Less than 100 instructions left to implement, with the vast vast
majority being load-and-stores. These will likely be knocked out quickly
but they require a more involved implementation than just simply
translating the instructions (several need multiple instructions, others
may need reserved registers (x16 or x17 are common for this purpose))
This is a good milestone to get something pushed to master.
This PR does the following:
- Designs a mechanism by which arm64 instructions can be encoded and
emitted
- Dispatch our higher-level instruction emitting calls to either x86 or
arm64 instructions depending on what the compiler is set to (defaults to
x86)
- Bare minimum scaffolding to get the arm64 instructions successfully
executing atleast on apple silicon
- Implement enough instructions to get the codetester test suite passing
on arm