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 /* Prototypes for local functions */
47 file_command
PARAMS ((char *, int));
50 exec_close
PARAMS ((int));
52 struct section_table
*exec_sections
, *exec_sections_end
;
54 #define eq(s0, s1) !strcmp(s0, s1)
56 /* Whether to open exec and core files read-only or read-write. */
60 extern int info_verbose
;
62 bfd
*exec_bfd
; /* needed by core.c */
64 extern char *getenv();
65 extern void child_create_inferior (), child_attach ();
66 extern void add_syms_addr_command ();
67 extern void symbol_file_command ();
68 static void exec_files_info();
69 extern struct objfile
*lookup_objfile_bfd ();
72 * the vmap struct is used to describe the virtual address space of
73 * the target we are manipulating. The first entry is always the "exec"
74 * file. Subsequent entries correspond to other objects that are
75 * mapped into the address space of a process created from the "exec" file.
76 * These are either in response to exec()ing the file, in which case all
77 * shared libraries are loaded, or a "load" system call, followed by the
78 * user's issuance of a "load" command.
81 struct vmap
*nxt
; /* ^ to next in chain */
82 bfd
*bfd
; /* BFD for mappable object library */
83 char *name
; /* ^ to object file name */
84 char *member
; /* ^ to member name */
85 CORE_ADDR tstart
; /* virtual addr where member is mapped */
86 CORE_ADDR tend
; /* virtual upper bound of member */
87 CORE_ADDR tadj
; /* heuristically derived adjustment */
88 CORE_ADDR dstart
; /* virtual address of data start */
89 CORE_ADDR dend
; /* vitrual address of data end */
98 static struct vmap
*vmap
; /* current vmap */
100 extern struct target_ops exec_ops
;
103 /* exec_close - done with exec file, clean up all resources. */
108 register struct vmap
*vp
, *nxt
;
111 for (nxt
= vmap
; vp
= nxt
; )
115 /* if there is an objfile associated with this bfd,
116 free_objfile() will do proper cleanup of objfile *and* bfd. */
118 if (obj
= lookup_objfile_bfd (vp
->bfd
))
123 free_named_symtabs(vp
->name
);
130 bfd_close (exec_bfd
);
133 if (exec_ops
.to_sections
) {
134 free (exec_ops
.to_sections
);
135 exec_ops
.to_sections
= NULL
;
136 exec_ops
.to_sections_end
= NULL
;
141 * exec_file_command - handle the "exec" command, &c.
144 exec_file_command(filename
, from_tty
)
147 target_preopen(from_tty
);
149 /* Remove any previous exec file. */
150 unpush_target(&exec_ops
);
152 /* Now open and digest the file the user requested, if any. */
155 char *scratch_pathname
;
158 filename
= tilde_expand(filename
);
159 make_cleanup (free
, filename
);
161 scratch_chan
= openp(getenv("PATH"), 1, filename
,
162 write_files
? O_RDWR
: O_RDONLY
, 0,
164 if (scratch_chan
< 0)
165 perror_with_name(filename
);
167 exec_bfd
= bfd_fdopenr(scratch_pathname
, NULL
, scratch_chan
);
169 error("Could not open `%s' as an executable file: %s"
170 , scratch_pathname
, bfd_errmsg(bfd_error
));
172 /* make sure we have an object file */
174 if (!bfd_check_format(exec_bfd
, bfd_object
))
175 error("\"%s\": not in executable format: %s.",
176 scratch_pathname
, bfd_errmsg(bfd_error
));
179 /* setup initial vmap */
181 map_vmap (exec_bfd
, 0);
183 error("Can't find the file sections in `%s': %s",
184 exec_bfd
->filename
, bfd_errmsg(bfd_error
));
186 if (build_section_table (exec_bfd
, &exec_ops
.to_sections
,
187 &exec_ops
.to_sections_end
))
188 error ("Can't find the file sections in `%s': %s",
189 exec_bfd
->filename
, bfd_errmsg (bfd_error
));
191 /* make sure core, if present, matches */
194 push_target(&exec_ops
);
196 /* Tell display code(if any) about the changed file name. */
198 if (exec_file_display_hook
)
199 (*exec_file_display_hook
)(filename
);
202 exec_close(0); /* just in case */
204 printf("No exec file now.\n");
208 /* Set both the exec file and the symbol file, in one command. What a
209 * novelty. Why did GDB go through four major releases before this
213 file_command(arg
, from_tty
)
216 exec_file_command(arg
, from_tty
);
217 symbol_file_command(arg
, from_tty
);
220 /* Locate all mappable sections of a BFD file.
