26 lines
335 B
NASM
26 lines
335 B
NASM
|
[bits 16]
|
||
|
|
|
||
|
|
switch_to_pm:
|
||
|
|
cli
|
||
|
|
|
||
|
|
lgdt [gdt_descriptor]
|
||
|
|
|
||
|
|
mov eax, cr0
|
||
|
|
or eax, 0x1
|
||
|
|
mov cr0, eax
|
||
|
|
|
||
|
|
jmp CODE_SEG:init_pm
|
||
|
|
|
||
|
|
[bits 32]
|
||
|
|
init_pm:
|
||
|
|
mov ax, DATA_SEG
|
||
|
|
mov ds, ax
|
||
|
|
mov ss, ax
|
||
|
|
mov es, ax
|
||
|
|
mov fs, ax
|
||
|
|
mov gs, ax
|
||
|
|
|
||
|
|
mov ebp, 0x90000
|
||
|
|
mov esp, ebp
|
||
|
|
|
||
|
|
call BEGIN_PM
|