40 lines
517 B
NASM
40 lines
517 B
NASM
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; string.asm
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global world
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global print_string
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section .rodata
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message: db ", world!", 10, 0
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section .text
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string_length:
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mov rax, 0
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.loop:
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xor rax, rax
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.count:
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cmp byte [rdi+rax], 0
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je .end
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inc rax
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jmp .count
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.end:
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ret
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world:
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mov rdi, message
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print_string:
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push rax
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push rdi
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call string_length
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mov rsi, [rsp]
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mov rdx, rax
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mov rax, 1
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mov rdi, 1
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push rcx
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syscall
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pop rcx
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pop rdi
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pop rax
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ret
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