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> | |
39 | #include "gdb_string.h" | |
40 | ||
41 | #include "gdbcore.h" | |
42 | ||
43 | #include <ctype.h> | |
44 | #include "gdb_stat.h" | |
45 | #ifndef O_BINARY | |
46 | #define O_BINARY 0 | |
47 | #endif | |
48 | ||
49 | #include "xcoffsolib.h" | |
50 | ||
a14ed312 | 51 | struct vmap *map_vmap (bfd *, bfd *); |
c906108c | 52 | |
507f3c78 | 53 | void (*file_changed_hook) (char *); |
c906108c SS |
54 | |
55 | /* Prototypes for local functions */ | |
56 | ||
a14ed312 | 57 | static void add_to_section_table (bfd *, sec_ptr, PTR); |
c906108c | 58 | |
a14ed312 | 59 | static void exec_close (int); |
c906108c | 60 | |
a14ed312 | 61 | static void file_command (char *, int); |
c906108c | 62 | |
a14ed312 | 63 | static void set_section_command (char *, int); |
c906108c | 64 | |
a14ed312 | 65 | static void exec_files_info (struct target_ops *); |
c906108c | 66 | |
a14ed312 | 67 | static void bfdsec_to_vmap (bfd *, sec_ptr, PTR); |
c906108c | 68 | |
a14ed312 | 69 | static int ignore (CORE_ADDR, char *); |
c906108c | 70 | |
a14ed312 | 71 | static void init_exec_ops (void); |
c906108c | 72 | |
a14ed312 | 73 | void _initialize_exec (void); |
c906108c | 74 | |
c906108c SS |
75 | /* The target vector for executable files. */ |
76 | ||
77 | struct target_ops exec_ops; | |
78 | ||
79 | /* The Binary File Descriptor handle for the executable file. */ | |
80 | ||
81 | bfd *exec_bfd = NULL; | |
82 | ||
83 | /* Whether to open exec and core files read-only or read-write. */ | |
84 | ||
85 | int write_files = 0; | |
86 | ||
87 | /* Text start and end addresses (KLUDGE) if needed */ | |
88 | ||
89 | #ifndef NEED_TEXT_START_END | |
90 | #define NEED_TEXT_START_END (0) | |
91 | #endif | |
92 | CORE_ADDR text_start = 0; | |
c5aa993b | 93 | CORE_ADDR text_end = 0; |
c906108c SS |
94 | |
95 | struct vmap *vmap; | |
96 | ||
1adeb98a FN |
97 | void |
98 | exec_open (char *args, int from_tty) | |
99 | { | |
100 | target_preopen (from_tty); | |
101 | exec_file_attach (args, from_tty); | |
102 | } | |
103 | ||
c906108c SS |
104 | /* ARGSUSED */ |
105 | static void | |
fba45db2 | 106 | exec_close (int quitting) |
c906108c SS |
107 | { |
108 | int need_symtab_cleanup = 0; | |
109 | struct vmap *vp, *nxt; | |
c5aa993b JM |
110 | |
111 | for (nxt = vmap; nxt != NULL;) | |
c906108c SS |
112 | { |
113 | vp = nxt; | |
114 | nxt = vp->nxt; | |
115 | ||
116 | /* if there is an objfile associated with this bfd, | |
c5aa993b JM |
117 | free_objfile() will do proper cleanup of objfile *and* bfd. */ |
118 | ||
c906108c SS |
119 | if (vp->objfile) |
120 | { | |
121 | free_objfile (vp->objfile); | |
122 | need_symtab_cleanup = 1; | |
123 | } | |
124 | else if (vp->bfd != exec_bfd) | |
125 | /* FIXME-leak: We should be freeing vp->name too, I think. */ | |
126 | if (!bfd_close (vp->bfd)) | |
127 | warning ("cannot close \"%s\": %s", | |
128 | vp->name, bfd_errmsg (bfd_get_error ())); | |
129 | ||
130 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
c5aa993b JM |
131 | be doing here? Should we just free everything in |
132 | vp->objfile->symtabs? Should free_objfile do that? | |
133 | FIXME-as-well: free_objfile already free'd vp->name, so it isn't | |
134 | valid here. */ | |
c906108c | 135 | free_named_symtabs (vp->name); |
b8c9b27d | 136 | xfree (vp); |
c906108c SS |
137 | } |
138 | ||
139 | vmap = NULL; | |
140 | ||
141 | if (exec_bfd) | |
142 | { | |
143 | char *name = bfd_get_filename (exec_bfd); | |
