1 /* Execute AIXcoff files, for GDB.
2 Copyright 1988, 1989, 1991, 1992 Free Software Foundation, Inc.
3 Derived from exec.c. Modified by IBM Corporation.
4 Donated by IBM Corporation and Cygnus Support.
6 This file is part of GDB.
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.
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.
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. */
22 /* xcoff-exec - deal with executing XCOFF files. */
26 #include <sys/types.h>
27 #include <sys/param.h>
42 #include "libbfd.h" /* BFD internals (sigh!) FIXME */
44 #include "xcoffsolib.h"
46 /* Prototypes for local functions */
49 file_command
PARAMS ((char *, int));
52 exec_close
PARAMS ((int));
55 map_vmap
PARAMS ((bfd
*, bfd
*));
57 struct section_table
*exec_sections
, *exec_sections_end
;
59 /* Whether to open exec and core files read-only or read-write. */
63 extern int info_verbose
;
65 bfd
*exec_bfd
; /* needed by core.c */
67 extern char *getenv();
68 extern void add_syms_addr_command ();
69 extern void symbol_file_command ();
70 static void exec_files_info();
72 struct vmap
*vmap
; /* current vmap */
74 extern struct target_ops exec_ops
;
77 /* exec_close - done with exec file, clean up all resources. */
82 register struct vmap
*vp
, *nxt
;
85 for (nxt
= vmap
; vp
= nxt
; )
89 /* if there is an objfile associated with this bfd,
90 free_objfile() will do proper cleanup of objfile *and* bfd. */
93 free_objfile (vp
->objfile
);
97 /* FIXME: This routine is #if 0'd in symfile.c. What should we
98 be doing here? Should we just free everything in
99 vp->objfile->symtabs? Should free_objfile do that? */
100 free_named_symtabs(vp
->name
);
107 bfd_close (exec_bfd
);
110 if (exec_ops
.to_sections
) {
111 free (exec_ops
.to_sections
);
112 exec_ops
.to_sections
= NULL
;
113 exec_ops
.to_sections_end
= NULL
;
118 * exec_file_command - handle the "exec" command, &c.
121 exec_file_command(filename
, from_tty
)
124 target_preopen(from_tty
);
126 /* Remove any previous exec file. */
127 unpush_target(&exec_ops
);
129 /* Now open and digest the file the user requested, if any. */
132 char *scratch_pathname
;
135 filename
= tilde_expand(filename
);
136 make_cleanup (free
, filename
);
138 scratch_chan
= openp(getenv("PATH"), 1, filename
,
139 write_files
? O_RDWR
: O_RDONLY
, 0,
141 if (scratch_chan
< 0)
142 perror_with_name(filename
);
144 exec_bfd
= bfd_fdopenr(scratch_pathname
, NULL
, scratch_chan
);
146 error("Could not open `%s' as an executable file: %s"
147 , scratch_pathname
, bfd_errmsg(bfd_error
));
149 /* make sure we have an object file */
151 if (!bfd_check_format(exec_bfd
, bfd_object
))
152 error("\"%s\": not in executable format: %s.",
153 scratch_pathname
, bfd_errmsg(bfd_error
));
156 /* setup initial vmap */
158 map_vmap (exec_bfd
, 0);
160 error("Can't find the file sections in `%s': %s",
161 exec_bfd
->filename
, bfd_errmsg(bfd_error
));
163 if (build_section_table (exec_bfd
, &exec_ops
.to_sections
,
164 &exec_ops
.to_sections_end
))
165 error ("Can't find the file sections in `%s': %s",
166 exec_bfd
->filename
, bfd_errmsg (bfd_error
));
168 /* make sure core, if present, matches */
171 push_target(&exec_ops
);
173 /* Tell display code(if any) about the changed file name. */
175 if (exec_file_display_hook
)
176 (*exec_file_display_hook
)(filename
);
179 exec_close(0); /* just in case */
181 printf("No exec file now.\n");
185 /* Set both the exec file and the symbol file, in one command. What a
186 * novelty. Why did GDB go through four major releases before this
190 file_command(arg
, from_tty
)
193 exec_file_command(arg
, from_tty
);
194 symbol_file_command(arg
, from_tty
);
197 /* Locate all mappable sections of a BFD file.
