Comment by pocksuppet
1 day ago
Sure can. Just change the encodings.
You thought RISC-V chips were compatible with each other beyond the basics? They're not. RISC-V is only a starting point for designing the ISA your chip will actually implement. Don't get me wrong - it's still beneficial that simple code works on many chips.
HP wrote a JIT to migrate old applications to their new hardware. So did Apple, twice. I don't know if IBM were the first but they've done it a few times as well for their mainframe hardware.
In HP's case, they tried running their JIT to translate from architecture B to architecture B and ended up with better performance than running it directly.
HP also used a binary translator to migrate from HP3000 to PA-RISC in the 80s.
HP or HP née Compaq née Digital Equipment Corporation?
HP proper. It was a PA-RISC they were targeting.
https://cseweb.ucsd.edu/classes/sp00/cse231/dynamopldi.pdf