144 | ||
145 | if (!bfd_close (exec_bfd)) | |
146 | warning ("cannot close \"%s\": %s", | |
147 | name, bfd_errmsg (bfd_get_error ())); | |
b8c9b27d | 148 | xfree (name); |
c906108c SS |
149 | exec_bfd = NULL; |
150 | } | |
151 | ||
152 | if (exec_ops.to_sections) | |
153 | { | |
b8c9b27d | 154 | xfree (exec_ops.to_sections); |
c906108c SS |
155 | exec_ops.to_sections = NULL; |
156 | exec_ops.to_sections_end = NULL; | |
157 | } | |
158 | } | |
159 | ||
1adeb98a FN |
160 | void |
161 | exec_file_clear (int from_tty) | |
162 | { | |
163 | /* Remove exec file. */ | |
164 | unpush_target (&exec_ops); | |
165 | ||
166 | if (from_tty) | |
167 | printf_unfiltered ("No executable file now.\n"); | |
168 | } | |
169 | ||
c906108c SS |
170 | /* Process the first arg in ARGS as the new exec file. |
171 | ||
c5aa993b JM |
172 | This function is intended to be behave essentially the same |
173 | as exec_file_command, except that the latter will detect when | |
174 | a target is being debugged, and will ask the user whether it | |
175 | should be shut down first. (If the answer is "no", then the | |
176 | new file is ignored.) | |
c906108c | 177 | |
c5aa993b JM |
178 | This file is used by exec_file_command, to do the work of opening |
179 | and processing the exec file after any prompting has happened. | |
c906108c | 180 | |
c5aa993b JM |
181 | And, it is used by child_attach, when the attach command was |
182 | given a pid but not a exec pathname, and the attach command could | |
183 | figure out the pathname from the pid. (In this case, we shouldn't | |
184 | ask the user whether the current target should be shut down -- | |
1adeb98a FN |
185 | we're supplying the exec pathname late for good reason.) |
186 | ||
187 | ARGS is assumed to be the filename. */ | |
c906108c SS |
188 | |
189 | void | |
1adeb98a | 190 | exec_file_attach (char *filename, int from_tty) |
c906108c | 191 | { |
c906108c SS |
192 | /* Remove any previous exec file. */ |
193 | unpush_target (&exec_ops); | |
194 | ||
195 | /* Now open and digest the file the user requested, if any. */ | |
196 | ||
1adeb98a FN |
197 | if (!filename) |
198 | { | |
199 | if (from_tty) | |
200 | printf_unfiltered ("No executable file now.\n"); | |
201 | } | |
202 | else | |
c906108c SS |
203 | { |
204 | char *scratch_pathname; | |
205 | int scratch_chan; | |
c5aa993b | 206 | |
c5aa993b JM |
207 | scratch_chan = openp (getenv ("PATH"), 1, filename, |
208 | write_files ? O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, | |
c906108c | 209 | &scratch_pathname); |
cfc3008e | 210 | #if defined(__GO32__) || defined(_WIN32) || defined(__CYGWIN__) |
c906108c | 211 | if (scratch_chan < 0) |
c5aa993b JM |
212 | { |
213 | char *exename = alloca (strlen (filename) + 5); | |
214 | strcat (strcpy (exename, filename), ".exe"); | |
215 | scratch_chan = openp (getenv ("PATH"), 1, exename, write_files ? | |
216 | O_RDWR | O_BINARY : O_RDONLY | O_BINARY, 0, &scratch_pathname); | |
217 | } | |
c906108c SS |
218 | #endif |
219 | if (scratch_chan < 0) | |
220 | perror_with_name (filename); | |
221 | exec_bfd = bfd_fdopenr (scratch_pathname, gnutarget, scratch_chan); | |
222 | ||
223 | if (!exec_bfd) | |
224 | error ("\"%s\": could not open as an executable file: %s", | |
225 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
226 | ||
227 | /* At this point, scratch_pathname and exec_bfd->name both point to the | |
c5aa993b JM |
228 | same malloc'd string. However exec_close() will attempt to free it |
