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Re: [PATCH 06/20] target/loongarch: Add main translation routines


From: Philippe Mathieu-Daudé
Subject: Re: [PATCH 06/20] target/loongarch: Add main translation routines
Date: Mon, 28 Jun 2021 20:46:39 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:78.0) Gecko/20100101 Thunderbird/78.11.0

On 6/28/21 2:04 PM, Song Gao wrote:
> This patch add main translation routines and
> basic functions for translation.
> 
> Signed-off-by: Song Gao <gaosong@loongson.cn>
> ---
>  target/loongarch/helper.h    |  10 +
>  target/loongarch/op_helper.c |  28 +++
>  target/loongarch/translate.c | 537 
> +++++++++++++++++++++++++++++++++++++++++++
>  target/loongarch/translate.h |  58 +++++
>  4 files changed, 633 insertions(+)
>  create mode 100644 target/loongarch/helper.h
>  create mode 100644 target/loongarch/op_helper.c
>  create mode 100644 target/loongarch/translate.c
>  create mode 100644 target/loongarch/translate.h

> +/* 128 and 256 msa vector instructions are not supported yet */
> +static bool decode_lsx(uint32_t opcode)
> +{
> +    uint32_t value = (opcode & 0xff000000);
> +
> +    if ((opcode & 0xf0000000) == 0x70000000) {
> +        return true;
> +    } else if ((opcode & 0xfff00000) == 0x38400000) {
> +        return true;
> +    } else {
> +        switch (value) {
> +        case 0x09000000:
> +        case 0x0a000000:
> +        case 0x0e000000:
> +        case 0x0f000000:
> +        case 0x2c000000:
> +        case 0x30000000:
> +        case 0x31000000:
> +        case 0x32000000:
> +        case 0x33000000:
> +            return true;
> +        }
> +    }
> +    return false;
> +}

Why not generate that with the decodetree script?



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