RFR: 8344356: Aarch64: implement -XX:+VerifyActivationFrameSize

[Andrew Haley]

On Sun, 17 Nov 2024 09:06:37 GMT, SendaoYan <syan at openjdk.org> wrote:

> Hi all,
> Currently on aarch64 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
> - [ ] jtreg tests(include tier1/2/3 etc.) on linux-aarch64 fastdebug build

src/hotspot/cpu/aarch64/interp_masm_aarch64.cpp line 397:

> 395:   if (VerifyActivationFrameSize) {
> 396:     Label L;
> 397:     subw(rscratch1, rfp, esp);

Use 64-bit arithmetic here, or you'll miss some kinds of error.

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PR Review Comment: https://git.openjdk.org/jdk/pull/22181#discussion_r1846712858