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- UID
- 1029342
- 性别
- 男
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3
STRCC r2, [r0], #4;cc:Carry clear;save R2 to R0
address, R0 =R0+ 4。
BCC %B0
ldr r1,=_IRQ_BASEADDRESS
ldr r0,=ExceptionHanlderBegin ;if there isn't
'subs pc,lr,#4' at 0x18, 0x1c
ldr r3,=ExceptionHanlderEnd
0
CMP r0, r3
;put the vector table at _IRQ_BASEADDRESS(0xc000000)
LDRCC r2, [r0],
#4
STRCC r2, [r1], #4
BCC %B0
ldr r1,=DIsrIRQ;put the IRQ judge program at
_IRQ_BASEADDRESS+0x80(0xc000080)
ldr r0,=IsrIRQ ;if there isn't 'subs
pc,lr,#4' at 0x18, 0x1c
ldr r3,=IsrIRQEnd
0
CMP r0, r3
LDRCC r2,
[r0], #4
STRCC r2, [r1], #4
BCC %B0
ldr r1, =MyHandleIRQ ;MyHandleIRQ point to DIsrIRQ
ldr r0,
=ExceptionHanlderBegin
ldr r4, =_IRQ_BASEADDRESS;
sub r0, r1, r0
add
r0, r0,r4
ldr r1, =DIsrIRQ
str r1, [r0]
定义Handlexxx：
^ (_IRQ_BASEADDRESS)
HandleReset # 4
HandleUndef # 4
HandleSWI # 4
HandlePabort # 4
HandleDabort # 4
HandleReserved # 4
HandleIRQ # 4
HandleFIQ # 4
^ (_IRQ_BASEADDRESS+0x80)
DIsrIRQ # 4
;IntVectorTable
^
(_IRQ_BASEADDRESS+0x100)
HandleADC # 4
HandleRTC # 4
HandleUTXD1 # 4
HandleUTXD0 # 4
HandleSIO # 4
HandleIIC # 4
HandleURXD1 # 4
HandleURXD0 # 4
HandleTIMER5 # 4
HandleTIMER4 # 4
HandleTIMER3 # 4
HandleTIMER2 # 4
HandleTIMER1 # 4
HandleTIMER0 # 4
HandleUERR01 # 4
HandleWDT # 4
HandleBDMA1 # 4
HandleBDMA0 # 4
HandleZDMA1 # 4
HandleZDMA0 # 4
HandleTICK # 4
HandleEINT4567 # 4
HandleEINT3 # 4
HandleEINT2 # 4
HandleEINT1 # 4
HandleEINT0 # 4 |
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