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How is it even possible to write a kernel in Common Lisp? I thought kernels didn’t have enough to support the run time environment of languages that weren’t C,

How is it even possible to write a kernel in Common Lisp? I thought kernels didn’t have enough to support the run time environment of languages that weren’t C, C++, or Rust? Even Rust C++, and C require special compilation without parts of the Stdlib to running in the kernel.

cyberbanjo 5y ago
Common Lisp always struck me (not that I'm familiar) as a language lower than C, and higher than hell. Looks like high level assembler in places. https://github.com/froggey/Mezzano/blob/master/supervisor/x86-64/cpu.lisp https://github.com/froggey/Mezzano/blob/master/supervisor/x8...
- jonjacky 5y ago
  It is. The expressions that look like this: (sys.lap-x86:xor32 :eax :eax) are assembly language statements.
- lispm 5y ago
  LAP = Lisp Assembly Program
pjmlp 5y ago
Just like with Rust, C++, and C, you have a language subset for the kernel, and then enjoy the full language on userspace.