RFR: 8316182: RISC-V: SA stack walking code having trouble finding sender frame when invoking LambdaForms is involved

[Feilong Jiang]

On Thu, 14 Sep 2023 14:44:09 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Hi, please consider.
>> Inspired by [JDK-8313800](https://bugs.openjdk.org/browse/JDK-8313800). RISC-V also treats x8/fp as a callee-saved scratch register for some time, and it is freely used by C2-generated code. Therefore, any code in SA that uses getFP() in a compiled frame is very likely to come to grief.
>> 
>> Testing:
>> - [x] hotspot_serviceability
>> - [x] jdk_svc
>> - [x] tier1
>
> LGTM

@RealFYang -- Thanks!

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PR Comment: https://git.openjdk.org/jdk/pull/15714#issuecomment-1721013886