| global _start |
| |
| section .data |
| align 16 |
| myquad: |
| dq 0xad0000ceffffadad |
| mydword: |
| dd 0xcafebac0 |
| shift1: |
| dq 0x07 |
| shift2: |
| dq -4 |
| |
| 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, [myquad] |
| movq mm1, [myquad] |
| movq mm2, [myquad] |
| movq mm6, [myquad] |
| |
| psrlw mm0, [shift1] |
| psrlw mm1, [mydword] |
| psrlw mm2, [shift2] |
| psrlw mm6, 0x5 |
| |
| loop: |
| hlt |
| jmp loop |