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.set IRQ_BASE, 0x20
.section .text
.extern handle_int
.global int_ignore
.macro handle_exception num
.global handle_irq\num
handle_irq\num:
movb $\num, (int_number)
jmp int_bottom
.endm
.macro handle_irq num
.global handle_irq\num
handle_irq\num:
movb $\num + IRQ_BASE, (int_number)
jmp int_bottom
.endm
handle_irq 0x00
handle_irq 0x01
handle_exception 0x0D
int_bottom:
pop %eax
push int_bottom
pusha
pushl %ds
pushl %es
pushl %fs
pushl %gs
pushl %esp
pushl %eax
push (int_number)
call handle_int
movl %eax, %esp // Set the stack pointer to the return value of handle_int
popl %gs
popl %fs
popl %es
popl %ds
popa
iret
int_ignore:
pop %eax
iret
.data
int_number: .byte 0
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