iximeow@SnoopJ admittedly what i want to do is cross-compile gb(c) roms to native x86/aarch64 which is maybe more on brand. it's really good though, it forced me to rethink how i'd design decoder libraries and it's still only 30x realtime emulation. i'm hoping in a decode/interpret mode i can get closer to 50x but "make it work" then "make it fast" and all..
@SnoopJ and re. design, the important realization is that "decoder library" as a separate function, separate binary, anything like that, it's probably grossly bad for throughput! so yaxpeax-sm83 has this callback thing i have no idea how to generalize: https://github.com/iximeow/yaxpeax-sm83/blob/no-gods-no-/src/lib.rs#L636-L724
so this specializes with the cpu impl: https://github.com/iximeow/yaxgbc/blob/no-gods-no-/src/cpu.rs#L34 so that there aren't separate decode/execute functions :D what was like 20 instructions to decode, 30 to do ABI glue + call/ret, 20 instructions to emulate, that all turned into like 15 instructions to decode and emulate most ops
