static void
som_symfile_read (struct objfile *objfile, int symfile_flags)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
/* Process the normal SOM symbol table first.
This reads in the DNTT and string table, but doesn't
actually scan the DNTT. It does scan the linker symbol
table and thus build up a "minimal symbol table". */
som_symtab_read (abfd, objfile, objfile->section_offsets);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile.
Further symbol-reading is done incrementally, file-by-file,
in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
contains the code to do the actual DNTT scanning and symtab building. */
install_minimal_symbols (objfile);
do_cleanups (back_to);
/* Now read information from the stabs debug sections.
This is emitted by gcc. */
stabsect_build_psymtabs (objfile,
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
}
static void
mipscoff_symfile_read (struct objfile *objfile, int symfile_flags)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
/* Now that the executable file is positioned at symbol table,
process it and define symbols accordingly. */
if (!((*ecoff_backend (abfd)->debug_swap.read_debug_info)
(abfd, (asection *) NULL, &ecoff_data (abfd)->debug_info)))
error (_("Error reading symbol table: %s"), bfd_errmsg (bfd_get_error ()));
mdebug_build_psymtabs (objfile, &ecoff_backend (abfd)->debug_swap,
&ecoff_data (abfd)->debug_info);
/* Add alpha coff dynamic symbols. */
read_alphacoff_dynamic_symtab (objfile->section_offsets, objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
do_cleanups (back_to);
}
static void
som_symfile_read (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
do_pxdb (symfile_bfd_open (objfile->name));
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
/* Read in the import list and the export list. Currently
the export list isn't used; the import list is used in
hp-symtab-read.c to handle static vars declared in other
shared libraries. */
init_import_symbols (objfile);
#if 0 /* Export symbols not used today 1997-08-05 */
init_export_symbols (objfile);
#else
objfile->export_list = NULL;
objfile->export_list_size = 0;
#endif
/* Process the normal SOM symbol table first.
This reads in the DNTT and string table, but doesn't
actually scan the DNTT. It does scan the linker symbol
table and thus build up a "minimal symbol table". */
som_symtab_read (abfd, objfile, objfile->section_offsets);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile.
Further symbol-reading is done incrementally, file-by-file,
in a step known as "psymtab-to-symtab" expansion. hp-symtab-read.c
contains the code to do the actual DNTT scanning and symtab building. */
install_minimal_symbols (objfile);
do_cleanups (back_to);
/* Now read information from the stabs debug sections.
This is a no-op for SOM.
Perhaps it is intended for some kind of mixed STABS/SOM
situation? */
stabsect_build_psymtabs (objfile, mainline,
"$GDB_SYMBOLS$", "$GDB_STRINGS$", "$TEXT$");
/* Now read the native debug information.
This builds the psymtab. This used to be done via a scan of
the DNTT, but is now done via the PXDB-built quick-lookup tables
together with a scan of the GNTT. See hp-psymtab-read.c. */
hpread_build_psymtabs (objfile, mainline);
/* Force hppa-tdep.c to re-read the unwind descriptors. */
objfile->obj_private = NULL;
}
static void
nlm_symfile_read (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
struct cleanup *back_to;
CORE_ADDR offset;
struct symbol *mainsym;
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
/* FIXME, should take a section_offsets param, not just an offset. */
offset = ANOFFSET (objfile->section_offsets, 0);
/* Process the NLM export records, which become the bfd's canonical symbol
table. */
nlm_symtab_read (abfd, offset, objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
do_cleanups (back_to);
stabsect_build_psymtabs (objfile, mainline, ".stab",
".stabstr", ".text");
mainsym = lookup_symbol (main_name (), NULL, VAR_DOMAIN, NULL, NULL);
if (mainsym
&& SYMBOL_CLASS (mainsym) == LOC_BLOCK)
{
objfile->ei.main_func_lowpc = BLOCK_START (SYMBOL_BLOCK_VALUE (mainsym));
objfile->ei.main_func_highpc = BLOCK_END (SYMBOL_BLOCK_VALUE (mainsym));
}
/* FIXME: We could locate and read the optional native debugging format
here and add the symbols to the minimal symbol table. */
}
static void
elf_symfile_read (struct objfile *objfile, int mainline)
{
bfd *abfd = objfile->obfd;
struct elfinfo ei;
struct cleanup *back_to;
CORE_ADDR offset;
init_minimal_symbol_collection ();
back_to = make_cleanup_discard_minimal_symbols ();
memset ((char *) &ei, 0, sizeof (ei));
/* Allocate struct to keep track of the symfile */
objfile->sym_stab_info = (struct dbx_symfile_info *)
xmmalloc (objfile->md, sizeof (struct dbx_symfile_info));
memset ((char *) objfile->sym_stab_info, 0, sizeof (struct dbx_symfile_info));
make_cleanup (free_elfinfo, (void *) objfile);
/* Process the normal ELF symbol table first. This may write some
chain of info into the dbx_symfile_info in objfile->sym_stab_info,
which can later be used by elfstab_offset_sections. */
elf_symtab_read (objfile, 0);
/* Add the dynamic symbols. */
elf_symtab_read (objfile, 1);
/* Now process debugging information, which is contained in
special ELF sections. */
/* If we are reinitializing, or if we have never loaded syms yet,
set table to empty. MAINLINE is cleared so that *_read_psymtab
functions do not all also re-initialize the psymbol table. */
if (mainline)
{
init_psymbol_list (objfile, 0);
mainline = 0;
}
/* We first have to find them... */
bfd_map_over_sections (abfd, elf_locate_sections, (void *) & ei);
/* ELF debugging information is inserted into the psymtab in the
order of least informative first - most informative last. Since
the psymtab table is searched `most recent insertion first' this
increases the probability that more detailed debug information
for a section is found.
For instance, an object file might contain both .mdebug (XCOFF)
and .debug_info (DWARF2) sections then .mdebug is inserted first
(searched last) and DWARF2 is inserted last (searched first). If
we don't do this then the XCOFF info is found first - for code in
an included file XCOFF info is useless. */
if (ei.mdebugsect)
{
const struct ecoff_debug_swap *swap;
/* .mdebug section, presumably holding ECOFF debugging
information. */
swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap;
if (swap)
elfmdebug_build_psymtabs (objfile, swap, ei.mdebugsect);
}
if (ei.stabsect)
{
asection *str_sect;
/* Stab sections have an associated string table that looks like
a separate section. */
str_sect = bfd_get_section_by_name (abfd, ".stabstr");
/* FIXME should probably warn about a stab section without a stabstr. */
if (str_sect)
elfstab_build_psymtabs (objfile,
mainline,
ei.stabsect->filepos,
bfd_section_size (abfd, ei.stabsect),
str_sect->filepos,
bfd_section_size (abfd, str_sect));
}
if (dwarf2_has_info (abfd))
{
/* DWARF 2 sections */
dwarf2_build_psymtabs (objfile, mainline);
}
else if (ei.dboffset && ei.lnoffset)
{
/* DWARF sections */
dwarf_build_psymtabs (objfile,
mainline,
ei.dboffset, ei.dbsize,
ei.lnoffset, ei.lnsize);
}
if (DWARF2_BUILD_FRAME_INFO_P ())
DWARF2_BUILD_FRAME_INFO(objfile);
/* Install any minimal symbols that have been collected as the current
minimal symbols for this objfile. */
install_minimal_symbols (objfile);
do_cleanups (back_to);
}
