Hello,

it would be really nice to get the CP15 VBAR support integrated. This allows unit test suites of single address space real-time systems to catch NULL pointer read/write access for example.

The ARM documentation says that this is a banked register that is only present in an implementation that includes the Security Extensions. Is this equivalent to having TrustZone?

In the ID_PFR1, Processor Feature Register 1, the bits [4:7] indicate if a particular CPU has this feature. Is it possible to use this register to determine the availability of the VBAR register in Qemu? This may avoid adding a new enum arm_features.

--
Sebastian Huber, embedded brains GmbH

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