Native Apple Silicon (darwin-arm64) Support

[keegandent]

Re-do of #908 with squashed commits.

I made some basic switches in the Makefile so now it's possible to build and run on macOS without Rosetta 2.

Without knowing maintainer plans, I have it display a warning that arm64 (not aarch64) is not officially supported. If project leadership wishes to officially support this configuration, recommended as this is Apple's architecture going forward, we can remove the warning.

I made an effort to support assembly functionality for the new dynarec as part of #831, but it is either beyond my abilities or not feasible at this time. Regardless, the emulator passes the tests without this element, so I am presuming there is no drawback to releasing with NO_ASM for darwin-arm64.

[keegandent]

I know the commit message on this one is pretty bad, does the maintainer doing the merge have the option of changing it upon approval?

Should I be including any artifacts to show these changes perform as advertised?

[Jj0YzL5nvJ]

git clone https://github.com/keegandent/mupen64plus-core.git
wget -O apple-silicon.patch https://github.com/keegandent/mupen64plus-core/commit/d57d9029100b7a4b44c4d850e3902dae04def00a.patch
cd mupen64plus-core/
git remote add upstream https://github.com/mupen64plus/mupen64plus-core.git
git fetch upstream
git fetch --tags upstream
git checkout apple-silicon
git reset --hard 57828d930280554c7400bb2bcf1e46c7f2ee8373
git merge upstream/master
git apply ../apple-silicon.patch
git add projects/unix/Makefile
git commit -m "Adding Apple Silicon support..."
git push --force origin apple-silicon

This code will 'rebase' your 'pull' to mupen64plus-core:master and re-add your changes as Adding Apple Silicon support..., you can change the message as you see fit.

[keegandent]

Thank you; the commit message is less terrible now. Please let me know if there are any artifacts that should be provided as evidence. I would be happy to create and attach them.

[keegandent]

Is there something else I need to provide before this can be merged?

[richard42]

sorry it's been so long. I have a huge list of stuff to review for m64+ and this is actually at the top. I'll take a look after I get back from vacation in a week.