int mapped_symbol_files; /* Try to use mapped symbol files */
+/* Locate all mappable sections of a BFD file.
+ objfile_p_char is a char * to get it through
+ bfd_map_over_sections; we cast it back to its proper type. */
+
+static void
+add_to_objfile_sections (abfd, asect, objfile_p_char)
+ bfd *abfd;
+ sec_ptr asect;
+ PTR objfile_p_char;
+{
+ struct objfile *objfile = (struct objfile *) objfile_p_char;
+ struct obj_section section;
+ flagword aflag;
+
+ aflag = bfd_get_section_flags (abfd, asect);
+ /* FIXME, we need to handle BSS segment here...it alloc's but doesn't load */
+ if (!(aflag & SEC_LOAD))
+ return;
+ if (0 == bfd_section_size (abfd, asect))
+ return;
+ section.offset = 0;
+ section.objfile = objfile;
+ section.sec_ptr = asect;
+ section.addr = bfd_section_vma (abfd, asect);
+ section.endaddr = section.addr + bfd_section_size (abfd, asect);
+ obstack_grow (&objfile->psymbol_obstack, §ion, sizeof(section));
+ objfile->sections_end = (struct obj_section *) (((int) objfile->sections_end) + 1);
+}
+
+/* Builds a section table for OBJFILE.
+ Returns 0 if OK, 1 on error. */
+
+static int
+build_objfile_section_table (objfile)
+ struct objfile *objfile;
+{
+ if (objfile->sections)
+ abort();
+
+ objfile->sections_end = 0;
+ bfd_map_over_sections (objfile->obfd, add_to_objfile_sections, (char *)objfile);
+ objfile->sections = (struct obj_section *)
+ obstack_finish (&objfile->psymbol_obstack);
+ objfile->sections_end = objfile->sections + (int) objfile->sections_end;
+ return(0);
+}
+
/* Given a pointer to an initialized bfd (ABFD) and a flag that indicates
whether or not an objfile is to be mapped (MAPPED), allocate a new objfile
struct, fill it in as best we can, link it into the list of all known
objfile -> mmfd = fd;
objfile -> flags |= OBJF_MAPPED;
mmalloc_setkey (objfile -> md, 0, objfile);
- obstack_alloc_arg (&objfile -> psymbol_obstack, objfile -> md);
- obstack_full_begin (&objfile -> psymbol_obstack, 0, 0, xmmalloc,
- mfree);
- obstack_alloc_arg (&objfile -> symbol_obstack, objfile -> md);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0, xmmalloc,
- mfree);
- obstack_alloc_arg (&objfile -> type_obstack, objfile -> md);
- obstack_full_begin (&objfile -> type_obstack, 0, 0, xmmalloc,
- mfree);
+ obstack_specify_allocation_with_arg (&objfile -> psymbol_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile -> md);
+ obstack_specify_allocation_with_arg (&objfile -> symbol_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile -> md);
+ obstack_specify_allocation_with_arg (&objfile -> type_obstack,
+ 0, 0, xmmalloc, mfree,
+ objfile -> md);
}
}
objfile = (struct objfile *) xmalloc (sizeof (struct objfile));
memset (objfile, 0, sizeof (struct objfile));
objfile -> md = NULL;
- obstack_full_begin (&objfile -> psymbol_obstack, 0, 0, xmalloc, free);
- obstack_full_begin (&objfile -> symbol_obstack, 0, 0, xmalloc, free);
- obstack_full_begin (&objfile -> type_obstack, 0, 0, xmalloc, free);
+ obstack_specify_allocation (&objfile -> psymbol_obstack, 0, 0, xmalloc,
+ free);
+ obstack_specify_allocation (&objfile -> symbol_obstack, 0, 0, xmalloc,
+ free);
+ obstack_specify_allocation (&objfile -> type_obstack, 0, 0, xmalloc,
+ free);
}
/* Update the per-objfile information that comes from the bfd, ensuring
objfile -> name = mstrsave (objfile -> md, bfd_get_filename (abfd));
objfile -> mtime = bfd_get_mtime (abfd);
+ /* Build section table. */
+
+ if (build_objfile_section_table (objfile))
+ {
+ error ("Can't find the file sections in `%s': %s",
