Run xv6-x86-64 on macOS M

https://en.wikipedia.org/wiki/Xv6

I used to believe it’s not possible to run xv6-x86-64 version on macOS with arm chip. It turns out that it is not that hard to do that with qemu.

All we need is to install qemu on your macOS.

brew install qemu

Verify:

which qemu-system-x86_64
$ /opt/homebrew/bin/qemu-system-x86_64

Install cross-compilation toolchain:

$ brew install x86_64-elf-gcc
$ which x86_64-elf-gcc
$ /opt/homebrew/bin/x86_64-elf-gcc

make qemu-nox