Commit | Line | Data |
---|---|---|
41abdfbd | 1 | /* Execute AIXcoff files, for GDB. |
e17960fb | 2 | Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc. |
41abdfbd JG |
3 | Derived from exec.c. Modified by IBM Corporation. |
4 | Donated by IBM Corporation and Cygnus Support. | |
5 | ||
6 | This file is part of GDB. | |
7 | ||
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. | |
12 | ||
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. | |
17 | ||
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., 675 Mass Ave, Cambridge, MA 02139, USA. */ | |
21 | ||
22 | /* xcoff-exec - deal with executing XCOFF files. */ | |
23 | ||
d747e0af MT |
24 | #include "defs.h" |
25 | ||
41abdfbd JG |
26 | #include <sys/types.h> |
27 | #include <sys/param.h> | |
28 | #include <fcntl.h> | |
29 | #include <string.h> | |
30 | #include <ctype.h> | |
31 | #include <sys/stat.h> | |
32 | #include <sys/ldr.h> | |
33 | ||
41abdfbd JG |
34 | #include "frame.h" |
35 | #include "inferior.h" | |
36 | #include "target.h" | |
37 | #include "gdbcmd.h" | |
38 | #include "gdbcore.h" | |
39 | #include "symfile.h" | |
5e2e79f8 | 40 | #include "objfiles.h" |
41abdfbd JG |
41 | |
42 | #include "libbfd.h" /* BFD internals (sigh!) FIXME */ | |
2aefe6e4 | 43 | #include "bfd.h" |
1eeba686 | 44 | #include "xcoffsolib.h" |
41abdfbd | 45 | |
1ab3bf1b JG |
46 | /* Prototypes for local functions */ |
47 | ||
1ab3bf1b JG |
48 | static void |
49 | file_command PARAMS ((char *, int)); | |
50 | ||
51 | static void | |
52 | exec_close PARAMS ((int)); | |
53 | ||
2aefe6e4 JK |
54 | static struct vmap * |
55 | map_vmap PARAMS ((bfd *, bfd *)); | |
56 | ||
41abdfbd JG |
57 | struct section_table *exec_sections, *exec_sections_end; |
58 | ||
41abdfbd JG |
59 | /* Whether to open exec and core files read-only or read-write. */ |
60 | ||
61 | int write_files = 0; | |
62 | ||
818de002 PB |
63 | extern int info_verbose; |
64 | ||
41abdfbd JG |
65 | bfd *exec_bfd; /* needed by core.c */ |
66 | ||
67 | extern char *getenv(); | |
41abdfbd JG |
68 | extern void add_syms_addr_command (); |
69 | extern void symbol_file_command (); | |
70 | static void exec_files_info(); | |
1eeba686 PB |
71 | |
72 | struct vmap *vmap; /* current vmap */ | |
41abdfbd JG |
73 | |
74 | extern struct target_ops exec_ops; | |
75 | ||
76 | ||
77 | /* exec_close - done with exec file, clean up all resources. */ | |
78 | ||
1ab3bf1b | 79 | static void |
818de002 PB |
80 | exec_close(quitting) |
81 | { | |
82 | register struct vmap *vp, *nxt; | |
83 | struct objfile *obj; | |
0eb22669 | 84 | int need_symtab_cleanup = 0; |
818de002 PB |
85 | |
86 | for (nxt = vmap; vp = nxt; ) | |
87 | { | |
88 | nxt = vp->nxt; | |
89 | ||
90 | /* if there is an objfile associated with this bfd, | |
91 | free_objfile() will do proper cleanup of objfile *and* bfd. */ | |
92 | ||
2aefe6e4 | 93 | if (vp->objfile) |
0eb22669 PS |
94 | { |
95 | free_objfile (vp->objfile); | |
96 | need_symtab_cleanup = 1; | |
97 | } | |
818de002 PB |
98 | else |
99 | bfd_close(vp->bfd); | |
2aefe6e4 JK |
100 | |
101 | /* FIXME: This routine is #if 0'd in symfile.c. What should we | |
102 | be doing here? Should we just free everything in | |
103 | vp->objfile->symtabs? Should free_objfile do that? */ | |
818de002 PB |
104 | free_named_symtabs(vp->name); |
105 | free(vp); | |
106 | } | |
107 | ||
108 | vmap = 0; | |
507e4004 | 109 | |
c161de74 JK |
110 | /* exec_bfd was already closed (the exec file has a vmap entry). */ |
111 | exec_bfd = NULL; | |
112 | ||
507e4004 PB |
113 | if (exec_ops.to_sections) { |
114 | free (exec_ops.to_sections); | |
115 | exec_ops.to_sections = NULL; | |
116 | exec_ops.to_sections_end = NULL; | |
117 | } | |
0eb22669 PS |
118 | |
119 | if (need_symtab_cleanup) | |
120 | clear_symtab_users (); | |
41abdfbd JG |
121 | } |
122 | ||
123 | /* | |
124 | * exec_file_command - handle the "exec" command, &c. | |
125 | */ | |
126 | void | |
127 | exec_file_command(filename, from_tty) | |
128 | char *filename; | |
129 | { | |
41abdfbd | 130 | target_preopen(from_tty); |
507e4004 PB |
131 | |
132 | /* Remove any previous exec file. */ | |
41abdfbd JG |
133 | unpush_target(&exec_ops); |
134 | ||
135 | /* Now open and digest the file the user requested, if any. */ | |
136 | ||
137 | if (filename) { | |
138 | char *scratch_pathname; | |
139 | int scratch_chan; | |
140 | ||
141 | filename = tilde_expand(filename); | |
1ab3bf1b | 142 | make_cleanup (free, filename); |
41abdfbd | 143 | |
507e4004 PB |
144 | scratch_chan = openp(getenv("PATH"), 1, filename, |
145 | write_files? O_RDWR: O_RDONLY, 0, | |
146 | &scratch_pathname); | |
41abdfbd JG |
147 | if (scratch_chan < 0) |
148 | perror_with_name(filename); | |
149 | ||
0685d95f | 150 | exec_bfd = bfd_fdopenr(scratch_pathname, gnutarget, scratch_chan); |
507e4004 | 151 | if (!exec_bfd) |
41abdfbd JG |
