Re: [Qemu-devel] [PATCH v2 2/2] [SPARC] Fix TA0_Shutdown feature

[Blue Swirl <blauwirbel@gmail.com>]

On Fri, May 27, 2011 at 7:25 PM, Julien Grall <julien.grall@gmail.com> wrote:
> Hello,
>
> Since the last patch, I have added a special helper for trap 0. It
> will be use when the TA0_Shutdown feature is enabled.

This patch looks OK now.

> Signed-off-by: Grall Julien <julien.grall@gmail.com>
> ---
>  target-sparc/helper.h    |    1 +
>  target-sparc/op_helper.c |   14 ++++++++++++++
>  target-sparc/translate.c |    6 ++----
>  3 files changed, 17 insertions(+), 4 deletions(-)
>
> diff --git a/target-sparc/helper.h b/target-sparc/helper.h
> index 61ef03a..7f50c7a 100644
> --- a/target-sparc/helper.h
> +++ b/target-sparc/helper.h
> @@ -86,6 +86,7 @@ DEF_HELPER_0(fcmpeq_fcc3, void)
>  #endif
>  DEF_HELPER_1(raise_exception, void, int)
>  DEF_HELPER_1(trap_always, void, int)
> +DEF_HELPER_1(trap_0, void, int)
>  DEF_HELPER_0(shutdown, void)
>  #define F_HELPER_0_0(name) DEF_HELPER_0(f ## name, void)
>  #define F_HELPER_DQ_0_0(name)                   \
> diff --git a/target-sparc/op_helper.c b/target-sparc/op_helper.c
> index 8f9d579..266080d 100644
> --- a/target-sparc/op_helper.c
> +++ b/target-sparc/op_helper.c
> @@ -330,6 +330,19 @@ void HELPER(trap_always)(int tt)
>     do_interrupt(env);
>  }
>
> +void HELPER(trap_0)(int tt)
> +{
> +#ifndef TARGET_SPARC64
> +    if (env->psret == 0) {
> +        helper_shutdown();
> +    } else {
> +        helper_trap_always(tt);
> +    }
> +#else
> +    helper_trap_always(tt);
> +#endif
> +}
> +
>  void helper_shutdown(void)
>  {
>  #if !defined(CONFIG_USER_ONLY)
> diff --git a/target-sparc/translate.c b/target-sparc/translate.c
> index 64035fc..13181ef 100644
> --- a/target-sparc/translate.c
> +++ b/target-sparc/translate.c
> @@ -2037,10 +2037,8 @@ static void disas_sparc_insn(DisasContext * dc)
>                     tcg_gen_trunc_tl_i32(cpu_tmp32, cpu_dst);
>
>                     if (rs2 == 0 &&
> -                        dc->def->features & CPU_FEATURE_TA0_SHUTDOWN) {
> -
> -                        gen_helper_shutdown();
> -
> +                        (dc->def->features & CPU_FEATURE_TA0_SHUTDOWN)) {
> +                        gen_helper_trap_0(cpu_tmp32);
>                     } else {
>                         gen_helper_trap_always(cpu_tmp32);
>                     }
> --
> 1.7.4.4
>
>