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Identify end-of-stack by undefined return address location.

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Lassi Tuura 2010-04-20 23:13:11 +02:00 committed by Arun Sharma
parent dac2d001af
commit 4c553ceb2c
1 changed files with 13 additions and 6 deletions
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19
src/dwarf/Gparser.c
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@ -750,13 +750,20 @@ apply_reg_state (struct dwarf_cursor *c, struct dwarf_reg_state *rs)
break; break;
} }
} }
c->cfa = cfa;
ret = dwarf_get (c, c->loc[c->ret_addr_column], &ip);
if (ret < 0)
return ret;
c->ip = ip;
/* XXX: check for ip to be code_aligned */
c->cfa = cfa;
/* DWARF spec says undefined return address location means end of stack. */
if (DWARF_IS_NULL_LOC (c->loc[c->ret_addr_column]))
c->ip = 0;
else
{
ret = dwarf_get (c, c->loc[c->ret_addr_column], &ip);
if (ret < 0)
return ret;
c->ip = ip;
}
/* XXX: check for ip to be code_aligned */
if (c->ip == prev_ip && c->cfa == prev_cfa) if (c->ip == prev_ip && c->cfa == prev_cfa)
{ {
Dprintf ("%s: ip and cfa unchanged; stopping here (ip=0x%lx)\n", Dprintf ("%s: ip and cfa unchanged; stopping here (ip=0x%lx)\n",