PrimeCell® Vectored Interrupt Controller (PL190) Technical Reference ManualRevision: r1p2
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B.1.13. Highest level vectored IRQ interrupt service routine

Example B.13 gives an example of the highest level vectored IRQ interrupt service routine code.

Example B.13. Highest level vectored IRQ interrupt service routine

0x18   LDR    pc, [pc, #-0xff0]               ;  Load vector into PC



highest_priority_vector_handler



       Interrupt_service_routine



       ;  Code to exit handler

       STR    r0, VectorAddr                  ;  Acknowledge Vectored IRQ has

                                              ;  finished

       SUBS   pc, r14, #4                     ;  Return from IRQ
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