229 | via the exec_bfd->name pointer, so we need to make another copy and | |
230 | leave exec_bfd as the new owner of the original copy. */ | |
c2d11a7d | 231 | scratch_pathname = xstrdup (scratch_pathname); |
b8c9b27d | 232 | make_cleanup (xfree, scratch_pathname); |
c5aa993b | 233 | |
c906108c SS |
234 | if (!bfd_check_format (exec_bfd, bfd_object)) |
235 | { | |
236 | /* Make sure to close exec_bfd, or else "run" might try to use | |
237 | it. */ | |
238 | exec_close (0); | |
239 | error ("\"%s\": not in executable format: %s", | |
240 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
241 | } | |
242 | ||
243 | /* FIXME - This should only be run for RS6000, but the ifdef is a poor | |
c5aa993b | 244 | way to accomplish. */ |
c906108c SS |
245 | #ifdef IBM6000_TARGET |
246 | /* Setup initial vmap. */ | |
247 | ||
248 | map_vmap (exec_bfd, 0); | |
249 | if (vmap == NULL) | |
250 | { | |
251 | /* Make sure to close exec_bfd, or else "run" might try to use | |
252 | it. */ | |
253 | exec_close (0); | |
254 | error ("\"%s\": can't find the file sections: %s", | |
255 | scratch_pathname, bfd_errmsg (bfd_get_error ())); | |
256 | } | |
257 | #endif /* IBM6000_TARGET */ | |
258 | ||
259 | if (build_section_table (exec_bfd, &exec_ops.to_sections, | |
c5aa993b | 260 | &exec_ops.to_sections_end)) |
c906108c SS |
261 | { |
262 | /* Make sure to close exec_bfd, or else "run" might try to use | |
263 | it. */ | |
264 | exec_close (0); | |
c5aa993b | 265 | error ("\"%s\": can't find the file sections: %s", |
c906108c SS |
266 | scratch_pathname, bfd_errmsg (bfd_get_error ())); |
267 | } | |
268 | ||
269 | /* text_end is sometimes used for where to put call dummies. A | |
c5aa993b | 270 | few ports use these for other purposes too. */ |
c906108c SS |
271 | if (NEED_TEXT_START_END) |
272 | { | |
273 | struct section_table *p; | |
c5aa993b | 274 | |
c906108c SS |
275 | /* Set text_start to the lowest address of the start of any |
276 | readonly code section and set text_end to the highest | |
277 | address of the end of any readonly code section. */ | |
278 | /* FIXME: The comment above does not match the code. The | |
279 | code checks for sections with are either code *or* | |
280 | readonly. */ | |
c5aa993b JM |
281 | text_start = ~(CORE_ADDR) 0; |
282 | text_end = (CORE_ADDR) 0; | |
c906108c SS |
283 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
284 | if (bfd_get_section_flags (p->bfd, p->the_bfd_section) | |
285 | & (SEC_CODE | SEC_READONLY)) | |
286 | { | |
c5aa993b | 287 | if (text_start > p->addr) |
c906108c SS |
288 | text_start = p->addr; |
289 | if (text_end < p->endaddr) | |
290 | text_end = p->endaddr; | |
291 | } | |
292 | } | |
293 | ||
294 | validate_files (); | |
295 | ||
296 | set_gdbarch_from_file (exec_bfd); | |
297 | ||
298 | push_target (&exec_ops); | |
299 | ||
300 | /* Tell display code (if any) about the changed file name. */ | |
301 | if (exec_file_display_hook) | |
302 | (*exec_file_display_hook) (filename); | |
303 | } | |
c906108c SS |
304 | } |
305 | ||
306 | /* Process the first arg in ARGS as the new exec file. | |
307 | ||
c5aa993b JM |
308 | Note that we have to explicitly ignore additional args, since we can |
309 | be called from file_command(), which also calls symbol_file_command() | |
1adeb98a FN |
310 | which can take multiple args. |
311 | ||
312 | If ARGS is NULL, we just want to close the exec file. */ | |
c906108c | 313 | |
1adeb98a | 314 | static void |
