History

xinyangli 89847cfdb4 feat(npc): difftest execution abstraction layer		2024-04-10 20:12:41 +08:00
..
configs	ci: add npc difftest	2024-04-05 12:58:16 +08:00
include	feat: difftest framework	2024-04-05 00:16:58 +08:00
resource	NJU-ProjectN/nemu ics2023 initialized	2023-12-21 00:20:36 +08:00
scripts	ci: add npc difftest	2024-04-05 12:58:16 +08:00
src	feat(npc): difftest execution abstraction layer	2024-04-10 20:12:41 +08:00
tests	pa2.1: support RV32I instructions	2024-03-06 12:50:56 +08:00
tools	NJU-ProjectN/nemu ics2023 initialized	2023-12-21 00:20:36 +08:00
.gitignore	pa1.3: watchpoint support	2024-02-08 20:07:03 +08:00
default.nix	ci: add npc difftest	2024-04-05 12:58:16 +08:00
Kconfig	feat: difftest framework	2024-04-05 00:16:58 +08:00
LICENSE	pa1.2: use flex and bason to implement expr parser	2024-01-12 22:16:35 +08:00
Makefile	pa2.2: nemu small fixes	2024-03-25 17:02:12 +08:00
README.md	NJU-ProjectN/nemu ics2023 initialized	2023-12-21 00:20:36 +08:00

README.md

NEMU

NEMU(NJU Emulator) is a simple but complete full-system emulator designed for teaching purpose. Currently it supports x86, mips32, riscv32 and riscv64. To build programs run above NEMU, refer to the AM project.

The main features of NEMU include

a small monitor with a simple debugger
- single step
- register/memory examination
- expression evaluation without the support of symbols
- watch point
- differential testing with reference design (e.g. QEMU)
- snapshot
CPU core with support of most common used instructions
- x86
  - real mode is not supported
  - x87 floating point instructions are not supported
- mips32
  - CP1 floating point instructions are not supported
- riscv32
  - only RV32IM
- riscv64
  - only RV64IM
memory
paging
- TLB is optional (but necessary for mips32)
- protection is not supported
interrupt and exception
- protection is not supported
5 devices
- serial, timer, keyboard, VGA, audio
- most of them are simplified and unprogrammable
2 types of I/O
- port-mapped I/O and memory-mapped I/O