the hope that it will be useful, | |
13 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
15 | GNU General Public License for more details. | |
16 | ||
17 | You should have received a copy of the GNU General Public License | |
18 | along with this program; if not, write to the Free Software | |
19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ | |
20 | ||
21 | #include "defs.h" | |
22 | #include "frame.h" | |
23 | #include "inferior.h" | |
24 | #include "target.h" | |
25 | #include "gdbcmd.h" | |
26 | #include "language.h" | |
27 | #include "symfile.h" | |
28 | #include "objfiles.h" | |
29 | ||
30 | #ifdef USG | |
31 | #include <sys/types.h> | |
32 | #endif | |
33 | ||
34 | #include <fcntl.h> | |
35 | #include "gdb_string.h" | |
36 | ||
37 | #include "gdbcore.h" | |
38 | ||
39 | #include <ctype.h> | |
40 | #include "gdb_stat.h" | |
41 | #ifndef O_BINARY | |
42 | #define O_BINARY 0 | |
43 | #endif | |
44 | ||
45 | #include "xcoffsolib.h" | |
46 | ||
47 | struct vmap *map_vmap PARAMS ((bfd *, bfd *)); | |
48 | ||
49 | void (*file_changed_hook) PARAMS ((char *)); | |
50 | ||
51 | /* Prototypes for local functions */ | |
52 | ||
53 | static void add_to_section_table PARAMS ((bfd *, sec_ptr, PTR)); | |
54 | ||
55 | static void exec_close PARAMS ((int)); | |
56 | ||
57 | static void file_command PARAMS ((char *, int)); | |
58 | ||
59 | static void set_section_command PARAMS ((char *, int)); | |
60 | ||
61 | static void exec_files_info PARAMS ((struct target_ops *)); | |
62 | ||
63 | static void bfdsec_to_vmap PARAMS ((bfd *, sec_ptr, PTR)); | |
64 | ||
65 | static int ignore PARAMS ((CORE_ADDR, char *)); | |
66 | ||
67 | static void init_exec_ops PARAMS ((void)); | |
68 | ||
69 | void _initialize_exec PARAMS ((void)); | |
70 | ||
71 | extern int info_verbose; | |
72 | ||
73 | /* The target vector for executable files. */ | |
74 | ||
75 | struct target_ops exec_ops; | |
76 | ||
77 | /* The Binary File Descriptor handle for the executable file. */ | |
78 | ||
79 | bfd *exec_bfd = NULL; | |
80 | ||
81 | /* Whether to open exec and core files read-only or read-write. */ | |
82 | ||
83 | int write_files = 0; | |
84 | ||
85 | /* Text start and end addresses (KLUDGE) if needed */ | |
86 | ||
87 | #ifndef NEED_TEXT_START_END | |
88 | #define NEED_TEXT_START_END (0) | |
89 | #endif | |
90 | CORE_ADDR text_start = 0; | |
91 | CORE_ADDR text_end = 0; | |
92 | ||
93 | struct vmap *vmap; | |
94 | ||
95 | /* ARGSUSED */ | |
96 | static void | |
97 | exec_close (quitting) | |
98 | int quitting; | |
99 | { | |
100 | int need_symtab_cleanup = 0; | |
101 | struct vmap *vp, *nxt; | |
102 | ||
103 | for (nxt = vmap; nxt != NULL; ) | |
104 | { | |
105 | vp = nxt; | |
106 | nxt = vp->nxt; | |
107 | ||
108 | /* if there is an objfile associated with this bfd, | |
109 | free_objfile() will do proper cleanup of objfile *and* bfd. */ | |
110 | ||
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 | |
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. */ | |
127 | free_named_symtabs (vp->name); | |
128 | free (vp); | |
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 ())); | |
140 | free (name); | |
141 | exec_bfd = NULL; | |
142 | } | |
143 | ||
144 | if (exec_ops.to_sections) | |
145 | { | |
146 | free ((PTR)exec_ops.to_sections); | |
147 | exec_ops.to_sections = NULL; | |
148 | exec_ops.to_sections_end = NULL; | |
149 | } | |
150 | } | |
151 | ||
152 | /* Process the first arg in ARGS as the new exec file. | |
153 | ||
154 | This function is intended to be behave essentially the same | |
155 | as exec_file_command, except that the latter will detect when | |
156 | a target is being debugged, and will ask the user whether it | |
