/* Signal trampoline unwinder, for GDB the GNU Debugger.
- Copyright 2004 Free Software Foundation, Inc.
+ Copyright (C) 2004 Free Software Foundation, Inc.
This file is part of GDB.
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., 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
+ Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ Boston, MA 02110-1301, USA. */
#include "defs.h"
#include "tramp-frame.h"
int *optimizedp,
enum lval_type * lvalp,
CORE_ADDR *addrp,
- int *realnump, void *valuep)
+ int *realnump, gdb_byte *valuep)
{
struct trad_frame_cache *trad_cache
= tramp_frame_cache (next_frame, this_cache);
int ti;
/* Search through the trampoline for one that matches the
instruction sequence around PC. */
- for (ti = 0; tramp->insn[ti] != TRAMP_SENTINEL_INSN; ti++)
+ for (ti = 0; tramp->insn[ti].bytes != TRAMP_SENTINEL_INSN; ti++)
{
CORE_ADDR func = pc - tramp->insn_size * ti;
int i;
for (i = 0; 1; i++)
{
- bfd_byte buf[sizeof (tramp->insn[0])];
+ gdb_byte buf[sizeof (tramp->insn[0])];
ULONGEST insn;
- if (tramp->insn[i] == TRAMP_SENTINEL_INSN)
+ if (tramp->insn[i].bytes == TRAMP_SENTINEL_INSN)
return func;
if (!safe_frame_unwind_memory (next_frame,
func + i * tramp->insn_size,
buf, tramp->insn_size))
break;
insn = extract_unsigned_integer (buf, tramp->insn_size);
- if (tramp->insn[i] != insn)
+ if (tramp->insn[i].bytes != (insn & tramp->insn[i].mask))
break;
}
}
const struct tramp_frame *tramp = self->unwind_data->tramp_frame;
CORE_ADDR pc = frame_pc_unwind (next_frame);
CORE_ADDR func;
- char *name;
struct tramp_frame_cache *tramp_cache;
- /* If the function has a valid symbol name, it isn't a
- trampoline. */
- find_pc_partial_function (pc, &name, NULL, NULL);
- if (name != NULL)
- return 0;
- /* If the function lives in a valid section (even without a starting
- point) it isn't a trampoline. */
- if (find_pc_section (pc) != NULL)
- return 0;
- /* Finally, check that the trampoline matches at PC. */
+ /* tausq/2004-12-12: We used to assume if pc has a name or is in a valid
+ section, then this is not a trampoline. However, this assumption is
+ false on HPUX which has a signal trampoline that has a name; it can
+ also be false when using an alternative signal stack. */
func = tramp_frame_start (tramp, next_frame, pc);
if (func == 0)
return 0;
}
void
-tramp_frame_append (struct gdbarch *gdbarch,
- const struct tramp_frame *tramp_frame)
+tramp_frame_prepend_unwinder (struct gdbarch *gdbarch,
+ const struct tramp_frame *tramp_frame)
{
struct frame_data *data;
struct frame_unwind *unwinder;
/* Check that the instruction sequence contains a sentinel. */
for (i = 0; i < ARRAY_SIZE (tramp_frame->insn); i++)
{
- if (tramp_frame->insn[i] == TRAMP_SENTINEL_INSN)
+ if (tramp_frame->insn[i].bytes == TRAMP_SENTINEL_INSN)
break;
}
gdb_assert (i < ARRAY_SIZE (tramp_frame->insn));
- gdb_assert (tramp_frame->insn_size <= sizeof (tramp_frame->insn[0]));
+ gdb_assert (tramp_frame->insn_size <= sizeof (tramp_frame->insn[0].bytes));
data = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_data);
unwinder = GDBARCH_OBSTACK_ZALLOC (gdbarch, struct frame_unwind);
data->tramp_frame = tramp_frame;
- unwinder->type = SIGTRAMP_FRAME;
+ unwinder->type = tramp_frame->frame_type;
unwinder->unwind_data = data;
unwinder->sniffer = tramp_frame_sniffer;
unwinder->this_id = tramp_frame_this_id;
unwinder->prev_register = tramp_frame_prev_register;
- frame_unwind_register_unwinder (gdbarch, unwinder);
+ frame_unwind_prepend_unwinder (gdbarch, unwinder);
}