Re: [Qemu-devel] [PATCH RFC v0 6/6] target-ppc: add extswsli[.] instruction

[David Gibson <david@gibson.dropbear.id.au>]

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On Wed, Jul 27, 2016 at 12:56:58AM +0530, Nikunj A Dadhania wrote:
> extswsli : Extend Sign Word & Shift Left Immediate
> 
> Signed-off-by: Nikunj A Dadhania <nikunj@linux.vnet.ibm.com>

Reviewed-by: David Gibson <david@gibson.dropbear.id.au>

> ---
>  target-ppc/translate.c | 30 ++++++++++++++++++++++++++++++
>  1 file changed, 30 insertions(+)
> 
> diff --git a/target-ppc/translate.c b/target-ppc/translate.c
> index 3382cd0..0a1b750 100644
> --- a/target-ppc/translate.c
> +++ b/target-ppc/translate.c
> @@ -2322,6 +2322,32 @@ static void gen_sradi1(DisasContext *ctx)
>      gen_sradi(ctx, 1);
>  }
>  
> +/* extswsli & extswsli. */
> +static inline void gen_extswsli(DisasContext *ctx, int n)
> +{
> +    int sh = SH(ctx->opcode) + (n << 5);
> +    TCGv dst = cpu_gpr[rA(ctx->opcode)];
> +    TCGv src = cpu_gpr[rS(ctx->opcode)];
> +
> +    tcg_gen_ext32s_tl(dst, src);
> +    if (sh != 0) {
> +        tcg_gen_shli_tl(dst, dst, sh);
> +    }
> +    if (unlikely(Rc(ctx->opcode) != 0)) {
> +        gen_set_Rc0(ctx, dst);
> +    }
> +}
> +
> +static void gen_extswsli0(DisasContext *ctx)
> +{
> +    gen_extswsli(ctx, 0);
> +}
> +
> +static void gen_extswsli1(DisasContext *ctx)
> +{
> +    gen_extswsli(ctx, 1);
> +}
> +
>  /* srd & srd. */
>  static void gen_srd(DisasContext *ctx)
>  {
> @@ -10231,6 +10257,10 @@ GEN_HANDLER(srad, 0x1F, 0x1A, 0x18, 0x00000000, PPC_64B),
>  GEN_HANDLER2(sradi0, "sradi", 0x1F, 0x1A, 0x19, 0x00000000, PPC_64B),
>  GEN_HANDLER2(sradi1, "sradi", 0x1F, 0x1B, 0x19, 0x00000000, PPC_64B),
>  GEN_HANDLER(srd, 0x1F, 0x1B, 0x10, 0x00000000, PPC_64B),
> +GEN_HANDLER2_E(extswsli0, "extswsli", 0x1F, 0x1A, 0x1B, 0x00000000,
> +               PPC_NONE, PPC2_ISA300),
> +GEN_HANDLER2_E(extswsli1, "extswsli", 0x1F, 0x1B, 0x1B, 0x00000000,
> +               PPC_NONE, PPC2_ISA300),
>  #endif
>  GEN_HANDLER(frsqrtes, 0x3B, 0x1A, 0xFF, 0x001F07C0, PPC_FLOAT_FRSQRTES),
>  GEN_HANDLER(fsqrt, 0x3F, 0x16, 0xFF, 0x001F07C0, PPC_FLOAT_FSQRT),

-- 
David Gibson			| I'll have my music baroque, and my code
david AT gibson.dropbear.id.au	| minimalist, thank you.  NOT _the_ _other_
				| _way_ _around_!
http://www.ozlabs.org/~dgibson

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