64 lines
812 B
ArmAsm
64 lines
812 B
ArmAsm
format elf64
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extrn io_WriteConsoleASCII
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section '.rodata'
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interrupt_string:
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db "Interrupt Testcode", 0x0A, 0x00
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section '.data' writable
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align 4
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idt:
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rb 50*16
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idtr:
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dw (50*16)-1
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dq idt
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section '.text' executable
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int_handler:
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push rax
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push rcx
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push rdx
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push r8
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push r9
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push r10
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push r11
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sub rsp, 32
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mov rcx, interrupt_string
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call io_WriteConsoleASCII
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add rsp, 32
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pop r11
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pop r10
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pop r9
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pop r8
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pop rdx
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pop rcx
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pop rax
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iretq
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public interrupt_Testcode
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interrupt_Testcode:
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lidt [idtr]
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mov rax, int_handler
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mov [idt+49*16], ax
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mov word [idt+49*16+2], 0x10
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mov word [idt+49*16+4], 0x8e00
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shr rax, 16
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mov [idt+49*16+6], ax
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shr rax, 16
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mov [idt+49*16+8], rax
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; load the CS segment reg with 0x10
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lea rax, [.realint]
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push qword 0x10
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push rax
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retfq
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.realint:
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int 49
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ret
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