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 */
43 #include "xcoffsolib.h"
45 /* Prototypes for local functions */
48 file_command
PARAMS ((char *, int));
51 exec_close
PARAMS ((int));
53 struct section_table
*exec_sections
, *exec_sections_end
;
55 #define eq(s0, s1) !strcmp(s0, s1)
57 /* Whether to open exec and core files read-only or read-write. */
61 extern int info_verbose
;
63 bfd
*exec_bfd
; /* needed by core.c */
65 extern char *getenv();
66 extern void child_create_inferior (), child_attach ();
67 extern void add_syms_addr_command ();
68 extern void symbol_file_command ();
69 static void exec_files_info();
70 extern struct objfile
*lookup_objfile_bfd ();
74 * the vmap struct is used to describe the virtual address space of
75 * the target we are manipulating. The first entry is always the "exec"
76 * file. Subsequent entries correspond to other objects that are
77 * mapped into the address space of a process created from the "exec" file.
78 * These are either in response to exec()ing the file, in which case all
79 * shared libraries are loaded, or a "load" system call, followed by the
80 * user's issuance of a "load" command.
83 struct vmap
*nxt
; /* ^ to next in chain */
84 bfd
*bfd
; /* BFD for mappable object library */
85 char *name
; /* ^ to object file name */
86 char *member
; /* ^ to member name */
87 CORE_ADDR tstart
; /* virtual addr where member is mapped */
88 CORE_ADDR tend
; /* virtual upper bound of member */
89 CORE_ADDR tadj
; /* heuristically derived adjustment */
90 CORE_ADDR dstart
; /* virtual address of data start */
91 CORE_ADDR dend
; /* vitrual address of data end */
100 static struct vmap
*vmap
; /* current vmap */
103 struct vmap
*vmap
; /* current vmap */
105 extern struct target_ops exec_ops
;
108 /* exec_close - done with exec file, clean up all resources. */
113 register struct vmap
*vp
, *nxt
;
116 for (nxt
= vmap
; vp
= nxt
; )
120 /* if there is an objfile associated with this bfd,
121 free_objfile() will do proper cleanup of objfile *and* bfd. */
123 if (obj
= lookup_objfile_bfd (vp
->bfd
))
128 free_named_symtabs(vp
->name
);
135 bfd_close (exec_bfd
);
138 if (exec_ops
.to_sections
) {
139 free (exec_ops
.to_sections
);
140 exec_ops
.to_sections
= NULL
;
141 exec_ops
.to_sections_end
= NULL
;
146 * exec_file_command - handle the "exec" command, &c.
149 exec_file_command(filename
, from_tty
)
152 target_preopen(from_tty
);
154 /* Remove any previous exec file. */
155 unpush_target(&exec_ops
);
157 /* Now open and digest the file the user requested, if any. */
160 char *scratch_pathname
;
163 filename
= tilde_expand(filename
);
164 make_cleanup (free
, filename
);
166 scratch_chan
= openp(getenv("PATH"), 1, filename
,
167 write_files
? O_RDWR
: O_RDONLY
, 0,
169 if (scratch_chan
< 0)
170 perror_with_name(filename
);
172 exec_bfd
= bfd_fdopenr(scratch_pathname
, NULL
, scratch_chan
);
174 error("Could not open `%s' as an executable file: %s"
175 , scratch_pathname
, bfd_errmsg(bfd_error
));
177 /* make sure we have an object file */
179 if (!bfd_check_format(exec_bfd
, bfd_object
))
180 error("\"%s\": not in executable format: %s.",
181 scratch_pathname
, bfd_errmsg(bfd_error
));
184 /* setup initial vmap */
186 map_vmap (exec_bfd
, 0);
188 error("Can't find the file sections in `%s': %s",
189 exec_bfd
->filename
, bfd_errmsg(bfd_error
));
191 if (build_section_table (exec_bfd
, &exec_ops
.to_sections
,
192 &exec_ops
.to_sections_end
))
193 error ("Can't find the file sections in `%s': %s",
194 exec_bfd
->filename
, bfd_errmsg (bfd_error
));
196 /* make sure core, if present, matches */
199 push_target(&exec_ops
);
201 /* Tell display code(if any) about the changed file name. */
203 if (exec_file_display_hook
)
204 (*exec_file_display_hook
)(filename
);
207 exec_close(0); /* just in case */
209 printf("No exec file now.\n");
213 /* Set both the exec file and the symbol file, in one command. What a
214 * novelty. Why did GDB go through four major releases before this
218 file_command(arg
, from_tty
)
221 exec_file_command(arg
, from_tty
);
222 symbol_file_command(arg
, from_tty
);
225 /* Locate all mappable sections of a BFD file.