157 | should be shut down first. (If the answer is "no", then the | |
158 | new file is ignored.) | |
159 | ||
160 | This file is used by exec_file_command, to do the work of opening | |
161 | and processing the exec file after any prompting has happened. | |
162 | ||
163 | And, it is used by child_attach, when the attach command was | |
164 | given a pid but not a exec pathname, and the attach command could | |
165 | figure out the pathname from the pid. (In this case, we shouldn't | |
166 | ask the user whether the current target should be shut down -- | |
167 | we're supplying the exec pathname late for good reason.) */ | |
168 | ||
169 | void | |
170 | exec_file_attach (args, from_tty) | |
171 | char *args; | |
172 | int from_tty; | |
173 | { | |
174 | char **argv; | |
175 | char *filename; | |
176 | ||
177 | /* Remove any previous exec file. */ | |
178 | unpush_target (&exec_ops); | |
179 | ||
180 | /* Now open and digest the file the user requested, if any. */ | |
181 | ||
182 | if (args) | |
183 | { | |
184 | char *scratch_pathname; | |
185 | int scratch_chan; | |
186 | ||
187 | /* Scan through the args and pick up the first non option arg | |
188 | as the filename. */ | |
189 | ||
190 | argv = buildargv (args); | |
191 | if (argv == NULL) | |
192 | nomem (0); | |
193 | ||
7a292a7a | 194 | make_cleanup_freeargv (argv); |
c906108c SS |
195 | |
196 | for (; (*argv != NULL) && (**argv == '-'); argv++) {;} | |
197 | if (*argv == NULL) | |
198 | error ("no exec file name was specified"); | |
199 | ||
200 | filename = tilde_expand (*argv); | |
201 | make_cleanup (free, filename); | |
202 | ||
203 | scratch_chan = openp (getenv ("PATH"), 1, filename, | |
204 | write_files? O_RDWR|O_BINARY: O_RDONLY|O_BINARY, 0, | |
205 | &scratch_pathname); | |
206 | #if defined(__GO32__) || defined(_WIN32) | |
207 | if (scratch_chan < 0) | |
208 | { | |
209 | char *exename = alloca (strlen (filename) + 5); | |
210 | strcat (strcpy (exename, filename), ".exe"); | |
211 | scratch_chan = openp (getenv ("PATH"), 1, exename, write_files ? | |
212 | O_RDWR|O_BINARY : O_RDONLY|O_BINARY, 0, &scratch_pathname); | |
213 | } | |
214 | #endif | |
215 | if (scratch_chan < 0) | |
216 | perror_with_name (filename); | |
217 | exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); | |
218 | ||
219 | if (!exec_bfd) | |
220 | error ("\"%s\": could not open as an executable file: %s", | |
221 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
222 | ||
223 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
224 | same malloc'd string. However exec_close() will attempt to free it | |
225 | via the exec_bfd->name pointer, so we need to make another copy and | |
226 | leave exec_bfd as the new owner of the original copy. */ | |
227 | scratch_pathname = strdup (scratch_pathname); | |
228 | make_cleanup (free, scratch_pathname); | |
229 | ||
230 | if (!bfd_check_format (exec_bfd, bfd_object)) | |
231 | { | |
232 | /* Make sure to close exec_bfd, or else "run" might try to use | |
233 | it. */ | |
234 | exec_close (0); | |
235 | error ("\"%s\": not in executable format: %s", | |
236 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
237 | } | |
238 | ||
239 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
240 | way to accomplish. */ | |
241 | #ifdef IBM6000_TARGET | |
242 | /* Setup initial vmap. */ | |
243 | ||
244 | map_vmap (exec_bfd, 0); | |
245 | if (vmap == NULL) | |
246 | { | |
247 | /* Make sure to close exec_bfd, or else "run" might try to use | |
248 | it. */ | |
249 | exec_close (0); | |
250 | error ("\"%s\": can't find the file sections: %s", | |
251 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
252 | } | |
253 | #endif /* IBM6000_TARGET */ | |
254 | ||
