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idt_asm.nasm
147 lines (125 loc) · 1.65 KB
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idt_asm.nasm
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[bits 32]
section .text
global load_idt
load_idt:
mov eax, [esp + 4]
lidt [eax]
ret
;; num %1
%macro isr_noerr 1
global isr%1
isr%1:
cli
push 0
push %1
jmp isr_stub
%endmacro
%macro isr_err 1
global isr%1
isr%1:
cli
push %1
jmp isr_stub
%endmacro
isr_noerr 0
isr_noerr 1
isr_noerr 2
isr_noerr 3
isr_noerr 4
isr_noerr 5
isr_noerr 6
isr_noerr 7
isr_err 8
isr_noerr 9
isr_err 10
isr_err 11
isr_err 12
isr_err 13
isr_err 14
isr_noerr 15
isr_noerr 16
isr_noerr 17
isr_noerr 18
isr_noerr 19
isr_noerr 20
isr_noerr 21
isr_noerr 22
isr_noerr 23
isr_noerr 24
isr_noerr 25
isr_noerr 26
isr_noerr 27
isr_noerr 28
isr_noerr 29
isr_noerr 30
isr_noerr 31
extern isr_handler
isr_stub:
pusha
mov ax, ds
push eax
mov esi, eax
mov ax, 10h
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
call isr_handler
pop eax
mov eax, esi
mov ds, ax
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
popa
add esp, 8
sti
iret
;; num %1 map %2
%macro irq 2
global irq%1
irq%1:
cli
push 0
push %2
jmp irq_stub
%endmacro
irq 0, 32
irq 1, 33
irq 2, 34
irq 3, 35
irq 4, 36
irq 5, 37
irq 6, 38
irq 7, 39
irq 8, 40
irq 9, 41
irq 10, 42
irq 11, 43
irq 12, 44
irq 13, 45
irq 14, 46
irq 15, 47
extern irq_handler
irq_stub:
pusha
mov ax, ds
push eax
mov esi, eax
mov ax, 10h
mov ds, ax
mov es, ax
mov fs, ax
mov gs, ax
call irq_handler
pop ebx
mov ebx, esi
mov ds, bx
mov es, bx
mov fs, bx
mov gs, bx
popa
add esp, 8
sti
iret