Daniel Janus • 9/25/2021

Testing a compiler that can’t even print stuff out

The author details their experience adding a testing framework to 'Lithium,' their toy x86 assembler and Lisp compiler. The challenge was creating tests for a compiler that produces raw, non-relocatable x86 binaries with no OS or C library dependencies. The solution involved using a DOS interrupt to capture register values and redirecting the output to a file for verification.

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#lisp #x86 #Assembler