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Architectures and Processors forum armv7a/armv8 : Undefined Abort Exception and MMU

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armv7a/armv8 : Undefined Abort Exception and MMU

Vincent Siles over 7 years ago

Hi !

When MMU is enabled, and a undefined abort exception is triggered, are we sure that the address stored in the `lr` / `elr_elx` registers is actually mapped by the MMU, or should I check that before trying to access the address ?

Best,

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a.surati over 7 years ago in reply to Vincent Siles +1 verified

I think that there are two places where the question about the mapping of such an instruction (the execution of which resulted in an undefined instruction exception) can be raised. (1) The place when...