EL1 Interrupt handler in C for Cortex R52

Hello

I'm quite a beginner with development of drivers for R52.

I just want, for trials purpose, to write a C interrupt handler (EL1) for some peripheral.

I wrote a very simple "hello world" style and managed to trigger it when my peripheral sends an interruptions to the R52 virtual model.

But now, I would like to know how to clear my interrupt from my C handler, because I do not know which registers must be written and in which order. Could

you please tell me what I have to do to clear my SPI interrupt ?

Best Regards

Frederic