Project for the Operating Systems course at the University of Bologna (A.Y. 2021-2022).
PandOS+ is a didactic operating system for the MIPS architecture running on the µMPS3 emulator.
The project consists of three phases:
- Phase 1: implementation of some basic data structures.
- Phase 2: implementation of the kernel basic functionalities such as process scheduling, kernel mode system calls and interrupts handling.
- Phase 3: implementation of the virtual memory manager and user processes handling.
µMPS3 emulator is required to run the operating system. Refer to the official wiki for the installation.
To compile the source code, a GCC cross-compiler to MIPS is also required (Note: it should come along with µMPS3).
To compile the project run the following commands:
mkdir build
cd build
cmake -D CMAKE_TOOLCHAIN_FILE=../mips.cmake ..
make
mips.cmake contains the cross-compiler information.
Move into the build directory and compile the test programs by running:
cp -r ../phase3/test/{testers,umps3.json} .
make -C testers
Then load the umps3.json configuration into µMPS3. (Depending on the installation, some paths in umps3.json may need to be adjusted).
Since the test programs run concurrently and each of them outputs on different terminals, it is recommended to open all terminals (Windows > Terminal [0-7]) before starting the O.S.
The CMake file structure was written starting from the one of this project.