+ objfile -> name, bfd_errmsg (bfd_error));
+ }
+
/* Push this file onto the head of the linked list of other such files. */
objfile -> next = object_files;
is unknown, but we play it safe for now and keep each action until
it is shown to be no longer needed. */
- clear_symtab_users_once ();
#if defined (CLEAR_SOLIB)
CLEAR_SOLIB ();
#endif
}
-/* Free all the object files at once. */
+/* Free all the object files at once and clean up their users. */
void
free_all_objfiles ()
{
free_objfile (objfile);
}
+ clear_symtab_users ();
}
-
+\f
+/* Relocate OBJFILE to NEW_OFFSETS. There should be OBJFILE->NUM_SECTIONS
+ entries in new_offsets. */
+void
+objfile_relocate (objfile, new_offsets)
+ struct objfile *objfile;
+ struct section_offsets *new_offsets;
+{
+ struct section_offsets *delta = (struct section_offsets *) alloca
+ (sizeof (struct section_offsets)
+ + objfile->num_sections * sizeof (delta->offsets));
+
+ {
+ int i;
+ int something_changed = 0;
+ for (i = 0; i < objfile->num_sections; ++i)
+ {
+ ANOFFSET (delta, i) =
+ ANOFFSET (new_offsets, i) - ANOFFSET (objfile->section_offsets, i);
+ if (ANOFFSET (delta, i) != 0)
+ something_changed = 1;
+ }
+ if (!something_changed)
+ return;
+ }
+
+ /* OK, get all the symtabs. */
+ {
+ struct symtab *s;
+
+ for (s = objfile->symtabs; s; s = s->next)
+ {
+ struct linetable *l;
+ struct blockvector *bv;
+ int i;
+
+ /* First the line table. */
+ l = LINETABLE (s);
+ if (l)
+ {
+ for (i = 0; i < l->nitems; ++i)
+ l->item[i].pc += ANOFFSET (delta, s->block_line_section);
+ }
+
+ /* Don't relocate a shared blockvector more than once. */
+ if (!s->primary)
+ continue;
+
+ bv = BLOCKVECTOR (s);
+ for (i = 0; i < BLOCKVECTOR_NBLOCKS (bv); ++i)
+ {
+ struct block *b;
+ int j;
+
+ b = BLOCKVECTOR_BLOCK (bv, i);
+ BLOCK_START (b) += ANOFFSET (delta, s->block_line_section);
+ BLOCK_END (b) += ANOFFSET (delta, s->block_line_section);
+
+ for (j = 0; j < BLOCK_NSYMS (b); ++j)
+ {
+ struct symbol *sym = BLOCK_SYM (b, j);
+ /* The RS6000 code from which this was taken skipped
+ any symbols in STRUCT_NAMESPACE or UNDEF_NAMESPACE.
+ But I'm leaving out that test, on the theory that
+ they can't possibly pass the tests below. */
+ if ((SYMBOL_CLASS (sym) == LOC_LABEL
+ || SYMBOL_CLASS (sym) == LOC_STATIC)
+ && SYMBOL_SECTION (sym) >= 0)
+ {
+ SYMBOL_VALUE_ADDRESS (sym) +=
+ ANOFFSET (delta, SYMBOL_SECTION (sym));
+ }
+ }
+ }
+ }
+ }
+
+ {
+ struct minimal_symbol *msym;
+ ALL_OBJFILE_MSYMBOLS (objfile, msym)
+ SYMBOL_VALUE_ADDRESS (msym) += ANOFFSET (delta, SYMBOL_SECTION (msym));
+ }
+
+ {
+ int i;
+ for (i = 0; i < objfile->num_sections; ++i)
+ ANOFFSET (objfile->section_offsets, i) = ANOFFSET (new_offsets, i);
+ }
+}
+\f
/* Many places in gdb want to test just to see if we have any partial
symbols available. This function returns zero if none are currently
available, nonzero otherwise. */
{
if (!mapped)
{
- warning ("mapped symbol file `%s' is out of date", symsfilename);
+ warning ("mapped symbol file `%s' is out of date, ignored it",
+ symsfilename);
}
}
else if ((fd = open (symsfilename, O_RDWR)) < 0)
#endif /* !defined(NO_MMALLOC) && defined(HAVE_MMAP) */
+/* Returns a section whose range includes PC or NULL if none found. */
+
+struct obj_section *
+find_pc_section(pc)
+ CORE_ADDR pc;
+{
+ struct obj_section *s;
+ struct objfile *objfile;
+
+ ALL_OBJFILES (objfile)
+ for (s = objfile->sections; s < objfile->sections_end; ++s)
+ if (s->addr <= pc
+ && pc < s->endaddr)
+ return(s);
+
+ return(NULL);
+}
projects / deliverable / binutils-gdb.git / blobdiff