Linker Problem lpc2138

Hi,
if I programm the code with your ISP Files it works great.
If I program your code in the IDEA with the external makefile it works
great too.( I do not wrote it before, sorry)
But if I modify the code and Init timer2 and start a Interrupt service
routine, the programm does not work any longer. I mean the problem is by
activating the ISR.
Now I think the problem is anyway in the crt0.s file.
The programm stopped in the last 6 lines in this part of the code:
(undefined, data abort, programm abort)

// Runtime Interrupt Vectors
// -------------------------
Vectors:
        b     _start                    // reset - _start
        ldr   pc,_undf                  // undefined - _undf
        ldr   pc,_swi                   // SWI - _swi
        ldr   pc,_pabt                  // program abort - _pabt
        ldr   pc,_dabt                  // data abort - _dabt
        nop                             // reserved
        ldr   pc,[pc,#-0xFF0]           // IRQ - read the VIC
        ldr   pc,_fiq                   // FIQ - _fiq

#if 0
// Use this group for production
_undf:  .word _reset                    // undefined - _reset
_swi:   .word _reset                    // SWI - _reset
_pabt:  .word _reset                    // program abort - _reset
_dabt:  .word _reset                    // data abort - _reset
_irq:   .word _reset                    // IRQ - _reset
_fiq:   .word _reset                    // FIQ - _reset

#else
// Use this group for development
_undf:  .word __undf                    // undefined
_swi:   .word __swi                     // SWI
_pabt:  .word __pabt                    // program abort
_dabt:  .word __dabt                    // data abort
_irq:   .word __irq                     // IRQ
_fiq:   .word __fiq                     // FIQ

__undf: b     .                         // undefined
__swi:  b     .                         // SWI
__pabt: b     .                         // program abort
__dabt: b     .                         // data abort
__irq:  b     .                         // IRQ
__fiq:  b     .                         // FIQ
#endif
        .size _boot, . - _boot
        .endfunc

What could it be?
Thanks a lot and a nice weekend.
Sebastian

Hello Martin Thomas,
hier der Code für den Timer:

// Setup für Timer1 Initialisierung
void Setup_Timer1(void)
   {
     T1IR = 0x000000FF;      // Interrupt Register
     T1TCR = 0x00000011;     // Timer Control Register
     T1TCR = 0x00000001;
     T1CTCR = 0x00000000;    // Count Control Register
     T1PR = 0x0000000E;      //Timer1 prescale   0x00000800 origin
     T1MR0 = 0x03E8;         //Timer1 match Reg 0
     T1MCR = 0x00000003;     //Reset and interrupt match
     T1EMR &= 0x00000000;
   }


// Setup für Timer Interrupts
void Setup_Timer1_Int(void)
   {
     VICSoftIntClear  = 0x00000020;
     VICSoftIntClear  = 0x00000000;

     VICIntSelect &= ~VIC_BIT(VIC_TIMER1);       // IRQ to timer1
     VICIntEnable = VIC_BIT(VIC_TIMER1);         //Timer0 interrupt
enable
     VICVectCntl3 = VIC_ENABLE | VIC_TIMER1;     //Interrupt source
5(Timer1)
     VICVectAddr3 = (unsigned)Int_Irq_Timer1;    // Address of the ISR
   }


and here the ISR:

 // Timer Interrupt Funktion
 void Int_Irq_Timer1(void)
   {

    ISR_ENTRY();   // armVIC.c

     T1IR = 0xFF;
     T1IR = 0;
     toggle++;

     time_counter++;        // interrupt counter

     VICVectAddr = 0x00000000;   //reset VIC
     ISR_EXIT();   // armVIC.c       // recover registers and return

   }

this Code is from an example from winIDEA. there it works without a
problem.
I didn't touch your code in any way.

>> The programm stopped in the last 6 lines in this part of the code:
>> (undefined, data abort, programm abort)
>
> In which of the "endless loops"?

The loop is:
__dabt: b     .     // data abort

I hope you can help me now.

Hello,
I looked again and the programm stopped in several endless loops:

 In which of the "endless loops"?

 The loop is:
 __dabt: b     .     // data abort
 __undf: b     .      // undefined
__pabt: b     .      // program abort

MfG
Sebastian

Hello Martin Thomas,

thanks for your help, now it works.

what a little mistake.....

Sebastian

Thanks a lot!!!!

Martin Thomas wrote:
> add the "naked" function-attribute and give it a try:
>
> void Int_Irq_Timer1(void) __attribute__((naked));
> void Int_Irq_Timer1(void)
> {
>   ...