section .rodata

invalid_idt:
    dd 0, 0

section .text

extern flush_irqs

global common_spinup
bits 32
common_spinup:
    cli

    lidt [invalid_idt]

    call flush_irqs

    xor eax, eax
    lldt ax

    ; We don't need the return address
    add esp, 4

    ; Get function address
    pop edi

    ; We don't need the argument count
    add esp, 4

    mov eax, 0x00000011
    mov cr0, eax

    xor eax, eax
    mov cr4, eax
    mov cr3, eax

    ; Clear TSS busy bit and load TR with base 0, limit 0
    sub esp, 8
    sgdt [esp]
    mov eax, [esp + 2]
    add esp, 8
    mov byte [eax + 0x3d], 0x89
    mov ax, 0x38
    ltr ax

    call edi

section .note.GNU-stack noalloc noexec nowrite progbits