fba45db2 | 315 | exec_file_command (char *args, int from_tty) |
c906108c | 316 | { |
1adeb98a FN |
317 | char **argv; |
318 | char *filename; | |
319 | ||
c906108c | 320 | target_preopen (from_tty); |
1adeb98a FN |
321 | |
322 | if (args) | |
323 | { | |
324 | /* Scan through the args and pick up the first non option arg | |
325 | as the filename. */ | |
326 | ||
327 | argv = buildargv (args); | |
328 | if (argv == NULL) | |
329 | nomem (0); | |
330 | ||
331 | make_cleanup_freeargv (argv); | |
332 | ||
333 | for (; (*argv != NULL) && (**argv == '-'); argv++) | |
334 | {; | |
335 | } | |
336 | if (*argv == NULL) | |
337 | error ("No executable file name was specified"); | |
338 | ||
339 | filename = tilde_expand (*argv); | |
340 | make_cleanup (xfree, filename); | |
341 | exec_file_attach (filename, from_tty); | |
342 | } | |
343 | else | |
344 | exec_file_attach (NULL, from_tty); | |
c906108c SS |
345 | } |
346 | ||
347 | /* Set both the exec file and the symbol file, in one command. | |
348 | What a novelty. Why did GDB go through four major releases before this | |
349 | command was added? */ | |
350 | ||
351 | static void | |
fba45db2 | 352 | file_command (char *arg, int from_tty) |
c906108c SS |
353 | { |
354 | /* FIXME, if we lose on reading the symbol file, we should revert | |
355 | the exec file, but that's rough. */ | |
356 | exec_file_command (arg, from_tty); | |
357 | symbol_file_command (arg, from_tty); | |
358 | if (file_changed_hook) | |
359 | file_changed_hook (arg); | |
360 | } | |
c906108c | 361 | \f |
c5aa993b | 362 | |
c906108c SS |
363 | /* Locate all mappable sections of a BFD file. |
364 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
365 | we cast it back to its proper type. */ | |
366 | ||
367 | static void | |
fba45db2 | 368 | add_to_section_table (bfd *abfd, sec_ptr asect, PTR table_pp_char) |
c906108c | 369 | { |
c5aa993b | 370 | struct section_table **table_pp = (struct section_table **) table_pp_char; |
c906108c SS |
371 | flagword aflag; |
372 | ||
373 | aflag = bfd_get_section_flags (abfd, asect); | |
374 | if (!(aflag & SEC_ALLOC)) | |
375 | return; | |
376 | if (0 == bfd_section_size (abfd, asect)) | |
377 | return; | |
378 | (*table_pp)->bfd = abfd; | |
379 | (*table_pp)->the_bfd_section = asect; | |
380 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
381 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
382 | (*table_pp)++; | |
383 | } | |
384 | ||
385 | /* Builds a section table, given args BFD, SECTABLE_PTR, SECEND_PTR. | |
386 | Returns 0 if OK, 1 on error. */ | |
387 | ||
388 | int | |
fba45db2 KB |
389 | build_section_table (bfd *some_bfd, struct section_table **start, |
390 | struct section_table **end) | |
c906108c SS |
391 | { |
392 | unsigned count; | |
393 | ||
394 | count = bfd_count_sections (some_bfd); | |
395 | if (*start) | |
b8c9b27d | 396 | xfree (* start); |
c906108c SS |
397 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); |
398 | *end = *start; | |
c5aa993b | 399 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *) end); |
c906108c | 400 | if (*end > *start + count) |
e1e9e218 | 401 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
402 | /* We could realloc the table, but it probably loses for most files. */ |
403 | return 0; | |
404 | } | |
405 | \f | |
406 | static void | |
fba45db2 | 407 | bfdsec_to_vmap (bfd *abfd, sec_ptr sect, PTR arg3) |
c906108c SS |
408 | { |
409 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *) arg3; | |
410 | struct vmap *vp; | |
