| 26,6 → 26,8 |
|---|
| # THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| # |
| |
| #include <arch/boot/boot.h> |
| |
| .section K_TEXT_START |
| .global kernel_image_start |
| |
| 54,9 → 56,26 |
|---|
| orl $0x1,%eax |
| movl %eax,%cr0 # switch to protected mode |
| jmpl $8,$meeting_point |
| meeting_point: |
| |
| .code32 |
| .align 4 |
| multiboot_header: |
| .long MULTIBOOT_HEADER_MAGIC |
| .long MULTIBOOT_HEADER_FLAGS |
| .long -(MULTIBOOT_HEADER_MAGIC + MULTIBOOT_HEADER_FLAGS) # checksum |
| .long multiboot_header |
| .long unmapped_ktext_start |
| .long 0 |
| .long 0 |
| .long multiboot_image_start |
| |
| multiboot_image_start: |
| movl $0x7c00, %esp # initialize stack pointer |
| |
| lgdt gdtr |
| lidt idtr |
| |
| meeting_point: |
| movw $16,%ax |
| movw %ax,%es |
| movw %ax,%gs |