APP_EnableRestart 这个函数作用不明 请大佬们帮忙看下

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short*APP_EnableRestart()
{
        unsigned int ea;
        unsigned int j;
        short*pEnableRestartFlag;
        ea = *(unsigned int*)0x8001007C;
        ea += 0x0490*4;
        if ( ea < 0x8001007C ) return 0;
        if ( ea > 0x81000000 ) return 0;
        ea = *(unsigned int*)( ea );
        if ( ea < 0x8001007C ) return 0;
        if ( ea > 0x81000000 ) return 0;
        j = *(unsigned char*)( ea + 1 );
        j *= 4;
        ea = ( ea + j + 4 ) & 0xFFFFFFFC;
        if ( ea < 0x8001007C ) return 0;
        if ( ea > 0x81000000 ) return 0;
        pEnableRestartFlag = (short*)(*( unsigned int*)( ea ) + 8 );
        if ( ( (unsigned int)pEnableRestartFlag & 0xFF000000 ) != 0x88000000 ) return 0;
        if ( pEnableRestartFlag ) *pEnableRestartFlag = 1;
        return pEnableRestartFlag;
}