format elf64 extrn io_WriteConsoleASCII section '.rodata' interrupt_string: db "Interrupt Testcode", 0x0A, 0x00 section '.data' writable align 4 idt: rb 50*16 idtr: dw (50*16)-1 dq idt section '.text' executable int_handler: push rax push rcx push rdx push r8 push r9 push r10 push r11 sub rsp, 32 mov rcx, interrupt_string call io_WriteConsoleASCII add rsp, 32 pop r11 pop r10 pop r9 pop r8 pop rdx pop rcx pop rax iretq public interrupt_Testcode interrupt_Testcode: lidt [idtr] mov rax, int_handler mov [idt+49*16], ax mov word [idt+49*16+2], 0x08 mov word [idt+49*16+4], 0x8e00 shr rax, 16 mov [idt+49*16+6], ax shr rax, 16 mov [idt+49*16+8], rax int 49 ret