global _start section .data align 16 quad1: dq 0x70ad80ad7fffffff quad2: dq 0x71ae01ff0f00ffbe quad3: dq 0xf100808080f0ff42 quad4: dq 0x8000800080008000 mydword: dd 0xcafebabe myaddress: dq 0x00adbeefc0de00ce %include "header.inc" movq mm0, [quad1] movq mm1, [quad2] movq mm2, [quad3] movq mm3, [quad2] movq mm4, [quad4] psubb mm0, [quad2] psubb mm0, [quad1] psubb mm1, mm2 psubb mm2, [quad1] psubb mm3, [quad1] psubb mm4, [quad4] %include "footer.inc"