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Extract 'find_reg_state' from dwarf_find_save_locs.

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This commit is contained in:
Doug Moore 2017-05-08 21:27:03 -05:00
parent 04db2b7cea
commit 1602987b5f
1 changed files with 18 additions and 8 deletions
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26
src/dwarf/Gparser.c
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@ -874,12 +874,10 @@ apply_reg_state (struct dwarf_cursor *c, struct dwarf_reg_state *rs)
return 0;
}
/* The function finds the saved locations and applies the register
state as well. */
HIDDEN int
dwarf_find_save_locs (struct dwarf_cursor *c)
/* Find the saved locations. */
static int
find_reg_state (struct dwarf_cursor *c, dwarf_state_record_t *sr)
{
dwarf_state_record_t sr;
dwarf_reg_state_t *rs;
struct dwarf_rs_cache *cache;
int ret = 0;
@ -891,20 +889,20 @@ dwarf_find_save_locs (struct dwarf_cursor *c)
/* update hint; no locking needed: single-word writes are atomic */
c->ret_addr_column = rs->ret_addr_column;
c->use_prev_instr = ! rs->signal_frame;
memcpy (&sr.rs_current, rs, sizeof (*rs));
memcpy (&sr->rs_current, rs, sizeof (*rs));
}
else
{
ret = fetch_proc_info (c, c->ip, 1);
if (ret >= 0)
ret = create_state_record_for (c, &sr, c->ip);
ret = create_state_record_for (c, sr, c->ip);
put_unwind_info (c, &c->pi);
if (cache && ret >= 0)
{
rs = rs_new (cache, c);
cache->links[rs - cache->buckets].hint = 0;
memcpy(rs, &sr.rs_current, offsetof(struct dwarf_reg_state, ret_addr_column));
memcpy(rs, &sr->rs_current, offsetof(struct dwarf_reg_state, ret_addr_column));
}
}
@ -923,6 +921,18 @@ dwarf_find_save_locs (struct dwarf_cursor *c)
return ret;
if (cache)
tdep_reuse_frame (c, rs);
return 0;
}
/* The function finds the saved locations and applies the register
state as well. */
HIDDEN int
dwarf_find_save_locs (struct dwarf_cursor *c)
{
int ret;
dwarf_state_record_t sr;
if ((ret = find_reg_state (c, &sr)) < 0)
return ret;
if ((ret = apply_reg_state (c, &sr.rs_current)) < 0)
return ret;