226 table_pp_char is a char * to get it through bfd_map_over_sections;
227 we cast it back to its proper type. */
230 add_to_section_table (abfd
, asect
, table_pp_char
)
235 struct section_table
**table_pp
= (struct section_table
**)table_pp_char
;
238 aflag
= bfd_get_section_flags (abfd
, asect
);
239 /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */
240 if (!(aflag
& SEC_LOAD
))
242 if (0 == bfd_section_size (abfd
, asect
))
244 (*table_pp
)->bfd
= abfd
;
245 (*table_pp
)->sec_ptr
= asect
;
246 (*table_pp
)->addr
= bfd_section_vma (abfd
, asect
);
247 (*table_pp
)->endaddr
= (*table_pp
)->addr
+ bfd_section_size (abfd
, asect
);
252 build_section_table (some_bfd
, start
, end
)
254 struct section_table
**start
, **end
;
258 count
= bfd_count_sections (some_bfd
);
260 abort(); /* return 1? */
263 *start
= (struct section_table
*) xmalloc (count
* sizeof (**start
));
265 bfd_map_over_sections (some_bfd
, add_to_section_table
, (char *)end
);
266 if (*end
> *start
+ count
)
268 /* We could realloc the table, but it probably loses for most files. */
273 * lookup_symtab_bfd - find if we currently have any symbol tables from bfd
276 lookup_objfile_bfd(bfd
*bfd
) {
277 register struct objfile
*s
;
279 for (s
= object_files
; s
; s
= s
->next
)
287 sex_to_vmap(bfd
*bf
, sec_ptr sex
, struct vmap_and_bfd
*vmap_bfd
)
289 register struct vmap
*vp
, **vpp
;
290 register struct symtab
*syms
;
291 bfd
*arch
= vmap_bfd
->pbfd
;
292 vp
= vmap_bfd
->pvmap
;
294 if ((bfd_get_section_flags(bf
, sex
) & SEC_LOAD
) == 0)
297 if (!strcmp(bfd_section_name(bf
, sex
), ".text")) {
299 vp
->tend
= vp
->tstart
+ bfd_section_size(bf
, sex
);
301 /* When it comes to this adjustment value, in contrast to our previous
302 belief shared objects should behave the same as the main load segment.
303 This is the offset from the beginning of text section to the first
306 vp
->tadj
= sex
->filepos
- bfd_section_vma(bf
, sex
);
309 else if (!strcmp(bfd_section_name(bf
, sex
), ".data")) {
311 vp
->dend
= vp
->dstart
+ bfd_section_size(bf
, sex
);
314 else if (!strcmp(bfd_section_name(bf
, sex
), ".bss")) /* FIXMEmgo */
315 printf ("bss section in exec! Don't know what the heck to do!\n");
318 /* Make a vmap for the BFD "bf", which might be a member of the archive
319 BFD "arch". If we have not yet read in symbols for this file, do so. */
321 map_vmap (bfd
*bf
, bfd
*arch
)
323 struct vmap_and_bfd vmap_bfd
;
324 struct vmap
*vp
, **vpp
;
327 vp
= (void*) xmalloc (sizeof (*vp
));
328 bzero (vp
, sizeof (*vp
));
331 vp
->name
= bfd_get_filename(arch
? arch
: bf
);
332 vp
->member
= arch
? bfd_get_filename(bf
) : "";
334 vmap_bfd
.pbfd
= arch
;
336 bfd_map_over_sections (bf
, sex_to_vmap
, &vmap_bfd
);
338 obj
= lookup_objfile_bfd (bf
);
339 if (exec_bfd
&& !obj
) {
340 obj
= allocate_objfile (bf
, 0);
343 /* This is only needed if we want to load shared libraries no matter what.
