Il 09/10/2012 22:07, Richard Henderson ha scritto:
>> > +case CC_OP_ADCB:
>> > +case CC_OP_ADCW:
>> > +case CC_OP_ADCL:
>> > +case CC_OP_ADCQ:
>> > +/* (DATA_TYPE)CC_DST <= (DATA_TYPE)CC_SRC */
>> > +size = (s->cc_op - CC_OP_ADDB) & 3;
>> > +t1 = gen_ext_tl(c
On 10/06/2012 05:30 AM, Paolo Bonzini wrote:
> +case CC_OP_SUBB:
> +case CC_OP_SUBW:
> +case CC_OP_SUBL:
> +case CC_OP_SUBQ:
> +/* (DATA_TYPE)(CC_DST + CC_SRC) < (DATA_TYPE)CC_SRC */
> +size = (s->cc_op - CC_OP_ADDB) & 3;
I guess the & 3 makes the result "just so ha
On Sat, Oct 6, 2012 at 12:30 PM, Paolo Bonzini wrote:
> Do the switch at translation time, converting the helper templates to
> TCG opcodes. In some cases CF can be computed with a single setcond,
> though others it may require a little more work.
>
> In the CC_OP_DYNAMIC case, compute the whole
Do the switch at translation time, converting the helper templates to
TCG opcodes. In some cases CF can be computed with a single setcond,
though others it may require a little more work.
In the CC_OP_DYNAMIC case, compute the whole EFLAGS, same as for ZF/SF/PF.
Signed-off-by: Paolo Bonzini
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