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 now
,
345 we don
't have to load them as default anymore.
347 syms_from_objfile (obj, 0, 0, 0);
351 /* find the end of the list, and append. */
352 for (vpp = &vmap; *vpp; vpp = &(*vpp)->nxt)
358 #define FASTER_MSYMBOL_RELOCATION 1
360 #ifdef FASTER_MSYMBOL_RELOCATION
362 /* Used to relocate an object file's minimal symbols
. */
365 reloc_objfile_msymbols (objf
, addr
)
366 struct objfile
*objf
;
369 register struct minimal_symbol
*msymbol
;
372 for (msymbol
= objf
->msymbols
, ii
=0;
373 msymbol
&& ii
< objf
->minimal_symbol_count
; ++msymbol
, ++ii
)
375 if (msymbol
->address
< TEXT_SEGMENT_BASE
)
376 msymbol
->address
+= addr
;
379 #else /* !FASTER_MSYMBOL_RELOCATION */
381 /* Called via iterate_over_msymbols to relocate minimal symbols */
384 relocate_minimal_symbol (objfile
, msymbol
, arg1
, arg2
, arg3
)
385 struct objfile
*objfile
;
386 struct minimal_symbol
*msymbol
;
391 if (msymbol
->address
< TEXT_SEGMENT_BASE
)
392 msymbol
-> address
+= (int) arg1
;
394 /* return 0, otherwise `iterate_over_msymbols()' will stop at the
398 #endif /* FASTER_MSYMBOL_RELOCATION */
400 /* true, if symbol table and minimal symbol table are relocated. */
402 int symtab_relocated
= 0;
405 /* vmap_symtab - handle symbol translation on vmapping */
407 vmap_symtab(vp
, old_start
, vip
)
408 register struct vmap
*vp
;
412 register struct symtab
*s
;
413 register struct objfile
*objfile
;
416 * for each symbol table generated from the vp->bfd
418 for (objfile
= object_files
; objfile
!= NULL
; objfile
= objfile
-> next
)
420 for (s
= objfile
-> symtabs
; s
!= NULL
; s
= s
-> next
) {
422 /* skip over if this is not relocatable and doesn't have a line table */
423 if (s
->nonreloc
&& !LINETABLE (s
))
426 /* matching the symbol table's BFD and the *vp's BFD is hairy.
427 exec_file creates a seperate BFD for possibly the
428 same file as symbol_file.FIXME ALL THIS MUST BE RECTIFIED. */
430 if (objfile
->obfd
== vp
->bfd
) {
431 /* if they match, we luck out. */
433 } else if (vp
->member
[0]) {
434 /* no match, and member present, not this one. */
441 * no match, and no member. need to be sure.
443 io
= bfd_cache_lookup(objfile
->obfd
);
445 fatal("cannot find BFD's iostream for sym");
447 * see if we are referring to the same file
449 if (fstat(fileno(io
), &si
) < 0)
450 fatal("cannot fstat BFD for sym");
452 if (vip
&& (si
.st_dev
!= vip
->st_dev
453 || si
.st_ino
!= vip
->st_ino
))
457 if (vp
->tstart
!= old_start
) {
459 /* Once we find a relocation base address for one of the symtabs
460 in this objfile, it will be the same for all symtabs in this
461 objfile. Clean this algorithm. FIXME. */
463 for (; s
; s
= s
->next
)
464 if (!s
->nonreloc
|| LINETABLE(s
))
465 vmap_symtab_1(s
, vp
, old_start
);
467 #ifdef FASTER_MSYMBOL_RELOCATION
468 /* we can rely on the fact that at least one symtab in this objfile
469 will get relocated. Thus, we can be sure that minimal symbol
470 vector is guaranteed for relocation. */
472 reloc_objfile_msymbols (objfile
, vp
->tstart
- old_start
);
479 if (vp
->tstart
!= old_start
) {
480 #ifndef FASTER_MSYMBOL_RELOCATION
481 (void) iterate_over_msymbols (relocate_minimal_symbol
,
482 (PTR
) (vp
->tstart
- old_start
),
483 (PTR
) NULL
, (PTR
) NULL
);
486 /* breakpoints need to be relocated as well. */
487 fixup_breakpoints (0, TEXT_SEGMENT_BASE
, vp
->tstart
- old_start
);
490 symtab_relocated
= 1;
494 vmap_symtab_1(s
, vp
, old_start
)
495 register struct symtab
*s
;
496 register struct vmap
*vp
;
501 register struct linetable
*l
;
502 struct blockvector
*bv
;
503 register struct block
*b
;
505 register ulong reloc
, dreloc
;
507 if ((reloc
= vp
->tstart
- old_start
) == 0)
510 dreloc
= vp
->dstart
; /* data relocation */
513 * The line table must be relocated. This is only present for
514 * .text sections, so only vp->text type maps need be considered.
