RFR: 8344526: RISC-V: implement -XX:+VerifyActivationFrameSize

[SendaoYan]

On Wed, 20 Nov 2024 02:52:40 GMT, Fei Yang <fyang at openjdk.org> wrote:

>> Hi all,
>> Currently on linux-riscv64 platform the debug VM option `-XX:+VerifyActivationFrameSize` is Unimplemented. I want to implement `-XX:+VerifyActivationFrameSize` to make JVM easier to diagnose. Only effect debug build plus with option `-XX:+VerifyActivationFrameSize`, the change has been verified locally, the risk is low.
>> 
>> Additional testing
>> 
>> - [ ] jtreg tests(include tier1/2/3 etc.) on linux-aarch64 release build
>
> src/hotspot/cpu/riscv/interp_masm_riscv.cpp line 447:
> 
>> 445:     sub(t1, fp, esp);
>> 446:     int min_frame_size = (frame::link_offset - frame::interpreter_frame_initial_sp_offset) * wordSize;
>> 447:     add(t1, t1, -min_frame_size);
> 
> Suggestion: `sub(t1, t1, min_frame_size);`

Thanks, the `add` has been replaced as `sub`

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PR Review Comment: https://git.openjdk.org/jdk/pull/22264#discussion_r1849438199