static int
tramp_frame_sniffer (const struct frame_unwind *self,
struct frame_info *next_frame,
void **this_cache)
{
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. */
func = tramp_frame_start (tramp, next_frame, pc);
if (func == 0)
return 0;
tramp_cache = FRAME_OBSTACK_ZALLOC (struct tramp_frame_cache);
tramp_cache->func = func;
tramp_cache->tramp_frame = tramp;
(*this_cache) = tramp_cache;
return 1;
}
static int
tramp_frame_sniffer (const struct frame_unwind *self,
struct frame_info *this_frame,
void **this_cache)
{
const struct tramp_frame *tramp = self->unwind_data->tramp_frame;
CORE_ADDR pc = get_frame_pc (this_frame);
CORE_ADDR func;
struct tramp_frame_cache *tramp_cache;
/* 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, this_frame, pc);
if (func == 0)
return 0;
tramp_cache = FRAME_OBSTACK_ZALLOC (struct tramp_frame_cache);
tramp_cache->func = func;
tramp_cache->tramp_frame = tramp;
(*this_cache) = tramp_cache;
return 1;
}
