[AArch64-emitter] Initial work on a emitter for 64bit ARM.
This being the initial work on an emitter will be buggy and mostly untested.
I've tested a few instruction encodings and am expecting most to work as long as one stays away from VFP/SIMD.
This implements mostly enough instructions to bring up an initial JIT with integer support.
There also aren't any safeguards in place, so if one passes too large of an IMM or the wrong register it'll break.
Beginning of the AArch64 JIT branch.
This is a dirty code dump currently.
Crashes before outputting anything in the most simple of tests.
Doesn't even have all the instructions neded to end a simple code block(branches and anything with the flag OP_ENDBLOCK)