Lpc2000

I think VIC_GCCFIX_IRQ_EPILOGUE should be:

#define VIC_GCCFIX_IRQ_EPILOGUE()       \
        __asm__ __volatile__(   "       ldmia   sp!, {r0-r12,pc}^       
\n");


The "^" tells the arm to copy SPSR to CPSR.

Richard.


Sten wrote:
> frankcallaghan9 wrote:
> >
> > Hi Guys,
> > I've just hit this problem in my UART handler, I'm new to the ARM
> > and haven't used it's asm yet! could one of you ASM gurus
> > please post the required inline entry/exit code for us dummys
> > thanks,
>
> Hello Frank,
>
> if you want to use "manually" written prologue/epilogue instead of a 
> stub try this:
>
> #define 
> VIC_GCCFIX_IRQ_PROLOGUE()                                               \
>         __asm__ __volatile__(   "       sub     lr, lr, 
> #4              \n"     \
>                                 "       stmdb   sp!, 
> {r0-r12,lr}        \n");
> #define VIC_GCCFIX_IRQ_EPILOGUE()       \
>         __asm__ __volatile__(   "       ldmia   sp!, 
> {r0-r12,pc}        \n");
>
> void myIRQ(void) __attribute__((interrupt("IRQ"), naked));
>
> void myIRQ(void) {
>       VIC_GCCFIX_IRQ_PROLOGUE();
>       /* ... */
>       VIC_GCCFIX_IRQ_EPILOGUE();
> }
>
>    Sten
>