diff options
Diffstat (limited to 'adirar111')
| -rw-r--r-- | adirar111/y86/fib.ys | 56 |
1 files changed, 0 insertions, 56 deletions
diff --git a/adirar111/y86/fib.ys b/adirar111/y86/fib.ys deleted file mode 100644 index 156c1ae..0000000 --- a/adirar111/y86/fib.ys +++ /dev/null @@ -1,56 +0,0 @@ -# y86 implementation of -# def fibonacci(n): -# if n <= 1: -# return n -# return fibonacci(n-1) + fibonacci(n-2) - -.pos 0 -main: -irmovq stack, %rsp # initialize stack pointer -irmovq $13, %rdi # %rdi = n -call fib # fib(n) -halt - - -fib: -irmovq $2, %rsi -irmovq $1, %rdx -rrmovq %rdi, %rcx -rrmovq %rdi, %r8 - -subq %rsi, %rcx # %rcx = n-2 -subq %rdx, %r8 # %r8 = n-1 -jle base # goto base if n <= 1 - -recursed: -# save to stack -pushq %r8 # %r8 = n-1 - -# recurse -rrmovq %rcx, %rdi # %rdi = n-2 -call fib # fib(n-2) - -# restore from stack -popq %r8 # %r8 = n-1 - -# save to stack -pushq %rax # %rax = fib(n-2) - -# recurse -rrmovq %r8, %rdi # %rdi = n-1 -call fib # fib(n-1) - -# restore from stack -popq %r10 # r10 = fib(n-2) - -addq %r10, %rax # %rax = fib(n-2) + fib(n-1) -jmp end - -base: -rrmovq %rdi, %rax # return n - -end: -ret - -.pos 0x1000 -stack: |