LARVa - Bridging LoongArch to RISC-V

This project is a proof-of-concept RISC-V emulator aiming at near-native execution performance on LoongArch. Support may expand to other architectures in the future, if the techniques employed here prove useful and reasonably arch-independent.

The project is named after a popular but extremely difficult chart with the same name, in the rhythm game maimai. Binary translation is hard, running such logic in privileged mode is even harder; while I cannot play the maimai chart at all, I do hope to manage the difficulty here somehow!

License

GPL-3.0-or-later

Roadmap

• [x] RV64GC disassembly
• [ ] verification interpreter -- WIP
• [ ] emulation machinery
  • [x] guest MMU -- barebones
• [ ] linux-user emulation
  • [x] stack -- works okay
  • [ ] thread-local storage
  • [ ] syscalls -- WIP, only exit_group so far
• [ ] LoongArch assembly
• [ ] translation passes
• [ ] system level PoC
  • TODO