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configs	nemu,build: build libnemu with nix	2024-08-15 18:36:23 +08:00
include	abstract-machine(nemu): support context switch	2024-07-25 17:16:41 +08:00
resource	chore: clang format	2024-07-22 17:45:49 +08:00
scripts	feat(nemu): gdb remote debug	2024-04-25 16:54:27 +08:00
src	nemu,chore: reformat c/c++ code	2024-08-13 18:49:08 +08:00
tests	nemu,build: build libnemu with nix	2024-08-15 18:36:23 +08:00
tools	nemu,chore: reformat c/c++ code	2024-08-13 18:49:08 +08:00
.gitignore	abstract-machine(nemu): support context switch	2024-07-25 17:16:41 +08:00
.result.tmp	refactor: drop internal difftest support	2024-07-23 17:15:35 +08:00
default.nix	nemu,build: build libnemu with nix	2024-08-15 18:36:23 +08:00
Kconfig	feat(nemu): gdb remote debug	2024-04-25 16:54:27 +08:00
LICENSE	pa1.2: use flex and bason to implement expr parser	2024-01-12 22:16:35 +08:00
Makefile	chore: clang format	2024-07-22 17:45:49 +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