本帖最后由 zhaoyu2005 于 2009-10-26 09:26 编辑
不好意思，看错了，不是进入软中断了，是进入 Undefined 也就是 在死到在0x00000040了
代码如下：
AREA RESET,CODE,READONLY
ENTRY
;interrupt vectors
;中断向量表
Reset
LDR PC, ResetAddr
LDR PC, UndefinedAddr
LDR PC, SWI_Addr
LDR PC, PrefetchAddr
LDR PC, DataAbortAddr
DCD 0xb9205f80
LDR PC, [PC, #-0xff0]
LDR PC, FIQ_Addr
ResetAddr DCD ResetInit
UndefinedAddr DCD Undefined
SWI_Addr DCD SoftwareInterrupt
PrefetchAddr DCD PrefetchAbort
DataAbortAddr DCD DataAbort
Nouse DCD 0
IRQ_Addr DCD 0
FIQ_Addr DCD FIQ_Handler
;未定义指令
Undefined
B Undefined ;死在这里了，我将Undefined换成ResetInit后，执行正常
;软中断
SoftwareInterrupt
B SoftwareInterrupt
;取指令中止
PrefetchAbort
B PrefetchAbort
;取数据中止
DataAbort
B DataAbort
;快速中断
FIQ_Handler
STMFD SP!, {R0-R3,R12, LR}
BL FIQ_Exception
LDMFD SP!, {R0-R3, LR}
SUBS PC, LR, #4
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