Interoperability (ARM64)

Please read the general section first, this contains ARM64 specific stuff.

Fallback Strategy: Free Space from Function Alignment

See General Section Notes.

In the case of ARM64, padding is usually down with the following sequences:
- nop (0xD503201F, big endian), used by GCC.
- and x0, x0 (0x00000000), used by MSVC.

Getting sufficient bytes to make good use of them in ARM64 is more uncommon than x86.