198 table_pp_char is a char * to get it through bfd_map_over_sections;
199 we cast it back to its proper type. */
202 add_to_section_table (abfd
, asect
, table_pp_char
)
207 struct section_table
**table_pp
= (struct section_table
**)table_pp_char
;
210 aflag
= bfd_get_section_flags (abfd
, asect
);
211 /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */
212 if (!(aflag
& SEC_LOAD
))
214 if (0 == bfd_section_size (abfd
, asect
))
216 (*table_pp
)->bfd
= abfd
;
217 (*table_pp
)->sec_ptr
= asect
;
218 (*table_pp
)->addr
= bfd_section_vma (abfd
, asect
);
219 (*table_pp
)->endaddr
= (*table_pp
)->addr
+ bfd_section_size (abfd
, asect
);
224 build_section_table (some_bfd
, start
, end
)
226 struct section_table
**start
, **end
;
230 count
= bfd_count_sections (some_bfd
);
232 abort(); /* return 1? */
235 *start
= (struct section_table
*) xmalloc (count
* sizeof (**start
));
237 bfd_map_over_sections (some_bfd
, add_to_section_table
, (char *)end
);
238 if (*end
> *start
+ count
)
240 /* We could realloc the table, but it probably loses for most files. */
245 sex_to_vmap(bfd
*bf
, sec_ptr sex
, struct vmap_and_bfd
*vmap_bfd
)
247 register struct vmap
*vp
, **vpp
;
248 register struct symtab
*syms
;
249 bfd
*arch
= vmap_bfd
->pbfd
;
250 vp
= vmap_bfd
->pvmap
;
252 if ((bfd_get_section_flags(bf
, sex
) & SEC_LOAD
) == 0)
255 if (STREQ(bfd_section_name(bf
, sex
), ".text")) {
257 vp
->tend
= vp
->tstart
+ bfd_section_size(bf
, sex
);
259 /* When it comes to this adjustment value, in contrast to our previous
260 belief shared objects should behave the same as the main load segment.
261 This is the offset from the beginning of text section to the first
264 vp
->tadj
= sex
->filepos
- bfd_section_vma(bf
, sex
);
267 else if (STREQ(bfd_section_name(bf
, sex
), ".data")) {
269 vp
->dend
= vp
->dstart
+ bfd_section_size(bf
, sex
);
272 else if (STREQ(bfd_section_name(bf
, sex
), ".bss")) /* FIXMEmgo */
273 printf ("bss section in exec! Don't know what the heck to do!\n");
276 /* Make a vmap for the BFD "bf", which might be a member of the archive
277 BFD "arch". Return the new vmap. */
279 map_vmap (bfd
*bf
, bfd
*arch
)
281 struct vmap_and_bfd vmap_bfd
;
282 struct vmap
*vp
, **vpp
;
285 vp
= (void*) xmalloc (sizeof (*vp
));
286 bzero (vp
, sizeof (*vp
));
289 vp
->name
= bfd_get_filename(arch
? arch
: bf
);
290 vp
->member
= arch
? bfd_get_filename(bf
) : "";
292 vmap_bfd
.pbfd
= arch
;
294 bfd_map_over_sections (bf
, sex_to_vmap
, &vmap_bfd
);
296 /* find the end of the list, and append. */
297 for (vpp
= &vmap
; *vpp
; vpp
= &(*vpp
)->nxt
)
305 /* true, if symbol table and minimal symbol table are relocated. */
307 int symtab_relocated
= 0;
310 /* vmap_symtab - handle symbol translation on vmapping */
312 vmap_symtab(vp
, old_start
, vip
)
313 register struct vmap
*vp
;
317 register struct symtab
*s
;
318 register struct objfile
*objfile
;
319 register struct minimal_symbol
*msymbol
;
321 objfile
= vp
->objfile
;
324 /* OK, it's not an objfile we opened ourselves.
