Re: [PATCH] ppc: Fix 'calli' when floating-point arguments are passed

[Paulo César Pereira de Andrade]

Em qui., 8 de set. de 2022 às 14:18, Paulo César Pereira de Andrade
<paulo.cesar.pereira.de.andrade@gmail.com> escreveu:

[snip]

> > The problem now is that r26 should be live at L2 but is not detected as
> > such.
> > This causes Lightning to use r26 as a temporary for the andi line 34
> > (lines 153-155 in the generated code).
>
>   What code you use to access 'r10' and 'r3'? It is possible to use
> JIT_R(5) and JIT_R(12) as I did in the C code, but it is an ugly hack,
> taking advantage that it does not check bounds. The check/lightning.c
> code need to be patched to accept it...
>
>   Can you create a reproducer in C, starting with the above sample?

  Well, the most likely cause is that it did happen because of a lightning
build without the last 3 commits, and is a side effect of the jumps to a
raw address:

    jmpi 0x20000d0c

> > Cheers,
> > -Paul
>
> Thanks,
> Paulo