Demos and Tools

Here we have gathered links to demos and visualization tools that CS107E students have found useful. Check them out!

RISC-V

Ripes simulator, simulator/visualizer/assembly editor for RISC-V
- Run it in your brower: https://ripes.me/
- Or download original version as desktop application (Qt)
- Source code on github https://github.com/mortbopet/Ripes, pre-built binaries are available https://github.com/mortbopet/Ripes/releases
Rars simulator, adapted from MARS, popular for teaching MIPS
- Desktop application (java) https://github.com/TheThirdOne/rars
Cornell simulator
- Created for a course at Cornell, somewhat simplified. https://www.cs.cornell.edu/courses/cs3410/2019sp/riscv/interpreter/
Instruction encoder/decoder from Luplab UC Davis
- https://luplab.gitlab.io/rvcodecjs/#q=fffff06f&abi=true&isa=RV64I

Matt Godbolt's Compiler Explorer is an awesome tool for seeing how the compiler translates from C to assembly
- https://gcc.godbolt.org/ Configure the settings for the C language, compiler RISC-V(64-bits) gcc 12.20 and flags -Og -ffreestanding to approximate the toolchain we are using. Here is a preconfigured link https://gcc.godbolt.org/z/Eod3jo3bb.
Use Rextester to compile and execute C program in a virtual environment. https://rextester.com/l/c_online_compiler_gcc
- Very handy for quickly running a C snippet to see what it does.
C Tutor is a nifty tool where you can step through a C program and visualize its execution, including showing the contents of the stack and heap memory. http://pythontutor.com/c.html#mode=edit
- (also available for python, javascript, java). From Philip Guo UC San Diego
The famed cdecl.org http://cdecl.org/ is your go-to when you need to convert a cryptic C declaration to English.