Preventing bugs with register usage and ABI compliance in hand-written assembly

[Vicente Romero]

Hi Evgeny,

I think you intended to post to: hotspot-compiler-dev at openjdk.org

Thanks,
Vicente

On 5/22/24 16:59, Astigeevich, Evgeny wrote:
>
> Hello,
>
> I’d like to discuss what options we have to prevent bugs like 
> https://bugs.openjdk.org/browse/JDK-8324874 “AArch64: crypto pmull 
> based CRC32/CRC32C intrinsics clobber V8-V15 registers”.
>
> I am thinking about something like:
>
> “
>
> {
>
>     ABIVerifier abi_verifier(masm);
>
>  …
>
> Some assembly code
>
> } // When we leave the block abi_verifier will check ABI compliance
>
> “
>
> An alternative way might to enable ABI verification via StubCodeMark.
>
> Kind regrads,
>
> Evgeny Astigeevich
>
>
>
>
> Amazon Development Centre (London) Ltd.Registered in England and Wales 
> with registration number 04543232 with its registered office at 1 
> Principal Place, Worship Street, London EC2A 2FA, United Kingdom.
>
>
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