519 for (i
= 0; i
< len
; i
++)
520 l
->item
[i
].pc
+= reloc
;
523 /* if this symbol table is not relocatable, only line table should
524 be relocated and the rest ignored. */
529 len
= BLOCKVECTOR_NBLOCKS(bv
);
531 for (i
= 0; i
< len
; i
++) {
532 b
= BLOCKVECTOR_BLOCK(bv
, i
);
534 BLOCK_START(b
) += reloc
;
535 BLOCK_END(b
) += reloc
;
537 blen
= BLOCK_NSYMS(b
);
538 for (j
= 0; j
< blen
; j
++) {
539 register struct symbol
*sym
;
541 sym
= BLOCK_SYM(b
, j
);
542 switch (SYMBOL_NAMESPACE(sym
)) {
543 case STRUCT_NAMESPACE
:
544 case UNDEF_NAMESPACE
:
547 case LABEL_NAMESPACE
:
552 switch (SYMBOL_CLASS(sym
)) {
554 case LOC_CONST_BYTES
:
568 SYMBOL_VALUE_ADDRESS(sym
) += reloc
;
572 SYMBOL_VALUE_ADDRESS(sym
) += dreloc
;
579 fatal("botched symbol class %x"
580 , SYMBOL_CLASS(sym
));
588 * add_vmap - add a new vmap entry based on ldinfo() information
591 register struct ld_info
*ldi
; {
593 register char *mem
, *objname
;
595 /* This ldi structure was allocated using alloca() in
596 aixcoff_relocate_symtab(). Now we need to have persistent object
597 and member names, so we should save them. */
599 mem
= ldi
->ldinfo_filename
+ strlen(ldi
->ldinfo_filename
) + 1;
600 mem
= savestring (mem
, strlen (mem
));
601 objname
= savestring (ldi
->ldinfo_filename
, strlen (ldi
->ldinfo_filename
));
603 bfd
= bfd_fdopenr(objname
, NULL
, ldi
->ldinfo_fd
);
605 error("Could not open `%s' as an executable file: %s",
606 objname
, bfd_errmsg(bfd_error
));
609 /* make sure we have an object file */
611 if (bfd_check_format(bfd
, bfd_object
))
614 else if (bfd_check_format(bfd
, bfd_archive
)) {
617 * FIXME??? am I tossing BFDs? bfd?
619 while (last
= bfd_openr_next_archived_file(bfd
, last
))
620 if (eq(mem
, last
->filename
))
625 /* FIXME -- should be error */
626 warning("\"%s\": member \"%s\" missing.", bfd
->filename
, mem
);
630 if (!bfd_check_format(last
, bfd_object
)) {
631 bfd_close(last
); /* XXX??? */
635 map_vmap (last
, bfd
);
640 /* FIXME -- should be error */
641 warning("\"%s\": not in executable format: %s."
642 , objname
, bfd_errmsg(bfd_error
));
648 /* As well as symbol tables, exec_sections need relocation. After
649 the inferior process' termination, there will be a relocated symbol
650 table exist with no corresponding inferior process. At that time, we
651 need to use `exec' bfd, rather than the inferior process's memory space
654 `exec_sections' need to be relocated only once, as long as the exec
655 file remains unchanged.