255 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
256 | &exec_ops.to_sections_end)) | |
257 | { | |
258 | /* Make sure to close exec_bfd, or else "run" might try to use | |
259 | it. */ | |
260 | exec_close (0); | |
261 | error ("\"%s\": can't find the file sections: %s", | |
262 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
263 | } | |
264 | ||
265 | /* text_end is sometimes used for where to put call dummies. A | |
266 | few ports use these for other purposes too. */ | |
267 | if (NEED_TEXT_START_END) | |
268 | { | |
269 | struct section_table *p; | |
270 | ||
271 | /* Set text_start to the lowest address of the start of any | |
272 | readonly code section and set text_end to the highest | |
273 | address of the end of any readonly code section. */ | |
274 | /* FIXME: The comment above does not match the code. The | |
275 | code checks for sections with are either code *or* | |
276 | readonly. */ | |
277 | text_start = ~(CORE_ADDR)0; | |
278 | text_end = (CORE_ADDR)0; | |
279 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) | |
280 | if (bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
281 | & (SEC_CODE | SEC_READONLY)) | |
282 | { | |
283 | if (text_start > p->addr) | |
284 | text_start = p->addr; | |
285 | if (text_end < p->endaddr) | |
286 | text_end = p->endaddr; | |
287 | } | |
288 | } | |
289 | ||
290 | validate_files (); | |
291 | ||
292 | set_gdbarch_from_file (exec_bfd); | |
293 | ||
294 | push_target (&exec_ops); | |
295 | ||
296 | /* Tell display code (if any) about the changed file name. */ | |
297 | if (exec_file_display_hook) | |
298 | (*exec_file_display_hook) (filename); | |
299 | } | |
300 | else if (from_tty) | |
301 | printf_unfiltered ("No executable file now.\n"); | |
302 | } | |
303 | ||
304 | /* Process the first arg in ARGS as the new exec file. | |
305 | ||
306 | Note that we have to explicitly ignore additional args, since we can | |
307 | be called from file_command(), which also calls symbol_file_command() | |
308 | which can take multiple args. */ | |
309 | ||
310 | void | |
311 | exec_file_command (args, from_tty) | |
312 | char *args; | |
313 | int from_tty; | |
314 | { | |
315 | char **argv; | |
316 | char *filename; | |
317 | ||
318 | target_preopen (from_tty); | |
319 | ||
320 | exec_file_attach (args, from_tty); | |
321 | } | |
322 | ||
323 | /* Set both the exec file and the symbol file, in one command. | |
324 | What a novelty. Why did GDB go through four major releases before this | |
325 | command was added? */ | |
326 | ||
327 | static void | |
328 | file_command (arg, from_tty) | |
329 | char *arg; | |
330 | int from_tty; | |
331 | { | |
332 | /* FIXME, if we lose on reading the symbol file, we should revert | |
333 | the exec file, but that's rough. */ | |
334 | exec_file_command (arg, from_tty); | |
335 | symbol_file_command (arg, from_tty); | |
336 | if (file_changed_hook) | |
337 | file_changed_hook (arg); | |
338 | } | |
339 | ||
340 | \f | |
341 | /* Locate all mappable sections of a BFD file. | |
342 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
343 | we cast it back to its proper type. */ | |
344 | ||
345 | static void | |
346 | add_to_section_table (abfd, asect, table_pp_char) | |
347 | bfd *abfd; | |
348 | sec_ptr asect; | |
349 | PTR table_pp_char; | |
350 | { | |
351 | struct section_table **table_pp = (struct section_table **)table_pp_char; | |
352 | flagword aflag; | |
353 | ||
354 | aflag = bfd_get_section_flags (abfd, asect); | |
355 | if (!(aflag & SEC_ALLOC)) | |
356 | return; | |
357 | if (0 == bfd_section_size (abfd, asect)) | |
358 | return; | |
359 | (*table_pp)->bfd = abfd; | |
360 | (*table_pp)->the_bfd_section = asect; | |
361 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