221 table_pp_char is a char * to get it through bfd_map_over_sections;
222 we cast it back to its proper type. */
225 add_to_section_table (abfd
, asect
, table_pp_char
)
230 struct section_table
**table_pp
= (struct section_table
**)table_pp_char
;
233 aflag
= bfd_get_section_flags (abfd
, asect
);
234 /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */
235 if (!(aflag
& SEC_LOAD
))
237 if (0 == bfd_section_size (abfd
, asect
))
239 (*table_pp
)->bfd
= abfd
;
240 (*table_pp
)->sec_ptr
= asect
;
241 (*table_pp
)->addr
= bfd_section_vma (abfd
, asect
);
242 (*table_pp
)->endaddr
= (*table_pp
)->addr
+ bfd_section_size (abfd
, asect
);
247 build_section_table (some_bfd
, start
, end
)
249 struct section_table
**start
, **end
;
253 count
= bfd_count_sections (some_bfd
);
255 abort(); /* return 1? */
258 *start
= (struct section_table
*) xmalloc (count
* sizeof (**start
));
260 bfd_map_over_sections (some_bfd
, add_to_section_table
, (char *)end
);
261 if (*end
> *start
+ count
)
263 /* We could realloc the table, but it probably loses for most files. */
268 * lookup_symtab_bfd - find if we currently have any symbol tables from bfd
271 lookup_objfile_bfd(bfd
*bfd
) {
272 register struct objfile
*s
;
274 for (s
= object_files
; s
; s
= s
->next
)
282 sex_to_vmap(bfd
*bf
, sec_ptr sex
, struct vmap_and_bfd
*vmap_bfd
)
284 register struct vmap
*vp
, **vpp
;
285 register struct symtab
*syms
;
286 bfd
*arch
= vmap_bfd
->pbfd
;
287 vp
= vmap_bfd
->pvmap
;
289 if ((bfd_get_section_flags(bf
, sex
) & SEC_LOAD
) == 0)
292 if (!strcmp(bfd_section_name(bf
, sex
), ".text")) {
294 vp
->tend
= vp
->tstart
+ bfd_section_size(bf
, sex
);
296 /* When it comes to this adjustment value, in contrast to our previous
297 belief shared objects should behave the same as the main load segment.