325 Currently, that can only happen with the exec file, so
326 relocate the symbols for the symfile. */
327 if (symfile_objfile
== NULL
)
329 objfile
= symfile_objfile
;
332 s
= objfile
->symtabs
;
334 if (vp
->tstart
!= old_start
) {
336 /* Once we find a relocation base address for one of the symtabs
337 in this objfile, it will be the same for all symtabs in this
338 objfile. Clean this algorithm. FIXME. */
340 for (; s
; s
= s
->next
)
341 if (!s
->nonreloc
|| LINETABLE(s
))
342 vmap_symtab_1(s
, vp
, old_start
);
345 /* I believe trampoline entries now have a name like
346 <trampoline>. In any event, if something needs to be changed,
347 it should be changed in ALL_MSYMBOLS, so it works everywhere. */
349 Himm.., recently we nullified trampoline entry names in order not
350 to confuse them with real symbols. Appearently this turned into a
351 problem, and msymbol vector did not get relocated properly. If
352 msymbols have to have non-null names, then we should name
353 trampoline entries with empty strings. */
355 ALL_MSYMBOLS (objfile
, msymbol
)
357 for (msymbol
= objfile
->msymbols
;
358 SYMBOL_NAME (msymbol
) || SYMBOL_VALUE_ADDRESS (msymbol
);
361 if (SYMBOL_VALUE_ADDRESS (msymbol
) < TEXT_SEGMENT_BASE
)
362 SYMBOL_VALUE_ADDRESS (msymbol
) += vp
->tstart
- old_start
;
366 if (vp
->tstart
!= old_start
) {
367 /* breakpoints need to be relocated as well. */
368 fixup_breakpoints (0, TEXT_SEGMENT_BASE
, vp
->tstart
- old_start
);
371 symtab_relocated
= 1;
375 vmap_symtab_1(s
, vp
, old_start
)
376 register struct symtab
*s
;
377 register struct vmap
*vp
;
382 register struct linetable
*l
;
383 struct blockvector
*bv
;
384 register struct block
*b
;
386 register ulong reloc
, dreloc
;
388 if ((reloc
= vp
->tstart
- old_start
) == 0)
391 dreloc
= vp
->dstart
; /* data relocation */
394 * The line table must be relocated. This is only present for
395 * .text sections, so only vp->text type maps need be considered.
400 for (i
= 0; i
< len
; i
++)
401 l
->item
[i
].pc
+= reloc
;
404 /* if this symbol table is not relocatable, only line table should
405 be relocated and the rest ignored. */
410 len
= BLOCKVECTOR_NBLOCKS(bv
);
412 for (i
= 0; i
< len
; i
++) {
413 b
= BLOCKVECTOR_BLOCK(bv
, i
);
415 BLOCK_START(b
) += reloc
;
416 BLOCK_END(b
) += reloc
;
418 blen
= BLOCK_NSYMS(b
);
419 for (j
= 0; j
< blen
; j
++) {
420 register struct symbol
*sym
;
422 sym
= BLOCK_SYM(b
, j
);
423 switch (SYMBOL_NAMESPACE(sym
)) {
424 case STRUCT_NAMESPACE
:
425 case UNDEF_NAMESPACE
:
428 case LABEL_NAMESPACE
:
433 switch (SYMBOL_CLASS(sym
)) {
435 case LOC_CONST_BYTES
:
449 SYMBOL_VALUE_ADDRESS(sym
) += reloc
;
453 SYMBOL_VALUE_ADDRESS(sym
) += dreloc
;
460 fatal("botched symbol class %x"
461 , SYMBOL_CLASS(sym
));
468 /* Add symbols for an objfile. */
470 objfile_symbol_add (arg
)
473 struct objfile
*obj
= (struct objfile
*) arg
;
474 syms_from_objfile (obj
, 0, 0, 0);
475 new_symfile_objfile (obj
, 0, 0);
479 static struct vmap
*add_vmap
PARAMS ((struct ld_info
*));
481 /* Add a new vmap entry based on ldinfo() information.
483 If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
484 core file), the caller should set it to -1, and we will open the file.
486 Return the vmap new entry. */
489 register struct ld_info
*ldi
;
492 register char *mem
, *objname
;
496 /* This ldi structure was allocated using alloca() in
497 xcoff_relocate_symtab(). Now we need to have persistent object
498 and member names, so we should save them. */
500 mem
= ldi
->ldinfo_filename
+ strlen(ldi
->ldinfo_filename
) + 1;
501 mem
= savestring (mem
, strlen (mem
));
502 objname
= savestring (ldi
->ldinfo_filename
, strlen (ldi
->ldinfo_filename
));
504 if (ldi
->ldinfo_fd
< 0)
505 /* Note that this opens it once for every member; a possible
506 enhancement would be to only open it once for every object. */
507 bfd
= bfd_openr (objname
, NULL
);
509 bfd
= bfd_fdopenr(objname
, NULL
, ldi
->ldinfo_fd
);
511 error("Could not open `%s' as an executable file: %s",
512 objname
, bfd_errmsg(bfd_error
));
515 /* make sure we have an object file */
517 if (bfd_check_format(bfd
, bfd_object
))
518 vp
= map_vmap (bfd
, 0);
520 else if (bfd_check_format(bfd
, bfd_archive
)) {
523 * FIXME??? am I tossing BFDs? bfd?