362 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
363 | (*table_pp)++; | |
364 | } | |
365 | ||
366 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
367 | Returns 0 if OK, 1 on error. */ | |
368 | ||
369 | int | |
370 | build_section_table (some_bfd, start, end) | |
371 | bfd *some_bfd; | |
372 | struct section_table **start, **end; | |
373 | { | |
374 | unsigned count; | |
375 | ||
376 | count = bfd_count_sections (some_bfd); | |
377 | if (*start) | |
378 | free ((PTR)*start); | |
379 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); | |
380 | *end = *start; | |
381 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end); | |
382 | if (*end > *start + count) | |
383 | abort(); | |
384 | /* We could realloc the table, but it probably loses for most files. */ | |
385 | return 0; | |
386 | } | |
387 | \f | |
388 | static void | |
389 | bfdsec_to_vmap(abfd, sect, arg3) | |
390 | bfd *abfd; | |
391 | sec_ptr sect; | |
392 | PTR arg3; | |
393 | { | |
394 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
395 | struct vmap *vp; | |
396 | ||
397 | vp = vmap_bfd->pvmap; | |
398 | ||
399 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
400 | return; | |
401 | ||
402 | if (STREQ (bfd_section_name (abfd, sect), ".text")) | |
403 | { | |
404 | vp->tstart = bfd_section_vma (abfd, sect); | |
405 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
406 | vp->tvma = bfd_section_vma (abfd, sect); | |
407 | vp->toffs = sect->filepos; | |
408 | } | |
409 | else if (STREQ (bfd_section_name (abfd, sect), ".data")) | |
410 | { | |
411 | vp->dstart = bfd_section_vma (abfd, sect); | |
412 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
413 | vp->dvma = bfd_section_vma (abfd, sect); | |
414 | } | |
415 | /* Silently ignore other types of sections. (FIXME?) */ | |
416 | } | |
417 | ||
418 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
419 | Return the new vmap. */ | |
420 | ||
421 | struct vmap * | |
422 | map_vmap (abfd, arch) | |
423 | bfd *abfd; | |
424 | bfd *arch; | |
425 | { | |
426 | struct vmap_and_bfd vmap_bfd; | |
427 | struct vmap *vp, **vpp; | |
428 | ||
429 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
430 | memset ((char *) vp, '\0', sizeof (*vp)); | |
431 | vp->nxt = 0; | |
432 | vp->bfd = abfd; | |
433 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
434 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
435 | ||
436 | vmap_bfd.pbfd = arch; | |
437 | vmap_bfd.pvmap = vp; | |
438 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
439 | ||
440 | /* Find the end of the list and append. */ | |
441 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
442 | ; | |
443 | *vpp = vp; | |
444 | ||
445 | return vp; | |
446 | } | |
447 | \f | |
448 | /* Read or write the exec file. | |
449 | ||
450 | Args are address within a BFD file, address within gdb address-space, | |
451 | length, and a flag indicating whether to read or write. | |
452 | ||
453 | Result is a length: | |
454 | ||
455 | 0: We cannot handle this address and length. | |
456 | > 0: We have handled N bytes starting at this address. | |
457 | (If N == length, we did it all.) We might be able | |
458 | to handle more bytes beyond this length, but no | |
459 | promises. | |
460 | < 0: We cannot handle this address, but if somebody | |
461 | else handles (-N) bytes, we can start from there. | |
462 | ||
463 | The same routine is used to handle both core and exec files; | |
464 | we just tail-call it with more arguments to select between them. */ | |
465 | ||
466 | int | |
467 | xfer_memory (memaddr, myaddr, len, write, target) | |
468 | CORE_ADDR memaddr; | |
469 | char *myaddr; | |
470 | int len; | |
471 | int write; | |
