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LDR destination xzr #85

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BugraEryilmaz opened this issue Nov 26, 2024 · 1 comment
Open

LDR destination xzr #85

BugraEryilmaz opened this issue Nov 26, 2024 · 1 comment
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@BugraEryilmaz
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Description
LDR instruction with target register 31 should be regarded as zero register and discard the result. It is considered as SP now.

Steps to Reproduce
Run data caching image with 2 cores
After some time an instruction LDR xzr, ...
Expected Behavior
Load should be issued but the result should be discarded.

Actual Behavior
it will execute and save the result to SP and trigger validation failure
@BugraEryilmaz BugraEryilmaz self-assigned this Nov 26, 2024
@BugraEryilmaz
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Fixed with this: aee8f76
Afterwards, I noticed the forwarding should also be removed if the result is zero register. That is fixed by: 141cf3a

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