152 | error("Could not open `%s' as an executable file: %s" |
153 | , scratch_pathname, bfd_errmsg(bfd_error)); | |
154 | ||
155 | /* make sure we have an object file */ | |
156 | ||
507e4004 PB |
157 | if (!bfd_check_format(exec_bfd, bfd_object)) |
158 | error("\"%s\": not in executable format: %s.", | |
159 | scratch_pathname, bfd_errmsg(bfd_error)); | |
41abdfbd JG |
160 | |
161 | ||
162 | /* setup initial vmap */ | |
163 | ||
507e4004 | 164 | map_vmap (exec_bfd, 0); |
41abdfbd | 165 | if (!vmap) |
507e4004 PB |
166 | error("Can't find the file sections in `%s': %s", |
167 | exec_bfd->filename, bfd_errmsg(bfd_error)); | |
41abdfbd | 168 | |
507e4004 PB |
169 | if (build_section_table (exec_bfd, &exec_ops.to_sections, |
170 | &exec_ops.to_sections_end)) | |
41abdfbd JG |
171 | error ("Can't find the file sections in `%s': %s", |
172 | exec_bfd->filename, bfd_errmsg (bfd_error)); | |
173 | ||
174 | /* make sure core, if present, matches */ | |
175 | validate_files(); | |
176 | ||
177 | push_target(&exec_ops); | |
178 | ||
179 | /* Tell display code(if any) about the changed file name. */ | |
180 | ||
181 | if (exec_file_display_hook) | |
182 | (*exec_file_display_hook)(filename); | |
183 | } | |
184 | else { | |
185 | exec_close(0); /* just in case */ | |
186 | if (from_tty) | |
187 | printf("No exec file now.\n"); | |
188 | } | |
189 | } | |
190 | ||
191 | /* Set both the exec file and the symbol file, in one command. What a | |
192 | * novelty. Why did GDB go through four major releases before this | |
193 | * command was added? | |
194 | */ | |
1ab3bf1b | 195 | static void |
41abdfbd JG |
196 | file_command(arg, from_tty) |
197 | char *arg; { | |
198 | ||
199 | exec_file_command(arg, from_tty); | |
200 | symbol_file_command(arg, from_tty); | |
201 | } | |
202 | ||
203 | /* Locate all mappable sections of a BFD file. | |
204 | table_pp_char is a char * to get it through bfd_map_over_sections; | |
205 | we cast it back to its proper type. */ | |
206 | ||
1ab3bf1b | 207 | static void |
41abdfbd JG |
208 | add_to_section_table (abfd, asect, table_pp_char) |
209 | bfd *abfd; | |
210 | sec_ptr asect; | |
211 | char *table_pp_char; | |
212 | { | |
213 | struct section_table **table_pp = (struct section_table **)table_pp_char; | |
214 | flagword aflag; | |
215 | ||
216 | aflag = bfd_get_section_flags (abfd, asect); | |
217 | /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */ | |
218 | if (!(aflag & SEC_LOAD)) | |
219 | return; | |
507e4004 PB |
220 | if (0 == bfd_section_size (abfd, asect)) |
221 | return; | |
222 | (*table_pp)->bfd = abfd; | |
41abdfbd JG |
223 | (*table_pp)->sec_ptr = asect; |
224 | (*table_pp)->addr = bfd_section_vma (abfd, asect); | |
225 | (*table_pp)->endaddr = (*table_pp)->addr + bfd_section_size (abfd, asect); | |
226 | (*table_pp)++; | |
227 | } | |
228 | ||
229 | int | |
230 | build_section_table (some_bfd, start, end) | |
231 | bfd *some_bfd; | |
232 | struct section_table **start, **end; | |
233 | { | |
234 | unsigned count; | |
235 | ||
236 | count = bfd_count_sections (some_bfd); | |
237 | if (count == 0) | |
0848ad1c | 238 | fatal ("aborting"); /* return 1? */ |
41abdfbd JG |
239 | if (*start) |
240 | free (*start); | |
241 | *start = (struct section_table *) xmalloc (count * sizeof (**start)); | |
242 | *end = *start; | |
243 | bfd_map_over_sections (some_bfd, add_to_section_table, (char *)end); | |
244 | if (*end > *start + count) | |
0848ad1c | 245 | fatal ("aborting"); |
41abdfbd JG |
246 | /* We could realloc the table, but it probably loses for most files. */ |
247 | return 0; | |
248 | } | |
2aefe6e4 | 249 | \f |
41abdfbd | 250 | void |
359a097f | 251 | sex_to_vmap(bfd *bf, sec_ptr sex, PTR arg3) |
41abdfbd | 252 | { |
359a097f | 253 | struct vmap_and_bfd *vmap_bfd = (struct vmap_and_bfd *)arg3; |
41abdfbd JG |
254 | register struct vmap *vp, **vpp; |
255 | register struct symtab *syms; | |
256 | bfd *arch = vmap_bfd->pbfd; | |
257 | vp = vmap_bfd->pvmap; | |
258 | ||
259 | if ((bfd_get_section_flags(bf, sex) & SEC_LOAD) == 0) | |
260 | return; | |
261 | ||
2e4964ad | 262 | if (STREQ(bfd_section_name(bf, sex), ".text")) { |
41abdfbd JG |
263 | vp->tstart = 0; |
264 | vp->tend = vp->tstart + bfd_section_size(bf, sex); | |
265 | ||
507e4004 PB |
266 | /* When it comes to this adjustment value, in contrast to our previous |
267 | belief shared objects should behave the same as the main load segment. | |
268 | This is the offset from the beginning of text section to the first | |
269 | real instruction. */ | |
270 | ||
271 | vp->tadj = sex->filepos - bfd_section_vma(bf, sex); | |
41abdfbd JG |
272 | } |
273 | ||
2e4964ad | 274 | else if (STREQ(bfd_section_name(bf, sex), ".data")) { |
41abdfbd JG |
275 | vp->dstart = 0; |
276 | vp->dend = vp->dstart + bfd_section_size(bf, sex); | |
277 | } | |
278 | ||
2e4964ad | 279 | else if (STREQ(bfd_section_name(bf, sex), ".bss")) /* FIXMEmgo */ |