298 This is the offset from the beginning of text section to the first
301 vp
->tadj
= sex
->filepos
- bfd_section_vma(bf
, sex
);
304 else if (!strcmp(bfd_section_name(bf
, sex
), ".data")) {
306 vp
->dend
= vp
->dstart
+ bfd_section_size(bf
, sex
);
309 else if (!strcmp(bfd_section_name(bf
, sex
), ".bss")) /* FIXMEmgo */
310 printf ("bss section in exec! Don't know what the heck to do!\n");
313 /* Make a vmap for the BFD "bf", which might be a member of the archive
314 BFD "arch". If we have not yet read in symbols for this file, do so. */
316 map_vmap (bfd
*bf
, bfd
*arch
)
318 struct vmap_and_bfd vmap_bfd
;
319 struct vmap
*vp
, **vpp
;
322 vp
= (void*) xmalloc (sizeof (*vp
));
325 vp
->name
= bfd_get_filename(arch
? arch
: bf
);
326 vp
->member
= arch
? bfd_get_filename(bf
) : "";
328 vmap_bfd
.pbfd
= arch
;
330 bfd_map_over_sections (bf
, sex_to_vmap
, &vmap_bfd
);
332 obj
= lookup_objfile_bfd (bf
);
333 if (exec_bfd
&& !obj
) {
334 obj
= allocate_objfile (bf
, 0);
335 syms_from_objfile (obj
, 0, 0, 0);
338 /* find the end of the list, and append. */
339 for (vpp
= &vmap
; *vpp
; vpp
= &(*vpp
)->nxt
)
345 #define FASTER_MSYMBOL_RELOCATION 1
347 #ifdef FASTER_MSYMBOL_RELOCATION
349 /* Used to relocate an object file's minimal symbols. */
352 reloc_objfile_msymbols (objf
, addr
)
353 struct objfile
*objf
;
356 register struct minimal_symbol
*msymbol
;
359 for (msymbol
= objf
->msymbols
, ii
=0;
360 msymbol
&& ii
< objf
->minimal_symbol_count
; ++msymbol
, ++ii
)
362 if (msymbol
->address
< TEXT_SEGMENT_BASE
)
363 msymbol
->address
+= addr
;
366 #else /* !FASTER_MSYMBOL_RELOCATION */
368 /* Called via iterate_over_msymbols to relocate minimal symbols */
371 relocate_minimal_symbol (objfile
, msymbol
, arg1
, arg2
, arg3
)
372 struct objfile
*objfile
;
373 struct minimal_symbol
*msymbol
;
378 if (msymbol
->address
< TEXT_SEGMENT_BASE
)
379 msymbol
-> address
+= (int) arg1
;
381 /* return 0, otherwise `iterate_over_msymbols()' will stop at the
385 #endif /* FASTER_MSYMBOL_RELOCATION */
387 /* true, if symbol table and minimal symbol table are relocated. */
389 int symtab_relocated
= 0;
392 /* vmap_symtab - handle symbol translation on vmapping */
394 vmap_symtab(vp
, old_start
, vip
)
395 register struct vmap
*vp
;
399 register struct symtab
*s
;
400 register struct objfile
*objfile
;
403 * for each symbol table generated from the vp->bfd
405 for (objfile
= object_files
; objfile
!= NULL
; objfile
= objfile
-> next
)
407 for (s
= objfile
-> symtabs
; s
!= NULL
; s
= s
-> next
) {
409 /* skip over if this is not relocatable and doesn't have a line table */
410 if (s
->nonreloc
&& !LINETABLE (s
))
413 /* matching the symbol table's BFD and the *vp's BFD is hairy.
414 exec_file creates a seperate BFD for possibly the
415 same file as symbol_file.FIXME ALL THIS MUST BE RECTIFIED. */
417 if (objfile
->obfd
== vp
->bfd
) {
418 /* if they match, we luck out. */
420 } else if (vp
->member
[0]) {
421 /* no match, and member present, not this one. */
428 * no match, and no member. need to be sure.
