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详细叙述以下伪代码进行ARM异常处理的过程
R14_<Exception_Mode> = Return Link
SPSR_<Exception_Mode> = CPSR
CPSR[4:0] = Exception Mode Number
CPSR[5] = 0
If <Exception_Mode> == Reset or FIQ then
CPSR[6] = 1
CPSR[7] = 1
PC = Exception Vector Address
R14_<Exception_Mode> = Return Link
SPSR_<Exception_Mode> = CPSR
CPSR[4:0] = Exception Mode Number
CPSR[5] = 0
If <Exception_Mode> == Reset or FIQ then
CPSR[6] = 1
CPSR[7] = 1
PC = Exception Vector Address
...全文
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