344 Since we provide the choice of incremental loading of shared objects
345 now, we do not have to load them as default anymore. */
347 syms_from_objfile (obj
, 0, 0, 0);
348 new_symfile_objfile (obj
, 0, 0);
352 /* find the end of the list, and append. */
353 for (vpp
= &vmap
; *vpp
; vpp
= &(*vpp
)->nxt
)
359 /* true, if symbol table and minimal symbol table are relocated. */
361 int symtab_relocated
= 0;
364 /* vmap_symtab - handle symbol translation on vmapping */
366 vmap_symtab(vp
, old_start
, vip
)
367 register struct vmap
*vp
;
371 register struct symtab
*s
;
372 register struct objfile
*objfile
;
373 register struct minimal_symbol
*msymbol
;
376 * for each symbol table generated from the vp->bfd
378 ALL_OBJFILES (objfile
)
380 for (s
= objfile
-> symtabs
; s
!= NULL
; s
= s
-> next
) {
382 /* skip over if this is not relocatable and doesn't have a line table */
383 if (s
->nonreloc
&& !LINETABLE (s
))
386 /* matching the symbol table's BFD and the *vp's BFD is hairy.
387 exec_file creates a seperate BFD for possibly the
388 same file as symbol_file.FIXME ALL THIS MUST BE RECTIFIED. */
390 if (objfile
->obfd
== vp
->bfd
) {
391 /* if they match, we luck out. */
393 } else if (vp
->member
[0]) {
394 /* no match, and member present, not this one. */
401 * no match, and no member. need to be sure.
403 io
= bfd_cache_lookup(objfile
->obfd
);
405 fatal("cannot find BFD's iostream for sym");
407 * see if we are referring to the same file
409 if (fstat(fileno(io
), &si
) < 0)
410 fatal("cannot fstat BFD for sym");
412 if (vip
&& (si
.st_dev
!= vip
->st_dev
413 || si
.st_ino
!= vip
->st_ino
))
417 if (vp
->tstart
!= old_start
) {
419 /* Once we find a relocation base address for one of the symtabs
420 in this objfile, it will be the same for all symtabs in this
421 objfile. Clean this algorithm. FIXME. */
423 for (; s
; s
= s
->next
)
424 if (!s
->nonreloc
|| LINETABLE(s
))
425 vmap_symtab_1(s
, vp
, old_start
);
428 Himm
.., recently we nullified trampoline entry names in order
not
429 to confuse them with real symbols
. Appearently
this turned into a
430 problem
, and msymbol vector did
not get relocated properly
. If
431 msymbols have to have non
-null names
, then we should name
432 trampoline entries with empty strings
.