430 io
= bfd_cache_lookup(objfile
->obfd
);
432 fatal("cannot find BFD's iostream for sym");
434 * see if we are referring to the same file
436 if (fstat(fileno(io
), &si
) < 0)
437 fatal("cannot fstat BFD for sym");
439 if (si
.st_dev
!= vip
->st_dev
440 || si
.st_ino
!= vip
->st_ino
)
444 if (vp
->tstart
!= old_start
) {
446 /* Once we find a relocation base address for one of the symtabs
447 in this objfile, it will be the same for all symtabs in this
448 objfile. Clean this algorithm. FIXME. */
450 for (; s
; s
= s
->next
)
451 if (!s
->nonreloc
|| LINETABLE(s
))
452 vmap_symtab_1(s
, vp
, old_start
);
454 #ifdef FASTER_MSYMBOL_RELOCATION
455 /* we can rely on the fact that at least one symtab in this objfile
456 will get relocated. Thus, we can be sure that minimal symbol
457 vector is guaranteed for relocation. */
459 reloc_objfile_msymbols (objfile
, vp
->tstart
- old_start
);
466 if (vp
->tstart
!= old_start
) {
467 #ifndef FASTER_MSYMBOL_RELOCATION
468 (void) iterate_over_msymbols (relocate_minimal_symbol
,
469 (PTR
) (vp
->tstart
- old_start
),
470 (PTR
) NULL
, (PTR
) NULL
);
473 /* breakpoints need to be relocated as well. */
474 fixup_breakpoints (0, TEXT_SEGMENT_BASE
, vp
->tstart
- old_start
);
477 symtab_relocated
= 1;
481 vmap_symtab_1(s
, vp
, old_start
)
482 register struct symtab
*s
;
483 register struct vmap
*vp
;
488 register struct linetable
*l
;
489 struct blockvector
*bv
;
490 register struct block
*b
;
492 register ulong reloc
, dreloc
;
494 if ((reloc
= vp
->tstart
- old_start
) == 0)
497 dreloc
= vp
->dstart
; /* data relocation */
500 * The line table must be relocated. This is only present for
501 * .text sections, so only vp->text type maps need be considered.
506 for (i
= 0; i
< len
; i
++)
507 l
->item
[i
].pc
+= reloc
;
510 /* if this symbol table is not relocatable, only line table should
511 be relocated and the rest ignored. */
516 len
= BLOCKVECTOR_NBLOCKS(bv
);
518 for (i
= 0; i
< len
; i
++) {
519 b
= BLOCKVECTOR_BLOCK(bv
, i
);
521 BLOCK_START(b
) += reloc
;
522 BLOCK_END(b
) += reloc
;
524 blen
= BLOCK_NSYMS(b
);
525 for (j
= 0; j
< blen
; j
++) {
526 register struct symbol
*sym
;
528 sym
= BLOCK_SYM(b
, j
);
529 switch (SYMBOL_NAMESPACE(sym
)) {
530 case STRUCT_NAMESPACE
:
531 case UNDEF_NAMESPACE
:
534 case LABEL_NAMESPACE
:
539 switch (SYMBOL_CLASS(sym
)) {
541 case LOC_CONST_BYTES
:
555 SYMBOL_VALUE_ADDRESS(sym
) += reloc
;
559 SYMBOL_VALUE_ADDRESS(sym
) += dreloc
;
566 fatal("botched symbol class %x"
567 , SYMBOL_CLASS(sym
));
575 * add_vmap - add a new vmap entry based on ldinfo() information
578 register struct ld_info
*ldi
; {
580 register char *mem
, *objname
;
582 /* This ldi structure was allocated using alloca() in
583 aixcoff_relocate_symtab(). Now we need to have persistent object
584 and member names, so we should save them. */
586 mem
= ldi
->ldinfo_filename
+ strlen(ldi
->ldinfo_filename
) + 1;
587 mem
= savestring (mem
, strlen (mem
));
588 objname
= savestring (ldi
->ldinfo_filename
, strlen (ldi
->ldinfo_filename
));
590 bfd
= bfd_fdopenr(objname
, NULL
, ldi
->ldinfo_fd
);
592 error("Could not open `%s' as an executable file: %s",
593 objname
, bfd_errmsg(bfd_error
));
596 /* make sure we have an object file */
598 if (bfd_check_format(bfd
, bfd_object
))
601 else if (bfd_check_format(bfd
, bfd_archive
)) {
604 * FIXME??? am I tossing BFDs? bfd?
606 while (last
= bfd_openr_next_archived_file(bfd
, last
))
607 if (eq(mem
, last
->filename
))
612 /* FIXME -- should be error */
613 warning("\"%s\": member \"%s\" missing.", bfd
->filename
, mem
);
617 if (!bfd_check_format(last
, bfd_object
)) {
618 bfd_close(last
); /* XXX??? */
622 map_vmap (last
, bfd
);
627 /* FIXME -- should be error */
628 warning("\"%s\": not in executable format: %s."
