On Mon, Nov 30, 2015 at 10:38 PM, Bernd Schmidt wrote:
> On 11/27/2015 10:02 AM, Bernd Schmidt wrote:
>>
>> This is a patch for PRs 68471 and 68472, which show problems with the
>> ROP mitigation:
>> * reg-stack doesn't call df_insn_update when it makes changes, and
>> if df checking is enab
On 11/27/2015 10:02 AM, Bernd Schmidt wrote:
This is a patch for PRs 68471 and 68472, which show problems with the
ROP mitigation:
* reg-stack doesn't call df_insn_update when it makes changes, and
if df checking is enabled, any subsequent df_analyze call will
abort
* Using -mcmodel=m
> Both good points. Ok with those changes (will retest)?
Yes, thanks.
--
Eric Botcazou
On 11/27/2015 10:26 AM, Eric Botcazou wrote:
+#ifdef STACK_REGS
+ if (regstack_completed
+ && REG_P (recog_data.operand[i])
+ && IN_RANGE (REGNO (recog_data.operand[i]),
+ FIRST_STACK_REG, LAST_STACK_REG))
+ u
> Both of these are fixed in the i386 backend. As a further safety
> measure, I've added some extra code to regrename to ignore stack regs
> after regstack_complete - they can't be dealt with anymore.
+#ifdef STACK_REGS
+ if (regstack_completed
+ && REG_P (recog_data.op