434 ALL_MSYMBOLS (objfile
, msymbol
)
436 for (msymbol
= objfile
->msymbols
;
437 msymbol
->name
|| msymbol
->address
; (msymbol
)++)
439 if (msymbol
->address
< TEXT_SEGMENT_BASE
)
440 msymbol
-> address
+= vp
->tstart
- old_start
;
447 if (vp
->tstart
!= old_start
) {
448 /* breakpoints need to be relocated as well. */
449 fixup_breakpoints (0, TEXT_SEGMENT_BASE
, vp
->tstart
- old_start
);
452 symtab_relocated
= 1;
456 vmap_symtab_1(s
, vp
, old_start
)
457 register struct symtab
*s
;
458 register struct vmap
*vp
;
463 register struct linetable
*l
;
464 struct blockvector
*bv
;
465 register struct block
*b
;
467 register ulong reloc
, dreloc
;
469 if ((reloc
= vp
->tstart
- old_start
) == 0)
472 dreloc
= vp
->dstart
; /* data relocation */
475 * The line table must be relocated. This is only present for
476 * .text sections, so only vp->text type maps need be considered.
481 for (i
= 0; i
< len
; i
++)
482 l
->item
[i
].pc
+= reloc
;
485 /* if this symbol table is not relocatable, only line table should
486 be relocated and the rest ignored. */
491 len
= BLOCKVECTOR_NBLOCKS(bv
);
493 for (i
= 0; i
< len
; i
++) {
494 b
= BLOCKVECTOR_BLOCK(bv
, i
);
496 BLOCK_START(b
) += reloc
;
497 BLOCK_END(b
) += reloc
;
499 blen
= BLOCK_NSYMS(b
);
500 for (j
= 0; j
< blen
; j
++) {
501 register struct symbol
*sym
;
503 sym
= BLOCK_SYM(b
, j
);
504 switch (SYMBOL_NAMESPACE(sym
)) {
505 case STRUCT_NAMESPACE
:
506 case UNDEF_NAMESPACE
:
509 case LABEL_NAMESPACE
:
514 switch (SYMBOL_CLASS(sym
)) {
516 case LOC_CONST_BYTES
:
530 SYMBOL_VALUE_ADDRESS(sym
) += reloc
;
534 SYMBOL_VALUE_ADDRESS(sym
) += dreloc
;
541 fatal("botched symbol class %x"
542 , SYMBOL_CLASS(sym
));
550 * add_vmap - add a new vmap entry based on ldinfo() information
553 register struct ld_info
*ldi
; {
555 register char *mem
, *objname
;
557 /* This ldi structure was allocated using alloca() in
558 xcoff_relocate_symtab(). Now we need to have persistent object
559 and member names, so we should save them. */
561 mem
= ldi
->ldinfo_filename
+ strlen(ldi
->ldinfo_filename
) + 1;
562 mem
= savestring (mem
, strlen (mem
));
563 objname
= savestring (ldi
->ldinfo_filename
, strlen (ldi
->ldinfo_filename
));
565 bfd
= bfd_fdopenr(objname
, NULL
, ldi
->ldinfo_fd
);
567 error("Could not open `%s' as an executable file: %s",
568 objname
, bfd_errmsg(bfd_error
));
571 /* make sure we have an object file */
573 if (bfd_check_format(bfd
, bfd_object
))
576 else if (bfd_check_format(bfd
, bfd_archive
)) {
579 * FIXME??? am I tossing BFDs? bfd?
581 while (last
= bfd_openr_next_archived_file(bfd
, last
))
582 if (eq(mem
, last
->filename
))
587 /* FIXME -- should be error */
588 warning("\"%s\": member \"%s\" missing.", bfd
->filename
, mem
);
592 if (!bfd_check_format(last
, bfd_object
)) {
593 bfd_close(last
); /* XXX??? */
597 map_vmap (last
, bfd
);
602 /* FIXME -- should be error */
603 warning("\"%s\": not in executable format: %s."
604 , objname
, bfd_errmsg(bfd_error
));
610 /* As well as symbol tables, exec_sections need relocation. After
611 the inferior process' termination, there will be a relocated symbol
612 table exist with no corresponding inferior process. At that time, we
613 need to use `exec' bfd, rather than the inferior process's memory space
616 `exec_sections' need to be relocated only once, as long as the exec
617 file remains unchanged.