472 | struct target_ops *target; | |
473 | { | |
474 | boolean res; | |
475 | struct section_table *p; | |
476 | CORE_ADDR nextsectaddr, memend; | |
477 | boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); | |
478 | asection *section; | |
479 | ||
480 | if (len <= 0) | |
481 | abort(); | |
482 | ||
483 | if (overlay_debugging) | |
484 | { | |
485 | section = find_pc_overlay (memaddr); | |
486 | if (pc_in_unmapped_range (memaddr, section)) | |
487 | memaddr = overlay_mapped_address (memaddr, section); | |
488 | } | |
489 | ||
490 | memend = memaddr + len; | |
491 | xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents; | |
492 | nextsectaddr = memend; | |
493 | ||
494 | #if 0 /* Stu's implementation */ | |
495 | /* If a section has been specified, try to use it. Note that we cannot use the | |
496 | specified section directly. This is because it usually comes from the | |
497 | symbol file, which may be different from the exec or core file. Instead, we | |
498 | have to lookup the specified section by name in the bfd associated with | |
499 | to_sections. */ | |
500 | ||
501 | if (target_memory_bfd_section) | |
502 | { | |
503 | asection *s; | |
504 | bfd *abfd; | |
505 | asection *target_section; | |
506 | bfd *target_bfd; | |
507 | ||
508 | s = target_memory_bfd_section; | |
509 | abfd = s->owner; | |
510 | ||
511 | target_bfd = target->to_sections->bfd; | |
512 | target_section = bfd_get_section_by_name (target_bfd, bfd_section_name (abfd, s)); | |
513 | ||
514 | if (target_section) | |
515 | { | |
516 | bfd_vma sec_addr; | |
517 | bfd_size_type sec_size; | |
518 | ||
519 | sec_addr = bfd_section_vma (target_bfd, target_section); | |
520 | sec_size = target_section->_raw_size; | |
521 | ||
522 | /* Make sure the requested memory starts inside the section. */ | |
523 | ||
524 | if (memaddr >= sec_addr | |
525 | && memaddr < sec_addr + sec_size) | |
526 | { | |
527 | /* Cut back length in case request overflows the end of the section. */ | |
528 | len = min (len, sec_addr + sec_size - memaddr); | |
529 | ||
530 | res = xfer_fn (target_bfd, target_section, myaddr, memaddr - sec_addr, len); | |
531 | ||
532 | return res ? len : 0; | |
533 | } | |
534 | } | |
535 | } | |
536 | #endif /* 0, Stu's implementation */ | |
537 | for (p = target->to_sections; p < target->to_sections_end; p++) | |
538 | { | |
539 | if (overlay_debugging && section && p->the_bfd_section && | |
540 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
541 | continue; /* not the section we need */ | |
542 | if (memaddr >= p->addr) | |
543 | if (memend <= p->endaddr) | |
544 | { | |
545 | /* Entire transfer is within this section. */ | |
546 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
547 | memaddr - p->addr, len); | |
548 | return (res != 0) ? len : 0; | |
549 | } | |
550 | else if (memaddr >= p->endaddr) | |
551 | { | |
552 | /* This section ends before the transfer starts. */ | |
553 | continue; | |
554 | } | |
555 | else | |
556 | { | |
557 | /* This section overlaps the transfer. Just do half. */ | |
558 | len = p->endaddr - memaddr; | |
559 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
560 | memaddr - p->addr, len); | |
561 | return (res != 0) ? len : 0; | |
562 | } | |
563 | else | |
564 | nextsectaddr = min (nextsectaddr, p->addr); | |
565 | } | |
566 | ||
567 | if (nextsectaddr >= memend) | |
568 | return 0; /* We can't help */ | |
569 | else | |
570 | return - (nextsectaddr - memaddr); /* Next boundary where we can help */ | |
571 | } | |
572 | ||
c906108c SS |
573 | \f |
574 | void | |
575 | print_section_info (t, abfd) | |
576 | struct target_ops *t; | |
577 | bfd *abfd; | |
578 | { | |
579 | struct section_table *p; | |
580 | ||
