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* Primitive ability to call kernel code from userspace.Josh Rahm2020-11-25
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* Add priv.h/c to allow switching to user mode. Change some things with the ↵Josh Rahm2020-11-25
| | | | MPU in main() to actually work.
* Add module for controlling the MPU.Josh Rahm2020-11-25
The MPU is a module in arm chips which allow for memory access protection. They are more primitive than full MMUs, but can still provide at least basic access control between different process controls.