Re: [Qemu-devel] [RFC PATCH V1 1/2] target-microblaze: impelemented swapx instructions

[Edgar E. Iglesias]

On Thu, May 17, 2012 at 03:37:49PM +1000, Peter A. G. Crosthwaite wrote:
> Implemented the swapb and swaph byte/halfword reversal instructions added
> to microblaze v8.30
> 
> Signed-off-by: Peter A. G. Crosthwaite <address@hidden>

Applied, thanks Peter



> ---
>  target-microblaze/translate.c |   12 +++++++++++-
>  1 files changed, 11 insertions(+), 1 deletions(-)
> 
> diff --git a/target-microblaze/translate.c b/target-microblaze/translate.c
> index 742b395..a362938 100644
> --- a/target-microblaze/translate.c
> +++ b/target-microblaze/translate.c
> @@ -743,7 +743,7 @@ static void dec_bit(DisasContext *dc)
>      unsigned int op;
>      int mem_index = cpu_mmu_index(dc->env);
>  
> -    op = dc->ir & ((1 << 8) - 1);
> +    op = dc->ir & ((1 << 9) - 1);
>      switch (op) {
>          case 0x21:
>              /* src.  */
> @@ -825,6 +825,16 @@ static void dec_bit(DisasContext *dc)
>                  gen_helper_clz(cpu_R[dc->rd], cpu_R[dc->ra]);
>              }
>              break;
> +        case 0x1e0:
> +            /* swapb */
> +            LOG_DIS("swapb r%d r%d\n", dc->rd, dc->ra);
> +            tcg_gen_bswap32_i32(cpu_R[dc->rd], cpu_R[dc->ra]);
> +            break;
> +        case 0x1e1:
> +            /*swaph */
> +            LOG_DIS("swaph r%d r%d\n", dc->rd, dc->ra);
> +            tcg_gen_rotri_i32(cpu_R[dc->rd], cpu_R[dc->ra], 16);
> +            break;
>          default:
>              cpu_abort(dc->env, "unknown bit oc=%x op=%x rd=%d ra=%d rb=%d\n",
>                       dc->pc, op, dc->rd, dc->ra, dc->rb);
> -- 
> 1.7.3.2
>