525 while (last
= bfd_openr_next_archived_file(bfd
, last
))
526 if (STREQ(mem
, last
->filename
))
531 /* FIXME -- should be error */
532 warning("\"%s\": member \"%s\" missing.", bfd
->filename
, mem
);
536 if (!bfd_check_format(last
, bfd_object
)) {
537 bfd_close(last
); /* XXX??? */
541 vp
= map_vmap (last
, bfd
);
546 error ("\"%s\": not in executable format: %s.",
547 objname
, bfd_errmsg(bfd_error
));
550 obj
= allocate_objfile (vp
->bfd
, 0);
553 #ifndef SOLIB_SYMBOLS_MANUAL
554 if (catch_errors (objfile_symbol_add
, (char *)obj
,
555 "Error while reading shared library symbols:\n"))
557 /* Note this is only done if symbol reading was successful. */
558 vmap_symtab (vp
, 0, 0);
566 /* As well as symbol tables, exec_sections need relocation. After
567 the inferior process' termination, there will be a relocated symbol
568 table exist with no corresponding inferior process. At that time, we
569 need to use `exec' bfd, rather than the inferior process's memory space
572 `exec_sections' need to be relocated only once, as long as the exec
573 file remains unchanged.
580 if (execbfd
== exec_bfd
)
585 if (!vmap
|| !exec_ops
.to_sections
)
586 error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
588 for (i
=0; &exec_ops
.to_sections
[i
] < exec_ops
.to_sections_end
; i
++)
590 if (STREQ(".text", exec_ops
.to_sections
[i
].sec_ptr
->name
))
592 exec_ops
.to_sections
[i
].addr
+= vmap
->tstart
;
593 exec_ops
.to_sections
[i
].endaddr
+= vmap
->tstart
;
595 else if (STREQ(".data", exec_ops
.to_sections
[i
].sec_ptr
->name
))
597 exec_ops
.to_sections
[i
].addr
+= vmap
->dstart
;
598 exec_ops
.to_sections
[i
].endaddr
+= vmap
->dstart
;
604 /* This was for the old, half-assed, core file support. */
606 text_adjustment (abfd
)
610 static int adjustment
;
613 if (exec_bfd
== execbfd
)
616 sect
= bfd_get_section_by_name (abfd
, ".text");
618 adjustment
= sect
->filepos
- sect
->vma
;
620 adjustment
= 0x200; /* just a wild assumption */
627 * vmap_ldinfo - update VMAP info with ldinfo() information
630 * ldi - ^ to ldinfo() results.
633 register struct ld_info
*ldi
;
636 register struct vmap
*vp
;
637 register got_one
, retried
;
641 * for each *ldi, see if we have a corresponding *vp
642 * if so, update the mapping, and symbol table.
643 * if not, add an entry and symbol table.
646 char *name
= ldi
->ldinfo_filename
;
647 char *memb
= name
+ strlen(name
) + 1;
651 if (fstat(ldi
->ldinfo_fd
, &ii
) < 0)
652 fatal("cannot fstat(%d) on %s"
656 for (got_one
= 0, vp
= vmap
; vp
; vp
= vp
->nxt
) {
659 /* First try to find a `vp', which is the same as in ldinfo.