660 if (execbfd
== exec_bfd
)
665 /* First exec section is `.text', second is `.data'. If this is changed,
666 then this routine will choke. */
668 if (!vmap
|| !exec_ops
.to_sections
||
669 strcmp (exec_ops
.to_sections
[0].sec_ptr
->name
, ".text") ||
670 strcmp (exec_ops
.to_sections
[1].sec_ptr
->name
, ".data"))
672 fatal ("aix: Improper exec_ops sections.");
674 exec_ops
.to_sections
[0].addr
+= vmap
->tstart
;
675 exec_ops
.to_sections
[0].endaddr
+= vmap
->tstart
;
676 exec_ops
.to_sections
[1].addr
+= vmap
->dstart
;
677 exec_ops
.to_sections
[1].endaddr
+= vmap
->dstart
;
682 text_adjustment (abfd
)
686 static int adjustment
;
689 if (exec_bfd
== execbfd
)
692 sect
= bfd_get_section_by_name (abfd
, ".text");
694 adjustment
= sect
->filepos
- sect
->vma
;
696 adjustment
= 0x200; /* just a wild assumption */
703 * vmap_ldinfo - update VMAP info with ldinfo() information
706 * ldi - ^ to ldinfo() results.
709 register struct ld_info
*ldi
;
712 register struct vmap
*vp
;
713 register got_one
, retried
;
717 * for each *ldi, see if we have a corresponding *vp
718 * if so, update the mapping, and symbol table.
719 * if not, add an entry and symbol table.
722 char *name
= ldi
->ldinfo_filename
;
723 char *memb
= name
+ strlen(name
) + 1;
727 if (fstat(ldi
->ldinfo_fd
, &ii
) < 0)
728 fatal("cannot fstat(%d) on %s"
732 for (got_one
= 0, vp
= vmap
; vp
; vp
= vp
->nxt
) {
735 /* First try to find a `vp', which is the same as in ldinfo.
736 If not the same, just continue and grep the next `vp'. If same,
737 relocate its tstart, tend, dstart, dend values. If no such `vp'
738 found, get out of this for loop, add this ldi entry as a new vmap
739 (add_vmap) and come back, fins its `vp' and so on... */
741 /* The filenames are not always sufficient to match on. */
743 if ((name
[0] == "/" && !eq(name
, vp
->name
))
744 || (memb
[0] && !eq(memb
, vp
->member
)))
747 io
= bfd_cache_lookup(vp
->bfd
); /* totally opaque! */
749 fatal("cannot find BFD's iostream for %s", vp
->name
);
751 /* see if we are referring to the same file */
753 if (fstat(fileno(io
), &vi
) < 0)
754 fatal("cannot fstat BFD for %s", vp
->name
);
756 if (ii
.st_dev
!= vi
.st_dev
|| ii
.st_ino
!= vi
.st_ino
)
760 close(ldi
->ldinfo_fd
);
764 /* found a corresponding VMAP. remap! */
767 vp
->tstart
= ldi
->ldinfo_textorg
;
768 vp
->tend
= vp
->tstart
+ ldi
->ldinfo_textsize
;
769 vp
->dstart
= ldi
->ldinfo_dataorg
;
770 vp
->dend
= vp
->dstart
+ ldi
->ldinfo_datasize
;
773 vp
->tstart
+= vp
->tadj
;
774 vp
->tend
+= vp
->tadj
;
777 /* relocate symbol table(s). */
778 vmap_symtab(vp
, ostart
, &vi
);
780 /* there may be more, so we don't break out of the loop. */
783 /* if there was no matching *vp, we must perforce create the sucker(s) */
784 if (!got_one
&& !retried
) {
789 } while (ldi
->ldinfo_next
790 && (ldi
= (void *) (ldi
->ldinfo_next
+ (char *) ldi
)));
795 * vmap_inferior - print VMAP info for inferior
799 if (inferior_pid
== 0)
800 return 0; /* normal processing */
806 /* Read or write the exec file.
808 Args are address within exec file, address within gdb address-space,
809 length, and a flag indicating whether to read or write.
