NASM Hello World for x86 and x86_64 Intel Mac OS X (get yourself an updated nasm with brew)
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| ; /usr/local/bin/nasm -f macho 32.asm && ld -macosx_version_min 10.7.0 -o 32 32.o && ./32 | |
| global start | |
| section .text | |
| start: | |
| push dword msg.len | |
| push dword msg | |
| push dword 1 | |
| mov eax, 4 | |
| sub esp, 4 | |
| int 0x80 | |
| add esp, 16 | |
| push dword 0 | |
| mov eax, 1 | |
| sub esp, 12 | |
| int 0x80 | |
| section .data | |
| msg: db "Hello, world!", 10 | |
| .len: equ $ - msg |
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| ; /usr/local/bin/nasm -f macho64 64.asm && ld -macosx_version_min 10.7.0 -lSystem -o 64 64.o && ./64 | |
| global start | |
| section .text | |
| start: | |
| mov rax, 0x2000004 ; write | |
| mov rdi, 1 ; stdout | |
| mov rsi, msg | |
| mov rdx, msg.len | |
| syscall | |
| mov rax, 0x2000001 ; exit | |
| mov rdi, 0 | |
| syscall | |
| section .data | |
| msg: db "Hello, world!", 10 | |
| .len: equ $ - msg |