41abdfbd JG |
280 | printf ("bss section in exec! Don't know what the heck to do!\n"); |
281 | } | |
282 | ||
283 | /* Make a vmap for the BFD "bf", which might be a member of the archive | |
2aefe6e4 JK |
284 | BFD "arch". Return the new vmap. */ |
285 | struct vmap * | |
41abdfbd JG |
286 | map_vmap (bfd *bf, bfd *arch) |
287 | { | |
288 | struct vmap_and_bfd vmap_bfd; | |
289 | struct vmap *vp, **vpp; | |
290 | struct objfile *obj; | |
41abdfbd JG |
291 | |
292 | vp = (void*) xmalloc (sizeof (*vp)); | |
1eeba686 | 293 | bzero (vp, sizeof (*vp)); |
41abdfbd JG |
294 | vp->nxt = 0; |
295 | vp->bfd = bf; | |
296 | vp->name = bfd_get_filename(arch ? arch : bf); | |
297 | vp->member = arch ? bfd_get_filename(bf) : ""; | |
298 | ||
299 | vmap_bfd.pbfd = arch; | |
300 | vmap_bfd.pvmap = vp; | |
301 | bfd_map_over_sections (bf, sex_to_vmap, &vmap_bfd); | |
302 | ||
41abdfbd JG |
303 | /* find the end of the list, and append. */ |
304 | for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt) | |
305 | ; | |
306 | *vpp = vp; | |
2aefe6e4 JK |
307 | |
308 | return vp; | |
41abdfbd JG |
309 | } |
310 | ||
507e4004 | 311 | |
41abdfbd JG |
312 | /* vmap_symtab - handle symbol translation on vmapping */ |
313 | ||
3c02636b JK |
314 | static void |
315 | vmap_symtab (vp) | |
316 | register struct vmap *vp; | |
41abdfbd | 317 | { |
1ab3bf1b | 318 | register struct objfile *objfile; |
3c02636b JK |
319 | asection *textsec; |
320 | asection *datasec; | |
321 | asection *bsssec; | |
4365c36c JK |
322 | CORE_ADDR text_delta; |
323 | CORE_ADDR data_delta; | |
324 | CORE_ADDR bss_delta; | |
3c02636b JK |
325 | struct section_offsets *new_offsets; |
326 | int i; | |
1ab3bf1b | 327 | |
2aefe6e4 JK |
328 | objfile = vp->objfile; |
329 | if (objfile == NULL) | |
1ab3bf1b | 330 | { |
2aefe6e4 JK |
331 | /* OK, it's not an objfile we opened ourselves. |
332 | Currently, that can only happen with the exec file, so | |
333 | relocate the symbols for the symfile. */ | |
334 | if (symfile_objfile == NULL) | |
335 | return; | |
336 | objfile = symfile_objfile; | |
337 | } | |
cbf15d9a | 338 | |
3c02636b JK |
339 | new_offsets = alloca |
340 | (sizeof (struct section_offsets) | |
341 | + sizeof (new_offsets->offsets) * objfile->num_sections); | |
556f3d90 | 342 | |
3c02636b JK |
343 | for (i = 0; i < objfile->num_sections; ++i) |
344 | ANOFFSET (new_offsets, i) = ANOFFSET (objfile->section_offsets, i); | |
1ab3bf1b | 345 | |
3c02636b | 346 | textsec = bfd_get_section_by_name (vp->bfd, ".text"); |
4365c36c JK |
347 | text_delta = |
348 | vp->tstart - ANOFFSET (objfile->section_offsets, textsec->target_index); | |
3c02636b | 349 | ANOFFSET (new_offsets, textsec->target_index) = vp->tstart; |
4365c36c | 350 | |
3c02636b | 351 | datasec = bfd_get_section_by_name (vp->bfd, ".data"); |
4365c36c JK |
352 | data_delta = |
353 | vp->dstart - ANOFFSET (objfile->section_offsets, datasec->target_index); | |
3c02636b | 354 | ANOFFSET (new_offsets, datasec->target_index) = vp->dstart; |
4365c36c | 355 | |
3c02636b | 356 | bsssec = bfd_get_section_by_name (vp->bfd, ".bss"); |
4365c36c JK |
357 | bss_delta = |
358 | vp->dstart - ANOFFSET (objfile->section_offsets, bsssec->target_index); | |
3c02636b JK |
359 | ANOFFSET (new_offsets, bsssec->target_index) = vp->dstart; |
360 | ||
361 | objfile_relocate (objfile, new_offsets); | |
4365c36c JK |
362 | |
363 | { | |
364 | struct obj_section *s; | |
365 | for (s = objfile->sections; s < objfile->sections_end; ++s) | |
366 | { | |
367 | if (s->sec_ptr->target_index == textsec->target_index) | |
368 | { | |
369 | s->addr += text_delta; | |
370 | s->endaddr += text_delta; | |
371 | } | |
372 | else if (s->sec_ptr->target_index == datasec->target_index) | |
373 | { | |
374 | s->addr += data_delta; | |
375 | s->endaddr += data_delta; | |
376 | } | |
377 | else if (s->sec_ptr->target_index == bsssec->target_index) | |
378 | { | |
379 | s->addr += bss_delta; | |
380 | s->endaddr += bss_delta; | |
381 | } | |
382 | } | |
383 | } | |
3c02636b | 384 | |
4365c36c | 385 | if (text_delta != 0) |
3c02636b | 386 | /* breakpoints need to be relocated as well. */ |
4365c36c | 387 | fixup_breakpoints (0, TEXT_SEGMENT_BASE, text_delta); |
41abdfbd JG |
388 | } |
389 | ||
8112a711 JK |
390 | /* Add symbols for an objfile. */ |
391 | static int | |
392 | objfile_symbol_add (arg) | |
393 | char *arg; | |
394 | { | |
395 | struct objfile *obj = (struct objfile *) arg; | |
396 | syms_from_objfile (obj, 0, 0, 0); | |
397 | new_symfile_objfile (obj, 0, 0); | |
398 | return 1; | |
399 | } | |
400 | ||
2aefe6e4 JK |
401 | static struct vmap *add_vmap PARAMS ((struct ld_info *)); |
402 | ||
403 | /* Add a new vmap entry based on ldinfo() information. | |
404 | ||
405 | If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a | |
