This is a compiler for BMinor: a C-like educational language designed by Douglas Thain for his compiler course. My goal was to refresh C and learn a bit of X86_64 assembly. Writing was fun, but also a bit annoying: C is quite unforgiving. I still like it, but I'd use ML or even Python next time.
Some notes:
- Not refactored, lots of ugly hacks. Coded, tested, abandoned.
- No memory management. Leaking memory everywhere.
- No optimisations.
- I might have extended the language's expressivity here and there, but I don't remember details.
- The parser needs spaces around binary minus, so write 2 - 3, not 2-3.
- The compiler emits NASM assembly.
- Works surprisingly good!
Dependencies and building:
- Linux: C/build-essential/bison/flex/nasm.
- Run make to build.
How to use:
- An example BMinor source fibonnacci.bminor is included from the course's repository. Let's torture it.
- You can separately test the scanner and parser:
./bminor -scan fibonnacci.bminor
./bminor -parse fibonnacci.bminor- You can also produce .dot files with slightly annotated BMinor program's AST:
./bminor -dot fibonnacci.bminor > fibonacci.dot
dot -Tpdf fibonnacci.dot -o fibonnacci.pdf- To compile, assemble, link with a wrapper around some standard C functions, and run do:
./bminor -compile fibonnacci.bminor > fibonacci.asm
make compile src=fibonacci
./fibonacci.bin