-/* Copy information about text and data sections from LDI to VP for a 64-bit
- process if ARCH64 and for a 32-bit process otherwise. */
-
-static void
-vmap_secs (struct vmap *vp, LdInfo *ldi, int arch64)
-{
- if (arch64)
- {
- vp->tstart = (CORE_ADDR) ldi->l64.ldinfo_textorg;
- vp->tend = vp->tstart + ldi->l64.ldinfo_textsize;
- vp->dstart = (CORE_ADDR) ldi->l64.ldinfo_dataorg;
- vp->dend = vp->dstart + ldi->l64.ldinfo_datasize;
- }
- else
- {
- vp->tstart = (unsigned long) ldi->l32.ldinfo_textorg;
- vp->tend = vp->tstart + ldi->l32.ldinfo_textsize;
- vp->dstart = (unsigned long) ldi->l32.ldinfo_dataorg;
- vp->dend = vp->dstart + ldi->l32.ldinfo_datasize;
- }
-
- /* The run time loader maps the file header in addition to the text
- section and returns a pointer to the header in ldinfo_textorg.
- Adjust the text start address to point to the real start address
- of the text section. */
- vp->tstart += vp->toffs;
-}
-
-/* Handle symbol translation on vmapping. */
-
-static void
-vmap_symtab (struct vmap *vp)
-{
- struct objfile *objfile;
- struct section_offsets *new_offsets;
- int i;
-
- objfile = vp->objfile;
- if (objfile == NULL)
- {
- /* OK, it's not an objfile we opened ourselves.
- Currently, that can only happen with the exec file, so
- relocate the symbols for the symfile. */
- if (symfile_objfile == NULL)
- return;
- objfile = symfile_objfile;
- }
- else if (!vp->loaded)
- /* If symbols are not yet loaded, offsets are not yet valid. */
- return;
-
- new_offsets =
- (struct section_offsets *)
- alloca (SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
-
- for (i = 0; i < objfile->num_sections; ++i)
- new_offsets->offsets[i] = ANOFFSET (objfile->section_offsets, i);
-
- /* The symbols in the object file are linked to the VMA of the section,
- relocate them VMA relative. */
- new_offsets->offsets[SECT_OFF_TEXT (objfile)] = vp->tstart - vp->tvma;
- new_offsets->offsets[SECT_OFF_DATA (objfile)] = vp->dstart - vp->dvma;
- new_offsets->offsets[SECT_OFF_BSS (objfile)] = vp->dstart - vp->dvma;
-
- objfile_relocate (objfile, new_offsets);
-}
-\f
-/* Add symbols for an objfile. */
-
-static int
-objfile_symbol_add (void *arg)
-{
- struct objfile *obj = (struct objfile *) arg;
-
- syms_from_objfile (obj, NULL, 0, 0, 0);
- new_symfile_objfile (obj, 0);
- return 1;
-}
-
-/* Add symbols for a vmap. Return zero upon error. */
-
-int
-vmap_add_symbols (struct vmap *vp)
-{
- if (catch_errors (objfile_symbol_add, vp->objfile,
- "Error while reading shared library symbols:\n",
- RETURN_MASK_ALL))
- {
- /* Note this is only done if symbol reading was successful. */
- vp->loaded = 1;
- vmap_symtab (vp);
- return 1;
- }
- return 0;
-}
-
-/* Add a new vmap entry based on ldinfo() information.
-
- If ldi->ldinfo_fd is not valid (e.g. this struct ld_info is from a
- core file), the caller should set it to -1, and we will open the file.