406 | core file), the caller should set it to -1, and we will open the file. | |
407 | ||
408 | Return the vmap new entry. */ | |
409 | static struct vmap * | |
41abdfbd | 410 | add_vmap(ldi) |
2aefe6e4 JK |
411 | register struct ld_info *ldi; |
412 | { | |
41abdfbd | 413 | bfd *bfd, *last; |
507e4004 | 414 | register char *mem, *objname; |
2aefe6e4 JK |
415 | struct objfile *obj; |
416 | struct vmap *vp; | |
507e4004 PB |
417 | |
418 | /* This ldi structure was allocated using alloca() in | |
9b280a7f | 419 | xcoff_relocate_symtab(). Now we need to have persistent object |
507e4004 | 420 | and member names, so we should save them. */ |
41abdfbd JG |
421 | |
422 | mem = ldi->ldinfo_filename + strlen(ldi->ldinfo_filename) + 1; | |
507e4004 PB |
423 | mem = savestring (mem, strlen (mem)); |
424 | objname = savestring (ldi->ldinfo_filename, strlen (ldi->ldinfo_filename)); | |
425 | ||
2aefe6e4 JK |
426 | if (ldi->ldinfo_fd < 0) |
427 | /* Note that this opens it once for every member; a possible | |
428 | enhancement would be to only open it once for every object. */ | |
0685d95f | 429 | bfd = bfd_openr (objname, gnutarget); |
2aefe6e4 | 430 | else |
0685d95f | 431 | bfd = bfd_fdopenr(objname, gnutarget, ldi->ldinfo_fd); |
41abdfbd | 432 | if (!bfd) |
507e4004 PB |
433 | error("Could not open `%s' as an executable file: %s", |
434 | objname, bfd_errmsg(bfd_error)); | |
41abdfbd JG |
435 | |
436 | ||
437 | /* make sure we have an object file */ | |
438 | ||
439 | if (bfd_check_format(bfd, bfd_object)) | |
2aefe6e4 | 440 | vp = map_vmap (bfd, 0); |
41abdfbd JG |
441 | |
442 | else if (bfd_check_format(bfd, bfd_archive)) { | |
443 | last = 0; | |
444 | /* | |
445 | * FIXME??? am I tossing BFDs? bfd? | |
446 | */ | |
447 | while (last = bfd_openr_next_archived_file(bfd, last)) | |
2e4964ad | 448 | if (STREQ(mem, last->filename)) |
41abdfbd JG |
449 | break; |
450 | ||
451 | if (!last) { | |
507e4004 PB |
452 | bfd_close(bfd); |
453 | /* FIXME -- should be error */ | |
454 | warning("\"%s\": member \"%s\" missing.", bfd->filename, mem); | |
455 | return; | |
41abdfbd JG |
456 | } |
457 | ||
458 | if (!bfd_check_format(last, bfd_object)) { | |
459 | bfd_close(last); /* XXX??? */ | |
460 | goto obj_err; | |
461 | } | |
462 | ||
2aefe6e4 | 463 | vp = map_vmap (last, bfd); |
41abdfbd JG |
464 | } |
465 | else { | |
466 | obj_err: | |
467 | bfd_close(bfd); | |
2aefe6e4 JK |
468 | error ("\"%s\": not in executable format: %s.", |
469 | objname, bfd_errmsg(bfd_error)); | |
470 | /*NOTREACHED*/ | |
41abdfbd | 471 | } |
2aefe6e4 JK |
472 | obj = allocate_objfile (vp->bfd, 0); |
473 | vp->objfile = obj; | |
474 | ||
475 | #ifndef SOLIB_SYMBOLS_MANUAL | |
8112a711 | 476 | if (catch_errors (objfile_symbol_add, (char *)obj, |
9748446f JK |
477 | "Error while reading shared library symbols:\n", |
478 | RETURN_MASK_ALL)) | |
8112a711 JK |
479 | { |
480 | /* Note this is only done if symbol reading was successful. */ | |
3c02636b | 481 | vmap_symtab (vp); |
8112a711 JK |
482 | vp->loaded = 1; |
483 | } | |
2aefe6e4 JK |
484 | #endif |
485 | return vp; | |
41abdfbd JG |
486 | } |
487 | ||
488 | ||
507e4004 PB |
489 | /* As well as symbol tables, exec_sections need relocation. After |
490 | the inferior process' termination, there will be a relocated symbol | |
491 | table exist with no corresponding inferior process. At that time, we | |
492 | need to use `exec' bfd, rather than the inferior process's memory space | |
493 | to look up symbols. | |
494 | ||
495 | `exec_sections' need to be relocated only once, as long as the exec | |
496 | file remains unchanged. | |
41abdfbd JG |
497 | */ |
498 | vmap_exec () | |
499 | { | |
500 | static bfd *execbfd; | |
1e939db1 SG |
501 | int i; |
502 | ||
41abdfbd JG |
503 | if (execbfd == exec_bfd) |
504 | return; | |
505 | ||
506 | execbfd = exec_bfd; | |
507 | ||
1e939db1 SG |
508 | if (!vmap || !exec_ops.to_sections) |
509 | error ("vmap_exec: vmap or exec_ops.to_sections == 0\n"); | |
507e4004 | 510 | |
1e939db1 SG |
511 | for (i=0; &exec_ops.to_sections[i] < exec_ops.to_sections_end; i++) |
512 | { | |
2e4964ad | 513 | if (STREQ(".text", exec_ops.to_sections[i].sec_ptr->name)) |
1e939db1 SG |
514 | { |
515 | exec_ops.to_sections[i].addr += vmap->tstart; | |
516 | exec_ops.to_sections[i].endaddr += vmap->tstart; | |
517 | } | |
2e4964ad | 518 | else if (STREQ(".data", exec_ops.to_sections[i].sec_ptr->name)) |
1e939db1 SG |
519 | { |
520 | exec_ops.to_sections[i].addr += vmap->dstart; | |
521 | exec_ops.to_sections[i].endaddr += vmap->dstart; | |
522 | } | |
523 | } | |
41abdfbd JG |
524 | } |
525 | ||
2aefe6e4 JK |
526 | #if 0 |
527 | /* This was for the old, half-assed, core file support. */ | |
41abdfbd JG |
528 | int |
529 | text_adjustment (abfd) | |
530 | bfd *abfd; | |
531 | { | |
532 | static bfd *execbfd; | |
533 | static int adjustment; | |
534 | sec_ptr sect; | |
535 | ||
