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57 lines
867 B
57 lines
867 B
; fizzbuzz.asm
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; Prints numbers 1 to 100, however if the number is a multiple of 3 it will print Fizz,
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; and if the number is a multiple of 5 it will print Buzz. If the number is a multiple
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; of both, it will print FizzBuzz
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; Compile with "nasm -f elf64 fizzbuzz.asm && ld fizzbuzz.o -o fizzbuzz"
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%include 'macros.asm'
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.text:
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global _start
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_start:
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mov rcx,0 ; counter
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mov rsi,0 ; fizz check
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mov rdi,0 ; buzz check
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loop:
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inc rcx
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check_fizz:
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mov rdx,0
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mov rax,rcx
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mov rbx, 3
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div rbx
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mov rsi,rdx
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cmp rsi,0
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jne check_buzz
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printStr f
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check_buzz:
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mov rdx,0
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mov rax,rcx
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mov rbx, 5
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div rbx
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mov rdi,rdx
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cmp rdi,0
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jne check_int
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printStr b
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check_int:
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cmp rsi,0
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je cont
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cmp rdi,0
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je cont
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printInt rcx
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cont:
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printStr n
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cmp rcx,99
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jle loop
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exit 0
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.data:
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; initialize doubleword msg variable
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f db 'Fizz',0x0
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b db 'Buzz',0x0
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n db 0xA,0x0
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