660 If not the same, just continue and grep the next `vp'. If same,
661 relocate its tstart, tend, dstart, dend values. If no such `vp'
662 found, get out of this for loop, add this ldi entry as a new vmap
663 (add_vmap) and come back, fins its `vp' and so on... */
665 /* The filenames are not always sufficient to match on. */
667 if ((name
[0] == '/' && !STREQ(name
, vp
->name
))
668 || (memb
[0] && !STREQ(memb
, vp
->member
)))
671 io
= bfd_cache_lookup(vp
->bfd
); /* totally opaque! */
673 fatal("cannot find BFD's iostream for %s", vp
->name
);
675 /* see if we are referring to the same file */
677 if (fstat(fileno(io
), &vi
) < 0)
678 fatal("cannot fstat BFD for %s", vp
->name
);
680 if (ii
.st_dev
!= vi
.st_dev
|| ii
.st_ino
!= vi
.st_ino
)
684 close(ldi
->ldinfo_fd
);
688 /* found a corresponding VMAP. remap! */
691 vp
->tstart
= ldi
->ldinfo_textorg
;
692 vp
->tend
= vp
->tstart
+ ldi
->ldinfo_textsize
;
693 vp
->dstart
= ldi
->ldinfo_dataorg
;
694 vp
->dend
= vp
->dstart
+ ldi
->ldinfo_datasize
;
697 vp
->tstart
+= vp
->tadj
;
698 vp
->tend
+= vp
->tadj
;
701 /* relocate symbol table(s). */
702 vmap_symtab(vp
, ostart
, &vi
);
704 /* there may be more, so we don't break out of the loop. */
707 /* if there was no matching *vp, we must perforce create the sucker(s) */
708 if (!got_one
&& !retried
) {
713 } while (ldi
->ldinfo_next
714 && (ldi
= (void *) (ldi
->ldinfo_next
+ (char *) ldi
)));
719 * vmap_inferior - print VMAP info for inferior
723 if (inferior_pid
== 0)
724 return 0; /* normal processing */
730 /* Read or write the exec file.
732 Args are address within exec file, address within gdb address-space,
733 length, and a flag indicating whether to read or write.
737 0: We cannot handle this address and length.
738 > 0: We have handled N bytes starting at this address.
739 (If N == length, we did it all.) We might be able
740 to handle more bytes beyond this length, but no
742 < 0: We cannot handle this address, but if somebody
743 else handles (-N) bytes, we can start from there.
745 The same routine is used to handle both core and exec files;
746 we just tail-call it with more arguments to select between them. */
749 xfer_memory (memaddr
, myaddr
, len
, write
, target
)
754 struct target_ops
*target
;
757 struct section_table
*p
;
758 CORE_ADDR nextsectaddr
, memend
;
759 boolean (*xfer_fn
) PARAMS ((bfd
*, sec_ptr
, PTR
, file_ptr
, bfd_size_type
));
764 memend
= memaddr
+ len
;
765 xfer_fn
= write
? bfd_set_section_contents
: bfd_get_section_contents
;
766 nextsectaddr
= memend
;
768 for (p
= target
->to_sections
; p
< target
->to_sections_end
; p
++)
770 if (p
->addr
<= memaddr
)
771 if (p
->endaddr
>= memend
)
773 /* Entire transfer is within this section. */
774 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
775 return (res
!= false)? len
: 0;
777 else if (p
->endaddr
<= memaddr
)
779 /* This section ends before the transfer starts. */
784 /* This section overlaps the transfer. Just do half. */
785 len
= p
->endaddr
- memaddr
;
786 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
787 return (res
!= false)? len
: 0;
789 else if (p
->addr
< nextsectaddr
)
790 nextsectaddr
= p
->addr
;
793 if (nextsectaddr
>= memend
)
794 return 0; /* We can't help */
796 return - (nextsectaddr
- memaddr
); /* Next boundary where we can help */
800 print_section_info (t
, abfd
)
801 struct target_ops
*t
;
804 struct section_table
*p
;
806 printf_filtered ("\t`%s', ", bfd_get_filename(abfd
));
808 printf_filtered ("file type %s.\n", bfd_get_target(abfd
));
810 for (p
= t
->to_sections
; p
< t
->to_sections_end
; p
++) {
811 printf_filtered ("\t%s", local_hex_string_custom (p
->addr
, "08"));
812 printf_filtered (" - %s", local_hex_string_custom (p
->endaddr
, "08"));
814 printf_filtered (" @ %s",
815 local_hex_string_custom (p
->sec_ptr
->filepos
, "08"));
816 printf_filtered (" is %s", bfd_section_name (p
->bfd
, p
->sec_ptr
));
817 if (p
->bfd
!= abfd
) {
818 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
820 printf_filtered ("\n");
827 struct target_ops
*t
;
829 register struct vmap
*vp
= vmap
;
831 print_section_info (t
, exec_bfd
);
836 printf("\tMapping info for file `%s'.\n", vp
->name
);
838 printf("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
839 "tstart", "tend", "dstart", "dend", "section", "file(member)");
841 for (; vp
; vp
= vp
->nxt
)
842 printf("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n",
848 *vp
->member
? "(" : "",
850 *vp
->member
? ")" : "");
854 /* Damon's implementation of set_section_command! It is based on the sex member
855 (which is a section pointer from vmap) of vmap.