-
- Return the vmap new entry. */
-
-static struct vmap *
-add_vmap (LdInfo *ldi)
-{
- bfd *abfd, *last;
- char *mem, *objname, *filename;
- struct objfile *obj;
- struct vmap *vp;
- int fd;
- ARCH64_DECL (arch64);
-
- /* This ldi structure was allocated using alloca() in
- xcoff_relocate_symtab(). Now we need to have persistent object
- and member names, so we should save them. */
-
- filename = LDI_FILENAME (ldi, arch64);
- mem = filename + strlen (filename) + 1;
- mem = xstrdup (mem);
- objname = xstrdup (filename);
-
- fd = LDI_FD (ldi, arch64);
- if (fd < 0)
- /* Note that this opens it once for every member; a possible
- enhancement would be to only open it once for every object. */
- abfd = bfd_openr (objname, gnutarget);
- else
- abfd = bfd_fdopenr (objname, gnutarget, fd);
- abfd = gdb_bfd_ref (abfd);
- if (!abfd)
- {
- warning (_("Could not open `%s' as an executable file: %s"),
- objname, bfd_errmsg (bfd_get_error ()));
- return NULL;
- }
-
- /* Make sure we have an object file. */
-
- if (bfd_check_format (abfd, bfd_object))
- vp = map_vmap (abfd, 0);
-
- else if (bfd_check_format (abfd, bfd_archive))
- {
- last = 0;
- /* FIXME??? am I tossing BFDs? bfd? */
- while ((last = gdb_bfd_ref (bfd_openr_next_archived_file (abfd, last))))
- if (strcmp (mem, last->filename) == 0)
- break;
-
- if (!last)
- {
- warning (_("\"%s\": member \"%s\" missing."), objname, mem);
- gdb_bfd_unref (abfd);
- return NULL;
- }
-
- if (!bfd_check_format (last, bfd_object))
- {
- warning (_("\"%s\": member \"%s\" not in executable format: %s."),
- objname, mem, bfd_errmsg (bfd_get_error ()));
- gdb_bfd_unref (last);
- gdb_bfd_unref (abfd);
- return NULL;
- }
-
- vp = map_vmap (last, abfd);
- }
- else
- {
- warning (_("\"%s\": not in executable format: %s."),
- objname, bfd_errmsg (bfd_get_error ()));
- gdb_bfd_unref (abfd);
- return NULL;
- }
- obj = allocate_objfile (gdb_bfd_ref (vp->bfd), 0);
- vp->objfile = obj;
-
- /* Always add symbols for the main objfile. */
- if (vp == vmap || auto_solib_add)
- vmap_add_symbols (vp);
- return vp;
-}
-\f
-/* update VMAP info with ldinfo() information
- Input is ptr to ldinfo() results. */
-
-static void
-vmap_ldinfo (LdInfo *ldi)
-{
- struct stat ii, vi;
- struct vmap *vp;
- int got_one, retried;
- int got_exec_file = 0;
- uint next;
- int arch64 = ARCH64 ();
-
- /* For each *ldi, see if we have a corresponding *vp.
- If so, update the mapping, and symbol table.
- If not, add an entry and symbol table. */
-
- do
- {
- char *name = LDI_FILENAME (ldi, arch64);
- char *memb = name + strlen (name) + 1;
- int fd = LDI_FD (ldi, arch64);
-
- retried = 0;
-
- if (fstat (fd, &ii) < 0)
- {
- /* The kernel sets ld_info to -1, if the process is still using the
- object, and the object is removed. Keep the symbol info for the
- removed object and issue a warning. */
- warning (_("%s (fd=%d) has disappeared, keeping its symbols"),
- name, fd);
- continue;
- }
- retry:
- for (got_one = 0, vp = vmap; vp; vp = vp->nxt)
- {
- struct objfile *objfile;
-
- /* First try to find a `vp', which is the same as in ldinfo.
- If not the same, just continue and grep the next `vp'. If same,
- relocate its tstart, tend, dstart, dend values. If no such `vp'
- found, get out of this for loop, add this ldi entry as a new vmap
- (add_vmap) and come back, find its `vp' and so on... */
-
- /* The filenames are not always sufficient to match on. */
-
- if ((name[0] == '/' && strcmp (name, vp->name) != 0)
- || (memb[0] && strcmp (memb, vp->member) != 0))
- continue;
-
- /* See if we are referring to the same file.