581 | printf_filtered ("\t`%s', ", bfd_get_filename(abfd)); | |
582 | wrap_here (" "); | |
583 | printf_filtered ("file type %s.\n", bfd_get_target(abfd)); | |
584 | if (abfd == exec_bfd) | |
585 | { | |
586 | printf_filtered ("\tEntry point: "); | |
587 | print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); | |
588 | printf_filtered ("\n"); | |
589 | } | |
590 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
591 | { | |
592 | /* FIXME-32x64 need a print_address_numeric with field width */ | |
593 | printf_filtered ("\t%s", local_hex_string_custom ((unsigned long) p->addr, "08l")); | |
594 | printf_filtered (" - %s", local_hex_string_custom ((unsigned long) p->endaddr, "08l")); | |
595 | if (info_verbose) | |
596 | printf_filtered (" @ %s", | |
597 | local_hex_string_custom ((unsigned long) p->the_bfd_section->filepos, "08l")); | |
598 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); | |
599 | if (p->bfd != abfd) | |
600 | { | |
601 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); | |
602 | } | |
603 | printf_filtered ("\n"); | |
604 | } | |
605 | } | |
606 | ||
607 | static void | |
608 | exec_files_info (t) | |
609 | struct target_ops *t; | |
610 | { | |
611 | print_section_info (t, exec_bfd); | |
612 | ||
613 | if (vmap) | |
614 | { | |
615 | struct vmap *vp; | |
616 | ||
617 | printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name); | |
618 | printf_unfiltered ("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n", | |
619 | "tstart", "tend", "dstart", "dend", "section", | |
620 | "file(member)"); | |
621 | ||
622 | for (vp = vmap; vp; vp = vp->nxt) | |
623 | printf_unfiltered ("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n", | |
624 | vp->tstart, vp->tend, vp->dstart, vp->dend, vp->name, | |
625 | *vp->member ? "(" : "", vp->member, | |
626 | *vp->member ? ")" : ""); | |
627 | } | |
628 | } | |
629 | ||
0f71a2f6 JM |
630 | /* msnyder 5/21/99: |
631 | exec_set_section_offsets sets the offsets of all the sections | |
632 | in the exec objfile. */ | |
633 | ||
634 | void | |
635 | exec_set_section_offsets (text_off, data_off, bss_off) | |
636 | bfd_signed_vma text_off; | |
637 | bfd_signed_vma data_off; | |
638 | bfd_signed_vma bss_off; | |
639 | { | |
640 | struct section_table *sect; | |
641 | ||
642 | for (sect = exec_ops.to_sections; | |
643 | sect < exec_ops.to_sections_end; | |
644 | sect++) | |
645 | { | |
646 | flagword flags; | |
647 | ||
648 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
649 | ||
650 | if (flags & SEC_CODE) | |
651 | { | |
652 | sect->addr += text_off; | |
653 | sect->endaddr += text_off; | |
654 | } | |
655 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
656 | { | |
657 | sect->addr += data_off; | |
658 | sect->endaddr += data_off; | |
659 | } | |
660 | else if (flags & SEC_ALLOC) | |
661 | { | |
662 | sect->addr += bss_off; | |
663 | sect->endaddr += bss_off; | |
664 | } | |
665 | } | |
666 | } | |
667 | ||
c906108c SS |
668 | static void |
669 | set_section_command (args, from_tty) | |
670 | char *args; | |
671 | int from_tty; | |
672 | { | |
673 | struct section_table *p; | |
674 | char *secname; | |
675 | unsigned seclen; | |
676 | unsigned long secaddr; | |
677 | char secprint[100]; | |
678 | long offset; | |
679 | ||
680 | if (args == 0) | |
681 | error ("Must specify section name and its virtual address"); | |
682 | ||
683 | /* Parse out section name */ | |
684 | for (secname = args; !isspace(*args); args++) ; | |
685 | seclen = args - secname; | |
686 | ||
687 | /* Parse out new virtual address */ | |
688 | secaddr = parse_and_eval_address (args); | |
689 | ||
690 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) { | |
691 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
