boot.s

ARM嵌入式系统关于IRQ中断处理基于c语言的实验代码

	IMPORT	post_initGpio
	IMPORT	post_initMem
	IMPORT	post_initVariant
	IMPORT	post_initOsTimer
	IMPORT	process_CPSR	
         

	IMPORT	vectorIdentify
	IMPORT	dummyOs


	AREA boot ,CODE ,READONLY

	ENTRY

	b post
	nop
	nop
	nop

;0x10
	nop
	nop
	b vectorIdentify
	nop

;0x20
	nop
	nop
	nop
	nop

;0x30
	nop
	nop
	nop
	nop

;0x40
	nop
	nop
	nop
	nop

;0x50
	nop
	nop
	nop
	nop

;0x60
	nop
	nop
	nop
	nop

;0x70
	nop
	nop
	nop
	nop

;/////////
;this post routine body
;////////

post
	mov r14,pc
	ldr pc,=post_initGpio

	mov r14,pc
	ldr pc,=post_initMem

	mov r14,pc
	ldr pc,=post_initVariant

	mov r14,pc
	ldr pc,=post_initOsTimer

;//////////////////

	ldr r4,=process_CPSR
	msr spsr,r4

	ldr r4,=dummyOs
	movs pc,r4

	END