Demo/NEC_78K0R_IAR/ButtonISR.s26

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;
; This file defines a wrapper for the interrupt generated each time the button
; on the target board is pushed.  The asm wrapper is used to save and restore
; the task context as a context switch may occur within the ISR itself.
; The C portion of the ISR is defined within ButtonTask.c.
;

; Include the portSAVE_CONTEXT and portRESTORE_CONTEXT macros.
#include "ISR_Support.h"

	PUBLIC    vButtonISRWrapper
	EXTERN    vButtonISRHandler

    RSEG CODE:CODE
	
vButtonISRWrapper:
	; Save the current task context.	
	portSAVE_CONTEXT

	; Call the C portion of the ISR.
	call vButtonISRHandler

	; Restore the context of whichever task is to run next - which might be
	; different from the task that was originally interrupted.
	portRESTORE_CONTEXT
	reti



	; Place the ISR into the vector table.
	COMMON INTVEC:CODE:ROOT(1)
	ORG 8
`??vButtonISRWrapper??INTVEC 8`:
	DW vButtonISRWrapper


	END