src/kernel/boot.asm


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section .start_section
    dd _start

; Initialize stack
section .bss
    align 16
    global STACK_BOTTOM
    global STACK_TOP

    STACK_BOTTOM:
        resb 0x4000
    STACK_TOP:

section .text
    global _start
    extern kernel_main
    _start:
        mov esp, STACK_TOP
        push ebx
        push eax
        cli
        call kernel_main
        cli

    hlt_L:
        hlt
        jmp hlt_L

    %include "src/kernel/gdt/gdt.asm"

    %include "src/kernel/interrupts/idt.asm"

    %include "src/kernel/interrupts/isr.asm"

    %include "src/kernel/interrupts/irq.asm"

    %include "src/kernel/interact.asm"

    global switch_to_user
    extern test_user
    switch_to_user:
        sti
        mov ax, 0x23
        mov ds, ax
        mov es, ax
        mov fs, ax
        mov gs, ax

        mov eax, esp
        push 0x23
        push eax
        pushf
        push 0x1B
        push test_user
        iret

section .end_section
    global ASM_KERNEL_END
    ASM_KERNEL_END:
        ; Kernel size detection