The ATSAM3N4B is an ARM Cortex M3 microcontroller from Atmel. I wanted to ask if anyone can help clarify the IACCVIOL Hard Fault processing.
What I want is the infringing instruction address which the datasheet explains in 10.21.11.1 (pg 182) as:
Instruction access violation flag:
0 = no instruction access violation fault
1 = the processor attempted an instruction fetch from a location that does not permit execution.
When this bit is 1, the PC value stacked for the exception return points to the faulting instruction. The processor has not written a fault address to the MMAR.
What I want help with is the stacked for the exception return? I don't understand what this refers to.
Is anyone able to help?