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Re: [PATCH 1/2] target/arm/translate-neon: UNDEF if VLD1/VST1 stride bit
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From: |
Peter Maydell |
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Subject: |
Re: [PATCH 1/2] target/arm/translate-neon: UNDEF if VLD1/VST1 stride bits are non-zero |
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Date: |
Thu, 3 Mar 2022 11:43:56 +0000 |
On Thu, 3 Mar 2022 at 11:37, Peter Maydell <peter.maydell@linaro.org> wrote:
>
> For VLD1/VST1 (single element to one lane) we are only accessing one
> register, and so the 'stride' is meaningless. The bits that would
> specify stride (insn bit [4] for size=1, bit [6] for size=2) are
This should say "bit [5] for size=1".
> specified to be zero in the encoding (which would correspond to a
> stride of 1 for VLD2/VLD3/VLD4 etc), and we must UNDEF if they are
> not.
-- PMM