> Please review the implementation of JEP 391: macOS/AArch64 Port.
>
> It's heavily based on existing ports to linux/aarch64, macos/x86_64, and
> windows/aarch64.
>
> Major changes are in:
> * src/hotspot/cpu/aarch64: support of the new calling convention (subtasks
> JDK-8253817, JDK-8253818)
> * src/hotspot/os_cpu/bsd_aarch64: copy of os_cpu/linux_aarch64 with necessary
> adjustments (JDK-8253819)
> * src/hotspot/share, test/hotspot/gtest: support of write-xor-execute (W^X),
> required on macOS/AArch64 platform. It's implemented with
> pthread_jit_write_protect_np provided by Apple. The W^X mode is local to a
> thread, so W^X mode change relates to the java thread state change (for java
> threads). In most cases, JVM executes in write-only mode, except when calling
> a generated stub like SafeFetch, which requires a temporary switch to
> execute-only mode. The same execute-only mode is enabled when a java thread
> executes in java or native states. This approach of managing W^X mode turned
> out to be simple and efficient enough.
> * src/jdk.hotspot.agent: serviceability agent implementation (JDK-8254941)
Anton Kozlov has updated the pull request with a new target base due to a merge
or a rebase. The pull request now contains 75 commits:
- Pull/2200 (#5)
* bsd_aarch64 cleanup
* remove the actual attribute too
* Refactor bailing out on nativeWrapper generation
* rename c_call_conv_priv function
- Merge branch 'master' into jdk-macos
- Merge remote-tracking branch 'upstream/jdk/master' into jdk-macos
Additional work for JDK-8253817: Support macOS Aarch64 ABI in
Interpreter
- JDK-8257882: oops, fixed 7fe50a996b6f436932452d220b351c73153ed945
- Update signal handler part for debugger
- Cleanup SA changes
- Merge remote-tracking branch 'origin/jdk/jdk-macos' into jdk-macos
- support macos_aarch64 in hsdis
- Merge branch 'master' into jdk-macos
- Update copyright year for BsdAARCH64ThreadContext.java
- ... and 65 more: https://git.openjdk.java.net/jdk/compare/849f4c0f...a9452a4c
-
Changes: https://git.openjdk.java.net/jdk/pull/2200/files
Webrev: https://webrevs.openjdk.java.net/?repo=jdk=2200=14
Stats: 3032 lines in 83 files changed: 2919 ins; 47 del; 66 mod
Patch: https://git.openjdk.java.net/jdk/pull/2200.diff
Fetch: git fetch https://git.openjdk.java.net/jdk pull/2200/head:pull/2200
PR: https://git.openjdk.java.net/jdk/pull/2200