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Date: Tue, 31 Jul 2012 19:14:46 +0200
From: Jose Cano Reyes <jcano@ac.upc.edu>
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Subject: Re: [Qemu-devel] Adding a parameter to a helper
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To: Laurent Desnogues <laurent.desnogues@gmail.com>
Cc: qemu-devel@nongnu.org


Ok, I am going to try...


In fact, I did it before posting Laurent, but I don't understand it=20
completely. Anyway, thanks a lot for your help.


    Jose.



El 31/07/12 17:14, Laurent Desnogues escribi=F3:
> On Tue, Jul 31, 2012 at 5:09 PM, Jose Cano Reyes <jcano@ac.upc.edu> wro=
te:
>> - So, how ca I obtain the value that TCGv_i32 represents?
> In the generated code (that is after TCG is translated to host
> machine code), you'll et your value in your helper.  If you mean
> before running the helper, then it's much more complex and
> would require to process the TCG code.
>
>> - I don't understand well how a helper functions. For instance, coside=
ring
>> this call to a helper again:
>>
>>          gen_helper_flds_ST0(cpu_tmp2_i32, tcg_const_i32(MY_INT_VALUE)=
)
>>
>>    Can I obtain the parameters "cpu_tmp2_i32" and
>> "tcg_const_i32(MY_INT_VALUE)" from the args[0] and args[1] described i=
n
>> DEF_HELPER_FLAGS_2???
> cf. above.  Again look at existing helpers and how they get
> const values.
>
>
> Laurent