692 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') { | |
693 | offset = secaddr - p->addr; | |
694 | p->addr += offset; | |
695 | p->endaddr += offset; | |
696 | if (from_tty) | |
697 | exec_files_info(&exec_ops); | |
698 | return; | |
699 | } | |
700 | } | |
701 | if (seclen >= sizeof (secprint)) | |
702 | seclen = sizeof (secprint) - 1; | |
703 | strncpy (secprint, secname, seclen); | |
704 | secprint[seclen] = '\0'; | |
705 | error ("Section %s not found", secprint); | |
706 | } | |
707 | ||
708 | /* If mourn is being called in all the right places, this could be say | |
709 | `gdb internal error' (since generic_mourn calls | |
710 | breakpoint_init_inferior). */ | |
711 | ||
712 | static int | |
713 | ignore (addr, contents) | |
714 | CORE_ADDR addr; | |
715 | char *contents; | |
716 | { | |
717 | return 0; | |
718 | } | |
719 | ||
720 | /* Fill in the exec file target vector. Very few entries need to be | |
721 | defined. */ | |
722 | ||
723 | void | |
724 | init_exec_ops () | |
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."; | |
730 | exec_ops.to_open = exec_file_command; | |
731 | exec_ops.to_close = exec_close; | |
732 | exec_ops.to_attach = find_default_attach; | |
733 | exec_ops.to_require_attach = find_default_require_attach; | |
734 | exec_ops.to_require_detach = find_default_require_detach; | |
735 | exec_ops.to_xfer_memory = xfer_memory; | |
736 | exec_ops.to_files_info = exec_files_info; | |
737 | exec_ops.to_insert_breakpoint = ignore; | |
738 | exec_ops.to_remove_breakpoint = ignore; | |
739 | exec_ops.to_create_inferior = find_default_create_inferior; | |
740 | exec_ops.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior; | |
741 | exec_ops.to_stratum = file_stratum; | |
742 | exec_ops.to_has_memory = 1; | |
743 | exec_ops.to_magic = OPS_MAGIC; | |
744 | } | |
745 | ||
746 | void | |
747 | _initialize_exec () | |
748 | { | |
749 | struct cmd_list_element *c; | |
750 | ||
751 | init_exec_ops (); | |
752 | ||
753 | if (!dbx_commands) | |
754 | { | |
755 | c = add_cmd ("file", class_files, file_command, | |
756 | "Use FILE as program to be debugged.\n\ | |
757 | It is read for its symbols, for getting the contents of pure memory,\n\ | |
758 | and it is the program executed when you use the `run' command.\n\ | |
759 | If FILE cannot be found as specified, your execution directory path\n\ | |
760 | ($PATH) is searched for a command of that name.\n\ | |
761 | No arg means to have no executable file and no symbols.", &cmdlist); | |
762 | c->completer = filename_completer; | |
763 | } | |
764 | ||
765 | c = add_cmd ("exec-file", class_files, exec_file_command, | |
766 | "Use FILE as program for getting contents of pure memory.\n\ | |
767 | If FILE cannot be found as specified, your execution directory path\n\ | |
768 | is searched for a command of that name.\n\ | |
769 | No arg means have no executable file.", &cmdlist); | |
770 | c->completer = filename_completer; | |
771 | ||
772 | add_com ("section", class_files, set_section_command, | |
773 | "Change the base address of section SECTION of the exec file to ADDR.\n\ | |
774 | This can be used if the exec file does not contain section addresses,\n\ | |
775 | (such as in the a.out format), or when the addresses specified in the\n\ | |
776 | file itself are wrong. Each section must be changed separately. The\n\ | |
777 | ``info files'' command lists all the sections and their addresses."); | |
778 | ||
779 | add_show_from_set | |
780 | (add_set_cmd ("write", class_support, var_boolean, (char *)&write_files, | |
781 | "Set writing into executable and core files.", | |
782 | &setlist), | |
783 | &showlist); | |
784 | ||
785 | add_target (&exec_ops); | |
786 | } |