856 We will not have multiple vmap entries (one for each section), rather transmit
857 text and data base offsets and fix them at the same time. Elimination of sex
858 entry in vmap make this function obsolute, use the one from exec.c.
859 Need further testing!! FIXMEmgo. */
862 set_section_command(args
, from_tty
)
865 register struct vmap
*vp
= vmap
;
868 unsigned long secaddr
;
873 error("Must specify section name and its virtual address");
875 /* Parse out section name */
876 for (secname
= args
; !isspace(*args
); args
++)
878 seclen
= args
- secname
;
880 /* Parse out new virtual address */
881 secaddr
= parse_and_eval_address(args
);
883 for (vp
= vmap
; vp
; vp
= vp
->nxt
) {
885 , bfd_section_name(vp
->bfd
, vp
->sex
), seclen
)
886 && bfd_section_name(vp
->bfd
, vp
->sex
)[seclen
] == '\0') {
887 offset
= secaddr
- vp
->tstart
;
888 vp
->tstart
+= offset
;
895 if (seclen
>= sizeof(secprint
))
896 seclen
= sizeof(secprint
) - 1;
897 strncpy(secprint
, secname
, seclen
);
898 secprint
[seclen
] = '\0';
899 error("Section %s not found", secprint
);
903 set_section_command (args
, from_tty
)
907 struct section_table
*p
;
910 unsigned long secaddr
;
915 error ("Must specify section name and its virtual address");
917 /* Parse out section name */
918 for (secname
= args
; !isspace(*args
); args
++) ;
919 seclen
= args
- secname
;
921 /* Parse out new virtual address */
922 secaddr
= parse_and_eval_address (args
);
924 for (p
= exec_ops
.to_sections
; p
< exec_ops
.to_sections_end
; p
++) {
925 if (!strncmp (secname
, bfd_section_name (exec_bfd
, p
->sec_ptr
), seclen
)
926 && bfd_section_name (exec_bfd
, p
->sec_ptr
)[seclen
] == '\0') {
927 offset
= secaddr
- p
->addr
;
929 p
->endaddr
+= offset
;
931 exec_files_info(&exec_ops
);
935 if (seclen
>= sizeof (secprint
))
936 seclen
= sizeof (secprint
) - 1;
937 strncpy (secprint
, secname
, seclen
);
938 secprint
[seclen
] = '\0';
939 error ("Section %s not found", secprint
);
944 struct target_ops exec_ops
= {
945 "exec", "Local exec file",
946 "Use an executable file as a target.\n\
947 Specify the filename of the executable file.",
948 exec_file_command
, exec_close
, /* open, close */
949 find_default_attach
, 0, 0, 0, /* attach, detach, resume, wait, */
950 0, 0, /* fetch_registers, store_registers, */
951 0, /* prepare_to_store */
952 xfer_memory
, exec_files_info
,
953 0, 0, /* insert_breakpoint, remove_breakpoint, */
954 0, 0, 0, 0, 0, /* terminal stuff */
955 0, 0, /* kill, load */
957 find_default_create_inferior
,
958 0, /* mourn_inferior */
960 0, /* notice_signals */
961 file_stratum
, 0, /* next */
962 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
963 0, 0, /* section pointers */
964 OPS_MAGIC
, /* Always the last thing */
967 /* Core file stuff. */
969 /* Relocate symtabs and read in shared library info, based on symbols
970 from the core file. */
972 xcoff_relocate_core ()
974 /* Offset of member MEMBER in a struct of type TYPE. */
976 #define offsetof(TYPE, MEMBER) ((int) &((TYPE *)0)->MEMBER)
979 /* Size of a struct ld_info except for the variable-length filename. */
980 #define LDINFO_SIZE (offsetof (struct ld_info, ldinfo_filename))
984 struct ld_info
*ldip
;
987 /* Allocated size of buffer. */
988 int buffer_size
= LDINFO_SIZE
;
989 char *buffer
= xmalloc (buffer_size
);
990 struct cleanup
*old
= make_cleanup (free_current_contents
, &buffer
);
992 ldinfo_sec
= bfd_get_section_by_name (core_bfd
, ".ldinfo");
993 if (ldinfo_sec
== NULL
)
996 fprintf_filtered (stderr
, "Couldn't get ldinfo from core file: %s\n",
997 bfd_errmsg (bfd_error
));
1004 int names_found
