Re: [Qemu-devel] [PATCH v2 5/5] target-tricore: Add updfl instruction

[Richard Henderson]

On 11/07/2016 03:44 PM, Bastian Koppelmann wrote:
> +void helper_updfl(CPUTriCoreState *env, uint32_t arg)
> +{
> +    env->FPU_FS =  extract32(arg, 7, 1) & extract32(arg, 15, 1);
> +    env->FPU_FI = (extract32(arg, 6, 1) & extract32(arg, 14, 1)) << 31;
> +    env->FPU_FV = (extract32(arg, 5, 1) & extract32(arg, 13, 1)) << 31;
> +    env->FPU_FZ = (extract32(arg, 4, 1) & extract32(arg, 12, 1)) << 31;
> +    env->FPU_FU = (extract32(arg, 3, 1) & extract32(arg, 11, 1)) << 31;
> +    /* clear FX and RM */
> +    env->PSW &= ~(extract32(arg, 10, 1) << 26);
> +    env->PSW |= (extract32(arg, 2, 1) & extract32(arg, 10, 1)) << 26;
> +}

Need a call to fpu_set_state here, to update the rounding mode in 
env->fp_status.


r~