- We have to check objfile->obfd, symfile.c:reread_symbols might
- have updated the obfd after a change. */
- objfile = vp->objfile == NULL ? symfile_objfile : vp->objfile;
- if (objfile == NULL
- || objfile->obfd == NULL
- || bfd_stat (objfile->obfd, &vi) < 0)
- {
- warning (_("Unable to stat %s, keeping its symbols"), name);
- continue;
- }
-
- if (ii.st_dev != vi.st_dev || ii.st_ino != vi.st_ino)
- continue;
-
- if (!retried)
- close (fd);
-
- ++got_one;
-
- /* Found a corresponding VMAP. Remap! */
-
- vmap_secs (vp, ldi, arch64);
-
- /* The objfile is only NULL for the exec file. */
- if (vp->objfile == NULL)
- got_exec_file = 1;
-
- /* relocate symbol table(s). */
- vmap_symtab (vp);
-
- /* Announce new object files. Doing this after symbol relocation
- makes aix-thread.c's job easier. */
- if (vp->objfile)
- observer_notify_new_objfile (vp->objfile);
-
- /* There may be more, so we don't break out of the loop. */
- }
-
- /* If there was no matching *vp, we must perforce create the
- sucker(s). */
- if (!got_one && !retried)
- {
- add_vmap (ldi);
- ++retried;
- goto retry;
- }
- }
- while ((next = LDI_NEXT (ldi, arch64))
- && (ldi = (void *) (next + (char *) ldi)));
-
- /* If we don't find the symfile_objfile anywhere in the ldinfo, it
- is unlikely that the symbol file is relocated to the proper
- address. And we might have attached to a process which is
- running a different copy of the same executable. */
- if (symfile_objfile != NULL && !got_exec_file)
- {
- warning (_("Symbol file %s\nis not mapped; discarding it.\n\
-If in fact that file has symbols which the mapped files listed by\n\
-\"info files\" lack, you can load symbols with the \"symbol-file\" or\n\
-\"add-symbol-file\" commands (note that you must take care of relocating\n\
-symbols to the proper address)."),
- symfile_objfile->name);
- free_objfile (symfile_objfile);
- gdb_assert (symfile_objfile == NULL);
- }
- breakpoint_re_set ();
-}
-\f
-/* As well as symbol tables, exec_sections need relocation. After
- the inferior process' termination, there will be a relocated symbol
- table exist with no corresponding inferior process. At that time, we
- need to use `exec' bfd, rather than the inferior process's memory space
- to look up symbols.
-
- `exec_sections' need to be relocated only once, as long as the exec
- file remains unchanged. */
-
-static void
-vmap_exec (void)
-{
- static bfd *execbfd;
- int i;
- struct target_section_table *table = target_get_section_table (&exec_ops);
-
- if (execbfd == exec_bfd)
- return;
-
- execbfd = exec_bfd;
-
- if (!vmap || !table->sections)
- error (_("vmap_exec: vmap or table->sections == 0."));
-
- for (i = 0; &table->sections[i] < table->sections_end; i++)
- {
- if (strcmp (".text", table->sections[i].the_bfd_section->name) == 0)
- {
- table->sections[i].addr += vmap->tstart - vmap->tvma;
- table->sections[i].endaddr += vmap->tstart - vmap->tvma;
- }
- else if (strcmp (".data", table->sections[i].the_bfd_section->name) == 0)
- {
- table->sections[i].addr += vmap->dstart - vmap->dvma;
- table->sections[i].endaddr += vmap->dstart - vmap->dvma;
- }
- else if (strcmp (".bss", table->sections[i].the_bfd_section->name) == 0)
- {
- table->sections[i].addr += vmap->dstart - vmap->dvma;
- table->sections[i].endaddr += vmap->dstart - vmap->dvma;
- }
- }
-}
-