624 if (execbfd
== exec_bfd
)
629 if (!vmap
|| !exec_ops
.to_sections
)
630 error ("vmap_exec: vmap or exec_ops.to_sections == 0\n");
632 for (i
=0; &exec_ops
.to_sections
[i
] < exec_ops
.to_sections_end
; i
++)
634 if (strcmp(".text", exec_ops
.to_sections
[i
].sec_ptr
->name
) == 0)
636 exec_ops
.to_sections
[i
].addr
+= vmap
->tstart
;
637 exec_ops
.to_sections
[i
].endaddr
+= vmap
->tstart
;
639 else if (strcmp(".data", exec_ops
.to_sections
[i
].sec_ptr
->name
) == 0)
641 exec_ops
.to_sections
[i
].addr
+= vmap
->dstart
;
642 exec_ops
.to_sections
[i
].endaddr
+= vmap
->dstart
;
649 text_adjustment (abfd
)
653 static int adjustment
;
656 if (exec_bfd
== execbfd
)
659 sect
= bfd_get_section_by_name (abfd
, ".text");
661 adjustment
= sect
->filepos
- sect
->vma
;
663 adjustment
= 0x200; /* just a wild assumption */
670 * vmap_ldinfo - update VMAP info with ldinfo() information
673 * ldi - ^ to ldinfo() results.
676 register struct ld_info
*ldi
;
679 register struct vmap
*vp
;
680 register got_one
, retried
;
684 * for each *ldi, see if we have a corresponding *vp
685 * if so, update the mapping, and symbol table.
686 * if not, add an entry and symbol table.
689 char *name
= ldi
->ldinfo_filename
;
690 char *memb
= name
+ strlen(name
) + 1;
694 if (fstat(ldi
->ldinfo_fd
, &ii
) < 0)
695 fatal("cannot fstat(%d) on %s"
699 for (got_one
= 0, vp
= vmap
; vp
; vp
= vp
->nxt
) {
702 /* First try to find a `vp', which is the same as in ldinfo.
703 If not the same, just continue and grep the next `vp'. If same,
704 relocate its tstart, tend, dstart, dend values. If no such `vp'
705 found, get out of this for loop, add this ldi entry as a new vmap
706 (add_vmap) and come back, fins its `vp' and so on... */
708 /* The filenames are not always sufficient to match on. */
710 if ((name
[0] == "/" && !eq(name
, vp
->name
))
711 || (memb
[0] && !eq(memb
, vp
->member
)))
714 io
= bfd_cache_lookup(vp
->bfd
); /* totally opaque! */
716 fatal("cannot find BFD's iostream for %s", vp
->name
);
718 /* see if we are referring to the same file */
720 if (fstat(fileno(io
), &vi
) < 0)
721 fatal("cannot fstat BFD for %s", vp
->name
);
723 if (ii
.st_dev
!= vi
.st_dev
|| ii
.st_ino
!= vi
.st_ino
)
727 close(ldi
->ldinfo_fd
);
731 /* found a corresponding VMAP. remap! */
734 vp
->tstart
= ldi
->ldinfo_textorg
;
735 vp
->tend
= vp
->tstart
+ ldi
->ldinfo_textsize
;
736 vp
->dstart
= ldi
->ldinfo_dataorg
;
737 vp
->dend
= vp
->dstart
+ ldi
->ldinfo_datasize
;
740 vp
->tstart
+= vp
->tadj
;
741 vp
->tend
+= vp
->tadj
;
744 /* relocate symbol table(s). */
745 vmap_symtab(vp
, ostart
, &vi
);
747 /* there may be more, so we don't break out of the loop. */
750 /* if there was no matching *vp, we must perforce create the sucker(s) */
751 if (!got_one
&& !retried
) {
756 } while (ldi
->ldinfo_next
757 && (ldi
= (void *) (ldi
->ldinfo_next
+ (char *) ldi
)));
762 * vmap_inferior - print VMAP info for inferior
766 if (inferior_pid
== 0)
767 return 0; /* normal processing */
773 /* Read or write the exec file.
