45 lines
909 B
Common Lisp
45 lines
909 B
Common Lisp
((code
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(label main
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(push 35)
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(call &fib)
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(int-to-string)
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(call &pln)
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(halt))
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(label fib
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(dup) ; dup num
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(push 2) ; Base case: n < 2
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(jump-lt-int &base-case)
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(dup)
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(push 2) ; First call: fib(n-2)
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(sub-int) ; n - 2
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(call &fib)
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(over) ; get n over the previous answer
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(push 1) ; Second call: fib(n-1)
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(sub-int) ; n-1 (using saved n)
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(call &fib) ; Result in $2
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; Combine results
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(add-int) ; fib(n-2) + fib(n-1)
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(return) ; Return result
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(label base-case
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(return))) ; Return n directly
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(label pln
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(dup)
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(string-length)
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(push &terminal-namespace)
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(syscall WRITE)
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(push &new-line)
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(dup)
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(string-length)
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(push &terminal-namespace)
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(syscall WRITE)
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(return)))
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(data
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(label terminal-namespace "/dev/term/0")
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(label new-line "\n")))
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