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Re: [Qemu-ppc] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signal
From: |
Leon Alrae |
Subject: |
Re: [Qemu-ppc] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning |
Date: |
Thu, 2 Jun 2016 10:17:22 +0100 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
> diff --git a/target-mips/translate.c b/target-mips/translate.c
> index e934884..2cdd2bd 100644
> --- a/target-mips/translate.c
> +++ b/target-mips/translate.c
> @@ -20129,7 +20129,11 @@ void cpu_state_reset(CPUMIPSState *env)
> env->CP0_PageGrain = env->cpu_model->CP0_PageGrain;
> env->active_fpu.fcr0 = env->cpu_model->CP1_fcr0;
> env->active_fpu.fcr31 = env->cpu_model->CP1_fcr31;
> - set_snan_bit_is_one(1, &env->active_fpu.fp_status);
> + if ((env->active_fpu.fcr31 >> FCR31_NAN2008) & 1) {
> + set_snan_bit_is_one(0, &env->active_fpu.fp_status);
> + } else {
> + set_snan_bit_is_one(1, &env->active_fpu.fp_status);
> + }
This change is reverted in patch #9, perhaps it will be better to fold
it into that patch?
Thanks,
Leon
> env->msair = env->cpu_model->MSAIR;
> env->insn_flags = env->cpu_model->insn_flags;
>
> diff --git a/target-mips/translate_init.c b/target-mips/translate_init.c
> index e81a831..a37d8bb 100644
> --- a/target-mips/translate_init.c
> +++ b/target-mips/translate_init.c
> @@ -893,5 +893,6 @@ static void msa_reset(CPUMIPSState *env)
> /* clear float_status nan mode */
> set_default_nan_mode(0, &env->active_tc.msa_fp_status);
>
> - set_snan_bit_is_one(1, &env->active_tc.msa_fp_status);
> + /* set proper signanling bit meaning ("1" means "quiet") */
> + set_snan_bit_is_one(0, &env->active_tc.msa_fp_status);
> }
> --
> 1.9.1
>
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- Re: [Qemu-ppc] [PATCH v6 6/9] target-mips: Activate IEEE 754-2008 signaling NaN bit meaning,
Leon Alrae <=