irq_pio.s

ARM9 9200 CANBUS 程序

;------------------------------------------------------------------------------
;- Area Definition
;------------------------------------------------------------------------------
	AREA        itHandler, CODE, READONLY

		INCLUDE		AT91RM9200.inc
    	INCLUDE     irq_arm.mac

;------------------------------------------------------------------------------
;- Function             : pio_asm_irq_handler
;- Treatments           : PIO Controller Interrupt Handler.
;- Called Functions     : pio_c_irq_handler
;- Called Macros        : IRQ_ENTRY, IRQ_EXIT
;------------------------------------------------------------------------------
	EXPORT pio_asm_irq_handler
	IMPORT pio_c_irq_handler
pio_asm_irq_handler

;- Manage Exception Entry
        IRQ_ENTRY
;- Call the PIO Interrupt C handler
            ldr         r0, =pio_c_irq_handler
            mov         r14, pc
            bx          r0
;- Irq exit
exit_irq
;- Manage Exception Exit
        IRQ_EXIT

    END