629 , objname
, bfd_errmsg(bfd_error
));
635 /* As well as symbol tables, exec_sections need relocation. After
636 the inferior process' termination, there will be a relocated symbol
637 table exist with no corresponding inferior process. At that time, we
638 need to use `exec' bfd, rather than the inferior process's memory space
641 `exec_sections' need to be relocated only once, as long as the exec
642 file remains unchanged.
647 if (execbfd
== exec_bfd
)
652 /* First exec section is `.text', second is `.data'. If this is changed,
653 then this routine will choke. */
655 if (!vmap
|| !exec_ops
.to_sections
||
656 strcmp (exec_ops
.to_sections
[0].sec_ptr
->name
, ".text") ||
657 strcmp (exec_ops
.to_sections
[1].sec_ptr
->name
, ".data"))
659 fatal ("aix: Improper exec_ops sections.");
661 exec_ops
.to_sections
[0].addr
+= vmap
->tstart
;
662 exec_ops
.to_sections
[0].endaddr
+= vmap
->tstart
;
663 exec_ops
.to_sections
[1].addr
+= vmap
->dstart
;
664 exec_ops
.to_sections
[1].endaddr
+= vmap
->dstart
;
669 text_adjustment (abfd
)
673 static int adjustment
;
676 if (exec_bfd
== execbfd
)
679 sect
= bfd_get_section_by_name (abfd
, ".text");
681 adjustment
= sect
->filepos
- sect
->vma
;
683 adjustment
= 0x200; /* just a wild assumption */
690 * vmap_ldinfo - update VMAP info with ldinfo() information
693 * ldi - ^ to ldinfo() results.
696 register struct ld_info
*ldi
;
699 register struct vmap
*vp
;
700 register got_one
, retried
;
704 * for each *ldi, see if we have a corresponding *vp
705 * if so, update the mapping, and symbol table.
706 * if not, add an entry and symbol table.
709 char *name
= ldi
->ldinfo_filename
;
710 char *memb
= name
+ strlen(name
) + 1;
714 if (fstat(ldi
->ldinfo_fd
, &ii
) < 0)
715 fatal("cannot fstat(%d) on %s"
719 for (got_one
= 0, vp
= vmap
; vp
; vp
= vp
->nxt
) {
722 /* The filenames are not always sufficient to match on. */
724 && !eq(name
, vp
->name
))
725 || (memb
[0] && !eq(memb
, vp
->member
)))
728 /* totally opaque! */
729 io
= bfd_cache_lookup(vp
->bfd
);
731 fatal("cannot find BFD's iostream for %s"
734 /* see if we are referring to the same file */
735 if (fstat(fileno(io
), &vi
) < 0)
736 fatal("cannot fstat BFD for %s", vp
->name
);
738 if (ii
.st_dev
!= vi
.st_dev
|| ii
.st_ino
!= vi
.st_ino
)
742 close(ldi
->ldinfo_fd
);
746 /* found a corresponding VMAP. remap! */
749 vp
->tstart
= ldi
->ldinfo_textorg
;
750 vp
->tend
= vp
->tstart
+ ldi
->ldinfo_textsize
;
751 vp
->dstart
= ldi
->ldinfo_dataorg
;
752 vp
->dend
= vp
->dstart
+ ldi
->ldinfo_datasize
;
755 vp
->tstart
+= vp
->tadj
;
756 vp
->tend
+= vp
->tadj
;
759 /* relocate symbol table(s). */
760 vmap_symtab(vp
, ostart
, &vi
);
762 /* there may be more, so we don't break out of the loop. */
766 * if there was no matching *vp, we must perforce create
769 if (!got_one
&& !retried
) {
774 } while (ldi
->ldinfo_next
775 && (ldi
= (void *) (ldi
->ldinfo_next
+ (char *) ldi
)));
780 * vmap_inferior - print VMAP info for inferior
784 if (inferior_pid
== 0)
785 return 0; /* normal processing */
791 /* Read or write the exec file.
