global _start section .data align 16 myquad: dq 0x1234567890abcdef mydword: dd 0xcafebabe myaddress: dd 0xdeadbeef %include "header.inc" movq mm0, [myquad] movq [myaddress], mm0 movq mm1, [myaddress] movq mm4, mm0 %include "footer.inc"