536 | if (exec_bfd == execbfd) | |
537 | return adjustment; | |
538 | ||
539 | sect = bfd_get_section_by_name (abfd, ".text"); | |
540 | if (sect) | |
541 | adjustment = sect->filepos - sect->vma; | |
542 | else | |
543 | adjustment = 0x200; /* just a wild assumption */ | |
544 | ||
545 | return adjustment; | |
546 | } | |
2aefe6e4 | 547 | #endif |
41abdfbd JG |
548 | |
549 | /* | |
550 | * vmap_ldinfo - update VMAP info with ldinfo() information | |
551 | * | |
552 | * Input: | |
553 | * ldi - ^ to ldinfo() results. | |
554 | */ | |
555 | vmap_ldinfo(ldi) | |
556 | register struct ld_info *ldi; | |
557 | { | |
558 | struct stat ii, vi; | |
559 | register struct vmap *vp; | |
560 | register got_one, retried; | |
561 | CORE_ADDR ostart; | |
562 | ||
563 | /* | |
564 | * for each *ldi, see if we have a corresponding *vp | |
565 | * if so, update the mapping, and symbol table. | |
566 | * if not, add an entry and symbol table. | |
567 | */ | |
568 | do { | |
569 | char *name = ldi->ldinfo_filename; | |
570 | char *memb = name + strlen(name) + 1; | |
571 | ||
572 | retried = 0; | |
573 | ||
574 | if (fstat(ldi->ldinfo_fd, &ii) < 0) | |
575 | fatal("cannot fstat(%d) on %s" | |
576 | , ldi->ldinfo_fd | |
577 | , name); | |
578 | retry: | |
579 | for (got_one = 0, vp = vmap; vp; vp = vp->nxt) { | |
1eeba686 PB |
580 | FILE *io; |
581 | ||
582 | /* First try to find a `vp', which is the same as in ldinfo. | |
583 | If not the same, just continue and grep the next `vp'. If same, | |
584 | relocate its tstart, tend, dstart, dend values. If no such `vp' | |
585 | found, get out of this for loop, add this ldi entry as a new vmap | |
586 | (add_vmap) and come back, fins its `vp' and so on... */ | |
587 | ||
588 | /* The filenames are not always sufficient to match on. */ | |
41abdfbd | 589 | |
9116f7c7 | 590 | if ((name[0] == '/' && !STREQ(name, vp->name)) |
2e4964ad | 591 | || (memb[0] && !STREQ(memb, vp->member))) |
1eeba686 | 592 | continue; |
41abdfbd | 593 | |
1eeba686 PB |
594 | io = bfd_cache_lookup(vp->bfd); /* totally opaque! */ |
595 | if (!io) | |
596 | fatal("cannot find BFD's iostream for %s", vp->name); | |
41abdfbd | 597 | |
1eeba686 | 598 | /* see if we are referring to the same file */ |
41abdfbd | 599 | |
1eeba686 PB |
600 | if (fstat(fileno(io), &vi) < 0) |
601 | fatal("cannot fstat BFD for %s", vp->name); | |
41abdfbd | 602 | |
1eeba686 PB |
603 | if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino) |
604 | continue; | |
41abdfbd | 605 | |
1eeba686 PB |
606 | if (!retried) |
607 | close(ldi->ldinfo_fd); | |
41abdfbd | 608 | |
1eeba686 | 609 | ++got_one; |
41abdfbd | 610 | |
1eeba686 PB |
611 | /* found a corresponding VMAP. remap! */ |
612 | ostart = vp->tstart; | |
41abdfbd | 613 | |
359a097f JK |
614 | /* We can assume pointer == CORE_ADDR, this code is native only. */ |
615 | vp->tstart = (CORE_ADDR) ldi->ldinfo_textorg; | |
1eeba686 | 616 | vp->tend = vp->tstart + ldi->ldinfo_textsize; |
359a097f | 617 | vp->dstart = (CORE_ADDR) ldi->ldinfo_dataorg; |
1eeba686 | 618 | vp->dend = vp->dstart + ldi->ldinfo_datasize; |
41abdfbd | 619 | |
1eeba686 PB |
620 | if (vp->tadj) { |
621 | vp->tstart += vp->tadj; | |
622 | vp->tend += vp->tadj; | |
623 | } | |
624 | ||
625 | /* relocate symbol table(s). */ | |
3c02636b | 626 | vmap_symtab (vp); |
41abdfbd | 627 | |
1eeba686 | 628 | /* there may be more, so we don't break out of the loop. */ |
41abdfbd JG |
629 | } |
630 | ||
1eeba686 PB |
631 | /* if there was no matching *vp, we must perforce create the sucker(s) */ |
632 | if (!got_one && !retried) { | |
633 | add_vmap(ldi); | |
634 | ++retried; | |
635 | goto retry; | |
41abdfbd JG |
636 | } |
637 | } while (ldi->ldinfo_next | |
638 | && (ldi = (void *) (ldi->ldinfo_next + (char *) ldi))); | |
639 | ||
41abdfbd JG |
640 | } |
641 | ||
642 | /* | |
643 | * vmap_inferior - print VMAP info for inferior | |
644 | */ | |
645 | vmap_inferior() { | |
646 | ||
647 | if (inferior_pid == 0) | |
507e4004 | 648 | return 0; /* normal processing */ |
41abdfbd JG |
649 | |
650 | exec_files_info(); | |
41abdfbd JG |
651 | return 1; |
652 | } | |
653 | ||
654 | /* Read or write the exec file. | |
655 | ||
656 | Args are address within exec file, address within gdb address-space, | |
657 | length, and a flag indicating whether to read or write. | |
658 | ||
659 | Result is a length: | |
660 | ||
661 | 0: We cannot handle this address and length. | |
662 | > 0: We have handled N bytes starting at this address. | |
663 | (If N == length, we did it all.) We might be able | |
664 | to handle more bytes beyond this length, but no | |
665 | promises. | |
666 | < 0: We cannot handle this address, but if somebody | |
667 | else handles (-N) bytes, we can start from there. | |
668 | ||
669 | The same routine is used to handle both core and exec files; | |
670 | we just tail-call it with more arguments to select between them. */ | |