411 | ||
412 | vp = vmap_bfd->pvmap; | |
413 | ||
414 | if ((bfd_get_section_flags (abfd, sect) & SEC_LOAD) == 0) | |
415 | return; | |
416 | ||
417 | if (STREQ (bfd_section_name (abfd, sect), ".text")) | |
418 | { | |
419 | vp->tstart = bfd_section_vma (abfd, sect); | |
420 | vp->tend = vp->tstart + bfd_section_size (abfd, sect); | |
421 | vp->tvma = bfd_section_vma (abfd, sect); | |
422 | vp->toffs = sect->filepos; | |
423 | } | |
424 | else if (STREQ (bfd_section_name (abfd, sect), ".data")) | |
425 | { | |
426 | vp->dstart = bfd_section_vma (abfd, sect); | |
427 | vp->dend = vp->dstart + bfd_section_size (abfd, sect); | |
428 | vp->dvma = bfd_section_vma (abfd, sect); | |
429 | } | |
430 | /* Silently ignore other types of sections. (FIXME?) */ | |
431 | } | |
432 | ||
433 | /* Make a vmap for ABFD which might be a member of the archive ARCH. | |
434 | Return the new vmap. */ | |
435 | ||
436 | struct vmap * | |
fba45db2 | 437 | map_vmap (bfd *abfd, bfd *arch) |
c906108c SS |
438 | { |
439 | struct vmap_and_bfd vmap_bfd; | |
440 | struct vmap *vp, **vpp; | |
441 | ||
442 | vp = (struct vmap *) xmalloc (sizeof (*vp)); | |
443 | memset ((char *) vp, '\0', sizeof (*vp)); | |
444 | vp->nxt = 0; | |
445 | vp->bfd = abfd; | |
446 | vp->name = bfd_get_filename (arch ? arch : abfd); | |
447 | vp->member = arch ? bfd_get_filename (abfd) : ""; | |
c5aa993b | 448 | |
c906108c SS |
449 | vmap_bfd.pbfd = arch; |
450 | vmap_bfd.pvmap = vp; | |
451 | bfd_map_over_sections (abfd, bfdsec_to_vmap, &vmap_bfd); | |
452 | ||
453 | /* Find the end of the list and append. */ | |
454 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
455 | ; | |
456 | *vpp = vp; | |
457 | ||
458 | return vp; | |
459 | } | |
460 | \f | |
461 | /* Read or write the exec file. | |
462 | ||
463 | Args are address within a BFD file, address within gdb address-space, | |
464 | length, and a flag indicating whether to read or write. | |
465 | ||
466 | Result is a length: | |
467 | ||
c5aa993b JM |
468 | 0: We cannot handle this address and length. |
469 | > 0: We have handled N bytes starting at this address. | |
470 | (If N == length, we did it all.) We might be able | |
471 | to handle more bytes beyond this length, but no | |
472 | promises. | |
473 | < 0: We cannot handle this address, but if somebody | |
474 | else handles (-N) bytes, we can start from there. | |
c906108c | 475 | |
c5aa993b JM |
476 | The same routine is used to handle both core and exec files; |
477 | we just tail-call it with more arguments to select between them. */ | |
c906108c SS |
478 | |
479 | int | |
fba45db2 | 480 | xfer_memory (CORE_ADDR memaddr, char *myaddr, int len, int write, |
29e57380 | 481 | struct mem_attrib *attrib, |
fba45db2 | 482 | struct target_ops *target) |
c906108c SS |
483 | { |
484 | boolean res; | |
485 | struct section_table *p; | |
486 | CORE_ADDR nextsectaddr, memend; | |
507f3c78 | 487 | boolean (*xfer_fn) (bfd *, sec_ptr, PTR, file_ptr, bfd_size_type); |
88665544 | 488 | asection *section = NULL; |
c906108c SS |
489 | |
490 | if (len <= 0) | |
e1e9e218 | 491 | internal_error (__FILE__, __LINE__, "failed internal consistency check"); |
c906108c SS |
492 | |
493 | if (overlay_debugging) | |
494 | { | |
495 | section = find_pc_overlay (memaddr); | |
496 | if (pc_in_unmapped_range (memaddr, section)) | |
497 | memaddr = overlay_mapped_address (memaddr, section); | |
498 | } | |
499 | ||
500 | memend = memaddr + len; | |
