2015-05-20 10:12:20 +03:00
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.section .text
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.align 4
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.macro IRQ ident byte
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.global _irq\ident
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.type _irq\ident, @function
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_irq\ident:
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cli
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push $0x00
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push $\byte
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jmp irq_common
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.endm
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/* Interrupt Requests */
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IRQ 0, 32
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IRQ 1, 33
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IRQ 2, 34
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IRQ 3, 35
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IRQ 4, 36
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IRQ 5, 37
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IRQ 6, 38
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IRQ 7, 39
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IRQ 8, 40
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IRQ 9, 41
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IRQ 10, 42
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IRQ 11, 43
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IRQ 12, 44
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IRQ 13, 45
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IRQ 14, 46
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IRQ 15, 47
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.extern irq_handler
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.type irq_handler, @function
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irq_common:
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/* Save all registers */
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pusha
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/* Save segment registers */
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push %ds
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push %es
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push %fs
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push %gs
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mov $0x10, %ax
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mov %ax, %ds
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mov %ax, %es
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mov %ax, %fs
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mov %ax, %gs
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/* Call interrupt handler */
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2015-05-21 06:32:21 +03:00
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push %esp
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call irq_handler
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add $4, %esp
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2015-05-20 10:12:20 +03:00
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/* Restore segment registers */
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pop %gs
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pop %fs
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pop %es
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pop %ds
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/* Restore all registers */
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popa
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/* Cleanup error code and IRQ # */
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add $8, %esp
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/* pop CS, EIP, EFLAGS, SS and ESP */
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iret
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