671 | ||
672 | int | |
818de002 | 673 | xfer_memory (memaddr, myaddr, len, write, target) |
41abdfbd JG |
674 | CORE_ADDR memaddr; |
675 | char *myaddr; | |
676 | int len; | |
677 | int write; | |
818de002 | 678 | struct target_ops *target; |
41abdfbd JG |
679 | { |
680 | boolean res; | |
681 | struct section_table *p; | |
682 | CORE_ADDR nextsectaddr, memend; | |
818de002 | 683 | boolean (*xfer_fn) PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); |
41abdfbd JG |
684 | |
685 | if (len <= 0) | |
0848ad1c | 686 | fatal ("aborting"); |
41abdfbd JG |
687 | |
688 | memend = memaddr + len; | |
689 | xfer_fn = write? bfd_set_section_contents: bfd_get_section_contents; | |
690 | nextsectaddr = memend; | |
691 | ||
818de002 | 692 | for (p = target->to_sections; p < target->to_sections_end; p++) |
41abdfbd JG |
693 | { |
694 | if (p->addr <= memaddr) | |
695 | if (p->endaddr >= memend) | |
696 | { | |
697 | /* Entire transfer is within this section. */ | |
818de002 | 698 | res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len); |
41abdfbd JG |
699 | return (res != false)? len: 0; |
700 | } | |
701 | else if (p->endaddr <= memaddr) | |
702 | { | |
703 | /* This section ends before the transfer starts. */ | |
704 | continue; | |
705 | } | |
706 | else | |
707 | { | |
708 | /* This section overlaps the transfer. Just do half. */ | |
709 | len = p->endaddr - memaddr; | |
818de002 | 710 | res = xfer_fn (p->bfd, p->sec_ptr, myaddr, memaddr - p->addr, len); |
41abdfbd JG |
711 | return (res != false)? len: 0; |
712 | } | |
713 | else if (p->addr < nextsectaddr) | |
714 | nextsectaddr = p->addr; | |
715 | } | |
716 | ||
717 | if (nextsectaddr >= memend) | |
718 | return 0; /* We can't help */ | |
719 | else | |
720 | return - (nextsectaddr - memaddr); /* Next boundary where we can help */ | |
721 | } | |
722 | ||
818de002 PB |
723 | void |
724 | print_section_info (t, abfd) | |
725 | struct target_ops *t; | |
726 | bfd *abfd; | |
41abdfbd | 727 | { |
818de002 | 728 | struct section_table *p; |
41abdfbd | 729 | |
818de002 PB |
730 | printf_filtered ("\t`%s', ", bfd_get_filename(abfd)); |
731 | wrap_here (" "); | |
732 | printf_filtered ("file type %s.\n", bfd_get_target(abfd)); | |
733 | ||
734 | for (p = t->to_sections; p < t->to_sections_end; p++) { | |
735 | printf_filtered ("\t%s", local_hex_string_custom (p->addr, "08")); | |
736 | printf_filtered (" - %s", local_hex_string_custom (p->endaddr, "08")); | |
737 | if (info_verbose) | |
738 | printf_filtered (" @ %s", | |
739 | local_hex_string_custom (p->sec_ptr->filepos, "08")); | |
740 | printf_filtered (" is %s", bfd_section_name (p->bfd, p->sec_ptr)); | |
741 | if (p->bfd != abfd) { | |
742 | printf_filtered (" in %s", bfd_get_filename (p->bfd)); | |
743 | } | |
744 | printf_filtered ("\n"); | |
745 | } | |
818de002 PB |
746 | } |
747 | ||
507e4004 | 748 | |
818de002 PB |
749 | static void |
750 | exec_files_info (t) | |
751 | struct target_ops *t; | |
752 | { | |
507e4004 PB |
753 | register struct vmap *vp = vmap; |
754 | ||
818de002 | 755 | print_section_info (t, exec_bfd); |
507e4004 PB |
756 | |
757 | if (!vp) | |
758 | return; | |
759 | ||
1eeba686 PB |
760 | printf("\tMapping info for file `%s'.\n", vp->name); |
761 | ||
762 | printf("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n", | |
763 | "tstart", "tend", "dstart", "dend", "section", "file(member)"); | |
507e4004 PB |
764 | |
765 | for (; vp; vp = vp->nxt) | |
1eeba686 PB |
766 | printf("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n", |
767 | vp->tstart, | |
768 | vp->tend, | |
769 | vp->dstart, | |
770 | vp->dend, | |
771 | vp->name, | |
772 | *vp->member ? "(" : "", | |
773 | vp->member, | |
774 | *vp->member ? ")" : ""); | |
41abdfbd JG |
775 | } |
776 | ||
777 | #ifdef DAMON | |
76b28d05 | 778 | /* Damon's implementation of set_section_command! It is based on the sex member |
41abdfbd JG |
779 | (which is a section pointer from vmap) of vmap. |
780 | We will not have multiple vmap entries (one for each section), rather transmit | |
781 | text and data base offsets and fix them at the same time. Elimination of sex | |
782 | entry in vmap make this function obsolute, use the one from exec.c. | |
76b28d05 | 783 | Need further testing!! FIXMEmgo. */ |
41abdfbd JG |
784 | |
785 | static void | |
786 | set_section_command(args, from_tty) | |
787 | char *args; | |
788 | { | |
789 | register struct vmap *vp = vmap; | |
790 | char *secname; | |
791 | unsigned seclen; | |
792 | unsigned long secaddr; | |
793 | char secprint[100]; | |
794 | long offset; | |
795 | ||
796 | if (args == 0) | |
797 | error("Must specify section name and its virtual address"); | |
798 | ||
799 | /* Parse out section name */ | |
800 | for (secname = args; !isspace(*args); args++) | |
801 | ; | |
802 | seclen = args - secname; | |