501 | xfer_fn = write ? bfd_set_section_contents : bfd_get_section_contents; | |
502 | nextsectaddr = memend; | |
503 | ||
c906108c SS |
504 | for (p = target->to_sections; p < target->to_sections_end; p++) |
505 | { | |
506 | if (overlay_debugging && section && p->the_bfd_section && | |
507 | strcmp (section->name, p->the_bfd_section->name) != 0) | |
c5aa993b | 508 | continue; /* not the section we need */ |
c906108c | 509 | if (memaddr >= p->addr) |
3db26b01 JB |
510 | { |
511 | if (memend <= p->endaddr) | |
512 | { | |
513 | /* Entire transfer is within this section. */ | |
514 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
515 | memaddr - p->addr, len); | |
516 | return (res != 0) ? len : 0; | |
517 | } | |
518 | else if (memaddr >= p->endaddr) | |
519 | { | |
520 | /* This section ends before the transfer starts. */ | |
521 | continue; | |
522 | } | |
523 | else | |
524 | { | |
525 | /* This section overlaps the transfer. Just do half. */ | |
526 | len = p->endaddr - memaddr; | |
527 | res = xfer_fn (p->bfd, p->the_bfd_section, myaddr, | |
528 | memaddr - p->addr, len); | |
529 | return (res != 0) ? len : 0; | |
530 | } | |
531 | } | |
c906108c SS |
532 | else |
533 | nextsectaddr = min (nextsectaddr, p->addr); | |
534 | } | |
535 | ||
536 | if (nextsectaddr >= memend) | |
c5aa993b | 537 | return 0; /* We can't help */ |
c906108c | 538 | else |
c5aa993b | 539 | return -(nextsectaddr - memaddr); /* Next boundary where we can help */ |
c906108c | 540 | } |
c906108c | 541 | \f |
c5aa993b | 542 | |
c906108c | 543 | void |
fba45db2 | 544 | print_section_info (struct target_ops *t, bfd *abfd) |
c906108c SS |
545 | { |
546 | struct section_table *p; | |
547 | ||
c5aa993b | 548 | printf_filtered ("\t`%s', ", bfd_get_filename (abfd)); |
c906108c | 549 | wrap_here (" "); |
c5aa993b | 550 | printf_filtered ("file type %s.\n", bfd_get_target (abfd)); |
c906108c SS |
551 | if (abfd == exec_bfd) |
552 | { | |
553 | printf_filtered ("\tEntry point: "); | |
554 | print_address_numeric (bfd_get_start_address (abfd), 1, gdb_stdout); | |
555 | printf_filtered ("\n"); | |
556 | } | |
557 | for (p = t->to_sections; p < t->to_sections_end; p++) | |
558 | { | |
559 | /* FIXME-32x64 need a print_address_numeric with field width */ | |
560 | printf_filtered ("\t%s", local_hex_string_custom ((unsigned long) p->addr, "08l")); | |
561 | printf_filtered (" - %s", local_hex_string_custom ((unsigned long) p->endaddr, "08l")); | |
562 | if (info_verbose) | |
563 | printf_filtered (" @ %s", | |
564 | local_hex_string_custom ((unsigned long) p->the_bfd_section->filepos, "08l")); | |
565 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->the_bfd_section)); | |
566 | if (p->bfd != abfd) | |
567 | { | |
568 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); | |
569 | } | |
570 | printf_filtered ("\n"); | |
571 | } | |
572 | } | |
573 | ||
574 | static void | |
fba45db2 | 575 | exec_files_info (struct target_ops *t) |
c906108c SS |
576 | { |
577 | print_section_info (t, exec_bfd); | |
578 | ||
579 | if (vmap) | |
580 | { | |
581 | struct vmap *vp; | |
582 | ||
583 | printf_unfiltered ("\tMapping info for file `%s'.\n", vmap->name); | |
d4f3574e SS |
584 | printf_unfiltered ("\t %*s %*s %*s %*s %8.8s %s\n", |
585 | strlen_paddr (), "tstart", | |
586 | strlen_paddr (), "tend", | |
587 | strlen_paddr (), "dstart", | |
588 | strlen_paddr (), "dend", | |
589 | "section", | |
c5aa993b JM |
590 | "file(member)"); |
591 | ||
592 | for (vp = vmap; vp; vp = vp->nxt) | |
d4f3574e SS |
