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Re: [Qemu-devel] [PATCH 3/3] target/mips: Add emulation of MMI instructi


From: Richard Henderson
Subject: Re: [Qemu-devel] [PATCH 3/3] target/mips: Add emulation of MMI instruction PCPYUD
Date: Mon, 25 Feb 2019 14:22:06 -0800
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.4.0

On 2/25/19 8:10 AM, Mateja Marjanovic wrote:
> +    if (rd == 0) {
> +        /* nop */
> +    } else if ((rt == 0) && (rs == 0)) {
> +        tcg_gen_movi_i64(cpu_gpr[rt], 0);
> +        tcg_gen_movi_i64(cpu_mmr[rt], 0);
> +    } else if (rt == 0) {
> +        tcg_gen_movi_i64(cpu_mmr[rd], 0);
> +        tcg_gen_mov_i64(cpu_gpr[rd], cpu_mmr[rs]);
> +    } else if (rs == 0) {
> +        tcg_gen_mov_i64(cpu_mmr[rd], cpu_mmr[rt]);
> +        tcg_gen_movi_i64(cpu_gpr[rd], 0);
> +    } else {
> +        tcg_gen_mov_i64(cpu_mmr[rd], cpu_mmr[rt]);
> +        tcg_gen_mov_i64(cpu_gpr[rd], cpu_mmr[rs]);
> +    }

Same as patch 2.  You may have to invent gen_load_mmr.


r~



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