Re: [Qemu-devel] [PATCH v2 4/5] tricore: add QSEED instruction

[Bastian Koppelmann <kbastian@mail.uni-paderborn.de>]

On 6/19/19 9:56 AM, David Brenken wrote:
> +
> +        result = 0;
> +        result = deposit32(result, 31, 1, new_S);
> +        result = deposit32(result, 23, 8, new_E);
> +        result = deposit32(result, 15, 8, new_M);
> +    }
> +
> +    if (float32_is_any_nan(arg1) || result == float32_sqrt_nan) {


You need float32_is_signaling_nan, since only signaling nan raises the 
invalid flag.


> +        env->FPU_FI = 1;

env->FPU_FI = 1 << 31;

See f_update_psw_flags(). FPU_FI  and PSW_V are the same and we defined 
bit 31 as the V bit for optimization purposes.

Cheers,

Bastian