68 lines
932 B
PHP
68 lines
932 B
PHP
;; File: idt.inc
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idt_set_gate:
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mov [aInterruptGate + (ecx * 8)], ax
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mov [aInterruptGate + (ecx * 8) + 2], word 0x08
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mov [aInterruptGate + (ecx * 8) + 5], word 0x8E
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shr eax, 16
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mov [aInterruptGate + (ecx * 8) + 6], ax
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ret
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idt_setup:
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xor ecx, ecx
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@@:
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mov eax, [aISRTable + (ecx * 4)]
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call idt_set_gate
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inc ecx
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cmp ecx, 32
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jb @b
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mov eax, pit_irq
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call idt_set_gate
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inc ecx
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mov eax, kbd_irq
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call idt_set_gate
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inc ecx
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@@:
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mov eax, irq_dummy
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call idt_set_gate
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inc ecx
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cmp ecx, 0x30
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jb @b
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mov ecx, 35
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mov eax, com_irq2
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call idt_set_gate
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mov ecx, 36
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mov eax, com_irq1
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call idt_set_gate
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mov ecx, 38
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mov eax, floppy_irq
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call idt_set_gate
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mov ecx, 41
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mov eax, ne2k_irq
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call idt_set_gate
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mov ecx, 0x42
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mov eax, isr_syscall
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call idt_set_gate
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lidt [pIDT]
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sti
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ret
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pIDT:
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dw aInterruptGate.end-aInterruptGate-1
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dd aInterruptGate
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; variable: idt_entries
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aInterruptGate:
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dd 256*2 dup(0)
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.end:
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