RTEMS Porting Guide
Does the RTEMS invoke the user's ISR with the vector number and a pointer to the saved interrupt frame (1) or just the vector number (0)?
#define CPU_ISR_PASSES_FRAME_POINTER 0
NOTE: It is desirable to include a pointer to the interrupt stack frame as an argument to the interrupt service routine. Eventually, it would be nice if all ports included this parameter.
RTEMS Porting Guide
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