803 | ||
804 | /* Parse out new virtual address */ | |
805 | secaddr = parse_and_eval_address(args); | |
806 | ||
807 | for (vp = vmap; vp; vp = vp->nxt) { | |
808 | if (!strncmp(secname | |
809 | , bfd_section_name(vp->bfd, vp->sex), seclen) | |
810 | && bfd_section_name(vp->bfd, vp->sex)[seclen] == '\0') { | |
811 | offset = secaddr - vp->tstart; | |
812 | vp->tstart += offset; | |
813 | vp->tend += offset; | |
814 | exec_files_info(); | |
815 | return; | |
816 | } | |
817 | } | |
818 | ||
819 | if (seclen >= sizeof(secprint)) | |
820 | seclen = sizeof(secprint) - 1; | |
821 | strncpy(secprint, secname, seclen); | |
822 | secprint[seclen] = '\0'; | |
823 | error("Section %s not found", secprint); | |
824 | } | |
825 | #else | |
826 | static void | |
827 | set_section_command (args, from_tty) | |
828 | char *args; | |
829 | int from_tty; | |
830 | { | |
831 | struct section_table *p; | |
832 | char *secname; | |
833 | unsigned seclen; | |
834 | unsigned long secaddr; | |
835 | char secprint[100]; | |
836 | long offset; | |
837 | ||
838 | if (args == 0) | |
839 | error ("Must specify section name and its virtual address"); | |
840 | ||
841 | /* Parse out section name */ | |
842 | for (secname = args; !isspace(*args); args++) ; | |
843 | seclen = args - secname; | |
844 | ||
845 | /* Parse out new virtual address */ | |
846 | secaddr = parse_and_eval_address (args); | |
847 | ||
507e4004 | 848 | for (p = exec_ops.to_sections; p < exec_ops.to_sections_end; p++) { |
41abdfbd JG |
849 | if (!strncmp (secname, bfd_section_name (exec_bfd, p->sec_ptr), seclen) |
850 | && bfd_section_name (exec_bfd, p->sec_ptr)[seclen] == '\0') { | |
851 | offset = secaddr - p->addr; | |
852 | p->addr += offset; | |
853 | p->endaddr += offset; | |
507e4004 PB |
854 | if (from_tty) |
855 | exec_files_info(&exec_ops); | |
41abdfbd JG |
856 | return; |
857 | } | |
858 | } | |
859 | if (seclen >= sizeof (secprint)) | |
860 | seclen = sizeof (secprint) - 1; | |
861 | strncpy (secprint, secname, seclen); | |
862 | secprint[seclen] = '\0'; | |
863 | error ("Section %s not found", secprint); | |
864 | } | |
865 | ||
866 | #endif /* !DAMON */ | |
867 | ||
868 | struct target_ops exec_ops = { | |
869 | "exec", "Local exec file", | |
870 | "Use an executable file as a target.\n\ | |
871 | Specify the filename of the executable file.", | |
872 | exec_file_command, exec_close, /* open, close */ | |
050d45c5 | 873 | find_default_attach, 0, 0, 0, /* attach, detach, resume, wait, */ |
41abdfbd | 874 | 0, 0, /* fetch_registers, store_registers, */ |
a03d4f8e | 875 | 0, /* prepare_to_store */ |
818de002 | 876 | xfer_memory, exec_files_info, |
41abdfbd JG |
877 | 0, 0, /* insert_breakpoint, remove_breakpoint, */ |
878 | 0, 0, 0, 0, 0, /* terminal stuff */ | |
879 | 0, 0, /* kill, load */ | |
e17960fb | 880 | 0, /* lookup sym */ |
050d45c5 | 881 | find_default_create_inferior, |
41abdfbd | 882 | 0, /* mourn_inferior */ |
5ee4e16c | 883 | 0, /* can_run */ |
3950a34e | 884 | 0, /* notice_signals */ |
41abdfbd JG |
885 | file_stratum, 0, /* next */ |
886 | 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */ | |
887 | 0, 0, /* section pointers */ | |
888 | OPS_MAGIC, /* Always the last thing */ | |
889 | }; | |
2aefe6e4 JK |
890 | \f |
891 | /* Core file stuff. */ | |
892 | ||
893 | /* Relocate symtabs and read in shared library info, based on symbols | |
894 | from the core file. */ | |
895 | void | |
896 | xcoff_relocate_core () | |
897 | { | |
898 | /* Offset of member MEMBER in a struct of type TYPE. */ | |
899 | #ifndef offsetof | |
900 | #define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER) | |
901 | #endif | |
902 | ||
903 | /* Size of a struct ld_info except for the variable-length filename. */ | |
904 | #define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename)) | |
905 | ||
906 | sec_ptr ldinfo_sec; | |
907 | int offset = 0; | |
908 | struct ld_info *ldip; | |
909 | struct vmap *vp; | |
4cdcf3b9 | 910 | |
2aefe6e4 JK |
911 | /* Allocated size of buffer. */ |
912 | int buffer_size = LDINFO_SIZE; | |
913 | char *buffer = xmalloc (buffer_size); | |
914 | struct cleanup *old = make_cleanup (free_current_contents, &buffer); | |
915 | ||
4cdcf3b9 JK |
916 | /* FIXME, this restriction should not exist. For now, though I'll |
917 | avoid coredumps with error() pending a real fix. */ | |
918 | if (vmap == NULL) | |
919 | error | |
920 | ("Can't debug a core file without an executable file (on the RS/6000)"); | |
921 | ||
2aefe6e4 JK |
922 | ldinfo_sec = bfd_get_section_by_name (core_bfd, ".ldinfo"); |
923 | if (ldinfo_sec == NULL) | |
924 | { | |
925 | bfd_err: | |
926 | fprintf_filtered (stderr, "Couldn't get ldinfo from core file: %s\n", | |
927 | bfd_errmsg (bfd_error)); | |
928 | do_cleanups (old); | |
929 | return; | |
930 | } | |
931 | do | |
932 | { | |
933 | int i; | |
934 | int names_found = 0; | |
