global _start section .data align 16 quad1: dq 0x70ad80ad7fffffff quad2: dq 0x71ae01ff0f00ffbe quad3: dq 0xf100808080f0ff42 mydword: dd 0xcafebabe myaddress: dq 0x00adbeefc0de00ce %include "header.inc" movq mm0, [quad1] movq mm1, [quad2] movq mm2, [quad3] movq mm3, [quad2] psubusw mm0, [quad2] psubusw mm0, [quad1] psubusw mm1, mm2 psubusw mm2, [quad1] psubusw mm3, [quad1] %include "footer.inc"