Re: [RFC PATCH 7/8] riscv: Add RV64M instructions description

[Richard Henderson]

On 4/30/20 12:21 AM, LIU Zhiwei wrote:
> Signed-off-by: LIU Zhiwei <address@hidden>
> ---
>  riscv64.risu | 43 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 43 insertions(+)
> 
> diff --git a/riscv64.risu b/riscv64.risu
> index 98141ab..f006dc8 100644
> --- a/riscv64.risu
> +++ b/riscv64.risu
> @@ -139,3 +139,46 @@ SRLW RISCV 0000000 rs2:5 rs1:5 101 rd:5 0011011 \
>  
>  SRAW RISCV 0100000 rs2:5 rs1:5 101 rd:5 0011011 \
>  !constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 }
> +
> +@RV64M
> +
> +MUL RISCV 0000001 rs2:5 rs1:5 000 rd:5 0110011 \
> +!constraints { $rd != 2 && $rd != 3 && $rd != 4 && $rs1 != 2 && $rs2 != 2 }
> +

Modulo the use of a helper function,
Reviewed-by: Richard Henderson <address@hidden>


r~