On Mon, 27 Feb 2023 17:04:28 GMT, Saint Wesonga <d...@openjdk.org> wrote:
> There are 2 primary differences between the Windows ARM64 ABI and the > macOS/Linux ARM64 ABI: variadic floating point arguments are passed in > general purpose registers on Windows (instead of the vector registers). In > addition to this, up to 64 bytes of a struct being passed to a variadic > function can be placed in general purpose registers. This happens regardless > of the type of struct (HFA or other generic struct). This means that a struct > can be split across registers and the stack when invoking a variadic > function. The Windows ARM64 ABI conventions are documented at > https://learn.microsoft.com/en-us/cpp/build/arm64-windows-abi-conventions > > For details about the Foreign Function & Memory API, see JEP 434 at > https://openjdk.org/jeps/434 > > This change is a cherry pick of > https://github.com/openjdk/panama-foreign/commit/d379ca1c and > https://github.com/openjdk/panama-foreign/commit/08225e4f from > https://github.com/openjdk/panama-foreign/pull/754 and includes an additional > commit that introduces a VaList implementation for Windows on AArch64. Many thanks for looking into this port! ------------- PR: https://git.openjdk.org/jdk/pull/12773
