//-----------------------------------------------------------------------------
// This is the code that gets called when the processor receives a NMI
//-----------------------------------------------------------------------------
void nmi_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tNMI Exception\r"
             "LR:%8X SP:%8X\r", link, __get_SP() );
    print_all();

    for(;; );
}

//-----------------------------------------------------------------------------
// This is the code that gets called when the processor receives a Fault
// interrupt.
//-----------------------------------------------------------------------------
void hard_fault_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tHard Fault\r"
             "LR:%8X SP:%8X St:%8X\r", link, __get_SP(), NVIC_HARDFAULT );
    print_all();

    for(;; );
}

//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
void bus_fault_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tBUS Fault\r"                
            "LR:%8X SP:%8X St:%2X ", link, __get_SP(), (ulong)NVIC_BUSFAULT );
    if( NVIC_BUSFAULT & BUSFAULT_STAT_ARV )
        xprintf( "Adr:%8X\r", NVIC_BUSFAULTADR );
    else
        println( "Adr:None" );

    print_all();

    for(;; );
}

//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
void usage_fault_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tUsage Fault\r"
             "LR:%8X SP:%8X St:%4X\r", link, __get_SP(),
                                        (ulong)NVIC_USAGEFAULT );
    print_all();

    for(;; );
}

//-----------------------------------------------------------------------------
//
//-----------------------------------------------------------------------------
void mpu_fault_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tMPU Fault\r"                
            "LR:%8X SP:%8X St:%2X ", link, __get_SP(), (ulong)NVIC_MEMFAULT );
    if( NVIC_MEMFAULT & MEMFAULT_STAT_ARV )
        xprintf( "Adr:%8X\r", NVIC_MEMFAULTADR );
    else
        println( "Adr:None" );

    print_all();                                                                      

    for(;; );
}


//-----------------------------------------------------------------------------
// This is the code that gets called when the processor receives an Unexpected
// Interrupt.
//-----------------------------------------------------------------------------
void default_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tDefault/Unknown Interrupt\r"
             "LR:%8X SP:%8X\r", link, __get_SP() );
    print_all();

    for(;; );
}

//-----------------------------------------------------------------------------
// This is the code that gets called when the processor receives an Unexpected
// Interrupt.
//-----------------------------------------------------------------------------
void debug_isr(void)
{
ulong link = __get_LR();

    xprintf( "\r\tDebug Fault\r"
             "LR:%8X SP:%8X St:%2X Data:%8X\r", link, __get_SP(),
                                             NVIC_DEBUGFAULT & 0xFF, NVIC_DBG_DATA );
    print_all();

    for(;; );
}

void make_hard_fault()
{
    __asm volatile
    (
        "MOVS r0, #1       \n"
        "LDM r0,{r1-r2}    \n"
        "BX LR                \n"
    );
}