40 lines
581 B
NASM
40 lines
581 B
NASM
SYS_EXIT equ 1
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SYS_WRITE equ 4
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STDOUT equ 1
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strlen:
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push ebx
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mov ebx, eax
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nextchar:
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cmp byte[eax], 0
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jz finished
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inc eax
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jmp nextchar
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finished:
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sub eax, ebx
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pop ebx
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ret
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print:
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push ebx
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push ecx
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push edx
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mov ebx, eax
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call strlen
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mov edx, eax
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mov ecx, ebx
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mov ebx, STDOUT
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mov eax, SYS_WRITE
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int 0x80
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pop edx
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pop ecx
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pop ebx
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ret
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quit:
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mov ebx, 0
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mov eax, SYS_EXIT
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int 0x80
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