Re: Behaviour of jit_qrsh()

[Paul Cercueil]

Hi Paulo,

Le mardi 03 octobre 2023 à 14:23 -0300, Paulo César Pereira de Andrade
a écrit :
> Em ter., 3 de out. de 2023 às 00:29, Paulo César Pereira de Andrade
> <paulo.cesar.pereira.de.andrade@gmail.com> escreveu:
> 
> > > > > I'm trying to implement the q-shift operations on SH4.
> > > > > 
> > > > > In the doc, jit_qrsh() is defined as this operation:
> > > > > O1 = O3 >> O4, O2 = O3 << (WORDSIZE - O4)
> 
>   Should be fixed now.

Great, thanks!

>   On aarch64 and mips it relies on:
> 
> rshr %r0 %r1 %r2
> 
> with %r2 == wordsize setting %r0 with either 0 or -1 depending
> on the sign of %r1.
> 
>   On qemu alpha this is not true, so an extra test was added.
>   For ia64 I just assumed it needs the same workaround.
> 
> Thanks!
> Paulo

Cheers,
-Paul