rPeANUt compiler

rPeANUt is a simulated microprocessor that the Australian National University uses to teach assembly programming. This is a broken project of mine to make a compiler targeting it.

If you just want to play with the simulation, you can find the JAR file in the top level of this repository.

This sorta compiles a language like C to rPeANUt assembly:

$ compile "def difference(x,y) { if (x > y) { return (x-y) ;} else { return (y-x); } }"

difference:
starting-block-5:
  load SP #0 R0;
  load SP #1 R1;
  sub R0 R1 R2;
  jumpn R2 else-1;
then-1:
  load SP #0 R0;
  load SP #1 R1;
  sub R0 R1 R2;
  store SP #0 R2;
  return;
  jump end-1;
else-1:
  load SP #1 R0;
  load SP #0 R1;
  sub R0 R1 R2;
  store SP #0 R2;
  return;
end-1:

It's not very fully featured, but it's coming along slowly!

Check out examples/simple.c for an example pseudo-C file, and examples/simple.s for what it translates to.

Incomplete list of things that don't work

• Ternary operator
• Global variables
• String literals

Things which should be in the standard library

• printString
• printInt
• printChar
• readChar
• readInt
• readLine
• drawDot

Notes

• I don't promise to calculate expressions in the order they were inputted.

Todos

• Global variables
• Arrays

Time taken

I'll keep updating the steps that examples/simple.c takes to run:

• 14th May: 2002