593 | printf_unfiltered ("\t0x%s 0x%s 0x%s 0x%s %s%s%s%s\n", |
594 | paddr (vp->tstart), | |
595 | paddr (vp->tend), | |
596 | paddr (vp->dstart), | |
597 | paddr (vp->dend), | |
598 | vp->name, | |
c5aa993b JM |
599 | *vp->member ? "(" : "", vp->member, |
600 | *vp->member ? ")" : ""); | |
c906108c SS |
601 | } |
602 | } | |
603 | ||
0f71a2f6 JM |
604 | /* msnyder 5/21/99: |
605 | exec_set_section_offsets sets the offsets of all the sections | |
606 | in the exec objfile. */ | |
607 | ||
608 | void | |
fba45db2 KB |
609 | exec_set_section_offsets (bfd_signed_vma text_off, bfd_signed_vma data_off, |
610 | bfd_signed_vma bss_off) | |
0f71a2f6 JM |
611 | { |
612 | struct section_table *sect; | |
c5aa993b JM |
613 | |
614 | for (sect = exec_ops.to_sections; | |
615 | sect < exec_ops.to_sections_end; | |
0f71a2f6 JM |
616 | sect++) |
617 | { | |
618 | flagword flags; | |
619 | ||
620 | flags = bfd_get_section_flags (exec_bfd, sect->the_bfd_section); | |
621 | ||
622 | if (flags & SEC_CODE) | |
623 | { | |
c5aa993b | 624 | sect->addr += text_off; |
0f71a2f6 JM |
625 | sect->endaddr += text_off; |
626 | } | |
627 | else if (flags & (SEC_DATA | SEC_LOAD)) | |
628 | { | |
c5aa993b | 629 | sect->addr += data_off; |
0f71a2f6 JM |
630 | sect->endaddr += data_off; |
631 | } | |
632 | else if (flags & SEC_ALLOC) | |
633 | { | |
c5aa993b | 634 | sect->addr += bss_off; |
0f71a2f6 JM |
635 | sect->endaddr += bss_off; |
636 | } | |
637 | } | |
638 | } | |
639 | ||
c906108c | 640 | static void |
fba45db2 | 641 | set_section_command (char *args, int from_tty) |
c906108c SS |
642 | { |
643 | struct section_table *p; | |
644 | char *secname; | |
645 | unsigned seclen; | |
646 | unsigned long secaddr; | |
647 | char secprint[100]; | |
648 | long offset; | |
649 | ||
650 | if (args == 0) | |
651 | error ("Must specify section name and its virtual address"); | |
652 | ||
653 | /* Parse out section name */ | |
c5aa993b | 654 | for (secname = args; !isspace (*args); args++); |
c906108c SS |
655 | seclen = args - secname; |
656 | ||
657 | /* Parse out new virtual address */ | |
658 | secaddr = parse_and_eval_address (args); | |
659 | ||
c5aa993b JM |
660 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) |
661 | { | |
662 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->the_bfd_section), seclen) | |
663 | && bfd_section_name (exec_bfd, p->the_bfd_section)[seclen] == '\0') | |
664 | { | |
665 | offset = secaddr - p->addr; | |
666 | p->addr += offset; | |
667 | p->endaddr += offset; | |
668 | if (from_tty) | |
669 | exec_files_info (&exec_ops); | |
670 | return; | |
671 | } | |
c906108c | 672 | } |
c906108c SS |
673 | if (seclen >= sizeof (secprint)) |
674 | seclen = sizeof (secprint) - 1; | |
675 | strncpy (secprint, secname, seclen); | |
676 | secprint[seclen] = '\0'; | |
677 | error ("Section %s not found", secprint); | |
678 | } | |
679 | ||
680 | /* If mourn is being called in all the right places, this could be say | |
681 | `gdb internal error' (since generic_mourn calls | |
682 | breakpoint_init_inferior). */ | |
683 | ||
684 | static int | |
fba45db2 | 685 | ignore (CORE_ADDR addr, char *contents) |
c906108c SS |
686 | { |
687 | return 0; | |
688 | } | |
689 | ||
be4d1333 MS |
690 | /* Find mapped memory. */ |
691 | ||
692 | extern void | |
693 | exec_set_find_memory_regions (int (*func) (int (*) (CORE_ADDR, | |
694 | unsigned long, | |
695 | int, int, int, | |
696 | void *), | |
697 | void *)) | |
698 | { | |