775 Args are address within exec file, address within gdb address-space,
776 length, and a flag indicating whether to read or write.
780 0: We cannot handle this address and length.
781 > 0: We have handled N bytes starting at this address.
782 (If N == length, we did it all.) We might be able
783 to handle more bytes beyond this length, but no
785 < 0: We cannot handle this address, but if somebody
786 else handles (-N) bytes, we can start from there.
788 The same routine is used to handle both core and exec files;
789 we just tail-call it with more arguments to select between them. */
792 xfer_memory (memaddr
, myaddr
, len
, write
, target
)
797 struct target_ops
*target
;
800 struct section_table
*p
;
801 CORE_ADDR nextsectaddr
, memend
;
802 boolean (*xfer_fn
) PARAMS ((bfd
*, sec_ptr
, PTR
, file_ptr
, bfd_size_type
));
807 memend
= memaddr
+ len
;
808 xfer_fn
= write
? bfd_set_section_contents
: bfd_get_section_contents
;
809 nextsectaddr
= memend
;
811 for (p
= target
->to_sections
; p
< target
->to_sections_end
; p
++)
813 if (p
->addr
<= memaddr
)
814 if (p
->endaddr
>= memend
)
816 /* Entire transfer is within this section. */
817 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
818 return (res
!= false)? len
: 0;
820 else if (p
->endaddr
<= memaddr
)
822 /* This section ends before the transfer starts. */
827 /* This section overlaps the transfer. Just do half. */
828 len
= p
->endaddr
- memaddr
;
829 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
830 return (res
!= false)? len
: 0;
832 else if (p
->addr
< nextsectaddr
)
833 nextsectaddr
= p
->addr
;
836 if (nextsectaddr
>= memend
)
837 return 0; /* We can't help */
839 return - (nextsectaddr
- memaddr
); /* Next boundary where we can help */
843 print_section_info (t
, abfd
)
844 struct target_ops
*t
;
847 struct section_table
*p
;
849 printf_filtered ("\t`%s', ", bfd_get_filename(abfd
));
851 printf_filtered ("file type %s.\n", bfd_get_target(abfd
));
853 for (p
= t
->to_sections
; p
< t
->to_sections_end
; p
++) {
854 printf_filtered ("\t%s", local_hex_string_custom (p
->addr
, "08"));
855 printf_filtered (" - %s", local_hex_string_custom (p
->endaddr
, "08"));
857 printf_filtered (" @ %s",
858 local_hex_string_custom (p
->sec_ptr
->filepos
, "08"));
859 printf_filtered (" is %s", bfd_section_name (p
->bfd
, p
->sec_ptr
));
860 if (p
->bfd
!= abfd
) {
861 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
863 printf_filtered ("\n");
870 struct target_ops
*t
;
872 register struct vmap
*vp
= vmap
;
874 print_section_info (t
, exec_bfd
);
879 printf("\tMapping info for file `%s'.\n", vp
->name
);
881 printf("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
882 "tstart", "tend", "dstart", "dend", "section", "file(member)");
884 for (; vp
; vp
= vp
->nxt
)
885 printf("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n",
891 *vp
->member
? "(" : "",
893 *vp
->member
? ")" : "");
897 /* Damon's implementation of set_section_command! It is based on the sex member
898 (which is a section pointer from vmap) of vmap.
899 We will not have multiple vmap entries (one for each section), rather transmit
900 text and data base offsets and fix them at the same time. Elimination of sex
901 entry in vmap make this function obsolute, use the one from exec.c.
