Re: [PATCH 6/8] target/riscv: Support of compiler's 128-bit integer types

[Richard Henderson]

On 8/30/21 10:16 AM, Frédéric Pétrot wrote:
> diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
> index 6528b4540e..4321b03b94 100644
> --- a/target/riscv/cpu.h
> +++ b/target/riscv/cpu.h
> @@ -60,6 +60,19 @@
>   #define RV64 ((target_ulong)2 << (TARGET_LONG_BITS - 2))
>   /* To be used on misah, the upper part of misa */
>   #define RV128 ((target_ulong)3 << (TARGET_LONG_BITS - 2))
> +/*
> + * Defined to force the use of tcg 128-bit arithmetic
> + * if the compiler does not have a 128-bit built-in type
> + */
> +#define SOFT_128BIT
> +/*
> + * If available and not explicitly disabled,
> + * use compiler's 128-bit integers.
> + */
> +#if defined(__SIZEOF_INT128__) && !defined(SOFT_128BIT)
> +#define HARD_128BIT
> +#endif

This doesn't belong here.  CONFIG_INT128 is more correct.


r~