935 | ||
936 | /* Read in everything but the name. */ | |
937 | if (bfd_get_section_contents (core_bfd, ldinfo_sec, buffer, | |
938 | offset, LDINFO_SIZE) == 0) | |
939 | goto bfd_err; | |
940 | ||
941 | /* Now the name. */ | |
942 | i = LDINFO_SIZE; | |
943 | do | |
944 | { | |
945 | if (i == buffer_size) | |
946 | { | |
947 | buffer_size *= 2; | |
948 | buffer = xrealloc (buffer, buffer_size); | |
949 | } | |
950 | if (bfd_get_section_contents (core_bfd, ldinfo_sec, &buffer[i], | |
951 | offset + i, 1) == 0) | |
952 | goto bfd_err; | |
953 | if (buffer[i++] == '\0') | |
954 | ++names_found; | |
955 | } while (names_found < 2); | |
956 | ||
957 | ldip = (struct ld_info *)buffer; | |
958 | ||
959 | /* Can't use a file descriptor from the core file; need to open it. */ | |
960 | ldip->ldinfo_fd = -1; | |
961 | ||
962 | /* The first ldinfo is for the exec file, allocated elsewhere. */ | |
963 | if (offset == 0) | |
964 | vp = vmap; | |
965 | else | |
966 | vp = add_vmap (ldip); | |
967 | ||
968 | offset += ldip->ldinfo_next; | |
41abdfbd | 969 | |
359a097f JK |
970 | /* We can assume pointer == CORE_ADDR, this code is native only. */ |
971 | vp->tstart = (CORE_ADDR) ldip->ldinfo_textorg; | |
2aefe6e4 | 972 | vp->tend = vp->tstart + ldip->ldinfo_textsize; |
359a097f | 973 | vp->dstart = (CORE_ADDR) ldip->ldinfo_dataorg; |
2aefe6e4 JK |
974 | vp->dend = vp->dstart + ldip->ldinfo_datasize; |
975 | ||
976 | if (vp->tadj != 0) { | |
977 | vp->tstart += vp->tadj; | |
978 | vp->tend += vp->tadj; | |
979 | } | |
980 | ||
981 | /* Unless this is the exec file, | |
982 | add our sections to the section table for the core target. */ | |
983 | if (vp != vmap) | |
984 | { | |
985 | int count; | |
986 | struct section_table *stp; | |
987 | ||
988 | count = core_ops.to_sections_end - core_ops.to_sections; | |
989 | count += 2; | |
990 | core_ops.to_sections = (struct section_table *) | |
991 | xrealloc (core_ops.to_sections, | |
992 | sizeof (struct section_table) * count); | |
993 | core_ops.to_sections_end = core_ops.to_sections + count; | |
994 | stp = core_ops.to_sections_end - 2; | |
995 | ||
996 | /* "Why do we add bfd_section_vma?", I hear you cry. | |
997 | Well, the start of the section in the file is actually | |
998 | that far into the section as the struct vmap understands it. | |
999 | So for text sections, bfd_section_vma tends to be 0x200, | |
1000 | and if vp->tstart is 0xd0002000, then the first byte of | |
1001 | the text section on disk corresponds to address 0xd0002200. */ | |
1002 | stp->bfd = vp->bfd; | |
1003 | stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".text"); | |
1004 | stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tstart; | |
1005 | stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->tend; | |
1006 | stp++; | |
1007 | ||
1008 | stp->bfd = vp->bfd; | |
1009 | stp->sec_ptr = bfd_get_section_by_name (stp->bfd, ".data"); | |
1010 | stp->addr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dstart; | |
1011 | stp->endaddr = bfd_section_vma (stp->bfd, stp->sec_ptr) + vp->dend; | |
1012 | } | |
1013 | ||
3c02636b | 1014 | vmap_symtab (vp); |
2aefe6e4 | 1015 | |
359a097f JK |
1016 | add_text_to_loadinfo ((CORE_ADDR)ldip->ldinfo_textorg, |
1017 | (CORE_ADDR)ldip->ldinfo_dataorg); | |
2aefe6e4 JK |
1018 | } while (ldip->ldinfo_next != 0); |
1019 | vmap_exec (); | |
1020 | do_cleanups (old); | |
1021 | } | |
41abdfbd JG |
1022 | |
1023 | void | |
1024 | _initialize_exec() | |
1025 | { | |
1026 | ||
1027 | add_com("file", class_files, file_command, | |
1028 | "Use FILE as program to be debugged.\n\ | |
1029 | It is read for its symbols, for getting the contents of pure memory,\n\ | |
1030 | and it is the program executed when you use the `run' command.\n\ | |
1031 | If FILE cannot be found as specified, your execution directory path\n\ | |
1032 | ($PATH) is searched for a command of that name.\n\ | |
1033 | No arg means to have no executable file and no symbols."); | |
1034 | ||
1035 | add_com("exec-file", class_files, exec_file_command, | |
1036 | "Use FILE as program for getting contents of pure memory.\n\ | |
1037 | If FILE cannot be found as specified, your execution directory path\n\ | |
1038 | is searched for a command of that name.\n\ | |
1039 | No arg means have no executable file."); | |
1040 | ||
1041 | add_com("section", class_files, set_section_command, | |
1042 | "Change the base address of section SECTION of the exec file to ADDR.\n\ | |
1043 | This can be used if the exec file does not contain section addresses,\n\ | |
1044 | (such as in the a.out format), or when the addresses specified in the\n\ | |
1045 | file itself are wrong. Each section must be changed separately. The\n\ | |
1046 | ``info files'' command lists all the sections and their addresses."); | |
1047 | ||
1048 | add_target(&exec_ops); | |
1049 | } |