813 0: We cannot handle this address and length.
814 > 0: We have handled N bytes starting at this address.
815 (If N == length, we did it all.) We might be able
816 to handle more bytes beyond this length, but no
818 < 0: We cannot handle this address, but if somebody
819 else handles (-N) bytes, we can start from there.
821 The same routine is used to handle both core and exec files;
822 we just tail-call it with more arguments to select between them. */
825 xfer_memory (memaddr
, myaddr
, len
, write
, target
)
830 struct target_ops
*target
;
833 struct section_table
*p
;
834 CORE_ADDR nextsectaddr
, memend
;
835 boolean (*xfer_fn
) PARAMS ((bfd
*, sec_ptr
, PTR
, file_ptr
, bfd_size_type
));
840 memend
= memaddr
+ len
;
841 xfer_fn
= write
? bfd_set_section_contents
: bfd_get_section_contents
;
842 nextsectaddr
= memend
;
844 for (p
= target
->to_sections
; p
< target
->to_sections_end
; p
++)
846 if (p
->addr
<= memaddr
)
847 if (p
->endaddr
>= memend
)
849 /* Entire transfer is within this section. */
850 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
851 return (res
!= false)? len
: 0;
853 else if (p
->endaddr
<= memaddr
)
855 /* This section ends before the transfer starts. */
860 /* This section overlaps the transfer. Just do half. */
861 len
= p
->endaddr
- memaddr
;
862 res
= xfer_fn (p
->bfd
, p
->sec_ptr
, myaddr
, memaddr
- p
->addr
, len
);
863 return (res
!= false)? len
: 0;
865 else if (p
->addr
< nextsectaddr
)
866 nextsectaddr
= p
->addr
;
869 if (nextsectaddr
>= memend
)
870 return 0; /* We can't help */
872 return - (nextsectaddr
- memaddr
); /* Next boundary where we can help */
876 print_section_info (t
, abfd
)
877 struct target_ops
*t
;
880 struct section_table
*p
;
882 printf_filtered ("\t`%s', ", bfd_get_filename(abfd
));
884 printf_filtered ("file type %s.\n", bfd_get_target(abfd
));
886 for (p
= t
->to_sections
; p
< t
->to_sections_end
; p
++) {
887 printf_filtered ("\t%s", local_hex_string_custom (p
->addr
, "08"));
888 printf_filtered (" - %s", local_hex_string_custom (p
->endaddr
, "08"));
890 printf_filtered (" @ %s",
891 local_hex_string_custom (p
->sec_ptr
->filepos
, "08"));
892 printf_filtered (" is %s", bfd_section_name (p
->bfd
, p
->sec_ptr
));
893 if (p
->bfd
!= abfd
) {
894 printf_filtered (" in %s", bfd_get_filename (p
->bfd
));
896 printf_filtered ("\n");
903 struct target_ops
*t
;
905 register struct vmap
*vp
= vmap
;
907 print_section_info (t
, exec_bfd
);
912 printf("\tMapping info for file `%s'.\n", vp
->name
);
914 printf("\t %8.8s %8.8s %8.8s %8.8s %8.8s %s\n",
915 "tstart", "tend", "dstart", "dend", "section", "file(member)");
917 for (; vp
; vp
= vp
->nxt
)
918 printf("\t0x%8.8x 0x%8.8x 0x%8.8x 0x%8.8x %s%s%s%s\n",
924 *vp
->member
? "(" : "",
926 *vp
->member
? ")" : "");
930 /* Damon's implementation of set_section_command! It is based on the sex member
931 (which is a section pointer from vmap) of vmap.
932 We will not have multiple vmap entries (one for each section), rather transmit
933 text and data base offsets and fix them at the same time. Elimination of sex
934 entry in vmap make this function obsolute, use the one from exec.c.
