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Re: [Qemu-devel] [RISU RFC PATCH v2 06/14] x86.risu: add MMX instruction

From: Richard Henderson
Subject: Re: [Qemu-devel] [RISU RFC PATCH v2 06/14] x86.risu: add MMX instructions
Date: Wed, 3 Jul 2019 23:49:04 +0200
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:60.0) Gecko/20100101 Thunderbird/60.7.1 
On 7/1/19 6:35 AM, Jan Bobek wrote:
> +MOVQ            MMX     00001111 011 d 1110 !emit { rex(w => 1); modrm(mod 
> => MOD_DIRECT, rm => ~REG_ESP); }
> +MOVQ_mem        MMX     00001111 011 d 1110 !emit { rex(w => 1); modrm(mod 
> => ~MOD_DIRECT); mem(size => 8); }

Oh, note that there are only 8 mmx registers, so the respective rex.{r,b} bit
can't be set.


r~
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