int.s

来自「一位大侠写的ARM7DTMI模拟器,功能强大,可以模拟按键,彩色液晶,触摸屏,中」· S 代码 · 共 52 行

;;**************************************************************
;;BootLoader for simuCPU,you can only free use it for personal study purpose!
;;www.MShowTec.com for more information.
;;lmjx,Email:[e-mail],All Right Reserved.
;;**************************************************************

	IMPORT InterruptHandler_IRQ
	
	CODE32
	AREA	|C$$code|, CODE, READONLY
	GET snds.s
	
	EXPORT undef
undef
	b undef
	
	EXPORT swi	
swi
	b swi
	
	EXPORT prefetch
prefetch
	b prefetch
	
	EXPORT data
data
	b data

	EXPORT irq
irq

	sub	lr,lr,#4

    stmfd   sp!, {r0-r12, lr}	; Save all scratch registers
    
    mrs 	r4, spsr        
	stmfd 	sp!, {r4}   

	; Call the user interrupt handler
	bl	InterruptHandler_IRQ

	ldmfd 	sp!, {r4}                
	msr     spsr_cf, r4 
    
	ldmfd	sp!,{r0-r12, pc}^; Return from interrupt 
	
	
	EXPORT fiq	
fiq
	b fiq
	
	END