699 | exec_ops.to_find_memory_regions = func; | |
700 | } | |
701 | ||
702 | static char *exec_make_note_section (bfd *, int *); | |
703 | ||
c906108c SS |
704 | /* Fill in the exec file target vector. Very few entries need to be |
705 | defined. */ | |
706 | ||
be4d1333 | 707 | static void |
fba45db2 | 708 | init_exec_ops (void) |
c906108c SS |
709 | { |
710 | exec_ops.to_shortname = "exec"; | |
711 | exec_ops.to_longname = "Local exec file"; | |
712 | exec_ops.to_doc = "Use an executable file as a target.\n\ | |
713 | Specify the filename of the executable file."; | |
1adeb98a | 714 | exec_ops.to_open = exec_open; |
c906108c SS |
715 | exec_ops.to_close = exec_close; |
716 | exec_ops.to_attach = find_default_attach; | |
717 | exec_ops.to_require_attach = find_default_require_attach; | |
718 | exec_ops.to_require_detach = find_default_require_detach; | |
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; | |
724 | exec_ops.to_clone_and_follow_inferior = find_default_clone_and_follow_inferior; | |
725 | exec_ops.to_stratum = file_stratum; | |
726 | exec_ops.to_has_memory = 1; | |
be4d1333 | 727 | exec_ops.to_make_corefile_notes = exec_make_note_section; |
c5aa993b | 728 | exec_ops.to_magic = OPS_MAGIC; |
c906108c SS |
729 | } |
730 | ||
731 | void | |
fba45db2 | 732 | _initialize_exec (void) |
c906108c SS |
733 | { |
734 | struct cmd_list_element *c; | |
735 | ||
736 | init_exec_ops (); | |
737 | ||
738 | if (!dbx_commands) | |
739 | { | |
740 | c = add_cmd ("file", class_files, file_command, | |
741 | "Use FILE as program to be debugged.\n\ | |
742 | It is read for its symbols, for getting the contents of pure memory,\n\ | |
743 | and it is the program executed when you use the `run' command.\n\ | |
744 | If FILE cannot be found as specified, your execution directory path\n\ | |
745 | ($PATH) is searched for a command of that name.\n\ | |
746 | No arg means to have no executable file and no symbols.", &cmdlist); | |
5ba2abeb | 747 | set_cmd_completer (c, filename_completer); |
c906108c SS |
748 | } |
749 | ||
750 | c = add_cmd ("exec-file", class_files, exec_file_command, | |
c5aa993b | 751 | "Use FILE as program for getting contents of pure memory.\n\ |
c906108c SS |
752 | If FILE cannot be found as specified, your execution directory path\n\ |
753 | is searched for a command of that name.\n\ | |
754 | No arg means have no executable file.", &cmdlist); | |
5ba2abeb | 755 | set_cmd_completer (c, filename_completer); |
c906108c SS |
756 | |
757 | add_com ("section", class_files, set_section_command, | |
c5aa993b | 758 | "Change the base address of section SECTION of the exec file to ADDR.\n\ |
c906108c SS |
759 | This can be used if the exec file does not contain section addresses,\n\ |
760 | (such as in the a.out format), or when the addresses specified in the\n\ | |
761 | file itself are wrong. Each section must be changed separately. The\n\ | |
762 | ``info files'' command lists all the sections and their addresses."); | |
763 | ||
764 | add_show_from_set | |
c5aa993b | 765 | (add_set_cmd ("write", class_support, var_boolean, (char *) &write_files, |
c906108c SS |
766 | "Set writing into executable and core files.", |
767 | &setlist), | |
768 | &showlist); | |
c5aa993b | 769 | |
c906108c SS |
770 | add_target (&exec_ops); |
771 | } | |
be4d1333 MS |
772 | |
773 | static char * | |
774 | exec_make_note_section (bfd *obfd, int *note_size) | |
775 | { | |
c564377f | 776 | error ("Can't create a corefile"); |
be4d1333 | 777 | } |