diff options
Diffstat (limited to 'gdb/paread.c')
| -rw-r--r-- | gdb/paread.c | 57 |
1 files changed, 43 insertions, 14 deletions
diff --git a/gdb/paread.c b/gdb/paread.c index afab674..46a6e3d 100644 --- a/gdb/paread.c +++ b/gdb/paread.c @@ -18,20 +18,6 @@ You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ -/************************************************************************ - * * - * NOTICE * - * * - * This file is still under construction. When it is complete, this * - * notice will be removed. Until then, direct any questions or changes * - * to Fred Fish at Cygnus Support (fnf@cygnus.com) * - * * - * FIXME Still needs support for shared libraries. * - * FIXME Still needs support for core files. * - * FIXME The ".debug" and ".line" section names are hardwired. * - * * - ************************************************************************/ - #include "defs.h" #include "bfd.h" #include "libbfd.h" @@ -57,6 +43,9 @@ static void pa_new_init PARAMS ((struct objfile *)); static void +read_unwind_info PARAMS ((struct objfile *)); + +static void pa_symfile_read PARAMS ((struct objfile *, struct section_offsets *, int)); static void @@ -174,6 +163,44 @@ pa_symtab_read (abfd, addr, objfile) install_minimal_symbols (objfile); } +/* Read in the backtrace information stored in the `$UNWIND_START$' section of + the object file. This info is used mainly by find_unwind_entry() to find + out the stack frame size and frame pointer used by procedures. We put + everything on the psymbol obstack in the objfile so that it automatically + gets freed when the objfile is destroyed. */ + +static void +read_unwind_info (objfile) + struct objfile *objfile; +{ + asection *unwind_sec; + struct obj_unwind_info *ui; + + ui = obstack_alloc (&objfile->psymbol_obstack, + sizeof (struct obj_unwind_info)); + + ui->table = NULL; + ui->cache = NULL; + ui->last = -1; + + unwind_sec = bfd_get_section_by_name (objfile->obfd, + "$UNWIND_START$"); + if (unwind_sec) + { + int size; + int i, *ip; + + size = bfd_section_size (objfile->obfd, unwind_sec); + ui->table = obstack_alloc (&objfile->psymbol_obstack, size); + ui->last = size / sizeof (struct unwind_table_entry) - 1; + + bfd_get_section_contents (objfile->obfd, unwind_sec, ui->table, + 0, size); + + OBJ_UNWIND_INFO (objfile) = ui; + } +} + /* Scan and build partial symbols for a symbol file. We have been initialized by a call to pa_symfile_init, which currently does nothing. @@ -230,6 +257,8 @@ pa_symfile_read (objfile, section_offsets, mainline) pastab_build_psymtabs (objfile, section_offsets, mainline); + read_unwind_info(objfile); + do_cleanups (back_to); } |