c_handle.c

来自「ADS环境下软中断实现64位整数加法 运行于arm920T」· C语言 代码 · 共 18 行

void C_SWI_Handler( unsigned int swi_num, unsigned int *regs )
{
    unsigned long long * result = (unsigned long long *)malloc(8);
    unsigned long long resultValue;
    unsigned long long first = regs[1];
    unsigned long long second = regs[3];
    first = (first<<32) + regs[0];
    second = (second<<32)+ regs[2];
    switch( swi_num )
    {
    case    0:
    	resultValue = first+second;	
    	*result = resultValue;	
    	regs[0]=(unsigned int)result;
    break;
    }
}