793 Args are address within exec file, address within gdb address-space,
794 length, and a flag indicating whether to read or write.
798 0: We cannot handle this address and length.
799 > 0: We have handled N bytes starting at this address.
800 (If N == length, we did it all.) We might be able
801 to handle more bytes beyond this length, but no
803 < 0: We cannot handle this address, but if somebody
804 else handles (-N) bytes, we can start from there.
806 The same routine is used to handle both core and exec files;
807 we just tail-call it with more arguments to select between them. */
810 xfer_memory (memaddr
, myaddr
, len
, write
, target
)
815 struct target_ops
*target
;
818 struct section_table
*p
;
819 CORE_ADDR nextsectaddr
, memend
;
820 boolean (*xfer_fn
) PARAMS ((bfd
*, sec_ptr
, PTR
, file_ptr
, bfd_size_type
));
825 memend
= memaddr
+ len
;
826 xfer_fn
= write
? bfd_set_section_contents
: bfd_get_section_contents
;
827 nextsectaddr
= memend
;
829 for (p
= target
->to_sections
; p
< target
->to_sections_end
; p
++)
831 if (p
->addr
<= memaddr
)
832 if (p
->endaddr
>= memend
)
834 /* Entire transfer is within this section. */
835 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
836 return (res
!= false)? len
: 0;
838 else if (p
->endaddr
<= memaddr
)
840 /* This section ends before the transfer starts. */
845 /* This section overlaps the transfer. Just do half. */
846 len
= p
->endaddr
- memaddr
;
847 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
848 return (res
!= false)? len
: 0;
850 else if (p
->addr
< nextsectaddr
)
851 nextsectaddr
= p
->addr
;
854 if (nextsectaddr
>= memend
)
855 return 0; /* We can't help */
857 return - (nextsectaddr
- memaddr
); /* Next boundary where we can help */
861 print_section_info (t
, abfd
)
862 struct target_ops
*t
;
865 struct section_table
*p
;
867 printf_filtered ("\t`%s', ", bfd_get_filename(abfd
));
869 printf_filtered ("file type %s.\n", bfd_get_target(abfd
));
871 for (p
= t
->to_sections
; p
< t
->to_sections_end
; p
++) {
872 printf_filtered ("\t%s", local_hex_string_custom (p
->addr
, "08"));
873 printf_filtered (" - %s", local_hex_string_custom (p
->endaddr
, "08"));
875 printf_filtered (" @ %s",
876 local_hex_string_custom (p
->sec_ptr
->filepos
, "08"));
877 printf_filtered (" is %s", bfd_section_name (p
->bfd
, p
->sec_ptr
));
878 if (p
->bfd
!= abfd
) {
879 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
881 printf_filtered ("\n");
888 struct target_ops
*t
;
890 register struct vmap
*vp
= vmap
;
892 print_section_info (t
, exec_bfd
);
897 printf("\n\tMapping info for file `%s'.\n", vp
->name
);
898 printf("\t %8.8s %8.8s %8.8s %s\n",
899 "start", "end", "section", "file(member)");
901 for (; vp
; vp
= vp
->nxt
)
902 printf("\t0x%8.8x 0x%8.8x %s%s%s%s\n",
906 vp
->member
? "(" : "",
908 vp
->member
? ")" : "");
912 /* Damon's implementation of set_section_command! It is based on the sex member
913 (which is a section pointer from vmap) of vmap.
914 We will not have multiple vmap entries (one for each section), rather transmit
915 text and data base offsets and fix them at the same time. Elimination of sex
916 entry in vmap make this function obsolute, use the one from exec.c.
