| global _start |
| |
| section .data |
| align 16 |
| quad1: |
| dq 0x70ad80ad7fffffff |
| quad2: |
| dq 0x71ae01ff0f00ffbe |
| quad3: |
| dq 0xf100808080f0ff42 |
| quad4: |
| dq 0x8000800080008000 |
| mydword: |
| dd 0xcafebabe |
| myaddress: |
| dq 0x00adbeefc0de00ce |
| |
| MBALIGN equ 1<<0 ; align loaded modules on page boundaries |
| MEMINFO equ 1<<1 ; provide memory map |
| FLAGS equ 0 ; this is the Multiboot 'flag' field |
| MAGIC equ 0x1BADB002 ; 'magic number' lets bootloader find the header |
| CHECKSUM equ -(MAGIC + FLAGS) ; checksum of above, to prove we are multiboot |
| section .multiboot |
| align 4 |
| dd MAGIC |
| dd FLAGS |
| dd CHECKSUM |
| |
| section .text |
| |
| _start: |
| main: |
| 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] |
| |
| |
| loop: |
| hlt |
| jmp loop |