= 0;
1006 /* Read in everything but the name. */
1007 if (bfd_get_section_contents (core_bfd
, ldinfo_sec
, buffer
,
1008 offset
, LDINFO_SIZE
) == 0)
1015 if (i
== buffer_size
)
1018 buffer
= xrealloc (buffer
, buffer_size
);
1020 if (bfd_get_section_contents (core_bfd
, ldinfo_sec
, &buffer
[i
],
1021 offset
+ i
, 1) == 0)
1023 if (buffer
[i
++] == '\0')
1025 } while (names_found
< 2);
1027 ldip
= (struct ld_info
*)buffer
;
1029 /* Can't use a file descriptor from the core file; need to open it. */
1030 ldip
->ldinfo_fd
= -1;
1032 /* The first ldinfo is for the exec file, allocated elsewhere. */
1036 vp
= add_vmap (ldip
);
1038 offset
+= ldip
->ldinfo_next
;
1040 vp
->tstart
= ldip
->ldinfo_textorg
;
1041 vp
->tend
= vp
->tstart
+ ldip
->ldinfo_textsize
;
1042 vp
->dstart
= ldip
->ldinfo_dataorg
;
1043 vp
->dend
= vp
->dstart
+ ldip
->ldinfo_datasize
;
1045 if (vp
->tadj
!= 0) {
1046 vp
->tstart
+= vp
->tadj
;
1047 vp
->tend
+= vp
->tadj
;
1050 /* Unless this is the exec file,
1051 add our sections to the section table for the core target. */
1055 struct section_table
*stp
;
1057 count
= core_ops
.to_sections_end
- core_ops
.to_sections
;
1059 core_ops
.to_sections
= (struct section_table
*)
1060 xrealloc (core_ops
.to_sections
,
1061 sizeof (struct section_table
) * count
);
1062 core_ops
.to_sections_end
= core_ops
.to_sections
+ count
;
1063 stp
= core_ops
.to_sections_end
- 2;
1065 /* "Why do we add bfd_section_vma?", I hear you cry.
1066 Well, the start of the section in the file is actually
1067 that far into the section as the struct vmap understands it.
1068 So for text sections, bfd_section_vma tends to be 0x200,
1069 and if vp->tstart is 0xd0002000, then the first byte of
1070 the text section on disk corresponds to address 0xd0002200. */
1072 stp
->sec_ptr
= bfd_get_section_by_name (stp
->bfd
, ".text");
1073 stp
->addr
= bfd_section_vma (stp
->bfd
, stp
->sec_ptr
) + vp
->tstart
;
1074 stp
->endaddr
= bfd_section_vma (stp
->bfd
, stp
->sec_ptr
) + vp
->tend
;
1078 stp
->sec_ptr
= bfd_get_section_by_name (stp
->bfd
, ".data");
1079 stp
->addr
= bfd_section_vma (stp
->bfd
, stp
->sec_ptr
) + vp
->dstart
;
1080 stp
->endaddr
= bfd_section_vma (stp
->bfd
, stp
->sec_ptr
) + vp
->dend
;
1083 vmap_symtab (vp
, 0, 0);
1085 add_text_to_loadinfo (ldip
->ldinfo_textorg
, ldip
->ldinfo_dataorg
);
1086 } while (ldip
->ldinfo_next
!= 0);
1095 add_com("file", class_files
, file_command
,
1096 "Use FILE as program to be debugged.\n\
1097 It is read for its symbols, for getting the contents of pure memory,\n\
1098 and it is the program executed when you use the `run' command.\n\
1099 If FILE cannot be found as specified, your execution directory path\n\
1100 ($PATH) is searched for a command of that name.\n\
1101 No arg means to have no executable file and no symbols.");
1103 add_com("exec-file", class_files
, exec_file_command
,
1104 "Use FILE as program for getting contents of pure memory.\n\
1105 If FILE cannot be found as specified, your execution directory path\n\
1106 is searched for a command of that name.\n\
1107 No arg means have no executable file.");
1109 add_com("section", class_files
, set_section_command
,
1110 "Change the base address of section SECTION of the exec file to ADDR.\n\
1111 This can be used if the exec file does not contain section addresses,\n\
1112 (such as in the a.out format), or when the addresses specified in the\n\
1113 file itself are wrong. Each section must be changed separately. The\n\
1114 ``info files'' command lists all the sections and their addresses.");
1116 add_target(&exec_ops
);