902 Need further testing!! FIXMEmgo. */
905 set_section_command(args
, from_tty
)
908 register struct vmap
*vp
= vmap
;
911 unsigned long secaddr
;
916 error("Must specify section name and its virtual address");
918 /* Parse out section name */
919 for (secname
= args
; !isspace(*args
); args
++)
921 seclen
= args
- secname
;
923 /* Parse out new virtual address */
924 secaddr
= parse_and_eval_address(args
);
926 for (vp
= vmap
; vp
; vp
= vp
->nxt
) {
928 , bfd_section_name(vp
->bfd
, vp
->sex
), seclen
)
929 && bfd_section_name(vp
->bfd
, vp
->sex
)[seclen
] == '\0') {
930 offset
= secaddr
- vp
->tstart
;
931 vp
->tstart
+= offset
;
938 if (seclen
>= sizeof(secprint
))
939 seclen
= sizeof(secprint
) - 1;
940 strncpy(secprint
, secname
, seclen
);
941 secprint
[seclen
] = '\0';
942 error("Section %s not found", secprint
);
946 set_section_command (args
, from_tty
)
950 struct section_table
*p
;
953 unsigned long secaddr
;
958 error ("Must specify section name and its virtual address");
960 /* Parse out section name */
961 for (secname
= args
; !isspace(*args
); args
++) ;
962 seclen
= args
- secname
;
964 /* Parse out new virtual address */
965 secaddr
= parse_and_eval_address (args
);
967 for (p
= exec_ops
.to_sections
; p
< exec_ops
.to_sections_end
; p
++) {
968 if (!strncmp (secname
, bfd_section_name (exec_bfd
, p
->sec_ptr
), seclen
)
969 && bfd_section_name (exec_bfd
, p
->sec_ptr
)[seclen
] == '\0') {
970 offset
= secaddr
- p
->addr
;
972 p
->endaddr
+= offset
;
974 exec_files_info(&exec_ops
);
978 if (seclen
>= sizeof (secprint
))
979 seclen
= sizeof (secprint
) - 1;
980 strncpy (secprint
, secname
, seclen
);
981 secprint
[seclen
] = '\0';
982 error ("Section %s not found", secprint
);
987 struct target_ops exec_ops
= {
988 "exec", "Local exec file",
989 "Use an executable file as a target.\n\
990 Specify the filename of the executable file.",
991 exec_file_command
, exec_close
, /* open, close */
992 child_attach
, 0, 0, 0, /* attach, detach, resume, wait, */
993 0, 0, /* fetch_registers, store_registers, */
994 0, /* prepare_to_store */
995 xfer_memory
, exec_files_info
,
996 0, 0, /* insert_breakpoint, remove_breakpoint, */
997 0, 0, 0, 0, 0, /* terminal stuff */
998 0, 0, /* kill, load */
1000 child_create_inferior
,
1001 0, /* mourn_inferior */
1002 file_stratum
, 0, /* next */
1003 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
1004 0, 0, /* section pointers */
1005 OPS_MAGIC
, /* Always the last thing */
1013 add_com("file", class_files
, file_command
,
1014 "Use FILE as program to be debugged.\n\
1015 It is read for its symbols, for getting the contents of pure memory,\n\
1016 and it is the program executed when you use the `run' command.\n\
1017 If FILE cannot be found as specified, your execution directory path\n\
1018 ($PATH) is searched for a command of that name.\n\
1019 No arg means to have no executable file and no symbols.");
1021 add_com("exec-file", class_files
, exec_file_command
,
1022 "Use FILE as program for getting contents of pure memory.\n\
1023 If FILE cannot be found as specified, your execution directory path\n\
1024 is searched for a command of that name.\n\
1025 No arg means have no executable file.");
1027 add_com("section", class_files
, set_section_command
,
1028 "Change the base address of section SECTION of the exec file to ADDR.\n\
1029 This can be used if the exec file does not contain section addresses,\n\
1030 (such as in the a.out format), or when the addresses specified in the\n\
1031 file itself are wrong. Each section must be changed separately. The\n\
1032 ``info files'' command lists all the sections and their addresses.");
1034 add_target(&exec_ops
);