917 Need further testing!! FIXMEmgo. */
920 set_section_command(args
, from_tty
)
923 register struct vmap
*vp
= vmap
;
926 unsigned long secaddr
;
931 error("Must specify section name and its virtual address");
933 /* Parse out section name */
934 for (secname
= args
; !isspace(*args
); args
++)
936 seclen
= args
- secname
;
938 /* Parse out new virtual address */
939 secaddr
= parse_and_eval_address(args
);
941 for (vp
= vmap
; vp
; vp
= vp
->nxt
) {
943 , bfd_section_name(vp
->bfd
, vp
->sex
), seclen
)
944 && bfd_section_name(vp
->bfd
, vp
->sex
)[seclen
] == '\0') {
945 offset
= secaddr
- vp
->tstart
;
946 vp
->tstart
+= offset
;
953 if (seclen
>= sizeof(secprint
))
954 seclen
= sizeof(secprint
) - 1;
955 strncpy(secprint
, secname
, seclen
);
956 secprint
[seclen
] = '\0';
957 error("Section %s not found", secprint
);
961 set_section_command (args
, from_tty
)
965 struct section_table
*p
;
968 unsigned long secaddr
;
973 error ("Must specify section name and its virtual address");
975 /* Parse out section name */
976 for (secname
= args
; !isspace(*args
); args
++) ;
977 seclen
= args
- secname
;
979 /* Parse out new virtual address */
980 secaddr
= parse_and_eval_address (args
);
982 for (p
= exec_ops
.to_sections
; p
< exec_ops
.to_sections_end
; p
++) {
983 if (!strncmp (secname
, bfd_section_name (exec_bfd
, p
->sec_ptr
), seclen
)
984 && bfd_section_name (exec_bfd
, p
->sec_ptr
)[seclen
] == '\0') {
985 offset
= secaddr
- p
->addr
;
987 p
->endaddr
+= offset
;
989 exec_files_info(&exec_ops
);
993 if (seclen
>= sizeof (secprint
))
994 seclen
= sizeof (secprint
) - 1;
995 strncpy (secprint
, secname
, seclen
);
996 secprint
[seclen
] = '\0';
997 error ("Section %s not found", secprint
);
1002 struct target_ops exec_ops
= {
1003 "exec", "Local exec file",
1004 "Use an executable file as a target.\n\
1005 Specify the filename of the executable file.",
1006 exec_file_command
, exec_close
, /* open, close */
1007 child_attach
, 0, 0, 0, /* attach, detach, resume, wait, */
1008 0, 0, /* fetch_registers, store_registers, */
1009 0, 0, 0, /* prepare_to_store, conv_to, conv_from, */
1010 xfer_memory
, exec_files_info
,
1011 0, 0, /* insert_breakpoint, remove_breakpoint, */
1012 0, 0, 0, 0, 0, /* terminal stuff */
1013 0, 0, /* kill, load */
1015 child_create_inferior
,
1016 0, /* mourn_inferior */
1017 file_stratum
, 0, /* next */
1018 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
1019 0, 0, /* section pointers */
1020 OPS_MAGIC
, /* Always the last thing */
1028 add_com("file", class_files
, file_command
,
1029 "Use FILE as program to be debugged.\n\
1030 It is read for its symbols, for getting the contents of pure memory,\n\
1031 and it is the program executed when you use the `run' command.\n\
1032 If FILE cannot be found as specified, your execution directory path\n\
1033 ($PATH) is searched for a command of that name.\n\
1034 No arg means to have no executable file and no symbols.");
1036 add_com("exec-file", class_files
, exec_file_command
,
1037 "Use FILE as program for getting contents of pure memory.\n\
1038 If FILE cannot be found as specified, your execution directory path\n\
1039 is searched for a command of that name.\n\
1040 No arg means have no executable file.");
1042 add_com("section", class_files
, set_section_command
,
1043 "Change the base address of section SECTION of the exec file to ADDR.\n\
1044 This can be used if the exec file does not contain section addresses,\n\
1045 (such as in the a.out format), or when the addresses specified in the\n\
1046 file itself are wrong. Each section must be changed separately. The\n\
1047 ``info files'' command lists all the sections and their addresses.");
1049 add_target(&exec_ops
);