michaelengel / ose2023

Code for the course operating systems engineering at Uni Bamberg (Summer 2023)

OSE2023

Code for the course operating systems engineering at Uni Bamberg (Summer 2023)

You need the following tools on a Unix-like system (Linux, macOS, Windows with WSL):

• RISC-V 64 bit cross compilation toolchain (gcc or clang)

  • probably available as package in your Linux package manager (also on WSL)
  • homebrew package for macOS

• The qemu emulator

  • again, probably available as package in your Linux package manager (also on WSL)
  • qemu for macOS

Compile using the provided shellscript build.sh

Run the program using qemu-system-riscv64 -nographic -machine virt -smp 1 -bios none -kernel ./hello

You can attach a debugger by running qemu as follows: qemu-system-riscv64 -nographic -machine virt -smp 1 -bios none -kernel ./hello -S -s

In another terminal, you can then start the debugger: riscv64-unknown-elf-gdb hello and then at the (gdb) prompt enter target remote localhost:1234 to connect the debugger to the qemu emulator.

Useful links:

• Daniel Mangum's RISC-V debugging tutorial