935 Need further testing!! FIXMEmgo. */
938 set_section_command(args
, from_tty
)
941 register struct vmap
*vp
= vmap
;
944 unsigned long secaddr
;
949 error("Must specify section name and its virtual address");
951 /* Parse out section name */
952 for (secname
= args
; !isspace(*args
); args
++)
954 seclen
= args
- secname
;
956 /* Parse out new virtual address */
957 secaddr
= parse_and_eval_address(args
);
959 for (vp
= vmap
; vp
; vp
= vp
->nxt
) {
961 , bfd_section_name(vp
->bfd
, vp
->sex
), seclen
)
962 && bfd_section_name(vp
->bfd
, vp
->sex
)[seclen
] == '\0') {
963 offset
= secaddr
- vp
->tstart
;
964 vp
->tstart
+= offset
;
971 if (seclen
>= sizeof(secprint
))
972 seclen
= sizeof(secprint
) - 1;
973 strncpy(secprint
, secname
, seclen
);
974 secprint
[seclen
] = '\0';
975 error("Section %s not found", secprint
);
979 set_section_command (args
, from_tty
)
983 struct section_table
*p
;
986 unsigned long secaddr
;
991 error ("Must specify section name and its virtual address");
993 /* Parse out section name */
994 for (secname
= args
; !isspace(*args
); args
++) ;
995 seclen
= args
- secname
;
997 /* Parse out new virtual address */
998 secaddr
= parse_and_eval_address (args
);
1000 for (p
= exec_ops
.to_sections
; p
< exec_ops
.to_sections_end
; p
++) {
1001 if (!strncmp (secname
, bfd_section_name (exec_bfd
, p
->sec_ptr
), seclen
)
1002 && bfd_section_name (exec_bfd
, p
->sec_ptr
)[seclen
] == '\0') {
1003 offset
= secaddr
- p
->addr
;
1005 p
->endaddr
+= offset
;
1007 exec_files_info(&exec_ops
);
1011 if (seclen
>= sizeof (secprint
))
1012 seclen
= sizeof (secprint
) - 1;
1013 strncpy (secprint
, secname
, seclen
);
1014 secprint
[seclen
] = '\0';
1015 error ("Section %s not found", secprint
);
1020 struct target_ops exec_ops
= {
1021 "exec", "Local exec file",
1022 "Use an executable file as a target.\n\
1023 Specify the filename of the executable file.",
1024 exec_file_command
, exec_close
, /* open, close */
1025 child_attach
, 0, 0, 0, /* attach, detach, resume, wait, */
1026 0, 0, /* fetch_registers, store_registers, */
1027 0, 0, 0, /* prepare_to_store, conv_to, conv_from, */
1028 xfer_memory
, exec_files_info
,
1029 0, 0, /* insert_breakpoint, remove_breakpoint, */
1030 0, 0, 0, 0, 0, /* terminal stuff */
1031 0, 0, /* kill, load */
1033 child_create_inferior
,
1034 0, /* mourn_inferior */
1035 file_stratum
, 0, /* next */
1036 0, 1, 0, 0, 0, /* all mem, mem, stack, regs, exec */
1037 0, 0, /* section pointers */
1038 OPS_MAGIC
, /* Always the last thing */
1046 add_com("file", class_files
, file_command
,
1047 "Use FILE as program to be debugged.\n\
1048 It is read for its symbols, for getting the contents of pure memory,\n\
1049 and it is the program executed when you use the `run' command.\n\
1050 If FILE cannot be found as specified, your execution directory path\n\
1051 ($PATH) is searched for a command of that name.\n\
1052 No arg means to have no executable file and no symbols.");
1054 add_com("exec-file", class_files
, exec_file_command
,
1055 "Use FILE as program for getting contents of pure memory.\n\
1056 If FILE cannot be found as specified, your execution directory path\n\
1057 is searched for a command of that name.\n\
1058 No arg means have no executable file.");
1060 add_com("section", class_files
, set_section_command
,
1061 "Change the base address of section SECTION of the exec file to ADDR.\n\
1062 This can be used if the exec file does not contain section addresses,\n\
1063 (such as in the a.out format), or when the addresses specified in the\n\
1064 file itself are wrong. Each section must be changed separately. The\n\
1065 ``info files'' command lists all the sections and their addresses.");
1067 add_target(&exec_ops
);