S3C2440中断与异常定义与基本知识

1. S3C2440中断初始化：

#define BIT_ALLMSK  (0xffffffff)

  void Isr_Init(void)
{
 pISR_UNDEF=(unsigned)HaltUndef;
 pISR_SWI  =(unsigned)HaltSwi;
 pISR_PABORT=(unsigned)HaltPabort;
 pISR_DABORT=(unsigned)HaltDabort;
 rINTMOD=0x0;   // All=IRQ mode  Address:0x4A000004   =1 FIQ mode; =0 IRQ mode
 rINTMSK=BIT_ALLMSK;   // All interrupt is masked.  Address:0x4A000008   0 = Interrupt service is available.
                                          //1 = Interrupt service is masked.
}
void HaltUndef(void)
{
 Uart_Printf("Undefined instruction exception!!!\n");
 while(1);
}

void HaltSwi(void)
{
 Uart_Printf("SWI exception!!!\n");
 while(1);
}

void HaltPabort(void)
{
 Uart_Printf("Pabort exception!!!\n");
 while(1);
}

void HaltDabort(void)
{
 Uart_Printf("Dabort exception!!!\n");
 while(1);
}

2.  7个中断地址：

#define _ISR_STARTADDRESS  0x33ffff00

#define pISR_RESET  (*(unsigned *)(_ISR_STARTADDRESS+0x0))
#define pISR_UNDEF  (*(unsigned *)(_ISR_STARTADDRESS+0x4))
#define pISR_SWI  (*(unsigned *)(_ISR_STARTADDRESS+0x8))
#define pISR_PABORT  (*(unsigned *)(_ISR_STARTADDRESS+0xc))
#define pISR_DABORT  (*(unsigned *)(_ISR_STARTADDRESS+0x10))
#define pISR_RESERVED (*(unsigned *)(_ISR_STARTADDRESS+0x14))
#define pISR_IRQ  (*(unsigned *)(_ISR_STARTADDRESS+0x18))
#define pISR_FIQ  (*(unsigned *)(_ISR_STARTADDRESS+0x1c))

 (unsigned*)目的把(_ISR_STARTADDRESS+0x0)指针强转(unsigned*)类型，最前的一个*，取 该 (unsigned*)类型指针对应的unsigned值；
得恶补C语言的知识了