Re: MIPS32R2 simulator fixes

[Richard Sandiford <rsandifo@nildram.co.uk>]

Thiemo Seufer <ths@networkno.de> writes:
> Richard Sandiford wrote:
>>   - The MIPS32R2 version of check_fmt_p checks UX and PX, but those
>>     flags are always read as 0 on MIPS32R2 targets.  There isn't
>>     AFAIK any way of turning off paired-single instructions when
>>     using a MIPS32R2 target that has a 64-bit FPU.
>
> It is correct that there's no separate switch to disable paired single
> when the MIPS-3D ASE is implemented. There is, however, the 3D bit in
> FCR0 which announces the availablity of paired single instructions,
> it should be set for the MIPS32R2/MIPS64* emulations.

OK.

>> sim/mips/
>> 	* mips.igen (check_fmt_p): Provide a separate mips32r2 definition
>> 	that unconditionally allows fmt_ps.
>> 	(ALNV.PS, CEIL.L.fmt, CVT.L.fmt, CVT.PS.S, CVT.S.PL, CVT.S.PU)
>> 	(FLOOR.L.fmt, LWXC1, MADD.fmt, MSUB.fmt, NMADD.fmt, NMSUB.fmt)
>> 	(PLL.PS, PLU.PS, PUL.PS, PUU.PS, ROUND.L.fmt, TRUNC.L.fmt): Change
>> 	filter from 64,f to 32,f.
>> 	(PREFX): Change filter from 64 to 32.
>> 	(LDXC1, LUXC1): Provide separate mips32r2 implementations
>> 	that use do_load_double instead of do_load.  Make both LUXC1
>> 	versions unpredictable if SizeFGR () != 64.
>> 	(SDXC1, SUXC1): Extend to mips32r2, using do_store_double
>> 	instead of do_store.  Remove unused variable.  Make both SUXC1
>> 	versions unpredictable if SizeFGR () != 64.
>
> Looks good.

Applied, thanks.

Richard