/* The function finds the saved locations and applies the register
state as well. */
HIDDEN int
dwarf_find_save_locs (struct dwarf_cursor *c)
{
dwarf_state_record_t sr;
dwarf_reg_state_t *rs, rs_copy;
struct dwarf_rs_cache *cache;
int ret = 0;
intrmask_t saved_mask;
if (c->as->caching_policy == UNW_CACHE_NONE)
return uncached_dwarf_find_save_locs (c);
cache = get_rs_cache(c->as, &saved_mask);
rs = rs_lookup(cache, c);
if (rs)
{
c->ret_addr_column = rs->ret_addr_column;
c->use_prev_instr = ! rs->signal_frame;
}
else
{
if ((ret = fetch_proc_info (c, c->ip, 1)) < 0 ||
(ret = create_state_record_for (c, &sr, c->ip)) < 0)
{
put_rs_cache (c->as, cache, &saved_mask);
put_unwind_info (c, &c->pi);
return ret;
}
rs = rs_new (cache, c);
memcpy(rs, &sr.rs_current, offsetof(struct dwarf_reg_state, ip));
cache->buckets[c->prev_rs].hint = rs - cache->buckets;
c->hint = rs->hint;
c->prev_rs = rs - cache->buckets;
put_unwind_info (c, &c->pi);
}
memcpy (&rs_copy, rs, sizeof (rs_copy));
put_rs_cache (c->as, cache, &saved_mask);
tdep_reuse_frame (c, &rs_copy);
if ((ret = apply_reg_state (c, &rs_copy)) < 0)
return ret;
return 0;
}
static int
uncached_dwarf_find_save_locs (struct dwarf_cursor *c)
{
dwarf_state_record_t sr;
int ret;
if ((ret = fetch_proc_info (c, c->ip, 1)) < 0)
return ret;
if ((ret = create_state_record_for (c, &sr, c->ip)) < 0)
return ret;
if ((ret = apply_reg_state (c, &sr.rs_current)) < 0)
return ret;
put_unwind_info (c, &c->pi);
return 0;
}
/* The proc-info must be valid for IP before this routine can be
called. */
HIDDEN int
dwarf_create_state_record (struct dwarf_cursor *c, dwarf_state_record_t *sr)
{
return create_state_record_for (c, sr, c->ip);
}
